UPSTREAM BIO INC

Ticker: UPB CUSIP: 91678A107 Class: Common Stock

JENNISON ASSOCIATES LLC's Holding History (CIK: 0000053417)

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

Q4 2025

Shares 288,847 Value ($000) $7,842 Avg Close $24.89 Range $18.05 - $33.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	288,847	$7,842	$24.89	$18.05 - $33.00