[Form 4] BOSTON SCIENTIFIC CORP Insider Trading Activity

Rhea-AI Filing Summary

Boston Scientific (BSX) Chairman, President & CEO and Director Michael F. Mahoney filed a Form 4 reporting gifts of common stock involving trusts. On 10/29/2025, Code G entries recorded 88,197 shares (A) and 73,996 shares (A) at $0.0000, with indirect ownership noted as “By Trust.”

On 10/30/2025, a Code G entry recorded 149,992 shares (D) at $0.0000, with indirect ownership noted as “By Trust.” The footnotes state the transactions involved gifts by The Michael F. Mahoney 2 Year Qualified Annuity Trust – 2023 and – 2024, and a gift by the reporting person to The Michael F. Mahoney Term Irrevocable Trust – 2025, each administered by an independent trustee.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mahoney Michael F

(Last) (First) (Middle)

300 BOSTON SCIENTIFIC WAY

(Street)

MARLBOROUGH MA 01752-1234

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BOSTON SCIENTIFIC CORP [ BSX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman, President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
10/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/29/2025		G(1)		88,197	A	$0.0000	289,675	I	By Trust
Common Stock	10/29/2025		G(2)		73,996	A	$0.0000	363,671	I	By Trust
Common Stock	10/30/2025		G(3)		149,992	D	$0.0000	213,679	I	By Trust
Common Stock								1,476,882	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction involved a gift of securities by The Michael F. Mahoney 2 Year Qualified Annuity Trust - 2023, which is administered by an independent trustee.

2. This transaction involved a gift of securities by The Michael F. Mahoney 2 Year Qualified Annuity Trust - 2024, which is administered by an independent trustee.

3. This transaction involved a gift of securities by the reporting person to The Michael F. Mahoney Term Irrevocable Trust - 2025, which is administered by an independent trustee.

	/s/ Susan Thompson, Attorney-in-Fact	10/31/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did BSX’s CEO report on this Form 4?

Michael F. Mahoney reported gift transactions in Boston Scientific common stock involving trusts, using transaction code G.

What were the share amounts and dates reported?

On 10/29/2025: 88,197 shares (A) and 73,996 shares (A). On 10/30/2025: 149,992 shares (D). All entries used code G.

What price was reported for these transactions?

Each transaction was reported at $0.0000, consistent with gifts.

How were the holdings characterized after the transactions?

Holdings were reported as Indirect (I) with the nature of ownership noted as By Trust.

Which trusts were involved in the reported gifts?

The Michael F. Mahoney 2 Year Qualified Annuity Trust – 2023, the 2 Year Qualified Annuity Trust – 2024, and The Michael F. Mahoney Term Irrevocable Trust – 2025.

Who administers the trusts mentioned in the filing?

Each trust is administered by an independent trustee, according to the footnotes.