Company profile

Boston Scientific Corp Insider Trading

BSX

Every SEC Form 4 insider trading filing for Boston Scientific Corp (BSX) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
NYSE
Sector
Surgical & Medical Instruments & Apparatus
CIK
0000885725
Filings
281
Insiders
27
Last filing
2026-08-11
SEC EDGAR ↗Yahoo Finance ↗Finviz ↗Stock Analysis ↗

Activity summary

Recent insider activity is bullish. Over the last 30 days, 5 insiders purchased shares (net $9.4M). Buying was led by Mahoney Michael F.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. Boston Scientific Corp insiders are net sellers across the period shown.

Q4 23Q1 24Q2 24Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $60.1M.

90 day insight

Over the last 90 days, Boston Scientific Corp insiders bought $9.4M (7 transactions) and sold $43K (1 transaction).

  • Most active insider: Monson Jonathan with 4 transactions totaling $543K.
  • Largest single purchase: $9.0M by Mahoney Michael F on Aug 3, 2026.

Activity skews bullish — buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Aug 11, 2026Woodworth EmilyBSX
I
2,930$51.19$150K
Aug 10, 2026Monson JonathanBSX
I
9,908$50.46$500K
Aug 5, 2026Habiger David CBSX
Purchase
2,100$47.59$100K
Aug 4, 2026Habiger David CBSX
Purchase
140$48.59$7K
Aug 3, 2026Mahoney Michael FBSX
Purchase
186,240$48.33$9.00M

45 more transactions hidden

Free account · No credit card required

Building something? Get API access →

Query this yourself

The same rows, over the API.

curl "https://api.form4api.com/v1/transactions?ticker=BSX" \
  -H "X-Api-Key: $KEY"
Get a key

Top insiders

By total value filed.

Mahoney Michael FChairman, President & CEO1 filing+$9.0M
Ludwig Edward JDirector2 filings+$430K
Habiger David CDirector5 filings+$408K
Pegus CherylDirector1 filing+$100K
Butcher Arthur CEVP& Grp Pres, MedSurg & APAC1 filing−$57K

Institutional Ownership

Top 13F-HR holders of Boston Scientific Corp as of 2026-06-30

↓ decreasing
Total reported AUM
$15.74B
QoQ change
-79.8%
Reporting period
2026-06-30
#1
State Street Corp
CIK 0000093751
$2.99B
70.1M shares
#2
BlackRock, Inc.
CIK 0002012383
$1.89B
44.4M shares
#3
BlackRock, Inc.
CIK 0002012383
$1.34B
31.4M shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →