OC / Owens Corning - Документы SEC, Годовой отчет, Доверенное заявление

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact na

Restricted Stock Unit Award Agreement, by and between Owens Corning and Marcio Sandri, dated as of June 18, 2025 (filed herewith).

Exhibit 10.2 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to Marcio Sandri (the “Holder”), as of June 18, 2025 (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), 4,282 restricted stock units (the “Units”) relating to sh

Owens Corning Delivers Strong Second-Quarter Results from Continuing Operations

Exhibit 99.1 Owens Corning Delivers Strong Second-Quarter Results from Continuing Operations TOLEDO, Ohio – August 6, 2025 – Owens Corning (NYSE: OC), a building products leader, today reported second-quarter 2025 results. •Reported Net Sales from Continuing Operations of $2.7 Billion, a 10% Increase from Prior Year, including the Impact of the Doors Business, Acquired in May 2024 •Generated Net E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2025 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

Owens Corning Amended and Restated Deferred Compensation Plan, effective as of July 1, 2025 (filed herewith).

Exhibit 10.1 OWENS CORNING DEFERRED COMPENSATION PLAN (As amended and restated, effective July 1, 2025) SECTION 1 General 1.1 Purpose. The Owens Corning Deferred Compensation Plan (the “Plan”) has been established by Owens Corning (the “Company”) to provide non-employee directors and certain management employees with an opportunity to save in a tax effective manner and thereby aiding in competitiv

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 16, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

Conflict Minerals Report for the reporting period January 1, 2024 to December 31, 2024

EXHIBIT 1.01 Owens Corning Conflict Minerals Report For the reporting period from January 1, 2024 to December 31, 2024 This Conflict Minerals Report (this “Report”) of Owens Corning (collectively with its consolidated subsidiaries, the “Company,” “we,” “us,” or “our”) has been prepared pursuant to Rule 13p-1 and Form SD promulgated under the Securities Exchange Act of 1934, as amended, for the rep

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.) One Owens Corning Parkway Toledo, Ohio 43659 (Address of principal executive offices) (Zip

Form of Owens Corning Long-Term Incentive Program Award Agreement pursuant to the Owens Corning 2023 Stock Plan for Restricted Stock Unit Awards for grants beginning in 2025 (filed herewith).

Exhibit 10.3 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] restricted stock units (th

First Amendment to Second Amended and Restated Credit Agreement, dated as of March 5, 2025, by and among Owens Corning, as borrower, the lenders signatory thereto and Wells Fargo Bank, National Association, as administrative agent (filed herewith).

Exhibit 10.1 EXECUTION VERSION This FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”) is dated as of March 5, 2025 and is by and among (i) OWENS CORNING, a Delaware corporation (the “Borrower”); (ii) the First Amendment Lenders; and (iii) WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent (in such capacity, the “Administrative Agent”). Unless otherwise

Owens Corning Delivers Strong Revenue and Margin Performance from Continuing Operations in the First Quarter

Exhibit 99.1 Owens Corning Delivers Strong Revenue and Margin Performance from Continuing Operations in the First Quarter TOLEDO, Ohio – May 7, 2025 – Owens Corning (NYSE: OC), a building products leader, today reported first-quarter 2025 results. •Reported Net Sales from Continuing Operations of $2.5 Billion, a 25% Increase from Prior Year, with Newly Acquired Doors Business Contributing $540 Mil

Form of Owens Corning Restricted Stock Unit Award Agreement for grants beginning in 2025 (filed herewith).

Exhibit 10.4 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] restricted stock units (th

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2025 Owens Corning (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

Form of Owens Corning Long-Term Incentive Program Award Agreement pursuant to the Owens Corning 2023 Stock Plan for Performance Share Unit Awards for grants beginning in 2025 (filed herewith).

Exhibit 10.2 PERFORMANCE SHARE UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN PERFORMANCE SHARE UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] share-settled Performanc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact n

Owens Corning and Subsidiaries Recast Segment Information

Exhibit 99.1 Owens Corning and Subsidiaries Recast Segment Information (unaudited) Roofing The table below provides a summary of net sales and EBITDA for the Roofing segment: Three Months Ended Twelve Months Ended (in millions) March 31, 2024 June 30, 2024 September 30, 2024 December 31, 2024 December 31, 2024 Net sales $ 1,098 $ 1,252 $ 1,221 $ 1,059 $ 4,630 EBITDA 338 437 419 338 1,532 EBITDA as

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2025 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

As filed with the Securities and Exchange Commission on April 3, 2025

As filed with the Securities and Exchange Commission on April 3, 2025 Registration No.

Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 31, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. __)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party Other Than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

Fourth Amended and Restated Bylaws (as amended) of Owens Corning (

FOURTH AMENDED AND RESTATED BYLAWS (AS AMENDED) OF OWENS CORNING AUGUST 26, 2024 FOURTH AMENDED AND RESTATED BYLAWS (AS AMENDED) OF OWENS CORNING ARTICLE I STOCKHOLDERS Section 1.

Insider Trading Policy of Owens Corning (filed herewith).

Owens Corning Business Conduct Policy Insider Trading Policy & Pre-Clearance Process This policy is maintained by the Legal Department and was last updated April 2023.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

Owens Corning Delivers Full-Year Net Sales of $11.0 Billion; Generates Earnings of $647 Million and Adjusted EBIT of $2.0 Billion

Exhibit 99.1 Owens Corning Delivers Full-Year Net Sales of $11.0 Billion; Generates Earnings of $647 Million and Adjusted EBIT of $2.0 Billion TOLEDO, Ohio – February 24, 2025 - Owens Corning (NYSE: OC), a residential and commercial building products leader, today reported fourth-quarter and full-year 2024 results. •Reported Net Sales of $11.0 Billion, a 13% Increase from Prior Year, with Newly Ac

Subsidiaries of Owens Corning (filed herewith).

Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2024) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada 0993477 B.C. Unlimited Liability Company Canada AS Paroc Estonia BetterDoor, LLC United States Bridgeview Investments LLC United States Crown Door Corp Canada Deutsche FOAMGLAS GmbH Germany Door Installation Specialists Corporation United States Door-Stop In

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Material Impairments, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2025 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 4, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Owens Corning Delivers Net Sales of $3.0 Billion; Generates Net Earnings of $321 Million and Adjusted EBIT of $582 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $3.0 Billion; Generates Net Earnings of $321 Million and Adjusted EBIT of $582 Million TOLEDO, Ohio – November 6, 2024 – Owens Corning (NYSE: OC), a residential and commercial building products leader, today reported third-quarter 2024 results. •Reported Net Sales of $3.0 Billion, a 23% Increase from Prior Year, with Newly Acquired Doors Business Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2024 Owens Corning (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Form of Directors' Indemnification Agreement

Exhibit 10.1 DIRECTORS' INDEMNIFICATION AGREEMENT AGREEMENT, effective as of between Owens Corning, a Delaware corporation (the "Company"), and (the "Indemnitee"). WHEREAS, it is essential to the Company to retain and attract as directors the most capable persons available; WHEREAS, Indemnitee is a director of the Company; WHEREAS, both the Company and Indemnitee recognize the increased risk of li

Fourth Amended and Restated Bylaws (as amended) of Owens Corning

EXHIBIT 3.1 FOURTH AMENDED AND RESTATED BYLAWS (AS AMENDED) OF OWENS CORNING JUNE 15, 2023 AUGUST 26, 2024 FOURTH AMENDED AND RESTATED BYLAWS (AS AMENDED) OF OWENS CORNING ARTICLE I STOCKHOLDERS Section 1.1 Annual Meeting. An annual meeting of the stockholders of Owens Corning (the “Corporation”), for the election of directors to succeed those whose terms expire and for the transaction of such oth

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 26, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R

Owens Corning Delivers Net Sales of $2.8 Billion; Generates Net Earnings of $285 Million and Adjusted EBIT of $588 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.8 Billion; Generates Net Earnings of $285 Million and Adjusted EBIT of $588 Million TOLEDO, Ohio – August 6, 2024 – Owens Corning (NYSE: OC), a global residential and commercial building products leader, today reported second-quarter 2024 results. These results include performance of the company’s newly added Doors segment, which was established

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PU

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-

$373,155,000 Owens Corning Offer to Exchange All of the Outstanding Restricted 3.50% Senior Notes due 2030 Issued on May 22, 2024 Newly Issued and Registered 3.50% Senior Notes due 2030

Filed Pursuant to Rule 424(b)(3) Registration No. 333-280549 $373,155,000 Owens Corning Offer to Exchange All of the Outstanding Restricted 3.50% Senior Notes due 2030 Issued on May 22, 2024 for Newly Issued and Registered 3.50% Senior Notes due 2030 On May 22, 2024, we issued $373,155,000 aggregate principal amount of restricted 3.50% senior notes due 2030, which we refer to herein as the “Origin

July 9, 2024

July 9, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, DC 20549 Re: Owens Corning Registration Statement on Form S-4 (Registration No.

