13D Filings

EcoR1 Capital, LLC

CIK

1587114

13D Filings

14

Companies

5

Latest Filing

Jan 20, 2026, 02:01 PM

Filing History
Company
% Owned
Type
Filed
Aktis Oncology, Inc.

9.10%

NEW

Jan 20, 2026, 02:01 PM

Zymeworks Inc.
ZYME

30.70%

Amendment

Nov 19, 2025, 05:39 PM

Galapagos NV
GLPG

13.22%

+1.38%

Amendment

Jul 28, 2025, 08:37 PM

Zymeworks Inc.
ZYME

30.70%

+5.30%

NEW

Jun 27, 2025, 06:14 PM

PROTHENA CORP PUBLIC LTD CO
PRTA

0.00%

-9.90%

Amendment

May 29, 2025, 09:08 PM

Galapagos NV
GLPG

11.84%

Amendment

May 19, 2025, 06:33 PM

iTeos Therapeutics, Inc.

27.90%

NEW

May 16, 2025, 07:22 PM

PROTHENA CORP PUBLIC LTD CO
PRTA

9.90%

-11.60%

Amendment

May 6, 2025, 07:08 PM

Zymeworks Inc.
ZYME

25.40%

+1.20%

Amendment

Apr 8, 2025, 04:24 PM

Zymeworks Inc.
ZYME

24.20%

+1.40%

Amendment

Mar 17, 2025, 07:50 PM

Zymeworks Inc.
ZYME

22.80%

+0.40%

Amendment

Feb 18, 2025, 06:25 PM

Zymeworks Inc.
ZYME

22.40%

+1.10%

Amendment

Jan 13, 2025, 07:18 PM

Prothena Corporation plc
PRTA

21.50%

Amendment

Jan 3, 2025, 07:45 PM

Zymeworks Inc.
ZYME

21.30%

Amendment

Dec 23, 2024, 07:54 PM

Rows:

114 of 14

1