GENERATION BIO CO

CUSIP: 37148K100 Class: Common Stock

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q2 2025
Shares 8,462,611 Value ($000) $3 Avg Close — Range —
Q1 2025
Shares 9,061,839 Value ($000) $4 Avg Close — Range —
Q4 2024
Shares 9,279,059 Value ($000) $10 Avg Close — Range —
Q3 2024
Shares 9,351,590 Value ($000) $23 Avg Close — Range —
Q2 2024
Shares 9,513,626 Value ($000) $27 Avg Close — Range —
Q1 2024
Shares 8,878,361 Value ($000) $36 Avg Close — Range —
Q4 2023
Shares 6,926,174 Value ($000) $11 Avg Close — Range —
Q3 2023
Shares 7,454,703 Value ($000) $28 Avg Close — Range —
Q2 2023
Shares 7,494,184 Value ($000) $41 Avg Close — Range —
Q1 2023
Shares 7,644,195 Value ($000) $33 Avg Close — Range —
Q4 2022
Shares 7,261,046 Value ($000) $29 Avg Close — Range —
Q3 2022
Shares 7,395,573 Value ($000) $39,272 Avg Close — Range —
Q2 2022
Shares 8,931,613 Value ($000) $58,591 Avg Close — Range —
Q1 2022
Shares 8,763,691 Value ($000) $64,325 Avg Close — Range —
Q4 2021
Shares 8,647,121 Value ($000) $61,222 Avg Close — Range —
Q3 2021
Shares 8,628,216 Value ($000) $216,309 Avg Close — Range —
Q2 2021
Shares 7,363,115 Value ($000) $198,068 Avg Close — Range —
Q1 2021
Shares 6,484,544 Value ($000) $184,550 Avg Close — Range —
Q4 2020
Shares 4,394,184 Value ($000) $124,575 Avg Close — Range —
Q3 2020
Shares 4,320,962 Value ($000) $128,866 Avg Close — Range —
Q2 2020
Shares 4,181,178 Value ($000) $84,615 Avg Close — Range —