[Form 4] BORGWARNER INC Insider Trading Activity

Rhea-AI Filing Summary

BorgWarner Inc. vice president and chief accounting officer Amy B. Kulikowski reported routine equity compensation and related tax withholding transactions in company common stock. On February 28 and March 1, she acquired 26 and 121 shares, respectively, as grants or awards at a stated price of $0.00 per share. Footnotes explain these represent dividend reinvestments settled upon the vesting of restricted stock awards and adjustments after reconciling exempt transactions. On the same dates, 468 and 2,153 shares were disposed of at $57.57 per share to cover tax liabilities linked to those vesting events, meaning these were withholding transactions rather than open-market sales. After these moves, she directly owned 12,625 shares in one line item and 14,778 shares in another, reflecting updated beneficial ownership records.

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

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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^*

Kulikowski Amy B.

(Last) (First) (Middle)

3850 HAMLIN ROAD

(Street)

AUBURN HILLS MI 48326

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BORGWARNER INC [ BWA ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP & Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

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	02/28/2026		A		26(1)	A	$0.0000	15,125(2)	D
Common Stock	02/28/2026		F		468(3)	D	$57.57	14,657	D
Common Stock	03/01/2026		A		121(1)	A	$0.0000	14,778	D
Common Stock	03/01/2026		F		2,153(3)	D	$57.57	12,625	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. Represents shares acquired pursuant to dividend reinvestments exempt from Section 16 pursuant to Rule 16a-11 and settled upon the vesting of restricted stock awards.

2. Reflects an adjustment to the number of shares beneficially owned after a reconciliation of the Issuer's records regarding the reporting person's exempt transactions.

3. Represents shares withheld to cover taxes due upon (1) the vesting of restricted stock awards and (2) payment of dividend shares settled upon the vesting of restricted stock awards.

	Miyuki P. Oshima as attorney-in-fact for Amy B. Kulikowski	03/03/2026
	** 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).
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