SEC CIK 1587114

EcoR1 Capital, LLC

Reported ownership across 4 companies, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
ANABview stock →7,880,0942025-01-02
PRTAview stock →5,304,5962025-05-06
VYGRview stock →3,851,5072023-01-11
ATRAview stock →1,044,5932026-05-07

Position History — ANAB

Reported shares owned immediately after each Form 4 transaction, over time.

02,626,6985,253,3967,880,0942021-012021-032021-042021-042021-052022-052024-082024-122025-01

Recent Filings — ANAB

DateActivitySharesPriceOwned After
2025-01-02Open-market buy6,646$12.957,880,094
2024-12-31Open-market buy13,268$12.937,873,448
2024-12-30Open-market buy65,184$12.927,860,180
2024-08-14Open-market buy273,972$36.507,794,996
2022-05-05Open-market sale668,237$21.637,521,024
2022-05-05Open-market buy668,237$21.637,521,024
2021-05-04Open-market buy165,000$23.257,520,424
2021-05-03Open-market buy20,800$23.317,355,424
2021-04-30Open-market buy35,700$23.167,334,624
2021-04-27Open-market buy33,800$23.827,298,924
2021-04-26Open-market buy13,900$23.807,265,124
2021-04-23Open-market buy99,600$23.547,251,224
2021-03-09Open-market buy531,000$18.707,151,624
2021-03-08Open-market buy2,777,800$18.976,620,624
2021-02-23Open-market buy29,500$25.483,842,824
2021-01-04———3,813,324

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.