Owens Corning

5. DERIVATIVE FINANCIAL INSTRUMENTS

The Company is exposed to, among other risks, the impact of changes in commodity prices, foreign currency exchange rates, and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes.

The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. Contracts with counterparties generally contain right of offset provisions. These provisions effectively reduce the Company’s exposure to credit risk in situations where the Company has gain and loss positions outstanding with a single counterparty. It is the Company’s policy to offset on the Consolidated Balance Sheets the amounts recognized for derivative instruments with any cash collateral arising from derivative instruments executed with the same counterparty under a master netting agreement. As of December 31, 2025 and 2024, the Company did not have any amounts on deposit with any of its counterparties, nor did any of its counterparties have any amounts on deposit with the Company.

Derivative Fair Values

Our derivatives consist of natural gas forward swaps, foreign exchange forward contracts and U.S. treasury rate lock agreements, all of which are over-the-counter and not traded through an exchange. The Company uses widely accepted valuation tools to determine fair value, such as discounting cash flows to calculate a present value for the derivatives. The models use Level 2 inputs, which are observable market-based inputs or unobservable inputs that are corroborated by market data. Examples include forward curves and other commonly quoted observable transactions and prices. The fair value of our derivatives and hedging instruments are all classified as Level 2 investments within the three-tier hierarchy.

The following table presents the fair value of derivatives and hedging instruments and the respective location on the Consolidated Balance Sheets:

Consolidated Statements of (Loss) Earnings Activity

The following table presents the impact and respective location of derivative activities on the Consolidated Statements of (Loss) Earnings:

(a)Accumulated Other Comprehensive Earnings (Deficit) (“AOCI”)

(b)(Gains) / losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Other expense, net. Please refer to the “Other Derivatives” section below for additional detail.

(c)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax. Please refer to the “Other Derivatives” section below for additional detail.

Consolidated Statements of Comprehensive (Loss) Earnings Activity

The following table presents the impact of derivative activities on the Consolidated Statements of Comprehensive (Loss) Earnings:

Cash Flow Hedges

The Company uses derivative financial instruments, which qualify as cash flow hedges, to manage forecasted exposure natural gas prices. As of December 31, 2025 and 2024 the notional amounts of these natural gas forward swaps for both continuing and discontinued operations were 6 million MMBTu (or MMBTu equivalent based on U.S. and European indices) and 7 million, respectively. The Company has designated these natural gas forward swaps as cash flow hedges, with the last hedge maturing no later than March 2027. A net unrecognized loss of $2 million related to these natural gas forward swaps was included in AOCI as of December 31, 2025, $2 million of which is expected to be reclassified into earnings in the next 12 months.

In 2020, the Company entered into a $175 million forward U.S. Treasury rate lock agreement to manage the U.S. Treasury portion of its interest rate risk associated with the anticipated issuance of certain 10-year fixed rate senior notes. The Company designated this outstanding forward U.S. Treasury rate lock agreement, which expired on December 15, 2022, as a cash flow hedge. The locked fixed rate of this agreement was 0.994%. In September 2022, a gain of $6 million was recognized as a result of a change in the forecasted issuance of certain senior notes. In December 2022, the Company received cash of $37 million upon the settlement of the rate lock agreement, of which $31 million will be amortized as a component of interest expense upon the future issuance of senior notes. In May 2024, the Company issued new senior notes and began amortizing the $31 million over the life of the Company's 5.700% senior notes due 2034, of which $3 million was recognized during the twelve months ended December 31, 2025. The unrecognized gain of $26 million was included in AOCI as of December 31, 2025.

Other Derivatives

The Company uses foreign exchange forward contracts to manage existing exposures to foreign exchange risk related to assets and liabilities recorded on the Consolidated Balance Sheets. As of December 31, 2025, the Company had notional amounts of $216 million for non-designated derivative financial instruments related to foreign currency exposures in U.S. Dollars primarily related to the Mexican Peso, Indian Rupee, Brazilian Real, Hong Kong Dollar, European Euro, South Korean Won, Japanese Yen and the Chinese Yuan. In addition, the Company had notional amounts of $153 million for non-designated derivative financial instruments related to foreign currency exposures in European Euro primarily related to the Polish Złoty, U.S. Dollar, Danish Krone and the Norwegian Krone.