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Form 8-K

sec.gov

8-K — Owens Corning

Accession: 0001370946-26-000143

Filed: 2026-05-06

Period: 2026-05-06

CIK: 0001370946

SIC: 3290 (ABRASIVE ASBESTOS & MISC NONMETALLIC MINERAL PRODUCTS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — oc-20260506.htm (Primary)

EX-99.1 (q12026exh-991pressrelease.htm)

GRAPHIC (newsrelease2a.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: oc-20260506.htm · Sequence: 1

oc-20260506

0001370946false00013709462026-05-062026-05-06

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): May 6, 2026

______________________________________

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, 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 class Trading Symbol Name of each exchange on which registered

Common Stock, par value $0.01 per share OC New 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 2.02 Results of Operations and Financial Condition

On May 6, 2026, Owens Corning (the "Company") issued a press release announcing its financial results for the quarter ended March 31, 2026.

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 9.01 Financial Statements and Exhibits

(d) Exhibits.

Exhibit No. Description

99.1

Press Release, dated May 6, 2026

104 Cover 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 6, 2026 By: /s/ Todd W. Fister

Todd W. Fister

Executive Vice President and Chief Financial and Operating Officer

EX-99.1

EX-99.1

Filename: q12026exh-991pressrelease.htm · Sequence: 2

Document

Exhibit 99.1

Owens Corning Delivers Resilient First-Quarter Revenue and Margin Results from Continuing Operations While Completing Portfolio Shift to                 Branded Building Products Leader

TOLEDO, Ohio – May 6, 2026 - Owens Corning (NYSE: OC), a branded building products leader, today reported first-quarter 2026 results.

•Reported Net Sales from Continuing Operations of $2.3 Billion, a 10% Decrease from Prior Year

•Generated Net Earnings Margin from Continuing Operations of 2% and Adjusted EBITDA Margin from Continuing Operations of 16%

•Delivered Diluted EPS from Continuing Operations of $0.47 and Adjusted Diluted EPS from Continuing Operations of $1.22

•Produced Operating Cash Outflow of $154 Million and Free Cash Outflow of $387 Million

•Returned $63 Million to Shareholders through a Cash Dividend

“Our first-quarter results highlight our ability to deliver strong financial performance within current market conditions. This is driven by the strength of our team and the actions we have taken over the last several years to reshape the earnings profile of the company,” said Chair and Chief Executive Officer Brian Chambers. “With the sale of our glass reinforcements business complete, we are now well positioned to operate as a more integrated company and unlock additional cost efficiencies that can be reinvested to accelerate our growth as a branded building products leader. Executing the OC AdvantagesTM across our three complementary businesses, we are focused on enhancing our market positions, helping our customers win and grow, and delivering additional value to shareholders.”

Enterprise Performance from Continuing Operations

($ in millions, except per share amounts)

First-Quarter

2026 2025 Change

Net Sales $2,265 $2,530 $(265) (10)%

Net Earnings Attributable to OC 38 255 (217) (85)%

As a Percent of Net Sales 2% 10% N/A N/A

Adjusted EBITDA 369 565 (196) (35)%

As a Percent of Net Sales 16% 22% N/A N/A

Diluted EPS 0.47 2.95 (2.48) (84)%

Adjusted Diluted EPS 1.22 2.97 (1.75) (59)%

Operating Cash Flow (Outflow)1

(154) (49) (105) *

Free Cash Flow (Outflow)1

(387) (252) (135) *

1 Reflects full company performance inclusive of discontinued operations.

*Calculation not meaningful.

Enterprise Strategy Updates

•In the first quarter, Owens Corning maintained a high level of safety performance with a recordable incident rate (RIR) of 0.46.

•Owens Corning completed the sale of its glass reinforcements business on April 30, 2026, advancing the company’s strategy to operate as a focused building products leader in North America and Europe and enhancing its capital efficiency. The company will realize cash proceeds from the transaction of approximately $280 million and expects to generate additional cash of approximately $50 million to $70 million from excess alloy sales over the next year. Proceeds will be used to fund organic growth initiatives and cash returns to shareholders. The sale positions the company to deliver higher, more resilient margins and cash flows in support of its capital allocation strategy.

Cash Returned to Shareholders

•Owens Corning returned $63 million to shareholders through a cash dividend. The company remains committed to returning $2 billion of cash to shareholders over 2025 and 2026 through dividends and share repurchases. At the end of the quarter, 12.5 million shares were available for repurchase under the current authorizations.

