2SEVENTY BIO INC

CUSIP: 901384107 Class: Common Stock

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

Note: Option positions (PUT/CALL) are excluded.

Q4 2022
Shares 1,143,494 Value ($000) $10,715 Avg Close — Range —
Q3 2022
Shares 2,341,313 Value ($000) $34,066 Avg Close — Range —
Q2 2022
Shares 3,495,943 Value ($000) $46,146 Avg Close — Range —
Q1 2022
Shares 3,495,943 Value ($000) $59,641 Avg Close — Range —
Q4 2021
Shares 1,917,063 Value ($000) $49,134 Avg Close — Range —