Gossamer Bio, Inc. SEC EDGAR Filings (CIK 0001728117)

SEC EDGAR filings, ownership reports, and insider transactions for Gossamer Bio, Inc..

Symbol
GOSS on Nasdaq
Industry
Pharmaceutical Preparations (Office Of Life Sciences)
Business address
3115 Merryfield Row, Suite 120, San Diego, CA, 92121
State of incorporation
DE
Fiscal year end
31 December
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Gossamer Bio, Inc. has filed 404 SEC EDGAR filings since 19 Jan 2018

Latest Filings

Recent SEC filings for Gossamer Bio, Inc. including SCHEDULE 13G/A, 4, 8-K and more.

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 21 Jan 2026 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2026 02 Jan 2026
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Nov 2025 05 Nov 2025 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 05 Nov 2025 30 Sep 2025 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2025 01 Oct 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Sep 2025 24 Sep 2025 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 20 Aug 2025 19 Aug 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Aug 2025 05 Aug 2025 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 05 Aug 2025 30 Jun 2025 001-38796
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 29 Jul 2025 005-91334
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 17 Jul 2025 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2025 25 Jun 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Jun 2025 25 Jun 2025 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 16 Jun 2025 16 Jun 2025 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 15 May 2025 15 May 2025 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 15 May 2025 31 Mar 2025 001-38796
ARS Open ARS document View SEC filing for ARS ARS 29 Apr 2025 28 Apr 2025 001-38796
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 29 Apr 2025 001-38796
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 29 Apr 2025 28 Apr 2025 001-38796
S-8 Open S-8 document View SEC filing for S-8 S-8 13 Mar 2025 333-285779
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Mar 2025 13 Mar 2025 001-38796
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 13 Mar 2025 31 Dec 2024 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 06 Mar 2025 04 Mar 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 19 Feb 2025 19 Feb 2025 001-38796
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 12 Feb 2025 005-91334
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 05 Feb 2025 005-91334
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 30 Jan 2025 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 12 Nov 2024 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 12 Nov 2024 005-91334
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 Nov 2024 07 Nov 2024 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 Nov 2024 30 Sep 2024 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Sep 2024 11 Sep 2024 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Aug 2024 12 Aug 2024 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 Aug 2024 30 Jun 2024 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 02 Aug 2024 005-91334
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 18 Jul 2024 18 Jul 2024 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 25 Jun 2024 24 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 24 Jun 2024 21 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 20 Jun 2024 18 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 20 Jun 2024 17 Jun 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Jun 2024 06 Jun 2024 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2024 06 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2024 06 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2024 06 Jun 2024
4 Open 4 document View SEC filing for 4 FORM 4 06 Jun 2024 06 Jun 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 24 May 2024 22 May 2024 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 May 2024 07 May 2024 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 May 2024 31 Mar 2024 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 May 2024 03 May 2024 001-38796
ARS Open ARS document View SEC filing for ARS ARS 26 Apr 2024 26 Apr 2024 001-38796
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 24 Apr 2024 001-38796
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 24 Apr 2024 16 Apr 2024 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 28 Mar 2024 27 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 28 Mar 2024 27 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 28 Mar 2024 27 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 19 Mar 2024 18 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 19 Mar 2024 18 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 12 Mar 2024 11 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 12 Mar 2024 11 Mar 2024
3 Open 3 document View SEC filing for 3 FORM 3 12 Mar 2024 11 Mar 2024
3 Open 3 document View SEC filing for 3 FORM 3 12 Mar 2024 11 Mar 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Mar 2024 11 Mar 2024 001-38796
S-8 Open S-8 document View SEC filing for S-8 S-8 05 Mar 2024 333-277653
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 05 Mar 2024 31 Dec 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 Mar 2024 05 Mar 2024 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 04 Mar 2024 04 Mar 2024 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A GOSSAMER BIO, INC. 14 Feb 2024 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 13 Feb 2024 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A ARCH VENTURE FUND IX, L.P. - GOSSAMER BIO -- SCH 13G/A(#1-EXIT) 09 Feb 2024 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 09 Feb 2024 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 11 Jan 2024 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 11 Jan 2024 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024
4 Open 4 document View SEC filing for 4 FORM 4 05 Dec 2023 04 Dec 2023
3 Open 3 document View SEC filing for 3 FORM 3 05 Dec 2023 04 Dec 2023
