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United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

BOSTON SCIENTIFIC CORP

BSX · NYSE · CIK 0000885725 · Healthcare · Medical Devices

INSIDER SIGNAL

84.9 / 100

5 buyers · 10 purchase transaction lines · $10.0M gross purchase

WHY THIS SIGNAL?

Buyer breadthStrong
Purchase sizeStrong
RoleModerate
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+35.0 / 35
Purchase size+22.9 / 25
Role+13.0 / 20
Recency+4.1 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Role scores low · most senior buyer: Chairman, President & CEO (CEO, chair and 10% owners score lowest)
  • ✓ Cluster breadth is broad · 4+ insiders

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Habiger David CDirector
○●●●●●
O'Connor Padraig AndrewEVP, Global Operations
○○○○
Mahoney Michael FChairman, President & CEO
○○●
LUDWIG EDWARD JDirector
○●●
Monson JonathanEVP and CFO
○○○
Morano Susan EDirector
○●
● Purchase▼ Sale○ Other

Showing the six most active owners; 8 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS5
PURCHASE CONCENTRATION90%Largest buyer: Mahoney Michael F · $9.0M
CLUSTER BUYING · 15D3 insidersPeak activity: 2026-05-19–2026-05-20

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

84.9 / 100

Latest recorded score

↓ -0.2 ptsversus the previous recorded snapshot
  1. 85.4
  2. 85.3
  3. 85.2
  4. 85.1
  5. 84.9

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

10Purchases
9Sales
110Other Form 4 lines
52SEC filings · 365 days
BUYING10 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER22 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-0.9%
3M
-4.3%
6M
-30.8%
12M
-55.9%

Volatility & liquidity

Volatility
31.8%
Beta
—
Avg daily value
USD 854.4M

Valuation

Market cap
USD 61.9B
P/E
21.4×

Fundamentals

Profit margin
14.4%
ROE
11.9%
Industry
Medical Devices

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-30 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
41,410,512
Previous report
46,504,769
Avg daily volume
21,984,746
Days to cover
1.9

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-25Morano Susan EPurchase (P)Common Stock2,040USD 49.22USD 100,409SEC filing ↗
2026-08-05Habiger David CPurchase (P)Common Stock2,100USD 47.59USD 99,939SEC filing ↗
2026-08-04Habiger David CPurchase (P)Common Stock140USD 48.59USD 6,803SEC filing ↗
2026-08-03Mahoney Michael FPurchase (P)Common Stock186,240USD 48.33USD 9,000,979SEC filing ↗
2026-08-03Habiger David CPurchase (P)Common Stock1,042USD 48.07USD 50,089SEC filing ↗
2026-07-31LUDWIG EDWARD JPurchase (P)Common Stock5,000USD 45.48USD 227,400SEC filing ↗
2026-05-20Pegus CherylPurchase (P)Common Stock1,770USD 56.49USD 99,987SEC filing ↗
2026-05-20LUDWIG EDWARD JPurchase (P)Common Stock3,580USD 56.68USD 202,914SEC filing ↗
2026-05-20Habiger David CPurchase (P)Common Stock2,250USD 55.92USD 125,820SEC filing ↗
2026-05-19Habiger David CPurchase (P)Common Stock2,200USD 56.95USD 125,290SEC filing ↗
2024-12-03Fitzgerald Joseph MichaelPurchase (P)Common Stock50USD 90.29USD 4,514SEC filing ↗
2021-11-15WICHMANN DAVID SPurchase (P)Common Stock25,000USD 41.98USD 1,049,500SEC filing ↗

