Gossamer Bio, Inc. 13D/A filed by D. E. Shaw
- Filed on 2026-10-08
- D. E. Shaw & Co., L.P. owns 6.0% of shares
- Valence owns 5.9% of shares
D. E. SHAW & CO, L.P., filed by
GOSS
Gossamer Bio, Inc. SEC filings
Every EDGAR filing for Gossamer Bio, Inc. (GOSS), newest first, with AI summaries and stories.
- Ticker
- GOSS
- CIK
- 1728117
- Sector
- Biotech and pharma
- Latest filing
- Oct 8
Next: earnings expected ~Nov 9 · 10-Q expected ~Nov 10 (deadline Nov 16)
Insider activity
No open-market insider buys in the last 30 days.
Filings
Every filing, newest first. MAJOR and NOTABLE filings lead the app's feed; ROUTINE ones are kept here.
NOTABLESCHEDULE 13D/AGossamer Bio, Inc.GOSSLIVE NOTABLESCHEDULE 13D/AGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by D. E. SHAW & CO, L.P. (amended)
D. E. SHAW & CO, L.P., filed by
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE4Gossamer Bio, Inc.GOSSLIVE 7 insider filings
Sandra Milligan, insider filing for GOSS
Show all 7
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
Sandra Milligan, reporting
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE3Gossamer Bio, Inc.GOSSLIVE Gregory Austin Ciongoli, new insider at GOSS
Gregory Austin Ciongoli, reporting
ROUTINEDEF 14AGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINEDGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINEPRE 14AGossamer Bio, Inc.GOSSLIVE ROUTINE4Gossamer Bio, Inc.GOSSLIVE 5 insider filings
Waage Christian, insider filing for GOSS
Show all 5
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
Waage Christian, reporting
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE NOTABLESCHEDULE 13D/AGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by D. E. SHAW & CO, L.P. (amended)
D. E. SHAW & CO, L.P., filed by
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE NOTABLE10-QGossamer Bio, Inc.GOSSLIVE ROUTINESCHEDULE 13GGossamer Bio, Inc.GOSSLIVE 2 13G filings
Ownership stake disclosure by Opaleye Management Inc.
Show all 2
- SCHEDULE 13GOwnership stake disclosure
- SCHEDULE 13G/AOwnership stake disclosure (amended)
Opaleye Management Inc., filed by
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE NOTABLESCHEDULE 13D/AGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by D. E. SHAW & CO, L.P. (amended)
D. E. SHAW & CO, L.P., filed by
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE NOTABLESCHEDULE 13D/AGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by D. E. SHAW & CO, L.P. (amended)
D. E. SHAW & CO, L.P., filed by
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINE8-KGossamer Bio, Inc.GOSSLIVE NOTABLESCHEDULE 13DGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by D. E. SHAW & CO, L.P.
D. E. SHAW & CO, L.P., filed by
ROUTINESCHEDULE 13GGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by DeepCurrents Investment Group LLC
DeepCurrents Investment Group LLC, filed by
ROUTINESCHEDULE 13GGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by 683 Capital Management, LLC
683 Capital Management, LLC, filed by
ROUTINEDEF 14AGossamer Bio, Inc.GOSSLIVE ROUTINESCHEDULE 13GGossamer Bio, Inc.GOSSLIVE Ownership stake disclosure by Context Capital Management, LLC
Context Capital Management, LLC, filed by
ROUTINE4Gossamer Bio, Inc.GOSSLIVE John D Quisel, insider filing for GOSS
John D Quisel, reporting
ROUTINE4Gossamer Bio, Inc.GOSSLIVE 5 insider filings
Skye Drynan, insider filing for GOSS
Show all 5
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
- 4Insider filing for GOSS
Skye Drynan, reporting
ROUTINE8-KGossamer Bio, Inc.GOSSLIVE ROUTINEPRE 14AGossamer Bio, Inc.GOSSLIVE