BSX Insider Trading
SEC Form 4 transaction history for BSX. Filings have up to a 2 business day reporting delay.
Insiders at BSX reported 5 open-market buys worth $781K in the last 90 days, with no open-market sells. Clustered voluntary buying is historically the stronger insider signal because insiders only buy for one reason. Latest filing: LUDWIG EDWARD J on 2026-07-31.
Buys (90d)
5
Buy value (90d)
$781K
Sells (90d)
0
Sell value (90d)
$0
Transaction History
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-31 | LUDWIG EDWARD J | - | Buy | 5.0K | $45.48 | $227K |
| 2026-07-31 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | I | 64.2K | $46.73 | $3.0M |
| 2026-05-28 | Mahoney Michael F | Chairman, President & CEO | Gift | 386.8K | $0.00 | $0 |
| 2026-05-20 | Habiger David C | - | Buy | 2.3K | $55.92 | $126K |
| 2026-05-20 | LUDWIG EDWARD J | - | Buy | 3.6K | $56.68 | $203K |
| 2026-05-20 | Pegus Cheryl | - | Buy | 1.8K | $56.49 | $100K |
| 2026-05-19 | Habiger David C | - | Buy | 2.2K | $56.95 | $125K |
| 2026-05-07 | LUDWIG EDWARD J | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | Mega Jessica L | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | WICHMANN DAVID S | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | Zane Ellen M | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | Weber Christophe Pierre | - | Grant | 1.1K | $0.00 | $0 |
| 2026-05-07 | Weber Christophe Pierre | - | Grant | 1.8K | $0.00 | $0 |
| 2026-05-07 | Habiger David C | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | Morano Susan E | - | Grant | 3.8K | $0.00 | $0 |
| 2026-05-07 | Morano Susan E | - | Grant | 1.3K | $0.00 | $0 |
| 2026-05-02 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 2.1K | $0.00 | $0 |
| 2026-05-02 | O'Connor Padraig Andrew | EVP, Global Operations | Option exercise | 1.8K | $0.00 | $0 |
| 2026-05-02 | O'Connor Padraig Andrew | EVP, Global Operations | Tax withholding | 872 | $56.50 | $49K |
| 2026-05-02 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Tax withholding | 1.0K | $56.50 | $57K |
| 2026-03-02 | Morano Susan E | - | Grant | 24 | $0.00 | $0 |
| 2026-03-02 | Weber Christophe Pierre | - | Grant | 556 | $0.00 | $0 |
| 2026-03-02 | Weber Christophe Pierre | - | Grant | 323 | $0.00 | $0 |
| 2026-03-01 | Woodworth Emily | SVP, Global Controller and CAO | Tax withholding | 372 | $76.85 | $29K |
| 2026-03-01 | Woodworth Emily | SVP, Global Controller and CAO | Option exercise | 838 | $0.00 | $0 |
| 2026-02-19 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | I | 6.9K | $75.76 | $519K |
| 2026-02-16 | Monson Jonathan | EVP and CFO | Tax withholding | 440 | $74.73 | $33K |
| 2026-02-16 | O'Connor Padraig Andrew | EVP, Global Operations | Option exercise | 905 | $0.00 | $0 |
| 2026-02-16 | O'Connor Padraig Andrew | EVP, Global Operations | Tax withholding | 339 | $74.73 | $25K |
| 2026-02-16 | O'Sullivan Miriam | SVP, Chief HR Officer | Option exercise | 990 | $0.00 | $0 |
| 2026-02-16 | O'Sullivan Miriam | SVP, Chief HR Officer | Tax withholding | 291 | $74.73 | $22K |
| 2026-02-16 | Woodworth Emily | SVP, Global Controller and CAO | Option exercise | 637 | $0.00 | $0 |
| 2026-02-16 | Woodworth Emily | SVP, Global Controller and CAO | Tax withholding | 283 | $74.73 | $21K |
| 2026-02-16 | Brown Vance R | EVP, GC and Corp. Secretary | Option exercise | 1.8K | $0.00 | $0 |
| 2026-02-16 | Brown Vance R | EVP, GC and Corp. Secretary | Tax withholding | 890 | $74.73 | $67K |
| 2026-02-16 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 2.5K | $0.00 | $0 |
| 2026-02-16 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Tax withholding | 1.2K | $74.73 | $92K |
| 2026-02-16 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Option exercise | 4.0K | $0.00 | $0 |
