The 10b5-1 plan removes timing suspicion — this is a scheduled monetization of option exercises, not a conviction sell signal. The filing is routine for an insider with large equity grants. Monitor for any filings that accelerate or expand the plan, but no trading action warranted on this notice alone.
Price Chart
Executive Summary
Margaret A. Horn, an officer at Revolution Medicines, filed a Form 144 to sell 90,000 common shares (~$13.85M at filing price). The sale is pursuant to a Rule 10b5-1 plan, with shares acquired upon exercise of stock options. The advance notice signals planned monetization of equity compensation, not an opportunistic sale.
Key Facts
- Insider: Margaret A. Horn (Officer)
- Shares proposed for sale: 90,000 common shares
- Estimated value: approx. $13.85 million ($153.87 per share)
- Sale plan: Rule 10b5-1 trading arrangement adopted March 12, 2026
- Prior sale on June 11, 2026: 10,000 shares for ~$1.48M
- Prior sale on March 17, 2026: 4,583 shares for ~$455.9K
- Shares are from option exercises — not open-market holdings
Financial Impact
Proposed sale of $13.85M (0.04% of $32.7B market cap). Minimal dilution/supply impact.
Risk Factors
- If subsequent open-market sales accelerate beyond the plan, it could signal insider caution
- Insider has already sold ~$1.9M in June 2026 under the plan, consistent with routine diversification
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-006148 |
| Document: 0001950047-26-006148-index.html | 0001950047-26-006148 |
| Document: 0001950047-26-006148.txt | 0001950047-26-006148 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 15, 2026 16d ago | 144 | $195.92 $190.74 | ▼ −2.64% | ▼ −5.21% | $206.54 (+5.42%) |
Sep 15, 2026 16d ago | 144 | $195.92 $190.74 | ▼ −2.64% | ▼ −5.21% | $206.54 (+5.42%) |
Sep 15, 2026 17d ago | Insider Cluster | $204.86 $190.95 | ▼ −6.79% | ▼ −7.61% | $206.54 (+0.82%) |
Sep 14, 2026 17d ago | Insider Cluster | $204.86 $192.86 | ▼ −5.86% | ▼ −7.98% | $206.54 (+0.82%) |
Aug 26, 2026 5w ago | 8-K | $215.44 $209.23 | ▼ −2.88% | ▼ −2.76% | $206.54 (−4.13%) |
Aug 26, 2026 5w ago | Press Release | $215.44 $209.23 | ▼ −2.88% | ▼ −2.76% | $206.54 (−4.13%) |
Aug 25, 2026 5w ago | Insider Cluster | $211.38 $209.87 | ▼ −0.71% | ▼ −0.18% | $206.54 (−2.29%) |
Jul 2, 2026 13w ago | Press Release | $189.24 $191.13 | ▲ +1.00% | ▲ +0.07% | $206.54 (+9.14%) |
Jul 1, 2026 13w ago | Insider Cluster | $187.51 $190.46 | ▲ +1.57% | ▲ +1.31% | $206.54 (+10.15%) |
Jun 22, 2026 14w ago | 8-K | $165.81 $192.62 | ▲ +16.17% | ▲ +16.62% | $206.54 (+24.56%) |
US Market Status
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