Summary
Updated Aug 31, 2026
Allison Ambrose is General Counsel of Upstream Bio, Inc. (UPB). 4 SEC Form 4 filings on record going back to 2024, most recently on 17 June 2026. Most recent open-market trade: sold $3K of UPB on 17 June 2026. Lifetime open-market sales: $7K.
Recent Transactions
3Every recent SEC Form 4 transaction Allison Ambrose has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Allison Ambrose files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Everett Rand Sutherland - $32K of UPB open-market activity in the last 12 months
- Aaron Deykin - $14K of UPB open-market activity in the last 12 months
- Michael Gray - $13K of UPB open-market activity in the last 12 months
- Adam Houghton - $11K of UPB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Allison Ambrose?
Allison Ambrose is a corporate insider, tracked as General Counsel of Upstream Bio, Inc. (UPB). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Allison Ambrose submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Allison Ambrose been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($7K) across all tracked filings.
Where can I see all of Allison Ambrose's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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