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Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2026

OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number: 1-10879

Graphic

AMPHENOL CORPORATION

(Exact name of Registrant as specified in its charter)

Delaware

22-2785165

(State or other jurisdiction of incorporation or organization)

(I.R.S. Employer Identification No.)

358 Hall Avenue

Wallingford, Connecticut 06492

(Address of principal executive offices) (Zip Code)

203-265-8900

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Class A Common Stock, $0.001 par value

APH

New York Stock Exchange

3.125% Senior Notes due 2032

APH32

New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes   No 

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes   No 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer 

Accelerated Filer 

Non-accelerated Filer 

Smaller Reporting Company 

Emerging Growth Company 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes   No 

As of April 28, 2026, the total number of shares outstanding of the Registrant’s Class A Common Stock was 1,230,234,445.

Table of Contents

Amphenol Corporation

Index to Quarterly Report

on Form 10-Q

  ​ ​ ​

Page

Part I

Financial Information

Item 1.

Financial Statements (unaudited):

Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025

2

Condensed Consolidated Statements of Income for the Three Months Ended March 31, 2026 and 2025

3

Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2026 and 2025

4

Condensed Consolidated Statements of Cash Flow for the Three Months Ended March 31, 2026 and 2025

5

Notes to Condensed Consolidated Financial Statements

6

Item 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

27

Item 3.

Quantitative and Qualitative Disclosures About Market Risk

43

Item 4.

Controls and Procedures

44

Part II

Other Information

Item 1.

Legal Proceedings

45

Item 1A.

Risk Factors

45

Item 2.

Unregistered Sales of Equity Securities and Use of Proceeds

45

Item 3.

Defaults Upon Senior Securities

46

Item 4.

Mine Safety Disclosures

46

Item 5.

Other Information

46

Item 6.

Exhibits

47

Signature

50

1

Table of Contents

PART I — FINANCIAL INFORMATION

Item 1. Financial Statements

AMPHENOL CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(dollars in millions)

March 31, 

December 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

ASSETS

Current Assets:

Cash and cash equivalents

$

4,128.0

$

11,130.6

Short-term investments

 

455.1

 

303.6

Total cash, cash equivalents and short-term investments

 

4,583.1

 

11,434.2

Accounts receivable, less allowance for doubtful accounts of $94.9 and $99.3, respectively

 

5,872.9

 

4,717.1

Inventories

 

4,086.8

 

3,424.9

Prepaid expenses and other current assets

 

840.9

 

691.0

Total current assets

 

15,383.7

 

20,267.2

Property, plant and equipment, less accumulated depreciation of $3,261.4 and $3,096.0, respectively

2,688.6

2,305.6

Goodwill

17,542.9

10,575.4

Other intangible assets, net

 

5,401.1

 

2,241.4

Other long-term assets

1,117.5

847.3

Total Assets

$

42,133.8

$

36,236.9

LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY

Current Liabilities:

Accounts payable

$

3,181.5

$

2,661.9

Accrued salaries, wages and employee benefits

 

675.5

 

767.7

Accrued income taxes

 

656.9

 

482.9

Accrued dividends

307.4

306.7

Other accrued expenses

 

2,043.8

 

1,646.4

Current portion of long-term debt

 

2,109.6

 

937.2

Total current liabilities

 

8,974.7

 

6,802.8

Long-term debt, less current portion

 

16,639.3

 

14,564.8

Accrued pension and postretirement benefit obligations

 

153.6

 

138.2

Deferred income taxes

1,270.1

432.9

Other long-term liabilities

 

1,004.6

 

788.5

Total Liabilities

28,042.3

22,727.2

Redeemable noncontrolling interests

9.1

9.3

Equity:

Common stock

1.2

1.2

Additional paid-in capital

 

4,347.4

 

4,232.9

Retained earnings

 

10,432.1

 

9,854.3

Treasury stock, at cost

(310.0)

(195.8)

Accumulated other comprehensive loss

 

(493.9)

 

(479.5)

Total stockholders’ equity attributable to Amphenol Corporation

 

13,976.8

 

13,413.1

Noncontrolling interests

 

105.6

 

87.3

Total Equity

 

14,082.4

 

13,500.4

Total Liabilities, Redeemable Noncontrolling Interests and Equity

$

42,133.8

$

36,236.9

See accompanying notes to condensed consolidated financial statements.

2

Table of Contents

AMPHENOL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(dollars and shares in millions, except per share data)

Three Months Ended

March 31, 

  ​ ​

2026

  ​

2025

 

Net sales

$

7,620.1

$

4,811.0

Cost of sales

 

4,819.9

 

3,167.0

Gross profit

 

2,800.2

 

1,644.0

Acquisition-related expenses

 

116.9

 

44.0

Selling, general and administrative expenses

 

851.5

 

575.2

Operating income

 

1,831.8

 

1,024.8

Interest expense

 

(207.9)

 

(76.5)

Other income (expense), net

 

21.8

 

14.6

Income before income taxes

 

1,645.7

 

962.9

Provision for income taxes

 

(702.4)

 

(218.7)

Net income

943.3

744.2

Less: Net income attributable to noncontrolling interests

 

(10.3)

 

(6.4)

Net income attributable to Amphenol Corporation

$

933.0

$

737.8

Net income attributable to Amphenol Corporation per common share — Basic

$

0.76

$

0.61

Weighted average common shares outstanding — Basic

 

1,228.9

 

1,209.8

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.72

$

0.58

Weighted average common shares outstanding — Diluted

 

1,289.7

 

1,266.2

See accompanying notes to condensed consolidated financial statements.

3

Table of Contents

AMPHENOL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(dollars in millions)

Three Months Ended

March 31, 

  ​ ​

2026

  ​ ​

2025

 

Net income

$

943.3

$

744.2

Total other comprehensive (loss) income, net of tax:

Foreign currency translation adjustments

 

(16.0)

 

72.1

Reclassification of net unrealized loss on hedging activities to interest expense, net of tax of ($0.3)

1.1

Pension and postretirement benefit plan adjustment, net of tax of ($0.4) and ($0.3), respectively

 

1.4

 

0.8

Total other comprehensive (loss) income, net of tax

 

(13.5)

 

72.9

Total comprehensive income

 

929.8

 

817.1

Less: Comprehensive income attributable to noncontrolling interests

 

(11.2)

 

(7.1)

Comprehensive income attributable to Amphenol Corporation

$

918.6

$

810.0

See accompanying notes to condensed consolidated financial statements.

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AMPHENOL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW

(Unaudited)

(dollars in millions)

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

Cash from operating activities:

Net income

$

943.3

$

744.2

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

 

485.8

 

236.3

Stock-based compensation expense

 

34.2

 

26.6

Deferred income tax provision (benefit)

 

165.6

(13.9)

Net change in components of working capital

(499.8)

(271.3)

Net change in other long-term assets and liabilities

(7.6)

43.0

Net cash provided by operating activities

 

1,121.5

 

764.9

Cash from investing activities:

Capital expenditures

 

(291.6)

 

(188.6)

Proceeds from disposals of property, plant and equipment

 

1.3

 

4.1

Purchases of investments

 

(232.6)

 

(3.1)

Sales and maturities of investments

 

83.9

 

7.2

Acquisitions, net of cash acquired

 

(10,591.8)

 

(2,172.2)

Other, net

Net cash used in investing activities

 

(11,030.8)

 

(2,352.6)

Cash from financing activities:

Proceeds from issuance of senior notes and other long-term debt

 

3,645.1

 

Repayments of senior notes and other long-term debt

 

(350.7)

(400.5)

Borrowings (repayments) under commercial paper programs, net

639.8

Payment of costs related to debt financing

 

(3.4)

 

Purchase of treasury stock

 

(178.0)

 

(180.9)

Proceeds from exercise of stock options

95.9

53.2

Dividend payments

 

(306.7)

 

(199.5)

Other, net

(3.9)

(0.7)

Net cash provided by (used in) financing activities

 

2,898.3

 

(88.6)

Effect of exchange rate changes on cash and cash equivalents

 

8.4

 

16.5

Net decrease in cash and cash equivalents

 

(7,002.6)

 

(1,659.8)

Cash and cash equivalents balance, beginning of period

 

11,130.6

 

3,317.0

Cash and cash equivalents balance, end of period

$

4,128.0

$

1,657.2

Cash paid for:

Interest

$

120.1

$

51.7

Income taxes, net

 

347.7

 

167.9

See accompanying notes to condensed consolidated financial statements.

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AMPHENOL CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(amounts included in the following Notes to Condensed Consolidated Financial Statements

are presented in millions, except share and per share data, unless otherwise noted)

Note 1—Basis of Presentation and Principles of Consolidation

The Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025, and each of the related Condensed Consolidated Statements of Income, Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Statements of Cash Flow for the three months ended March 31, 2026 and 2025, include the accounts of Amphenol Corporation and its subsidiaries (“Amphenol,” the “Company,” “we,” “our” or “us”). All material intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements included herein are unaudited. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments considered necessary for a fair presentation of the results, in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The results of operations for the three months ended March 31, 2026 are not necessarily indicative of the results to be expected for the full year. These condensed consolidated financial statements and the related notes should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “2025 Annual Report”).

Note 2—New Accounting Pronouncements

In November 2024, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). The intent of ASU 2024-03 is to improve financial statement disclosures regarding information about certain costs and expenses. Specifically, ASU 2024-03 requires the disaggregation of significant expenses within the income statement expense line items, including, but not limited to, purchases of inventory, employee compensation, depreciation, intangible asset amortization, and selling expenses, among others, as well as a qualitative description of the remaining amounts not separately disaggregated quantitatively. ASU 2024-03 is effective for annual fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments under ASU 2024-03 should be applied on a prospective basis, although retrospective application is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its consolidated financial statements and disclosures.

In December 2025, the FASB issued ASU No. 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements (“ASU 2025-11”), which clarifies the applicability of the interim reporting guidance, the types of interim reporting, and the form and content of interim financial statements in accordance with U.S. GAAP. The amendment does not intend to change the fundamental nature of interim reporting or expand or reduce current interim disclosure requirements but rather provides clarity and improves navigability of the existing interim reporting requirements. ASU 2025-11 is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027. The amendments under ASU 2025-11 should be applied on a prospective basis, although retrospective application is permitted. The Company is currently evaluating the potential impact of ASU 2025-11 on its interim consolidated financial statements and disclosures.

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Table of Contents

Note 3—Inventories

Inventories consist of:

March 31, 

December 31, 

 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

Raw materials and supplies

 

$

1,666.7

 

$

1,413.0

Work in process

 

1,203.6

 

960.3

Finished goods

 

1,216.5

 

1,051.6

 

$

4,086.8

 

$

3,424.9

Note 4—Debt

The Company’s debt (net of any unamortized discount) consists of the following:

 

March 31, 2026

December 31, 2025

 

Carrying

Approximate

Carrying

Approximate

 

  ​ ​ ​

Amount

    

Fair Value

    

Amount

    

Fair Value

 

Revolving Credit Facility

$

 

$

 

$

 

$

U.S. Commercial Paper Program

 

 

 

 

 

 

Euro Commercial Paper Program

 

 

 

 

 

 

364-Day Delayed Draw Term Loan

1,534.1

1,534.1

Three-Year Delayed Draw Term Loan

1,534.1

 

 

1,534.1

 

 

 

4.750% Senior Notes due March 2026

 

 

 

 

349.9

 

350.8

0.750% Euro Senior Notes due May 2026

576.9

 

 

575.5

 

 

586.5

 

584.2

5.050% Senior Notes due April 2027

700.9

 

 

705.4

 

 

701.2

 

709.8

Floating Rate Senior Notes due November 2027

500.0

499.8

500.0

501.0

3.800% Senior Notes due November 2027

749.6

746.0

749.5

749.5

4.375% Senior Notes due June 2028

749.5

752.1

749.5

757.5

2.000% Euro Senior Notes due October 2028

576.1

 

 

559.4

 

 

585.8

 

578.2

3.900% Senior Notes due November 2028

749.3

744.2

749.2

747.7

5.050% Senior Notes due April 2029

449.7

 

 

459.4

 

 

449.7

 

463.0

4.350% Senior Notes due June 2029

499.9

 

 

501.2

 

 

499.8

 

502.4

2.800% Senior Notes due February 2030

899.7

 

 

848.0

 

 

899.7

 

853.9

4.125% Senior Notes due November 2030

999.0

986.0

999.0

993.8

3.625% Euro Senior Notes due March 2031

575.9

577.7

2.200% Senior Notes due September 2031

748.5

 

 

665.3

 

 

748.4

 

669.4

3.125% Euro Senior Notes due June 2032

687.6

671.7

699.1

697.2

4.400% Senior Notes due February 2033

1,248.6

1,221.0

1,248.5

1,236.4

5.250% Senior Notes due April 2034

599.5

 

 

613.1

 

 

599.5

 

623.0

5.000% Senior Notes due January 2035

746.8

749.2

746.7

762.9

4.625% Senior Notes due February 2036

1,598.4

1,547.4

1,598.3

1,569.1

5.375% Senior Notes due November 2054

492.5

 

 

477.9

 

 

492.5

 

485.8

5.300% Senior Notes due November 2055

1,647.3

1,549.7

1,647.3

1,575.4

Other debt

 

1.4

 

 

1.4

 

 

1.8

 

1.8

Less: unamortized deferred debt issuance costs

 

(116.4)

 

 

 

 

(99.9)

 

Total debt

 

18,748.9

 

 

18,519.6

 

 

15,502.0

 

15,412.8

Less: current portion

 

2,109.6

 

2,110.5

 

 

937.2

 

935.8

Total long-term debt

$

16,639.3

 

$

16,409.1

 

$

14,564.8

$

14,477.0

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Revolving Credit Facility

The Company has an amended and restated $3,000.0 unsecured revolving credit facility (the “Revolving Credit Facility”). The Revolving Credit Facility matures in March 2029 and gives the Company and certain of its subsidiaries the ability to borrow, in various currencies, at a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates, in the case of U.S. dollar borrowings, are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). The Company may utilize the Revolving Credit Facility for general corporate purposes. As of March 31, 2026 and December 31, 2025, there were no outstanding borrowings under the Revolving Credit Facility. The carrying value of any borrowings under the Revolving Credit Facility would approximate their fair value, primarily due to their market interest rates, and would be classified as Level 2 in the fair value hierarchy (Note 5). Any outstanding borrowings under the Revolving Credit Facility are classified as long-term debt in the accompanying Condensed Consolidated Balance Sheets. The Revolving Credit Facility requires payment of certain annual agency and commitment fees and requires that the Company satisfy certain financial covenants. On March 31, 2026, the Company was in compliance with the financial covenants under the Revolving Credit Facility.

Commercial Paper Programs

The Company has a commercial paper program (the “U.S. Commercial Paper Program”) pursuant to which the Company may issue short-term unsecured commercial paper notes (the “USCP Notes” or “U.S. Commercial Paper”) in one or more private placements in the United States. The maturities of the USCP Notes vary but may not exceed 397 days from the date of issue. The USCP Notes are sold under customary terms in the commercial paper market and may be issued at par or a discount therefrom, and bear varying interest rates on a fixed or floating basis. As of March 31, 2026, the maximum aggregate principal amount outstanding of USCP Notes at any time is $3,000.0. The Company utilizes borrowings under the U.S. Commercial Paper Program for general corporate purposes, which, in recent years, have included fully or partially funding acquisitions, as well as repaying certain outstanding senior notes. The Company borrowed under the U.S. Commercial Paper Program throughout much of the first quarter of 2026, the proceeds of which were used for general corporate purposes. Before the end of the first quarter of 2026, the Company repaid all of its USCP Notes outstanding using cash on hand. As of March 31, 2026 and December 31, 2025, there were no USCP Notes outstanding.

The Company and one of its wholly owned European subsidiaries (the “Euro Issuer”) also have a commercial paper program (the “Euro Commercial Paper Program” and, together with the U.S. Commercial Paper Program, the “Commercial Paper Programs”), pursuant to which the Euro Issuer may issue short-term unsecured commercial paper notes (the “ECP Notes” and, together with the USCP Notes, the “Commercial Paper”), which are guaranteed by the Company and are to be issued outside of the United States.  The maturities of the ECP Notes will vary but may not exceed 183 days from the date of issue.  The ECP Notes are sold under customary terms in the commercial paper market and may be issued at par or a discount therefrom or a premium thereto and bear varying interest rates on a fixed or floating basis. The ECP Notes may be issued in Euros, Sterling, U.S. dollars or other currencies. The maximum aggregate principal amount outstanding of ECP Notes at any time is $2,000.0. The Company utilizes borrowings under the Euro Commercial Paper Program for general corporate purposes, which may include, for example, fully or partially funding acquisitions. The Company did not borrow under the Euro Commercial Paper Program during the first quarter of 2026, and, as of March 31, 2026 and December 31, 2025, there were no ECP Notes outstanding.

