SEC 13F Intelligence

Rock Springs Capital Management LP / ERAS

Rock Springs Capital Management LP’s Erasca Inc Position

Does Rock Springs Capital Management LP own Erasca Inc (ERAS)? Yes — 1.10M shares worth $18M (+1.05% of its 13F portfolio) as of Q1 2026, up from 951.7K shares the prior filed quarter.

Position Value
$18M
Q1 2026
Shares
1.10M
% of Portfolio
+1.05%
Quarters Held
2
currently held

Position History ERAS

Reported value by quarter
Q4 ’25: $4MQ4 ’25Q1 ’26: $18MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 20261.10M$18M+1.05%
Q4 2025951.7K$4M+0.18%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of ERAS.