| 2026-02-16 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Tax withholding | 1.8K | $74.73 | $135K |
| 2026-02-16 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 16.3K | $0.00 | $0 |
| 2026-02-16 | Mahoney Michael F | Chairman, President & CEO | Tax withholding | 7.9K | $74.73 | $588K |
| 2026-02-16 | Monson Jonathan | EVP and CFO | Option exercise | 990 | $0.00 | $0 |
| 2026-02-14 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Tax withholding | 2.0K | $74.73 | $149K |
| 2026-02-14 | O'Connor Padraig Andrew | EVP, Global Operations | Tax withholding | 449 | $74.73 | $34K |
| 2026-02-14 | Monson Jonathan | EVP and CFO | Option exercise | 1.1K | $0.00 | $0 |
| 2026-02-14 | Woodworth Emily | SVP, Global Controller and CAO | Tax withholding | 296 | $74.73 | $22K |
| 2026-02-14 | Woodworth Emily | SVP, Global Controller and CAO | Option exercise | 661 | $0.00 | $0 |
| 2026-02-14 | O'Sullivan Miriam | SVP, Chief HR Officer | Tax withholding | 329 | $74.73 | $25K |
| 2026-02-14 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 16.5K | $0.00 | $0 |
| 2026-02-14 | Mahoney Michael F | Chairman, President & CEO | Tax withholding | 8.0K | $74.73 | $597K |
| 2026-02-14 | Monson Jonathan | EVP and CFO | Tax withholding | 470 | $74.73 | $35K |
| 2026-02-14 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Tax withholding | 1.5K | $74.73 | $115K |
| 2026-02-14 | O'Connor Padraig Andrew | EVP, Global Operations | Option exercise | 1.2K | $0.00 | $0 |
| 2026-02-14 | O'Sullivan Miriam | SVP, Chief HR Officer | Option exercise | 1.1K | $0.00 | $0 |
| 2026-02-14 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 3.2K | $0.00 | $0 |
| 2026-02-14 | Brown Vance R | EVP, GC and Corp. Secretary | Tax withholding | 895 | $74.73 | $67K |
| 2026-02-14 | Brown Vance R | EVP, GC and Corp. Secretary | Option exercise | 1.9K | $0.00 | $0 |
| 2026-02-14 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Option exercise | 4.4K | $0.00 | $0 |
| 2026-02-13 | Monson Jonathan | EVP and CFO | Option exercise | 1.8K | $0.00 | $0 |
| 2026-02-13 | Brown Vance R | EVP, GC and Corp. Secretary | Grant | 14.8K | $0.00 | $0 |
| 2026-02-13 | Brown Vance R | EVP, GC and Corp. Secretary | Option exercise | 1.1K | $0.00 | $0 |
| 2026-02-13 | Brown Vance R | EVP, GC and Corp. Secretary | Tax withholding | 12.8K | $74.73 | $956K |
| 2026-02-13 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Grant | 25.4K | $0.00 | $0 |
| 2026-02-13 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 2.2K | $0.00 | $0 |
| 2026-02-13 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Tax withholding | 25.1K | $74.73 | $1.9M |
| 2026-02-13 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Grant | 34.9K | $0.00 | $0 |
| 2026-02-13 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Option exercise | 2.8K | $0.00 | $0 |
| 2026-02-13 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Tax withholding | 33.1K | $74.73 | $2.5M |
| 2026-02-13 | Mahoney Michael F | Chairman, President & CEO | Grant | 132.2K | $0.00 | $0 |
| 2026-02-13 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 8.8K | $0.00 | $0 |
| 2026-02-13 | Mahoney Michael F | Chairman, President & CEO | Tax withholding | 132.1K | $74.73 | $9.9M |
| 2026-02-13 | Monson Jonathan | EVP and CFO | Tax withholding | 788 | $74.73 | $59K |
| 2026-02-13 | O'Connor Padraig Andrew | EVP, Global Operations | Option exercise | 500 | $0.00 | $0 |
| 2026-02-13 | O'Connor Padraig Andrew | EVP, Global Operations | Tax withholding | 199 | $74.73 | $15K |
| 2026-02-13 | O'Sullivan Miriam | SVP, Chief HR Officer | Option exercise | 588 | $0.00 | $0 |
| 2026-02-13 | O'Sullivan Miriam | SVP, Chief HR Officer | Tax withholding | 200 | $74.73 | $15K |
| 2026-02-13 | Woodworth Emily | SVP, Global Controller and CAO | Option exercise | 1.4K | $0.00 | $0 |