Amounts available under the Commercial Paper Programs may be borrowed, repaid and re-borrowed from time to time. In conjunction with the Revolving Credit Facility, as of March 31, 2026, the authorization from our Board of Directors (the “Board”) limits the maximum aggregate principal amount outstanding of USCP Notes, ECP Notes, and any other commercial paper or similar programs, along with outstanding amounts under the Revolving Credit Facility, at any time to $3,000.0 in the aggregate. The Commercial Paper Programs are rated A-2 by Standard & Poor’s and P-2 by Moody’s and, based on the Board’s authorization described above, are currently backstopped by the Revolving Credit Facility, as amounts undrawn under the Revolving Credit Facility are available to repay Commercial Paper, if necessary. Net proceeds of the issuances of Commercial Paper are expected to be used for general corporate purposes. Any outstanding Commercial Paper is classified as long-term debt in the accompanying Condensed Consolidated Balance Sheets since the Company has the intent and ability to refinance the Commercial Paper on a long-term basis using the Company’s Revolving Credit Facility. The carrying value of Commercial Paper approximates its fair value, primarily due to its market interest rates, and is classified as Level 2 in the fair value hierarchy (Note 5). 

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Table of Contents

Delayed Draw Term Loans

On August 22, 2025, the Company entered into (i) a three-year, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions, and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “Three-Year Delayed Draw Term Loan”), which is scheduled to mature on the three-year anniversary of the funding date, and (ii) a 364-day, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “364-Day Delayed Draw Term Loan” and, together with the Three-Year Delayed Draw Term Loan, the “Delayed Draw Term Loans,” and individually, a “Delayed Draw Term Loan”), which is scheduled to mature on the date that is 364 days after the funding date. Each Delayed Draw Term Loan may only be drawn in a single drawing over the life of the applicable facility. Each Delayed Draw Term Loan may be repaid at any time without premium or penalty and, once repaid, cannot be reborrowed. Interest rates under each Delayed Draw Term Loan are based on a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. The carrying value of any borrowings under each Delayed Draw Term Loan approximates their fair value, primarily due to their market interest rates, and are classified as Level 2 in the fair value hierarchy (Note 5). On November 13, 2025, the aggregate commitment amount in respect of each of the Delayed Draw Term Loans was individually reduced to $1,534.1, and as of December 31, 2025, the Company had not yet drawn upon either Delayed Draw Term Loan. On January 9, 2026, the Company drew the full $1,534.1 available under each of the Delayed Draw Term Loans to fund a portion of the consideration for the acquisition of CommScope’s Connectivity and Cable Solutions Business (“CommScope”), which closed on January 9, 2026, as discussed further in Note 11 herein. In accordance with the credit agreements, the borrowings under the 364-Day Delayed Draw Term Loan and the Three-Year Delayed Draw Term Loan will mature on January 8, 2027 and January 9, 2029, respectively. Interest rates on each Delayed Draw Term Loan were based on a spread over the adjusted term SOFR based on the Company’s debt rating, and as of March 31, 2026, the effective interest rates were approximately 4.42% and 4.54% for the 364-Day Delayed Draw Term Loan and the Three-Year Delayed Draw Term Loan, respectively. The Delayed Draw Term Loans required payment of certain commitment fees prior to the funding thereunder and require that the Company satisfy certain financial covenants, which financial covenants are the same as those under the Revolving Credit Facility. On March 31, 2026, the Company was in compliance with the financial covenants under each Delayed Draw Term Loan.

U.S. Senior Notes

On March 30, 2026, the Company used cash on hand to repay the $350.0 aggregate principal amount of unsecured 4.750% Senior Notes due March 30, 2026 upon maturity.

On March 3, 2025, the Company used a combination of cash on hand and borrowings under the U.S. Commercial Paper Program to repay the $400.0 aggregate principal amount of unsecured 2.050% Senior Notes due March 1, 2025 upon maturity.

On June 12, 2025, the Company issued $750.0 aggregate principal amount of unsecured 4.375% Senior Notes due June 12, 2028 (the “2028 Senior Notes”). Interest on the 2028 Senior Notes is payable semiannually on June 12 and December 12 of each year, which commenced on December 12, 2025. The Company used net proceeds from the 2028 Senior Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

On November 10, 2025, the Company issued (i) $500.0 aggregate principal amount of unsecured Floating Rate Senior Notes due November 15, 2027 (the “Floating Rate Senior Notes”), (ii) $750.0 aggregate principal amount of unsecured 3.800% Senior Notes due November 15, 2027 (the “3.800% Senior Notes”), (iii) $750.0 aggregate principal amount of unsecured 3.900% Senior Notes due November 15, 2028 (the “3.900% Senior Notes”), (iv) $1,000.0 aggregate principal amount of unsecured 4.125% Senior Notes due November 15, 2030 (the “4.125% Senior Notes”), (v) $1,250.0 aggregate principal amount of unsecured 4.400% Senior Notes due February 15, 2033 (the “4.400% Senior Notes”), (vi) $1,600.0 aggregate principal amount of unsecured 4.625% Senior Notes due February 15, 2036 (the “4.625% Senior Notes”) and (vii) $1,650.0 aggregate principal amount of unsecured 5.300% Senior Notes due November 15, 2055 (the “5.300% Senior Notes” and, together with the Floating Rate Senior Notes, the 3.800% Senior Notes, the 3.900% Senior Notes, the 4.125% Senior Notes, the 4.400% Senior Notes and the 4.625% Senior Notes, the “November Senior Notes”).

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Table of Contents

The Floating Rate Senior Notes bear interest at a floating rate per annum, reset quarterly, equal to Compounded SOFR, plus 0.53%. Interest on the Floating Rate Senior Notes is payable quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, which commenced on February 15, 2026. Interest on the 3.800% Senior Notes, 3.900% Senior Notes, 4.125% Senior Notes and 5.300% Senior Notes is payable semiannually on May 15 and November 15 of each year, commencing on May 15, 2026. Interest on the 4.400% Senior Notes and 4.625% Senior Notes is payable semiannually on February 15 and August 15 of each year, which commenced on February 15, 2026.

On January 9, 2026, the Company used the net proceeds from the November Senior Notes, together with borrowings under the Delayed Draw Term Loans and cash on hand, to fund the cash consideration for the CommScope acquisition, along with fees and expenses related thereto, as discussed further in Note 11 herein.

All of the Company’s outstanding senior notes in the United States (the “U.S. Senior Notes”) are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes. Interest on each series of U.S. Senior Notes is payable semiannually, except for the Floating Rate Senior Notes for which interest is payable quarterly. The Company may, at its option, redeem some or all of any series of U.S. Senior Notes at any time, subject to certain terms and conditions, which include paying 100% of the principal amount, plus accrued and unpaid interest, if any, to, but not including, the date of redemption, and, with certain exceptions, a make-whole premium, except that the Company may not redeem the Floating Rate Senior Notes at its option prior to their maturity.

Euro Senior Notes

On March 30, 2026, the Euro Issuer issued €500.0 (approximately $586.7 at date of issuance) aggregate principal amount of unsecured 3.625% Senior Notes due March 30, 2031 (the “2031 Euro Notes”). The 2031 Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s other unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes and the 2032 Euro Notes (each as defined below). Interest on the 2031 Euro Notes is payable annually on March 30 of each year, commencing on March 30, 2027. The Company intends to use the proceeds to repay the 0.750% Euro Senior Notes due May 4, 2026 at maturity and for general corporate purposes.

On June 16, 2025, the Company issued €600.0 (approximately $685.9 at date of issuance) aggregate principal amount of unsecured 3.125% Senior Notes due June 16, 2032 (the “2032 Euro Notes”). The 2032 Euro Notes are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes (defined below) and the 2031 Euro Notes. Interest on the 2032 Euro Notes is payable annually on June 16 of each year, commencing on June 16, 2026. The Company used net proceeds from the 2032 Euro Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

The Euro Issuer has two additional outstanding unsecured senior notes issued in Europe (the “Existing Euro Notes” together with the 2031 Euro Notes and the 2032 Euro Notes, the “Euro Notes” and, the Euro Notes together with the U.S. Senior Notes, the “Senior Notes”), each of which was issued with an aggregate principal amount of €500.0. The 0.750% Euro Senior Notes, which were issued in May 2020, mature on May 4, 2026, while the 2.000% Euro Senior Notes, which were issued in October 2018, mature on October 8, 2028. The Existing Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s senior unsecured and unsubordinated indebtedness and are fully and unconditionally guaranteed on a senior unsecured basis by the Company. Interest on each series of Existing Euro Notes is payable annually. The Company may, at its option, redeem some or all of either series of Existing Euro Notes at any time, subject to certain terms and conditions, which include paying 100% of the principal amount, plus accrued and unpaid interest, if any, to, but not including, the date of redemption, and, with certain exceptions, a make-whole premium.

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Table of Contents

The fair value of each series of Senior Notes is based on recent bid prices in an active market and is therefore classified as Level 1 in the fair value hierarchy (Note 5). The Senior Notes impose certain obligations on the Company and prohibit various actions by the Company unless it satisfies certain financial requirements.

Note 5—Fair Value Measurements

Fair value is determined based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. These requirements establish market or observable inputs as the preferred source of values. Assumptions based on hypothetical transactions are used in the absence of market inputs. The Company does not have any non-financial instruments accounted for at fair value on a recurring basis.

The valuation techniques required are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs create the following fair value hierarchy:

Level 1           Quoted prices for identical instruments in active markets.

Level 2           Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

Level 3           Significant inputs to the valuation model are unobservable.

The Company believes that the assets and liabilities currently subject to such standards with fair value disclosure requirements are primarily (i) debt instruments, (ii) pension plan assets, and (iii) assets acquired and liabilities and noncontrolling interests assumed as part of acquisition accounting, which are discussed in Note 4, Note 10 and Note 11, respectively, herein, in addition to the Notes to Consolidated Financial Statements in the 2025 Annual Report, along with short- and long-term investments and derivative instruments, discussed below. Substantially all of the Company’s short- and long-term investments consist of certificates of deposit, which are considered as Level 2 in the fair value hierarchy. Long-term investments are recorded in Other long-term assets in the accompanying Condensed Consolidated Balance Sheets. The carrying amounts of these short- and long-term instruments, the vast majority of which are in non-U.S. bank accounts, approximate their respective fair values. The Company’s derivative instruments primarily consist of foreign exchange forward contracts, which are valued using bank quotations based on market observable inputs, such as forward and spot rates, and are therefore classified as Level 2 in the fair value hierarchy. The impact of the credit risk related to these derivative financial assets is immaterial.

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Table of Contents

The Company reviews the fair value hierarchy classifications on a quarterly basis and determines the appropriate classification of such assets and liabilities subject to the fair value hierarchy standards based on, among other things, the ability to observe valuation inputs. The fair values of the Company’s financial and non-financial assets and liabilities subject to such standards as of March 31, 2026 and December 31, 2025 are as follows:

Fair Value Measurements

Quoted Prices in

Significant

Significant

Active Markets

Observable

Unobservable

for Identical

Inputs

Inputs

Total

Assets (Level 1)

(Level 2)

(Level 3)

March 31, 2026:

Short-term investments

$

455.1

$

$

455.1

$

Long-term investments

0.4

0.4

Forward contracts

(12.5)

(12.5)

Redeemable noncontrolling interests

(9.1)

(9.1)

Total

$

433.9

$

$

443.0

$

(9.1)

December 31, 2025:

Short-term investments

$

303.6

$

$

303.6

$

Long-term investments

0.2

0.2

Forward contracts

0.3

0.3

Redeemable noncontrolling interests

(9.3)

(9.3)

Total

$

294.8

$

$

304.1

$

(9.3)

The Company utilizes foreign exchange forward contracts, some of which are designated as hedging instruments accounted for as cash flow hedges, in the management of foreign currency exposures. In addition, the Company also enters into foreign exchange forward contracts, which are accounted for as net investment hedges, to hedge our exposure to variability in the U.S. dollar equivalent of the net investments in certain foreign subsidiaries. As of March 31, 2026, the fair value of such foreign exchange forward contracts in the table above consisted of (i) various outstanding foreign exchange forward contracts accounted for as net investment hedges and (ii) various outstanding foreign exchange forward contracts that are not designated as hedging instruments. As of December 31, 2025, the Company had no outstanding foreign exchange forward contracts accounted for as either net investment hedges or cash flow hedges. However, in June 2025, the Company issued the 2032 Euro Notes as discussed in Note 4, which have been designated as a hedge of the Company’s net investment in certain foreign subsidiaries. The effect of translating the 2032 Euro Notes into U.S. Dollars is recorded in Accumulated other comprehensive income (loss) and remains there until the underlying net investment is sold or substantially liquidated. We assessed the effectiveness of the net investment hedges at the inception of the hedging relationship and will assess quarterly thereafter. As of March 31, 2026, the net investment hedges were assessed and deemed to be effective.

During the three months ended March 31, 2026 and 2025, the amounts recognized in Accumulated other comprehensive income (loss) associated with foreign exchange forward contracts, as well as the amounts reclassified from Accumulated other comprehensive income (loss) to foreign exchange gain (loss), included in Cost of sales in the accompanying Condensed Consolidated Statements of Income, were not material.

In August 2025, the Company entered into $1,500.0 10-year and $1,000.0 30-year notional treasury lock derivative instruments to hedge interest rate risk prior to the issuance of the November Senior Notes, as discussed in Note 4 herein. Both treasury locks were designated as cash flow hedges. The treasury locks were settled in the fourth quarter of 2025 upon the issuance of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively, for a cumulative loss of $88.0 ($67.4 after-tax). The cumulative after-tax loss was recorded in Accumulated other comprehensive income (loss) and is being amortized to Interest expense over the terms of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively.

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The fair values of the Company’s forward contracts are recorded within Prepaid expenses and other current assets, Other long-term assets, Other accrued expenses and Other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets, depending on their value and remaining contractual period.

Certain acquisitions may result in noncontrolling interest holders who, in certain cases, are entitled to a put option, giving them the ability to put some or all of their redeemable interest in the shares of the acquiree to the Company. Specifically, if exercised by the noncontrolling interest holder, Amphenol would be required to purchase some or all of the option holder’s redeemable interest, at a redemption price during specified time period(s) stipulated in the respective acquisition agreement. The redeemable noncontrolling interests recorded on the accompanying Condensed Consolidated Balance Sheets relate to recent acquisitions, which, based on the terms of the respective acquisition agreements, will remain in temporary equity until the applicable put option is either fully exercised or expires. When noncontrolling option holders exercise their put options, the Company is required to acquire their entire redeemable noncontrolling interests, or portions thereof, then outstanding. The redemption value of the redeemable noncontrolling interests is generally calculated using Level 3 unobservable inputs based on a multiple of earnings, which, for the redeemable noncontrolling interests currently outstanding, approximate fair value. As such, the redemption value is classified as Level 3 in the fair value hierarchy and is recorded as Redeemable noncontrolling interests on the Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025. Refer to Note 7 herein for a rollforward of the Redeemable noncontrolling interests for the three months ended March 31, 2026 and 2025.

With the exception of the fair value of the assets acquired and liabilities assumed in connection with acquisition accounting, the Company does not have any other significant financial or non-financial assets and liabilities that are measured at fair value on a non-recurring basis.

Note 6—Income Taxes

Three Months Ended

March 31, 

2026

2025

Provision for income taxes

$

(702.4)

$

(218.7)

Effective tax rate

 

42.7

%  

 

22.7

%

For the three months ended March 31, 2026 and 2025, stock option exercise activity had the impact of decreasing our Provision for income taxes by $50.9 and $20.1, respectively, and decreasing our effective tax rate by approximately 310 basis points and 210 basis points, respectively, due to the recognition of excess tax benefits within Provision for income taxes in the accompanying Condensed Consolidated Statements of Income. Acquisition-related expenses, as discussed in further detail in Note 11 herein, had the aggregate impact of increasing our effective tax rate by approximately 120 basis points and 30 basis points for the three months ended March 31, 2026 and 2025, respectively. In addition, for the three months ended March 31, 2026, the Company recorded an accrual of $130.0 resulting from unfavorable determinations received from relevant tax authorities in China regarding the previously disclosed tax inquiries into certain of the Company’s prior period tax positions, as well as $160.0 in additional tax obligations related to China resulting from the Company’s reassessment of certain tax rate assumptions applied to prior years’ results not subject to the tax inquiries as further discussed below. These accruals had the effect of increasing our effective tax rate by approximately 1,760 basis points.

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The Company operates in the U.S. and numerous foreign taxable jurisdictions, and at any point in time has numerous audits underway at various stages of completion. With few exceptions, the Company is subject to income tax examinations by tax authorities for the years 2017 and after. The Company is generally not able to precisely estimate the ultimate settlement amounts or timing until the close of an audit. The Company evaluates its tax positions and establishes liabilities for uncertain tax positions that may be challenged by tax authorities and may not be fully sustained, despite the Company’s belief that the underlying tax positions are fully supportable. As of March 31, 2026, the amount of unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate, was approximately $571.5. Unrecognized tax benefits are reviewed on an ongoing basis and are adjusted for changing facts and circumstances, including the progress of tax audits and the closing of statutes of limitations. Based on information currently available, management anticipates that over the next 12-month period, audit activity could be completed and statutes of limitations may close relating to existing unrecognized tax benefits of approximately $239.5.

In connection with the previously disclosed tax matter in China, the Company received unfavorable determinations from the relevant tax authorities regarding certain of the Company’s prior period tax positions. As a result of these unfavorable determinations, the Company received tax payment notices totaling $230.0. To fully accrue for this amount, the Company recorded an accrual of $130.0 during the three months ended March 31, 2026, which was in addition to the accrual of $100.0 recorded in the three months ended December 31, 2025. In addition, the recent developments of the China tax matter also resulted in the Company reassessing certain tax rate assumptions applied to prior years’ results not subject to the China tax inquiries. This reassessment resulted in the Company recording $160.0 of additional tax obligations in the three months ended March 31, 2026.

