Michael F Mahoney bought $9.0M of BSX
Chairman, President & CEO at BOSTON SCIENTIFIC CORP. 186,240 shares at an average of $48.33, traded Aug 3, 2026, filed Aug 5, 2026.
Score components
- +25RoleCEO
- +25Trade size$9.0M at market
- +3Relative to holdingsHoldings up 13%
- +8Price context55% below the 52-week high
- +15Cluster3 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (1 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001225208-26-006950, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 3, 2026 | POpen-market purchase Common Stock | +186,240 | $48.33 | $9.0M | 1,590,024 | Aug 5, 2026 |
| Aug 3, 2026 | IDiscretionary transaction Common Stockindirect: By 401(k) | +22,119 | $48.43 | $1.1M | 22,119 | Aug 5, 2026 |
Related signals
Other insiders at BOSTON SCIENTIFIC CORP and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 36Weak | BSXbuy BOSTON SCIENTIFIC CORP | Susan E Morano director | $100k 2,040 shares | +17% | |
| 56Moderate | BOSTON SCIENTIFIC CORP | David C Habiger director | $100k 2,100 shares | +14% | |
| 53Moderate | BOSTON SCIENTIFIC CORP | David C Habiger director | $57k 1,182 shares | +9% | |
| 69Notable | BOSTON SCIENTIFIC CORP | Edward J Ludwig director | $227k 5,000 shares | +20% | |
| 67Notable | BOSTON SCIENTIFIC CORP | David C Habiger director | $251k 4,450 shares | +47% | |
| 63Notable | BOSTON SCIENTIFIC CORP | Edward J Ludwig director | $203k 3,580 shares | +16% | |
| 66Notable | BOSTON SCIENTIFIC CORP | Cheryl Pegus director | $100k 1,770 shares | - | |
| 20Weak | BOSTON SCIENTIFIC CORP | Michael F Mahoney Chairman, President & CEO | $15M 160,901 shares | -10% | |
| 25Weak | BOSTON SCIENTIFIC CORP | Arthur C Butcher EVP& Grp Pres, MedSurg & APAC | $1.8M 17,313 shares | -42% | |
| 38Weak | BOSTON SCIENTIFIC CORP | Ellen M Zane director | $1.3M 12,891 shares | -35% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.