Y-MABS THERAPEUTICS INC

CUSIP: 984241109 Class: Common Stock

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q4 2019
Shares 138,514 Value ($000) $4,329 Avg Close — Range —
Q3 2019
Shares 102,800 Value ($000) $2,679 Avg Close — Range —
Q2 2019
Shares 102,800 Value ($000) $2,351 Avg Close — Range —
Q1 2019
Shares 102,800 Value ($000) $2,694 Avg Close — Range —
Q4 2018
Shares 102,800 Value ($000) $2,091 Avg Close — Range —
Q3 2018
Shares 150,000 Value ($000) $3,984 Avg Close — Range —