Boston Scientific Corporation (BSX) Insider Trading

Over the last 3 months, BSX insiders made 4 open-market buys and 0 sales, a net purchase of $554K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 1409 institutions increased and 1342 reduced their position (13F).

Insider Activity

Sentiment
100/100
Buys (3m)
4
Sells (3m)
0
Net (3m)
$554.0K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Sep
Oct
Nov
Dec
Feb
May
Context3-month price -33.1%Institutions mixed (13F)
DateInsiderTypeSharesPrice
May 21, 2026Pegus CheryldirectorBuy1,770$56.49
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 11, 2026Morano Susan EdirectorGrant3,800
May 11, 2026Zane Ellen MdirectorGrant3,800
May 11, 2026Smith Cathy RdirectorGrant2,209
May 11, 2026Weber Christophe PierredirectorGrant1,767
May 11, 2026Mega Jessica LdirectorGrant3,800
May 11, 2026Pegus CheryldirectorGrant3,800
May 11, 2026Weber Christophe PierredirectorGrant2,660
May 11, 2026Pegus CheryldirectorGrant1,281
May 11, 2026Weber Christophe PierredirectorGrant1,140
May 11, 2026WICHMANN DAVID SdirectorGrant3,800
May 11, 2026Morano Susan EdirectorGrant1,281
May 11, 2026LUDWIG EDWARD JdirectorGrant3,800
May 11, 2026Smith Cathy RdirectorGrant3,800
May 11, 2026Habiger David CdirectorGrant3,800
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, 2026Butcher Arthur Cofficer: EVP& Grp Pres, MedSurg & APACOption2,102
May 4, 2026O'Connor Padraig Andrewofficer: EVP, Global OperationsOption1,802
Mar 4, 2026Weber Christophe PierredirectorGrant556
Mar 4, 2026Morano Susan EdirectorGrant24
Mar 4, 2026Weber Christophe PierredirectorGrant323
Mar 4, 2026Smith Cathy RdirectorGrant323
Mar 4, 2026Smith Cathy RdirectorGrant556
Mar 4, 2026Pegus CheryldirectorGrant24
Mar 3, 2026Woodworth Emilyofficer: SVP, Global Controller and CAOTax372$76.85
Mar 3, 2026Woodworth Emilyofficer: SVP, Global Controller and CAOOption838

Source: BSX SEC Form 4 filings, latest May 21, 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
1409
New positions
399
Reduced
1342
Sold out
406
Largest moves
InstitutionActionSharesFiled
VANGUARD GROUP INCIncreased139.7MJan 29, 2026
BLACKROCK, INC.Reduced136.0MFeb 12, 2026
BLACKROCK, INC.Reduced131.8MMay 13, 2026
FMR LLCReduced97.4MFeb 17, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position96.4MMay 15, 2026
FMR LLCReduced74.2MMay 15, 2026
STATE STREET CORPIncreased68.0MMay 15, 2026
STATE STREET CORPIncreased65.8MFeb 13, 2026
BANK OF AMERICA CORP /DE/Increased33.9MFeb 3, 2026
JPMORGAN CHASE & COIncreased33.4MMay 13, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased33.3MMay 15, 2026
PRIMECAP MANAGEMENT CO/CA/Increased32.5MMay 11, 2026
GEODE CAPITAL MANAGEMENT, LLCReduced32.4MFeb 9, 2026
PRIMECAP MANAGEMENT CO/CA/Reduced31.1MFeb 11, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position29.8MMay 8, 2026

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