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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Oct 1, 2026Reported sale · Form 4SUDHIR GOPALSWAMY, Group President, AMG & ISG · $1.2MOpen the filing ↗
- Oct 1, 2026Notice of sale · Form 144GOPALSWAMY SUDHIR · Officer · $1.2MOpen the filing ↗
- Oct 1, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record2,33115 flagged findings
Reported transactions (Form 4)40since Feb 6, 2026 · and 2 other holdings
Corporate events (8-K)30since Feb 3, 2022
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
ON Semiconductor Corporation is an American semiconductor supplier company, based in Scottsdale, Arizona. Products include power and signal management, logic, discrete, and custom devices for automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications. onsemi runs a network of manufacturing facilities, sales offices and design centers in North America, Europe, and the Asia Pacific regions. Based on its 2016 revenues of $3.907 billion, onsemi ranked among the worldwide top 20 semiconductor sales leaders, and was ranked No. 483 on the 2022 Fortune 500 based on its 2021 sales.
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-12share offering or dilution eventrecentOpen filing ↗“…with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 1.01.…”
+1 more passage from the same document
- “…under the Securities Act pursuant to Section 3(a)(9) thereof. Item 8.01. Other Events. Convertible Note Hedge Transactions In…”
- 2026-05-12capital return (buybacks/dividends)recentOpen filing ↗“…of redemption. The maximum number of shares of Common Stock issuable in connection with the conversion of the Notes is…”
+1 more passage from the same document
- “…the occurrence of a fundamental change (as defined in the Indenture), subject to certain conditions, holders of the Notes may…”
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant…”
- 2026-05-06share offering or dilution eventrecentOpen filing ↗“…not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant…”
- 2026-05-04share offering or dilution eventrecentOpen filing ↗“…scheduled to mature within two months from the time of purchase. Management believes that these financial instruments should not…”
+1 more passage from the same document
- “…of purchase. Management believes that these financial instruments should not subject the Company to increased risks from foreign…”
- 2026-05-04capital return (buybacks/dividends)recentOpen filing ↗“…has been included in the calculation of diluted weighted-average common shares outstanding, if applicable. The dilutive…”
+1 more passage from the same document
- “…shares outstanding, if applicable. The dilutive impact of the warrants has been excluded for the quarters ended April 3, 2026 and…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 2,331)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 7, 26SCHEDULE 13G/A ↗Passive stake · FMR LLC · 8.2% · event on Sep 30, 26 · amendment
- Oct 1, 26Form 144 ↗Notice of proposed sale
- Oct 1, 26DEFA14A ↗Shareholder meeting and votes
- Oct 1, 268-K ↗Current report · Entered a material agreement
- Sep 16, 26Form 425 ↗Merger, acquisition or tender offer
- Aug 21, 26S-4 ↗Merger, acquisition or tender offer
- Aug 13, 26Form 425 ↗Merger, acquisition or tender offer
- Aug 13, 268-K ↗Current report · Other events
- Aug 12, 26Form 425 ↗Merger, acquisition or tender offer
- Aug 3, 268-K ↗Current report · Results
- Aug 3, 2610-Q ↗Quarterly report
- Jul 2, 26Form 4 ↗Insider transaction
- Jun 30, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 26, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 25, 26Form 425 ↗Merger, acquisition or tender offer
- Jun 25, 26Form 425 ↗Merger, acquisition or tender offer
2,331 filings on record, the oldest from Feb 25, 00.
Listing the 25 most recent filings of the 2,331 on record.
1913690
- Oct 1, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Jun 25, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- May 18, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 12, 26Took on a new financial obligation+4 more in the same filing8-K 2.03 ↗
- Mar 11, 26A senior executive left or was appointed8-K 5.02 ↗
- Nov 17, 25Write-down of assets8-K 2.06 ↗
- Nov 5, 25A senior executive left or was appointed8-K 5.02 ↗
- Sep 23, 25Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Mar 18, 25Write-down of assets8-K 2.06 ↗
- Feb 25, 25Restructuring plan with committed costs8-K 2.05 ↗
- Dec 10, 24Entered a material agreement+2 more in the same filing8-K 1.01 ↗
7 senior executive changes2023 – 2024show all 7hide
- Oct 3, 24A senior executive left or was appointed8-K 5.02 ↗
- May 22, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 4, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 26, 24A senior executive left or was appointed8-K/A 5.02 ↗
- Feb 6, 24A senior executive left or was appointed8-K 5.02 ↗
- Sep 14, 23A senior executive left or was appointed8-K 5.02 ↗
- Aug 23, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
6 older filings not shown · The record reaches back to Dec 8, 04.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Sep 19, 22Write-down of assets8-K 2.06 ↗
- Mar 4, 21Restructuring plan with committed costs8-K 2.05 ↗
- Apr 9, 20Restructuring plan with committed costs8-K 2.05 ↗
- Sep 23, 16Restructuring plan with committed costs8-K 2.05 ↗
- Oct 8, 13Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Aug 22, 12Restructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
- Mar 17, 08A debt obligation was accelerated+4 more in the same filing8-K 2.04 ↗
The full record holds 19 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- The Vanguard Group12.7%Dec 31, 25SCHEDULE 13G/A ↗
- FMR LLC8.2%Sep 30, 26SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
- Vanguard Capital Management7.5%Mar 31, 26SCHEDULE 13G ↗
- Vanguard Portfolio Management5.1%Mar 31, 26SCHEDULE 13G ↗
- STATE STREET CORPORATION4.6%Jun 30, 25SCHEDULE 13G ↗1 earlier filing
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Sale intention announced
On Oct 1, GOPALSWAMY SUDHIR filed notice of intent to sell up to $1.2M. It is filed under a scheduled plan (10b5-1), arranged in advance.
