Insider and congress filings

Boston Scientific Corporation (BSX)

NYSE · Healthcare · 304 insider transactions · 176 congress trades · last filed 1 month agoS&P 500

10
Open-market insider filings shown
1d
Median delay on the insider filings, in business days
within the two business day rule
10 buys·0 sells
Purchases and sales in the filings shown
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About Boston Scientific Corporation

from the company's filings and listing, as of Oct 26, 2026
Exchange
NYSE
Sector
Healthcare
Industry
Medical - Devices
Chief executive
Michael F. Mahoney
Employees
59,000
Listed since
May 19, 1992
Market value
$66.2B
Price to earnings (12 mo)
18.4
Net income per share, as reported (12 mo)
$2.48
Dividend yield
-

www.bostonscientific.com

Earnings

6 reported quarters · next on Oct 28, 2026
QuarterEPSEPS expectedRevenueRevenue expectedResult
Q2 FY2026reported Jul 29, 2026$0.86$0.84$5.4B$5.4BEPS beatRevenue in line
Q1 FY2026reported Apr 22, 2026$0.80$0.79$5.2B$5.2BEPS beatRevenue in line
Q4 FY2025reported Feb 4, 2026$0.80$0.78$5.3B$5.3BEPS beatRevenue in line
Q3 FY2025reported Oct 22, 2025$0.75$0.71$5.1B$5.0BEPS beatRevenue beat
Q2 FY2025reported Jul 23, 2025$0.75$0.73$5.1B$4.9BEPS beatRevenue beat
Q1 FY2025reported Apr 23, 2025$0.75$0.67$4.7B$4.6BEPS beatRevenue beat

Actual against the consensus estimate at the time. A flag marks a beat or a miss of more than 1.5% either way; inside that band the quarter is in line. A flag reads n/a only when a number is missing. Quarterly EPS is the figure set against the consensus, usually adjusted, so the quarters need not add up to the 12-month net income per share above. An estimate is a forecast made by analysts, not a company target.

Executive pay

as filed for fiscal 2025 · proxy filed Mar 18, 2026
ExecutiveSalaryStock awardsOtherTotal
Michael F. MahoneyChairman of the Board, President and Chief Executive Officer$1.4M$13.6M$8.5M$23.5M
Joseph M. FitzgeraldExecutive Vice President and Group President, Cardiovascular$893K$4.3M$2.8M$8.0M
Arthur C. ButcherExecutive Vice President and Group President, MedSurg and Asia Pacific$745K$3.4M$2.3M$6.5M
Jonathan R. MonsonExecutive Vice President and Chief Financial Officer$592K$1.6M$3.9M$6.1M
Jeffrey B. MirvissExecutive Vice President and President, Peripheral Interventions$702K$2.0M$1.5M$4.2M
Vance R. BrownSenior Vice President, General Counsel and Corporate Secretary$659K$1.7M$1.5M$3.9M

The summary compensation table from the proxy statement for fiscal 2025, with titles as filed then. 1 executive who has since left the company is named in that filing and not shown here. Read the filing

Institutional holders

13F positions as of Jun 30, 2026
HolderValueSharesShares vs prior qtr% of shares out
BlackRock, Inc.$5.5B129,680,916-1.6%8.78%
Vanguard Capital Management LLC$4.1B97,087,553+0.7%6.57%
State Street Corp$3.0B70,111,196+3.1%4.72%
Primecap Management Co$2.2B50,520,914+55.3%3.42%
FMR LLC$2.0B45,702,845-38.4%3.09%
Massachusetts Financial Services Co$1.5B24,859,191+126.1%1.68%
Geode Capital Management, LLC$1.4B33,440,102+0.5%2.26%
Vanguard Portfolio Management LLC$1.3B29,792,7940.0%2.02%
D. E. Shaw & Co., Inc.$1.1B25,457,409+4.7%1.72%
JPMorgan Chase & Co.$1.0B23,907,838-28.3%1.62%
Arrowstreet Capital, Limited Partnership$994.2M23,293,913+67.7%1.58%
Norges Bank$903.5M21,170,029New1.43%

A 13F reports long US equity positions and is filed within 45 days of the quarter end, so these are positions as they stood on Jun 30, 2026. New: not in this holder's prior 13F as reported; a change of filer ID can also show as new. For a manager's whole book see the fund directory. What a 13F covers and leaves out is explained in our guide to Form 13F.