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 3.

Form of Letter of Transmittal.

Exhibit 99.1 OWENS CORNING LETTER OF TRANSMITTAL Offer to Exchange up to $373,155,000 Aggregate Principal Amount of Newly Issued 3.50% Senior Notes due 2030 (CUSIP No. 690742 AM3) for a Like Principal Amount of Outstanding Restricted 3.50% Senior Notes due 2030 Issued on May 22, 2024 (CUSIP Nos. 690742 AL5 and U6907L AA9). THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON , 2024,

June 28, 2024

June 28, 2024 Correspondence Filing Via EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

Owens Corning Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY Each of the directors and officers of Owens Corning, a Delaware corporation (the “Registrant”), whose signature appears below constitutes and appoints Brian Chambers, Todd Fister, and Gina Beredo, and each of them, his/her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, to execute in each such director’s and officer’s

Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Trustee on Form T-1.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) [] COMPUTERSHARE TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of trustee as specified in its charter)

As filed with the Securities and Exchange Commission on June 28, 2024

As filed with the Securities and Exchange Commission on June 28, 2024 Registration No.

Fourteenth Supplemental Indenture, dated as of May 31, 2024, by and between Owens Corning and Computershare Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.1 to Owens Corning's Current Report on Form 8-K (File No. 1-33100), filed May 31, 2024).

Exhibit 4.1 FOURTEENTH SUPPLEMENTAL INDENTURE Dated as of May 31, 2024 Between OWENS CORNING, As Issuer and COMPUTERSHARE TRUST COMPANY, N.A., As Trustee 5.500% Senior Notes Due 2027 THIS FOURTEENTH SUPPLEMENTAL INDENTURE (the “Fourteenth Supplemental Indenture”), dated as of May 31, 2024, between OWENS CORNING, a Delaware corporation (“Company”), and COMPUTERSHARE TRUST COMPANY, N.A., as successo

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 31, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

Sixteenth Supplemental Indenture, dated as of May 31, 2024, by and between Owens Corning and Computershare Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.5 to Owens Corning's Current Report on Form 8-K (File No. 1-33100), filed May 31, 2024).

Exhibit 4.5 SIXTEENTH SUPPLEMENTAL INDENTURE Dated as of May 31, 2024 Between OWENS CORNING, As Issuer and COMPUTERSHARE TRUST COMPANY, N.A., As Trustee 5.950% Senior Notes Due 2054 THIS SIXTEENTH SUPPLEMENTAL INDENTURE (the “Sixteenth Supplemental Indenture”), dated as of May 31, 2024, between OWENS CORNING, a Delaware corporation (“Company”), and COMPUTERSHARE TRUST COMPANY, N.A., as successor t

Underwriting Agreement, dated as of May 29, 2024, by and among Owens Corning and Morgan Stanley & Co. LLC, BofA Securities, Inc., Citigroup Global Markets Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein.

Exhibit 1.1 Execution Version OWENS CORNING (a Delaware corporation) 5.500% Senior Notes due 2027 5.700% Senior Notes due 2034 5.950% Senior Notes due 2054 UNDERWRITING AGREEMENT Dated: May 29, 2024 TABLE OF CONTENTS Page Section 1.   Representations and Warranties 4 (a) Representations and Warranties by the Company 4 Section 2. Sale and Delivery to Underwriters; Closing 16 (a) Securities 16 (b) P

Calculation of Filing Fee Tables (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount R

Exhibit 107 Calculation of Filing Fee Tables 424(b)(2) (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee(1) Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Debt 5.

Fifteenth Supplemental Indenture, dated as of May 31, 2024, by and between Owens Corning and Computershare Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.3 to Owens Corning's Current Report on Form 8-K, (File No. 1-33100), filed May 31, 2024).

Exhibit 4.3 FIFTEENTH SUPPLEMENTAL INDENTURE Dated as of May 31, 2024 Between OWENS CORNING, As Issuer and COMPUTERSHARE TRUST COMPANY, N.A., As Trustee 5.700% Senior Notes Due 2034 THIS FIFTEENTH SUPPLEMENTAL INDENTURE (the “Fifteenth Supplemental Indenture”), dated as of May 31, 2024, between OWENS CORNING, a Delaware corporation (“Company”), and COMPUTERSHARE TRUST COMPANY, N.A., as successor t

$2,000,000,000 Owens Corning $500,000,000 5.500% Senior Notes due 2027 $800,000,000 5.700% Senior Notes due 2034 $700,000,000 5.950% Senior Notes due 2054

Filed Pursuant to Rule 424(b)(2) Registration No. 333-279742 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 28, 2024) $2,000,000,000 Owens Corning $500,000,000 5.500% Senior Notes due 2027 $800,000,000 5.700% Senior Notes due 2034 $700,000,000 5.950% Senior Notes due 2054 We are offering $500,000,000 aggregate principal amount of 5.500% Senior Notes due 2027, which we refer to in this prospectus s

Owens Corning Pricing Term Sheet

Filed Pursuant to Rule 433 Dated as of May 29, 2024 Registration Statement No. 333-279742 Term Sheet to Preliminary Prospectus Supplement dated May 28, 2024 Owens Corning Pricing Term Sheet This pricing term sheet to the preliminary prospectus supplement dated May 28, 2024 should be read together with the preliminary prospectus supplement before making a decision in connection with an investment i

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3ASR (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

Subject to Completion Preliminary Prospectus Supplement dated May 28, 2024

Filed Pursuant to Rule 424(b)(5) Registration No. 333-279742 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Com

As filed with the Securities and Exchange Commission on May 28, 2024

As filed with the Securities and Exchange Commission on May 28, 2024 Registration No.

Owens Corning Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY Each of the officers and directors of Owens Corning, a Delaware corporation (the “Registrant”), whose signature appears below constitutes and appoints Brian Chambers, Todd Fister, and Gina Beredo, and each of them, his/her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, to sign, execute and file with the Securities an

Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Trustee on Form T-1.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) [] COMPUTERSHARE TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of trustee as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation or

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive of

Registration Rights Agreement, dated as of May 22, 2024, by and among Owens Corning, Morgan Stanley & Co. LLC and Wells Fargo Securities, LLC (incorporated by reference to Exhibit 4.3 to Owens Corning's Current Report on Form 8-K (File No. 1-33100), filed May 22, 2024).

Exhibit 4.3 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this “Agreement”) is made and entered into as of May 22, 2024, by and among Owens Corning, a Delaware corporation (the “Company”) and Morgan Stanley & Co. LLC, as the lead dealer manager and Wells Fargo Securities, LLC, as the co-dealer manager (together, the “Dealer Managers”) pursuant to the Dealer Manager Agreement (a

Thirteenth Supplemental Indenture, dated as of May 22, 2024, by and between Owens Corning and Computershare Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Owens Corning's Current Report on From 8-K (File No. 1-33100), filed May 22, 2024).

Exhibit 4.1 THIRTEENTH SUPPLEMENTAL INDENTURE Dated as of May 22, 2024 Between OWENS CORNING, As Issuer and COMPUTERSHARE TRUST COMPANY, N.A., As Trustee 3.50% Senior Notes Due 2030 THIS THIRTEENTH SUPPLEMENTAL INDENTURE (the “Thirteenth Supplemental Indenture”), dated as of May 22, 2024, between OWENS CORNING, a Delaware corporation (“Company”), and COMPUTERSHARE TRUST COMPANY, N.A., as successor

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 22, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

Calculation of Filing Fee Table

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Newly Registered Securities Security Type Security Class Title Fee  Calculation  Rule Amount Registered(1) Proposed Maximum  Offering Price  Per Unit  Maximum Aggregate  Offering Price  Fee Rate  Amount of Registration Fee Equity Common  Stock, par value  $0.

Masonite International Corporation 2021 Omnibus Incentive Plan (incorporated by reference to Exhibit 99.1 to Owens Corning's Registration Statement on Form S-8 (File No. 333-279408), filed May 15, 2024).

