UPSTREAM BIO INC

Ticker: UPB CUSIP: 91678A107 Class: Common Stock

BALYASNY ASSET MANAGEMENT L.P.'s Holding History (CIK: 0001218710)

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

Q3 2025

Shares 73,131 Value ($000) $1,376 Avg Close $15.54 Range $10.54 - $21.03

Q4 2024

Shares 301,152 Value ($000) $4,951 Avg Close $22.33 Range $14.97 - $29.46

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	73,131	$1,376	$15.54	$10.54 - $21.03
Q4 2024	301,152	$4,951	$22.33	$14.97 - $29.46