Inflation Reduction Act of 2022

On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”), a tax and spending package that introduced several tax-related provisions, including a 15% corporate alternative minimum tax (“CAMT”) on certain large corporations and a 1% excise tax on certain corporate stock repurchases, was enacted into law. Companies were required to reassess their valuation allowances for certain affected deferred tax assets in the period of enactment but did not need to remeasure deferred tax balances for the related tax accounting implications of the CAMT. The IRA provisions, which became effective for Amphenol beginning on January 1, 2023, did not have a material impact on the Company during the three months ended March 31, 2026 and 2025. While the full impact of these provisions in the future depends on several factors, including interpretive regulatory guidance, which has not yet been released, the Company does not currently believe that the provisions of the IRA, including several other non-tax related provisions, will have a material impact on its financial condition, results of operations, liquidity and cash flows.

H.R. 1

On July 4, 2025, the United States federal government enacted the tax and spending bill H.R. 1. This legislation contains changes to previously enacted provisions of the Internal Revenue Code and provides for extensions of certain expiring tax provisions included in the Tax Cuts and Jobs Act. Certain corporate tax provisions in H.R. 1 were enacted with retroactive effect to January 1, 2025. H.R. 1 did not have a material impact on our effective tax rate for the three months ended March 31, 2026. The Company continues to evaluate the corporate tax provisions contained within H.R. 1, and the future impact of H.R. 1 depends on several factors, including interpretive regulatory guidance, which has not yet been released.

Note 7—Stockholders’ Equity and Noncontrolling Interests

Net income attributable to noncontrolling interests is classified below net income. Earnings per share is determined after the impact of the noncontrolling interests’ share in net income of the Company. In addition, the equity attributable to noncontrolling interests is presented as a separate caption within equity.

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A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2026 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

 

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2025

  ​

1,228.9

 

$

1.2

 

(2.4)

 

$

(195.8)

 

$

4,232.9

 

$

9,854.3

 

$

(479.5)

 

$

87.3

 

$

13,500.4

 

$

9.3

Net income

  ​

 

933.0

 

10.3

 

943.3

Other comprehensive income (loss)

  ​

 

(14.4)

 

1.1

 

(13.3)

(0.2)

Acquisitions resulting in noncontrolling interests

  ​

 

6.9

 

6.9

Purchase of treasury stock

  ​

(1.3)

 

(178.0)

 

(178.0)

Retirement of treasury stock

  ​

 

 

 

Stock options exercised

  ​

3.3

0.8

63.8

 

80.3

(47.8)

 

96.3

Dividends declared ($0.25 per common share)

  ​

 

(307.4)

 

(307.4)

Stock-based compensation expense

  ​

 

34.2

 

34.2

Balance as of March 31, 2026

  ​

1,232.2

 

$

1.2

 

(2.9)

 

$

(310.0)

 

$

4,347.4

 

$

10,432.1

 

$

(493.9)

 

$

105.6

 

$

14,082.4

 

$

9.1

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2025 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2024

  ​

1,212.9

 

$

1.2

 

(3.6)

 

$

(199.7)

 

$

3,601.8

 

$

7,105.0

 

$

(716.3)

 

$

55.4

 

$

9,847.4

 

$

8.7

Net income

  ​

 

737.8

 

6.1

 

743.9

0.3

Other comprehensive income (loss)

  ​

 

72.2

0.4

 

72.6

0.3

Purchase of treasury stock

  ​

(2.7)

 

(180.9)

 

(180.9)

Retirement of treasury stock

  ​

(2.7)

2.7

 

180.9

 

(180.9)

 

Stock options exercised

  ​

2.2

0.5

25.7

 

43.8

(16.4)

 

53.1

Dividends declared ($0.165 per common share)

  ​

 

(199.6)

 

(199.6)

Stock-based compensation expense

  ​

 

 

26.6

 

 

 

 

 

26.6

Balance as of March 31, 2025

  ​

1,212.4

 

$

1.2

 

(3.1)

 

$

(174.0)

 

$

3,672.2

 

$

7,445.9

 

$

(644.1)

 

$

61.9

 

$

10,363.1

$

9.3

Stock Repurchase Programs

On April 23, 2024, the Board authorized a stock repurchase program under which the Company may purchase up to $2,000.0 of its Common Stock during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the three months ended March 31, 2026, the Company repurchased 1.3 million shares of its Common Stock for $178.0 under the 2024 Stock Repurchase Program. All of the repurchased shares under the 2024 Stock Repurchase Program during the three months ended March 31, 2026 were retained in Treasury stock at the time of repurchase. From April 1, 2026 to April 28, 2026, the Company repurchased 0.3 million additional shares of its Common Stock for $44.2, and, as of April 29, 2026, the Company has remaining authorization to purchase up to $648.8 of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

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Table of Contents

Dividends

Contingent upon declaration by the Board, the Company pays a quarterly dividend on shares of its Common Stock. On October 21, 2025, the Board approved an increase to the Company’s quarterly dividend rate from $0.165 per share to $0.25 per share, effective with dividends declared in the fourth quarter of 2025, contingent upon declaration by the Board. The following table summarizes the dividends declared and paid during the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

  ​ ​ ​

2026

2025

Dividends declared

$

307.4

$

199.6

Dividends paid (including those declared in the prior year)

 

306.7

 

199.5

Note 8—Stock-Based Compensation

For the three months ended March 31, 2026 and 2025, the Company’s Income before income taxes was reduced by stock-based compensation expense of $34.2 and $26.6, respectively. In addition, for the three months ended March 31, 2026 and 2025, the Company recognized aggregate income tax benefits (associated with stock-based compensation) of $54.7 and $23.0, respectively, in Provision for income taxes in the accompanying Condensed Consolidated Statements of Income. These aggregate income tax benefits during the three months ended March 31, 2026 and 2025 include excess tax benefits of $50.9 and $20.1, respectively, from option exercises.

The impact associated with recognizing excess tax benefits from option exercises in the provision for income taxes on our consolidated financial statements could result in significant fluctuations in our effective tax rate in the future, since the provision for income taxes will be impacted by the timing and intrinsic value of future stock-based compensation award exercises.

Stock-based compensation expense includes the estimated effects of forfeitures, which are adjusted over the requisite service period to the extent actual forfeitures differ or are expected to differ from such estimates. Changes in estimated forfeitures are recognized in the period of change and impact the amount of expense to be recognized in future periods. The expense incurred for stock-based compensation plans is included in Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Income.

Stock Options

In May 2017, the Company adopted the 2017 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (the “2017 Employee Option Plan”), which provided for the issuance of 120,000,000 shares.  In March 2021, the Board authorized and approved the Amended and Restated 2017 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (the “Amended 2017 Employee Option Plan” and, together with the 2017 Employee Option Plan, the “2017 Option Plan”), which among other things, increased the number of shares reserved for issuance under the plan by 80,000,000 shares. The Amended 2017 Employee Option Plan was approved by the Company’s stockholders and became effective on May 19, 2021. As of March 31, 2026, there were 47,400,531 shares of Common Stock available for the granting of additional stock options under the 2017 Option Plan. Prior to the approval of the 2017 Employee Option Plan, the Company issued stock options under the 2009 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries, and its amendment (the “2009 Employee Option Plan”). No additional stock options will be granted under the 2009 Employee Option Plan.  Options granted under the 2017 Option Plan and the 2009 Employee Option Plan generally vest ratably over a period of five years from the date of grant and are generally exercisable over a period of 10 years from the date of grant.

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Stock option activity for the three months ended March 31, 2026 was as follows:

  ​

Weighted

 

  ​

Average

Aggregate

 

  ​

Weighted

Remaining

Intrinsic

 

  ​

Average

Contractual

Value

  ​

Options

  ​ ​

Exercise Price

  ​ ​

Term (in years)

  ​ ​

(in millions)

 

Options outstanding at January 1, 2026

  ​

88,821,121

$

36.62

 

5.43

$

8,753.6

Options granted

  ​

41,924

 

138.11

Options exercised

  ​

(4,082,462)

 

23.52

Options forfeited

  ​

(67,835)

 

53.92

Options outstanding at March 31, 2026

  ​

84,712,748

$

37.29

5.29

$

7,545.2

Vested and non-vested options expected to vest at March 31, 2026

  ​

83,146,659

$

36.80

 

5.24

$

7,446.0

Exercisable options at March 31, 2026

  ​

55,722,782

$

27.14

 

4.12

$

5,528.2

A summary of the status of the Company’s non-vested options as of March 31, 2026 and changes during the three months then ended is as follows:

  ​ ​ ​

  ​ ​ ​

Weighted

 

Average

Fair Value at 

Options

Grant Date

 

Non-vested options at January 1, 2026

 

29,426,936

$

15.58

Options granted

 

41,924

 

37.69

Options vested

 

(411,059)

 

11.68

Options forfeited

 

(67,835)

 

14.88

Non-vested options at March 31, 2026

 

28,989,966

$

15.67

During the three months ended March 31, 2026 and 2025, the following activity occurred under the Company’s option plans:

 

Three Months Ended

  ​ ​ ​

 

March 31, 

2026

2025

Total intrinsic value of stock options exercised

$

504.4

$

140.3

Total fair value of stock options vested

 

4.8

 

2.3

As of March 31, 2026, the total compensation cost related to non-vested options not yet recognized was approximately $324.4 with a weighted average expected amortization period of 3.28 years.

The grant-date fair value of each option grant under the 2009 Employee Option Plan and the 2017 Option Plan is estimated using the Black-Scholes option pricing model. The grant-date fair value of each share grant is determined based on the closing share price of the Company’s Common Stock on the date of the grant. The fair value is then amortized on a straight-line basis over the requisite service period of the awards, which is generally the vesting period. Use of a valuation model for option grants requires management to make certain assumptions with respect to selected model inputs. Expected share price volatility is calculated based on the historical volatility of the Common Stock and implied volatility derived from related exchange traded options. The average expected life is based on the contractual term of the option and expected exercise and historical experience. The risk-free interest rate is based on U.S. Treasury zero-coupon issuances with a remaining term equal to the expected life assumed at the date of grant. The expected annual dividend per share is based on the Company’s dividend rate.

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Table of Contents

Restricted Stock

On May 16, 2024, the Company’s stockholders approved the 2024 Restricted Stock Plan for Directors of Amphenol Corporation (the “2024 Directors Restricted Stock Plan”), which is administered by the Compensation Committee of the Board and reserves 500,000 shares of the Company’s Common Stock for future issuance pursuant to the plan. As of March 31, 2026, the number of restricted shares available for grant under the 2024 Directors Restricted Stock Plan was 461,092. Restricted shares granted under the 2024 Directors Restricted Stock Plan vest on the earlier of the first anniversary of the date of grant or the day immediately prior to the date of the next regular annual meeting of the Company’s stockholders following such date of grant. Grants under the 2024 Directors Restricted Stock Plan entitle the holder to receive shares of the Company’s Common Stock without payment. The 2024 Directors Restricted Stock Plan will expire on May 15, 2034, after which date no awards may be granted under the plan.

Restricted share activity for the three months ended March 31, 2026 was as follows:

Weighted Average

Remaining

Restricted

Fair Value at 

Amortization

  ​

Shares

 

Grant Date

 

Term (in years)

 

Restricted shares outstanding at January 1, 2026

 

16,520

$

86.88

0.37

Restricted shares granted

 

548

 

136.25

Restricted shares outstanding at March 31, 2026

 

17,068

$

88.47

 

0.13

As of March 31, 2026, the total compensation cost related to non-vested restricted shares not yet recognized was approximately $0.2.

Note 9—Earnings Per Share

Basic earnings per common share (“EPS”) is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of common shares outstanding. Diluted EPS is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of outstanding common shares, including dilutive common shares, the dilutive effect of which relates to stock options. The following is a reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding, which were used to calculate the earnings per share (basic and diluted) for the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

(dollars and shares in millions, except per share data)

  ​ ​

2026

  ​ ​

2025

  ​ ​

Net income attributable to Amphenol Corporation stockholders

$

933.0

$

737.8

Weighted average common shares outstanding — Basic

 

1,228.9

 

1,209.8

Effect of dilutive stock options

 

60.8

 

56.4

Weighted average common shares outstanding — Diluted

 

1,289.7

 

1,266.2

Net income attributable to Amphenol Corporation per common share — Basic

$

0.76

$

0.61

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.72

$

0.58

There were no anti-dilutive common shares excluded from the computation above for the three months ended March 31, 2026. Excluded from the computation above were anti-dilutive common shares (primarily related to outstanding stock options) of 8.2 million for the three months ended March 31, 2025.

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Note 10—Benefit Plans and Other Postretirement Benefits

The Company and certain of its domestic subsidiaries have defined benefit pension plans (the “U.S. Pension Plans”), which cover certain U.S. employees and which represent the majority of the plan assets and benefit obligations of the aggregate defined benefit plans of the Company. The U.S. Pension Plans’ benefits are generally based on years of service and compensation and are generally noncontributory. The majority of U.S. employees are not covered by the U.S. Pension Plans and are instead covered by various defined contribution plans. The Company also has an unfunded Supplemental Employee Retirement Plan (“SERP” and, together with the U.S. Pension Plans, “U.S. Plans”), which provides for the payment of the portion of annual pension that cannot be paid from the retirement plan as a result of regulatory limitations on average compensation for purposes of the benefit computation. Certain foreign subsidiaries have defined benefit plans covering their employees (the “Foreign Plans” and, together with the U.S. Plans, the “Plans”).

The following is a summary, based on the most recent actuarial valuations, of the components of the Company’s net pension expense of the Company’s defined benefit plans for the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

  ​ ​ ​

2026

 

2025

Service cost

 

$

3.3

$

0.8

Interest cost

 

12.5

 

5.8

Expected return on plan assets

 

(13.8)

 

(6.6)

Amortization of prior service cost

 

0.3

 

0.3

Amortization of net actuarial losses

 

0.7

 

0.8

Net pension expense

 

$

3.0

$

1.1

There is no current requirement for cash contributions to any of the U.S. Plans, and the Company plans to evaluate annually, based on actuarial calculations and the investment performance of the Plans’ assets, the timing and amount of cash contributions in the future, if any.

The Company offers various defined contribution plans for certain U.S. and foreign employees. Participation in these plans is based on certain eligibility requirements. The Company matches employee contributions to the U.S. defined contribution plans up to a maximum of 7% of eligible compensation. During the three months ended March 31, 2026 and 2025, the Company provided matching contributions to the U.S. defined contribution plans of approximately $14.3 and $10.6, respectively.

Note 11—Acquisitions

2026 Acquisitions

On January 9, 2026, the Company completed the acquisition of the Connectivity and Cable Solutions business (which we now refer to collectively as “CommScope”) of Vistance Networks, Inc. (“Vistance,” formerly known as CommScope Holding Company, Inc.) for an aggregate purchase price of $10,592.9 in cash, subject to customary post-closing adjustments. CommScope is included in the Communications Solutions segment. The CommScope acquisition was funded through a combination of net proceeds from the Delayed Draw Term Loans, the November Senior Notes and cash on hand, as discussed in Note 4 herein. CommScope adds significant fiber optic interconnect capabilities for the IT datacom and communications networks markets, as well as a diverse range of industrial interconnect products for the building infrastructure connectivity market. The accompanying Condensed Consolidated Statements of Income include the results of CommScope for the period from the acquisition date through March 31, 2026. Net sales and Net loss from CommScope during this period were $871.5 and $9.0, respectively. The Net loss excludes interest expense and external transaction costs related to the acquisition and includes $155.5 ($119.1 after-tax) of non-cash amortization related to the value associated with acquired backlog and acquisition-related inventory step-up discussed below.

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Table of Contents

Acquisition-related expenses

During the three months ended March 31, 2026, the Company incurred a total of $248.9 ($200.6 after-tax, or $0.16 per diluted share) of acquisition-related expenses, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the CommScope and Trexon acquisitions and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $116.9, of which $90.3 relates to the CommScope acquisition, are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $132.0 associated with the CommScope acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

Preliminary Allocation of Purchase Price

The purchase price for the CommScope acquisition was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed of CommScope based upon their estimated fair values. The excess purchase price over the fair value of the underlying net assets acquired was allocated to goodwill, which primarily represents the value of assembled workforce along with anticipated cost savings and efficiencies associated with the integration of CommScope and other intangible assets acquired that do not qualify for separate recognition. The Company is in the process of completing its analysis of the fair value of the net assets acquired through the use of independent valuations and management’s estimates. Since the following information is based on preliminary assessments made by management as of March 31, 2026, the acquisition accounting for CommScope is subject to final adjustment and it is possible that the final assessment of values may differ from this preliminary assessment. The following table summarizes the preliminary assessment of the estimated fair values of the identifiable assets acquired and liabilities assumed, as of the date of acquisition of January 9, 2026.