EX-99.1 Exhibit 99.1 MASONITE INTERNATIONAL CORPORATION 2021 OMNIBUS INCENTIVE PLAN ARTICLE I PURPOSE The purpose of this Masonite International Corporation 2021 Omnibus Incentive Plan is to enhance the profitability and value of the Company for the benefit of its stockholders by enabling the Company to offer Eligible Individuals cash and stock-based incentives in order to attract, retain and rewa

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned directors and officers of Owens Corning, a Delaware corporation (the “Registrant”), does hereby constitute and appoint each of Brian D. Chambers, Gina A. Beredo and Todd W. Fister, or any of them, each acting alone, as the true and lawful attorney-in-fact or attorneys-in-fact for each of the undersigned

Owens Corning Completes Acquisition of Masonite, Strengthening Leadership in Building and Construction Materials

Exhibit 99.1 Owens Corning Completes Acquisition of Masonite, Strengthening Leadership in Building and Construction Materials • Expands Owens Corning’s leadership position in branded residential products with a complementary line of innovative interior and exterior doors and door systems • Creates a scalable new growth platform leveraging combined commercial, operational, and innovation capabiliti

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 15, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

As filed with the Securities and Exchange Commission on May 15, 2024

S-8 As filed with the Securities and Exchange Commission on May 15, 2024 Registration No.

UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION

Exhibit 99.1 UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION Acquisition of Masonite International Corporation On February 8, 2024, Owens Corning entered into an arrangement agreement (as it may be amended from time to time, the (“Arrangement Agreement”), among Owens Corning, MT Acquisition Co ULC, an indirect wholly owned subsidiary of Owens Corning (“Purchaser”), and Masonite International Co

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S.

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

Second Amended and Restated Performance Guaranty, dated as of March 1, 2024, between Owens Corning, as performance guarantor and PNC Bank, National Association, as administrator (filed herewith).

Exhibit 10.4 SECOND AMENDED AND RESTATED PERFORMANCE GUARANTY This SECOND AMENDED AND RESTATED PERFORMANCE GUARANTY (as amended, supplemented or otherwise modified from time to time, this “Performance Guaranty”), dated as of March 1, 2024, is made by OWENS CORNING, a Delaware corporation (the “Performance Guarantor”), in favor of PNC Bank, National Association (“PNC”), as administrator (together w

Form of Owens Corning Restricted Stock Unit Award Agreement for grants beginning in 2024 (filed herewith).

Exhibit 10.9 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] restricted stock units (th

Agreement, by and between Owens Corning and Marcio Sandri, dated as of February 1, 2024

Exhibit 10.10 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to Marcio Sandri (the “Holder”), as of February 1, 2024 (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), 8,350 restricted stock units (the “Units”) relating t

Form of Owens Corning Long-Term Incentive Program Award Agreement pursuant to the Owens Corning 2023 Stock Plan for Restricted Stock Unit Awards for grants beginning in 2024 (incorporated by reference to Exhibit 10.8 to Owens Corning’s Quarterly Report on Form 10-Q (File No. 1-33100), for the quarter ended March 31, 2024).

Exhibit 10.8 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] restricted stock units (th

Third Amended and Restated Receivables Purchase Agreement, dated as of March 1, 2024, by and among Owens Corning Sales, LLC, Owens Corning Receivables LLC, PNC Bank, National Association and other parties thereto (filed herewith).

Exhibit 10.2 THIRD AMENDED AND RESTATED RECEIVABLES PURCHASE AGREEMENT DATED AS OF MARCH 1, 2024 BY AND AMONG OWENS CORNING RECEIVABLES LLC, as Seller, OWENS CORNING SALES, LLC, as initial Servicer, THE VARIOUS CONDUIT PURCHASERS, RELATED COMMITTED PURCHASERS, LC BANKS AND PURCHASER AGENTS FROM TIME TO TIME PARTY HERETO, PNC BANK, NATIONAL ASSOCIATION, as Administrator, AND PNC CAPITAL MARKETS LLC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 24, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

Retention and Transaction Bonus Opportunity Agreement, dated as of March 1, 2024, by and between Owens Corning and Marcio Sandri (filed herewith).

Exhibit 10.6 OWENS CORNING WORLD HEADQUARTERS ONE OWENS CORNING PARKWAY TOLEDO, OHIO 43659 419.248.8000 Brian Chambers Board Chair and Chief Executive Officer March 1, 2024 Re: Retention and Transaction Bonus Opportunity Dear Marcio, This letter agreement is provided to confirm your opportunity to earn valuable compensation related to Owens Corning’s (the “Company”) potential sale of its Glass Rei

Form of Owens Corning Long-Term Incentive Program Award Agreement pursuant to the Owens Corning 2023 Stock Plan for Performance Share Unit Awards for grants beginning in 2024 (incorporated by reference to Exhibit 10.7 to Owens Corning’s Quarterly Report on Form 10-Q (File No. 1-33100), for the quarter ended March 31, 2024).

Exhibit 10.7 PERFORMANCE SHARE UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN PERFORMANCE SHARE UNIT AWARD Owens Corning, a Delaware corporation (the “Company”), has granted to [Participant Name] (the “Holder”), as of [Grant Date], (the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] share-settled Performan

Owens Corning Delivers Net Sales of $2.3 Billion; Generates Net Earnings of $299 Million and Adjusted EBIT of $438 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.3 Billion; Generates Net Earnings of $299 Million and Adjusted EBIT of $438 Million TOLEDO, Ohio – April 24, 2024 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported first-quarter 2024 results. •Reported Net Sales of $2.3 Billion, in-line with Prior Year •Generated Net Earnings Margins of 13%, Adjusted

Term Loan Agreement, dated as of March 1, 2024, by and among Owens Corning, the lenders referred to therein and Morgan Stanley Senior Funding, Inc., as administrative agent (filed herewith).

Exhibit 10.5 $3,000,000,000 364-DAY TERM LOAN AGREEMENT dated as of March 1, 2024, by and among OWENS CORNING, as Borrower, the Lenders referred to herein, and MORGAN STANLEY SENIOR FUNDING, INC., as Administrative Agent MORGAN STANLEY SENIOR FUNDING, INC., as Sole Lead Arranger and Sole Bookrunner TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 1 SECTION 1.1 Definitions 1 SECTION 1.2 Other Definitio

Second Amended and Restated Credit Agreement, dated as of March 1, 2024, by and among Owens Corning, as borrower, the lenders signatory thereto and Wells Fargo Bank, National Association, as administrative agent (filed herewith).

Exhibit 10.1 Published CUSIP Number: 69074MAZ0 Revolving Credit CUSIP Number: 69074MBA4 $1,000,000,000 Revolving Credit Facility SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of March 1, 2024, by and among OWENS CORNING, as Borrower, the Lenders referred to herein, and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent, a Swingline Lender and an Issuing Lender and BANK OF AMER

Amended and Restated Purchase and Sale Agreement, dated as of March 1, 2024, by and between Owens Corning Sales, LLC, Owens Corning Receivables LLC

Exhibit 10.3 AMENDED AND RESTATED PURCHASE AND SALE AGREEMENT Dated as of March 1, 2024 between OWENS CORNING SALES, LLC, as an Originator, THE OTHER ORIGINATORS FROM TIME TO TIME PARTY HERETO and OWENS CORNING RECEIVABLES LLC, as the Company TABLE OF CONTENTS Page ARTICLE I AGREEMENT TO CONTRIBUTE, PURCHASE AND SELL 2 SECTION 1.1 Agreement To Purchase and Sell. 2 SECTION 1.2 Timing of Purchases.

Table 8 Owens Corning and Subsidiaries Free Cash Flow Reconciliation Schedule

April 15, 2024 CORRESPONDENCE FILING VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, D.C. 20549 Attention: SiSi Cheng   Anne McConnell Re: Owens Corning Form 10-K for the year ended December 31, 2023 Form 8-K filed on February 14, 2024 File No. 001-33100 Ladies and Gentlemen: Owens Corning, a Delaware corporat

- 1 -

- 1 - Exhibit 99.1 UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION Acquisition of Masonite International Corporation On February 8, 2024, Owens Corning entered into an arrangement agreement (as it may be amended from time to time, the (“Arrangement Agreement”), among Owens Corning, MT Acquisition Co ULC, an indirect wholly owned subsidiary of Owens Corning (“Purchaser”), and Masonite Internatio

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. __)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party Other Than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 1, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 1, 2024 Owens Corning (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 1, 2024 Owens Corning (Exact name of registrant as specified in its charter) Delaware 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number)

Subsidiaries of Owens Corning (filed herewith).

Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2023) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada AS Paroc Estonia Deutsche FOAMGLAS GmbH Germany Dutch OC Coöperatief Invest U.A. The Netherlands European Owens Corning Fiberglas SRL Belgium Fiberteq, LLC Delaware Finefiber (Shanghai) Building Material Co. Ltd. China Finefiber Insulation Co. Pte. Ltd. Sing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 Owens Corning (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

Owens Corning Delivers Full-Year Net Sales of $9.7 Billion; Generates Earnings of $1.2 Billion and Adjusted EBIT of $1.8 Billion

Exhibit 99.1 Owens Corning Delivers Full-Year Net Sales of $9.7 Billion; Generates Earnings of $1.2 Billion and Adjusted EBIT of $1.8 Billion TOLEDO, Ohio – February 14, 2024 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported fourth-quarter and full-year 2023 results. •Reported Net Sales of $9.7 Billion, Down Slightly from Prior Year •Expanded 2023 Adju

Owens Corning Clawback Policy (filed herewith).

Exhibit 97.1 Owens Corning Clawback Policy This policy is maintained by the Legal Department and was last updated June 2023. Policy This Clawback Policy (the “Policy”) has been adopted by the Board of Directors (the “Board”) of Owens Corning (the “Corporation”) and provides for the recovery of certain executive compensation in the event of an Accounting Restatement (as defined below). This Policy

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

OC / Owens Corning / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01640-owenscorning.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the ru

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☐ Filed by a Party Other Than the Registrant ☒ Check the Appropriate Box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

and MT Acquisition Co ULC (incorporated by reference to Exhibit 2.1 to

Exhibit 2.1 OWENS CORNING as the Parent and MT ACQUISITION CO ULC as the Purchaser and MASONITE INTERNATIONAL CORPORATION as the Company ARRANGEMENT AGREEMENT February 8, 2024 TABLE OF CONTENTS Article 1 INTERPRETATION Section 1.1 Defined Terms 2 Section 1.2 Other Definitional and Interpretive Provisions 15 Section 1.3 Schedules 16 Article 2 THE ARRANGEMENT Section 2.1 Arrangement 17 Section 2.2 I

Owens Corning Announces $3.9 Billion Acquisition of Masonite to Strengthen Position in Building and Construction Materials

Exhibit 99.1 Owens Corning Announces $3.9 Billion Acquisition of Masonite to Strengthen Position in Building and Construction Materials · Expands Owens Corning’s leadership position in branded residential products with a leading manufacturer of innovative interior and exterior doors and door systems · Creates a scalable new growth platform within a $27 billion addressable market leveraging combine

Arrangement Agreement, dated as of February 8, 2024, among Owens Corning, Masonite International Corporation and MT Acquisition Co ULC*

Exhibit 2.1 OWENS CORNING as the Parent and MT ACQUISITION CO ULC as the Purchaser and MASONITE INTERNATIONAL CORPORATION as the Company ARRANGEMENT AGREEMENT February 8, 2024 TABLE OF CONTENTS Article 1 INTERPRETATION Section 1.1 Defined Terms 2 Section 1.2 Other Definitional and Interpretive Provisions 15 Section 1.3 Schedules 16 Article 2 THE ARRANGEMENT Section 2.1 Arrangement 17 Section 2.2 I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2024 Owens Corning (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

OWENS CORNING MAKES TRANSFORMATIVE MOVES TO STRENGTHEN POSITION IN BUILDING AND CONSTRUCTION MATERIALS February 9, 2024 Brian Chambers | Chair & Chief Executive Officer Todd Fister | Chief Financial Officer

Exhibit 99.2 OWENS CORNING MAKES TRANSFORMATIVE MOVES TO STRENGTHEN POSITION IN BUILDING AND CONSTRUCTION MATERIALS February 9, 2024 Brian Chambers | Chair & Chief Executive Officer Todd Fister | Chief Financial Officer FORWARD - LOOKING STATEMENTS 2 This communication contains forward - looking statements within the meaning of Section 27A of the Securities Act of 1933 and Secti on 21E of the Secu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2024 Owens Corning (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2024 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Investor Presentation, dated February 9, 2024

Exhibit 99.2 OWENS CORNING MAKES TRANSFORMATIVE MOVES TO STRENGTHEN POSITION IN BUILDING AND CONSTRUCTION MATERIALS February 9, 2024 Brian Chambers | Chair & Chief Executive Officer Todd Fister | Chief Financial Officer FORWARD - LOOKING STATEMENTS 2 This communication contains forward - looking statements within the meaning of Section 27A of the Securities Act of 1933 and Secti on 21E of the Secu

Joint Press Release, dated as of February 9, 2024

Exhibit 99.1 Owens Corning Announces $3.9 Billion Acquisition of Masonite to Strengthen Position in Building and Construction Materials · Expands Owens Corning’s leadership position in branded residential products with a leading manufacturer of innovative interior and exterior doors and door systems · Creates a scalable new growth platform within a $27 billion addressable market leveraging combine

As filed with the Securities and Exchange Commission on October 25, 2023

As filed with the Securities and Exchange Commission on October 25, 2023 Registration No.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2023 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Trustee on Form T-1.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) [] COMPUTERSHARE TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of trustee as specified in its charter)

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3ASR (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

Retirement Transition Agreement, dated as of August 4, 2023, by and between Owens Corning and Dan Smith (filed herewith).

Exhibit 10.1 RETIREMENT TRANSITION AGREEMENT This Retirement Transition Agreement (the “Agreement”) is made as of August 4, 2023 by and between OWENS CORNING, a Delaware corporation and its related entities (the “Company”), and Dan Smith, an employee of the Company (“Executive”). Executive has 21 days to consider and execute this Agreement and 7 days to revoke this Agreement after Executive has ex

Owens Corning Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY Each of the officers and directors of Owens Corning, a Delaware corporation (the “Registrant”), whose signature appears below constitutes and appoints Brian Chambers, Todd Fister, Gina Beredo and Matthew Fortunak, and each of them, his/her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, to sign, execute and file with

Owens Corning Delivers Net Sales of $2.5 Billion; Generates Net Earnings of $337 Million and Adjusted EBIT of $518 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.5 Billion; Generates Net Earnings of $337 Million and Adjusted EBIT of $518 Million TOLEDO, Ohio – October 25, 2023 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported third-quarter 2023 results. •Reported Net Sales of $2.5 Billion, Similar to Prior Year •Grew Adjusted EBIT Margins to 21% and Adjusted E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

Form of Owens Corning Restricted Stock Unit Award Agreement (filed herewith).

Exhibit 10.2 RESTRICTED STOCK UNIT AWARD AGREEMENT pursuant to the OWENS CORNING 2023 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation (the “Company”), hereby grants to [Participant Name] (the “Holder”), as of [Grant Date] ( the “Grant Date”), pursuant to the provisions of the Owens Corning 2023 Stock Plan (the “Plan”), [Number of Shares Granted] restricted stock units

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 21, 2023 Owens Corning (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 21, 2023 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-

Owens Corning Delivers Net Sales of $2.6 Billion; Generates Net Earnings of $345 Million and Adjusted EBIT of $534 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.6 Billion; Generates Net Earnings of $345 Million and Adjusted EBIT of $534 Million TOLEDO, Ohio – July 26, 2023 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported second-quarter 2023 results. •Reported Net Sales of $2.6 Billion, Similar to Prior Year •Expanded Adjusted EBIT Margins to 21% and Adjusted

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 Owens Corning (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 26, 2023 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

Second Amendment to Amended and Restated Credit Agreement, dated as of May 24, 2023, by and among Owens Corning and Wells Fargo Bank, National Association (filed herewith).

oc-2023x06x30x10qxexh101 Execution Version This SECOND AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”) is dated as of May 24, 2023 and is by and among (i) OWENS CORNING, a Delaware corporation (the “Borrower”); (ii) the Lenders party to the Credit Agreement which are signatories hereto; and (iii) WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent (in such capacity, the “Administrative Agent”).

Fourth Amended and Restated Bylaws of Owens Corning, effective as of June 15, 2023 (incorporated by reference to Exhibit 3.1 of Owens Corning’s Current Report on Form 8-K, filed June 22, 2023).

