Boston Scientific insider activity
What the executives and directors of Boston Scientific actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$19M
net open-market flow, 12 m
10 open-market buys, 12 m
100%
of sale value on 10b5-1 plans, 12 m
27 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 170 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Sep 2, 2026 | O'Connor Padraig Andrew | 1,738 |
| Jul 1, 2026 | Monson Jonathan | 3,097 |
| May 28, 2026 | Mahoney Michael F | 387K |
| May 7, 2026 | LUDWIG EDWARD J | 3,800 |
| May 7, 2026 | WICHMANN DAVID S | 3,800 |
| May 7, 2026 | Habiger David C | 3,800 |
| May 7, 2026 | Zane Ellen M | 3,800 |
| May 7, 2026 | Mega Jessica L | 3,800 |
| May 7, 2026 | Morano Susan E | 5,081 |
| May 7, 2026 | Weber Christophe Pierre | 2,907 |
| May 2, 2026 | Butcher Arthur C | 3,109 |
| May 2, 2026 | O'Connor Padraig Andrew | 2,674 |
| Mar 2, 2026 | Morano Susan E | 24 |
| Mar 2, 2026 | Weber Christophe Pierre | 879 |
| Mar 1, 2026 | Woodworth Emily | 1,210 |
| Feb 16, 2026 | Fitzgerald Joseph Michael | 5,766 |
| Feb 16, 2026 | Mahoney Michael F | 24K |
| Feb 16, 2026 | Butcher Arthur C | 3,775 |
| Feb 16, 2026 | Monson Jonathan | 1,430 |
| Feb 16, 2026 | Brown Vance R | 2,729 |
| Feb 16, 2026 | Woodworth Emily | 920 |
| Feb 16, 2026 | O'Sullivan Miriam | 1,281 |
| Feb 16, 2026 | O'Connor Padraig Andrew | 1,244 |
| Feb 14, 2026 | Fitzgerald Joseph Michael | 82K |
| Feb 14, 2026 | Mahoney Michael F | 318K |
| Feb 14, 2026 | Butcher Arthur C | 61K |
| Feb 14, 2026 | Monson Jonathan | 5,809 |
| Feb 14, 2026 | Brown Vance R | 33K |
| Feb 14, 2026 | Woodworth Emily | 3,783 |
| Feb 14, 2026 | O'Sullivan Miriam | 3,540 |
| Feb 14, 2026 | O'Connor Padraig Andrew | 3,853 |
| Feb 2, 2026 | Mahoney Michael F | 96K |
| Dec 1, 2025 | Butcher Arthur C | 17K |
| Nov 28, 2025 | O'Sullivan Miriam | 260 |
| Nov 14, 2025 | Fitzgerald Joseph Michael | 10K |
| Nov 3, 2025 | Fitzgerald Joseph Michael | 50K |
| Oct 30, 2025 | Mahoney Michael F | 312K |
| Oct 1, 2025 | Fitzgerald Joseph Michael | 50K |
| Sep 2, 2025 | Fitzgerald Joseph Michael | 50K |
| Aug 2, 2025 | Monson Jonathan | 1,618 |
| Aug 1, 2025 | LUDWIG EDWARD J | 500 |
| Aug 1, 2025 | Fitzgerald Joseph Michael | 50K |
| Aug 1, 2025 | Butcher Arthur C | 17K |
| Jul 1, 2025 | Fitzgerald Joseph Michael | 50K |
| Jul 1, 2025 | Brown Vance R | 5,988 |
| Jun 4, 2025 | Fitzgerald Joseph Michael | 56K |
| Jun 2, 2025 | Mahoney Michael F | 106K |
| May 8, 2025 | LUDWIG EDWARD J | 2,081 |
| May 8, 2025 | FUJIMORI YOSHIAKI | 2,081 |
| May 8, 2025 | WICHMANN DAVID S | 2,081 |
| May 8, 2025 | Habiger David C | 2,081 |
| May 8, 2025 | Zane Ellen M | 2,081 |
| May 8, 2025 | Sununu John E | 2,081 |
| May 8, 2025 | Mega Jessica L | 2,081 |
| May 8, 2025 | Morano Susan E | 2,686 |
| May 2, 2025 | Butcher Arthur C | 20K |
| May 2, 2025 | Sorenson John Bradley | 6,122 |
| May 1, 2025 | Mahoney Michael F | 106K |
| Apr 1, 2025 | Mahoney Michael F | 106K |
| Mar 3, 2025 | Woodworth Emily | 5,949 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| From holdings | 215K |
| Granted | 235K |
| Vested / exercised | 323K |
| Bought on market | 206K |
| Other in | 119K |
| Withheld for tax | 248K |