4 Open 4 document View SEC filing for 4 FORM 4 29 Nov 2023 28 Nov 2023
3 Open 3 document View SEC filing for 3 FORM 3 29 Nov 2023 28 Nov 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 29 Nov 2023 28 Nov 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 27 Nov 2023 20 Nov 2023 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 22 Nov 2023 20 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Nov 2023 20 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Nov 2023 20 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Nov 2023 20 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Nov 2023 20 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 17 Nov 2023 15 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 14 Nov 2023 13 Nov 2023
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 Nov 2023 30 Sep 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Nov 2023 09 Nov 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Oct 2023 19 Oct 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 07 Sep 2023 06 Sep 2023 001-38796
EFFECT Open EFFECT document View SEC filing for EFFECT 28 Aug 2023 333-274056
424B3 Open 424B3 document View SEC filing for 424B3 424B3 28 Aug 2023 333-274056
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 24 Aug 2023
CORRESP Open CORRESP document View SEC filing for CORRESP 24 Aug 2023
DEL AM Open DEL AM document View SEC filing for DEL AM DEL AM 21 Aug 2023 333-274056
S-3 Open S-3 document View SEC filing for S-3 S-3 18 Aug 2023 333-274056
RW Open RW document View SEC filing for RW RW 18 Aug 2023 333-274045
S-3ASR Open S-3ASR document View SEC filing for S-3ASR S-3ASR 17 Aug 2023 333-274045
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Aug 2023 30 Jun 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 Aug 2023 08 Aug 2023 001-38796
D Open D document View SEC filing for D 07 Aug 2023 021-488995
SC 13D Open SC 13D document View SEC filing for SC 13D GROWTH EQUITY OPPORTUNITIES 18 VGE, LLC / GOSSAMER BIO, INC. -- SCHEDULE 13D 28 Jul 2023 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2023 24 Jul 2023
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2023 24 Jul 2023
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2023 24 Jul 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Jul 2023 19 Jul 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Jul 2023 20 Jul 2023 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 26 Jun 2023 22 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2023 08 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2023 08 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2023 08 Jun 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Jun 2023 08 Jun 2023 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2023 08 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2023 08 Jun 2023
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 10 May 2023 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2023 05 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2023 05 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2023 05 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2023 05 May 2023
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2023 05 May 2023
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 09 May 2023 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 May 2023 09 May 2023 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 May 2023 31 Mar 2023 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 05 May 2023 005-91334
ARS Open ARS document View SEC filing for ARS ARS 28 Apr 2023 28 Apr 2023 001-38796
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 28 Apr 2023 001-38796
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 28 Apr 2023 001-38796
PRE 14A Open PRE 14A document | Open XBRL data View SEC filing for PRE 14A PRE 14A 17 Apr 2023 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 05 Apr 2023 04 Apr 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Apr 2023 03 Apr 2023 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 22 Mar 2023 20 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 20 Mar 2023 16 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 20 Mar 2023 16 Mar 2023
4 Open 4 document View SEC filing for 4 FORM 4 20 Mar 2023 16 Mar 2023
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 17 Mar 2023 31 Dec 2022 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 17 Mar 2023 17 Mar 2023 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A GOSSAMER BIO, INC. 14 Feb 2023 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 09 Feb 2023 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 01 Feb 2023 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 10 Jan 2023 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 04 Jan 2023 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 20 Dec 2022 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
4 Open 4 document View SEC filing for 4 FORM 4 09 Dec 2022 07 Dec 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 Dec 2022 06 Dec 2022 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 03 Nov 2022 30 Sep 2022 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Nov 2022 03 Nov 2022 001-38796
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 27 Oct 2022 24 Oct 2022
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2022 24 Oct 2022
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2022 24 Oct 2022
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2022 24 Oct 2022
S-3ASR Open S-3ASR document View SEC filing for S-3ASR S-3ASR 09 Aug 2022 333-266701
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 Aug 2022 30 Jun 2022 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Aug 2022 09 Aug 2022 001-38796
D Open D document View SEC filing for D 18 Jul 2022 021-452776
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 09 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 15 Jul 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 15 Jul 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 15 Jul 2022
