Boston Scientific Corporation (BSX) Insider Trading

Over the last 3 months, BSX insiders made 6 open-market buys and 0 sales, a net purchase of $9.5M (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 1256 institutions increased and 1262 reduced their position (13F).

Insider Activity

Sentiment
100/100
Buys (3m)
6
Sells (3m)
0
Net (3m)
$9.5M
Insiders buyingCluster buying
Insider trades by month Buys Sells
Oct
Nov
Dec
Feb
May
Aug
Context3-month price -3.3%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Aug 26, 2026Morano Susan EdirectorBuy2,040$49.22
Aug 7, 2026Habiger David CdirectorBuy2,100$47.59
Aug 5, 2026Mahoney Michael Fdirector, officer: Chairman, President & CEOBuy186,240$48.33
Aug 5, 2026Habiger David CdirectorBuy1,042$48.07
Aug 5, 2026Habiger David CdirectorBuy140$48.59
Aug 3, 2026LUDWIG EDWARD JdirectorBuy5,000$45.48
Jul 2, 2026Monson Jonathanofficer: EVP and CFOOption2,087
Jul 2, 2026Monson Jonathanofficer: EVP and CFOTax1,010$43.06
May 21, 2026Habiger David CdirectorBuy2,250$55.92
May 21, 2026LUDWIG EDWARD JdirectorBuy3,580$56.68
May 21, 2026Habiger David CdirectorBuy2,200$56.95
May 21, 2026Pegus CheryldirectorBuy1,770$56.49
May 11, 2026LUDWIG EDWARD JdirectorGrant3,800
May 11, 2026Pegus CheryldirectorGrant1,281
May 11, 2026Morano Susan EdirectorGrant3,800
May 11, 2026WICHMANN DAVID SdirectorGrant3,800
May 11, 2026Smith Cathy RdirectorGrant3,800
May 11, 2026Weber Christophe PierredirectorGrant1,140
May 11, 2026Weber Christophe PierredirectorGrant1,767
May 11, 2026Habiger David CdirectorGrant3,800
May 11, 2026Smith Cathy RdirectorGrant2,209
May 11, 2026Zane Ellen MdirectorGrant3,800
May 11, 2026Mega Jessica LdirectorGrant3,800
May 11, 2026Morano Susan EdirectorGrant1,281
May 11, 2026Weber Christophe PierredirectorGrant2,660
May 11, 2026Pegus CheryldirectorGrant3,800
May 4, 2026O'Connor Padraig Andrewofficer: EVP, Global OperationsTax872$56.50
May 4, 2026Butcher Arthur Cofficer: EVP& Grp Pres, MedSurg & APACTax1,007$56.50
May 4, 2026O'Connor Padraig Andrewofficer: EVP, Global OperationsOption1,802
May 4, 2026Butcher Arthur Cofficer: EVP& Grp Pres, MedSurg & APACOption2,102

Source: BSX SEC Form 4 filings, latest Aug 26, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their BSX positions over the last 6 months (SEC Form 13F).

Increased
1256
New positions
360
Reduced
1262
Sold out
336
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Reduced131.8MMay 13, 2026
BlackRock, Inc.Reduced129.7MAug 7, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased97.1MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position96.4MMay 15, 2026
FMR LLCReduced74.2MMay 15, 2026
STATE STREET CORPIncreased70.1MAug 7, 2026
STATE STREET CORPIncreased68.0MMay 15, 2026
PRIMECAP MANAGEMENT CO/CA/Increased50.5MAug 14, 2026
FMR LLCReduced45.7MAug 13, 2026
JANE STREET GROUP, LLCIncreased33.8MAug 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased33.4MAug 12, 2026
JPMORGAN CHASE & COIncreased33.4MMay 13, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased33.3MMay 15, 2026
PRIMECAP MANAGEMENT CO/CA/Increased32.5MMay 11, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position29.8MMay 8, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.