The concentrated insider selling by a founder/director is a bearish signal. Traders should watch for further insider filings and consider reducing exposure or hedging ahead of potential negative catalysts. The pattern suggests possible near-term downside pressure.
Price Chart
Executive Summary
Director and founder Jonathan Rothberg filed a Form 144 to sell 1,730,319 shares of Butterfly Network (BFLY) valued at approximately $12.67 million, with an additional 815,632 shares sold the prior day. This represents a substantial insider selling cluster totaling ~$18.96 million over two days, a strong bearish signal from a key insider.
Key Facts
- Director Jonathan Rothberg filed Form 144 to sell 1,730,319 Class A common shares (~$12.67M) on July 15, 2026.
- Rothberg also sold 815,632 shares (~$6.29M) on July 14, 2026, per the filing.
- Total insider sales over two days: ~2.55M shares worth ~$18.96M.
- Prior 30-day insider activity totaled only $2.7M in 4 sells, making this a significant escalation.
- Market cap is ~$2.0B; the proposed sale represents ~0.73% of shares outstanding.
Financial Impact
Insider selling of ~$18.96M over two days, with the Form 144 covering $12.67M alone.
Risk Factors
- Insider may not complete the sale, but the intent is clear and the prior day's sale confirms execution.
- Company fundamentals or upcoming news are not disclosed; the sale could be for personal diversification, but the size and timing are concerning.
- High analyst bullishness (91%) may conflict with insider behavior, creating potential for negative surprise.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001974158-26-000082 |
| Document: 0001974158-26-000082-index.html | 0001974158-26-000082 |
| Document: 0001974158-26-000082.txt | 0001974158-26-000082 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 15, 2026 11d ago | 3 | $7.25 $7.47 | ▲ +3.03% | ▲ +2.61% | $7.13 (−1.72%) |
Oct 6, 2026 20d ago | 144 | $8.70 $8.27 | ▼ −4.94% | ▼ −4.70% | $7.13 (−18.10%) |
Oct 5, 2026 22d ago | 8-K | $9.38 $8.70 | ▼ −7.25% | ▼ −7.80% | $7.13 (−24.04%) |
Sep 23, 2026 4w ago | 144 | $9.41 $9.39 | ▼ −0.21% | ▼ −0.76% | $7.13 (−24.28%) |
Sep 22, 2026 4w ago | 144 | $9.20 $9.41 | ▲ +2.28% | ▲ +2.36% | $7.13 (−22.55%) |
Sep 9, 2026 6w ago | Insider Cluster | $7.12 $7.33 | ▲ +2.95% | ▲ +2.10% | $7.13 (+0.07%) |
Aug 17, 2026 10w ago | Insider Cluster | $9.00 $9.17 | ▼ −1.89% | ▼ −1.68% | $7.13 (+20.83%) |
Aug 17, 2026 10w ago | Insider Cluster | $9.00 $9.17 | ▼ −1.89% | ▼ −1.68% | $7.13 (+20.83%) |
Aug 15, 2026 10w ago | Institutional Cluster | $9.02 $9.00 | ▼ −0.22% | ▲ +0.45% | $7.13 (−21.01%) |
Aug 12, 2026 10w ago | Insider Cluster | $8.86 $8.84 | ▼ −0.23% | ▼ −0.03% | $7.13 (−19.58%) |
US Market Status
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