EX-3.1 Exhibit 3.1 FOURTH AMENDED AND RESTATED BYLAWS OF OWENS CORNING JUNE 15, 2023 FOURTH AMENDED AND RESTATED BYLAWS OF OWENS CORNING ARTICLE I STOCKHOLDERS Section 1.1 Annual Meeting. An annual meeting of the stockholders of Owens Corning (the “Corporation”), for the election of directors to succeed those whose terms expire and for the transaction of such other business as may be properly brou

Fourth Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to Owens Corning's Current Report on Form 8-K (File No. 1-33100, filed June 22, 2023).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of (Commission (IRS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of (Commission (IRS Employer incorporation or organization) File Number) Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive of

2023 Stock Plan (filed herewith)

Exhibit 10.1 OWENS CORNING 2023 STOCK PLAN I. INTRODUCTION 1.1 Purpose. The purpose of this Plan is to promote the long-term financial success of the Company by permitting the grant of awards capable of (a) establishing an equity compensation program for Non-Employee Directors and certain employees of the Company and its Subsidiaries; (b) attracting and retaining executive personnel of outstanding

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 26, 2023 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

hird Amended and Restated Bylaws (as amended on April 20, 2023) (fil

Exhibit 3.1 THIRD AMENDED AND RESTATED BYLAWS OF OWENS CORNING (AS AMENDED) APRIL 20, 2023 THIRD AMENDED AND RESTATED BYLAWS OF OWENS CORNING (as amended on April 20, 2023) ARTICLE 1 STOCKHOLDERS Section 1.1 Annual Meeting. An annual meeting of the stockholders of Owens Corning (the “Corporation”), for the election of directors to succeed those whose terms expire and for the transaction of such ot

Owens Corning Delivers Net Sales of $2.3 Billion; Generates Net Earnings of $383 Million and Adjusted EBIT of $361 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.3 Billion; Generates Net Earnings of $383 Million and Adjusted EBIT of $361 Million TOLEDO, Ohio – April 26, 2023 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported first-quarter 2023 results. •Reported Net Sales of $2.3 Billion, in-line with Prior Year •Generated Adjusted EBIT Margins of 15% and Adjus

As filed with the Securities and Exchange Commission on April 26, 2023

As filed with the Securities and Exchange Commission on April 26, 2023 Registration No.

Power of Attorney

EX-24.1 Exhibit 24.1 POWER OF ATTORNEY AND SIGNATURES KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned directors and officers of Owens Corning, a Delaware corporation (the “Registrant”), does hereby constitute and appoint each of Brian D. Chambers, Gina A. Beredo and Kenneth S. Parks, or any of them, each acting alone, as the true and lawful attorney-in-fact or attorneys-in-fact fo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Owens Corning (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, par value $0.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party Other Than the Registrant ☐ Check the Appropriate Box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party Other Than the Registrant ☐ Check the Appropriate Box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ☐ Defi

Subsidiaries of Owens Corning (filed herewith).

Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2022) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada AS Paroc Estonia Deutsche FOAMGLAS GmbH Germany Dutch OC Coöperatief Invest U.A. The Netherlands European Owens Corning Fiberglas SRL Belgium Fiberteq, LLC Delaware Finefiber (Shanghai) Building Material Co. Ltd. China Finefiber Insulation Co. Pte. Ltd. Sing

Owens Corning Delivers Record Full-Year 2022 Results

Exhibit 99.1 Owens Corning Delivers Record Full-Year 2022 Results TOLEDO, Ohio – February 15, 2023 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported fourth-quarter and full-year 2022 results. •Reported Net Sales Increase of 15% in 2022 to $9.8 Billion •Produced Full-Year Net Earnings of $1.2 Billion •Expanded 2022 Adjusted EBIT Margins to 18% and Adjus

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 Owens Corning (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

OC / Owens Corning / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 1, 2022 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2022 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Owens Corning Delivers Net Sales of $2.5 Billion; Generates Net Earnings of $470 Million and Adjusted EBIT of $487 Million

Exhibit 99.1 Owens Corning Delivers Net Sales of $2.5 Billion; Generates Net Earnings of $470 Million and Adjusted EBIT of $487 Million TOLEDO, Ohio ? October 26, 2022 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported third-quarter 2022 results. ?Reported Net Sales Increase of 14% to $2.5 Billion ?Expanded Adjusted EBIT Margins to 19% and Adjusted EBIT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-

First Amendment to Amended and Restated Credit Agreement, dated as of June 13, 2022, by and among Owens Corning and Wells Fargo Bank, National Association (filed herewith).

Execution Version This FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (this ?Amendment?) is dated as of June 13, 2022 and is by and among (i) OWENS CORNING, a Delaware corporation (the ?Borrower?); (ii) the Lenders party to the Credit Agreement which are signatories hereto; and (iii) WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent (in such capacity, the ?Administrative Agent?).

Owens Corning Delivers Record Net Sales of $2.6 Billion; Generates Net Earnings of $343 Million and Adjusted EBIT of $525 Million

Exhibit 99.1 Owens Corning Delivers Record Net Sales of $2.6 Billion; Generates Net Earnings of $343 Million and Adjusted EBIT of $525 Million TOLEDO, Ohio ? July 27, 2022 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported second-quarter 2022 results. ?Reported Net Sales Increase of 16% to $2.6 Billion ?Expanded Adjusted EBIT Margins to 20% and Adjusted

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2022 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

OC / Owens Corning / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: April 29, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rule 13

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1

Owens Corning Delivers Record Net Sales of $2.3 Billion, Generates Net Earnings of $304 Million and Adjusted EBIT of $417 Million

Exhibit 99.1 Owens Corning Delivers Record Net Sales of $2.3 Billion, Generates Net Earnings of $304 Million and Adjusted EBIT of $417 Million TOLEDO, Ohio ? April 27, 2022 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported first-quarter 2022 results. ?Reported Net Sales Increase of 23% to $2.3 Billion ?Expanded Adjusted EBITDA Margins to 23% and Adjust

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2022 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

Form of Owens Corning 2022 Long Term Incentive Program Award Agreement pursuant to the Owens Corning 2019 Stock Plan for Restricted Stock Unit Award (incorporated by reference to Exhibit 10.1 to Owens Corning's Quarterly Report on Form 10-Q (File No. 1-33100), for the quarter ended March 31, 2022).*

Exhibit 10.1 2022 LONG TERM INCENTIVE PROGRAM AWARD AGREEMENT pursuant to the OWENS CORNING 2019 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation, has granted to [Participant Name] (the ?Holder?), as of [Grant Date] (the ?Grant Date?), pursuant to the provisions of the Owens Corning 2019 Stock Plan (the ?Plan?), [Number of Shares Granted] Restricted Stock Units (the ?Un

Form of Owens Corning 2022 Long Term Incentive Program Award Agreement pursuant to the Owens Corning 2019 Stock Plan for Performance Share Unit Award (incorporated by reference to Exhibit 10.2 to Owens Corning's Quarterly Report on Form 10-Q (File No. 1-33100), for the quarter ended March 31, 2022).*

Exhibit 10.2 2022 LONG TERM INCENTIVE PROGRAM AWARD AGREEMENT pursuant to the OWENS CORNING 2019 STOCK PLAN PERFORMANCE SHARE UNIT AWARD Owens Corning, a Delaware corporation, has granted to [Participant Name] (the ?Holder?), as of [Grant Date], (the ?Grant Date?), pursuant to the provisions of the Owens Corning 2019 Stock Plan (the ?Plan?), [Number of Shares Granted] share-settled Performance Sha

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of Incorporation or

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of Incorporation or organization) (Commission File Number) (IRS Employer Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive of

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 14, 2022 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEF 14A 1 d241910ddef14a.htm DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party Other Than the Registrant ☐ Check the Appropriate Box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 16, 2022 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

Subsidiaries of Owens Corning (filed herewith).

