Todd W. Fister - 02 Feb 2026 Form 4 Insider Report for Owens Corning (OC)

Role: EVP & Chief Financial Officer
Signature: /s/ Katherine M. Serevitch, Attorney-in-Fact
Issuer symbol: OC
Transactions as of: 02 Feb 2026
Net transactions value: -$219,539
Form type: 4
Filing time: 04 Feb 2026, 16:20:40 UTC
Previous filing: 09 Apr 2025
Next filing: 06 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fister Todd W	EVP & Chief Financial Officer	ONE OWENS CORNING PARKWAY, TOLEDO	/s/ Katherine M. Serevitch, Attorney-in-Fact	04 Feb 2026	0001575676

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OC	$.01 Par Value Common	Tax liability	$219,539	-1,797	-5.1%	$122.17	33,219	02 Feb 2026	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
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).