ASSETS

Cash and cash equivalents

$

204.4

Accounts receivable

720.0

Inventories

 

656.1

Prepaid expenses and other current assets

 

65.1

Property, plant and equipment, net

 

319.7

Goodwill

 

6,978.4

Other intangible assets, net

 

3,306.0

Other long-term assets

 

319.8

Assets acquired

 

12,569.5

LIABILITIES

Accounts payable

 

416.4

Accrued salaries, wages and employee benefits

137.6

Other accrued expenses

265.9

Deferred income taxes

730.2

Other long-term liabilities

215.2

Noncontrolling interests

6.9

Liabilities assumed

 

1,772.2

Net assets acquired

 

$

10,797.3

The $3,306.0 of acquired intangible assets is comprised of $1,456.0, $1,211.0, $592.0 and $47.0 assigned to proprietary technology, customer relationships, trade names and backlog, respectively, all of which are subject to amortization. These finite-lived acquired intangible assets have a total weighted average useful life of approximately 16 years. The proprietary technology, customer relationships, trade names and backlog have a weighted average useful life of 14 years, 16 years, 22 years and 0.5 years, respectively. These finite-lived intangible assets will be amortized based upon the underlying pattern of economic benefit as reflected by the future net cash inflows. The entire amount of goodwill was assigned to the Communications Solutions segment, none of which is expected to be deductible for tax purposes.

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Pro Forma Financial Information

The following table summarizes the unaudited pro forma combined financial information assuming that the CommScope acquisition had occurred on January 1, 2025, and its results had been included in our financial results for the full three months ended March 31, 2026 and 2025. The pro forma amounts are based upon available information and reflect a reasonable estimate of the effects of the CommScope acquisition for the periods presented on the basis set forth herein. The following unaudited pro forma financial information is presented for informational purposes only and does not purport to represent what the results of operations would have been had the CommScope acquisition in fact occurred on the date assumed, nor is it necessarily indicative of the results that may be expected in future periods.

Three Months Ended

March 31,

Pro forma:

  ​ ​ ​

2026

  ​ ​ ​

2025

Net sales

 

$

7,707.7

 

$

5,535.1

Net income attributable to Amphenol Corporation

 

1,120.1

 

496.8

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.87

$

0.39

The unaudited pro forma financial information includes the historical operating results of the Company and CommScope prior to the acquisition, with directly attributable adjustments to reflect the additional depreciation and amortization, the associated incurrence of interest expense and interest income earned, acquisition-related costs and the consequential tax effects from January 1, 2025. The unaudited pro forma financial information for the three months ended March 31, 2026 was adjusted to remove $222.3 ($181.0 after-tax, or $0.14 per diluted share) of nonrecurring acquisition-related expenses resulting from the CommScope acquisition, comprised of (i) $66.8 in transaction expenses, (ii) $132.0 related to amortization of inventory step-up costs, and (iii) $23.5 of amortization related to the value associated with acquired backlog. The unaudited pro forma financial information for the three months ended March 31, 2025 was adjusted to recognize $243.2 ($201.9 after-tax, or $0.16 per diluted share) of nonrecurring acquisition-related expenses resulting from the CommScope acquisition, comprised of (i) $87.7 in transaction expenses, (ii) $132.0 related to amortization of inventory step-up costs, and (iii) $23.5 of amortization related to the value associated with acquired backlog. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have been achieved had the CommScope acquisition been consummated as of the date indicated, nor indicative of any future results, including the realization of any synergies or cost savings.

2025 Acquisitions

During the year ended December 31, 2025, the Company completed five acquisitions (collectively, the “2025 Acquisitions”), including (i) the acquisition of the Outdoor Wireless Networks segment and Distributed Antenna Systems business (collectively, “Andrew”) from Vistance and (ii) the acquisition of Trexon, for approximately $3,818.6, net of cash acquired. The Andrew acquisition is included in the Communications Solutions segment, three acquisitions, including Trexon, are included in the Harsh Environment Solutions segment, and one acquisition is included in the Interconnect and Sensor Systems segment. The 2025 Acquisitions were each funded using cash on hand, proceeds from senior notes, borrowings under the U.S. Commercial Paper Program, or a combination thereof.

As of March 31, 2026, the 2025 Acquisitions resulted in the recognition of $2,162.5 of goodwill and $1,203.0 of definite-lived intangible assets, comprised of customer relationships, proprietary technology and acquired backlog, with the remainder of the purchase price being allocated to other identifiable assets acquired and liabilities assumed. These definite-lived intangible assets are being amortized based upon the underlying pattern of economic benefit as reflected by the future net cash inflows, with the acquired customer relationships having useful lives ranging from 10 to 18 years, the proprietary technology having useful lives ranging from 10 to 15 years, and the acquired backlog having a useful life of approximately 0.4 years. The excess purchase price over the fair value of the underlying assets acquired (net of liabilities assumed) was allocated to goodwill, which primarily represents the value of the assembled workforce along with other intangible assets acquired that do not qualify for separate recognition. The Company expects that $672.8 of the goodwill recognized from the 2025 Acquisitions will be deductible for tax purposes.

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The Company completed the acquisition accounting, including the analyses of fair value of assets acquired and liabilities assumed, for two of the 2025 Acquisitions, including the Andrew acquisition, and the final assessment of values did not differ materially from the previous preliminary assessment. The Company is in the process of analyzing and completing the allocation of the fair value of the assets acquired and liabilities assumed for the other three 2025 Acquisitions. Since the current purchase price allocations for such acquisitions are based on preliminary assessments made by management, the acquisition accounting is subject to final adjustments, and it is possible that the final assessments of values may differ from the Company’s preliminary assessments. The operating results of the 2025 Acquisitions were included in the Condensed Consolidated Statements of Income since their respective dates of acquisition. Pro forma financial information, as well as further details regarding the purchase price allocations related to these acquisitions, have not been presented, since the 2025 Acquisitions were not material, either individually or in the aggregate, to the Company’s financial results.

Acquisition-related expenses

During the three months ended March 31, 2025, the Company incurred $104.9 ($82.1 after-tax, or $0.06 per diluted share) of acquisition-related expenses, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the Andrew acquisition and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $44.0 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $60.9 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

Note 12—Goodwill and Other Intangible Assets

The changes in the carrying amount of goodwill by segment were as follows:

  ​ ​ ​

Harsh

  ​ ​ ​

Interconnect

  ​ ​ ​

 

Communications

Environment

and Sensor

 

Solutions

Solutions

Systems

Total

 

Goodwill at December 31, 2025

$

3,858.6

$

4,270.2

$

2,446.6

$

10,575.4

Acquisition-related

 

6,983.5

 

3.9

 

1.3

 

6,988.7

Foreign currency translation

 

(1.5)

 

(5.0)

 

(14.7)

 

(21.2)

Goodwill at March 31, 2026

$

10,840.6

$

4,269.1

$

2,433.2

$

17,542.9

The increase in goodwill during the first three months of 2026 was driven by goodwill recognized from the CommScope acquisition.

Other than goodwill noted above, the Company’s intangible assets as of March 31, 2026 and December 31, 2025 were as follows:

March 31, 2026

December 31, 2025

Weighted

Gross

  ​ ​ ​

  ​ ​ ​

Net

  ​ ​ ​

Gross

  ​ ​ ​

  ​ ​ ​

Net

Average

Carrying

Accumulated

Carrying

Carrying

Accumulated

Carrying

Life (years)

Amount

Amortization

Amount

Amount

Amortization

Amount

Customer relationships

14

$

3,049.9

$

682.1

$

2,367.8

$

1,841.2

$

635.1

$

1,206.1

Proprietary technology

14

 

2,419.7

 

273.1

2,146.6

 

963.9

 

230.2

733.7

Trade names (1)

22

 

603.3

9.2

594.1

11.3

2.2

9.1

Backlog and other (1)

1

 

252.0

 

228.5

23.5

 

205.1

 

181.7

23.4

Total intangible assets (definite-lived)

14

6,324.9

1,192.9

5,132.0

3,021.5

1,049.2

1,972.3

Trade names (indefinite-lived)

269.1

269.1

269.1

269.1

Total

$

6,594.0

$

1,192.9

$

5,401.1

$

3,290.6

$

1,049.2

$

2,241.4

(1) Certain prior period amounts have been reclassified to conform to the current period presentation.

The increase in the gross carrying amount of intangible assets in the first three months of 2026 was primarily driven by certain customer relationships, proprietary technology, trade names and acquired backlog recognized as a result of the CommScope acquisition. Amortization expense for the three months ended March 31, 2026 and 2025 was

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approximately $145.6 and $47.3, respectively. Amortization expense for the three months ended March 31, 2026 includes $46.9 related to the amortization of acquired backlog resulting from the CommScope and Trexon acquisitions. Amortization expense for the three months ended March 31, 2025 includes $10.0 related to the amortization of acquired backlog resulting from the Andrew acquisition. Amortization expense relating to the Company’s current intangible assets as of March 31, 2026 estimated for the remainder of 2026 is approximately $318.6, and for each of the next five fiscal years is approximately $387.0 in 2027, $379.8 in 2028, $368.9 in 2029, $366.2 in 2030 and $359.7 in 2031.

Note 13—Reportable Business Segments

The Company organizes its reportable business segments based on the manner in which management evaluates the performance of the Company, combined with the nature of the individual business activities and the product-based solutions offered. The Company aligns its businesses into the following three reportable business segments:

Communications Solutions – the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other interconnect products; coaxial, fiber optic and high-speed cable; antennas; and other products for use in the information technology and data communications, mobile devices, industrial, communications networks, automotive, commercial aerospace and defense end markets.

Harsh Environment Solutions – the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products for use in the industrial, defense, commercial aerospace, automotive, communications networks and information technology and data communications end markets.

Interconnect and Sensor Systems – the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems used in the automotive, industrial, information technology and data communications, communications networks, defense and commercial aerospace end markets.

This segment structure reflects (i) the manner in which the Chief Operating Decision Maker (“CODM”), who is the Company’s Chief Executive Officer, regularly assesses information for decision-making purposes, including the allocation of resources, and (ii) how the Company operates its businesses, assesses performance, and communicates results and strategy, among other items, to the Board and its stockholders. The Company has three segment managers to lead their respective reportable business segments, each reporting directly to the Chief Executive Officer. The accounting policies of the segments are the same as those for the Company as a whole and are described herein and in Note 1 of the Notes to Consolidated Financial Statements in the 2025 Annual Report. The Company’s CODM assesses each segment’s performance and allocates resources to each of them based on net sales and operating income as adjusted for certain corporate and other related items and before interest, stock-based compensation expense, income taxes, amortization related to certain intangible assets and other non-cash purchase accounting costs, and nonrecurring gains and losses, as outlined in the table below (we refer to this measure as segment operating income). Intersegment net sales and operating expenses have been eliminated in the computation of consolidated net sales and operating income.

The CODM considers period-to-period variances in net sales and segment operating income on a regular basis and uses that information when making decisions about the allocation of operating and capital resources to each segment. Other than segment operating expenses (which is easily computable from the difference between net sales and segment operating income), our CODM is not regularly provided disaggregated segment level expense information as such information is not used in our CODM’s decision-making related to the allocation of operating and capital resources to our segments. The Company also incurs general corporate expenses and costs which are not allocated to the reportable business segments but have been included in “Corporate / Other” in the following table for reconciliation purposes. Assets are reviewed by the CODM on a consolidated basis and therefore are not presented by reportable business segment.

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The following table (i) summarizes, by segment, total sales, intersegment sales and external net sales and (ii) reconciles each segment’s external net sales to their respective segment operating income, including segment operating expenses, for the three months ended March 31, 2026 and 2025:

Communications Solutions

Harsh Environment Solutions

Interconnect and Sensor Systems

Total

Three Months Ended March 31, 2026

Total sales

$

4,561.0

$

1,725.4

$

1,413.3

$

7,699.7

Less: Intersegment sales

26.3

32.3

21.0

79.6

External net sales

4,534.7

1,693.1

1,392.3

7,620.1

Less: Segment operating expenses (1)

3,145.3

1,219.8

1,110.6

5,475.7

Segment operating income

$

1,389.4

$

473.3

$

281.7

$

2,144.4

Three Months Ended March 31, 2025

Total sales

$

2,429.5

$

1,295.0

$

1,138.9

$

4,863.4

Less: Intersegment sales

15.8

26.8

9.8

52.4

External net sales

2,413.7

1,268.2

1,129.1

4,811.0

Less: Segment operating expenses (1)

1,752.9

957.0

924.6

3,634.5

Segment operating income

$

660.8

$

311.2

$

204.5

$

1,176.5

_____________________________

(1)The aggregated amount is comprised of cost of sales, selling, general and administrative expenses, and other segment related expenses.

Segment operating income and the reconciliation of segment operating income to consolidated income before income taxes for the three months ended March 31, 2026 and 2025 are as follows:

Three Months Ended

March 31, 

2026

2025

Total segment operating income

$

2,144.4

$

1,176.5

Corporate / Other:

Stock-based compensation expense

(34.2)

(26.6)

Amortization of acquisition-related inventory step-up costs

(132.0)

(60.9)

Acquisition-related expenses

(116.9)

(44.0)

Other operating expenses

(29.5)

(20.2)

Operating income

1,831.8

1,024.8

Interest expense

(207.9)

(76.5)

Other income (expense), net

21.8

14.6

Income before income taxes

$

1,645.7

$

962.9

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Depreciation and amortization expense by segment for the three months ended March 31, 2026 and 2025 is as follows:

  ​ ​ ​

Three Months Ended

March 31, 

2026

2025

Communications Solutions

$

211.3

$

89.8

Harsh Environment Solutions

 

47.9

38.3

Interconnect and Sensor Systems

40.0

34.7

Corporate / Other

186.6

73.5

Total

$

485.8

$

236.3

For the three months ended March 31, 2026, depreciation and amortization expense in Corporate / Other includes (i) $46.9 related to the amortization of acquired backlog resulting from the CommScope and Trexon acquisitions, which is included in Acquisition-related expenses in the Condensed Consolidated Statements of Income, and (ii) $132.0 of amortization of acquisition-related inventory step-up costs associated with the CommScope acquisition, which is included in Cost of sales in the Condensed Consolidated Statements of Income, as discussed in Note 11 herein. For the three months ended March 31, 2025, depreciation and amortization expense in Corporate / Other includes (i) $10.0 related to the amortization of acquired backlog resulting from the Andrew acquisition, which is included in Acquisition-related expenses in the Condensed Consolidated Statements of Income, and (ii) $60.9 of amortization of acquisition-related inventory step-up costs associated with the Andrew acquisition, which is included in Cost of sales in the Condensed Consolidated Statements of Income, as discussed in Note 11 herein. These expenses are reported in Corporate / Other, since they are not components in the determination of segment operating income.

Note 14—Revenue Recognition

Revenues consist of product sales to either end customers and their appointed contract manufacturers (including original equipment manufacturers) or to distributors, and the vast majority of our sales are recognized at a point-in-time under the core principle of recognizing revenue when control transfers to the customer. With limited exceptions, the Company recognizes revenue at the point in time when we ship or deliver the product from our manufacturing facility to our customer, when our customer accepts and has legal title of the goods, and where the Company has a present right to payment for such goods. For the three months ended March 31, 2026 and 2025, less than 5% of our net sales were recognized over time, where the associated contracts relate to the sale of goods with no alternative use as they are only sold to a single customer and whose underlying contract terms provide the Company with an enforceable right to payment, including a reasonable profit margin, for performance completed to date, in the event of customer termination. Since we typically invoice our customers at the same time that we satisfy our performance obligations, contract assets and contract liabilities related to our contracts with customers recorded in the Condensed Consolidated Balance Sheets were not material as of March 31, 2026 and December 31, 2025. These amounts are recorded in the accompanying Condensed Consolidated Balance Sheets within Prepaid expenses and other current assets or Other accrued expenses as of March 31, 2026 and December 31, 2025.

The Company receives customer orders negotiated with multiple delivery dates that may extend across more than one reporting period until the contract is fulfilled, the end of the order period is reached, or a pre-determined maximum order value has been reached. Orders typically fluctuate from quarter to quarter based on customer demand and general business conditions. It is generally expected that a substantial portion of our remaining performance obligations will be fulfilled within three months, and nearly all of our performance obligations are fulfilled within one year. Since our performance obligations are part of contracts that generally have original durations of one year or less, we have not disclosed the aggregate amount of transaction prices associated with unsatisfied or partially unsatisfied performance obligations as of March 31, 2026.

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While the Company typically offers standard product warranty coverage that provides assurance that our products will conform to the contractually agreed-upon specifications for a limited period from the date of shipment, the Company’s warranty liabilities as of March 31, 2026 and December 31, 2025, and related warranty expense for the three months ended March 31, 2026 and 2025, have not been and were not material in the accompanying Condensed Consolidated Financial Statements.

Disaggregation of Net Sales

The following table shows our net sales disaggregated into categories the Company considers meaningful to depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors for the three months ended March 31, 2026 and 2025:

Harsh

Communications

Environment

Interconnect and

Total Reportable

Solutions

Solutions

Sensor Systems

Business Segments

Three Months Ended March 31,

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

2026

  ​

2025

Net sales by:

Sales channel:

 

End customers and contract manufacturers

 

$

3,197.5

 

$

1,916.7

$

1,231.4

 

$

924.6

 

$

1,334.4

 

$

1,087.6

$

5,763.3

 

$

3,928.9

Distributors and resellers

 

1,337.2

 

497.0

 

461.7

 

343.6

 

57.9

 

41.5

 

1,856.8

 

882.1

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

Geography:

United States

$

1,617.2

$

604.8

$

922.3

$

686.4

$

412.3

$

352.4

$

2,951.8

$

1,643.6

China

 

587.4

 

481.8

 

136.1

 

106.2

 

214.5

 

205.9

938.0

793.9

Other foreign locations

 

2,330.1

 

1,327.1

 

634.7

 

475.6

 

765.5

 

570.8

 

3,730.3

2,373.5

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

Net sales by geographic area are based on the customer location to which the product is shipped. As the Company is not organized by product or group of products, it is impracticable to disclose net sales by product or group of products.

