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GRAY MICHAEL 4

Accession 0000950170-25-016469

CIK 0002022626other

View on SEC.gov Company Profile

Filed

Feb 6, 7:00 PM ET

Accepted

Feb 7, 5:31 PM ET

Size

11.2 KB

Accession

0000950170-25-016469

Insider Transaction Report

Form 4

Period: 2025-02-06

Upstream Bio, Inc.UPB

CFO and COO

Transactions

Award
Stock Option (Right to Buy)
2025-02-06+195,000→ 195,000 total
Exercise: $8.53Exp: 2035-02-05→ Common Stock (195,000 underlying)

Footnotes (1)

[F1]The shares underlying this option shall vest in forty-eight equal monthly installments following February 6, 2025, subject to the Reporting Person's continued service on each such vesting date.

Documents

2 files

Issuer

Upstream Bio, Inc.

CIK 0002022626

Entity typeother

Related Parties

1

filerCIK 0001271411

Filing Metadata

Form type: 4
Filed: Feb 6, 7:00 PM ET
Accepted: Feb 7, 5:31 PM ET
Size: 11.2 KB

View on SEC.gov