Allison Ambrose

Insider Reports History

Location
Waltham, MA
Signature
/s/ Allison Ambrose
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Allison Ambrose:

Company Role Class Num Shares Value Price $ Report Date Ownership
Upstream Bio, Inc. General Counsel Common Stock 17,000 $461,550 $27.15 02 Jan 2026 Direct
Upstream Bio, Inc. General Counsel Stock Option (Right to Buy) 51,000 02 Jan 2026 Direct

Insider Reports Filed by Allison Ambrose

Symbol Company Period Transactions Value $ Form Type Role Filing Time
UPB Upstream Bio, Inc. 02 Jan 2026 2 $0 4 General Counsel 06 Jan 2026, 17:15
UPB Upstream Bio, Inc. 06 Feb 2025 1 $0 4 General Counsel 07 Feb 2025, 17:25
UPB Upstream Bio, Inc. 16 Dec 2024 1 $0 4 General Counsel 17 Dec 2024, 16:18
UPB Upstream Bio, Inc. 16 Dec 2024 0 $0 3 General Counsel 17 Dec 2024, 16:15