Note 15—Commitments and Contingencies

The Company is party to a number of legal and/or regulatory actions arising out of the normal course of its business. The Company records a loss contingency liability when, in the opinion of management after seeking legal advice, a loss is considered probable and the amount can be reasonably estimated. Based on information currently available and management’s evaluation of such information, the Company does not believe that the resolution of any existing legal or regulatory action is expected to have a material adverse effect on the Company’s financial condition, results of operations or cash flows. The Company’s legal costs associated with defending itself are recorded to expense as incurred.

Certain operations of the Company are subject to environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

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Item 2.

MANAGEMENT’S DISCUSSION AND ANALYSIS

OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(amounts in millions, except share and per share data, unless otherwise noted)

The following discussion and analysis of the financial condition and results of operations for the three months ended March 31, 2026 and 2025 has been derived from and should be read in conjunction with our unaudited Condensed Consolidated Financial Statements and the accompanying notes thereto included in Part I, Item 1 herein for Amphenol Corporation (together with its subsidiaries, “Amphenol,” the “Company,” “we,” “our” or “us”). The following discussion and analysis should also be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “2025 Annual Report”). The Condensed Consolidated Financial Statements have been prepared in U.S. dollars, in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP” or “GAAP”). The following discussion and analysis also includes references to certain non-GAAP financial measures, which are defined in the “Non-GAAP Financial Measures” section below, including “Constant Currency Net Sales Growth” and “Organic Net Sales Growth.” For purposes of the following discussion, the terms “constant currencies” and “organically” have the same meaning, respectively, as these aforementioned non-GAAP financial measures. Refer to “Non-GAAP Financial Measures” within this Item 2 for more information, including our reasons for including non-GAAP financial measures and material limitations with respect to the usefulness of the measures.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which relate to future events and are subject to risks and uncertainties, including but not limited to, the risk factors described in Part I, Item 1A. of the 2025 Annual Report. All statements that address events or developments that we expect or believe may or will occur in the future are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such forward-looking statements are based on our management’s assumptions and beliefs about future events or circumstances using information currently available, and as a result, they are subject to risks and uncertainties. The forward-looking statements, which address the Company’s expected business and financial performance and financial condition, among other matters, may contain words and terms such as: “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “guidance,” “intend,” “look ahead,” “may,” “ongoing,” “optimistic,” “plan,” “potential,” “predict,” “project,” “seek,” “should,” “target,” “will” or “would” and other words and terms of similar meaning.

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Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements about expected earnings, revenues, growth, liquidity, effective tax rate, interest rates, anticipated benefits of certain acquisitions, financing sources, the expected timing for the closing of certain acquisitions or other matters. Although the Company believes the expectations reflected in all forward-looking statements are based upon reasonable assumptions, the expectations may not be attained or there may be material deviation. Readers and investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. There are risks and uncertainties that could cause actual results to differ materially from these forward-looking statements, which include, but are not limited to, the following: political, economic, military and other risks related to operating in countries outside the United States, as well as changes in general economic conditions, geopolitical conditions, U.S. and other countries’ trade and tax policies, export control laws, sanctions, legislation, treaties and tariffs and other factors beyond the Company’s control; uncertainties associated with an economic slowdown or recession in any of the Company’s end markets that could negatively affect the financial condition of our customers and could result in reduced demand; risks associated with our inability to obtain certain raw materials and components, as well as the increasing cost of certain of the Company’s raw materials and components; cybersecurity threats and techniques used to disrupt operations and gain unauthorized access to our and third-party providers’ information technology systems, including, but not limited to, malware, social engineering/phishing, credential harvesting, ransomware, malfeasance by insiders, human or technological error and other increasingly sophisticated attacks, that continue to expand and evolve, including through the use of artificial intelligence and machine learning, which could, among other things, impair our information technology systems and disrupt business operations, result in reputational damage that may cause the loss of existing or future customers, loss of our intellectual property, the loss of or inability to access confidential information and critical business, financial or other data, and/or cause the release of highly sensitive confidential or personal information, and potentially lead to litigation and/or governmental investigations, fines and other penalties, among other risks, and risks and impacts associated with an increasingly demanding regulatory environment surrounding information security and privacy, including significant fines, penalties and other related costs; negative impacts caused by extreme weather conditions and natural catastrophic events, including those caused or intensified by climate change; risks associated with the improper conduct by any of our employees, customers, suppliers, distributors or any other business partners which could impair our business reputation and financial results and could result in our non-compliance with anti-corruption laws and regulations of the U.S. government and various foreign jurisdictions; changes in exchange rates of the various currencies in which the Company conducts business; the risks associated with the Company’s dependence on attracting, recruiting, hiring and retaining skilled employees, including as part of our various management teams; risks and difficulties in trying to compete successfully on the basis of technology innovation, product quality and performance, price, customer service and delivery time; the Company’s dependence on end market dynamics to sell its products, particularly certain end markets that are subject to cyclical and at times rapid periods of reduced demand; difficulties and unanticipated expenses in connection with purchasing and integrating newly acquired businesses, including the potential for the impairment of goodwill and other intangible assets; events beyond the Company’s control that could lead to an inability to meet its financial and other covenants and requirements, which could result in a default under the Company’s credit agreements or any of our various senior notes; risks associated with increased debt and interest expense as a result of the CommScope acquisition; risks associated with the Company’s inability to access the global capital markets on favorable terms, including as a result of significant deterioration of general economic or capital market conditions, or as a result of a downgrade in the Company’s credit rating; changes in interest rates; government contracting risks that the Company may be subject to, including laws and regulations governing reporting obligations, performance of government contracts and related risks associated with conducting business with the U.S. and other foreign governments or their suppliers (both directly and indirectly); governmental export and import controls as well as sanctions and trade embargoes that certain of our products may be subject to, including export licensing, customs regulations, economic sanctions and other laws; changes in fiscal and tax policies, audits and examinations by taxing authorities, laws, regulations and guidance in the United States and foreign jurisdictions, as well as challenges from tax authorities on the Company’s tax positions; any difficulties in enforcing and protecting the Company’s intellectual property rights; litigation, customer claims, voluntary or forced product recalls, governmental investigations, criminal liability or environmental matters including changes to laws and regulations to which the Company may be subject; and incremental costs, risks and regulations associated with efforts to combat the negative effects of climate change and other sustainability matters.

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A further description of these uncertainties and other risks can be found in the 2025 Annual Report, Quarterly Reports on Form 10-Q and the Company’s other reports filed with the Securities and Exchange Commission. These or other uncertainties not identified in these documents (that we either currently do not expect to have an adverse effect on our business or that we are unable to predict or identify at this time) may cause the Company’s actual future results to be materially different from those expressed in any forward-looking statements. Our forward-looking statements may also be impacted by, among other things, future tax, regulatory and other legal changes that may arise in any of the jurisdictions in which we operate. The Company undertakes no obligation to update or revise any forward-looking statements except as required by law.

Reportable Business Segments

The Company aligns its businesses into the following three reportable business segments:

Communications Solutions – the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other interconnect products; coaxial, fiber optic and high-speed cable; antennas; and other products for use in the information technology and data communications, mobile devices, industrial, communications networks, automotive, commercial aerospace and defense end markets.

Harsh Environment Solutions – the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products for use in the industrial, defense, commercial aerospace, automotive, communications networks and information technology and data communications end markets.

Interconnect and Sensor Systems – the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems used in the automotive, industrial, information technology and data communications, communications networks, defense and commercial aerospace end markets.

Refer to Note 13 of the Notes to Condensed Consolidated Financial Statements, as well as the 2025 Annual Report, for further details related to the Company’s reportable business segments.

Pillar Two Framework

The Organization for Economic Co-operation and Development (OECD)/G20 Inclusive Framework, known as Pillar Two, provides guidance for a global minimum tax. This guidance lays out a common approach for adopting the global minimum tax and enacting local legislation codifying the provisions that all 142 countries in the Inclusive Framework agreed to by consensus. The European Union (“EU”) member states have agreed to adopt these rules in two stages. The first component became effective on January 1, 2024, and the second component became effective January 1, 2025. Non-EU countries have enacted or are expected to enact legislation on a similar timeline. Certain countries in which we operate have already enacted legislation to adopt the Pillar Two framework, while several other countries are expected to also implement similar legislation with varying effective dates in the future. When and how this framework is adopted or enacted by the various countries in which we do business will increase tax complexity and may increase uncertainty and adversely affect our provision for income taxes in the U.S. and non-U.S. jurisdictions. The Company has done a preliminary review of currently enacted legislation. The implementation did not have a material impact on the Company’s condensed consolidated financial statements during the three months ended March 31, 2026, and it is not currently expected to have a material impact on the Company’s operations, financial condition or cash flows in the future. However, the Company will continue to evaluate the potential impact of Pillar Two on the Company and its results as additional countries adopt legislation and issue individual guidance on their enacted legislation.

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Results of Operations

Three months ended March 31, 2026 compared to the three months ended March 31, 2025

Net sales were $7,620.1 in the first quarter of 2026 compared to $4,811.0 in the first quarter of 2025, representing an increase of 58% in U.S. dollars, 57% in constant currencies and 33% organically (excluding both currency and acquisition impacts; unless otherwise indicated, organic net sales growth is primarily driven by higher sales volumes), compared to the prior year period. The increase in net sales in the first quarter of 2026 was driven by strong organic growth in all three of the Company’s operating segments, along with contributions from the Company’s acquisition program, as described below. From an end market standpoint, the increase in net sales in the first quarter of 2026 relative to the prior year period was driven by outsized organic growth in the information technology and data communications (“IT datacom”) market, and strong organic growth in the industrial, defense and commercial aerospace markets, along with contributions from the Company’s acquisition program.

Net sales in the Communications Solutions segment (approximately 60% of net sales) in the first quarter of 2026 increased 88% in U.S. dollars, 87% in constant currencies and 47% organically, compared to the first quarter of 2025. The increase in the first quarter of 2026 was driven by outsized organic growth in the IT datacom market, with particular strength in artificial intelligence (“AI”)-related applications, as well as strong organic growth in the industrial market, along with contributions from the Company’s acquisition program.

Net sales in the Harsh Environment Solutions segment (approximately 22% of net sales) in the first quarter of 2026 increased 34% in U.S. dollars, 31% in constant currencies and 23% organically, compared to the first quarter of 2025. The increase in the first quarter of 2026 was driven by strong organic growth in the defense, industrial, commercial aerospace, automotive and IT datacom markets, along with contributions from the Company’s acquisition program.

Net sales in the Interconnect and Sensor Systems segment (approximately 18% of net sales) in the first quarter of 2026 increased 23% in U.S. dollars, 20% in constant currencies and 17% organically, compared to the first quarter of 2025. The increase in the first quarter of 2026 was driven by outsized organic growth in the IT datacom market, with particular strength in AI-related applications, along with contributions from the Company’s acquisition program.

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The table below reconciles Constant Currency Net Sales Growth and Organic Net Sales Growth to the most directly comparable U.S. GAAP financial measures, by segment, geography and consolidated, for the three months ended March 31, 2026 compared to the three months ended March 31, 2025:

Percentage Growth (relative to same prior year period) (1)

Net sales

Foreign

Constant

Organic

growth in

currency

Currency Net

Acquisition

Net Sales

U.S. Dollars (2)

impact (3)

Sales Growth (4)

impact (5)

Growth (4)

Three Months Ended March 31, 

  ​

2026

  ​ ​

2025

  ​ ​

(GAAP)

(non-GAAP)

(non-GAAP)

(non-GAAP)

(non-GAAP)

Net sales by:

Segment:

Communications Solutions

$

4,534.7

$

2,413.7

88

%  

1

%  

87

%  

40

%  

47

%  

Harsh Environment Solutions

1,693.1

 

1,268.2

34

%  

2

%  

31

%  

9

%  

23

%  

Interconnect and Sensor Systems

 

1,392.3

 

1,129.1

23

%  

4

%  

20

%  

3

%  

17

%  

Consolidated

$

7,620.1

$

4,811.0

58

%  

2

%  

57

%  

23

%  

33

%  

Geography (6):

 

 

United States

$

2,951.8

 

$

1,643.6

80

%  

1

%  

79

%  

49

%  

30

%  

Foreign

 

4,668.3

 

3,167.4

47

%  

3

%  

45

%  

9

%  

35

%  

Consolidated

$

7,620.1

$

4,811.0

58

%  

2

%  

57

%  

23

%  

33

%  

(1)Percentages in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.
(2)Net sales growth in U.S. dollars is calculated based on Net sales as reported in the Condensed Consolidated Statements of Income and Note 13 of the Notes to Condensed Consolidated Financial Statements. While the term “net sales growth in U.S. dollars” is not considered a U.S. GAAP financial measure, for purposes of this table, we derive the reported (GAAP) measure based on GAAP results, which serves as the basis for the reconciliation to its comparable non-GAAP financial measures.
(3)Foreign currency impact, a non-GAAP measure, represents the percentage impact on net sales resulting from foreign currency exchange rate changes in the current reporting period(s) compared to the same respective period(s) in the prior year. Such amount is calculated by subtracting net sales for the current reporting period(s) translated at average foreign currency exchange rates for the respective prior year period(s) from net sales for the current reporting period(s), taken as a percentage of the respective prior year period(s) net sales.
(4)Constant Currency Net Sales Growth and Organic Net Sales Growth are non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section of this Item 2.
(5)Acquisition impact, a non-GAAP measure, represents the percentage impact on net sales resulting from acquisitions that have not been included in the Company’s consolidated results for the full current period(s) and/or prior comparable period(s) presented. Such net sales related to these acquisitions do not reflect the underlying growth of the Company on a comparative basis. Acquisition impact is calculated as a percentage of the respective prior year period(s) net sales.
(6)Net sales by geographic area are based on the customer location to which the product is shipped.

The comparatively weaker U.S. dollar for the first quarter of 2026 had the effect of increasing sales by approximately $89.9 for such period, relative to the comparable period in 2025.

Operating expenses (defined as Cost of sales and Selling, general and administrative expenses) were $5,671.4, or 74.4% of net sales, for the first quarter of 2026, compared to $3,742.2, or 77.8% of net sales, for the first quarter of 2025. Operating income was $1,831.8, or 24.0% of net sales, for the first quarter of 2026, compared to $1,024.8, or 21.3% of net sales, for the first quarter of 2025. The decrease in Operating expenses as a percentage of net sales and increase in Operating income as a percentage of net sales in the first quarter of 2026 was primarily driven by strong operating performance and disciplined cost control, which generated strong operating leverage on the significant growth experienced during the period, partially offset by the effect of acquisitions, which currently have higher Operating expenses as a percentage of net sales compared to the Company average. Operating income for the first quarter of 2026 includes $248.9 of acquisition-related expenses, comprised of (i) the non-cash amortization of the value associated with acquired backlog resulting from the CommScope and Trexon acquisitions and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $116.9 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $132.0 associated with the CommScope acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income). Operating income for the first quarter of 2025 includes $104.9 of acquisition-related expenses comprised of (i) the non-cash amortization related to the value associated with the acquired backlog resulting from the acquisition of the Outdoor Wireless Networks segment and Distributed Antenna Systems business of Vistance Networks, Inc. (collectively, “Andrew”) and external transaction costs associated with acquisitions (such acquisition-related expenses aggregating $44.0 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $60.9 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

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Operating income for the Communications Solutions segment for the first quarter of 2026 was $1,389.4, or 30.6% of net sales, compared to $660.8, or 27.4% of net sales, for the first quarter of 2025. The increase in operating margin for the Communications Solutions segment relative to the comparable period in 2025 was primarily driven by strong operating leverage on the significantly higher organic sales volumes, partially offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Harsh Environment Solutions segment for the first quarter of 2026 was $473.3, or 28.0% of net sales, compared to $311.2, or 24.5% of net sales, for the first quarter of 2025. The increase in operating margin for the Harsh Environment Solutions segment relative to the comparable period in 2025 was primarily driven by strong operating leverage on the higher organic sales volumes, slightly offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Interconnect and Sensor Systems segment for the first quarter of 2026 was $281.7, or 20.2% of net sales, compared to $204.5, or 18.1% of net sales, for the first quarter of 2025, respectively. The increase in operating margin for the Interconnect and Sensor Systems segment relative to the comparable period in 2025 was primarily driven by strong operating leverage on the higher organic sales volumes.

Interest expense for the first quarter of 2026 was $207.9, compared to $76.5 for the first quarter of 2025. The increase in interest expense for the first quarter of 2026 was primarily driven by higher average borrowing levels, resulting from the issuances of new senior notes during 2025 and 2026, and borrowings under the Delayed Draw Term Loans to fund all or part of acquisitions, including the CommScope acquisition (as defined and discussed below within this Item 2 and in Note 11 of the accompanying Notes to Condensed Consolidated Financial Statements herein). Refer to Note 4 of the Notes to Condensed Consolidated Financial Statements for further information related to the Company’s debt.

