Owens Corning

The Company tests goodwill and indefinite-lived intangible assets for impairment as of October 1st each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying amount.

Goodwill

The changes in the net carrying amount of goodwill by segment are as follows:

Third Quarter Goodwill Triggering Event

In the third quarter of 2026, the Company performed its ongoing assessment to consider whether events or circumstances had occurred that could more likely than not reduce the fair value of our reporting units below their carrying values. During the third quarter of 2026, a reduced financial outlook for the Doors reporting unit was due to increased inflationary pressures and lower volumes, driven by heightened macroeconomic uncertainties including declines in North America discretionary residential repair and remodeling activities and challenges in North America residential new construction. Considering these developments together with the reporting unit's narrow cushion, due to the impairment taken in the fourth quarter of 2025, the Company concluded that a triggering event had occurred, requiring interim goodwill impairment testing as of September 30, 2026.

The test resulted in the carrying value of the reporting unit exceeding its fair value, and, resultingly, the Company recorded a $366 million pre-tax non-cash impairment charge, fully impairing the remaining Doors reporting unit goodwill in the third quarter of 2026. This charge was recorded in the Goodwill impairment line on the Consolidated Statements of Earnings and was included in the Corporate, Other and Eliminations reporting category. The fair value of the Doors reporting unit was determined based on the discounted cash flow analysis, or income approach. The reduction in fair value, and corresponding impairment charge, was primarily driven by an anticipated decrease in EBITDA, including 2027 in the Company's forecast. The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, long-term growth rate, adjusted EBITDA margins and discount rate.

Other Intangible Assets

Other intangible assets consist of the following:

(a) Other primarily includes emissions rights.

Indefinite-Lived Intangible Assets

In the third quarter of 2026, the Company performed an interim impairment test for an indefinite-lived tradename used by its Doors reportable segment, triggered by the same conditions that precipitated the interim goodwill impairment test described above for the third quarter of 2026 as well as a management decision regarding a change in the expected use of the tradename. This decision changed the period over which the tradename was expected to provide economic benefits and was an additional factor in management's impairment assessment. As a result of this test, the Company recorded a pre-tax non-cash impairment charge of $77 million. This charge was recorded in the Intangible assets impairment line on the Consolidated Statements of Earnings and was included in the Corporate, Other and Eliminations reporting category. Following the impairment assessment, the Company determined that the tradename no longer had an indefinite useful life and, as of September 30, 2026, reclassified the remaining carrying value of the tradename of $79 million as a definite-lived intangible asset.

Fair value of the impaired tradename was calculated using the relief-from-royalty method by applying an estimated market participant royalty rate of 0.5% to the forecasted revenues associated with the tradename. The resulting cash flows from this calculation were discounted at a rate based on a market participant discount rate. The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, long-term growth rate and royalty rate.

Definite-Lived Intangible Assets

The Company amortizes the cost of other intangible assets over their estimated useful lives which, individually, range up to 25 years. The Company's future cash flows are not materially impacted by its ability to extend or renew agreements related to its amortizable intangible assets.

Amortization expense for intangible assets for the three and nine months ended September 30, 2026 was $33 million and $101 million, respectively. Amortization expense for intangible assets for the three and nine months ended September 30, 2025 was $37 million and $114 million, respectively. Amortization expense for intangible assets is estimated to be $39 million for the remainder of 2026.

In the third quarter of 2026, the Company determined that the tradename discussed above no longer had an indefinite useful life as a result of management's expected use of the tradename. Following recognition of the $77 million impairment charge, the remaining carrying value of the tradename of $79 million was reclassified to definite-lived intangible assets as of September 30, 2026 and will be amortized prospectively over its estimated remaining useful life of 3 years.

The estimated amortization expense for intangible assets for the next five years is as follows: