EcoR1 Capital, LLC
CIK 1587114
Transactions on file
45
Open-market buys
36
Win rate (buys)
100%
34 scored
Avg % since filing (buys)
+104.1%
Tickers traded
Recent activity
| Filed | Txn date | Issuer | Roles | Code | Shares | Value | % since Filing | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-05-11 | 2026-05-07 | ATRA Atara Biotherapeutics, Inc. | 10% | Buy | 507,407 | $4.74M | +13.5% | open → |
| 2026-04-22 | 2026-04-20 | TRAX First Tracks Biotherapeutics, Inc. | 10% | Sale | 4,705,575 | $65.00M | +32.6% | open → |
| 2025-01-02 | 2024-12-31 | ZYME Zymeworks Inc. | Director10% | Buy | 146,501 | $2.13M | +57.0% | open → |
| 2025-01-02 | 2025-01-02 | ZYME Zymeworks Inc. | Director10% | Buy | 157,880 | $2.33M | +54.8% | open → |
| 2025-01-02 | 2024-12-30 | ZYME Zymeworks Inc. | Director10% | Buy | 58,988 | $853.6K | +58.1% | open → |
| 2025-01-02 | 2024-12-30 | ANAB ANAPTYSBIO, INC | Director10% | Buy | 65,184 | $842.2K | +364.3% | open → |
| 2025-01-02 | 2025-01-02 | ANAB ANAPTYSBIO, INC | Director10% | Buy | 6,646 | $86.1K | +363.2% | open → |
| 2025-01-02 | 2024-12-31 | ANAB ANAPTYSBIO, INC | Director10% | Buy | 13,268 | $171.6K | +364.0% | open → |
| 2025-01-10 | 2025-01-08 | ZYME Zymeworks Inc. | Director10% | Buy | 21,021 | $295.8K | +62.6% | open → |
| 2025-01-10 | 2025-01-10 | ZYME Zymeworks Inc. | Director10% | Buy | 204,098 | $2.68M | +74.3% | open → |
| 2025-01-15 | 2025-01-13 | ZYME Zymeworks Inc. | Director10% | Buy | 74,125 | $992.5K | +70.9% | open → |
| 2025-01-15 | 2025-01-14 | ZYME Zymeworks Inc. | Director10% | Buy | 54,500 | $739.0K | +68.7% | open → |
| 2025-01-15 | 2025-01-15 | ZYME Zymeworks Inc. | Director10% | Buy | 39,029 | $546.8K | +63.3% | open → |
| 2025-01-21 | 2025-01-17 | ZYME Zymeworks Inc. | Director10% | Buy | 19,748 | $273.9K | +65.0% | open → |
| 2025-01-21 | 2025-01-16 | ZYME Zymeworks Inc. | Director10% | Buy | 121,681 | $1.69M | +64.7% | open → |
| 2025-03-13 | 2025-03-11 | ZYME Zymeworks Inc. | Director10% | Buy | 320,690 | $3.68M | +99.1% | open → |
| 2025-03-13 | 2025-03-12 | ZYME Zymeworks Inc. | Director10% | Buy | 292,934 | $3.59M | +86.8% | open → |
| 2025-03-13 | 2025-03-13 | ZYME Zymeworks Inc. | Director10% | Buy | 468,356 | $5.85M | +83.3% | open → |
| 2025-03-19 | 2025-03-17 | ZYME Zymeworks Inc. | Director10% | Buy | 56,277 | $688.3K | +87.1% | open → |
| 2025-03-19 | 2025-03-18 | ZYME Zymeworks Inc. | Director10% | Buy | 113,880 | $1.44M | +80.9% | open → |
| 2025-03-19 | 2025-03-19 | ZYME Zymeworks Inc. | Director10% | Buy | 58,306 | $737.0K | +81.0% | open → |