A notice is not a sale: it may not go ahead, may happen in part, or at a different price.
After the notice, they sold $1.2M on Oct 1, per their Form 4. That is 100% of the shares announced so far, and the window is still open.
- Oct 1, 26Sell$1.2MSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Apr 24, 26Sell$3.0MTrent ThadExec VP & CFO↗
- Apr 23, 26Sell$2.8MTrent ThadExec VP & CFO↗
- Apr 16, 26Sell$2.4MTrent ThadExec VP & CFO↗
- Mar 13, 26Sell$359KSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Feb 17, 26Sell$329KSIMON KEETONGroup President, PSG↗
- Feb 17, 26Sell$3.2MSIMON KEETONGroup President, PSG↗
- Feb 12, 26Sell$93KTrent ThadExec VP & CFO↗
- Feb 12, 26Sell$161KTrent ThadExec VP & CFO↗
- Feb 12, 26Sell$510KTrent ThadExec VP & CFO↗
- Feb 12, 26Sell$3.5MTrent ThadExec VP & CFO↗
- Feb 12, 26Sell$7KHassane El-KhouryCEO & President↗
There is 1 more transaction in this stretch.
Stock compensation, tax and giftsshow the 27 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Oct 2, 26Compensation$11KPAUL ANTHONY MASCARENAS↗
- Jul 2, 26Compensation$11KPAUL ANTHONY MASCARENAS↗
- May 26, 26Tax$60KSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- May 14, 26Compensationamount n/aPAUL ANTHONY MASCARENAS↗
- May 14, 26Compensationamount n/aBRUCE E KIDDOO↗
- May 14, 26Compensationamount n/aChristine Y Yan↗
- May 14, 26Compensationamount n/aSUSAN K CARTER↗
- May 14, 26Compensationamount n/aGREGORY L WATERS↗
- May 14, 26Compensationamount n/aThomas Deitrich↗
- Apr 3, 26Compensation$10KPAUL ANTHONY MASCARENAS↗
- Feb 21, 26Tax$538KSIMON KEETONGroup President, PSG↗
- Feb 21, 26Tax$718KTrent ThadExec VP & CFO↗
- Feb 21, 26Tax$662KSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Feb 21, 26Tax$2.5MHassane El-KhouryCEO & President↗
- Feb 20, 26Compensationamount n/aSIMON KEETONGroup President, PSG↗
- Feb 20, 26Tax$216KSIMON KEETONGroup President, PSG↗
- Feb 20, 26Compensationamount n/aTrent ThadExec VP & CFO↗
- Feb 20, 26Tax$288KTrent ThadExec VP & CFO↗
- Feb 20, 26Compensationamount n/aSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Feb 20, 26Tax$101KSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Feb 20, 26Compensationamount n/aHassane El-KhouryCEO & President↗
- Feb 12, 26Giftamount n/aBRUCE E KIDDOO↗
- Feb 10, 26Tax$417KSUDHIR GOPALSWAMYGroup President, AMG & ISG↗
- Feb 10, 26Tax$452KTrent ThadExec VP & CFO↗
- Feb 10, 26Tax$1.4MHassane El-KhouryCEO & President↗
- Feb 10, 26Tax$339KSIMON KEETONGroup President, PSG↗
- Feb 6, 26Tax$2.2MHassane El-KhouryCEO & President↗
The full record holds 277 transactions and goes back to Jan 30, 23.
Its sector and its market
ON Semiconductor Corporation among Information Technology companies
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- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
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- 250 clean closes in the period.
- SEC records
- 2,331 documents on file, from Feb 25, 2000 to Oct 7, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
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Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
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