| Planned sales (10b5-1) | 304K |
| Gifts | 547K |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| Mahoney Michael F | 2.1M | 1.6M | 76.4 |
| Fitzgerald Joseph Michael | 211K | 214K | 101.6 |
| Brennan Daniel J. | 272K | 226K | 82.9 |
| Butcher Arthur C | 29K | 57K | 195.1 |
| Brown Vance R | 30K | 54K | 182.7 |
Who holds what
the 14 largest holdings of 24| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| Mahoney Michael F Chairman, President & CEO Last trade Aug 3, 2026 | CEO | 1.6M | $9.0M | $15M | net selling over the year: 1 month buying, 1 month selling | Aug 3, 2026 |
| Fitzgerald Joseph Michael EVP & Group Pres, Cardiology Last trade Nov 3, 2025 | Officer | 280K | – | $9.9M | net selling over the year: 0 months buying, 2 months selling | Nov 3, 2025 |
| Brennan Daniel J. EVP and CFO Last trade Feb 19, 2025 | CFO | 251K | – | – | Feb 19, 2025 | |
| Butcher Arthur C EVP& Grp Pres, MedSurg & APAC Last trade Dec 1, 2025 | Officer | 78K | – | $1.8M | net selling over the year: 0 months buying, 1 month selling | Dec 1, 2025 |
| Brown Vance R EVP, GC and Corp. Secretary Last trade May 21, 2025 | Officer | 55K | – | – | May 21, 2025 | |
| Sununu John E Last trade Aug 15, 2018 | Director | 55K | – | – | Aug 15, 2018 | |
| Monson Jonathan EVP and CFO Last trade Mar 31, 2023 | CFO | 50K | – | – | Mar 31, 2023 | |
| WICHMANN DAVID S Last trade Nov 15, 2021 | Director | 45K | – | – | Nov 15, 2021 | |
| Thepaut Eric Francis Yves EVP & Pres, Eur, Mid-East, Afr Last trade May 10, 2024 | Officer | 44K | – | – | May 10, 2024 | |
| Carruthers Wendy EVP, Human Resources Last trade Dec 2, 2024 | Officer | 35K | – | – | Dec 2, 2024 | |
| LUDWIG EDWARD J Last trade Jul 31, 2026 | Director | 30K | $430K | – | net buying over the year: 2 months buying, 0 months selling | Jul 31, 2026 |
| Zane Ellen M Last trade Nov 6, 2025 | Director | 28K | – | $2.6M | net selling over the year: 0 months buying, 2 months selling | Nov 6, 2025 |
| Mirviss Jeffrey B. SVP&Pres, Periph Intervent Last trade Feb 25, 2025 | Officer | 26K | – | – | Feb 25, 2025 | |
| O'Sullivan Miriam SVP, Chief HR Officer | Officer | 19K | – | – | – |
Open-market trade log
the 60 most recent of 1,584| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | Morano Susan E (Director) 2,040 shares $49.22 −1.8% since trade filed Aug 26, 2026 | Open-market buy | 2,040 | $49.22 | $100K | −1.8% | Aug 26, 2026 |
| Aug 5, 2026 | Habiger David C (Director) 2,100 shares $47.59 +1.6% since trade filed Aug 7, 2026 | Open-market buy | 2,100 | $47.59 | $100K | +1.6% | Aug 7, 2026 |
| Aug 4, 2026 | Habiger David C (Director) 140 shares $48.59 −0.5% since trade filed Aug 5, 2026 | Open-market buy | 140 | $48.59 | $7K | −0.5% | Aug 5, 2026 |
| Aug 3, 2026 | Habiger David C (Director) 1,042 shares $48.07 +0.6% since trade filed Aug 5, 2026 | Open-market buy | 1,042 | $48.07 | $50K | +0.6% | Aug 5, 2026 |
| Aug 3, 2026 | Mahoney Michael F (CEO) 186K shares $48.33 +0.0% since trade filed Aug 5, 2026 | Open-market buy | 186K | $48.33 | $9.0M | +0.0% | Aug 5, 2026 |
| Jul 31, 2026 | LUDWIG EDWARD J (Director) 5,000 shares $45.48 +6.3% since trade filed Aug 3, 2026 | Open-market buy | 5,000 | $45.48 | $227K | +6.3% | Aug 3, 2026 |