| 2025-03-24 | 2025-03-24 | ZYME Zymeworks Inc. | Director10% | Buy | 22,689 | $296.8K | +74.9% | open → |
| 2025-03-24 | 2025-03-21 | ZYME Zymeworks Inc. | Director10% | Buy | 31,033 | $396.6K | +79.0% | open → |
| 2025-03-24 | 2025-03-20 | ZYME Zymeworks Inc. | Director10% | Buy | 73,476 | $950.0K | +77.0% | open → |
| 2025-03-27 | 2025-03-25 | ZYME Zymeworks Inc. | Director10% | Buy | 53,501 | $690.7K | +77.2% | open → |
| 2025-03-27 | 2025-03-26 | ZYME Zymeworks Inc. | Director10% | Buy | 43,848 | $536.7K | +86.9% | open → |
| 2025-04-02 | 2025-03-31 | ZYME Zymeworks Inc. | Director10% | Buy | 4,397 | $51.7K | +94.7% | open → |
| 2025-04-02 | 2025-04-02 | ZYME Zymeworks Inc. | Director10% | Buy | 74,360 | $881.2K | +93.1% | open → |
| 2025-04-02 | 2025-04-01 | ZYME Zymeworks Inc. | Director10% | Buy | 48,658 | $564.4K | +97.2% | open → |
| 2025-04-07 | 2025-04-04 | ZYME Zymeworks Inc. | Director10% | Buy | 196,438 | $2.19M | +104.8% | open → |
| 2025-04-07 | 2025-04-03 | ZYME Zymeworks Inc. | Director10% | Buy | 120,770 | $1.43M | +93.2% | open → |
| 2025-04-18 | 2025-04-17 | ZYME Zymeworks Inc. | Director10% | Buy | 54,760 | $630.8K | +98.6% | open → |
| 2025-04-18 | 2025-04-16 | ZYME Zymeworks Inc. | Director10% | Buy | 73,953 | $825.3K | +105.0% | open → |
| 2025-05-06 | 2025-05-06 | PRTA PROTHENA CORP PUBLIC LTD CO | 10% | Sale | 1,984,053 | $15.16M | +19.8% | open → |
| 2025-05-06 | 2025-05-05 | PRTA PROTHENA CORP PUBLIC LTD CO | 10% | Sale | 977,693 | $7.93M | +12.8% | open → |
| 2025-05-06 | 2025-05-02 | PRTA PROTHENA CORP PUBLIC LTD CO | 10% | Sale | 3,317,938 | $27.74M | +9.4% | open → |
| 2025-05-16 | 2025-05-14 | ITOS iTeos Therapeutics, Inc. | 10% | Buy | 1,658,978 | $12.29M | — | open → |
| 2025-05-16 | 2025-05-15 | ITOS iTeos Therapeutics, Inc. | 10% | Buy | 3,300,000 | $26.40M | — | open → |
| 2025-05-19 | 2025-05-15 | ZYME Zymeworks Inc. | Director10% | Buy | 49,502 | $565.8K | +100.2% | open → |
| 2025-05-19 | 2025-05-19 | ZYME Zymeworks Inc. | Director10% | Buy | 5,919 | $69.7K | +94.2% | open → |
| 2025-06-27 | 2025-06-26 | ZYME Zymeworks Inc. | Director10% | Tax | 41 | $521.11 | +80.0% | open → |
| 2025-06-27 | 2025-06-26 | ZYME Zymeworks Inc. | Director10% | X | 5,086,480 | $0.00 | — | open → |
| 2025-07-30 | 2025-07-28 | ADAP Adaptimmune Therapeutics PLC | 10% | Sale | 33,931,740 | $3.73M | — | open → |
| 2025-07-30 | 2025-07-29 | ADAP Adaptimmune Therapeutics PLC | 10% | Sale | 2,687,460 | $268.7K | — | open → |
| 2025-07-30 | 2025-07-30 | ADAP Adaptimmune Therapeutics PLC | 10% | Sale | 27,433,338 | $2.74M | — | open → |
