Owens Corning (OC) CEO awarded 27,855 RSUs, 2,988 shares withheld

Rhea-AI Filing Summary

Owens Corning Chair, President and CEO Brian Chambers reported new stock-based compensation and related tax withholding. On 02/04/2026 he received 27,855 restricted stock units of $.01 par value common stock under the Owens Corning 2023 Stock Plan at $132.83 per share. On 02/05/2026, 2,988 shares were withheld at $132.23 per share to cover tax obligations when restricted stock units vested. After these transactions, he directly beneficially owned 364,785 Owens Corning common shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Chambers Brian

Role Chair, President and CEO

Type	Security	Shares	Price	Value
Tax Withholding	$.01 Par Value Common	2,988	$132.23	$395K
Grant/Award	$.01 Par Value Common	27,855	$132.83	$3.70M

Holdings After Transaction: $.01 Par Value Common — 364,785 shares (Direct)

Footnotes (1)

1. Restricted stock units granted under the Owens Corning 2023 Stock Plan. Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Chambers Brian

(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)

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

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		27,855(1)	A	$132.83	367,773	D
$.01 Par Value Common	02/05/2026		F		2,988(2)	D	$132.23	364,785	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.
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 insider transactions did Owens Corning (OC) CEO Brian Chambers report?

Brian Chambers reported a grant of 27,855 restricted stock units in Owens Corning common stock and the withholding of 2,988 shares to cover tax obligations upon vesting, leaving him with 364,785 directly held shares after the reported transactions.

How many Owens Corning shares were granted to CEO Brian Chambers in this Form 4?

He received 27,855 restricted stock units of $.01 par value Owens Corning common stock at a price of $132.83 per share, granted under the Owens Corning 2023 Stock Plan, increasing his direct beneficial ownership before tax withholding.

Why were 2,988 Owens Corning shares withheld from Brian Chambers?

The 2,988 Owens Corning shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations. This is a common administrative transaction where shares are retained instead of the insider paying cash for the associated tax liability.

How many Owens Corning shares does Brian Chambers own after these transactions?

Following the reported grant and tax withholding transactions, Brian Chambers directly beneficially owned 364,785 shares of Owens Corning $.01 par value common stock, according to the share balance listed in the Form 4 after the final transaction.

What stock plan was used for Brian Chambers’ Owens Corning grant?

The restricted stock units granted to Brian Chambers were issued under the Owens Corning 2023 Stock Plan. This plan provides equity-based compensation, such as restricted stock units, to executives and other eligible participants as part of their long-term incentive awards.