| May 20, 2026 | LUDWIG EDWARD J (Director) 3,580 shares $56.68 −14.7% since trade filed May 21, 2026 | Open-market buy | 3,580 | $56.68 | $203K | −14.7% | May 21, 2026 |
| May 20, 2026 | Habiger David C (Director) 2,250 shares $55.92 −13.6% since trade filed May 21, 2026 | Open-market buy | 2,250 | $55.92 | $126K | −13.6% | May 21, 2026 |
| May 20, 2026 | Pegus Cheryl (Director) 1,770 shares $56.49 −14.5% since trade filed May 21, 2026 | Open-market buy | 1,770 | $56.49 | $100K | −14.5% | May 21, 2026 |
| May 19, 2026 | Habiger David C (Director) 2,200 shares $56.95 −15.1% since trade filed May 21, 2026 | Open-market buy | 2,200 | $56.95 | $125K | −15.1% | May 21, 2026 |
| Feb 2, 2026 | Mahoney Michael F (CEO) 1,200 shares $94.06 −48.6% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 1,200 | $94.06 | $113K | −48.6% | Feb 3, 2026 |
| Feb 2, 2026 | Mahoney Michael F (CEO) 160K shares $93.49 −48.3% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 160K | $93.49 | $15M | −48.3% | Feb 3, 2026 |
| Dec 1, 2025 | Butcher Arthur C (Officer) 17K shares $101.55 −52.4% since trade filed Dec 2, 2025 | Planned sale (10b5-1) | 17K | $101.55 | $1.8M | −52.4% | Dec 2, 2025 |
| Nov 6, 2025 | Zane Ellen M (Director) 13K shares $98.28 −50.8% since trade filed Nov 6, 2025 | Planned sale (10b5-1) | 13K | $98.28 | $1.3M | −50.8% | Nov 6, 2025 |
| Nov 3, 2025 | Fitzgerald Joseph Michael (Officer) 3,600 shares $100.75 −52.0% since trade filed Nov 4, 2025 | Planned sale (10b5-1) | 3,600 | $100.75 | $363K | −52.0% | Nov 4, 2025 |
| Nov 3, 2025 | Fitzgerald Joseph Michael (Officer) 17K shares $99.76 −51.6% since trade filed Nov 4, 2025 | Planned sale (10b5-1) | 17K | $99.76 | $1.7M | −51.6% | Nov 4, 2025 |
| Nov 3, 2025 | Fitzgerald Joseph Michael (Officer) 29K shares $99.14 −51.3% since trade filed Nov 4, 2025 | Planned sale (10b5-1) | 29K | $99.14 | $2.9M | −51.3% | Nov 4, 2025 |
| Oct 28, 2025 | Zane Ellen M (Director) 2,901 shares $102.24 −52.7% since trade filed Oct 28, 2025 | Planned sale (10b5-1) | 2,901 | $102.24 | $297K | −52.7% | Oct 28, 2025 |
| Oct 27, 2025 | Zane Ellen M (Director) 9,990 shares $101.13 −52.2% since trade filed Oct 28, 2025 | Planned sale (10b5-1) | 9,990 | $101.13 | $1.0M | −52.2% | Oct 28, 2025 |
| Oct 1, 2025 | Fitzgerald Joseph Michael (Officer) 8,245 shares $98.91 −51.1% since trade filed Oct 1, 2025 | Planned sale (10b5-1) | 8,245 | $98.91 | $816K | −51.1% | Oct 1, 2025 |
| Oct 1, 2025 | Fitzgerald Joseph Michael (Officer) 42K shares $98.38 −50.9% since trade filed Oct 1, 2025 | Planned sale (10b5-1) | 42K | $98.38 | $4.1M | −50.9% | Oct 1, 2025 |
| Sep 2, 2025 | Fitzgerald Joseph Michael (Officer) 22K shares $104.89 −53.9% since trade filed Sep 3, 2025 | Planned sale (10b5-1) | 22K | $104.89 | $2.3M | −53.9% | Sep 3, 2025 |
| Sep 2, 2025 | Fitzgerald Joseph Michael (Officer) 28K shares $105.85 −54.3% since trade filed Sep 3, 2025 | Planned sale (10b5-1) | 28K | $105.85 | $3.0M | −54.3% | Sep 3, 2025 |
| Aug 1, 2025 | Fitzgerald Joseph Michael (Officer) 50K shares $104.63 −53.8% since trade filed Aug 4, 2025 | Planned sale (10b5-1) | 50K | $104.63 | $5.2M | −53.8% | Aug 4, 2025 |
