Over the last 12 months, Upstream Bio insiders reported no purchases and 5 sales totaling $31K across SEC Form 4 filings.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Jun 16, 2026 | GRAY MICHAELCFO and COO · O | ▼ Sale | 853 | $6.1 | $5K | -2.9% | — |
| Jun 16, 2026 | Sutherland Everett RandChief Executive Officer · O·D | ▼ Sale | 2,095 | $6.1 | $13K | -2.9% | — |
| Jun 16, 2026 | Houghton AdamChief Business Officer · O | ▼ Sale | 700 | $6.1 | $4K | -2.9% | — |
| Jun 16, 2026 | Deykin AaronChief Medical Officer · O | ▼ Sale | 895 | $6.1 | $5K | -2.6% | — |
| Jun 16, 2026 | Ambrose AllisonGeneral Counsel · O | ▼ Sale | 477 | $6.1 | $3K | -2.9% | — |
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $UPB feed.