OC

EX-99.1

2 q22026exh-991pressrelease.htm

EX-99.1

Document

Exhibit 99.1

Owens Corning Demonstrates Value of Reshaped Company;          Delivers Strong Results from Continuing Operations in the Second Quarter

TOLEDO, Ohio – August 5, 2026 - Owens Corning (NYSE: OC), a branded building products leader, today reported second-quarter 2026 results.

•Reported Net Sales from Continuing Operations of $2.8 Billion, In Line with Prior Year

•Generated Net Earnings Margin from Continuing Operations of 11% and Adjusted EBITDA Margin from Continuing Operations of 24%

•Delivered Diluted EPS from Continuing Operations of $3.84 and Adjusted Diluted EPS from Continuing Operations of $3.93

•Produced Operating Cash Flow of $398 Million and Free Cash Flow of $199 Million

•Returned $264 Million to Shareholders through Dividends and Share Repurchases

“These outstanding second-quarter results demonstrate the strength of our reshaped company. Our performance is a direct result of our strategic pivot to build a large-scale, residential-focused building products company with unique and unifying competitive advantages across market-leading businesses,” said Chair and Chief Executive Officer Brian Chambers. “Through our strategic choices, disciplined execution, and continued investment, we have created multiple paths to deliver revenue, earnings, and cash flow growth. As we look ahead, we remain focused on executing our growth agenda and creating long-term value for our customers and shareholders.”

Enterprise Performance from Continuing Operations

($ in millions, except per share amounts) Second-Quarter Six Months

20262025Change20262025Change

Net Sales$2,756$2,747$9—%$5,021$5,277$(256)(5)%

Net Earnings Attributable to OC310334(24)(7)%348589(241)(41)%

As a Percent of Net Sales11%12%N/AN/A7%11%N/AN/A

Adjusted EBITDA660703(43)(6)%1,0291,268(239)(19)%

As a Percent of Net Sales24%26%N/AN/A20%24%N/AN/A

Diluted EPS3.843.91(0.07)(2)%4.316.86(2.55)(37)%

Adjusted Diluted EPS3.934.21(0.28)(7)%5.157.17(2.02)(28)%

Operating Cash Flow1 3983277122%244278(34)(12)%

Free Cash Flow1 1991297054%(188)(123)(65)(53)%

1 Reflects full company performance inclusive of discontinued operations.

Enterprise Strategy Updates

•In the second quarter, Owens Corning maintained a high level of safety performance with a recordable incident rate (RIR) of 0.75.

•Owens Corning completed the sale of its glass reinforcements business on April 30, 2026, advancing the company’s strategy to operate as a residential-focused building products leader in North America and Europe and enhancing its capital efficiency. The sale positions the company to deliver higher, more resilient margins and cash flows in support of its growth and capital allocation strategy.

•On July 29, Owens Corning announced the appointment of Jonathan Collins as Executive Vice President and Chief Financial Officer, effective August 10, 2026. Collins is a seasoned finance executive with strong operational expertise and a proven background in scaling rapidly evolving businesses. He succeeds Todd Fister who will assume the role of President and Chief Operating Officer and will lead the execution of key enterprise initiatives to drive growth and performance, leveraging the company’s unique OC Advantages™ to further integrate its go-to-market strategy and simplify and standardize work across the enterprise.

•By applying Owens Corning's proven commercial and operational playbook to unlock value for the Doors business, the company has achieved $135 million of enterprise run-rate cost synergies — exceeding its commitment to deliver $125 million by mid-2026. The company is also on track to deliver an additional $75 million of structural cost improvements through network optimization and operational efficiencies.

Cash Returned to Shareholders

•Owens Corning remains committed to returning $2 billion of cash to shareholders over 2025 and 2026 through dividends and share repurchases. In the second quarter, the company returned $264 million to shareholders. The company repurchased 1.7 million shares of common stock for $200 million and paid a quarterly cash dividend of $64 million. At the end of the quarter, 10.8 million shares were available for repurchase under the current authorizations.

“Our second-quarter performance was driven by the disciplined commercial work of our teams and the execution of company-specific initiatives to grow our revenue and improve productivity. We continue to demonstrate our ability to perform across cycles while positioning Owens Corning for even greater success as market conditions improve,” said Executive Vice President and Chief Financial and Operating Officer Todd Fister. “In the second half of the year, we are committed to maintaining our healthy balance sheet, investing in capital projects to grow our future earnings power, and returning significant cash to shareholders. We are also excited to welcome Jonathan Collins to Owens Corning to partner with

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oc-202602250001370946false00013709462026-02-252026-02-25

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 25, 2026

Owens Corning (Exact name of registrant as specified in its charter)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On February 25, 2026, Owens Corning (the "Company") issued a press release announcing its financial results for the fourth quarter of 2025 and the fiscal year ended December 31, 2025. Exhibit 99.1 contains certain financial measures that are considered "non-GAAP financial measures" as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated February 25, 2026

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

February 25, 2026By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202511050001370946false00013709462025-11-052025-11-05

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 5, 2025

Owens Corning (Exact name of registrant as specified in its charter)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On November 5, 2025, Owens Corning issued a press release announcing its financial results for the quarter ended September 30, 2025. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date November 5, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