Provision for income taxes for the first quarter of 2026 was at an effective tax rate of 42.7%, compared to 22.7%, for the first quarter of 2025. Various items incurred in the first quarter of 2026 and 2025 impacted the effective tax rate and earnings per share by the amounts noted in the tables below. For the first quarter of 2026 and 2025, these items included excess tax benefits resulting from stock option exercise activity, as well as the tax effect of the aforementioned acquisition-related expenses incurred during the period. In addition, for the first quarter of 2026, the effective tax rate was further impacted by an accrual recorded of $130.0 resulting from unfavorable determinations received from relevant tax authorities in China regarding the previously disclosed tax inquiries into certain of the Company’s prior period tax positions, as well as $160.0 in additional tax obligations related to China resulting from the Company’s reassessment of certain tax rate assumptions applied to prior years’ results not subject to the tax inquiries. As a result of this matter, as well as a continued shift in income to higher-tax jurisdictions, during the three months ended March 31, 2026, the Company increased its Adjusted Effective Tax Rate to 27.0%. Therefore, excluding the effect of these items, the Adjusted Effective Tax Rate, a non-GAAP financial measure as defined in the “Non-GAAP Financial Measures” section below within this Item 2, for the three months ended March 31, 2026 and 2025 was 27.0% and 24.5%, respectively, as reconciled in the table below to the comparable effective tax rate based on GAAP results. Refer to Note 6 of the Notes to Condensed Consolidated Financial Statements for further information related to income taxes.

Net income attributable to Amphenol Corporation and Net income attributable to Amphenol Corporation per common share - Diluted (“Diluted EPS”) were $933.0 and $0.72, respectively, for the first quarter of 2026, compared to $737.8 and $0.58, respectively, for the first quarter of 2025. Excluding the effect of the items listed in the tables below, Adjusted Net Income attributable to Amphenol Corporation and Adjusted Diluted EPS, non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section below within this Item 2, were $1,372.7 and $1.06, respectively, for the first quarter of 2026, compared to $799.8 and $0.63, respectively, for the first quarter of 2025.

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The following table reconciles Adjusted Operating Income, Adjusted Operating Margin, Adjusted Net Income attributable to Amphenol Corporation, Adjusted Effective Tax Rate and Adjusted Diluted EPS (each as defined in the “Non-GAAP Financial Measures” section below) to the most directly comparable U.S. GAAP financial measures for the three months ended March 31, 2026 and 2025:

Three Months Ended March 31, 

2026

2025

Net Income

Net Income

attributable

Effective

attributable

Effective

Operating

Operating

to Amphenol

Tax

Diluted

Operating

Operating

to Amphenol

Tax

Diluted

Income

  ​ ​

Margin (1)

  ​ ​ ​

Corporation

  ​ ​

Rate (1)

  

EPS

  ​ ​

Income

  ​ ​

Margin (1)

  ​ ​ ​

Corporation

  ​ ​

Rate (1)

  

EPS

Reported (GAAP)

$

1,831.8

  ​

24.0

%

$

933.0

  ​

42.7

%

$

0.72

$

1,024.8

  ​

21.3

%

$

737.8

  ​

22.7

%

$

0.58

Amortization of acquisition-related inventory step-up costs

132.0

1.7

101.1

(0.3)

0.08

60.9

1.3

46.6

(0.1)

0.04

Acquisition-related expenses

116.9

1.5

99.5

(0.9)

0.08

44.0

0.9

35.5

(0.2)

0.02

Excess tax benefits related to stock-based compensation

(50.9)

3.1

(0.04)

(20.1)

2.1

(0.02)

Discrete tax items

290.0

(17.6)

0.22

Adjusted (non-GAAP) (2)

$

2,080.7

27.3

%

$

1,372.7

27.0

%

$

1.06

$

1,129.7

23.5

%

$

799.8

24.5

%

$

0.63

(1)While the terms “operating margin” and “effective tax rate” are not considered U.S. GAAP financial measures, for purposes of this table, we derive the reported (GAAP) measures based on GAAP results, which serve as the basis for the reconciliation to their comparable non-GAAP financial measures.
(2)All percentages and per share amounts in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

Liquidity and Capital Resources

Liquidity and Cash Requirements

As of March 31, 2026 and December 31, 2025, the Company had cash, cash equivalents and short-term investments of $4,583.1 and $11,434.2, respectively. As of March 31, 2026, the majority of the Company’s cash, cash equivalents and short-term investments on hand was located outside of the United States. However, as of December 31, 2025, more than half of the Company’s cash, cash equivalents, and short-term investments on hand was located in the United States, primarily as a result of the proceeds from the issuance of the November Senior Notes, which were subsequently used to fund the CommScope acquisition.

The Company’s primary sources of liquidity are internally generated cash provided by operating activities, cash, cash equivalents and short-term investments on hand, as well as availability under the Commercial Paper Programs and the Revolving Credit Facility (both as defined below). The Company believes that these sources of liquidity, along with access to capital markets (which the Company accessed in the first quarter of 2026 in connection with the issuance of the 2031 Euro Notes and the drawing of the Delayed Draw Term Loans), provide adequate liquidity to meet both its short-term (next 12 months) and reasonably foreseeable long-term requirements and obligations. The Company’s debt instruments are defined and discussed in more detail below within this Item 2.

Cash Requirements from Known Contractual and Other Obligations

The Company’s primary ongoing cash requirements will be for operating and working capital needs, capital expenditures, product development activities, repurchases of our Common Stock, dividends, debt service, taxes due upon the repatriation of foreign earnings (which will be payable upon the repatriation of such earnings), funding of pension obligations, funding of acquisitions, and other contractual obligations and commitments included in Item 7 of the 2025 Annual Report. The Company has funded all of its recent acquisitions entirely with a combination of cash on hand and net proceeds from its debt instruments, including the CommScope acquisition, and may fund future acquisitions all or in part with cash. The Company’s debt service requirements primarily consist of principal and interest on the Company’s Senior Notes and Delayed Draw Term Loans, and to the extent of any amounts outstanding, the Revolving Credit Facility and Commercial Paper Programs. As of March 31, 2026 and December 31, 2025, the Company had no borrowings outstanding under the Revolving Credit Facility and Commercial Paper Programs. However, the Company

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borrowed under the U.S. Commercial Paper Program during the first quarter of 2026 from time to time, the proceeds of which were used for general corporate purposes. Although all such borrowings were repaid before the end of the first quarter of 2026, the Company may make additional borrowings under the Revolving Credit Facility and the Commercial Paper Programs in the future. As of March 31, 2026, the Company had $1,534.1 outstanding under each of the Delayed Draw Term Loans. As of December 31, 2025, the Company had no borrowings outstanding under either Delayed Draw Term Loan. To the extent that interest rates change related to floating interest rate debt and the Company has outstanding borrowings under any of our floating rate debt instruments (Commercial Paper Programs, Revolving Credit Facility and the Delayed Draw Term Loans), our interest expense and interest payments will be impacted accordingly. Although the Company does not expect changes in interest rates to have a material effect on net income or cash flows for the remainder of 2026, there can be no assurance that interest rates will not change significantly from current levels.

In connection with the previously disclosed tax matter in China, the Company received unfavorable determinations from the relevant tax authorities regarding certain of the Company’s prior period tax positions. As a result of these unfavorable determinations, the Company received tax payment notices totaling $230.0. To fully accrue for this amount, the Company recorded an accrual of $130.0 during the three months ended March 31, 2026, which was in addition to the accrual of $100.0 recorded in the three months ended December 31, 2025. In addition, the recent developments of the above tax matter also resulted in the Company reassessing certain tax rate assumptions applied to prior years’ results not subject to the China tax inquiries. This reassessment resulted in the Company recording $160.0 of additional tax obligations in the three months ended March 31, 2026.

Repatriation of Foreign Earnings and Related Income Taxes

The Company has previously indicated an intention to repatriate most of its pre-2026 accumulated earnings and has accrued the foreign and U.S. state and local taxes, if applicable, on those earnings, as appropriate. The associated tax payments are due as the repatriations are made. The Company intends to indefinitely reinvest the remaining pre-2026 foreign earnings. As of March 31, 2026, the Company has accrued the foreign and U.S. state and local taxes associated with the foreign earnings that it intends to repatriate. The Company intends to evaluate future earnings for repatriation, and will accrue for those distributions where appropriate, and to indefinitely reinvest all other foreign earnings.

H.R. 1

On July 4, 2025, the United States federal government enacted the tax and spending bill H.R. 1. This legislation contains changes to previously enacted provisions of the Internal Revenue Code and provides for extensions of certain expiring tax provisions included in the Tax Cuts and Jobs Act.  Certain corporate tax provisions in H.R. 1 were enacted with retroactive effect to January 1, 2025.  H.R. 1 did not have a material impact on our effective tax rate for the three months ended March 31, 2026.  The Company continues to evaluate the corporate tax provisions contained within H.R. 1, and the future impact of H.R. 1 depends on several factors, including interpretive regulatory guidance, which has not yet been released.

Cash Flow Summary

The following table summarizes the Company’s cash flows from operating, investing and financing activities for the three months ended March 31, 2026 and 2025, as reflected in the Condensed Consolidated Statements of Cash Flow:

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​

2025

Net cash provided by operating activities

$

1,121.5

$

764.9

Net cash used in investing activities

 

(11,030.8)

 

(2,352.6)

Net cash provided by (used in) financing activities

 

2,898.3

 

(88.6)

Effect of exchange rate changes on cash and cash equivalents

 

8.4

 

16.5

Net decrease in cash and cash equivalents

$

(7,002.6)

$

(1,659.8)

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Operating Activities

The ability to generate cash from operating activities is one of the Company’s fundamental financial strengths. Net cash provided by operating activities (“Operating Cash Flow”) was $1,121.5 in the first three months of 2026 compared to $764.9 in the first three months of 2025. The increase in Operating Cash Flow for the first three months of 2026 compared to the first three months of 2025 is primarily due to the increase in net income and the non-cash addback of depreciation and amortization, partially offset by a higher usage of cash related to the change in working capital.

In the first three months of 2026, the components of working capital as presented on the accompanying Condensed Consolidated Statements of Cash Flow increased $499.8, excluding the impact of acquisitions and foreign currency translation, primarily due to increases in accounts receivable of $445.5, inventories of $156.0, and prepaid expenses and other current assets of $72.7, partially offset by an increase in accounts payable of $107.4 and an increase in accrued liabilities, including income taxes, of $67.0. In the first three months of 2025, the components of working capital as presented on the accompanying Condensed Consolidated Statements of Cash Flow increased $271.3, excluding the impact of acquisitions and foreign currency translation, primarily due to increases in accounts receivable of $333.5, inventories of $117.2 and prepaid expenses and other current assets of $110.9, partially offset by increases in accounts payable of $167.7 and accrued liabilities, including income taxes, of $100.3.

The following describes the significant changes in the amounts as presented on the accompanying Condensed Consolidated Balance Sheets at March 31, 2026 as compared to December 31, 2025. Accounts receivable increased $1,155.8 to $5,872.9, primarily due to the higher sales in the first quarter of 2026 relative to the fourth quarter of 2025, along with the impact of the CommScope acquisition that closed during the first quarter of 2026 and the effect of translation from exchange rate changes (“Translation”) at March 31, 2026 compared to December 31, 2025. Days sales outstanding at March 31, 2026 and December 31, 2025 were 68 days and 66 days, respectively. Inventories increased $661.9 to $4,086.8, primarily due to the impact of the CommScope acquisition and Translation. Inventory days at March 31, 2026 and December 31, 2025 were 78 days and 77 days, respectively. Prepaid expenses and other current assets increased $149.9 to $840.9, primarily due to increases in various prepaid expenses and other current receivables, along with the impact of the CommScope acquisition and Translation. Property, plant and equipment, net, increased $383.0 to $2,688.6, primarily due to capital expenditures of $291.6, the impact of the CommScope acquisition and Translation, partially offset by depreciation of $200.6. Goodwill increased $6,967.5 to $17,542.9, primarily driven by goodwill recognized from the CommScope acquisition, partially offset by Translation. Other intangible assets, net, increased $3,159.7 to $5,401.1, primarily due to the recognition of certain intangible assets related to the CommScope acquisition, partially offset by the amortization associated with the Company’s current intangible assets and Translation. Other long-term assets increased $270.2 to $1,117.5, primarily due to an increase in operating lease right-of-use assets resulting from new and renewed lease agreements entered into during the first quarter of 2026 as well as acquired leases resulting from the CommScope acquisition and Translation. Accounts payable increased $519.6 to $3,181.5, primarily due to increased purchasing activity related to the higher sales levels in the first quarter of 2026 relative to the fourth quarter of 2025, along with the impact of the CommScope acquisition and Translation. Payable days at March 31, 2026 and December 31, 2025 were 61 days and 60 days, respectively. Total accrued expenses, including accrued income taxes, increased $479.9 to $3,683.6, primarily as a result of increases in accrued interest, accrued income taxes and various other accrued expenses, along with the impact of the CommScope acquisition and Translation, partially offset by a decrease in accrued salaries, wages and employee benefits. Other long-term liabilities, including deferred tax liabilities, increased $1,053.3 to $2,274.7, primarily due to an increase in long-term deferred income taxes largely as a result of the CommScope acquisition, an increase in lease liabilities resulting from new and renewed lease agreements entered into during the first three months of 2026 as well as acquired leases resulting from the CommScope acquisition, and increases in various other long-term liabilities and Translation.

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In addition to Operating Cash Flow, the Company also considers Free Cash Flow, a non-GAAP financial measure defined in the “Non-GAAP Financial Measures” section below, as a key metric in measuring the Company’s ability to generate cash. The following table reconciles Free Cash Flow to its most directly comparable U.S. GAAP financial measure for the three months ended March 31, 2026 and 2025.

Three Months Ended March 31, 

  ​ ​ ​

2026

  ​ ​ ​ ​ ​ ​ ​

2025

Operating Cash Flow (GAAP)

 

$

1,121.5

 

$

764.9

Capital expenditures (GAAP)

(291.6)

(188.6)

Proceeds from disposals of property, plant and equipment (GAAP)

 

1.3

 

4.1

Free Cash Flow (non-GAAP)

$

831.2

$

580.4

Investing Activities

Cash flows from investing activities primarily consist of cash flows associated with capital expenditures, proceeds from disposals of property, plant and equipment, net, purchases (sales and maturities) of short- and long-term investments, and acquisitions.

Net cash used in investing activities was $11,030.8 in the first three months of 2026, compared to $2,352.6 in the first three months of 2025. In the first three months of 2026, net cash used in investing activities was primarily driven by the use of $10,592.9 to fund the CommScope acquisition, capital expenditures (net of disposals) of $290.3 and net purchases of short-term investments of $148.7. In the first three months of 2025, net cash used in investing activities was primarily driven by the use of $2,172.2 to fund acquisitions and capital expenditures (net of disposals) of $184.5, partially offset by net sales and maturities of short-term investments of $4.1.

Financing Activities

Cash flows from financing activities primarily consist of cash flows associated with borrowings and repayments of the Company’s credit facilities and other long-term debt, repurchases of Common Stock, proceeds from stock option exercises, dividend payments, and distributions to and purchases of noncontrolling interests.

Net cash provided by financing activities was $2,898.3 in the first three months of 2026, compared to net cash used in financing activities of $88.6 in the first three months of 2025. In the first three months of 2026, net cash provided by financing activities was primarily driven by (i) net cash proceeds from borrowings of $3,645.1, primarily related to the borrowings under the Delayed Draw Term Loans and the issuance of the 2031 Euro Notes (defined below), and (ii) cash proceeds of $95.9 from the exercise of stock options, partially offset by (a) redemption of the 4.750% Senior Notes of $350.0, (b) dividend payments of $306.7, and (c) repurchases of the Company’s Common Stock of $178.0. In the first three months of 2025, net cash used in financing activities was primarily driven by (i) redemption of the 2.050% Senior Notes of $400.0, (ii) dividend payments of $199.5, and (iii) repurchases of the Company’s Common Stock of $180.9, partially offset by (a) borrowings under the U.S. Commercial Paper Program of $639.8, and (b) cash proceeds of $53.2 from the exercise of stock options.

The Company has significant flexibility to meet its financial commitments. The Company uses debt financing to lower the overall cost of capital and increase return on stockholders’ equity. The Company’s debt financing includes the use of the Commercial Paper Programs, the Revolving Credit Facility, the Delayed Draw Term Loans and senior notes as part of its overall cash management strategy.

The Company has an amended and restated $3,000.0 unsecured revolving credit facility (the “Revolving Credit Facility”). The Revolving Credit Facility matures in March 2029 and gives the Company and certain of its subsidiaries the ability to borrow, in various currencies, at a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates, in the case of U.S. dollar borrowings, are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). The Company may utilize the Revolving Credit

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Facility for general corporate purposes. As of March 31, 2026 and December 31, 2025, there were no outstanding borrowings under the Revolving Credit Facility. The Revolving Credit Facility requires payment of certain annual agency and commitment fees and requires that the Company satisfy certain financial covenants. On March 31, 2026, the Company was in compliance with the financial covenants under the Revolving Credit Facility.

On August 22, 2025, the Company entered into (i) a three-year, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions, and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “Three-Year Delayed Draw Term Loan”), which is scheduled to mature on the three-year anniversary of the funding date, and (ii) a 364-day, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “364-Day Delayed Draw Term Loan” and, together with the Three-Year Delayed Draw Term Loan, the “Delayed Draw Term Loans” and individually, a “Delayed Draw Term Loan”), which is scheduled to mature on the date that is 364 days after the funding date. Each Delayed Draw Term Loan may only be drawn in a single drawing over the life of the applicable facility. Each Delayed Draw Term Loan may be repaid at any time without premium or penalty and, once repaid, cannot be reborrowed. Interest rates under each Delayed Draw Term Loan are based on a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. On November 13, 2025, the aggregate commitment amount in respect of each of the Delayed Draw Term Loans was individually reduced to $1,534.1. On January 9, 2026, the Company drew the full $1,534.1 available under each of the Delayed Draw Term Loans to fund a portion of the consideration for the CommScope acquisition. On March 31, 2026, the Company was in compliance with the financial covenants under each Delayed Draw Term Loan.

