EcoR1 Capital, LLC: ERAS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of EcoR1 Capital, LLC on ERAS, newest first. How the timeline and the estimate are built.

EcoR1 Capital, LLC held 330,000 ERAS shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

period ended2026-06-30
13F 330,000 shares
Change vs previous 13F -570,000 shares
0.3% of the 13F portfolio, value $6,045,600.
13F-HR 0000935836-26-000415 filed by EcoR1 Capital, LLC
Filed 2026-08-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 900,000 shares
Change vs previous 13F not available
0.62% of the 13F portfolio, value $14,562,000.
13F-HR 0000935836-26-000270 filed by EcoR1 Capital, LLC
Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
Acceptance time not in the bulk data set (spec §4.2).