Owens Corning (NYSE: OC) officer to sell $129,663 in stock

Rhea-AI Filing Summary

Owens Corning (OC) is the issuer of common stock covered by a Form 144/A amendment filed for the account of officer Rachel Barthelemy Marcon. The notice reflects a proposed sale through Fidelity Brokerage Services LLC of 900 shares of common stock, with an aggregate market value of $129,663.00, to be sold on or after August 28, 2026 on the NYSE. The securities to be sold arise from restricted stock vesting on February 25, 2026. The filing states that this amendment supersedes a prior notice filed on August 28, 2026 to add the aggregate market value.

The notice also lists a sale in the past three months, showing that Rachel Marcon sold 700 shares of common stock on May 28, 2026 for total proceeds of $84,497.00. The Form 144 is signed by Daniel Tucci as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Rachel Marcon.

Key Figures

Shares to be sold: 900 shares of common stock Aggregate market value: $129,663.00 Date of restricted stock vesting: February 25, 2026 +3 more

6 metrics

Shares to be sold 900 shares of common stock Proposed sale under Rule 144 on or after August 28, 2026

Aggregate market value $129,663.00 For 900 Owens Corning common shares to be sold

Date of restricted stock vesting February 25, 2026 Source of the 900 shares to be sold

Shares sold in past 3 months 700 shares of common stock Sold on May 28, 2026

Proceeds from prior sale $84,497.00 Total for 700 shares sold on May 28, 2026

Date of notice August 28, 2026 Date associated with the Form 144/A notice

Key Terms

Rule 144, restricted stock vesting, aggregate market value, attorney-in-fact, +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.

aggregate market value financial

"the Aggregate Market Value was added."

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

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.

Form 144 regulatory

"144/A: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

What does the Form 144/A filing for Owens Corning (OC) disclose?

It discloses that officer Rachel Barthelemy Marcon plans to sell 900 shares of Owens Corning common stock through Fidelity Brokerage Services LLC, with an aggregate market value of $129,663.00, in transactions on or after August 28, 2026 on the NYSE.

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

The notice covers a proposed sale of 900 shares of Owens Corning common stock. These shares come from restricted stock vesting on February 25, 2026 and are planned to be sold as compensation-related stock under Rule 144.

What aggregate market value is reported for the Owens Corning (OC) shares in this Form 144/A?

The filing reports an aggregate market value of $129,663.00 for the 900 shares of Owens Corning common stock to be sold. The amendment specifically states that it amends and supersedes an earlier notice to add this aggregate market value figure.

What prior Owens Corning (OC) stock sales by Rachel Marcon are disclosed?

The filing lists a sale in the past three months where 700 shares of Owens Corning common stock were sold on May 28, 2026 for total proceeds of $84,497.00. This historical sale is disclosed in the “Securities Sold During The Past 3 Months” section.

Who is executing the Owens Corning (OC) Form 144/A sale and who signed the notice?

The proposed sale is to be executed through Fidelity Brokerage Services LLC. The notice is signed by Daniel Tucci, described as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Rachel Marcon.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/28/2026 - 10:45 AM Accepted by SEC EDGAR 08/28/2026 - 10:45 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/A

144/A: Filer Information

Filer CIK	0002066981
Filer CCC	XXXXXXXX
Previous Accession Number Of The Filing	0001959173-26-006512
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144/A: 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/A: 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	129663.00	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/A: 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/A: 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/A: Remarks and Signature

Remarks	This form 144 amends and supersedes the form 144 filed on 08/28/2026 the Aggregate Market Value was added.
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)