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ON Semiconductor Corporation (ON) SEC Filing (DEFA14A) 2026

Browse all ON Semiconductor Corporation SEC filings, including Annual reports (10-K), Quarterly reports (10-Q), 8-K, proxy statements (DEF 14A), and insider filings (Form 4). Access official documents by filing date, reporting period, and form type. ...more

Last updated: October 8, 2026, 2:59 AM ET
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SEC Filings

Date

2026

SC 13G/A

Updated passive ownership disclosure

Oct 7, 2026 11:47 AM

4

Insider ownership (buying, selling) activity

Oct 2, 2026 05:47 PM

4

Insider ownership (buying, selling) activity

Oct 2, 2026 04:41 PM

RW

Other SEC filing

Oct 2, 2026 06:01 AM

DEFA14A

Additional or supplemental proxy disclosures

Oct 1, 2026 05:11 PM

8-K

Material company events (earnings, M&A, or leadership changes)

Oct 1, 2026 05:10 PM

425

Prospectus and communications related to mergers or business combinations

Sep 16, 2026 04:02 PM

S-4

Share registration related to mergers or acquisitions

Aug 21, 2026 09:53 AM

425

Prospectus and communications related to mergers or business combinations

Aug 13, 2026 06:01 AM

8-K

Material company events (earnings, M&A, or leadership changes)

Aug 13, 2026 06:01 AM

425

Prospectus and communications related to mergers or business combinations

Aug 11, 2026 08:47 PM

10-Q

Quarterly financial results and management updates

Aug 3, 2026 04:56 PM

8-K

Material company events (earnings, M&A, or leadership changes)

Aug 3, 2026 04:54 PM

4

Insider ownership (buying, selling) activity

Jul 2, 2026 06:40 PM

425

Prospectus and communications related to mergers or business combinations

Jun 29, 2026 09:10 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 02:51 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 02:59 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:25 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:29 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:36 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:44 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:47 PM

425

Prospectus and communications related to mergers or business combinations

Jun 26, 2026 04:48 PM

425

Prospectus and communications related to mergers or business combinations

Jun 25, 2026 05:04 PM

8-K

Material company events (earnings, M&A, or leadership changes)

Jun 25, 2026 04:55 PM

425

Prospectus and communications related to mergers or business combinations

Jun 25, 2026 04:59 PM

4

Insider ownership (buying, selling) activity

May 27, 2026 04:38 PM

3

Initial disclosure of insider ownership

May 22, 2026 04:19 PM

8-K

Material company events (earnings, M&A, or leadership changes)

May 18, 2026 04:30 PM

SD

Specialized disclosure report (e.g., conflict minerals)

May 18, 2026 04:32 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:38 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:39 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:43 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:48 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:52 PM

4

Insider ownership (buying, selling) activity

May 18, 2026 04:54 PM

8-K

Material company events (earnings, M&A, or leadership changes)

May 11, 2026 06:37 PM

8-K

Material company events (earnings, M&A, or leadership changes)

May 7, 2026 06:31 AM

8-K

Material company events (earnings, M&A, or leadership changes)

May 6, 2026 07:31 AM

8-K

Material company events (earnings, M&A, or leadership changes)

May 4, 2026 04:10 PM

ON Semiconductor Corporation (Form DEFA14A) 2026

Proxy & Voting / Additional or supplemental proxy disclosures

Oct 1, 2026 05:11 PM

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