Owens Corning (OC) director receives 750-share quarterly stock award

Rhea-AI Filing Summary

Lonergan Edward F reported acquisition or exercise transactions in this Form 4 filing.

Owens Corning director Edward F. Lonergan received an award of 750 shares of $.01 par value common stock on May 8, 2026, at a reference value of $121.67 per share. This award represents the deferred share portion of his quarterly director retainer and fees.

After this compensation grant, Lonergan directly holds a total of 54,103.421 shares of Owens Corning common stock. The transaction reflects routine, non-market compensation rather than an open-market purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Lonergan Edward F

Role null

Type	Security	Shares	Price	Value
Grant/Award	$.01 Par Value Common	750	$121.67	$91K

Holdings After Transaction: $.01 Par Value Common — 54,103.421 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares granted: 750 shares Grant reference price: $121.67 per share Total shares after transaction: 54,103.421 shares

3 metrics

Shares granted 750 shares Deferred share portion of quarterly director retainer/fees on May 8, 2026

Grant reference price $121.67 per share Value used for the 750-share award

Total shares after transaction 54,103.421 shares Edward F. Lonergan direct holdings following the grant

Key Terms

deferred share, quarterly Director retainer/fees, grant/award acquisition, $.01 Par Value Common

4 terms

deferred share financial

"Deferred share portion of quarterly Director retainer/fees."

quarterly Director retainer/fees financial

"Deferred share portion of quarterly Director retainer/fees."

grant/award acquisition financial

"transaction_action: grant/award acquisition"

$.01 Par Value Common financial

"$.01 Par Value Common"

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^*

Lonergan Edward F

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

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	05/08/2026		A		750(1)	A	$121.67	54,103.421	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. Deferred share portion of quarterly Director retainer/fees.

Remarks:

	/s/ Katherine M. Serevitch, Attorney-in-Fact	05/12/2026
	** 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 Edward F. Lonergan?

Owens Corning reported that director Edward F. Lonergan received an award of 750 common shares on May 8, 2026. The shares are part of his quarterly director compensation rather than an open-market trade.

At what value were Edward F. Lonergan’s Owens Corning deferred shares recorded?

The 750 deferred shares for director Edward F. Lonergan were recorded at $121.67 per share. This amount reflects the reference price used for the quarterly director retainer and fees paid in stock.

How many Owens Corning shares does Edward F. Lonergan hold after this transaction?

Following the grant, director Edward F. Lonergan directly holds 54,103.421 Owens Corning common shares. This updated total includes the 750-share deferred portion of his quarterly director retainer and fee award.

Was Edward F. Lonergan’s Owens Corning transaction a market purchase or sale?

The transaction was not a market purchase or sale. It was a grant of 750 deferred shares as part of Edward F. Lonergan’s quarterly director retainer and fees, categorized as compensation rather than open-market trading.

What does the footnote say about Edward F. Lonergan’s Owens Corning share award?

The footnote explains the 750-share award is the deferred share portion of quarterly director retainer and fees. This clarifies the transaction is compensation-related and routine, not a discretionary trade in Owens Corning stock.