DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	9 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION About Griffon Corporation Griffon Corporation (the “Company,” “Griffon,” “we” or “us”) is a leading provider of residential and commercial building products. The Company is the largest North American manufacturer and marketer of garage doors under the Clopay, IDEAL and Holmes brands, and rolling steel door and grille products under the Clopay, Cornell, and Cookson brands. The Company is also a leading provider of residential, industrial, and commercial ceiling fans sold under the Hunter, Casablanca, and Jan Fan brands. The Company, founded in 1959, is organized as a Delaware corporation headquartered in New York, N.Y. and listed on the New York Stock Exchange (NYSE:GFF). On February 5, 2026, Griffon announced that it entered into a definitive agreement to form a joint venture with ONCAP Management Partners, L.P. (“ONCAP”), the mid-market private equity platform of Onex Corporation (TSX:ONEX), to create a leading global provider of hand tools, home organization solutions, and lawn and garden products for professionals and consumers. The joint venture combines the United States and Canada businesses of Griffon’s AMES Companies (“AMES North America”) with the Bellota Tools, Corona, and Burgon & Ball businesses of VNPI Global Investments and Services, S.L. and Bellota Holding AG (“Venanpri”), an ONCAP majority-owned portfolio company. On June 9, 2026, Griffon completed the previously announced formation of the joint venture between its AMES North America business and Venanpri. The joint venture, named Veritage Brands (“Veritage”), is managed as a subsidiary of Venanpri which, together with other affiliates of ONCAP, holds a 57% equity interest. Upon closing, Griffon received $100,000 in cash, a $161,100 second-lien paid-in-kind (“PIK”) debt receivable, and will participant in the governance and oversight of the joint venture with its 43% equity interest that has an initial carrying value of $118,600. Griffon's investment in the joint venture is accounted for under the equity method. Refer to Note 7, Equity Method Investment for further details. Griffon also announced on February 5, 2026 the initiation of a comprehensive review of strategic alternatives for its AMES Australasia and United Kingdom (“U.K.”) operations. On June 8, 2026, Griffon announced that it had entered into a definitive agreement to sell its AMES Australasia business to a joint venture it is forming with an investment group led by the management of AMES Australasia with support from Australian financial investors. On July 31, 2026, Griffon completed the previously announced formation of the joint venture. Under the terms of the agreement, at closing, Griffon received AUD $258,000 (USD $180,910) in cash, a AUD $69,300 (approximately USD $48,593) PIK note receivable, and a 49% equity interest that has an initial carrying value of AUD $29,800 (USD $20,896). Griffon will participate in the governance and oversight of the joint venture as a 49% equity holder, while the remaining 51% ownership interest will be held by the investment group that includes certain members of the current AMES Australasia management team. Griffon's investment in the joint venture will be accounted for under the equity method. As of March 31, 2026, the Company ceased its AMES U.K. operations and is currently in the process of liquidating its remaining assets and settling its remaining liabilities. As a result of these actions, AMES North America, Australia, and U.K. operations are reported as discontinued operations in the Condensed Consolidated Statements of Operations for all periods presented. Except for certain U.K. assets and liabilities not held for sale, we classified the assets and liabilities associated with AMES North America, Australia and U.K. operations as held for sale in the Condensed Consolidated Balance Sheet as of September 30, 2025, and we classified the assets and liabilities associated with AMES' Australia and U.K. discontinued operations as held for sale in the Condensed Consolidated Balance Sheet as of June 30, 2026. The U.K. assets classified as held for sale relate to inventory and property, plant and equipment that will be sold in liquidation. Accordingly, all references made to results and information in this Quarterly Report on Form 10-Q are to Griffon's continuing operations, unless specifically noted otherwise. Refer to Note 16, Discontinued Operations for further details. Griffon now conducts its operations through one reportable segment. All prior period comparative segment information presented has been applied retrospectively to reflect the new segment structure. For further information regarding our segment reporting, see Note 13, Reportable Segment. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information, and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all the information and footnotes required by US GAAP for complete financial statements. As such, they should be read together with Griffon’s Annual Report on Form 10-K for the fiscal year ended September 30, 2025, which provides a more complete explanation of Griffon’s accounting policies, financial position, operating results, business, properties and other matters. In the opinion of management, these financial statements reflect all adjustments considered necessary for a fair statement of interim results. Griffon’s businesses are seasonal; for this and other reasons, the financial results of the Company for any interim period are not necessarily indicative of the results for the full year. The Condensed Consolidated Balance Sheet information at September 30, 2025 was derived from the audited financial statements included in Griffon’s Annual Report on Form 10-K for the year ended September 30, 2025. The Company accounts for its investments in unconsolidated subsidiaries under the equity method of accounting when it has the ability to exercise significant influence, but not control, over an investee. Significant influence is generally considered to exist when the Company holds an ownership interest in the voting stock of an investee of between 20% and 50%, although other factors may also be considered. Equity method investments are recorded within Equity Method Investments in the Condensed Consolidated Balance Sheets. Veritage is in the process of attributing the difference between its enterprise value and the carrying value of assets and liabilities at the date of formation to identifiable assets and liabilities, with any residual to be recorded as goodwill. Any basis differences will be amortized over the estimated useful lives of the identified assets. The Company expects Veritage to complete this process by September 30, 2026. Under the equity method of accounting, the Company recognizes its proportionate share of the joint venture's earnings or losses in the Condensed Consolidated Statement of Operations. The Company records results from non-strategic investments in equity interest in earnings (losses) of unconsolidated joint ventures. The Company records its proportionate share of its joint venture's earnings or losses on a three-month lag. As such, the Company did not record its proportionate share of the joint venture's earnings or loss during the three and nine months ended June 30, 2026. On June 9, 2026, Griffon completed the sale of AMES North America business to Veritage. As of June 30, 2026, the Company recorded its initial investment within Equity Method Investments, and its second-lien PIK debt receivable within Notes Receivable (related party) on the Condensed Consolidated Balance Sheets. The Condensed Consolidated Financial Statements include the accounts of Griffon and all subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. Certain amounts in prior years may have been reclassified to conform to the current year presentation. The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. These estimates may be adjusted due to changes in economic, industry or customer financial conditions, as well as changes in technology or demand. Significant estimates include expected loss allowances for credit losses and returns, net realizable value of inventories, restructuring reserves, valuation of goodwill and intangible assets, assumptions associated with pension benefit obligations and income or expenses, useful lives associated with depreciation and amortization of intangible and fixed assets, warranty reserves, sales incentive accruals, assumptions associated with stock based compensation valuation, income taxes and tax valuation reserves, environmental reserves, legal reserves, insurance reserves, the valuation of assets and liabilities of discontinued operations and the accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions Griffon may undertake in the future. Actual results may ultimately differ from these estimates.

