The insider sales are too small relative to market cap to carry informational content. The CTO's sale is likely a routine cash-out following option exercise. Monitor for any upcoming earnings or material agreements that could trigger a larger insider move, but this cluster alone does not warrant action.
Price Chart
Executive Summary
Two insiders at BillionToOne sold a combined $1.14M in open-market transactions on August 25, 2026, including the CTO selling $1M and the SVP of Lab Operations selling $142K. The CTO also exercised options at $2.80/share, indicating a tax-motivated cash-out. Director Kolluri executed only non-cash transactions ($0 value). At a $4.5B market cap, the total open-market sales represent ~0.025% of market cap — well below the 0.1% materiality threshold — making this a routine, non-informational cluster.
Key Financial Metrics
Key Facts
- CTO David Tsao sold 10,000 shares for $1M on 8/25/26, simultaneously exercising options at $2.80/share
- SVP of Lab Operations John ten Bosch sold 1,417 shares for $142K on 8/25/26
- Director Krishna Kittu Kolluri executed 12 non-cash transactions totaling 513,476 shares at $0 on 8/26/26
- Total open-market sales of $1.14M represent ~0.025% of BLLN's $4.5B market cap
- No C-suite (CEO/CFO) participation in the cluster
Financial Impact
Open-market sales of $1.14M represent 0.025% of market cap — trivial
Risk Factors
- Insider sales could accelerate if the stock continues to trade near $100
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-BLLN-1787983389117 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 30, 2026 26d ago | Insider Cluster | $105.76 | awaiting T+60 | — | $114.07 (−7.86%) |
Sep 28, 2026 29d ago | Insider Cluster | $118.18 | awaiting T+60 | — | $114.07 (+3.48%) |
Sep 23, 2026 4w ago | Insider Cluster | $124.90 | awaiting T+60 | — | $114.07 (+8.67%) |
Sep 22, 2026 5w ago | Institutional Cluster | $116.07 | awaiting T+60 | — | $114.07 (−1.72%) |
Sep 21, 2026 5w ago | Insider Cluster | $116.07 | awaiting T+60 | — | $114.07 (+1.72%) |
Sep 16, 2026 5w ago | Insider Cluster | $110.67 | awaiting T+60 | — | $114.07 (−3.07%) |
Sep 11, 2026 6w ago | Insider Cluster | $100.82 | awaiting T+60 | — | $114.07 (+13.14%) |
Sep 11, 2026 6w ago | Insider Cluster | $100.82 | awaiting T+60 | — | $114.07 (+13.14%) |
Aug 27, 2026 8w ago | Insider Cluster | $93.24 | awaiting T+60 | — | $114.07 (+22.34%) |
Aug 27, 2026 8w ago | Insider Cluster | $93.24 | awaiting T+60 | — | $114.07 (+22.34%) |
US Market Status
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