EcoR1 Capital LLC

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EcoR1 Capital LLC
Firm
Address357 Tehama Street 3
San Francisco, CA 94103
Source
Associated Funds Form D Role 2011 - 2026 Raised AUM
EcoR1 Special Opportunity Fund III LP 021-296123 Executive Officer
EcoR1 Capital LLC
EcoR1 Special Opportunity Fund II LP 021-250824 Executive Officer
0.6 M
EcoR1 Special Opportunity Fund I LP 021-234162 Executive Officer
8.8 M
EcoR1 Capital Fund LP 021-191130 Executive Officer
117.8 M 229.0 M
EcoR1 Capital Fund Qualified LP 021-211072 Executive Officer
1,811.4 M 3,130.2 M
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Aktis Oncology Inc AKTS
Common Stock
2026-01-12 Buy 2,077,779 $18.00 37,400,022
Aktis Oncology Inc AKTS
Common Stock
2026-01-12 Conversion 128,506
Aktis Oncology Inc AKTS
Common Stock
2026-01-12 Conversion 202,862
Aktis Oncology Inc AKTS
Common Stock
2026-01-12 Conversion 2,270,879
Aktis Oncology Inc AKTS
Common Stock
2026-01-12 Buy 144,443 $18.00 2,599,974
Aktis Oncology Inc AKTS
Series A Redeemable Convertible Preferred Stock · derivative
2026-01-12 Conversion 9,913,810
Aktis Oncology Inc AKTS
Series A Redeemable Convertible Preferred Stock · derivative
2026-01-12 Conversion 997,299
Aktis Oncology Inc AKTS
Series A Redeemable Convertible Preferred Stock · derivative
2026-01-12 Conversion 488,891
Aktis Oncology Inc AKTS
Series B Redeemable Convertible Preferred Stock · derivative
2026-01-12 Conversion 2,397,500
Aktis Oncology Inc AKTS
Class A Common Stock · derivative
2026-01-12 Conversion 965,190
Aktis Oncology Inc AKTS
Class A Common Stock · derivative
2026-01-12 Conversion 86,222
Aktis Oncology Inc AKTS
Series B Redeemable Convertible Preferred Stock · derivative
2026-01-12 Conversion 102,500
Adaptimmune Therapeutics PLC ADAP
Ordinary Shares
2025-07-30 Sell 27,433,338 $0.10 2,743,334
Adaptimmune Therapeutics PLC ADAP
Ordinary Shares
2025-07-29 Sell 2,687,460 $0.10 268,746
Adaptimmune Therapeutics PLC ADAP
Ordinary Shares
2025-07-28 Sell 33,931,740 $0.11 3,732,491
Zymeworks Inc ZYME
Pre-Funded Warrants (right to acquire) · derivative
2025-06-26 Option exercise 5,086,521 $0.00
Zymeworks Inc ZYME
Common Stock
2025-06-26 Option exercise 5,086,480 $0.00
Zymeworks Inc ZYME
Common Stock
2025-06-26 Tax withheld 41 $12.71 521
Zymeworks Inc ZYME
Common Stock
2025-05-19 Buy 5,919 $11.78 69,726
Zymeworks Inc ZYME
Common Stock
2025-05-15 Buy 49,502 $11.43 565,808
showing 20 of 159 most recent transactions
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