Owens Corning COO covers taxes with 1,180 shares

Owens Corning’s President and COO had shares withheld for taxes on RSU vesting and now directly holds just over 52,000 OC shares.

Rhea-AI Filing Summary

Owens Corning (OC) reported a Form 4 for President and COO Todd W. Fister. On September 15, 2026, 1,180 shares of common stock were withheld at $128.67 per share to satisfy tax withholding obligations upon vesting of restricted stock units. After this tax-withholding disposition and including a prior acquisition of 219 shares through the Employee Stock Purchase Plan on May 29, 2026, Fister holds 52,137.812 shares directly. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Tax Withholding: 1,180 shares

Tax Withholding 1 txn

Insider Fister Todd W

Role President and COO

Type	Security	Shares	Price	Value
Tax Withholding	$.01 Par Value Common F1, F2	1,180	$128.67	$152K

Holdings After Transaction: $.01 Par Value Common — 52,137.812 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 219 shares through the Issuer's Employee Stock Purchase Plan, which is exempt under Rule 16b-3(c).

Key Figures

Shares withheld for taxes: 1,180 shares Per-share value for tax withholding: $128.67 per share Post-transaction direct holdings: 52,137.812 shares +1 more

4 metrics

Shares withheld for taxes 1,180 shares Withheld on September 15, 2026 for RSU tax withholding obligations

Per-share value for tax withholding $128.67 per share Value applied to the 1,180 shares withheld on September 15, 2026

Post-transaction direct holdings 52,137.812 shares Direct common stock holdings of Todd W. Fister after the reported transaction

ESPP acquisition included in holdings 219 shares Acquired May 29, 2026 through the Employee Stock Purchase Plan, exempt under Rule 16b-3(c)

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

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

Employee Stock Purchase Plan financial

"acquisition on May 29, 2026 of 219 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.

FAQ

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

What insider transaction did Owens Corning (OC) disclose for Todd W. Fister?

Owens Corning disclosed that Todd W. Fister had 1,180 shares of common stock withheld on September 15, 2026 to cover tax withholding obligations related to the vesting of restricted stock units, reported as a Form 4 code F transaction.

Was the September 15, 2026 OC insider transaction a market sale or part of a trading plan?

The filing shows a code F transaction, meaning shares were used to pay tax liabilities, not an open-market sale. The document-level box for a Rule 10b5-1 plan is unchecked, so no trading plan is reported for this transaction.

How many Owens Corning (OC) shares does Todd W. Fister hold after the reported transaction?

After the September 15, 2026 tax-withholding disposition, Todd W. Fister directly holds 52,137.812 shares of Owens Corning common stock, a figure that includes 219 shares acquired on May 29, 2026 through the Employee Stock Purchase Plan.

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

The 1,180 Owens Corning shares used for tax withholding on September 15, 2026 were valued at $128.67 per share, as reported in the Form 4 transaction details.

What is the nature of the 219 Owens Corning (OC) shares mentioned in the Form 4 footnote?

A footnote explains that 219 shares were acquired on May 29, 2026 through the issuer’s Employee Stock Purchase Plan, and that this acquisition is exempt under Rule 16b-3(c). These shares are included in the reported post-transaction holdings.

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

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

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^*

Fister Todd W

(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)

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

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		1,180(1)	D	$128.67	52,137.812(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 219 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	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)