4//SEC Filing
Deykin Aaron 4
Accession 0001193125-26-004757
CIK 0002022626other
Filed
Jan 5, 7:00 PM ET
Accepted
Jan 6, 5:15 PM ET
Size
7.3 KB
Accession
0001193125-26-004757
Insider Transaction Report
Form 4
Deykin Aaron
Chief Medical Officer
Transactions
- Award
Common Stock
2026-01-02+32,000→ 33,581 total - Award
Stock Option (Right to Buy)
2026-01-02+96,000→ 96,000 totalExercise: $27.07Exp: 2036-01-01→ Common Stock (96,000 underlying)
Footnotes (3)
- [F1]Represents restricted stock units ("RSUs") granted pursuant to the Issuer's 2024 Stock Option and Incentive Plan. Each RSU represents the contingent right to receive one share of the Issuer's Common Stock upon vesting. The RSUs shall vest in sixteen equal quarterly installments following January 1, 2026, subject to the Reporting Person's continued service on each such vesting date.
- [F2]Includes 1,581 shares of Common Stock previously acquired under the Issuer's 2024 Employee Stock Purchase Plan.
- [F3]The shares underlying this option shall vest in forty-eight equal monthly installments following January 1, 2026, subject to the Reporting Person's continued service on each such vesting date.
Documents
Issuer
Upstream Bio, Inc.
CIK 0002022626
Entity typeother
Related Parties
1- filerCIK 0002031693
Filing Metadata
- Form type
- 4
- Filed
- Jan 5, 7:00 PM ET
- Accepted
- Jan 6, 5:15 PM ET
- Size
- 7.3 KB