“In the first quarter, Owens Corning executed well in markets that include the carryover impact of 2025 roofing market conditions. We are delivering strong margins at this point in the cycle in Roofing and Insulation, while we continue to reinvest for future growth and margin expansion,” said Executive Vice President and Chief Financial and Operating Officer Todd Fister. “Our teams are highly focused on operational discipline and integrated execution, and in my expanded role I look forward to accelerating the benefits of our more focused company."

Other Notable Highlights

•Owens Corning has been recognized by S&P Global as a top 1% performer in the Sustainability Yearbook for the building products industry, placing the company among a select group of sustainability leaders worldwide.

First-Quarter Business Performance from Continuing Operations

•First-quarter performance was driven by solid commercial and operational execution despite the market environment, resulting in an enterprise adjusted EBITDA margin of 16%.

Segment Results ($ in millions) Net Sales EBITDA EBITDA Margin

Q1 2026

Q1 2025

Q1 2026

Q1 2025

Q1 2026

Q1 2025

Roofing $960 $1,120 $231 $332 24% 30%

Insulation 867 909 167 225 19% 25%

Doors 475 540 34 68 7% 13%

Second-Quarter Outlook for Continuing Operations

•The key economic factors that impact the company’s business are residential repair activity, residential remodeling activity, U.S. housing starts, and commercial construction activity.

•Owens Corning expects discretionary remodeling activity and residential new construction to remain under pressure. Absent major storm activity, the company expects roofing demand to remain solid but slightly down versus prior year due to heightened restocking activity at the end of the first quarter. Non-residential construction activity in North America is expected to be stable, and market conditions in Europe are anticipated to gradually improve.

•Owens Corning anticipates inflationary impact from the Iran conflict to result in incremental costs of approximately $60 million in the second quarter.

•For the second-quarter 2026, Owens Corning expects to continue delivering strong financial performance based on structural improvements made to the company and its market-leading positions. Revenue from continuing operations is expected to be approximately $2.6 billion to $2.7 billion. The company expects to generate enterprise adjusted EBITDA margin from continuing operations of approximately 20% to 22%.

•Not included in the second-quarter outlook is the impact of potential refunds for tariffs paid under the International Emergency Economic Powers Act. Approximately $25 million in refunds may be available to Owens Corning in the quarter.

Current 2026 Financial Outlook for Continuing Operations

General Corporate EBITDA Expenses $245 million to $255 million

Interest Expense $255 million to $265 million

Effective Tax Rate on Adjusted Earnings 24% to 26%

Capital Additions Approximately $800 million

Depreciation and Amortization Approximately $680 million

First-Quarter 2026 Conference Call and Presentation

Wednesday, May 6, 2026

9 a.m. Eastern Time

All Callers

•Live dial-in telephone number: U.S. and Canada 1.833.461.5787; and other international locations +1.585.542.9983

•Meeting code: 708832778 (Please dial in 10-15 minutes before conference call start time)

•Live webcast: https://events.q4inc.com/attendee/708832778

•Webcast replay will be available for one year using the above link.

About Owens Corning

Owens Corning is a branded building products leader with three complementary market‑leading businesses providing roofing, insulation, and doors primarily for residential markets in North America and Europe. The company operates with an integrated go‑to‑market strategy and a unique set of OC Advantages™ – including its iconic brand, unparalleled commercial strength, leading technology, and winning cost position – to help customers win and grow in the market. Owens Corning is committed to helping build better and achieve more through winning partnerships, leading performance, and engaging people. Founded in 1938 and headquartered in Toledo, Ohio, Owens Corning is listed on the New York Stock Exchange (NYSE: OC). For more information, visit www.owenscorning.com.

Use of Non-GAAP Measures

Owens Corning uses non-GAAP measures in its earnings press release that are intended to supplement investors' understanding of the company's financial information. These non-GAAP measures include EBITDA from continuing operations, adjusted EBITDA from continuing operations, adjusted earnings from continuing operations, adjusted diluted earnings per share attributable to Owens Corning common stockholders ("adjusted EPS") from continuing operations and free cash flow. When used to report historical financial information, reconciliations of these non-GAAP measures to the corresponding GAAP measures are included in the financial tables of this press release. Specifically, see Table 2 for adjusted EBITDA from continuing operations, Table 3 for adjusted earnings from continuing operations and adjusted EPS from continuing operations, and Table 8 for free cash flow.

