The cluster of open-market sales by the CTO and a director, without 10b5-1 plans, signals potential near-term headwinds. Monitor for upcoming earnings or material news that may have prompted the selling. The absence of any insider buying reinforces the bearish read.
Price Chart
Executive Summary
Three BillionToOne insiders sold a total of $1.97M in open-market sales over a 7-day window, including the CTO ($1.0M) and a director ($830K). The sales represent ~0.6% of market cap, a notable but not alarming level. No 10b5-1 plan is indicated, and the cluster is not offset by any insider purchases, suggesting a bearish signal from senior leadership.
Key Financial Metrics
Key Facts
- Total insider sales of $1.97M over 7 days (0.6% of market cap)
- CTO Tsao David sold 10,000 shares for $1.0M on 2026-09-09
- Director Lynch Thomas P. sold 8,300 shares for $830K on 2026-09-08
- SVP ten Bosch John Roderick sold 1,400 shares for $138K on 2026-09-09
- No 10b5-1 plan indicated for any sale
- One non-cash gift of 3,500 shares by CPO Sakakibara Shan Riku on 2026-09-10 (value $0)
Financial Impact
Insider sales of $1.97M represent ~0.6% of market cap, a modest but material cluster with no offsetting purchases.
Risk Factors
- Insider sales may be liquidity-driven despite lack of 10b5-1 plans
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-BLLN-1789598666899 |
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
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers