Y-MABS THERAPEUTICS INC

CUSIP: 984241109 Class: Common Stock

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q4 2020
Shares 5,685 Value ($000) $281 Avg Close — Range —
Q3 2020
Shares 5,221 Value ($000) $200 Avg Close — Range —
Q2 2020
Shares 5,014 Value ($000) $217 Avg Close — Range —