The sales and derivative exercises appear routine (option vesting followed by same-day sales), and the dollar value is immaterial relative to CYTK's $10.6B market cap. The cluster of two C-suite officers selling at similar price levels is notable but not alarming absent material corporate events. Monitor next 8-K or press release for any product or regulatory news that might have prompted coordinated selling; otherwise, these trades are consistent with normal portfolio diversification.
Price Chart
Executive Summary
Two C-suite executives (CFO and CCO) sold a combined $1.38M in open-market shares following option exercises, with the CCO's sale ($1.29M) being the bulk. The trades occur at elevated stock prices near $85-88 and are coupled with routine derivative exercises, suggesting tax-planning or liquidity-driven selling rather than a bearish signal. However, the cluster of two top officers selling simultaneously warrants attention, though the total value is only ~0.013% of the $10.6B market cap — trivial by proportionality standards.
Key Financial Metrics
Key Facts
- CCO Andrew Callos sold 15,000 shares at $85.80 for $1.29M after exercising options at $23.26/share
- CFO Sung Lee sold 1,112 shares at $87.79 for $98K after option exercises; also sold 3,134 shares at $85 on June 29 for $266K
- Total open-market sales: ~$1.38M — approximately 0.013% of $10.6B market cap
- All derivative exercises (M) are non-cash or small-dollar conversions; combined $0 taxable option exercise proceeds
- No open-market purchases in the cluster; net direction is selling
Financial Impact
Total insider sales of ~$1.38M, representing ~0.013% of market cap — well below 0.1% proportionality threshold for material concern
Risk Factors
- If the same officers accelerate selling in larger amounts without a disclosed 10b5-1 plan, it could signal reduced confidence
- The stock trades near $85 — if this is near a peak, further insider selling may increase
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-CYTK-1783027190132 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 15, 2026 17d ago | Insider Cluster | $69.31 $67.59 | ▲ +2.48% | ▲ +4.59% | $65.60 (+5.35%) |
Sep 11, 2026 20d ago | Insider Cluster | $72.45 $67.56 | ▼ −6.75% | ▼ −6.86% | $65.60 (−9.45%) |
Sep 1, 2026 4w ago | Insider Cluster | $71.40 $74.11 | ▲ +3.80% | ▲ +3.71% | $65.60 (−8.12%) |
Aug 31, 2026 4w ago | Insider Cluster | $71.40 $74.11 | ▲ +3.80% | ▲ +3.71% | $65.60 (−8.12%) |
Aug 29, 2026 4w ago | Press Release | $70.91 $75.35 | ▲ +6.26% | ▲ +6.40% | $65.60 (−7.49%) |
Aug 28, 2026 5w ago | 8-K | $72.09 $72.72 | ▲ +0.87% | ▲ +0.76% | $65.60 (−9.00%) |
Jul 30, 2026 9w ago | Insider Cluster | $80.42 $81.37 | ▲ +1.18% | ▼ −2.44% | $65.60 (−18.43%) |
Jul 27, 2026 9w ago | Insider Cluster | $80.62 $77.13 | ▼ −4.33% | ▼ −5.40% | $65.60 (−18.63%) |
Jul 23, 2026 10w ago | Press Release | $80.74 $80.42 | ▼ −0.40% | ▼ −0.77% | $65.60 (−18.75%) |
Jul 14, 2026 11w ago | Insider Cluster | $81.93 $79.11 | ▼ −3.44% | ▼ −2.15% | $65.60 (−19.93%) |
US Market Status
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