ZYMEWORKS INC (ZYME) Stock Ownership and Short Interest
USA - NASDAQ:ZYME - US98985Y1082 - Common Stock
18.16 USD
-0.16 (-0.87%)
| Shares Outstanding | 75.17M |
| Float | 73.28M |
| Float Short Interest Percentage | 9.77% |
| Owners (insider) | 0.69% |
| Owners (institutional) | 99.82% |
| Owners (insider) change | 10.39% |
| Owners (institutional) change | 1.06% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Aug 12, 2025 | Ciongoli Gregory Austin | Grant | 415000 | 12.02 | $ 4,988,300.00 |
| Jun 26, 2025 | EcoR1 Capital, LLC | Other Aquisition | 5086480 | 0.00 | $ 508.65 |
| Jun 26, 2025 | NODELMAN OLEG | Other Aquisition | 5086480 | 0.00 | $ 508.65 |
| Jun 26, 2025 | EcoR1 Capital, LLC | Option Excercise | 41 | 12.71 | $ 521.11 |
| Jun 26, 2025 | NODELMAN OLEG | Option Excercise | 41 | 12.71 | $ 521.11 |
| May 15, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 55421 | 11.47 | $ 635,585.71 |
| May 15, 2025 | NODELMAN OLEG | Open Market Purchase | 55421 | 11.47 | $ 635,585.71 |
| Apr 16, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 128713 | 11.32 | $ 1,456,407.88 |
| Apr 16, 2025 | NODELMAN OLEG | Open Market Purchase | 128713 | 11.32 | $ 1,456,407.88 |
| Apr 3, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 317208 | 11.42 | $ 3,623,970.36 |
| Apr 3, 2025 | NODELMAN OLEG | Open Market Purchase | 317208 | 11.42 | $ 3,623,970.36 |
| Mar 31, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 127415 | 11.75 | $ 1,497,322.33 |
| Mar 31, 2025 | NODELMAN OLEG | Open Market Purchase | 127415 | 11.75 | $ 1,497,322.33 |
| Mar 25, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 97349 | 12.61 | $ 1,227,309.18 |
| Mar 25, 2025 | NODELMAN OLEG | Open Market Purchase | 97349 | 12.61 | $ 1,227,309.18 |
| Mar 20, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 127198 | 12.92 | $ 1,643,247.98 |
| Mar 20, 2025 | NODELMAN OLEG | Open Market Purchase | 127198 | 12.92 | $ 1,643,247.98 |
| Mar 17, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 228463 | 12.55 | $ 2,866,552.72 |
| Mar 17, 2025 | NODELMAN OLEG | Open Market Purchase | 228463 | 12.55 | $ 2,866,552.72 |
| Mar 11, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 1081980 | 12.13 | $ 13,120,914.17 |
| Mar 11, 2025 | NODELMAN OLEG | Open Market Purchase | 1081980 | 12.13 | $ 13,120,914.17 |
| Jan 16, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 141429 | 13.88 | $ 1,963,538.26 |
| Jan 13, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 167654 | 13.59 | $ 2,278,811.37 |
| Jan 8, 2025 | EcoR1 Capital, LLC | Open Market Purchase | 225119 | 13.21 | $ 2,974,818.88 |
| Jan 6, 2025 | Moore Paul Andrew | Option Excercise | 37166 | 0.00 | $ 0.00 |
| Jan 6, 2025 | Moore Paul Andrew | Open Market Sale | 21200 | 14.92 | $ 316,390.92 |
| Jan 6, 2025 | Galbraith Kenneth | Option Excercise | 114332 | 0.00 | $ 0.00 |
| Jan 6, 2025 | Galbraith Kenneth | Open Market Sale | 57291 | 14.92 | $ 855,016.61 |
| Jan 6, 2025 | Smith Jeffrey T L | Option Excercise | 20000 | 0.00 | $ 0.00 |
| Jan 6, 2025 | Smith Jeffrey T L | Open Market Sale | 11110 | 14.92 | $ 165,806.75 |
| Dec 30, 2024 | EcoR1 Capital, LLC | Open Market Purchase | 363369 | 14.64 | $ 5,321,175.87 |
| Dec 24, 2024 | EcoR1 Capital, LLC | Open Market Purchase | 130309 | 14.44 | $ 1,882,114.86 |
| Dec 20, 2024 | EcoR1 Capital, LLC | Open Market Purchase | 955990 | 14.12 | $ 13,501,604.97 |