Monitor for additional insider selling in the coming weeks; while this cluster is small in dollar value, the participation of the CEO and C-suite executives warrants attention ahead of upcoming earnings or clinical trial updates.
Price Chart
Executive Summary
Three corporate insiders at Upstream Bio, Inc. (UPB) sold shares in a coordinated open-market transaction on March 16, 2026, including the CEO and Chief Business Officer. The total value of the sales was approximately $30,350, representing a small but notable insider selling cluster.
Key Financial Metrics
Key Facts
- Chief Executive Officer Sutherland Everett Rand sold 2,093 shares for $19,443.97.
- Chief Business Officer Adam Houghton sold 699 shares for $6,493.71.
- General Counsel Allison Ambrose sold 475 shares for $4,412.75.
- All transactions occurred on the same day (2026-03-16) in the open market at $9.29 per share.
- Total value of insider sales: $30,350.53.
Financial Impact
$30,350 in open-market share sales by insiders
Risk Factors
- Potential perception of lack of confidence if no offsetting buy activity follows.
- Risk of negative sentiment if future filings reveal larger-scale selling or downward revisions to company outlook.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (3 trades, 7d window) | cluster-UPB-1773781280101 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 1, 2026 8w ago | 8-K | $6.55 | awaiting T+60 | — | $2.79 (−57.40%) |
Aug 11, 2026 11w ago | 8-K | $7.44 | awaiting T+60 | — | $2.79 (−62.50%) |
Jun 17, 2026 18w ago | Insider Cluster | $6.25 | awaiting T+60 | — | $2.79 (−55.36%) |
Jun 14, 2026 19w ago | Press Release | $6.10 $5.96 | ▼ −2.30% | ▼ −3.30% | $2.79 (−54.26%) |
May 18, 2026 23w ago | Press Release | $8.51 $6.91 | ▼ −18.80% | ▼ −23.65% | $2.79 (−67.22%) |
May 13, 2026 23w ago | Press Release | $9.36 $7.25 | ▲ +22.54% | ▲ +26.98% | $2.79 (+70.19%) |
Apr 17, 2026 27w ago | Press Release | $9.99 $7.14 | ▼ −28.53% | ▼ −34.67% | $2.79 (−72.07%) |
Mar 26, 2026 30w ago | 424B5 | $8.67 $6.41 | ▲ +26.07% | ▲ +42.13% | $2.79 (+67.82%) |
Mar 26, 2026 30w ago | Press Release | $9.79 $6.40 | ▼ −34.68% | ▼ −48.63% | $2.79 (−71.50%) |
Mar 16, 2026 32w ago | Insider Cluster | $9.61 $6.45 | ▼ −32.88% | ▼ −43.37% | $2.79 (−70.97%) |
US Market Status
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