| Aug 1, 2025 | Butcher Arthur C (Officer) 17K shares $104.63 −53.8% since trade filed Aug 4, 2025 | Planned sale (10b5-1) | 17K | $104.63 | $1.8M | −53.8% | Aug 4, 2025 |
| Jul 29, 2025 | FUJIMORI YOSHIAKI (Director) 2,901 shares $106.99 −54.8% since trade filed Jul 30, 2025 | Discretionary sale | 2,901 | $106.99 | $310K | −54.8% | Jul 30, 2025 |
| Jul 25, 2025 | LUDWIG EDWARD J (Director) 4,000 shares $106.03 −54.4% since trade filed Jul 28, 2025 | Discretionary sale | 4,000 | $106.03 | $424K | −54.4% | Jul 28, 2025 |
| Jul 1, 2025 | Fitzgerald Joseph Michael (Officer) 50K shares $106.97 −54.8% since trade filed Jul 2, 2025 | Planned sale (10b5-1) | 50K | $106.97 | $5.3M | −54.8% | Jul 2, 2025 |
| Jun 4, 2025 | Fitzgerald Joseph Michael (Officer) 56K shares $102.88 −53.0% since trade filed Jun 4, 2025 | Planned sale (10b5-1) | 56K | $102.88 | $5.8M | −53.0% | Jun 4, 2025 |
| Jun 2, 2025 | Mahoney Michael F (CEO) 75K shares $104.05 −53.6% since trade filed Jun 3, 2025 | Planned sale (10b5-1) | 75K | $104.05 | $7.8M | −53.6% | Jun 3, 2025 |
| Jun 2, 2025 | Mahoney Michael F (CEO) 90K shares $103.39 −53.3% since trade filed Jun 3, 2025 | Planned sale (10b5-1) | 90K | $103.39 | $9.3M | −53.3% | Jun 3, 2025 |
| May 29, 2025 | LUDWIG EDWARD J (Director) 4,000 shares $104.59 −53.8% since trade filed May 30, 2025 | Discretionary sale | 4,000 | $104.59 | $418K | −53.8% | May 30, 2025 |
| May 21, 2025 | Brown Vance R (Officer) 4,826 shares $106.42 −54.6% since trade filed May 22, 2025 | Planned sale (10b5-1) | 4,826 | $106.42 | $514K | −54.6% | May 22, 2025 |
| May 5, 2025 | Sorenson John Bradley (Officer) 4,572 shares $104.54 −53.8% since trade filed May 6, 2025 | Planned sale (10b5-1) | 4,572 | $104.54 | $478K | −53.8% | May 6, 2025 |
| May 1, 2025 | Mahoney Michael F (CEO) 73K shares $102.92 −53.0% since trade filed May 5, 2025 | Planned sale (10b5-1) | 73K | $102.92 | $7.5M | −53.0% | May 5, 2025 |
| May 1, 2025 | Mahoney Michael F (CEO) 91K shares $102.13 −52.7% since trade filed May 5, 2025 | Planned sale (10b5-1) | 91K | $102.13 | $9.3M | −52.7% | May 5, 2025 |
| May 1, 2025 | Butcher Arthur C (Officer) 17K shares $102.06 −52.7% since trade filed May 5, 2025 | Planned sale (10b5-1) | 17K | $102.06 | $1.8M | −52.7% | May 5, 2025 |
| Apr 21, 2025 | Brown Vance R (Officer) 4,826 shares $95.09 −49.2% since trade filed Apr 22, 2025 | Planned sale (10b5-1) | 4,826 | $95.09 | $459K | −49.2% | Apr 22, 2025 |
| Apr 1, 2025 | Mahoney Michael F (CEO) 164K shares $100.01 −51.7% since trade filed Apr 2, 2025 | Planned sale (10b5-1) | 164K | $100.01 | $16M | −51.7% | Apr 2, 2025 |
| Mar 21, 2025 | Brown Vance R (Officer) 4,826 shares $100.85 −52.1% since trade filed Mar 24, 2025 | Planned sale (10b5-1) | 4,826 | $100.85 | $487K | −52.1% | Mar 24, 2025 |
| Mar 4, 2025 | Woodworth Emily (Officer) 482 shares $104.63 −53.8% since trade filed Mar 5, 2025 | Planned sale (10b5-1) | 482 | $104.63 | $50K | −53.8% | Mar 5, 2025 |
| Mar 3, 2025 | Woodworth Emily (Officer) 7,149 shares $104.97 −54.0% since trade filed Mar 5, 2025 | Planned sale (10b5-1) | 7,149 | $104.97 | $750K | −54.0% | Mar 5, 2025 |
| Feb 28, 2025 | Woodworth Emily (Officer) 9,887 shares $101.13 −52.2% since trade filed Mar 3, 2025 | Planned sale (10b5-1) | 9,887 | $101.13 | $1.0M | −52.2% | Mar 3, 2025 |
