4//SEC Filing
Ratcliffe Liam 4
Accession 0000950170-25-085370
CIK 0002022626other
Filed
Jun 11, 8:00 PM ET
Accepted
Jun 12, 4:17 PM ET
Size
13.4 KB
Accession
0000950170-25-085370
Insider Transaction Report
Form 4
Ratcliffe Liam
Director
Transactions
- Award
Stock Option (Right to Buy)
2025-06-10+17,096→ 17,096 totalExercise: $11.59Exp: 2035-06-09→ Common Stock (17,096 underlying)
Footnotes (1)
- [F1]The shares underlying this option shall vest upon the earlier of (i) June 10, 2026 and (ii) the date of the next Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continued service on such vesting date.
Documents
Issuer
Upstream Bio, Inc.
CIK 0002022626
Entity typeother
Related Parties
1- filerCIK 0001547100
Filing Metadata
- Form type
- 4
- Filed
- Jun 11, 8:00 PM ET
- Accepted
- Jun 12, 4:17 PM ET
- Size
- 13.4 KB