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2022 15 Jul 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Jul 2022 13 Jul 2022 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 05 Jul 2022 01 Jul 2022
4 Open 4 document View SEC filing for 4 FORM 4 23 Jun 2022 22 Jun 2022
8-K Open 8-K document View SEC filing for 8-K 8-K 10 Jun 2022 09 Jun 2022 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2022 31 Mar 2022 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 10 May 2022 10 May 2022 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 05 May 2022 04 May 2022
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 27 Apr 2022 001-38796
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 27 Apr 2022 09 Jun 2022 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 25 Apr 2022 25 Apr 2022 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 24 Mar 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 24 Mar 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 24 Mar 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 17 Mar 2022 16 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 17 Mar 2022 16 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 17 Mar 2022 16 Mar 2022
S-8 Open S-8 document View SEC filing for S-8 S-8 03 Mar 2022 333-263260
S-3ASR Open S-3ASR document View SEC filing for S-3ASR S-3 03 Mar 2022 333-263259
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 03 Mar 2022 31 Dec 2021 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Mar 2022 03 Mar 2022 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 10 Feb 2022 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 03 Feb 2022 005-91334
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
4 Open 4 document View SEC filing for 4 FORM 4 10 Jan 2022 06 Jan 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Nov 2021 30 Sep 2021 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 Nov 2021 08 Nov 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 26 Oct 2021 25 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 26 Oct 2021 25 Oct 2021
4 Open 4 document View SEC filing for 4 FORM 4 26 Oct 2021 25 Oct 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 12 Oct 2021 11 Oct 2021 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Sep 2021 16 Sep 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 20 Sep 2021 16 Sep 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 Aug 2021 30 Jun 2021 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 Aug 2021 09 Aug 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 01 Jul 2021 30 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 22 Jun 2021 21 Jun 2021
3 Open 3 document View SEC filing for 3 FORM 3 22 Jun 2021 21 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 14 Jun 2021 10 Jun 2021
3 Open 3 document View SEC filing for 3 FORM 3 14 Jun 2021 10 Jun 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 14 Jun 2021 09 Jun 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2021 09 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2021 09 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2021 09 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2021 09 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2021 09 Jun 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 May 2021 31 Mar 2021 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 May 2021 06 May 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 05 May 2021 03 May 2021
3 Open 3 document View SEC filing for 3 FORM 3 05 May 2021 03 May 2021
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 27 Apr 2021 001-38796
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 27 Apr 2021 09 Jun 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 20 Apr 2021 16 Apr 2021
3 Open 3 document View SEC filing for 3 FORM 3 20 Apr 2021 16 Apr 2021
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Apr 2021 17 Apr 2021 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 25 Mar 2021 23 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 25 Mar 2021 23 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 25 Mar 2021 23 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2021 25 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2021 25 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2021 25 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2021 25 Feb 2021
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 26 Feb 2021 31 Dec 2020 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Feb 2021 25 Feb 2021 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A GOSSAMER BIO, INC. 16 Feb 2021 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 12 Feb 2021
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 12 Feb 2021
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 12 Feb 2021 005-91334
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 10 Feb 2021 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 02 Feb 2021 005-91334
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 17 Nov 2020 16 Nov 2020 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 Nov 2020 30 Sep 2020 001-38796
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 10 Nov 2020 10 Nov 2020 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 14 Oct 2020 14 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 14 Oct 2020 14 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 14 Oct 2020 14 Oct 2020
8-K Open 8-K document View SEC filing for 8-K 8-K 13 Oct 2020 13 Oct 2020 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 11 Aug 2020 30 Jun 2020 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 11 Aug 2020 11 Aug 2020 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 02 Jul 2020 02 Jul 2020 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jun 2020 23 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Jun 2020 17 Jun 2020
8-K Open 8-K document View SEC filing for 8-K 8-K 18 Jun 2020 17 Jun 2020 001-38796
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 09 Jun 2020 005-91334
8-K Open 8-K document View SEC filing for 8-K 8-K 21 May 2020 18 May 2020 001-38796
424B5 Open 424B5 document View SEC filing for 424B5 424B5 19 May 2020 333-237639
