Owens Corning exec has 856 shares withheld for tax

Owens Corning (OC) reported that Nicolas Del Monaco, President, Roofing, had 856 shares of $.01 par value common stock withheld on September 15, 2026 to satisfy tax withholding obligations upon the vesting of restricted stock units.

Available on EDGAR 09/17/2026 - 04:10 PM EDT Accepted by SEC EDGAR 09/17/2026 - 04:09 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Owens Corning (OC) reported that Nicolas Del Monaco, President, Roofing, had 856 shares of $.01 par value common stock withheld on September 15, 2026 to satisfy tax withholding obligations upon the vesting of restricted stock units. The shares were valued at $128.67 per share for this withholding, and Del Monaco directly holds 26,330 shares of Owens Corning common stock after this transaction. No Rule 10b5-1 trading plan is reported for this withholding event.

Insider Trade Summary

Tax Withholding: 856 shares

Tax Withholding 1 txn

Insider Del Monaco Nicolas

Role President, Roofing

Type	Security	Shares	Price	Value
Tax Withholding	$.01 Par Value Common F1	856	$128.67	$110K

Holdings After Transaction: $.01 Par Value Common — 26,330 shares (Direct)

Footnotes (1)

1. F1. Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.

Key Figures

Shares withheld for taxes: 856 shares Withholding price per share: $128.67 per share Shares held after transaction: 26,330 shares

3 metrics

Shares withheld for taxes 856 shares Withheld September 15, 2026 upon RSU vesting to satisfy tax obligations

Withholding price per share $128.67 per share Valuation applied to the 856 shares withheld for tax withholding obligations

Shares held after transaction 26,330 shares Directly held by Nicolas Del Monaco following the September 15, 2026 withholding

Key Terms

restricted stock units, tax withholding obligations, Rule 10b5-1 trading plan

3 terms

restricted stock units financial

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

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

"to satisfy tax withholding obligations"

Rule 10b5-1 trading plan regulatory

"No Rule 10b5-1 trading plan is reported"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Owens Corning (OC) report for Nicolas Del Monaco?

Owens Corning reported that Nicolas Del Monaco had 856 shares of common stock withheld on September 15, 2026 to satisfy tax withholding obligations upon the vesting of restricted stock units.

What was the share price used for the Owens Corning (OC) tax withholding transaction?

The tax withholding transaction for Owens Corning common stock used a price of $128.67 per share applied to the 856 shares withheld upon RSU vesting.

How many Owens Corning (OC) shares does Nicolas Del Monaco hold after this Form 4 event?

After the reported withholding transaction, Nicolas Del Monaco directly holds 26,330 shares of Owens Corning $.01 par value common stock.

Was the Owens Corning (OC) insider transaction under a Rule 10b5-1 plan?

No. The filing indicates that no Rule 10b5-1 trading plan is reported in connection with this September 15, 2026 tax withholding transaction.

What was the purpose of the 856 Owens Corning (OC) shares withheld from Nicolas Del Monaco?

The 856 shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations, according to the footnote in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Del Monaco Nicolas

(Last) (First) (Middle)

ONE OWENS CORNING PKWY

(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)
	President, Roofing

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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	09/15/2026		F		856(1)	D	$128.67	26,330	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	09/17/2026
	** 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)