| 2026-02-13 | Woodworth Emily | SVP, Global Controller and CAO | Tax withholding | 690 | $74.73 | $52K |
| 2026-02-12 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Tax withholding | 1.6K | $74.12 | $119K |
| 2026-02-12 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 2.7K | $0.00 | $0 |
| 2026-02-12 | Brown Vance R | EVP, GC and Corp. Secretary | Option exercise | 1.4K | $0.00 | $0 |
| 2026-02-12 | Brown Vance R | EVP, GC and Corp. Secretary | Tax withholding | 488 | $74.12 | $36K |
| 2026-02-12 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 13.7K | $0.00 | $0 |
| 2026-02-12 | Mahoney Michael F | Chairman, President & CEO | Tax withholding | 6.6K | $74.12 | $491K |
| 2026-02-12 | Monson Jonathan | EVP and CFO | Option exercise | 1.2K | $0.00 | $0 |
| 2026-02-12 | Monson Jonathan | EVP and CFO | Tax withholding | 573 | $74.12 | $42K |
| 2026-02-12 | O'Connor Padraig Andrew | EVP, Global Operations | Option exercise | 1.1K | $0.00 | $0 |
| 2026-02-12 | O'Connor Padraig Andrew | EVP, Global Operations | Tax withholding | 457 | $74.12 | $34K |
| 2026-02-12 | Woodworth Emily | SVP, Global Controller and CAO | Option exercise | 481 | $0.00 | $0 |
| 2026-02-12 | Woodworth Emily | SVP, Global Controller and CAO | Tax withholding | 242 | $74.12 | $18K |
| 2026-02-12 | O'Sullivan Miriam | SVP, Chief HR Officer | Option exercise | 961 | $0.00 | $0 |
| 2026-02-12 | O'Sullivan Miriam | SVP, Chief HR Officer | Tax withholding | 338 | $74.12 | $25K |
| 2026-02-12 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Tax withholding | 1.3K | $74.12 | $97K |
| 2026-02-12 | Fitzgerald Joseph Michael | EVP & Group Pres, Cardiology | Option exercise | 3.5K | $0.00 | $0 |
| 2026-02-02 | Mahoney Michael F | Chairman, President & CEO | Sell | 1.2K | $94.06 | $113K |
| 2026-02-02 | Mahoney Michael F | Chairman, President & CEO | Sell | 159.7K | $93.49 | $14.9M |
| 2026-02-02 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 49.4K | $24.55 | $1.2M |
| 2026-02-02 | Mahoney Michael F | Chairman, President & CEO | Option exercise | 46.3K | $27.09 | $1.3M |
| 2025-12-01 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 3.2K | $22.71 | $72K |
| 2025-12-01 | Butcher Arthur C | EVP& Grp Pres, MedSurg & APAC | Option exercise | 1.0K | $17.26 | $17K |
Form 4 filings have a reporting delay of up to 2 business days. Insiders sell for many non-signal reasons (diversification, tax planning). This is observation data, not a recommendation.
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Understanding
Interpreting BSX insider filings
Officers, directors, and 10% owners of BSX must report every trade in their own stock to the SEC within two business days on Form 4. We parse each filing as it lands on EDGAR, so this page is the same primary-source record professionals read, minus the paywall.
The asymmetry that makes this data useful: insiders sell for dozens of innocent reasons (taxes, diversification, a house), but they voluntarily buy on the open market for exactly one reason. That is why buys are headlined and one-off sells deserve little weight.
The strongest historical pattern is the cluster: several different insiders buying within days of each other. A lone director's small buy is noise; the CFO and two directors buying the same week is a documented anomaly worth your attention.
Frequently Asked Questions
Who files Form 4 for BSX?
Officers, directors, and 10%+ owners of BSX must report their trades to the SEC within 2 business days.
What do the transaction types mean?
Buy (P) and Sell (S) are open-market trades, the strongest signals. Grants, option exercises, and gifts are routine compensation events.
How fresh is this data?
We poll SEC EDGAR every 30 minutes. New filings appear here shortly after the SEC publishes them.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.