UPB insider trading — Upstream Bio, Inc.
Over the last 90 days, insiders at Upstream Bio, Inc. (UPB) made 0 open-market purchases worth $0 and 5 open-market sales worth $28K, making them net sellers by $28K. The largest sale was by Sutherland Everett Rand (Chief Executive Officer), who sold 2,095 shares for $12K on Sep 16, 2026.
Updated Oct 16, 2026.
Recent UPB insider transactions
Every Form 4 filed by Upstream Bio, Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | Gray Michael | CFO and COO | S · Sale | Direct | 853 | $5.49 | $5K | Form 4 |
| Sep 16, 2026 | Sutherland Everett Rand | Chief Executive Officer | S · Sale | Direct | 2,095 | $5.49 | $12K | Form 4 |
| Sep 16, 2026 | Houghton Adam | Chief Business Officer | S · Sale | Direct | 700 | $5.49 | $4K | Form 4 |
| Sep 16, 2026 | Ambrose Allison | General Counsel | S · Sale | Direct | 485 | $5.49 | $3K | Form 4 |
| Sep 16, 2026 | Deykin Aaron | Chief Medical Officer | S · Sale | Direct | 895 | $5.49 | $5K | Form 4 |
UPB insider trading FAQ
Are insiders buying UPB stock?
Not on the open market. In the last 90 days, Upstream Bio, Inc. insiders made no open-market purchases, and 5 open-market sales totaling $28K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading UPB?
Recent sellers: Ambrose Allison, Deykin Aaron, Gray Michael, Houghton Adam, Sutherland Everett Rand.
Where does UPB insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.