This insider cluster is too small in dollar terms to warrant a trading signal. Monitor for any material insider buying (C-suite open-market purchases) or a significant increase in selling volume (>0.5% of market cap) before adjusting positioning. The stock's 81% analyst bullish consensus and strong institutional ownership suggest no near-term catalyst from insider activity.
Price Chart
Executive Summary
Two insiders at PTC Therapeutics sold a total of $459K in open-market sales over a 7-day window. Director Michael Schmertzler sold $389K and EVP/CLO Mark Boulding sold $71K, with Boulding also exercising options. The total value is only ~0.008% of PTCT's $5.9B market cap, making this a trivial cluster by proportionality standards. The sales are routine and non-informative — no bearish signal from this activity.
Key Financial Metrics
Key Facts
- Two insiders sold a combined $459K in open-market sales over 7 days
- Director Michael Schmertzler sold $389K across multiple trades at ~$72
- EVP/CLO Mark Boulding sold $71K after exercising options at $25.69
- Total sales represent ~0.008% of PTCT's $5.9B market cap — trivial
- No C-suite cluster buys or material insider conviction signal present
Financial Impact
Total insider sales of $459K, or ~0.008% of market cap — immaterial
Risk Factors
- Insider selling could accelerate if management becomes less confident ahead of upcoming events
- The cluster is too small to be predictive — false signal risk if extrapolated
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-PTCT-1787378564222 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 21, 2026 6w ago | Insider Cluster | $69.82 $65.26 | ▼ −6.53% | ▼ −6.00% | $63.46 (−9.11%) |
Jul 16, 2026 11w ago | Press Release | $78.52 $71.97 | ▲ +8.34% | ▲ +11.96% | $63.46 (+19.18%) |
Jul 16, 2026 11w ago | Insider Cluster | $78.52 $71.97 | ▼ −8.34% | ▼ −11.96% | $63.46 (−19.18%) |
Jul 13, 2026 11w ago | Insider Cluster | $81.33 $74.63 | ▼ −8.24% | ▼ −11.42% | $63.46 (−21.97%) |
Jul 8, 2026 12w ago | Insider Cluster | $88.57 $69.21 | ▼ −21.86% | ▼ −25.13% | $63.46 (−28.35%) |
Jun 26, 2026 13w ago | Insider Cluster | $81.57 $76.82 | ▼ −5.82% | ▼ −5.54% | $63.46 (−22.20%) |
Jun 16, 2026 15w ago | 8-K | $73.27 $78.06 | ▲ +6.54% | ▲ +6.34% | $63.46 (−13.39%) |
Jun 9, 2026 16w ago | 8-K | $73.35 $89.55 | ▲ +22.09% | ▲ +18.46% | $63.46 (−13.48%) |
May 19, 2026 19w ago | Insider Cluster | $71.02 $78.98 | ▲ +11.21% | ▲ +10.47% | $63.46 (−10.64%) |
May 15, 2026 19w ago | Insider Cluster | $70.15 $73.27 | ▲ +4.45% | ▲ +2.87% | $63.46 (−9.54%) |
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.
Try SecBot Free Coming soon: SecBot Pro with alerts, watchlists, and API access