The CEO's $9M open-market buy is a rare and strong insider signal that may indicate management views the post-guidance-cut selloff as overdone. However, the historical calibration shows BSX insider cluster reports have a poor track record (avg T+20 alpha -8.57%), and the total dollar amount is tiny relative to market cap. Traders should watch for additional insider buying or a company announcement to confirm the signal before acting.
Price Chart
Executive Summary
A cluster of insider buying at Boston Scientific, led by CEO Michael Mahoney's $9.0M open-market purchase, follows the company's Q2 2026 earnings beat but significantly lowered full-year guidance. The buying is concentrated in the days after the earnings release, suggesting insiders view the post-guidance-cut stock price as undervalued. The total insider buying of $9.33M represents a negligible ~0.013% of the $71.4B market cap, but the CEO's personal $9M purchase is a strong conviction signal that partially offsets the bearish earnings context.
Key Financial Metrics
Key Facts
- CEO Michael Mahoney purchased 186,240 shares for $9.0M in an open-market transaction on 2026-08-03.
- Total insider buying cluster of $9.33M from 3 insiders over a 7-day window.
- Director David Habiger made three small open-market purchases totaling ~$157K.
- The buying follows a Q2 2026 earnings beat (EPS $0.86 vs. $0.83 consensus) but a significant guidance cut (organic growth to 5-6% from 6.5-8%, EPS to $3.28-$3.32 from $3.34-$3.41).
- The $9.33M total buying is ~0.013% of BSX's $71.4B market cap, which is trivial by proportionality standards, but the CEO's $9M personal outlay is a notable signal.
Financial Impact
CEO personally deployed $9.0M of his own capital at ~$48.33/share, representing a strong vote of confidence in the company's valuation post-guidance-cut.
Risk Factors
- The guidance cut signals a material deceleration in the core business that may not be fully priced in.
- The $9.33M buying is only 0.013% of market cap, making it statistically trivial by proportionality standards.
- Historical BSX insider cluster reports have a negative average alpha at T+20, suggesting this pattern has not been predictive for this stock.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-BSX-1786165810451 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 31, 2026 4w ago | Court Ruling | $48.30 $43.88 | ▼ −9.15% | ▼ −8.96% | $43.23 (−10.50%) |
Aug 26, 2026 5w ago | 8-K | $48.17 $43.72 | ▲ +9.24% | ▲ +10.44% | $43.23 (+10.26%) |
Aug 22, 2026 5w ago | Institutional Cluster | $49.01 $44.92 | ▼ −8.35% | ▼ −9.66% | $43.23 (−11.79%) |
Aug 7, 2026 8w ago | Insider Cluster | $49.31 $47.80 | ▼ −3.06% | ▼ −2.67% | $43.23 (−12.33%) |
Aug 7, 2026 8w ago | Insider Cluster | $49.31 $47.80 | ▼ −3.06% | ▼ −2.67% | $43.23 (−12.33%) |
Aug 5, 2026 8w ago | Insider Cluster | $47.74 $48.37 | ▲ +1.32% | ▲ +1.92% | $43.23 (−9.45%) |
Jul 29, 2026 9w ago | 8-K | $46.04 $48.17 | ▼ −4.63% | ▲ +0.39% | $43.23 (+6.10%) |
Jul 27, 2026 9w ago | 8-K | $46.06 $49.86 | ▲ +8.25% | ▲ +4.87% | $43.23 (−6.14%) |
Jul 27, 2026 9w ago | Court Ruling | $45.51 $49.01 | ▲ +7.69% | ▲ +4.39% | $43.23 (−5.01%) |
Jul 10, 2026 12w ago | Court Ruling | $44.77 $49.30 | ▲ +10.11% | ▲ +7.69% | $43.23 (−3.44%) |
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