Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-07-29 4:05 pm Purchase | 2026-07-22 | 13G | GOSSAMER BIO INC GOSS | Opaleye Management Inc. | 24,942,565 5.100% | 24,942,565 (New Position) | Filing History |
| 2026-07-29 3:19 pm Sale | 2026-06-30 | 13G | GOSSAMER BIO INC GOSS | BlackRock Inc. BLK | 4,890,593 1.000% | -10,175,115 (-67.54%) | Filing History |
| 2026-07-24 9:14 pm Sale | 2026-07-22 | 13D | GOSSAMER BIO INC GOSS | D. E. Shaw & Co., L.P. | 34,609,565 7.100% | -6,021,161 (-14.82%) | Filing History |
| 2026-07-01 9:23 pm Sale | 2026-06-29 | 13D | GOSSAMER BIO INC GOSS | D. E. Shaw & Co., L.P. | 40,630,726 8.300% | -5,854,569 (-12.59%) | Filing History |
| 2026-06-11 9:13 pm Purchase | 2026-06-04 | 13D | GOSSAMER BIO INC GOSS | D. E. Shaw & Co., L.P. | 46,485,295 9.500% | 46,485,295 (New Position) | Filing History |
| 2026-06-11 8:10 pm Purchase | 2026-06-04 | 13G | GOSSAMER BIO INC GOSS | DeepCurrents Investment Group LLC | 37,665,073 7.700% | 37,665,073 (New Position) | Filing History |
| 2026-06-11 4:54 pm Purchase | 2026-06-04 | 13G | GOSSAMER BIO INC GOSS | 683 Capital Management LLC | 49,868,571 9.990% | 40,537,267 (+434.42%) | Filing History |
| 2026-06-09 08:44 am Purchase | 2026-06-04 | 13G | GOSSAMER BIO INC GOSS | Context Capital Management, LLC | 48,835,788 9.900% | 48,835,788 (New Position) | Filing History |
| 2026-05-14 4:01 pm Sale | 2026-03-31 | 13G | GOSSAMER BIO INC GOSS | Octagon Capital Advisors LP | 8,976,054 3.800% | -6,165,371 (-40.72%) | Filing History |
| 2026-03-27 09:31 am Sale | 2026-03-13 | 13G | GOSSAMER BIO INC GOSS | VANGUARD GROUP INC | 0 0.000% | -11,410,792 (Position Closed) | Filing History |
| 2026-03-24 4:48 pm Sale | 2026-03-18 | 13G | GOSSAMER BIO INC GOSS | 683 Capital Management LLC | 9,331,304 3.900% | -3,000,000 (-24.33%) | Filing History |
| 2026-03-02 11:57 am Purchase | 2026-02-23 | 13G | GOSSAMER BIO INC GOSS | 683 Capital Management LLC | 12,331,304 5.230% | 12,331,304 (New Position) | Filing History |
| 2026-02-24 7:21 pm Sale | 2026-02-23 | 13D | GOSSAMER BIO INC GOSS | Growth Equity Opportunities 18 VGE, LLC | 4,065,134 1.700% | -14,727,942 (-78.37%) | Filing History |
| 2026-02-17 4:02 pm Sale | 2025-12-31 | 13G | GOSSAMER BIO INC GOSS | Octagon Capital Advisors LP | 15,141,425 6.500% | -4,434,629 (-22.65%) | Filing History |
| 2026-01-21 12:30 pm Purchase | 2025-12-31 | 13G | GOSSAMER BIO INC GOSS | BlackRock Inc. BLK | 15,065,708 6.500% | 2,930,369 (+24.15%) | Filing History |
| 2025-07-29 1:34 pm Purchase | 2025-06-30 | 13G | GOSSAMER BIO INC GOSS | VANGUARD GROUP INC | 11,410,792 5.020% | 1,376,643 (+13.72%) | Filing History |
| 2025-07-17 7:54 pm Purchase | 2025-06-30 | 13G | GOSSAMER BIO INC GOSS | BlackRock Inc. BLK | 12,135,339 5.300% | 7,481,720 (+160.77%) | Filing History |
| 2025-02-12 4:30 pm Sale | 2024-12-31 | 13G | GOSSAMER BIO INC GOSS | Invus Public Equities, L.P. | 6,258,880 2.800% | -8,072,642 (-56.33%) | Filing History |
| 2025-02-05 6:28 pm Purchase | 2024-12-31 | 13G | GOSSAMER BIO INC GOSS | Octagon Capital Advisors LP | 19,576,054 8.600% | 19,576,054 (New Position) | Filing History |
| 2025-01-30 9:57 pm Sale | 2024-12-31 | 13G | GOSSAMER BIO INC GOSS | VANGUARD GROUP INC | 10,034,149 4.420% | -1,601,485 (-13.76%) | Filing History |