EX-21.1 2 oc-20211231x10kxex211.htm EX-21.1 Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2021) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada AS Paroc Estonia Crown Mfg. Inc. Canada Deutsche FOAMGLAS GmbH Germany Dutch OC Coöperatief Invest U.A. The Netherlands European Owens Corning Fiberglas SRL Belgium Finefiber (Shanghai) Building Material Co. Ltd. C

Owens Corning Finishes Year Strong Delivering Record Full-Year 2021 Results

Exhibit 99.1 Owens Corning Finishes Year Strong Delivering Record Full-Year 2021 Results TOLEDO, Ohio ? February 16, 2022 - Owens Corning (NYSE: OC), a global building and construction materials leader, today reported fourth-quarter and full-year 2021 results. ?Reported Net Sales Increase of 20% in 2021 to $8.5 Billion ?Produced Full-Year Net Earnings of $1.0 Billion Resulting in Diluted EPS of $9

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

OC / Owens Corning / Boston Partners - ROBECO INVESTMENT MANAGEMENT INC. Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* OWENS CORNING (Name of Issuer) Common Stock (Title of Class of Securities) 690742101 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

OC / Owens Corning / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0087-owenscorning.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule

OC / Owens Corning / BlackRock Inc. Passive Investment

SC 13G/A 1 us6907421019012622.txt us6907421019012622.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 7) OWENS CORNING - (Name of Issuer) Common Stock - (Title of Class of Securities) 690742101 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to d

Owens Corning Announces 35% Dividend Increase

Exhibit 99.1 NEWS RELEASE Owens Corning Announces 35% Dividend Increase TOLEDO, Ohio ?? December 2, 2021 ?? Owens Corning (NYSE: OC) today announced that its Board of Directors has declared a quarterly cash dividend of $0.35 per common share, a 35% increase compared with the prior quarterly dividend. The dividend will be payable on January 21, 2022, to shareholders of record as of January 7, 2022.

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 2, 2021 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Amended and Restated Credit Agreement, dated as of July 23, 2021, by and among Owens Corning, as borrower, the lenders signatory thereto and Wells Fargo Bank, National Association, as administrative agent (incorporated by reference to Exhibit 10.1 to Owens Corning's Quarterly Report on Form 10-Q (File No. 1-33100) for the quarter ended September 30, 2021).

Exhibit 10.1 Execution Version Published CUSIP Number: 69074MAX5 Revolving Credit CUSIP Number: 69074MAY3 $800,000,000 Revolving Credit Facility AMENDED AND RESTATED CREDIT AGREEMENT dated as of July 23, 2021, by and among OWENS CORNING, as Borrower, the Lenders referred to herein, and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Administrative Agent, a Swingline Lender and an Issuing Lender and BAN

Owens Corning Reports Third-Quarter 2021 Results Company Delivered Net Sales of $2.2 Billion; Net Earnings of $260 Million and Adjusted EBIT of $400 Million

Exhibit 99.1 Owens Corning Reports Third-Quarter 2021 Results Company Delivered Net Sales of $2.2 Billion; Net Earnings of $260 Million and Adjusted EBIT of $400 Million ?Delivered adjusted EBIT margins of 18%, with all three businesses posting double digit EBIT margins for a fifth consecutive quarter ?Roofing produced $212 million of EBIT with 24% EBIT margins ?Insulation delivered $124 million o

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 27, 2021 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2021 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number

Third Amended and Restated Bylaws of Owens Corning (as adopted on July 28, 2021) (filed herewith).

Exhibit 3.1 SECOND THIRD AMENDED AND RESTATED BYLAWS OF OWENS CORNING JULY 28, 2021 JUNE 19, 2019 SECOND THIRD AMENDED AND RESTATED BYLAWS OF OWENS CORNING (as adopted on June 19, 2019July 28, 2021) ARTICLE I STOCKHOLDERS Section 1.1 Annual Meeting. An annual meeting of the stockholders of Owens Corning (the ?Corporation?), for the election of directors to succeed those whose terms expire and for

Third Amendment to Second Amended and Restated Receivables Purchase Agreement, dated as of April 26, 2021, by and among Owens Corning Sales, LLC, Owens Corning Receivables LLC, PNC Bank, National Association and other parties thereto (incorporated by reference to Exhibit 10.1 to Owens Corning's Quarterly Report on Form 10-Q (File No. 1-33100) for the quarter ended June 30, 2021).

Exhibit 10.1 EXECUTION VERSION THIRD AMENDMENT TO SECOND AMENDED AND RESTATED RECEIVABLES PURCHASE AGREEMENT THIS THIRD AMENDMENT TO SECOND AMENDED AND RESTATED RECEIVABLES PURCHASE AGREEMENT, dated as of April 26, 2021 (this ?Amendment?), is entered into by and among the following parties: (i) OWENS CORNING RECEIVABLES LLC, a Delaware limited liability company, as seller (the ?Seller?); (ii) OWEN

Owens Corning Reports Second-Quarter 2021 Results Company Delivered Record Net Sales of $2.2 Billion; Net Earnings of $298 Million and Record Adjusted EBIT of $408 Million

Exhibit 99.1 Owens Corning Reports Second-Quarter 2021 Results Company Delivered Record Net Sales of $2.2 Billion; Net Earnings of $298 Million and Record Adjusted EBIT of $408 Million ?Delivered adjusted EBIT margins of 18%, with all three businesses continuing to post double-digit EBIT margins for a fourth consecutive quarter ?Roofing produced $234 million of EBIT with 26% EBIT margins ?Insulati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 28, 2021 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

Second Amendment to Purchase and Sale Agreement, dated as of April 26, 2021, by and between Owens Corning Sales, LLC and Owens Corning Receivables, LLC (incorporated by reference to Exhibit 10.2 to Owens Corning's Quarterly Report on Form 10-Q (File No. 1-33100), for the quarter ended June 30, 2021).

Exhibit 10.2 EXECUTION VERSION SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT THIS SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT, dated as of April 26, 2021 (this ?Amendment?), is entered into by and among the following parties: (i) OWENS CORNING SALES, LLC, a Delaware limited liability company (the ?Originator?); and (ii) OWENS CORNING RECEIVABLES LLC, a Delaware limited liability company (the

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of Incorporation or

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of Incorporation or organization) (Commission File Number) (IRS Employer Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive of

Owens Corning Reports First-Quarter 2021 Results Company Delivered Net Sales of $1.9 Billion; Generated Net Earnings of $210 Million and Adjusted EBIT of $282 Million

Exhibit 99.1 Owens Corning Reports First-Quarter 2021 Results Company Delivered Net Sales of $1.9 Billion; Generated Net Earnings of $210 Million and Adjusted EBIT of $282 Million ? Delivered record first quarter net sales, net earnings and adjusted EBIT ? Roofing produced $156 million of EBIT with 22% EBIT margins ? Insulation delivered $82 million of EBIT with 12% EBIT margins ? Composites repor

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2021 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2021 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party Other Than the Registrant ? Check the Appropriate Box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) ? Defi

Subsidiaries of Owens Corning (filed herewith).

Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2020) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada AS Paroc Estonia Crown Mfg. Inc. Canada Deutsche FOAMGLAS GmbH Germany Dutch OC Co?peratief Invest U.A. The Netherlands European Owens Corning Fiberglas SRL Belgium Finefiber (Shanghai) Building Material Co. Ltd. China Finefiber Insulation Co. Pte. Ltd. Sing

Form of Owens Corning 2020 Long Term Incentive Program Award Agreement pursuant to the Owens Corning 2019 Stock Plan for Restricted Stock Unit Award (incorporated by reference to Exhibit 10.32 to Owens Corning's Annual Report on Form 10-K (File No. 1-33100), for the year ended December 31, 2020).*

EX-10.32 5 oc20201231-10kxex1032.htm EX-10.32 Exhibit 10.32 2020 LONG TERM INCENTIVE PROGRAM AWARD AGREEMENT pursuant to the OWENS CORNING 2019 STOCK PLAN RESTRICTED STOCK UNIT AWARD OWENS CORNING, a Delaware corporation, has granted to [Participant Name] (the “Holder”), as of [Grant Date] (the “Grant Date”), pursuant to the provisions of the Owens Corning 2019 Stock Plan (the “Plan”), [Number of

2020 Long Term Incentive Program Award Agreement pursuant to the Owens Corning 2019 Stock Plan for Performance Share Unit Award (incorporated by reference to Exhibit 10.30 to Owens Corning

EX-10.30 4 oc-20201231x10kxex1030.htm EX-10.30 Exhibit 10.30 2020 LONG TERM INCENTIVE PROGRAM AWARD AGREEMENT pursuant to the OWENS CORNING 2019 STOCK PLAN PERFORMANCE SHARE UNIT AWARD Owens Corning, a Delaware corporation, has granted to [Participant Name] (the “Holder”), as of [Grant Date], (the “Grant Date”), pursuant to the provisions of the Owens Corning 2019 Stock Plan (the “Plan”), [Number