For purposes of internal review of Owens Corning's year-over-year operational performance, management excludes from net earnings attributable to Owens Corning certain items it believes are not representative of ongoing operations. The non-GAAP financial measures resulting from these adjustments (including adjusted EBITDA from continuing operations, adjusted earnings from continuing operations and adjusted EPS from continuing operations) are used internally by Owens Corning for various purposes, including reporting results of operations to the Board of Directors, analysis of performance, and related employee compensation measures. Management believes that these adjustments result in a measure that provides a useful representation of its operational performance; however, the adjusted measures should not be considered in isolation or as a substitute for net earnings attributable to Owens Corning as prepared in accordance with GAAP.

Free cash flow is a non-GAAP liquidity measure used by investors, financial analysts and management to help evaluate the company's ability to generate cash to pursue opportunities that enhance shareholder value. The company defines free cash flow as net cash flow provided by operating activities, less cash paid for property, plant and equipment. Free cash flow is not a measure of residual cash flow available for discretionary expenditures due to the company's mandatory debt service requirements. Free cash flow is used internally by the company for various purposes, including reporting results of operations to the Board of Directors of the company and analysis of performance.

Management believes that these measures provide a useful representation of our operational performance and liquidity; however, the measures should not be considered in isolation or as a substitute for net cash flow provided by operating activities or net earnings attributable to Owens Corning as prepared in accordance with GAAP.

When the company provides forward-looking expectations for non-GAAP measures, the most comparable GAAP measures and a reconciliation between the non-GAAP expectations and the corresponding GAAP measures are generally not available without unreasonable effort due to the variability, complexity and limited visibility of the adjusting items that would be excluded from the non-GAAP measures in future periods. The variability in timing and amount of adjusting items could have significant and unpredictable effect on our future GAAP results.

Forward-Looking Statements

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are subject to risks, uncertainties and other factors and actual results may differ materially from those results projected in the statements. These risks, uncertainties and other factors include, without limitation: levels of residential and non-residential construction activity; demand for our products; industry and economic conditions including, but not limited to, supply chain disruptions, recessionary conditions, inflationary pressures, and interest rate and financial markets volatility; additional changes to tariff, trade or investment policies or laws by the United States, or similar actions, including reciprocal actions, by foreign governments; availability and cost of energy and raw materials; competitive and pricing factors; relationships with key customers and customer concentration in certain areas; our ability to achieve expected synergies, cost reductions and/or productivity improvements; issues related to acquisitions, divestitures

and joint ventures or expansions; climate change, weather conditions and storm activity; legislation and related regulations or interpretations in the United States or elsewhere; domestic and international economic and political conditions, policies or other governmental actions, as well as war and civil disturbance; uninsured losses or major manufacturing disruptions, including those from natural disasters, catastrophes, pandemics, theft or sabotage; environmental, product-related or other legal and regulatory liabilities, proceedings or actions; research and development activities and intellectual property protection; issues involving implementation and protection of information technology systems; foreign exchange and commodity price fluctuations; our level of indebtedness; our liquidity and the availability and cost of credit; the level of fixed costs required to run our business; levels of goodwill or other indefinite-lived intangible assets; loss of key employees and labor disputes or shortages; defined benefit plan funding obligations; and factors detailed from time to time in the company’s filings with the U.S. Securities and Exchange Commission. The information in this news release speaks as of May 6, 2026, and is subject to change. The company does not undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by federal securities laws. Any distribution of this news release after that date is not intended and should not be construed as updating or confirming such information.

Media Inquiries: Investor Inquiries:

Megan James Darren Garvin

mediarelations@owenscorning.com investorrelations@owenscorning.com

419.348.0768 419.248.7747

Owens Corning Company News / Owens Corning Investor Relations News

Table 1

Owens Corning and Subsidiaries

Consolidated Statements of Earnings

(unaudited)

(in millions, except per share amounts)

Three Months Ended March 31,

2026 2025

NET SALES $ 2,265  $ 2,530

COST OF SALES 1,755  1,805

Gross margin 510  725

OPERATING EXPENSES

Marketing and administrative expenses 258  261

Science and technology expenses 37  35

Other expense, net 95  22

Total operating expenses 390  318

OPERATING INCOME 120  407

Non-operating income —  —

EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES 120  407

Interest expense, net 66  64

EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES 54  343

Income tax expense 15  88

NET EARNINGS FROM CONTINUING OPERATIONS 39  255

Net loss from discontinued operations attributable to Owens Corning, net of tax (143) (348)

NET LOSS $ (104) $ (93)

NET EARNINGS FROM CONTINUING OPERATIONS $ 39  $ 255

Net earnings attributable to non-redeemable and redeemable noncontrolling interests 1  —

