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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.
- Aug 27, 2026Annual report · 10-KFiled by the company itself.Open the filing ↗
- Aug 12, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Jul 16, 2026Reported sale · Form 4Bing Xue, EVP-WW Sales & Bus Development · $29.7KOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record91911 flagged findings
Reported transactions (Form 4)55since Jan 9, 2023
Corporate events (8-K)30since Mar 29, 2016
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
semiconductor company in the United States
Source: Wikidata (CC0 1.0) · 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.
- 2026-05-06capital return (buybacks/dividends)recentOpen filing ↗“…2028 6,416 191 2029 4,773 — 2030 3,729 — Thereafter 2,094 — Total minimum lease payments 25,762 1,621 Less: Amounts representing…”
+1 more passage from the same document
- “…25,762 1,621 Less: Amounts representing interest ( 2,528 ) ( 88 ) Total lease liabilities $ 23,234 $ 1,533 20 ALPHA AND OMEGA…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 919)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Sep 30, 26DEFA14A ↗Shareholder meeting and votes
- Sep 30, 26DEF 14A ↗Shareholder meeting and votes
- Aug 27, 2610-K ↗Annual report
- Aug 14, 26Form 4 ↗Insider transaction
- Aug 12, 268-K ↗Current report · Results
- Aug 10, 26SCHEDULE 13G/A ↗Passive stake · Mike F. Chang · 13.9% · event on Jun 30, 26 · amendment
- Aug 7, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 7.8% · event on Jun 30, 26
- Jul 17, 26Form 3 ↗Insider transaction
- Jul 16, 26Form 144 ↗Notice of proposed sale
- Jul 15, 26Form 4 ↗Insider transaction
- Jul 14, 26SCHEDULE 13G/A ↗Passive stake · Dimensional Fund Advisors LP · 4.5% · event on Jun 30, 26 · amendment
- Jul 10, 268-K ↗Current report · A senior executive left or was appointed
- Jun 17, 26Form 4 ↗Insider transaction
- Jun 16, 26Form 144 ↗Notice of proposed sale
- May 22, 26Form 144 ↗Notice of proposed sale
- May 20, 26Form 4 ↗Insider transaction
919 filings on record, the oldest from Mar 31, 10.
Listing the 25 most recent filings of the 919 on record.
21039
- Jul 10, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 12, 26Completed an acquisition or disposal+1 more in the same filing8-K 2.01 ↗
- Apr 17, 26A senior executive left or was appointed8-K 5.02 ↗
- Mar 9, 26A senior executive left or was appointed8-K 5.02 ↗
- Jul 14, 25Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Jun 4, 25Auditor change filing (8-K Item 4.01)8-K/A 4.01 ↗
- Mar 4, 25A senior executive left or was appointed8-K 5.02 ↗
- Nov 25, 24Auditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
- Feb 24, 23A senior executive left or was appointed8-K 5.02 ↗
- Dec 8, 22A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Oct 11, 22Auditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
- Feb 28, 22A senior executive left or was appointed8-K 5.02 ↗
16 older filings not shown · The record reaches back to Sep 27, 11.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Mar 29, 16Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Apr 29, 13Write-down of assets+2 more in the same filing8-K 2.06 ↗
The full record holds 2 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.
- Mike F. Chang13.9%Jun 30, 26SCHEDULE 13G/A ↗1 earlier filing
- BlackRock, Inc.12.7%Mar 31, 25SCHEDULE 13G/A ↗
- STATE STREET CORPORATION7.8%Jun 30, 26SCHEDULE 13G ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
- Hood River Capital Management LLC6.8%Mar 31, 25SCHEDULE 13G ↗
- Dimensional Fund Advisors LP4.5%Jun 30, 26SCHEDULE 13G/A ↗2 earlier filings
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 Jul 16, BING XUE filed notice of intent to sell up to $30K. 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 $30K on Jul 16, per their Form 4. That is 100% of the shares announced.
- Jul 16, 26Sell$30KBing XueEVP-WW Sales & Bus Development↗
- Jun 16, 26Sell$231KBing XueEVP-WW Sales & Bus Development↗
- May 22, 26Sell$152KClaudia Chen↗
- May 22, 26Sell$9KClaudia Chen↗
- May 18, 26Sell$202KBing XueEVP-WW Sales & Bus Development↗
- Apr 17, 26Sell$49KStephen Chunping ChangChief Executive Officer↗
- Apr 17, 26Sell$118KStephen Chunping ChangChief Executive Officer↗
- Apr 17, 26Sell$346KStephen Chunping ChangChief Executive Officer↗
- Apr 17, 26Sell$302KYifan LiangCFO and Corp Secretary↗
- Apr 16, 26Sell$57KBing XueEVP-WW Sales & Bus Development↗
- Apr 14, 26Sell$178KStephen Chunping ChangChief Executive Officer↗
- Apr 14, 26Sell$214KYifan LiangCFO and Corp Secretary↗
There are 3 more transactions in this stretch.
Stock compensation, tax and giftsshow the 25 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.
- Aug 24, 26Giftamount n/aMike F Chang↗
- Aug 24, 26Giftamount n/aStephen Chunping ChangChief Executive Officer↗
- Aug 13, 26Giftamount n/aMike F Chang↗
- Jul 20, 26Compensationamount n/aJoshua C. Chien↗
- Jul 13, 26Giftamount n/aMike F Chang↗
- Jun 1, 26Giftamount n/aMike F Chang↗
- May 26, 26Giftamount n/aMike F Chang↗
- May 22, 26Giftamount n/aMike F Chang↗
- May 21, 26Giftamount n/aStephen Chunping ChangChief Executive Officer↗
- Apr 28, 26Giftamount n/aYifan LiangCFO and Corp Secretary↗
- Apr 27, 26Giftamount n/aYifan LiangCFO and Corp Secretary↗
- Mar 16, 26Compensationamount n/aMike F Chang↗
- Mar 16, 26Compensationamount n/aWenjun LiChief Operating Officer↗
- Mar 16, 26Tax$309KMike F Chang↗
- Mar 16, 26Tax$71KWenjun LiChief Operating Officer↗
- Mar 16, 26Tax$49KWenjun LiChief Operating Officer↗
- Mar 16, 26Compensationamount n/aBing XueEVP-WW Sales & Bus Development↗
- Mar 16, 26Tax$120KBing XueEVP-WW Sales & Bus Development↗
- Mar 16, 26Tax$77KBing XueEVP-WW Sales & Bus Development↗
- Mar 16, 26Compensationamount n/aBing XueEVP-WW Sales & Bus Development↗
- Mar 16, 26Compensationamount n/aMike F Chang↗
- Mar 16, 26Tax$385KMike F Chang↗
- Mar 16, 26Tax$211KMike F Chang↗
- Mar 16, 26Compensationamount n/aMike F Chang↗
- Mar 16, 26Compensationamount n/aYifan LiangCFO and Corp Secretary↗
The full record holds 226 transactions and goes back to Aug 15, 22.
Its sector and its market
Alpha and Omega Semiconductor Limited 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
- 919 documents on file, from Mar 31, 2010 to Sep 30, 2026.
- Company description
- Wikidata, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
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Which SEC documents appear here?
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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