UPSTREAM BIO INC

Ticker: UPB CUSIP: 91678A107 Class: Common Stock

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2025
Shares 19,636 Value ($000) $1 Avg Close $24.89 Range $18.05 - $33.00
Q3 2025
Shares 18,501 Value ($000) $0 Avg Close $15.54 Range $10.54 - $21.03
Q2 2025
Shares 17,448 Value ($000) $0 Avg Close $9.24 Range $5.14 - $12.10