NET EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING 38  255

Net loss from discontinued operations attributable to Owens Corning, net of tax (143) (348)

NET LOSS ATTRIBUTABLE TO OWENS CORNING $ (105) $ (93)

EARNINGS PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS

Basic - continuing operations $ 0.47  $ 2.97

Basic - discontinued operations $ (1.77) $ (4.05)

Basic $ (1.30) $ (1.08)

Diluted - continuing operations $ 0.47  $ 2.95

Diluted - discontinued operations $ (1.76) $ (4.03)

Diluted $ (1.29) $ (1.08)

Table 2

Owens Corning and Subsidiaries

EBITDA Reconciliation Schedules

(unaudited)

Adjusting (expense) income items to EBITDA are shown in the table below:

Three Months Ended

March 31,

(In millions) 2026 2025

Restructuring excluding depreciation $ (43) $ (3)

Gains on sale of certain precious metals 12  9

Impairment of venture investment (7) —

Gain (Loss) on sale of businesses 4  (2)

Acquisition-related integration costs excluding depreciation (9) (2)

Paroc marine recall (32) (1)

Total adjusting items $ (75) $ 1

The reconciliation from Net earnings from continuing operations attributable to Owens Corning to Adjusted EBITDA from continuing operations is shown in the table below:

Three Months Ended March 31,

(In millions) 2026 2025

NET EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING $ 38  $ 255

Net earnings attributable to non-redeemable and redeemable noncontrolling interests 1  —

NET EARNINGS FROM CONTINUING OPERATIONS 39  255

Income tax expense 15  88

EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES 54  343

Interest expense, net 66  64

EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES 120  407

Less: Adjusting items from above (75) 1

Depreciation & Amortization 174  159

ADJUSTED EBITDA FROM CONTINUING OPERATIONS $ 369  $ 565

Net sales $ 2,265  $ 2,530

ADJUSTED EBITDA as a % of Net sales 16  % 22  %

Table 3

Owens Corning and Subsidiaries

EPS Reconciliation Schedules

(unaudited)

(in millions, except per share data)

A reconciliation from Net earnings from continuing operations attributable to Owens Corning to adjusted earnings from continuing operations and a reconciliation from diluted earnings from continuing operations per share to adjusted diluted earnings from continuing operations per share are shown in the tables below:

Three Months Ended

March 31,

2026 2025

RECONCILIATION TO ADJUSTED EARNINGS FROM CONTINUING OPERATIONS

NET EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING $ 38  $ 255

Adjustment to remove adjusting items and other adjustments (a)

75  (1)

Adjustment to remove adjusting items for depreciation and amortization (b)

5  —

Adjustment to remove tax (benefit)/expense on adjusting items and other adjustments (c)

(18) —

Adjustment to tax expense/(benefit) to reflect pro forma tax rate (d)

(1) 2

ADJUSTED EARNINGS FROM CONTINUING OPERATIONS

$ 99  $ 256

RECONCILIATION TO ADJUSTED DILUTED EARNINGS PER SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS FROM CONTINUING OPERATIONS

DILUTED EARNINGS PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS

$ 0.47  $ 2.95

Adjustment to remove adjusting items and other adjustments (a) 0.92  (0.01)

Adjustment to remove adjusting items for depreciation and amortization (b) 0.06  —

Adjustment to remove tax (benefit)/expense on adjusting items and other adjustments (c) (0.22) —

Adjustment to tax expense/(benefit) to reflect pro forma tax rate (d) (0.01) 0.03

ADJUSTED DILUTED EARNINGS PER SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS FROM CONTINUING OPERATIONS

$ 1.22  $ 2.97

RECONCILIATION TO DILUTED SHARES OUTSTANDING

Weighted average shares outstanding used for basic earnings per share

80.7  85.8

Unvested restricted shares and performance shares

0.4  0.5

Diluted shares outstanding

81.1  86.3

(a) Please refer to Table 2 "EBITDA Reconciliation Schedules" for additional information on adjusting items.

(b) To remove the impact of accelerated depreciation and amortization charges for restructuring projects and impairments which are excluded from adjusted earnings from continuing operations.

(c) The tax impact of adjusting items is based on our expected tax accounting treatment and rate for the jurisdiction of each adjusting item.

