Owens Corning (NYSE: OC) officer plans 900-share sale

Rhea-AI Filing Summary

Owens Corning (OC) is the issuer of common stock reported in a Form 144 notice filed for the account of officer Rachel Marcon. The notice covers a proposed sale of 900 shares of common stock, related to restricted stock vesting on 02/25/2026.

The filing also reports that during the prior three months, on 05/28/2026, 700 shares of Owens Corning common stock were sold for total proceeds of $84,497.00. Fidelity Brokerage Services LLC is listed as the broker, and the shares are listed on the NYSE.

Key Figures

Shares proposed to be sold: 900 shares Date of restricted stock vesting: 02/25/2026 Shares sold in past 3 months: 700 shares +3 more

6 metrics

Shares proposed to be sold 900 shares Common stock related to restricted stock vesting dated 02/25/2026

Date of restricted stock vesting 02/25/2026 Event associated with the 900 shares of common stock to be sold

Shares sold in past 3 months 700 shares Common stock sale reported on 05/28/2026

Aggregate sale price in past 3 months $84,497.00 Proceeds from sale of 700 shares on 05/28/2026

Issuer phone number 419-248-8000 Owens Corning issuer contact information

Issuer SEC file number 001-33100 Owens Corning registration reference

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact, Common, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 02/25/2026 | Restricted Stock Vesting | Issuer |"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as attorney-in-fact for Rachel Marcon"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

Common financial

"Common | Fidelity Brokerage Services LLC 900 Salem Street"

Securities Sold During The Past 3 Months financial

"144: Securities Sold During The Past 3 Months"

FAQ

What does Owens Corning (OC)'s latest Form 144 filing disclose?

It discloses a planned sale under Rule 144 for the account of officer Rachel Marcon, covering 900 shares of Owens Corning common stock related to restricted stock vesting on 02/25/2026, with Fidelity Brokerage Services LLC as broker.

How many Owens Corning (OC) shares are proposed to be sold in this Form 144?

The Form 144 covers a proposed sale of 900 shares of Owens Corning common stock, associated with restricted stock vesting dated 02/25/2026.

What prior Owens Corning (OC) share sales are reported in the past three months?

The filing reports that on 05/28/2026, 700 shares of Owens Corning common stock were sold, for aggregate proceeds of $84,497.00, within the three months preceding the notice.

Who is the person for whose account Owens Corning (OC) shares are to be sold?

The person is Rachel Barthelemy Marcon, identified as an officer of Owens Corning. The Form 144 indicates that the securities to be sold are for her account under Rule 144.

Which broker is handling the proposed Owens Corning (OC) Form 144 sale?

The broker identified is Fidelity Brokerage Services LLC, listed in connection with the common stock of Owens Corning to be sold on the NYSE.

On which exchange are the Owens Corning (OC) shares in this Form 144 listed?

The shares referenced in the Form 144 are Owens Corning common stock listed on the NYSE, as indicated in the securities information section.

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

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Available on EDGAR 08/28/2026 - 10:21 AM Accepted by SEC EDGAR 08/28/2026 - 10:20 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002066981
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Owens Corning
SEC File Number	001-33100
Address of Issuer	ONE OWENS CORNING PARKWAY TOLEDO OHIO 43659
Phone	419-248-8000
Name of Person for Whose Account the Securities are To Be Sold	Marcon Rachel Barthelemy
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	900	0.00	79048683	08/28/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/25/2026	Restricted Stock Vesting	Issuer			900	02/25/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Rachel Marcon One Owens Corning Parkway Toledo OH 43659	Common	05/28/2026	700	84497.00

144: Remarks and Signature

Remarks
Date of Notice	08/28/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/27/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Rachel Marcon
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)