The Company has a commercial paper program (the “U.S. Commercial Paper Program”) pursuant to which the Company may issue short-term unsecured commercial paper notes (the “USCP Notes” or “U.S. Commercial Paper”) in one or more private placements in the United States. As of March 31, 2026, the maximum aggregate principal amount outstanding of USCP Notes at any time is $3,000.0. The Company utilizes borrowings under the U.S. Commercial Paper Program for general corporate purposes, which, in recent years, have included fully or partially funding acquisitions, as well as repaying certain outstanding senior notes. The Company borrowed under the U.S. Commercial Paper Program throughout much of the first quarter of 2026, the proceeds of which were used for general corporate purposes. Before the end of the first quarter of 2026, the Company repaid all of its USCP Notes outstanding using cash on hand. As of March 31, 2026 and December 31, 2025, there were no USCP Notes outstanding.

The Company and one of its wholly owned European subsidiaries (the “Euro Issuer”) also have a commercial paper program (the “Euro Commercial Paper Program” and, together with the U.S. Commercial Paper Program, the “Commercial Paper Programs”), pursuant to which the Euro Issuer may issue short-term unsecured commercial paper notes (the “ECP Notes” and, together with the USCP Notes, the “Commercial Paper”), which are guaranteed by the Company and are to be issued outside of the United States.  The ECP Notes may be issued in Euros, Sterling, U.S. dollars or other currencies. The maximum aggregate principal amount outstanding of ECP Notes at any time is $2,000.0. The Company utilizes borrowings under the Euro Commercial Paper Program for general corporate purposes, which may include, for example, fully or partially funding acquisitions. The Company did not borrow under the Euro Commercial Paper Program during the first quarter of 2026, and, as of March 31, 2026 and December 31, 2025, there were no ECP Notes outstanding.

Amounts available under the Commercial Paper Programs may be borrowed, repaid and re-borrowed from time to time. In conjunction with the Revolving Credit Facility, as of March 31, 2026, the authorization from the Board limits the maximum aggregate principal amount outstanding of USCP Notes, ECP Notes, and any other commercial paper or similar programs, along with outstanding amounts under the Revolving Credit Facility, at any time to $3,000.0 in the aggregate. The Commercial Paper Programs are rated A-2 by Standard & Poor’s and P-2 by Moody’s and, based on the Board’s authorization described above, are currently backstopped by the Revolving Credit Facility, as amounts undrawn under the Revolving Credit Facility are available to repay Commercial Paper, if necessary. The Company reviews its optimal mix of short-term and long-term debt regularly and may replace certain amounts of Commercial Paper, short-term debt and current maturities of long-term debt with new issuances of long-term debt in the future.

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As of March 31, 2026, the Company has outstanding senior notes (the “Senior Notes”) as follows:

Principal

  ​

Interest

  ​

Amount

  ​

Rate

Maturity

U.S. Senior Notes

$

700.0

5.050

April 2027

500.0

Compounded SOFR plus 0.53

November 2027

750.0

3.800

November 2027

750.0

4.375

June 2028

750.0

3.900

November 2028

450.0

5.050

April 2029

500.0

  ​

4.350

June 2029

900.0

  ​

2.800

February 2030

1,000.0

4.125

November 2030

750.0

2.200

September 2031

1,250.0

4.400

February 2033

600.0

5.250

April 2034

750.0

5.000

January 2035

1,600.0

4.625

February 2036

500.0

5.375

November 2054

1,650.0

5.300

November 2055

Euro Senior Notes

500.0

0.750

May 2026 (Euro Notes)

500.0

  ​

2.000

October 2028 (Euro Notes)

500.0

3.625

March 2031 (Euro Notes)

600.0

  ​

3.125

June 2032 (Euro Notes)

U.S. Senior Notes

On March 30, 2026, the Company used cash on hand to repay the $350.0 aggregate principal amount of unsecured 4.750% Senior Notes due March 30, 2026 upon maturity.

On March 3, 2025, the Company used a combination of cash on hand and borrowings under the U.S. Commercial Paper Program to repay the $400.0 aggregate principal amount of unsecured 2.050% Senior Notes due March 1, 2025 upon maturity.

On June 12, 2025, the Company issued $750.0 aggregate principal amount of unsecured 4.375% Senior Notes due June 12, 2028 (the “2028 Senior Notes”). The Company used net proceeds from the 2028 Senior Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

On November 10, 2025, the Company issued (i) $500.0 aggregate principal amount of unsecured Floating Rate Senior Notes due November 15, 2027 (the “Floating Rate Senior Notes”), (ii) $750.0 aggregate principal amount of unsecured 3.800% Senior Notes due November 15, 2027 (the “3.800% Senior Notes”), (iii) $750.0 aggregate principal amount of unsecured 3.900% Senior Notes due November 15, 2028 (the “3.900% Senior Notes”), (iv) $1,000.0 aggregate principal amount of unsecured 4.125% Senior Notes due November 15, 2030 (the “4.125% Senior Notes”), (v) $1,250.0 aggregate principal amount of unsecured 4.400% Senior Notes due February 15, 2033 (the “4.400% Senior Notes”), (vi) $1,600.0 aggregate principal amount of unsecured 4.625% Senior Notes due February 15, 2036 (the “4.625% Senior Notes”) and (vii) $1,650.0 aggregate principal amount of unsecured 5.300% Senior Notes due November 15, 2055 (the “5.300% Senior Notes” and, together with the Floating Rate Senior Notes, the 3.800% Senior Notes, the 3.900% Senior Notes, the 4.125% Senior Notes, the 4.400% Senior Notes and the 4.625% Senior Notes, the “November Senior Notes”).

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On January 9, 2026, the Company used the net proceeds from the November Senior Notes, together with borrowings under the Delayed Draw Term Loans and cash on hand, to fund the cash consideration for the CommScope acquisition, along with fees and expenses related thereto, as discussed further in Note 11 of the Notes to Condensed Consolidated Financial Statements.

All of the Company’s outstanding senior notes in the United States (the “U.S. Senior Notes”) are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes. Interest on each series of U.S. Senior Notes is payable semiannually, except for the Floating Rate Senior Notes for which interest is payable quarterly. The Company may, at its option, redeem some or all of any series of U.S. Senior Notes at any time, subject to certain terms and conditions, except that the Company may not redeem the Floating Rate Senior Notes at its option prior to their maturity.

Euro Senior Notes

On March 30, 2026, the Euro Issuer issued €500.0 (approximately $586.7 at date of issuance) aggregate principal amount of unsecured 3.625% Senior Notes due March 30, 2031 (the “2031 Euro Notes”). The 2031 Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s other unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes and the 2032 Euro Notes. Interest on the 2031 Euro Notes is payable annually on March 30 of each year, commencing on March 30, 2027. The Company intends to use the proceeds to repay the 0.750% Euro Senior Notes due May 4, 2026 at maturity and for general corporate purposes.

On June 16, 2025, the Company issued €600.0 (approximately $685.9 at date of issuance) aggregate principal amount of unsecured 3.125% Senior Notes due June 16, 2032 (the “2032 Euro Notes”). The 2032 Euro Notes are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes and the 2031 Euro Notes. Interest on the 2032 Euro Notes is payable annually on June 16 of each year, commencing on June 16, 2026. The Company may, at its option, redeem some or all of the 2032 Euro Notes at any time, subject to certain terms and conditions. The Company used net proceeds from the 2032 Euro Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

The Euro Issuer has two additional outstanding unsecured senior notes issued in Europe (the “Existing Euro Notes”, together with the 2031 Euro Notes and the 2032 Euro Notes, the “Euro Notes” and, the Euro Notes together with the U.S. Senior Notes, the “Senior Notes”), each of which was issued with an aggregate principal amount of €500.0, with one series of the Existing Euro Notes maturing in May 2026 and the other in October 2028. The Existing Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s senior unsecured and unsubordinated indebtedness and are fully and unconditionally guaranteed on a senior unsecured basis by the Company. Interest on each series of Existing Euro Notes is payable annually. The Company may, at its option, redeem some or all of either series of Existing Euro Notes at any time, subject to certain terms and conditions.

The Senior Notes impose certain obligations on the Company and prohibit various actions by the Company unless it satisfies certain financial requirements. On March 31, 2026, the Company was in compliance with all requirements under its Senior Notes. Refer to Note 4 of the Notes to Condensed Consolidated Financial Statements for further information related to the Company’s debt.

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On April 23, 2024, the Board authorized a stock repurchase program under which the Company may purchase up to $2,000.0 of its Common Stock during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the three months ended March 31, 2026, the Company repurchased 1.3 million shares of its Common Stock for $178.0 under the 2024 Stock Repurchase Program. All of the repurchased shares under the 2024 Stock Repurchase Program during the three months ended March 31, 2026 were retained in Treasury stock at the time of repurchase. From April 1, 2026 to April 28, 2026, the Company repurchased 0.3 million additional shares of its Common Stock for $44.2, and, as of April 29, 2026, the Company has remaining authorization to purchase up to $648.8 of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

Contingent upon declaration by the Board, the Company pays a quarterly dividend on shares of its Common Stock. On October 21, 2025, the Board approved an increase to the Company’s quarterly dividend rate from $0.165 per share to $0.25 per share, effective with dividends declared in the fourth quarter of 2025, contingent upon declaration by the Board.

The following table summarizes the declared quarterly dividends per share as well as the dividends declared and paid during the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

  ​ ​ ​

2026

2025

Dividends declared per share

$

0.25

$

0.165

Dividends declared

$

307.4

$

199.6

Dividends paid (including those declared in the prior year)

 

306.7

 

199.5

Acquisitions

During the three months ended March 31, 2026, the Company completed the acquisition of CommScope for approximately $10,592.9, net of cash acquired. CommScope has been included in the Communications Solutions segment. The CommScope acquisition was funded through a combination of net proceeds from the November Senior Notes, the Delayed Draw Term Loans and cash on hand.

During the year ended December 31, 2025, the Company completed five acquisitions (collectively, the “2025 Acquisitions”), including the acquisitions of Andrew and Trexon, for approximately $3,818.6, net of cash acquired. The Andrew acquisition has been included in the Communications Solutions segment, three acquisitions, including Trexon, have been included in the Harsh Environment Solutions segment, and one acquisition has been included in the Interconnect and Sensor Systems segment. The 2025 Acquisitions were each funded using cash on hand, proceeds from Senior Notes, borrowings under the U.S. Commercial Paper Program, or a combination thereof. The 2025 Acquisitions were not material, either individually or in the aggregate, to the Company’s financial results.

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Acquisition-related expenses

During the three months ended March 31, 2026, the Company incurred a total of $248.9 ($200.6 after-tax) of acquisition-related expenses, comprised of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the CommScope and Trexon acquisitions and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $116.9 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $132.0 associated with the CommScope acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

During the three months ended March 31, 2025, the Company incurred a total of $104.9 ($82.1 after-tax) of acquisition-related expenses, comprised of (i) the non-cash amortization related to the value associated with the acquired backlog resulting from the Andrew acquisition and external transaction costs associated with acquisitions (such acquisition-related expenses aggregating $44.0 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $60.9 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

Environmental Matters

Certain operations of the Company are subject to environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

Non-GAAP Financial Measures

In addition to assessing the Company’s financial condition, results of operations, liquidity and cash flows in accordance with U.S. GAAP, management utilizes certain non-GAAP financial measures, defined below, as part of its internal reviews for purposes of monitoring, evaluating and forecasting the Company’s financial performance, communicating operating results to the Board and assessing related employee compensation measures. Management believes that these non-GAAP financial measures may be helpful to investors in assessing the Company’s overall financial performance, trends and period-over-period comparative results, in addition to the reasons noted below. Non-GAAP financial measures related to operating income, operating margin, net income attributable to Amphenol Corporation, effective tax rate and diluted EPS exclude income and expenses that are not directly related to the Company’s operating performance during the periods presented. Items excluded in the presentation of such non-GAAP financial measures in any period may consist of, without limitation, acquisition-related expenses, refinancing-related costs, the excess tax benefits related to stock-based compensation and certain other discrete tax items including, but not limited to, (i) the impact of tax audits relating to prior periods and (ii) significant changes in tax law. Non-GAAP financial measures related to net sales exclude the impact of foreign currency exchange rates and acquisitions. The non-GAAP financial information contained herein is included for supplemental purposes only and should not be considered in isolation or as a substitute for or superior to the related U.S. GAAP financial measures. In addition, these non-GAAP financial measures are not necessarily the same or comparable to similar measures presented by other companies as such measures may be calculated differently or may exclude different items.

The non-GAAP financial measures defined below should be read in conjunction with the Company’s financial statements presented in accordance with U.S. GAAP. The reconciliations of these non-GAAP financial measures to the most directly comparable U.S. GAAP financial measures for the three months ended March 31, 2026 and 2025 are included in “Results of Operations” and “Liquidity and Capital Resources” within this Item 2:

Adjusted Diluted EPS is defined as diluted earnings per share (as reported in accordance with U.S. GAAP), excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the periods presented. Adjusted Diluted EPS is calculated as Adjusted Net

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Income attributable to Amphenol Corporation, as defined below, divided by the weighted average outstanding diluted shares as reported in the Condensed Consolidated Statements of Income.

Adjusted Effective Tax Rate is defined as Provision for income taxes, as reported in the Condensed Consolidated Statements of Income, expressed as a percentage of Income before income taxes, as reported in the Condensed Consolidated Statements of Income, each excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the periods presented.

Adjusted Net Income attributable to Amphenol Corporation is defined as Net income attributable to Amphenol Corporation, as reported in the Condensed Consolidated Statements of Income, excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the periods presented.

Adjusted Operating Income is defined as Operating income, as reported in the Condensed Consolidated Statements of Income, excluding income and expenses that are not directly related to the Company’s operating performance during the periods presented.

Adjusted Operating Margin is defined as Adjusted Operating Income (as defined above) expressed as a percentage of Net sales (as reported in the Condensed Consolidated Statements of Income).

Constant Currency Net Sales Growth is defined as the period-over-period percentage change in net sales growth, excluding the impact of changes in foreign currency exchange rates. The Company’s results are subject to volatility related to foreign currency translation fluctuations. As such, management evaluates the Company’s sales performance based on actual sales growth in U.S. dollars, as well as Organic Net Sales Growth (as defined below) and Constant Currency Net Sales Growth, and believes that such information is useful to investors to assess the underlying sales trends.

Free Cash Flow is defined as (i) Net cash provided by operating activities (“Operating Cash Flow” - as reported in accordance with U.S. GAAP) less (ii) capital expenditures (as reported in accordance with U.S. GAAP), net of proceeds from disposals of property, plant and equipment (as reported in accordance with U.S. GAAP), all of which are derived from the Condensed Consolidated Statements of Cash Flow. Free Cash Flow is an important liquidity measure for the Company, as we believe it is useful for management and investors to assess our ability to generate cash, as well as to assess how much cash can be used to reinvest in the growth of the Company or to return to stockholders through either stock repurchases or dividends.

Organic Net Sales Growth is defined as the period-over-period percentage change in net sales growth resulting from operating volume and pricing changes, and excludes the impact of (i) changes in foreign currency exchange rates (described above), which is outside the control of the Company, and (ii) acquisitions, both of which are taken as a percentage of the respective prior period(s) net sales. The acquisition impact represents the percentage impact on net sales resulting from acquisitions that have not been included in the Company's consolidated results for the full current period(s) and/or prior comparable period(s) presented. Such net sales related to these acquisitions do not reflect the underlying growth of the Company on a comparative basis. Management evaluates the Company’s sales performance based on actual sales growth in U.S. dollars, as well as Constant Currency Net Sales Growth (as defined above) and Organic Net Sales Growth, and believes that such information is useful to investors to assess the underlying sales trends.

Critical Accounting Policies and Estimates

The Company’s disclosures of its critical accounting policies and estimates, which are discussed in Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations of its 2025 Annual Report, have not materially changed since that report was filed.

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Item 3.   Quantitative and Qualitative Disclosures About Market Risk

(amounts in millions)

The Company, in the normal course of doing business, is exposed to a variety of risks, including market risks associated with foreign currency exchange rates and changes in interest rates. The Company does not have any significant concentration with any one counterparty. There has been no material change in the Company’s assessment of its sensitivity to foreign currency exchange rate risk since its presentation set forth in Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk in its 2025 Annual Report. From time to time, the Company may borrow under the Revolving Credit Facility and Commercial Paper Programs. In addition to the outstanding borrowings under the Company’s Euro Notes (as discussed in Note 4 of the Notes to Condensed Consolidated Financial Statements), any borrowings under the Euro Commercial Paper Program and Revolving Credit Facility have been and may continue to be denominated in various foreign currencies, including the Euro, and there can be no assurance that the Company can successfully manage changes in exchange rates, including in the event of a significant and sudden decline in the value of any of the foreign currencies in which such borrowings are made.

