Ambrose Allison insider trades
Ambrose Allison has filed 6 Form 4s with the SEC that we hold, all for Upstream Bio, Inc. (UPB), as General Counsel. Across all of them we count 0 purchases worth $0 and 3 sales worth $10.0K reported on Form 4. In the last 12 months: 0 purchases ($0) and 3 sales ($10.0K). The largest single trade was a sale of 475 shares of Upstream Bio, Inc. worth $4.4K, dated 2026-03-16. Of 1 sale filed since we began reading the 10b5-1 checkbox, 0 (0%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2024-12-17 and the latest 2026-09-17.
Upstream Bio, Inc. (UPB)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2026-03-16 | S, sale reported on Form 4 | 475 | $4.4K | 2026-03-17 |
| 2026-06-16 | S, sale reported on Form 4 | 477 | $2.9K | 2026-06-17 |
| 2026-09-16 | S, sale reported on Form 4 | 485 | $2.7K | 2026-09-17 |
Counted from the Form 4 filings this reporting owner (SEC CIK 2047381) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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