November 5, 2025By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202508060001370946false00013709462025-08-062025-08-06

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On August 6, 2025, Owens Corning issued a press release announcing its financial results for the quarter ended June 30, 2025. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date August 6, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

August 6, 2025By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202505070001370946false00013709462025-05-072025-05-07

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On May 7, 2025, Owens Corning issued a press release announcing its financial results for the quarter ended March 31, 2025. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date May 7, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

May 7, 2025By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202502240001370946false00013709462025-02-242025-02-24

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.) One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On February 24, 2025, Owens Corning (the "Company") issued a press release announcing its financial results for the fourth quarter of 2024 and the fiscal year ended December 31, 2024. Exhibit 99.1 contains certain financial measures that are considered "non-GAAP financial measures" as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated February 24, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

February 24, 2025By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202411060001370946false00013709462024-11-062024-11-06

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) (Zip Code) 419-248-8000 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

☐If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 2.02Results of Operations and Financial Condition

On November 6, 2024, Owens Corning issued a press release announcing its financial results for the quarter ended September 30, 2024. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date November 6, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

November 6, 2024By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202408060001370946false00013709462024-08-062024-08-06

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning Parkway Toledo, OH 43659 (Address of principal executive offices) 419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On August 6, 2024, Owens Corning issued a press release announcing its financial results for the quarter ended June 30, 2024. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date August 6, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

August 6, 2024By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202404240001370946false00013709462024-04-242024-04-24

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On April 24, 2024, Owens Corning issued a press release announcing its financial results for the quarter ended March 31, 2024. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date April 24, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

April 24, 2024By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202402140001370946false00013709462024-02-142024-02-14

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On February 14, 2024, Owens Corning (the "Company") issued a press release announcing its financial results for the fourth quarter of 2023 and the fiscal year ended December 31, 2023. Exhibit 99.1 contains certain financial measures that are considered "non-GAAP financial measures" as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated February 14, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

Date: February 14, 2024 By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202310250001370946false00013709462023-10-252023-10-25

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On October 25, 2023, Owens Corning issued a press release announcing its financial results for the quarter ended September 30, 2023. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date October 25, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

October 25, 2023By:/s/ Todd W. Fister Todd W. Fister Executive Vice President and Chief Financial Officer

oc-202307260001370946false00013709462023-07-262023-07-26

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On July 26, 2023, Owens Corning issued a press release announcing its financial results for the quarter ended June 30, 2023. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date July 26, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

July 26, 2023By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202304260001370946false00013709462023-04-262023-04-26

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On April 26, 2023, Owens Corning issued a press release announcing its financial results for the quarter ended March 31, 2023. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, date April 26, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

April 26, 2023By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202302150001370946false00013709462023-02-152023-02-15

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On February 15, 2023, Owens Corning (the "Company") issued a press release announcing its financial results for the fourth quarter of 2022 and the fiscal year ended December 31, 2022. Exhibit 99.1 contains certain financial measures that are considered "non-GAAP financial measures" as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated February 15, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

Date: February 15, 2023 By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202210260001370946false00013709462022-10-262022-10-26

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On October 26, 2022, Owens Corning issued a press release announcing its financial results for the quarter ended September 30, 2022. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated October 26, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

October 26, 2022By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202207270001370946false00013709462022-07-272022-07-27

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On July 27, 2022, Owens Corning issued a press release announcing its financial results for the quarter ended June 30, 2022. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated July 27, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

July 27, 2022By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202204270001370946false00013709462022-04-272022-04-27

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On April 27, 2022, Owens Corning issued a press release announcing its financial results for the quarter ended March 31, 2022. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated April 27, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

April 27, 2022By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202202160001370946false00013709462022-02-162022-02-16

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On February 16, 2022, Owens Corning (the "Company") issued a press release announcing its financial results for the fourth quarter of 2021 and the fiscal year ended December 31, 2021. Exhibit 99.1 contains certain financial measures that are considered "non-GAAP financial measures" as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated February 16, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

Date: February 16, 2022 By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer

oc-202110270001370946false00013709462021-10-272021-10-27

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)

DE1-3310043-2109021

(State or other jurisdiction of incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

One Owens Corning ParkwayToledo,Ohio43659 (Address of principal executive offices)(Zip Code)

419-248-8000 (Registrant’s telephone number, including area code) (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading SymbolName of each exchange on which registered Common Stock, par value $0.01 per shareOCNew York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02Results of Operations and Financial Condition

On October 27, 2021, Owens Corning issued a press release announcing its financial results for the quarter ended September 30, 2021. Exhibit 99.1 contains certain financial measures that are considered “non-GAAP financial measures” as defined in the federal securities laws and contains an explanation and, as applicable, a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with accounting principles generally accepted in the United States. The information in Item 2.02 of this Current Report is being furnished pursuant to General Instructions B.2 of Form 8-K and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in Item 2.02 of this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933.

Item 9.01Financial Statements and Exhibits

(d) Exhibits.

Exhibit No.Description 99.1Press Release, dated October 27, 2021

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Owens Corning

October 27, 2021By:/s/ Kenneth S. Parks Kenneth S. Parks Executive Vice President and Chief Financial Officer