The Company manages its exposure to interest rate risk through a mix of fixed and variable rate debt and hedging contracts in some cases. The Company currently has various fixed rate senior notes outstanding, in both the United States and Europe, with various maturity dates, the most recent of which were issued in 2026. In August 2025, the Company entered into $1,500.0 10-year and $1,000.0 30-year notional treasury lock derivative instruments to hedge interest rate risk prior to the issuance of the November Senior Notes. In November 2025, the Company issued the November Senior Notes. The treasury locks were settled upon the issuance of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively, for a cumulative loss of $88.0 ($67.4 after-tax). The cumulative after-tax loss was recorded in Accumulated other comprehensive income (loss) and is being amortized to Interest Expense over the terms of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively. Refer to Note 4 and Note 5 of the accompanying Notes to Condensed Consolidated Financial Statements herein for further discussion related to these debt instruments.

In addition, any borrowings under the Revolving Credit Facility bear interest at rates that fluctuate with a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates in the case of U.S. dollar borrowings are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). Any borrowings under the Commercial Paper Programs are subject to floating interest rates. Borrowings under each Delayed Draw Term Loan bear interest at rates that fluctuate with a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. The Floating Rate Senior Notes bear interest at a floating rate per annum, reset quarterly, equal to compounded SOFR, plus 0.53%. Therefore, when the Company borrows under these debt instruments, the Company is exposed to market risk related to changes in interest rates. As of March 31, 2026 and December 31, 2025, the Company had no borrowings outstanding under the Revolving Credit Facility and Commercial Paper Programs. However, the Company borrowed under the U.S. Commercial Paper Program during the first quarter of 2026 from time to time, the proceeds of which were used for general corporate purposes. As of March 31, 2026, the Company had $1,534.1 outstanding under each Delayed Draw Term Loan. As of December 31, 2025, the Company had no borrowings outstanding under either Delayed Draw Term Loan. The Company may make additional borrowings under the Revolving Credit Facility and the Commercial Paper Programs in the future. To the extent that interest rates change related to floating interest rate debt and the Company has outstanding borrowings under any of our floating rate debt instruments (Commercial Paper Programs, Revolving Credit Facility and Delayed Draw Term Loans), our interest expense and interest payments will be impacted accordingly. Although the Company does not expect changes in interest rates to have a material effect on net income or cash flows for the remainder of 2026, there can be no assurance that interest rates will not change significantly from current levels. In addition, the Company may utilize interest rate derivative instruments to hedge interest rate risk associated with future debt issuances (see Note 5 of the Notes to Condensed Consolidated Financial Statements).

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Item 4.   Controls and Procedures

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) or 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of the end of the period covered by this report. These disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms, and such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Based on their evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective at the reasonable assurance level as of the end of the period covered by this report.

Changes in Internal Control Over Financial Reporting

The Company completed the acquisition of CommScope on January 9, 2026. The Company is in the process of integrating CommScope’s processes and internal control over financial reporting, and it will be completed within the time provided by the applicable rules and regulations of the SEC for a recently acquired business. As such, the scope of our current assessment of internal control over financial reporting does not yet include CommScope.

CommScope accounted for approximately 5% of total assets, excluding the preliminary value of goodwill and purchased intangible assets, and 11% of consolidated net sales as of and for the three months ended March 31, 2026.

There have been no other changes in our internal control over financial reporting during the Company’s most recent fiscal quarter that have materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1.   Legal Proceedings

Information required with respect to legal proceedings in this Part II, Item 1 is incorporated herein by reference and included in Note 15 of the Notes to Condensed Consolidated Financial Statements contained in Part I, Item 1 of this Quarterly Report.

Item 1A.  Risk Factors

There have been no material changes to the Company’s risk factors as disclosed in Part I, Item 1A. Risk Factors in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

Item 2.   Unregistered Sales of Equity Securities and Use of Proceeds

Repurchase of Equity Securities

On April 23, 2024, the Company’s Board of Directors (the “Board”) authorized a stock repurchase program under which the Company may purchase up to $2.0 billion of the Company’s Class A Common Stock (“Common Stock”) during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the three months ended March 31, 2026, the Company repurchased 1.3 million shares of its Common Stock for $178.0 million under the 2024 Stock Repurchase Program. All of the repurchased shares under the 2024 Stock Repurchase Program during the three months ended March 31, 2026 were retained in Treasury stock at the time of repurchase. From April 1, 2026 to April 28, 2026, the Company repurchased 0.3 million additional shares of its Common Stock for $44.2 million, and, as of April 29, 2026, the Company has remaining authorization to purchase up to $648.8 million of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

The table below reflects the Company’s stock repurchases for the three months ended March 31, 2026:

Total Number of

Maximum Dollar

 

(dollars in millions, except price per share)

Shares Purchased as

Value of Shares

 

Total Number

Average

Part of Publicly

that May Yet be

 

of Shares

Price Paid

Announced Plans or

Purchased Under the

 

Period

  ​ ​ ​

Purchased

  ​ ​ ​

per Share

  ​ ​ ​

Programs

  ​ ​ ​

Plans or Programs

 

January 1 to January 31, 2026

 

302,262

 

$

146.17

 

302,262

 

$

826.9

February 1 to February 28, 2026

 

450,472

 

143.43

 

450,472

 

 

762.3

March 1 to March 31, 2026

 

521,800

 

132.68

 

521,800

 

$

693.1

Total

 

1,274,534

 

$

139.68

 

1,274,534

 

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Item 3.   Defaults Upon Senior Securities

None.

Item 4.   Mine Safety Disclosures

Not Applicable.

Item 5.   Other Information

Trading Arrangements

During the three months ended March 31, 2026, no director or officer of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.

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Item 6.   Exhibits

3.1

Restated Certificate of Incorporation of Amphenol Corporation, dated May 19, 2021 (filed as Exhibit 3.1 to the June 30, 2021 Form 10-Q).*

3.2

Certificate of Amendment to the Restated Certificate of Incorporation of Amphenol Corporation, dated May 16, 2024 (filed as Exhibit 3.1 to the Form 8-K filed on May 16, 2024).*

3.3

Certificate of Amendment to the Restated Certificate of Incorporation of Amphenol Corporation, dated May 15, 2025 (filed as Exhibit 3.1 to the Form 8-K filed on May 16, 2025).*

3.4

Amphenol Corporation, Fifth Amended and Restated By-laws dated August 3, 2023 (filed as Exhibit 3.1 to the Form 8-K filed on August 4, 2023).*

4.1

Indenture, dated as of November 5, 2009, between Amphenol Corporation and The Bank of New York Mellon, as trustee (filed as Exhibit 4.1 to the Form 8-K filed on November 5, 2009).*

4.2

Indenture, dated as of October 8, 2018, among Amphenol Technologies Holding GmbH, Amphenol Corporation and The Bank of New York Mellon, as trustee (filed as Exhibit 4.1 to the Form 8-K filed on October 9, 2018).*

4.3

Indenture, dated as of May 4, 2020, among Amphenol Technologies Holding GmbH, Amphenol Corporation and The Bank of New York Mellon, as trustee (filed as Exhibit 4.1 to the Form 8-K filed on May 5, 2020).*

4.4

Indenture, dated as of March 16, 2023, among Amphenol Corporation and U.S. Bank Trust Company, National Association, as trustee (filed as Exhibit 4.1 to the Company’s Registration Statement on Form S-3 filed on March 16, 2023).*

4.5

Indenture, dated as of March 30, 2026, among Amphenol Technologies Holding GmbH, Amphenol Corporation, and U.S. Bank Trust Company, National Association, as trustee (filed as Exhibit 4.1 to the Form 8-K filed on March 30, 2026).*

4.6

Officer’s Certificate, dated January 9, 2019, establishing the 4.350% Senior Notes due 2029 pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on January 10, 2019).*

4.7

Officer’s Certificate, dated September 10, 2019, establishing the 2.800% Senior Notes due 2030 pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on September 10, 2019).*

4.8

Officer’s Certificate, dated September 14, 2021, establishing the 2.200% Senior Notes due 2031 pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on September 14, 2021).*

4.9

Officer’s Certificate, dated March 30, 2023, establishing the 4.750% Senior Notes due 2026 pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on March 30, 2023).*

4.10

Officer’s Certificate, dated April 5, 2024, establishing the 5.050% Senior Notes due 2027, 5.050% Senior Notes due 2029, and 5.250% Senior Notes due 2034, pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on April 5, 2024).*

4.11

Officer’s Certificate, dated October 31, 2024, establishing the 5.000% Senior Notes due 2035 and 5.375% Senior Notes due 2054, pursuant to the Indenture (filed as Exhibit 4.3 to the Form 8-K filed on October 31, 2024).*

4.12

Officers’ Certificate, dated June 12, 2025, establishing the 4.375% Senior Notes due 2028, pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on June 12, 2025).*

4.13

Officers’ Certificate, dated June 16, 2025, establishing the 3.125% Senior Notes due 2032, pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on June 16, 2025).*

4.14

Officers’ Certificate, dated November 10, 2025, establishing the Floating Rate Senior Notes due 2027, 3.800% Senior Notes due 2027, 3.900% Senior Notes due 2028, 4.125% Senior Notes due 2030, 4.400% Senior Notes due 2033, 4.625% Senior Notes due 2036 and 5.300% Senior Notes due 2055, pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on November 10, 2025).*

4.15

Officers’ Certificate, dated March 30, 2026, establishing the 3.625% Senior Notes due 2031, pursuant to the Indenture (filed as Exhibit 4.2 to the Form 8-K filed on March 30, 2026).*

4.16

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 (filed as Exhibit 4.14 to the December 31, 2025 Form 10-K).*

10.1

Amended and Restated 2017 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (filed as Annex A to the Company’s Definitive Proxy Statement on Schedule 14A for its 2021 Annual Meeting of Stockholders, filed on April 12, 2021).†*

10.2

Form of 2017 Stock Option Agreement (filed as Exhibit 10.1 to the Form 8-K filed on May 19, 2017).†*

10.3

2009 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (filed as Exhibit 10.7 to the June 30, 2009 Form 10-Q).†*

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10.4

The First Amendment to the 2009 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (filed as Exhibit 10.2 to the Form 8-K filed on May 23, 2014).†*

10.5

Form of 2009 Non-Qualified Stock Option Grant Agreement dated as of May 20, 2009 (filed as Exhibit 10.8 to the June 30, 2009 Form 10-Q).†*

10.6

Form of 2009 Management Stockholders’ Agreement dated as of May 20, 2009 (filed as Exhibit 10.9 to the June 30, 2009 Form 10-Q).†*

10.7

Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016 (filed as Exhibit 10.6 to the December 31, 2016 Form 10-K).†*

10.8

First Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated November 10, 2016 (filed as Exhibit 10.7 to the December 31, 2016 Form 10-K).†*

10.9

Second Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated October 1, 2016 (filed as Exhibit 10.8 to the December 31, 2016 Form 10-K).†*

10.10

Third Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 13, 2016 (filed as Exhibit 10.9 to the December 31, 2016 Form 10-K).†*

10.11

Fourth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated May 2, 2017 (filed as Exhibit 10.12 to the June 30, 2017 Form 10-Q).†*

10.12

Fifth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated October 29, 2018 (filed as Exhibit 10.12 to the December 31, 2018 Form 10-K).†*

10.13

Sixth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated October 4, 2019 (filed as Exhibit 10.13 to the December 31, 2019 Form 10-K).†*

10.14

Seventh Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 2, 2019 (filed as Exhibit 10.14 to the December 31, 2019 Form 10-K).†*

10.15

Eighth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 9, 2021 (filed as Exhibit 10.15 to the December 31, 2021 Form 10-K).†*

10.16

Ninth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 1, 2022 (filed as Exhibit 10.16 to the December 31, 2022 Form 10-K).†*

10.17

Tenth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated August 28, 2023 (filed as Exhibit 10.17 to the September 30, 2023 Form 10-Q).†*

10.18

Eleventh Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 19, 2024 (filed as Exhibit 10.18 to the December 31, 2024 Form 10-K).†*

10.19

Twelfth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 19, 2024 (filed as Exhibit 10.19 to the December 31, 2024 Form 10-K).†*

10.20

Thirteenth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 22, 2025 (filed as Exhibit 10.20 to the December 31, 2025 Form 10-K).†*

10.21

Fourteenth Amendment to Pension Plan for Employees of Amphenol Corporation, as amended and restated effective January 1, 2016, dated December 22, 2025 (filed as Exhibit 10.21 to the December 31, 2025 Form 10-K).†*

10.22

Amended and Restated Amphenol Corporation Supplemental Employee Retirement Plan (filed as Exhibit 10.24 to the December 31, 2008 Form 10-K).†*

10.23

First Amendment to the Amended and Restated Amphenol Corporation Supplemental Employee Retirement Plan, dated October 29, 2018 (filed as Exhibit 10.14 to the December 31, 2018 Form 10-K).†*

10.24

The 2024 Restricted Stock Plan for Directors of Amphenol Corporation (filed as Annex A to the Company’s Definitive Proxy Statement on Schedule 14A for its 2024 Annual Meeting of Stockholders, filed on April 8, 2024).†*

10.25

2024 Restricted Stock Plan for Directors of Amphenol Corporation Restricted Share Award Agreement (filed as Exhibit A of Annex A to the Company’s Definitive Proxy Statement on Schedule 14A for its 2024 Annual Meeting of Stockholders, filed on April 8, 2024).†*

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10.26

2026 Amphenol Corporation Management Incentive Plan (filed as Exhibit 10.25 to the December 31, 2025 Form 10-K).†*

10.27

Third Amended and Restated Credit Agreement, dated March 21, 2024, among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (filed as Exhibit 10.1 to the Form 8-K filed on March 22, 2024).*

10.28

The Amphenol Corporation Employee Savings/401(K) Plan Adoption Agreement, as amended and restated effective April 5, 2022, dated April 18, 2022 (filed as Exhibit 10.23 to the June 30, 2022 Form 10-Q).†*

10.29

Amendment to The Amphenol Corporation Employee Savings/401(K) Plan Adoption Agreement, effective January 1, 2023, dated December 19, 2022 (filed as Exhibit 10.25 to the December 31, 2022 Form 10-K).†*

10.30

Amendment to The Amphenol Corporation Employee Savings/401(K) Plan Adoption Agreement, effective January 1, 2024, dated November 30, 2023 (filed as Exhibit 10.28 to the December 31, 2023 Form 10-K).†*

10.31

Amendment to The Amphenol Corporation Employee Savings/401(K) Plan Adoption Agreement, effective January 1, 2025, dated November 21, 2024 (filed as Exhibit 10.29 to the December 31, 2024 Form 10-K).†*

10.32

Amendment to The Amphenol Corporation Employee Savings/401(K) Plan Adoption Agreement, effective January 1, 2026, dated December 23, 2025 (filed as Exhibit 10.32 to the December 31, 2025 Form 10-K).†*

10.33

Amended and Restated Amphenol Corporation Supplemental Defined Contribution Plan (filed as Exhibit 10.30 to the September 30, 2011 Form 10-Q).†*

10.34

Amphenol Corporation Supplemental Defined Contribution Plan, as amended effective January 1, 2012 (filed as Exhibit 10.34 to the December 31, 2011 Form 10-K).†*

10.35

Amphenol Corporation Supplemental Defined Contribution Plan, as amended effective January 1, 2019 (filed as Exhibit 10.28 to the December 31, 2018 Form 10-K).†*

10.36

Commercial Paper Program form of Dealer Agreement dated as of August 29, 2014 among the Company, Citibank Global Markets and JP Morgan Securities LLC (filed as Exhibit 10.1 to the Form 8-K filed on September 5, 2014).*

10.37

Commercial Paper Program Dealer Agreement dated as of July 10, 2018 among Amphenol Technologies Holding GmbH (as issuer), Amphenol Corporation (as guarantor), Barclays Bank PLC (as Arranger), and Barclays Bank PLC and Commerzbank Aktiengesellschaft (as Original Dealers) (filed as Exhibit 10.1 to the Form 8-K filed on July 11, 2018).*

10.38

Three-Year Term Loan Credit Agreement dated August 22, 2025, among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (filed as Exhibit 10.1 to the Form 8-K filed on August 25, 2025).*˄

10.39

364-Day Term Loan Credit Agreement dated August 22, 2025, among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (filed as Exhibit 10.2 to the Form 8-K filed on August 25, 2025).*˄

10.40

Form of Indemnification Agreement for Directors and Executive Officers (filed as Exhibit 10.27 to the December 31, 2016 Form 10-K).†*

31.1

Certification pursuant to Exchange Act Rules 13a-14 and 15d-14, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.**

31.2

Certification pursuant to Exchange Act Rules 13a-14 and 15d-14, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.**

32.1

Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***

32.2

Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.***

101.INS

Inline XBRL Instance Document – the Instance Document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.**

101.SCH

Inline XBRL Taxonomy Extension Schema Document.**

101.CAL

Inline XBRL Taxonomy Extension Calculation Linkbase Document.**

101.DEF

Inline XBRL Taxonomy Extension Definition Linkbase Document.**

101.LAB

Inline XBRL Taxonomy Extension Label Linkbase Document.**

101.PRE

Inline XBRL Taxonomy Extension Presentation Linkbase Document.**

104

Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document (included in Exhibit 101).**

       Management contract or compensatory plan or arrangement.

*       Incorporated herein by reference as stated.

˄       Certain schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K.

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**     Filed herewith.

***   Furnished herewith.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

AMPHENOL CORPORATION

By:

/s/ Craig A. Lampo

Craig A. Lampo

Executive Vice President and Chief Financial Officer

(Authorized Signatory
and Principal Financial Officer)

Date: May 1, 2026

50