Nicolas del Monaco - 21 Jul 2025 Form 4 Insider Report for Owens Corning (OC)

Role: President, Roofing
Signature: /s/ Katherine M. Serevitch, Attorney-in-Fact
Issuer symbol: OC
Transactions as of: 21 Jul 2025
Net transactions value: +$249,904
Form type: 4
Filing time: 23 Jul 2025, 16:10:52 UTC
Previous filing: 25 Feb 2025
Next filing: 04 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Del Monaco Nicolas	President, Roofing	ONE OWENS CORNING PKWY, TOLEDO	/s/ Katherine M. Serevitch, Attorney-in-Fact	23 Jul 2025	0001992511

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OC	$.01 Par Value Common	Award	$249,904	+1,813	+13%	$137.84	15,715	21 Jul 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units granted under the Owens Corning 2023 Stock Plan.
F2	The total amount of holdings reflects an acquisition on May 30, 2025 of 122 shares through the Issuer's Employee Stock Purchase Plan which is exempt under Rule 16b-3(c).