Owens Corning (NYSE: OC) VP receives stock units and withholds shares for taxes

Rhea-AI Filing Summary

Owens Corning vice president and controller Mari Doerfler reported routine equity compensation activity. On February 4, 2026, she acquired 1,473 shares of $.01 par value common stock at $132.83 per share, reflecting restricted stock units granted under the Owens Corning 2023 Stock Plan.

On February 5, 2026, 147 shares were withheld at $132.23 per share to cover tax withholding when restricted stock units vested. After these transactions, she held 6,186 shares of Owens Corning common stock directly.

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^*

Doerfler Mari

(Last) (First) (Middle)

ONE OWENS CORNING PARKWAY

(Street)

TOLEDO OH 43659

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Owens Corning [ OC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Vice President and Controller

3. Date of Earliest Transaction (Month/Day/Year)
02/04/2026

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
$.01 Par Value Common	02/04/2026		A		1,473(1)	A	$132.83	6,333	D
$.01 Par Value Common	02/05/2026		F		147(2)	D	$132.23	6,186	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. Restricted stock units granted under the Owens Corning 2023 Stock Plan.

2. Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.

Remarks:

	/s/ Katherine M. Serevitch, Attorney-in-Fact	02/06/2026
	** 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).
** 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.
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FAQ

What insider transactions did Owens Corning (OC) report for Mari Doerfler?

Owens Corning reported that vice president and controller Mari Doerfler acquired 1,473 shares of common stock from restricted stock units, then had 147 shares withheld for taxes upon vesting. After these transactions, she directly owned 6,186 Owens Corning common shares.

How many Owens Corning (OC) shares does Mari Doerfler own after this Form 4?

Following the reported transactions, Mari Doerfler directly owns 6,186 shares of Owens Corning $.01 par value common stock. This figure reflects both the grant of 1,473 shares from restricted stock units and the withholding of 147 shares to satisfy tax obligations at vesting.

What was the nature of the 1,473-share acquisition by Owens Corning (OC) executive Mari Doerfler?

The 1,473 shares reported as acquired by Mari Doerfler represent restricted stock units granted under the Owens Corning 2023 Stock Plan. These units convert into common shares, providing equity-based compensation tied to the company’s $.01 par value common stock.

Why were 147 Owens Corning (OC) shares withheld in Mari Doerfler’s Form 4?

The 147 shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations. Instead of paying cash taxes separately, a portion of the vested shares was retained, a standard method for covering payroll and income tax on equity compensation.

What transaction codes appear in Mari Doerfler’s Owens Corning (OC) Form 4?

The Form 4 uses code “A” for the acquisition of 1,473 shares tied to restricted stock units and code “F” for the 147 shares withheld for taxes at vesting. Both transactions involve Owens Corning $.01 par value common stock held directly.

Which compensation plan governs the reported restricted stock units at Owens Corning (OC)?

The restricted stock units reported for Mari Doerfler were granted under the Owens Corning 2023 Stock Plan. This plan provides equity awards, such as restricted stock units, that deliver shares of the company’s common stock as part of executive and employee compensation.