Gossamer Bio, Inc. - GOSS
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 51
Latest filed: Nov 06, 2026
| Form | Count |
|---|---|
| 8-K | 18 |
| 4 | 18 |
| SCHEDULE 13D/A | 6 |
| SCHEDULE 13G | 5 |
| SCHEDULE 13G/A | 3 |
| SCHEDULE 13D | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| Nov 06, 2026 | SCHEDULE 13G/A | — | 0001493152-26-050449 | View |
| Nov 06, 2026 | SCHEDULE 13G | — | 0000315066-26-002941 | View |
| Oct 29, 2026 | SCHEDULE 13D/A | — | 0001104659-26-120319 | View |
| Oct 28, 2026 | 8-K | Oct 27, 2026 | 0001728117-26-000109 | View |
| Oct 08, 2026 | SCHEDULE 13D/A | — | 0001104659-26-114792 | View |
| Sep 28, 2026 | SCHEDULE 13D/A | — | 0001104659-26-111463 | View |
| Sep 28, 2026 | 8-K | Sep 25, 2026 | 0001728117-26-000106 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063593 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063601 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063606 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063610 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063616 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063619 | View |
| Sep 25, 2026 | 4 | Sep 23, 2026 | 0001628280-26-063624 | View |
| Sep 23, 2026 | 8-K | Sep 23, 2026 | 0001728117-26-000104 | View |
| Sep 16, 2026 | 8-K | Sep 16, 2026 | 0001728117-26-000101 | View |
| Sep 11, 2026 | 8-K | Sep 10, 2026 | 0001728117-26-000094 | View |
| Sep 09, 2026 | 8-K | Sep 09, 2026 | 0001728117-26-000091 | View |
| Sep 03, 2026 | 8-K | Sep 03, 2026 | 0001728117-26-000085 | View |
| Aug 26, 2026 | 8-K | Aug 24, 2026 | 0001728117-26-000079 | View |
| Aug 26, 2026 | 4 | Aug 24, 2026 | 0001553179-26-000005 | View |
| Aug 26, 2026 | 4 | Aug 24, 2026 | 0001857256-26-000006 | View |
| Aug 26, 2026 | 4 | Aug 24, 2026 | 0002003059-26-000008 | View |
| Aug 26, 2026 | 4 | Aug 24, 2026 | 0001740847-26-000006 | View |
| Aug 26, 2026 | 4 | Aug 24, 2026 | 0001352620-26-000006 | View |
| Aug 24, 2026 | SCHEDULE 13D/A | — | 0001104659-26-100440 | View |
| Aug 21, 2026 | 8-K | Aug 20, 2026 | 0001728117-26-000077 | View |
| Aug 13, 2026 | 8-K | Aug 13, 2026 | 0001728117-26-000073 | View |
| Jul 29, 2026 | SCHEDULE 13G | — | 0001493152-26-035186 | View |
| Jul 29, 2026 | SCHEDULE 13G/A | — | 0002012383-26-002802 | View |
| Jul 27, 2026 | 8-K | Jul 23, 2026 | 0001728117-26-000064 | View |
| Jul 24, 2026 | SCHEDULE 13D/A | — | 0001104659-26-086735 | View |
| Jul 15, 2026 | 8-K | Jul 14, 2026 | 0001728117-26-000061 | View |
| Jul 01, 2026 | SCHEDULE 13D/A | — | 0001104659-26-080004 | View |
| Jul 01, 2026 | 8-K | Jul 01, 2026 | 0001728117-26-000057 | View |
| Jun 17, 2026 | 8-K | Jun 17, 2026 | 0001728117-26-000054 | View |
| Jun 11, 2026 | SCHEDULE 13D | — | 0001104659-26-073089 | View |
| Jun 11, 2026 | SCHEDULE 13G | — | 0001104659-26-073064 | View |
| Jun 11, 2026 | SCHEDULE 13G | — | 0001404574-26-000021 | View |
| Jun 09, 2026 | SCHEDULE 13G | — | 0001301396-26-000003 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0001728117-26-000047 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0002015114-26-000001 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0001859810-26-000003 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0001512984-26-000001 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0001538894-26-000002 | View |
| Jun 05, 2026 | 4 | Jun 04, 2026 | 0002015102-26-000001 | View |
| Jun 05, 2026 | 8-K | Jun 04, 2026 | 0001728117-26-000042 | View |
| Jun 05, 2026 | 8-K | Jun 03, 2026 | 0001728117-26-000045 | View |
| Jun 02, 2026 | 8-K | Jun 02, 2026 | 0001728117-26-000040 | View |
| May 18, 2026 | 8-K | May 18, 2026 | 0001728117-26-000036 | View |
| May 14, 2026 | SCHEDULE 13G/A | — | 0001214659-26-006204 | View |