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
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- Peter Lynch
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| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2025-04-08 4:24 pm Purchase |
2025-04-04 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 17,699,774 25.400% |
841,356 (+4.99%) |
Filing History |
| 2025-03-17 7:50 pm Purchase |
2025-03-13 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 16,858,418 24.200% |
1,138,257 (+7.24%) |
Filing History |
| 2025-02-18 6:25 pm Purchase |
2025-02-17 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 15,720,161 22.800% |
309,083 (+2.01%) |
Filing History |
| 2025-02-14 1:17 pm Purchase |
2024-12-31 | 13G | AlloVir, Inc. ALVR |
EcoR1 Capital LLC | 408,688 8.100% |
408,688 (New Position) |
Filing History |
| 2025-02-14 1:04 pm Purchase |
2024-12-31 | 13G | Eton Pharmaceuticals, Inc. ETON |
EcoR1 Capital LLC | 1,981,003 7.700% |
583,334 (+41.74%) |
Filing History |
| 2025-02-14 12:47 pm Sale |
2024-12-31 | 13G | Atea Pharmaceuticals, Inc. AVIR |
EcoR1 Capital LLC | 3,341,653 4.000% |
-2,100,243 (-38.59%) |
Filing History |
| 2025-02-14 12:33 pm Sale |
2024-12-31 | 13G | Tango Therapeutics, Inc. TNGX |
EcoR1 Capital LLC | 10,630,736 9.900% |
-2,700,000 (-20.25%) |
Filing History |
| 2025-02-14 12:26 pm Sale |
2024-12-31 | 13G | HOOKIPA Pharma Inc. HOOK |
EcoR1 Capital LLC | 388,861 4.000% |
-182,866 (-31.98%) |
Filing History |
| 2025-02-14 12:11 pm Sale |
2024-12-31 | 13G | Aadi Bioscience, Inc. AADI |
EcoR1 Capital LLC | 345,253 1.400% |
-1,500,000 (-81.29%) |
Filing History |
| 2025-01-13 7:18 pm Purchase |
2025-01-10 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 15,411,078 22.400% |
718,797 (+4.89%) |
Filing History |
| 2025-01-03 7:45 pm Unchanged |
2024-12-31 | 13D | Prothena Corporation plc PRTA |
EcoR1 Capital LLC | 11,584,280 21.500% |
0 (Unchanged) |
Filing History |
| 2024-12-23 7:54 pm Purchase |
2024-12-19 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 14,692,281 21.300% |
559,990 (+3.96%) |
Filing History |
| 2024-12-23 7:50 pm Sale |
2024-12-19 | 13G | Mersana Therapeutics, Inc. MRSN |
EcoR1 Capital LLC | 11,578,447 9.990% |
-7,786,241 (-40.21%) |
Filing History |
| 2024-12-17 5:01 pm Purchase |
2024-12-10 | 13G | uniQure N.V. QURE |
EcoR1 Capital LLC | 3,632,087 7.500% |
3,632,087 (New Position) |
Filing History |
| 2024-12-09 4:04 pm Purchase |
2024-12-02 | 13G | Eton Pharmaceuticals, Inc. ETON |
EcoR1 Capital LLC | 1,397,669 5.400% |
1,397,669 (New Position) |
Filing History |
| 2024-11-15 10:34 am Sale |
2024-09-30 | 13G | Atea Pharmaceuticals, Inc. AVIR |
EcoR1 Capital LLC | 5,441,896 6.400% |
-1,553,965 (-22.21%) |
Filing History |
| 2024-11-14 6:22 pm Sale |
2024-09-30 | 13G | Edgewise Therapeutics, Inc. EWTX |
EcoR1 Capital LLC | 1,250,385 1.300% |
-2,242,809 (-64.21%) |
Filing History |
| 2024-11-14 6:19 pm Purchase |
2024-09-30 | 13G | Aligos Therapeutics, Inc. ALGS |
EcoR1 Capital LLC | 356,117 9.990% |
356,117 (New Position) |
Filing History |
| 2024-11-14 6:16 pm Purchase |
2024-09-30 | 13G | Xencor, Inc. XNCR |
EcoR1 Capital LLC | 6,719,304 9.400% |
1,436,788 (+27.20%) |
Filing History |
| 2024-11-14 6:13 pm Purchase |
2024-09-30 | 13G | Voyager Therapeutics, Inc. VYGR |
EcoR1 Capital LLC | 5,617,719 9.990% |
1,766,212 (+45.86%) |
Filing History |