| Feb 25, 2025 | Mirviss Jeffrey B. (Officer) 2,688 shares $104.00 −53.5% since trade filed Feb 25, 2025 | Planned sale (10b5-1) | 2,688 | $104.00 | $280K | −53.5% | Feb 25, 2025 |
| Feb 24, 2025 | Zane Ellen M (Director) 14K shares $104.23 −53.6% since trade filed Feb 24, 2025 | Planned sale (10b5-1) | 14K | $104.23 | $1.4M | −53.6% | Feb 24, 2025 |
| Feb 24, 2025 | Mirviss Jeffrey B. (Officer) 4,675 shares $104.25 −53.6% since trade filed Feb 25, 2025 | Planned sale (10b5-1) | 4,675 | $104.25 | $487K | −53.6% | Feb 25, 2025 |
| Feb 21, 2025 | Brown Vance R (Officer) 4,826 shares $104.64 −53.8% since trade filed Feb 21, 2025 | Planned sale (10b5-1) | 4,826 | $104.64 | $505K | −53.8% | Feb 21, 2025 |
| Feb 19, 2025 | Mirviss Jeffrey B. (Officer) 1,510 shares $105.35 −54.1% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 1,510 | $105.35 | $159K | −54.1% | Feb 19, 2025 |
| Feb 19, 2025 | Brennan Daniel J. (CFO) 67K shares $105.24 −54.1% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 67K | $105.24 | $7.1M | −54.1% | Feb 19, 2025 |
| Feb 19, 2025 | Sorenson John Bradley (Officer) 3,303 shares $105.19 −54.1% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 3,303 | $105.19 | $347K | −54.1% | Feb 19, 2025 |
| Feb 18, 2025 | Brennan Daniel J. (CFO) 2,900 shares $104.08 −53.6% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 2,900 | $104.08 | $302K | −53.6% | Feb 19, 2025 |
| Feb 18, 2025 | Brennan Daniel J. (CFO) 15K shares $104.67 −53.8% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 15K | $104.67 | $1.5M | −53.8% | Feb 19, 2025 |
| Feb 18, 2025 | Sorenson John Bradley (Officer) 2,657 shares $104.41 −53.7% since trade filed Feb 19, 2025 | Planned sale (10b5-1) | 2,657 | $104.41 | $277K | −53.7% | Feb 19, 2025 |
| Feb 14, 2025 | Sorenson John Bradley (Officer) 1,201 shares $106.31 −54.5% since trade filed Feb 18, 2025 | Planned sale (10b5-1) | 1,201 | $106.31 | $128K | −54.5% | Feb 18, 2025 |
| Feb 12, 2025 | Mirviss Jeffrey B. (Officer) 13K shares $105.06 −54.0% since trade filed Feb 13, 2025 | Planned sale (10b5-1) | 13K | $105.06 | $1.4M | −54.0% | Feb 13, 2025 |
| Feb 12, 2025 | Brennan Daniel J. (CFO) 15K shares $105.07 −54.0% since trade filed Feb 13, 2025 | Planned sale (10b5-1) | 15K | $105.07 | $1.6M | −54.0% | Feb 13, 2025 |
| Feb 12, 2025 | Sorenson John Bradley (Officer) 6,389 shares $105.06 −54.0% since trade filed Feb 13, 2025 | Planned sale (10b5-1) | 6,389 | $105.06 | $671K | −54.0% | Feb 13, 2025 |
| Feb 11, 2025 | LUDWIG EDWARD J (Director) 12K shares $105.48 −54.2% since trade filed Feb 12, 2025 | Discretionary sale | 12K | $105.48 | $1.3M | −54.2% | Feb 12, 2025 |
| Feb 7, 2025 | Sorenson John Bradley (Officer) 6,528 shares $104.97 −54.0% since trade filed Feb 10, 2025 | Planned sale (10b5-1) | 6,528 | $104.97 | $685K | −54.0% | Feb 10, 2025 |
| Feb 3, 2025 | Butcher Arthur C (Officer) 8,508 shares $101.45 −52.4% since trade filed Feb 4, 2025 | Planned sale (10b5-1) | 8,508 | $101.45 | $863K | −52.4% | Feb 4, 2025 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
259 Forms 4, 3 years
2 filed late
1 amendments
1.8 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.