Owens Corning 2021 Corporate Incentive Plan (incorporated by reference to Exhibit 10.16 to Owens Corning's Annual Report on Form 10-K (File No. 1-33100) for the year ended December 31, 2020).*

EX-10.16 2 oc-20201231x10kxex1016.htm EX-10.16 Exhibit 10.16 OWENS CORNING 2021 Corporate Incentive Plan 1. Introduction This Owens Corning 2021 Corporate Incentive Plan (the “Plan” or “Corporate Incentive Plan”) has been established for the purposes of advancing the interests of Owens Corning (the “Company”) and its stockholders by providing incentive opportunities to Executive Officers of the Co

Owens Corning Reports Full-Year and Fourth-Quarter 2020 Results Company Delivered Net Sales of $7.1 Billion; Generated Record Operating Cash Flow of $1.1 Billion in 2020

Exhibit 99.1 Owens Corning Reports Full-Year and Fourth-Quarter 2020 Results Company Delivered Net Sales of $7.1 Billion; Generated Record Operating Cash Flow of $1.1 Billion in 2020 •Financial results demonstrated the company’s strength and resiliency in a challenging environment •Roofing produced $591 million of EBIT with 22% EBIT margins •Insulation delivered $250 million of EBIT with 10% EBIT

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

Owens Corning Amended and Restated Deferred Compensation Plan, effective as of January 1, 2021 (filed herewith).*

EX-10.17 3 oc-20201231xex1017.htm EX-10.17 Exhibit 10.17 OWENS CORNING DEFERRED COMPENSATION PLAN (As amended and restated, effective January 1, 2021) SECTION 1 General 1.1Purpose. The Owens Corning Deferred Compensation Plan (the “Plan”) has been established by Owens Corning (the “Company”) to provide non-employee directors and certain management employees with an opportunity to save in a tax eff

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 17, 2021 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* OWENS CORNING (Name of Issuer) Common Stock (Title of Class of Securities) 690742101 (CUSIP Number) Dece

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* OWENS CORNING (Name of Issuer) Common Stock (Title of Class of Securities) 690742101 (CUSIP Number) December 31, 2020 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2021 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2021 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Owens Corning Announces Dividend Increase, Authorization for Repurchase of Up to 10 Million Additional Shares

EX-99.1 Exhibit 99.1 Owens Corning Announces Dividend Increase, Authorization for Repurchase of Up to 10 Million Additional Shares TOLEDO, Ohio –– December 3, 2020 –– Owens Corning (NYSE: OC) today announced that its Board of Directors has approved a quarterly dividend increase and an expanded share repurchase authorization. The actions reaffirm the company’s capital allocation strategy and reflec

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 3, 2020 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of the Trustee on Form T-1.

EX-25.1 5 d50963dex251.htm EX-25.1 Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b) (2) WELLS FARGO BANK, NATIONAL ASSOCIATION (Exact name of trustee as specified in its

Owens Corning Reports Third-Quarter 2020 Results Company Delivered Net Sales of $1.9 Billion; Posted Strong Net Earnings of $206 Million and Record Quarterly Adjusted EBIT of $289 Million

Exhibit 99.1 Owens Corning Reports Third-Quarter 2020 Results Company Delivered Net Sales of $1.9 Billion; Posted Strong Net Earnings of $206 Million and Record Quarterly Adjusted EBIT of $289 Million •Company achieved strong financial results in improving markets •Roofing generated $196 million of EBIT with 26% EBIT margins •Insulation delivered $73 million of EBIT with 11% EBIT margins •Composit

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

Owens Corning Power of Attorney.

EX-24.1 Exhibit 24.1 POWER OF ATTORNEY Each of the officers and directors of Owens Corning, a Delaware corporation (the “Registrant”), whose signature appears below constitutes and appoints Brian D. Chambers, Kenneth S. Parks, Ava Harter and Matthew Fortunak, and each of them, his/her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, to sign, execute

- FORM S-3ASR

S-3ASR 1 d50963ds3asr.htm FORM S-3ASR Table of Contents As filed with the Securities and Exchange Commission on October 28, 2020 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 OWENS CORNING (Exact name of registrant as specified in its charter) Delaware 43-2109021 (State or other jurisdi

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2020 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

-

OWENS CORNING ONE OWENS CORNING PARKWAY TOLEDO, OHIO 43659 419.248.5614 EMAIL: [email protected] KELLY J. SCHMIDT VICE PRESIDENT AND CONTROLLER September 21, 2020 CORRESPONDENCE VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.C. 20549 Attention: SiSi Cheng Anne Mcconnell Re: Owens Corning Form 10-

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 16, 2020 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Num

Owens Corning Elects Alfred Festa to Board of Directors

EX-99.1 Exhibit 99.1 Owens Corning Elects Alfred Festa to Board of Directors TOLEDO, Ohio – September 17, 2020 – Owens Corning (NYSE: OC) announced today that Alfred (Fred) E. Festa, former Chairman of W.R. Grace & Co., has been elected to the company’s Board of Directors. “We are pleased to welcome Fred to our Board of Directors,” said Brian Chambers, Chairman and Chief Executive Officer. “With h

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2020 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 29, 2020 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-

Owens Corning Reports Second-Quarter 2020 Results Company Delivered Net Sales of $1.6 Billion

Exhibit 99.1 Owens Corning Reports Second-Quarter 2020 Results Company Delivered Net Sales of $1.6 Billion •Company delivered solid quarterly results in a challenging environment •Roofing produced $148 million of EBIT on strong shingle demand •Insulation delivered $32 million of EBIT on recovering new residential construction •Composites generated $6 million of EBIT on disciplined cost control •Co

- FORM SD

SD 1 d925468dsd.htm FORM SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of (Commission (IRS Employer Incorporation or organization) File Number) Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Addre

Twelfth Supplemental Indenture, dated as of May 12, 2020, by and between Owens Corning and Computershare Trust Company, N.A., as successor to Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 to Owens Corning’s Current Report on Form 8-K, filed May 12, 2020).

EX-4.1 Exhibit 4.1 TWELFTH SUPPLEMENTAL INDENTURE Dated as of May 12, 2020 Between OWENS CORNING, As Issuer and WELLS FARGO BANK, NATIONAL ASSOCIATION, As Trustee 3.875% Senior Notes Due 2030 THIS TWELFTH SUPPLEMENTAL INDENTURE (the “Twelfth Supplemental Indenture”), dated as of May 12, 2020, between OWENS CORNING, a Delaware corporation (“Company”), and WELLS FARGO BANK, NATIONAL ASSOCIATION, a n

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12 (May 7, 2020) Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File N

Underwriting Agreement, dated as of May 7, 2020, by and among the Company and BofA Securities, Inc., Citigroup Global Markets Inc., Goldman Sachs & Co. LLC and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein.

Exhibit 1.1 OWENS CORNING (a Delaware corporation) $300,000,000 3.875% Senior Notes due 2030 UNDERWRITING AGREEMENT Dated: May 7, 2020 TABLE OF CONTENTS Page SECTION 1. Representations and Warranties 4 (a) Representations and Warranties by the Company 4 (b) Representations and Warranties by the Underwriters 17 SECTION 2. Sale and Delivery to Underwriters; Closing 17 (a) Securities 17 (b) Public Of

CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered Proposed Maximum Offering Price per Unit Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) 3.875% Senior Notes due 2030 $

Table of Contents CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered Proposed Maximum Offering Price per Unit Proposed Maximum Aggregate Offering Price Amount of Registration Fee(1) 3.