Tracked fund managers holding BSX

10 managers
ManagerValueSharesShare of book
D. E. Shaw & Co.David Shaw$1.1B25,457,4090.5%
Two Sigma$826.2M19,359,0230.6%
Farallon Capital$449.0M10,521,1842.1%
Maverick CapitalLee Ainslie$253.4M5,937,5532.2%
Voloridge Investment Management$139.8M3,275,3260.6%
Walleye Capital$67.4M1,578,1720.2%
OrbiMed$63.3M1,483,2001.2%
Deerfield Management$56.1M1,315,0000.6%
Trexquant Investment$49.9M1,169,7410.3%
Glenview CapitalLarry Robbins$4.8M113,0960.1%

10 of the 97 fund managers we track list BSX shares among the largest positions in their latest 13F, filed for Q2 2026. A manager can hold it further down the book too, so this is a floor, not a count. Share of book is the position against the manager's whole disclosed 13F value.

Know when the next BSX filing is reported.

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Open-market insider trades

10 filings shown · newest filing first
InsiderActionSharesPriceValueTrade dateDelay
(business days)
Susan E. MoranoDirectorBought2,040$49.22$100KAug 25, 2026filed Aug 26, 20261d
David C. HabigerDirectorBought2,100$47.59$100KAug 5, 2026filed Aug 7, 20262d
Michael F. MahoneyChairman, President & CEOBought186,240$48.33$9.0MAug 3, 2026filed Aug 5, 20262d
David C. HabigerDirectorBought1,042$48.07$50KAug 3, 2026filed Aug 5, 20262d
David C. HabigerDirectorBought140$48.59$7KAug 4, 2026filed Aug 5, 20261d
Edward J. LudwigDirectorBought5,000$45.48$227KJul 31, 2026filed Aug 3, 20261d
David C. HabigerDirectorBought2,200$56.95$125KMay 19, 2026filed May 21, 20262d
David C. HabigerDirectorBought2,250$55.92$126KMay 20, 2026filed May 21, 20261d
Edward J. LudwigDirectorBought3,580$56.68$203KMay 20, 2026filed May 21, 20261d
Cheryl PegusDirectorBought1,770$56.49$100KMay 20, 2026filed May 21, 20261d

One row is one filing, newest filing first. A filing that reported its trade in several tranches is summed, priced at the weighted average, and marked with its line count. The delay counts business days from the trade to the filing, the unit of Form 4's two business day deadline: weekends and federal holidays are skipped. How the filing itself works is explained in our guide to Form 4.

Other Form 4 activity (20)
InsiderEventSharesDate
Padraig Andrew O'ConnorEVP, Global OperationsTax withholding567Sep 2, 2026
Padraig Andrew O'ConnorEVP, Global OperationsOption exercise1,171Sep 2, 2026
Emily WoodworthSVP, Global Controller and CAODiscretionary transaction2,930Aug 11, 2026
Jonathan MonsonEVP and CFODiscretionary transaction9,908Aug 10, 2026
Michael F. MahoneyChairman, President & CEODiscretionary transaction22,119Aug 3, 2026
Joseph Michael FitzgeraldEVP & Group Pres, CardiologyDiscretionary transaction64,198Jul 31, 2026
Jonathan MonsonEVP and CFOTax withholding1,010Jul 1, 2026
Jonathan MonsonEVP and CFOOption exercise2,087Jul 1, 2026
Michael F. MahoneyChairman, President & CEOGift386,755May 28, 2026
David C. HabigerDirectorStock award3,800May 7, 2026
Edward J. LudwigDirectorStock award3,800May 7, 2026
Jessica L. MegaDirectorStock award3,800May 7, 2026
Susan E. MoranoDirectorStock award5,081May 7, 2026
Cheryl PegusDirectorStock award5,081May 7, 2026
Cathy R. SmithDirectorStock award6,009May 7, 2026
Christophe Pierre WeberDirectorStock award5,567May 7, 2026
David S. WichmannDirectorStock award3,800May 7, 2026
Ellen M. ZaneDirectorStock award3,800May 7, 2026
Arthur C. ButcherEVP& Grp Pres, Medsurg & APACTax withholding1,007May 2, 2026
Arthur C. ButcherEVP& Grp Pres, Medsurg & APACOption exercise2,102May 2, 2026

Awards, option exercises, shares withheld to cover tax and gifts all file on the same form as a purchase or a sale. None of them is a decision to trade, so they sit here rather than beside the ones that are.

