Owens Corning (NYSE: OC) insider reports 1,070-share tax withholding

Rhea-AI Filing Summary

Owens Corning executive Jose Manuel Canovas De La Nuez, President, Insulation, reported a tax-withholding disposition of 1,070 shares of $.01 par value common stock on July 28, 2026 at $143.13 per share, with shares withheld upon vesting of restricted stock units to satisfy tax obligations.

After this transaction, he held 15,705 shares directly, including 140 shares acquired on May 29, 2026 through the company’s Employee Stock Purchase Plan, which was exempt under Rule 16b-3(c).

Insider Trade Summary

Net Seller: 1,070 shares

Net Sell 1 txn

Insider Canovas De La Nuez Jose Manuel

Role President, Insulation

Type	Security	Shares	Price	Value
Tax Withholding	$.01 Par Value Common F1, F2	1,070	$143.13	$153K

Holdings After Transaction: $.01 Par Value Common — 15,705 shares (Direct)

Footnotes (2)

1. F1. Shares withheld upon vesting of restricted stock units to satisfy tax withholding obligations.
2. F2. The total amount of holdings reflects an acquisition on May 29, 2026 of 140 shares through the Issuer's Employee Stock Purchase Plan, which is exempt under Rule 16b-3(c).

Key Figures

Shares withheld for taxes: 1,070 shares Tax withholding price: $143.13 per share Direct holdings after transaction: 15,705 shares +1 more

4 metrics

Shares withheld for taxes 1,070 shares Shares withheld upon vesting of restricted stock units on July 28, 2026

Tax withholding price $143.13 per share Valuation per share for the 1,070 withheld Owens Corning shares

Direct holdings after transaction 15,705 shares Direct Owens Corning common shares held after the July 28, 2026 disposition

ESPP acquisition included in holdings 140 shares Shares acquired May 29, 2026 through the Employee Stock Purchase Plan included in total holdings

Key Terms

restricted stock units, tax withholding obligations, Employee Stock Purchase Plan, Rule 16b-3(c)

4 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."

Employee Stock Purchase Plan financial

"acquisition on May 29, 2026 of 140 shares through the Issuer's Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Rule 16b-3(c) regulatory

"which is exempt under Rule 16b-3(c)."

An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/30/2026 - 04:11 PM Accepted by SEC EDGAR 07/30/2026 - 04:10 PM Learn about SEC filing dates

FAQ

What insider transaction involving Owens Corning (OC) did Jose Manuel Canovas De La Nuez report?

He reported a tax-withholding disposition of 1,070 shares of Owens Corning $.01 par value common stock on July 28, 2026, linked to the vesting of restricted stock units and used to satisfy associated tax obligations.

How many Owens Corning (OC) shares does Jose Manuel Canovas De La Nuez hold after the reported transaction?

Following the tax-withholding disposition, he directly holds 15,705 Owens Corning shares. This total includes 140 shares acquired on May 29, 2026 through the company’s Employee Stock Purchase Plan, as noted in the transaction footnotes.

Why were 1,070 Owens Corning (OC) shares disposed of in this insider report?

The 1,070 shares were withheld upon vesting of restricted stock units to satisfy tax withholding obligations. This indicates the shares were not sold on the open market but used specifically to cover the executive’s tax liability.

At what price were the withheld Owens Corning (OC) shares valued for the tax obligation?

The 1,070 withheld shares were valued at $143.13 per share. This per-share value is used in the report to quantify the tax-withholding disposition associated with the vesting of the executive’s restricted stock units.

What does the footnote about the Employee Stock Purchase Plan mean for Owens Corning (OC) holdings?

A footnote explains that the 15,705-share total includes 140 shares acquired on May 29, 2026 through an Employee Stock Purchase Plan, which is described as exempt under Rule 16b-3(c) for reporting purposes.

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^*

Canovas De La Nuez Jose Manuel

(Last) (First) (Middle)

ONE OWENS CORNING PARKWAY

(Street)

TOLEDO OHIO 43659-0001

(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, Insulation

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/28/2026

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	07/28/2026		F		1,070(1)	D	$143.13	15,705(2)	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.

2. The total amount of holdings reflects an acquisition on May 29, 2026 of 140 shares through the Issuer's Employee Stock Purchase Plan, which is exempt under Rule 16b-3(c).

Remarks:

	/s/ Katherine M. Serevitch, Attorney-in-Fact	07/30/2026
	** 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)