EcoR1 Capital LLC 13D and 13G filings for Zymeworks Inc.:
- 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.
- Shares have been adjusted for stock splits.
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 2024-02-22 7:01 pm Unchanged |
2024-02-22 | 13D | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 14,132,291 19.990% |
0 (Unchanged) |
Filing |
| 2024-02-14 6:59 pm Purchase |
2023-12-31 | 13G | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 14,132,291 19.990% |
694,818 (+5.17%) |
Filing |
| 2023-06-21 4:05 pm Purchase |
2023-06-16 | 13G | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 13,437,473 19.900% |
5,868,900 (+77.54%) |
Filing |
| 2022-11-01 4:01 pm Purchase |
2022-10-31 | 13G | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 7,568,573 12.000% |
1,600,000 (+26.81%) |
Filing |
| 2022-10-28 5:33 pm Purchase |
2022-10-26 | 13G | Zymeworks Inc. ZYME |
EcoR1 Capital LLC | 5,968,573 9.900% |
5,968,573 (New Position) |
Filing |