Y-MABS THERAPEUTICS INC

CUSIP: 984241109 Class: Common Stock

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

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

Q2 2025
Shares 17,211 Value ($000) $0 Avg Close — Range —
Q1 2025
Shares 17,211 Value ($000) $0 Avg Close — Range —
Q4 2024
Shares 14,067 Value ($000) $0 Avg Close — Range —
Q3 2024
Shares 22,537 Value ($000) $0 Avg Close — Range —
Q2 2024
Shares 22,279 Value ($000) $0 Avg Close — Range —
Q1 2024
Shares 21,158 Value ($000) $0 Avg Close — Range —
Q4 2023
Shares 19,501 Value ($000) $0 Avg Close — Range —
Q3 2023
Shares 18,282 Value ($000) $0 Avg Close — Range —
Q2 2023
Shares 18,282 Value ($000) $0 Avg Close — Range —
Q1 2023
Shares 24,723 Value ($000) $0 Avg Close — Range —
Q4 2022
Shares 17,623 Value ($000) $0 Avg Close — Range —
Q3 2022
Shares 16,708 Value ($000) $241 Avg Close — Range —
Q2 2022
Shares 14,423 Value ($000) $218 Avg Close — Range —
Q1 2022
Shares 14,165 Value ($000) $168 Avg Close — Range —
Q3 2019
Shares 837,800 Value ($000) $21,833 Avg Close — Range —
Q2 2019
Shares 748,351 Value ($000) $17,115 Avg Close — Range —
Q1 2019
Shares 640,297 Value ($000) $16,782 Avg Close — Range —
Q4 2018
Shares 389,497 Value ($000) $7,922 Avg Close — Range —
Q3 2018
Shares 389,400 Value ($000) $10,342 Avg Close — Range —