Timing
Purchase and sale flow
PurchasesSales
Stock, pipeline and biotech catalyst intelligence
Reported ownership activity
Activity signal
No open-market purchases versus $77.2K in reported salesOption exercises, awards, and grants are separated from open-market direction.Timing
Composition
Concentration
Company profile
Upstream Bio, Inc., a clinical-stage biotechnology company, develops treatments for inflammatory diseases focusing on severe respiratory disorders. It offers verekitug, which is in Phase 2 trials for the treatment of severe asthma and chronic rhinosinusitis with nasal polyps and chronic obstructive pulmonary disease and in Phase I clinical trial for treating chronic obstructive pulmonary disease. The company was incorporated in 2021 and is headquartered in Waltham, Massachusetts.
Company profile supplied by Yahoo Finance. Catalyst dates can change and should be confirmed against the linked primary source.
Page updated Aug 21, 2026 · Yahoo quotes cached for one minute; reference data may be used when a live field is unavailable.
| Insider trading | Relationship | Date | Transaction | Cost | Shares | Value | Shares total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| Gray Michael | CFO and COO | Jun 16 '26 | Sale | $6.10 | 853 | $5,203 | 28,795 | Jun 17 04:05 PM |
| Sutherland Everett Rand | Chief Executive Officer | Jun 16 '26 | Sale | $6.10 | 2,095 | $12,780 | 70,812 | Jun 17 04:05 PM |
| Houghton Adam | Chief Business Officer | Jun 16 '26 | Sale | $6.10 | 700 | $4,270 | 23,601 | Jun 17 04:05 PM |
Transactions may include sales, purchases, grants, and option exercises. Directional charts count only purchases and sales; follow the Form 4 link to verify the original SEC filing.