Owens Corning (OC) VP Doerfler has 1,167 RSU shares withheld for taxes

Rhea-AI Filing Summary

Owens Corning Vice President and Controller Mari Doerfler reported a routine tax-withholding share disposition related to equity compensation. On the vesting of restricted stock units, 1,167 shares of $.01 par value common stock were withheld at a price of $106.28 per share to cover tax obligations. After this non-market transaction, she directly holds 5,019 common shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Doerfler Mari

Role Vice President and Controller

Type	Security	Shares	Price	Value
Tax Withholding	$.01 Par Value Common	1,167	$106.28	$124K

Holdings After Transaction: $.01 Par Value Common — 5,019 shares (Direct)

Footnotes (1)

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Key Figures

Shares withheld for taxes: 1,167 shares Transaction price per share: $106.28 per share Shares owned after transaction: 5,019 shares

3 metrics

Shares withheld for taxes 1,167 shares Withheld upon RSU vesting to satisfy tax obligations

Transaction price per share $106.28 per share Value used for the tax-withholding disposition

Shares owned after transaction 5,019 shares Direct holdings following the Form 4 event

Key Terms

restricted stock units, tax withholding obligations, Form 4

3 terms

restricted stock units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

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

Form 4 regulatory

"This was recorded as a Form 4 transaction coded "F," indicating payment of tax liability by delivering securities."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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^*

Doerfler Mari

(Last) (First) (Middle)

ONE OWENS CORNING PARKWAY

(Street)

TOLEDO OHIO 43659

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/06/2026

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

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

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

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	04/06/2026		F		1,167(1)	D	$106.28	5,019	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	04/08/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

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

Owens Corning reported that Mari Doerfler had 1,167 shares of common stock withheld to satisfy tax obligations on vested restricted stock units. This was recorded as a Form 4 transaction coded "F," indicating payment of tax liability by delivering securities.

Was the Owens Corning (OC) Form 4 transaction an open-market sale?

No, the Form 4 transaction was not an open-market sale. Shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations, meaning the shares went back to the company rather than being sold in the market.

How many Owens Corning (OC) shares were withheld for Mari Doerfler’s taxes?

A total of 1,167 shares of Owens Corning $.01 par value common stock were withheld to cover Mari Doerfler’s tax obligations arising from vesting restricted stock units, according to the Form 4 transaction data and accompanying footnote.

What price per share was used in the Owens Corning (OC) tax-withholding transaction?

The tax-withholding disposition used a price of $106.28 per share for the 1,167 Owens Corning common shares withheld. This price is reported in the Form 4 as the transaction price per share for the non-derivative security involved.

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

After the tax-withholding disposition, Mari Doerfler directly holds 5,019 shares of Owens Corning common stock. This post-transaction balance is disclosed in the Form 4 as the total number of non-derivative shares owned following the reported event.

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

Transaction code "F" on the Owens Corning Form 4 indicates payment of exercise price or tax liability by delivering securities. Here, it reflects shares withheld upon vesting of restricted stock units to satisfy Mari Doerfler’s tax withholding obligations.