Allison Ambrose insider trades: Upstream Bio (UPB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Allison reports to the SEC
Open-market buys and sales
3 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | UPB | ↓ Sell | 485 | $5.49 | $3K | Direct | Sep 17, 2026 (1d) |
| Jun 16, 2026 | UPB | ↓ Sell | 477 | $6.10 | $3K | Direct | Jun 17, 2026 (1d) |
| Mar 16, 2026 | UPB | ↓ Sell | 475 | $9.29 | $4K | Direct | Mar 17, 2026 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other UPB insiders
Open-market trades in the last 12 months
About Allison Ambrose's insider trades
Allison Ambrose is General Counsel at Upstream Bio (UPB). Since Mar 16, 2026, Allison has reported no open-market purchases and 3 sales worth $10K on SEC Form 4. In the last 12 months: 3 sales ($10K).
Their filings also include grants and awards (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every UPB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.