(d)

To compute adjusted earnings from continuing operations, we apply a full year pro forma effective tax rate to each quarter presented. For 2026, we have used a full year pro forma effective tax rate of 25%, which is the mid-point of our 2026 effective tax rate guidance of 24% to 26%. For comparability, in 2025, we have used an effective tax rate of 25%, which was our 2025 effective tax rate excluding the adjusting items referenced in (a), (b) and (c).

Table 4

Owens Corning and Subsidiaries

Consolidated Balance Sheets

(unaudited)

(in millions, except per share data)

March 31, December 31,

ASSETS 2026 2025

CURRENT ASSETS

Cash and cash equivalents $ 272  $ 345

Receivables, less allowance of $4 at March 31, 2026 and $4 at December 31, 2025 1,353  937

Inventories 1,492  1,472

Other current assets 175  165

Current assets of discontinued operations 431  426

Total current assets 3,723  3,345

Property, plant and equipment, net 4,121  4,170

Operating lease right-of-use assets 485  507

Goodwill 1,664  1,679

Intangible assets, net 2,498  2,535

Deferred income taxes 13  10

Other non-current assets 475  480

Non-current assets of discontinued operations 112  254

TOTAL ASSETS $ 13,091  $ 12,980

LIABILITIES AND EQUITY

CURRENT LIABILITIES

Accounts payable $ 1,274  $ 1,257

Current operating lease liabilities 84  83

Short-term debt 383  50

Long-term debt - current portion 438  435

Other current liabilities 644  613

Current liabilities of discontinued operations 189  222

Total current liabilities 3,012  2,660

Long-term debt, net of current portion 4,686  4,687

Pension plan liability 38  38

Other employee benefits liability 93  96

Non-current operating lease liabilities 432  450

Deferred income taxes 742  737

Other liabilities 309  323

Non-current liabilities of discontinued operations 96  96

Total liabilities 9,408  9,087

OWENS CORNING STOCKHOLDERS’ EQUITY

Preferred stock, par value $0.01 per share (a) —  —

Common stock, par value $0.01 per share (b) 1  1

Additional paid-in capital 4,237  4,256

Accumulated earnings 4,293  4,463

Accumulated other comprehensive deficit (472) (437)

Cost of common stock in treasury (c) (4,415) (4,430)

Total Owens Corning stockholders’ equity 3,644  3,853

Noncontrolling interests 39  40

Total equity 3,683  3,893

TOTAL LIABILITIES AND EQUITY $ 13,091  $ 12,980

(a)10 shares authorized; none issued or outstanding at March 31, 2026 and December 31, 2025

(b)400 shares authorized; 135.5 issued and 80.5 outstanding at March 31, 2026; 135.5 issued and 80.2 outstanding at December 31, 2025

(c)55.0 shares at March 31, 2026 and 55.3 shares at December 31, 2025

Table 5

Owens Corning and Subsidiaries

Consolidated Statements of Cash Flows

(unaudited)

(in millions)

Three Months Ended March 31,

2026 2025

NET CASH FLOW USED FOR OPERATING ACTIVITIES

Net earnings $ (104) $ (93)

Adjustments to reconcile net losses to cash used for operating activities:

Gain/(Loss) on discontinued operations 182  362

Depreciation and amortization 174  159

Deferred income taxes 6  16

Stock-based compensation expense 18  21

Gains on sale of certain precious metals (12) (9)

Other adjustments to reconcile net earnings to cash from operating activities —  (21)

Change in operating assets and liabilities (404) (481)

Pension fund contribution (2) (1)

Payments for other employee benefits liabilities (4) (3)

Other (8) 1

Net cash flow used for operating activities (154) (49)

NET CASH FLOW USED FOR INVESTING ACTIVITIES

Cash paid for property, plant and equipment (233) (203)

Proceeds from sale of assets or affiliates 43  52

Other —  (8)

Net cash flow used for investing activities (190) (159)

NET CASH FLOW PROVIDED BY FINANCING ACTIVITIES

Proceeds from senior revolving credit and receivables securitization facilities —  329

Payments on senior revolving credit and receivables securitization facilities —  (329)

Net proceeds from commercial paper 330  501

Payments on long-term debt —  (29)

Dividends paid (63) (59)

Purchases of treasury stock (22) (136)

Finance lease payments (13) (11)

Other 3  (2)

Net cash flow provided by financing activities 235  264

Effect of exchange rate changes on cash (5) 23

Net (decrease) increase in cash, cash equivalents and restricted cash (114) 79

Cash, cash equivalents and restricted cash, beginning of period 407  369

CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 293  $ 448

Table 6

Owens Corning and Subsidiaries

Segment Information

(unaudited)