Subject to Completion Preliminary Prospectus Supplement dated May 7, 2020

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-222514 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not p

Pricing Term Sheet Owens Corning 3.875% Senior Notes due 2030

FWP 1 d899523dfwp.htm FWP Filed Pursuant to Rule 433 Dated as of May 7, 2020 Registration Statement No. 333-222514 Term Sheet to Preliminary Prospectus Supplement dated May 7, 2020 Pricing Term Sheet Owens Corning $300,000,000 3.875% Senior Notes due 2030 This pricing term sheet to the preliminary prospectus supplement dated May 7, 2020 should be read together with the preliminary prospectus suppl

- FORM S-8

S-8 1 d923414ds8.htm FORM S-8 As filed with the Securities and Exchange Commission on April 29, 2020. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Owens Corning (Exact name of registrant as specified in its charter) Delaware 43-2109021 (State or other jurisdiction of incorporation or o

Power of Attorney

EX-24.1 Exhibit 24.1 POWER OF ATTORNEY AND SIGNATURES KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned directors and officers of Owens Corning, a Delaware corporation (the “Registrant”), does hereby constitute and appoint each of Brian D. Chambers, Ava Harter and Omar Chaudhary, or any of them, each acting alone, as the true and lawful attorney-in-fact or attorneys-in-fact for each

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1

Owens Corning Reports First-Quarter 2020 Results Company Delivered Net Sales of $1.6 Billion

Exhibit 99.1 Owens Corning Reports First-Quarter 2020 Results Company Delivered Net Sales of $1.6 Billion •Company delivered strong results in a challenging environment •Roofing produced $64 million of EBIT; maintained 12% EBIT margins •Insulation delivered $39 million of EBIT; doubled EBIT margins to 6% •Composites generated $44 million of EBIT; posted EBIT margins of 9% •Company recorded non-cas

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2020 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 16, 2020 Owens Corning (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 16, 2020 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number)

Amended and Restated Owens Corning Employee Stock Purchase Plan, (incorporated by reference to Exhibit 10.1 to Owens Corning's Current Report on Form 8-K (File No. 1-33100), filed April 21, 2020).*

EX-10.1 Exhibit 10.1 OWENS CORNING EMPLOYEE STOCK PURCHASE PLAN (Amendment and Restatement Effective April 16, 2020) 1. Purpose. The purpose of this Plan is to provide eligible employees of the Company and its Participating Subsidiaries with an opportunity to purchase Common Stock of the Company through accumulated payroll deductions or other permitted contributions. Except as provided in Section

OC / Owens Corning, Inc. DEFA14A - - DEFA14A

DEFA14A 1 d889316ddefa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐

OC / Owens Corning, Inc. DEF 14A - - DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

OC / Owens Corning, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: February 28, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

Subsidiaries of Owens Corning (filed herewith).

Exhibit 21.1 Subsidiaries of Owens Corning (12/31/2019) State or Other Jurisdiction Under the Laws of Which Organized 0979301 B.C. ULC Canada AS Paroc Estonia Crown Mfg. Inc. Canada Deutsche Foamglas GmbH Germany Dutch OC Coöperatief Invest U.A. The Netherlands European Owens Corning Fiberglas SPRL Belgium Finefiber (Shanghai) Building Material Co. Ltd. China Finefiber Insulation Co. Pte. Ltd. Sin

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-33100 Owens Corning (Exact name o

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934 (incorporated by reference to Exhibit 4.26 to Owens Corning's Annual Report on Form 10-K (File No. 1-33100) for the year ended December 31, 2019).

EXHIBIT 4.26 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following summary description of the common stock, par value $0.01 per share (“common stock”), of Owens Corning, a Delaware corporation (the “Company”), is based on the provisions of the General Corporation Law of the State of Delaware (the “DGCL”) and the Company’s certificate of incorpor

Owens Corning Reports Full-Year and Fourth-Quarter 2019 Results Company Delivered Net Sales of $7.2 Billion, Generated Record Operating Cash Flow of $1 Billion in 2019

EX-99.1 2 a2019-12x31pressrelease.htm EX-99.1 Exhibit 99.1 Owens Corning Reports Full-Year and Fourth-Quarter 2019 Results Company Delivered Net Sales of $7.2 Billion, Generated Record Operating Cash Flow of $1 Billion in 2019 •Company delivered $405 million of net earnings and adjusted EBIT of $828 million •Roofing improved EBIT by $21 million to $455 million •Insulation delivered $230 million of

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2020 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I

OC / Owens Corning, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0997-owenscorning.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule

OC / Owens Corning, Inc. / Boston Partners - ROBECO INVESTMENT MANAGEMENT INC. Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* OWENS CORNING (Name of Issuer) Common Stock (Title of Class of Securities) 690742101 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

OC / Owens Corning, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)* Name of issuer: Owens Corning Title of Class of Securities: Common Stock CUSIP Number: 690742101 Date of Event Which Requires Filing of this Statement: November 29, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 5, 2019 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C., 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2019 Owens Corning (Exact name of registrant as specified in its charter) DE 1-33100 43-2109021 (State or other jurisdiction of incorporation) (Commission File Number) (I.

Owens Corning Reports Third-Quarter 2019 Results Company Delivered Net Sales of $1.9 Billion, Net Earnings of $150 Million and Adjusted EBIT of $277 Million

Exhibit 99.1 Owens Corning Reports Third-Quarter 2019 Results Company Delivered Net Sales of $1.9 Billion, Net Earnings of $150 Million and Adjusted EBIT of $277 Million •Roofing improved EBIT by $16 million to $143 million on volume strength •Insulation delivered $84 million of EBIT, with continued strong performance in the technical and other building insulation businesses •Composites generated

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 10, 2019 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

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EX-99.1 Exhibit 99.1 NEWS RELEASE Owens Corning Elects Eduardo Cordeiro to Board of Directors TOLEDO, Ohio – September 20, 2019 - Owens Corning (NYSE: OC) announced that Eduardo (Eddie) Cordeiro, former executive vice president, chief financial officer and president of the Americas region for Cabot Corporation, has been elected to the company’s Board of Directors. “We are pleased to welcome Eddie

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 18, 2019 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Num

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2019 Owens Corning (Exact Name of Registrant as Specified in its Charter) Delaware 1-33100 43-2109021 (State or Other Jurisdiction of Incorporation) (Commission File Number

Underwriting Agreement, dated as of July 29, 2019, by and among the Company and BofA Securities, Inc., Citigroup Global Markets Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein.

EX-1.1 2 d788890dex11.htm EX-1.1 Exhibit 1.1 OWENS CORNING (a Delaware corporation) $450,000,000 3.950% Senior Notes due 2029 UNDERWRITING AGREEMENT Dated: July 29, 2019 TABLE OF CONTENTS Page SECTION 1. Representations and Warranties 4 (a)   Representations and Warranties by the Company 4 (b)   Representations and Warranties by the Underwriters 16 SECTION 2. Sale and Delivery to Underwriters; Clo

Eleventh Supplemental Indenture, dated as of August 12, 2019, by and among Owens Corning and BofA Securities, Inc., Citigroup Global Markets Inc., and Wells Fargo Securities, LLC as representatives of the several underwriters named therein (incorporated by reference to Exhibit 4.1 to Owens Corning’s Current Report on Form 8-K (File No. 1-33100), filed August 12, 2019).

EX-4.1 Exhibit 4.1 ELEVENTH SUPPLEMENTAL INDENTURE Dated as of August 12, 2019 Between OWENS CORNING, As Issuer and WELLS FARGO BANK, NATIONAL ASSOCIATION, As Trustee 3.950% Senior Notes Due 2029 THIS ELEVENTH SUPPLEMENTAL INDENTURE (the “Eleventh Supplemental Indenture”), dated as of August 12, 2019, between OWENS CORNING, a Delaware corporation (“Company”), and WELLS FARGO BANK, NATIONAL ASSOCIA

CALCULATION OF REGISTRATION FEE Title of each class of securities to be registered Amount to be registered Proposed maximum offering price per unit Proposed maximum aggregate offering price Amount of registration fee (1) 3.950% Senior Notes due 2029

424B5 1 d780848d424b5.htm FORM 424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-222514 CALCULATION OF REGISTRATION FEE Title of each class of securities to be registered Amount to be registered Proposed maximum offering price per unit Proposed maximum aggregate offering price Amount of registration fee (1) 3.950% Senior Notes due 2029 $450,000,000 99.787% $449,041,500

Pricing Term Sheet Owens Corning 3.950% Senior Notes due 2029

FWP Filed Pursuant to Rule 433 Dated as of July 29, 2019 Registration Statement No.

Subject to Completion Preliminary Prospectus Supplement dated July 29, 2019

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-222514 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not p

Owens Corning Reports Second-Quarter 2019 Results Company Delivered Record Net Sales of $1.9 Billion, Net Earnings Growth of 14% to $138 Million

EX-99.1 2 a2019-06x30pressrelease.htm EXHIBIT 99.1 Exhibit 99.1 Owens Corning Reports Second-Quarter 2019 Results Company Delivered Record Net Sales of $1.9 Billion, Net Earnings Growth of 14% to $138 Million • Roofing improved EBIT by $24 million, to $151 million on above-market volume growth • Insulation delivered $42 million in EBIT, with continued strong performance in the technical and other