Y-MABS THERAPEUTICS INC

CUSIP: 984241109 Class: Common Stock

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q4 2021
Shares 1,581,845 Value ($000) $25,642 Avg Close — Range —
Q3 2021
Shares 1,688,556 Value ($000) $48,191 Avg Close — Range —
Q2 2021
Shares 1,318,279 Value ($000) $44,558 Avg Close — Range —
Q1 2021
Shares 1,317,900 Value ($000) $39,853 Avg Close — Range —
Q4 2020
Shares 1,047,416 Value ($000) $51,858 Avg Close — Range —
Q3 2020
Shares 725,628 Value ($000) $27,857 Avg Close — Range —
Q2 2020
Shares 626,266 Value ($000) $27,055 Avg Close — Range —
Q1 2020
Shares 546,640 Value ($000) $14,267 Avg Close — Range —