Roofing

The table below provides a summary of net sales and EBITDA for the Roofing segment:

Three Months Ended March 31,

(In millions) 2026 2025

Net sales $ 960  $ 1,120

% change from prior year -14  % 2  %

EBITDA $ 231  $ 332

EBITDA as a % of net sales 24  % 30  %

Insulation

The table below provides a summary of net sales and EBITDA for the Insulation segment:

Three Months Ended March 31,

(In millions) 2026 2025

Net sales $ 867  $ 909

% change from prior year -5  % -5  %

EBITDA $ 167  $ 225

EBITDA as a % of net sales 19  % 25  %

Doors

The table below provides a summary of net sales and EBITDA for the Doors segment:

Three Months Ended March 31,

(In millions) 2026 2025

Net sales $ 475  $ 540

% change from prior year -12  % N/A

EBITDA $ 34  $ 68

EBITDA as a % of net sales 7  % 13  %

Table 7

Owens Corning and Subsidiaries

Corporate, Other and Eliminations

(unaudited)

Corporate, Other and Eliminations

The table below provides a summary of EBITDA for the Corporate, Other and Eliminations category:

Three Months Ended March 31,

(In millions) 2026 2025

Restructuring excluding depreciation $ (43) $ (3)

Acquisition-related integration costs excluding depreciation (9) (2)

Gains on sale of certain precious metals 12  9

Impairment of venture investment (7) —

Paroc marine recall (32) (1)

Gain (Loss) on sale of businesses 4  (2)

General corporate expense and other (63) (60)

EBITDA $ (138) $ (59)

Table 8

Owens Corning and Subsidiaries

Free Cash Flow Reconciliation Schedule

(unaudited)

The reconciliation from net cash flow provided by operating activities to free cash flow is shown in the table below:

Three Months Ended March 31,

(In millions) 2026 2025

NET CASH FLOW USED FOR OPERATING ACTIVITIES $ (154) $ (49)

Less: Cash paid for property, plant and equipment (233) (203)

FREE CASH FLOW $ (387) $ (252)

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v3.26.1

Document and Entity Information

May 06, 2026

Cover [Abstract]

Document Type

8-K

Document Period End Date

May 06, 2026

Entity Registrant Name

Owens Corning

Entity Incorporation, State or Country Code

DE

Entity File Number

1-33100

Entity Tax Identification Number

43-2109021

Entity Address, Address Line One

One Owens Corning Parkway

Entity Address, City or Town

Toledo

Entity Address, State or Province

OH

Entity Address, Postal Zip Code

43659

City Area Code

419

Local Phone Number

248-8000

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common Stock, par value $0.01 per share

Trading Symbol

OC

Security Exchange Name

NYSE

Entity Emerging Growth Company

false

Entity Central Index Key

0001370946

Amendment Flag

false

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

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Period Type:

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- Definition

Area code of city

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No definition available.

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Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

Cover page.

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No definition available.

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- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

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Name:

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Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

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Name:

dei_DocumentType

Namespace Prefix:

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Data Type:

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Balance Type:

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Period Type:

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- Definition

Address Line 1 such as Attn, Building Name, Street Name

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No definition available.

+ Details

Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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Period Type:

duration

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- Definition

Name of the City or Town

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No definition available.

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Name:

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Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

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Period Type:

duration

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- Definition

Code for the postal or zip code

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No definition available.

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Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

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Period Type:

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- Definition

Name of the state or province.

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No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

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Data Type:

dei:stateOrProvinceItemType

Balance Type:

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Period Type:

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X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Data Type:

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Balance Type:

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Period Type:

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- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Namespace Prefix:

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Data Type:

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Balance Type:

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

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Data Type:

dei:fileNumberItemType

Balance Type:

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Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

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Namespace Prefix:

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Data Type:

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Balance Type:

na

Period Type:

duration

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Data Type:

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Name:

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Namespace Prefix:

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Data Type:

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Period Type:

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- Definition

Local phone number for entity.

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No definition available.

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Name:

dei_LocalPhoneNumber

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

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Period Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Name:

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Namespace Prefix:

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Data Type:

xbrli:booleanItemType

Balance Type:

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Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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dei_PreCommencementTenderOffer

Namespace Prefix:

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Data Type:

xbrli:booleanItemType

Balance Type:

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Period Type:

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- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

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Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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Name:

dei_SecurityExchangeName

Namespace Prefix:

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Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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Name:

dei_SolicitingMaterial

Namespace Prefix:

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Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

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No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

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Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

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X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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