Congress trades in BSX

20 disclosures of 176 on record · median 25d of the 45 allowed

Since the trade: the stock's move from the trade date to the latest close we hold (figures as of Oct 24, 2026), not the member's result. Not investment advice.

MemberTypeActionAmount disclosedStock since the tradeTrade dateDisclosedDelay
Kevin HernJointStockSale$15,001 - $50,000-5.4%After the saleS&P 500 -0.9% · -4.5 pts vs S&P 500Aug 31, 2026Sep 25, 202625d
Kevin HernDependent childStockSale$1,001 - $15,000-2.7%After the saleS&P 500 -1.7% · -1.0 pts vs S&P 500Sep 3, 2026Sep 25, 202622d
Kevin HernJointStockSale$50,001 - $100,000-4.4%After the saleS&P 500 -1.3% · -3.1 pts vs S&P 500Sep 4, 2026Sep 25, 202621d
Kevin HernJointStockSale$50,001 - $100,000+1.6%After the saleS&P 500 -0.3% · +2.0 pts vs S&P 500Sep 9, 2026Sep 25, 202616d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-9.5%S&P 500 -1.0% · -8.5 pts vs S&P 500Aug 18, 2026Sep 10, 202623d
Ro KhannaStockPurchase$1,001 - $15,000-5.7%S&P 500 +0.3% · -6.0 pts vs S&P 500Aug 3, 2026Sep 4, 202632d
Ro KhannaStockPurchase$1,001 - $15,000-9.4%S&P 500 -1.7% · -7.7 pts vs S&P 500Aug 10, 2026Sep 4, 202625d
Ro KhannaStockSale$1,001 - $15,000+0.9%After the saleS&P 500 +1.7% · -0.8 pts vs S&P 500Jul 7, 2026Aug 7, 202631d
Ro KhannaStockPurchase$1,001 - $15,000+4.4%S&P 500 +2.4% · +2.0 pts vs S&P 500Jul 20, 2026Aug 7, 202618d
Alan ArmstrongSelfStockPurchase$1,001 - $15,000-33.9%S&P 500 +19.8% · -53.8 pts vs S&P 500Mar 27, 2026Jul 21, 2026116d
John BoozmanJointStockSale (Partial)$1,001 - $15,000-6.5%After the saleS&P 500 +0.4% · -6.8 pts vs S&P 500Jun 4, 2026Jul 13, 202639d
Ro KhannaStockPurchase$1,001 - $15,000-4.2%S&P 500 +0.1% · -4.2 pts vs S&P 500Jun 2, 2026Jul 6, 202634d
Ro KhannaStockSale$1,001 - $15,000-2.6%After the saleS&P 500 +1.3% · -3.9 pts vs S&P 500Jun 16, 2026Jul 6, 202620d
Ro KhannaStockPurchase$1,001 - $15,000+7.8%S&P 500 +2.3% · +5.6 pts vs S&P 500Jun 30, 2026Jul 6, 20266d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-5.9%S&P 500 +3.0% · -8.9 pts vs S&P 500Jun 5, 2026Jul 2, 202627d
Gilbert Ray Cisneros, Jr.StockSale$1,001 - $15,000-5.9%After the saleS&P 500 +3.0% · -8.9 pts vs S&P 500Jun 5, 2026Jul 2, 202627d
Ro KhannaStockSale$15,001 - $50,000-19.1%After the saleS&P 500 +5.4% · -24.6 pts vs S&P 500May 1, 2026Jun 9, 202639d
Ro KhannaStockPurchase$1,001 - $15,000-13.3%S&P 500 +2.8% · -16.1 pts vs S&P 500May 15, 2026Jun 9, 202625d
Ro KhannaStockSale$1,001 - $15,000-9.4%After the saleS&P 500 +1.3% · -10.7 pts vs S&P 500May 27, 2026Jun 9, 202613d
Gilbert Ray Cisneros, Jr.StockPurchase$1,001 - $15,000-14.4%S&P 500 +2.8% · -17.2 pts vs S&P 500May 11, 2026Jun 8, 202628d

