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See how Context works →On the price, the facts of the public record◆Adverse 8-K filing◇Significant stake declared (13D)
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.
- Sep 28, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Sep 23, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Sep 16, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year245
SEC filings on record45122 flagged findings
Reported transactions (Form 4)77since Mar 16, 2023 · and 1 other holding
Corporate events (8-K)30since Sep 21, 2021
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.
Reverse splits in 5 years
1 reverse split in 5 years (1:80 on Sep 11, 2026) · 1:80 cumulative
The other times: of 818 securities that did their first reverse split in 5 years, a year later the median was worth 0.53× the price on the day of the split; 382 lost more than half and 209 rose (809 with a price a year later).
Our own series, not the whole market: based on the splits we have on record (provider and SEC); an unrecorded one does not count. Historical distribution, not a prediction.
The 25 most recent filings (of 451)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 8, 26SCHEDULE 13D/A ↗Stake with intent to influence · D. E. Shaw & Co., L.L.C. · 6.0% · event on Oct 6, 26 · amendment
- Sep 28, 268-K ↗Current report · Other events
- Sep 28, 26SCHEDULE 13D/A ↗Stake with intent to influence · D. E. Shaw & Co., L.L.C. · 5.1% · event on Sep 24, 26 · amendment
Insider transaction · 7 Form 4 filingsshow all 7hide
- Sep 23, 268-K ↗Current report · Other events
- Sep 22, 26Form 3 ↗Insider transaction
- Sep 16, 26DEF 14A ↗Shareholder meeting and votes
- Sep 16, 268-K ↗Current report · A senior executive left or was appointed
- Sep 11, 268-K ↗Current report · Change in shareholder rights · Bylaws or fiscal year change · Other events
- Sep 9, 268-K ↗Current report · Other events
- Sep 3, 26PRE 14A ↗Shareholder meeting and votes
- Sep 3, 268-K ↗Current report · Bylaws or fiscal year change
- Aug 26, 268-K ↗Current report · Bylaws or fiscal year change
- Aug 24, 26SCHEDULE 13D/A ↗Stake with intent to influence · D. E. Shaw & Co., L.L.C. · 6.0% · event on Aug 20, 26 · amendment
451 filings on record, the oldest from Nov 9, 18.
Listing the 25 most recent filings of the 451 on record.
42315
- Sep 16, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Aug 21, 26Entered a material agreement+4 more in the same filing8-K 1.01 ↗
- Jul 27, 26Entered a material agreement+5 more in the same filing8-K 1.01 ↗
- Jul 15, 26A senior executive left or was appointed+3 more in the same filing8-K 5.02 ↗
- Jun 5, 26Sold unregistered shares+5 more in the same filing8-K 3.02 ↗
- May 18, 26Entered a material agreement+4 more in the same filing8-K 1.01 ↗
- Apr 9, 26Listing notice (8-K 3.01)8-K 3.01 ↗
- Sep 25, 25Sold unregistered shares8-K 3.02 ↗
- Jun 25, 25A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Sep 13, 24Listing notice (8-K 3.01)8-K 3.01 ↗
- May 24, 24Listing notice (8-K 3.01)8-K 3.01 ↗
- May 6, 24Entered a material agreement+4 more in the same filing8-K 1.01 ↗
8 older filings not shown · The record reaches back to Mar 11, 19.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Oct 20, 23Listing notice (8-K 3.01)8-K 3.01 ↗
The full record holds 4 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 13D: stake and stated purpose
Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.
- D. E. Shaw & Co., L.L.C.6.0%Oct 6, 26SCHEDULE 13D/A ↗4 co-filers on this document — the figure is the largest single stake, not their sum. · 5 earlier filings
- Growth Equity Opportunities 18 VGE, LLC1.7%Feb 23, 26SCHEDULE 13D/A ↗12 co-filers on this document — the figure is the largest single stake, not their sum.
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.
- 683 Capital Management, LLC10.0%Jun 4, 26SCHEDULE 13G ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
- Context Capital Management, LLC9.9%Jun 4, 26SCHEDULE 13G ↗5 co-filers on this document — the figure is the largest single stake, not their sum.
- DeepCurrents Investment Group LLC7.7%Jun 4, 26SCHEDULE 13G ↗4 co-filers on this document — the figure is the largest single stake, not their sum.
- Opaleye Management Inc.5.1%Jul 22, 26SCHEDULE 13G ↗3 co-filers on this document — the figure is the largest single stake, not their sum.
- The Vanguard Group5.0%Jun 30, 25SCHEDULE 13G ↗
show 3 more holdershide
- Octagon Capital Advisors LP3.8%Mar 31, 26SCHEDULE 13G/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
- Invus Public Equities, L.P.2.8%Dec 31, 24SCHEDULE 13G/A ↗8 co-filers on this document — the figure is the largest single stake, not their sum.
- BlackRock, Inc.1.0%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.
- Aug 19, 25Buy$50KSandra Milligan↗
- Jun 24, 24Sell$1KRichard ArandaChief Medical Officer↗
- Jun 21, 24Buy$250KFaheem HasnainPresident & CEO↗
- Jun 18, 24Buy$59KBryan GiraudoCOO/CFO↗
- Jun 17, 24Buy$15KRobert Paul Smith JRChief Commercial Officer↗
- Mar 27, 24Sell$27KFaheem HasnainPresident & CEO↗
- Mar 27, 24Sell$7KBryan GiraudoCOO/CFO↗
- Mar 27, 24Sell$7KWaage ChristianEVP, Tech Ops and Admin↗
- Mar 18, 24Sell$5KCaryn PetersonEVP, Regulatory Affairs↗
- Mar 18, 24Sell$5KRichard ArandaChief Medical Officer↗
- Nov 15, 23Buy$25KSandra Milligan↗
- Nov 13, 23Buy$113KBryan GiraudoCOO/CFO↗
There are 10 more transactions in this stretch.
Stock compensation, tax and giftsshow the 15 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.
- Jan 2, 26Compensationamount n/aFaheem HasnainPresident & CEO↗
- Jan 2, 26Compensationamount n/aWaage ChristianEVP, Tech Ops and Admin↗
- Jan 2, 26Compensationamount n/aBryan GiraudoCOO/CFO↗
- Jan 2, 26Compensationamount n/aCaryn PetersonEVP, Regulatory Affairs↗
- Jan 2, 26Compensationamount n/aRichard ArandaChief Medical Officer↗
- Jan 2, 26Compensationamount n/aRobert Paul Smith JRChief Commercial Officer↗
- Oct 1, 25Compensationamount n/aFaheem HasnainPresident & CEO↗
- Oct 1, 25Compensationamount n/aWaage ChristianEVP, Tech Ops and Admin↗
- Oct 1, 25Compensationamount n/aBryan GiraudoCOO/CFO↗
- Oct 1, 25Compensationamount n/aCaryn PetersonEVP, Regulatory Affairs↗
- Oct 1, 25Compensationamount n/aRichard ArandaChief Medical Officer↗
- Oct 1, 25Compensationamount n/aRobert Paul Smith JRChief Commercial Officer↗
- Jul 24, 23Compensation$25KWaage ChristianEVP, Tech Ops and Admin↗
- Jul 24, 23Compensation$983KFaheem HasnainPresident & CEO↗
- Jul 24, 23Compensation$98KBryan GiraudoCOO/CFO↗
The full record holds 37 transactions and goes back to Mar 16, 23.
Its sector and its market
Gossamer Bio Inc. among Health Care companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
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- SEC records
- 451 documents on file, from Nov 9, 2018 to Oct 8, 2026.
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- No description available.
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- 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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It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.
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