Y-MABS THERAPEUTICS INC

CUSIP: 984241109 Class: Common Stock

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q1 2021
Shares 7,304 Value ($000) $222 Avg Close — Range —
Q4 2020
Shares 7,704 Value ($000) $382 Avg Close — Range —
Q3 2020
Shares 20,004 Value ($000) $769 Avg Close — Range —
Q2 2020
Shares 44,904 Value ($000) $1,941 Avg Close — Range —