Owens Corning (OC) VP Doerfler has 379 shares withheld for RSU taxes

Rhea-AI Filing Summary

Owens Corning executive reports small share withholding for taxes

Owens Corning Vice President and Controller Mari Doerfler reported an automatic withholding of 379 shares of $.01 par value common stock on 02/02/2026, coded as an "F" transaction. The shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations, rather than sold in an open-market trade. Following this tax-related withholding, Doerfler beneficially owned 4,860 Owens Corning common shares 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

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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)
02/02/2026

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	02/02/2026		F		379(1)	D	$122.17	4,860	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. Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.

Remarks:

	/s/ Katherine M. Serevitch, Attorney-in-Fact	02/04/2026
	** 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).
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FAQ

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

Owens Corning reported that Vice President and Controller Mari Doerfler had 379 common shares withheld on February 2, 2026. The shares were retained by the company to cover tax withholding tied to vesting restricted stock units, not sold on the open market.

What does transaction code "F" mean in the Owens Corning (OC) Form 4?

Transaction code "F" on the Owens Corning Form 4 indicates shares were withheld to pay taxes on an equity award. In this case, 379 common shares were automatically withheld upon restricted stock unit vesting to satisfy tax withholding obligations for executive Mari Doerfler.

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

After the reported tax withholding transaction, Mari Doerfler beneficially owns 4,860 Owens Corning common shares directly. This figure reflects the remaining holdings following the 379-share withholding tied to the vesting of restricted stock units on February 2, 2026.

Was the Owens Corning (OC) insider transaction an open-market sale?

No, the Owens Corning insider transaction was not an open-market sale. The Form 4 shows 379 shares were withheld automatically to cover tax withholding upon vesting of restricted stock units, rather than being voluntarily sold on a stock exchange.

Which Owens Corning (OC) executive is involved in this Form 4 filing?

The Form 4 filing involves Mari Doerfler, who serves as Owens Corning’s Vice President and Controller. She reported a routine tax-related share withholding transaction connected to the vesting of restricted stock units on February 2, 2026.

Does the Owens Corning (OC) Form 4 indicate derivative security activity?

No derivative security transactions are reported in this Form 4. The filing only shows a non-derivative common stock transaction, where 379 shares were withheld to satisfy tax obligations arising from vesting restricted stock units for executive Mari Doerfler.