424B5 Open 424B5 document View SEC filing for 424B5 424B5 19 May 2020 333-237639
FWP Open FWP document View SEC filing for FWP FWP 19 May 2020 333-237639
FWP Open FWP document View SEC filing for FWP FWP 18 May 2020 333-237639
305B2 Open 305B2 document View SEC filing for 305B2 305B2 18 May 2020 333-237639
424B5 Open 424B5 document View SEC filing for 424B5 424B5 18 May 2020 333-237639
424B5 Open 424B5 document View SEC filing for 424B5 424B5 18 May 2020 333-237639
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 May 2020 31 Mar 2020 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 12 May 2020 12 May 2020 001-38796
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 27 Apr 2020 001-38796
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 27 Apr 2020 17 Jun 2020 001-38796
S-3ASR Open S-3ASR document View SEC filing for S-3ASR S-3ASR 10 Apr 2020 333-237639
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 24 Mar 2020 31 Dec 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 24 Mar 2020 24 Mar 2020 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020
SC 13G Open SC 13G document View SEC filing for SC 13G GOSSAMER BIO, INC. 14 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 14 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G ARCH VENTURE FUND IX, L.P. - GOSSAMER BIO, INC. -- SCHEDULE 13G 13 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 11 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 10 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 10 Feb 2020 005-91334
SC 13G Open SC 13G document View SEC filing for SC 13G 07 Feb 2020 005-91334
8-K Open 8-K document View SEC filing for 8-K 8-K 13 Jan 2020 13 Jan 2020 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jan 2020 31 Dec 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 31 Dec 2019 27 Dec 2019
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 Nov 2019 30 Sep 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 12 Nov 2019 12 Nov 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Sep 2019 27 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Sep 2019 27 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Sep 2019 27 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Sep 2019 26 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Sep 2019 20 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Sep 2019 16 Sep 2019
8-K Open 8-K document View SEC filing for 8-K 8-K 13 Sep 2019 12 Sep 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Sep 2019 10 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Sep 2019 05 Sep 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 29 Aug 2019 28 Aug 2019
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q - Q2 FY2019 08 Aug 2019 30 Jun 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 08 Aug 2019 08 Aug 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Jun 2019 10 Jun 2019
8-K Open 8-K document View SEC filing for 8-K 8-K 11 Jun 2019 10 Jun 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2019 30 May 2019
8-K Open 8-K document View SEC filing for 8-K 5-30-8-K-HASNAIN TRANSITION 30 May 2019 30 May 2019 001-38796
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 14 May 2019 31 Mar 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 14 May 2019 14 May 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 03 May 2019 02 May 2019 001-38796
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 30 Apr 2019 001-38796
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 30 Apr 2019 10 Jun 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Mar 2019 25 Mar 2019
10-K Open 10-K document View SEC filing for 10-K 10-K 22 Mar 2019 31 Dec 2018 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 22 Mar 2019 22 Mar 2019 001-38796
8-K Open 8-K document View SEC filing for 8-K 8-K 11 Mar 2019 07 Mar 2019 001-38796
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Feb 2019 12 Feb 2019
8-K Open 8-K document View SEC filing for 8-K 8-K 12 Feb 2019 12 Feb 2019 001-38796
S-8 Open S-8 document View SEC filing for S-8 S-8 08 Feb 2019 333-229586
424B4 Open 424B4 document View SEC filing for 424B4 424B4 08 Feb 2019 333-228984
CT ORDER Open CT ORDER document View SEC filing for CT ORDER 08 Feb 2019 333-228984
EFFECT Open EFFECT document View SEC filing for EFFECT 07 Feb 2019 333-228984
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Feb 2019 07 Feb 2019
S-1MEF Open S-1MEF document View SEC filing for S-1MEF S-1MEF 07 Feb 2019 333-229561
CORRESP Open CORRESP document View SEC filing for CORRESP 05 Feb 2019
CORRESP Open CORRESP document View SEC filing for CORRESP 05 Feb 2019
CERT Open CERT document View SEC filing for CERT 05 Feb 2019 001-38796
8-A12B Open 8-A12B document View SEC filing for 8-A12B 8-A12B 04 Feb 2019 001-38796
FWP Open FWP document View SEC filing for FWP FWP 30 Jan 2019 333-228984
S-1/A Open S-1/A document View SEC filing for S-1/A S-1/A 30 Jan 2019 333-228984
FWP Open FWP document View SEC filing for FWP FWP 24 Jan 2019 333-228984
S-1/A Open S-1/A document View SEC filing for S-1/A S-1/A 23 Jan 2019 333-228984
CORRESP Open CORRESP document View SEC filing for CORRESP 26 Dec 2018
CORRESP Open CORRESP document View SEC filing for CORRESP 21 Dec 2018
S-1 Open S-1 document View SEC filing for S-1 S-1 21 Dec 2018 333-228984
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 14 Dec 2018
DRSLTR Open DRSLTR document View SEC filing for DRSLTR 29 Nov 2018
DRS/A Open DRS/A document View SEC filing for DRS/A 29 Nov 2018 377-02311
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 09 Nov 2018
DRS Open DRS document View SEC filing for DRS 11 Oct 2018 377-02311
D Open D document View SEC filing for D 01 Aug 2018 021-318226
D Open D document View SEC filing for D 19 Jan 2018 021-303730
D Open D document View SEC filing for D 19 Jan 2018 021-303729

About this filer

Gossamer Bio, Inc. files with the SEC under CIK 0001728117. This page aggregates EDGAR filings and related ownership activity.

Industry: Pharmaceutical Preparations.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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