Since the trade is an estimate, set beside the S&P 500 over the same window, with the gap between the two in percentage points. The filing carries a band, not a fill, and a sale keeps the stock's sign, so a positive figure after a sale means the stock kept rising after it. An option row carries the underlying stock's move. A row marked n/a is one we hold no figure for.

A delay above 45 days is the gap between the dates on the report; we mark a filing late only after checking it.

Every Congress trade in BSX, filterable by party, chamber, type and account.

Members of Congress reporting a position

8 members · estimate, as of Oct 25, 2026

8 members report a position (estimated). The largest estimated position is in the $100,001 - $250,000 band.

MemberParty, chamberEstimated positionShare of their portfolio
Gilbert Ray Cisneros, Jr.Democrat · House$100,001 - $250,0000.3%
Kevin HernRepublican · House$50,001 - $100,0000.2%
Lucy McBathDemocrat · House$15,001 - $50,0000.4%
Julie JohnsonDemocrat · House$15,001 - $50,0000.1%
Robert BresnahanRepublican · House$15,001 - $50,0000.1%
Tina SmithDemocrat · Senate$1,001 - $15,0000.2%
Harriet M. HagemanRepublican · House$1,001 - $15,0000.1%
Michael A. RulliRepublican · House$1,001 - $15,0000.4%

Estimate, as of Oct 25, 2026. Each position is modelled from the member's disclosed transactions and annual filings: the midpoint of each disclosed band, moved with the stock's price since the trade. It is a rough estimate of a reported position, not a figure from a filing, which is why it is shown as a band. Share of portfolio sets that estimate against the member's whole estimated public-stock portfolio.

Questions

Are insiders buying or selling BSX?

Across the 10 most recent open-market filings shown here, 10 were purchases and 0 were sales.

Which members of Congress have traded BSX?

Kevin Hern, Gilbert Ray Cisneros, Jr., Ro Khanna, Alan Armstrong and John Boozman disclosed BSX transactions in the filings shown here.

Which members of Congress hold BSX?

8 members of Congress report a position in BSX in the estimate we hold as of Oct 25, 2026. The two largest estimated positions belong to Gilbert Ray Cisneros, Jr. and Kevin Hern; Lucy McBath holds one of the next largest, in the $15,001 - $50,000 band. The estimate is built from disclosed transactions and annual filings, so it is shown as a band rather than a figure from a filing.

Is BSX in the S&P 500 or the Nasdaq 100?

Boston Scientific Corporation is a current member of the S&P 500, per the membership list we hold as of Oct 26, 2026. Current members of either index get a page here whatever their filing history.

How quickly are BSX trades disclosed?

Insider filings on this page reached the public a median of 1 business day after the transaction (weekends and federal holidays skipped), against the two business days Form 4 allows. Congressional disclosures took a median of 25 days, against the 45 the STOCK Act allows.

How to read a Form 4

A DECISION THE INSIDER MADE

POpen-market purchase. Bought with their own money at the market price.
SOpen-market sale. Sold on the market. A sale marked scheduled was set up in advance under a Rule 10b5-1 plan, often months before.

COMPENSATION PLUMBING

AStock award. Granted as pay, not bought.
MOption exercise. Converting options already held into shares.
FTax withholding. Shares handed back to the company to pay the tax on a grant.
GGift. Given away, with no money changing hands.

Congress rows disclose a value range rather than an exact amount, and the STOCK Act allows up to 45 days to report. Full sourcing and the limits of this data are on the methodology page. A filing is a record of a transaction, not a signal, and nothing here is investment advice.

Data as of Oct 26, 2026.

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