Form 4 evidence

129 transaction lines in the latest 365-day window; 1,723 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-02O'Connor Padraig AndrewOption exercise / conversion (M)Common Stock1,171USD 0.00USD 0SEC filing ↗
2026-09-02O'Connor Padraig AndrewTax withholding (F)Common Stock567USD 48.37USD 27,426SEC filing ↗
2026-08-25Morano Susan EPurchase (P)Common Stock2,040USD 49.22USD 100,409SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-02O'Connor Padraig AndrewOption exercise / conversion (M)Common Stock1,171USD 0.00USD 0SEC filing ↗
2026-09-02O'Connor Padraig AndrewTax withholding (F)Common Stock567USD 48.37USD 27,426SEC filing ↗
2026-08-25Morano Susan EPurchase (P)Common Stock2,040USD 49.22USD 100,409SEC filing ↗
2026-08-11Woodworth EmilyI (I)Common Stock2,930USD 51.19USD 149,987SEC filing ↗
2026-08-10Monson JonathanI (I)Common Stock9,908USD 50.46USD 499,958SEC filing ↗
2026-08-05Habiger David CPurchase (P)Common Stock2,100USD 47.59USD 99,939SEC filing ↗
2026-08-04Habiger David CPurchase (P)Common Stock140USD 48.59USD 6,803SEC filing ↗
2026-08-03Mahoney Michael FPurchase (P)Common Stock186,240USD 48.33USD 9,000,979SEC filing ↗
2026-08-03Mahoney Michael FI (I)Common Stock22,119USD 48.43USD 1,071,223SEC filing ↗
2026-08-03Habiger David CPurchase (P)Common Stock1,042USD 48.07USD 50,089SEC filing ↗
2026-07-31LUDWIG EDWARD JPurchase (P)Common Stock5,000USD 45.48USD 227,400SEC filing ↗
2026-07-31Fitzgerald Joseph MichaelI (I)Common Stock64,198USD 46.73USD 2,999,973SEC filing ↗
2026-07-01Monson JonathanOption exercise / conversion (M)Common Stock2,087USD 0.00USD 0SEC filing ↗
2026-07-01Monson JonathanTax withholding (F)Common Stock1,010USD 43.06USD 43,491SEC filing ↗
2026-05-28Mahoney Michael FGift (G)Common Stock386,755USD 0.00USD 0SEC filing ↗
2026-05-20Pegus CherylPurchase (P)Common Stock1,770USD 56.49USD 99,987SEC filing ↗
2026-05-20LUDWIG EDWARD JPurchase (P)Common Stock3,580USD 56.68USD 202,914SEC filing ↗
2026-05-20Habiger David CPurchase (P)Common Stock2,250USD 55.92USD 125,820SEC filing ↗
2026-05-19Habiger David CPurchase (P)Common Stock2,200USD 56.95USD 125,290SEC filing ↗
2026-05-07Zane Ellen MAward / grant (A)Common Stock3,800USD 0.00USD 0SEC filing ↗
2026-05-07Weber Christophe PierreAward / grant (A)Common Stock2,907USD 0.00USD 0SEC filing ↗
2026-05-07WICHMANN DAVID SAward / grant (A)Common Stock3,800USD 0.00USD 0SEC filing ↗
2026-05-07Morano Susan EAward / grant (A)Common Stock5,081USD 0.00USD 0SEC filing ↗
2026-05-07Mega Jessica LAward / grant (A)Common Stock3,800USD 0.00USD 0SEC filing ↗
2026-05-07LUDWIG EDWARD JAward / grant (A)Common Stock3,800USD 0.00USD 0SEC filing ↗
2026-05-07Habiger David CAward / grant (A)Common Stock3,800USD 0.00USD 0SEC filing ↗
2026-05-02O'Connor Padraig AndrewOption exercise / conversion (M)Common Stock1,802USD 0.00USD 0SEC filing ↗
2026-05-02O'Connor Padraig AndrewTax withholding (F)Common Stock872USD 56.50USD 49,268SEC filing ↗
2026-05-02Butcher Arthur COption exercise / conversion (M)Common Stock2,102USD 0.00USD 0SEC filing ↗
2026-05-02Butcher Arthur CTax withholding (F)Common Stock1,007USD 56.50USD 56,896SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerBSX
CIK0000885725
SectorHealthcare
IndustryMedical Devices Yahoo Finance
SEC SIC3841 Surgical & Medical Instruments & Apparatus
ExchangeNYSE

Data coverage

Local Form 4 history1,723 transaction lines from 2020-01-01 to 2026-09-02
12 P purchase lines · 274 S sale lines · 1,437 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.