Griffon Corporation (the “Company,” “Griffon,” “we” or “us”) is a leading provider of residential and commercial building products. The Company is the largest North American manufacturer and marketer of garage doors under the Clopay, IDEAL and Holmes brands, and rolling steel door and grille products under the Clopay, Cornell, and Cookson brands. The Company is also a leading provider of residential, industrial, and commercial ceiling fans sold under the Hunter, Casablanca, and Jan Fan brands.

On February 5, 2026, Griffon announced that it entered into a definitive agreement to form a joint venture with ONCAP Management Partners, L.P. (“ONCAP”), the mid-market private equity platform of Onex Corporation (TSX:ONEX), to create a leading global provider of hand tools, home organization solutions, and lawn and garden products for professionals and consumers. The joint venture combines the United States and Canada businesses of Griffon’s AMES Companies (“AMES North America”) with the Bellota Tools, Corona, and Burgon & Ball businesses of VNPI Global Investments and Services, S.L. and Bellota Holding AG (“Venanpri”), an ONCAP majority-owned portfolio company. On June 9, 2026, Griffon completed the previously announced formation of the joint venture between its AMES North America business and Venanpri. The joint venture, named Veritage Brands (“Veritage”), is managed as a subsidiary of Venanpri which, together with other affiliates of ONCAP, holds a 57% equity interest. Upon closing, Griffon received $100,000 in cash, a $161,100 second-lien paid-in-kind (“PIK”) debt receivable, and will participant in the governance and oversight of the joint venture with its 43% equity interest that has an initial carrying value of $118,600. Griffon's investment in the joint venture is accounted for under the equity method. Refer to Note 7, Equity Method Investment for further details.

Griffon also announced on February 5, 2026 the initiation of a comprehensive review of strategic alternatives for its AMES Australasia and United Kingdom (“U.K.”) operations. On June 8, 2026, Griffon announced that it had entered into a definitive agreement to sell its AMES Australasia business to a joint venture it is forming with an investment group led by the management of AMES Australasia with support from Australian financial investors. On July 31, 2026, Griffon completed the previously announced formation of the joint venture. Under the terms of the agreement, at closing, Griffon received AUD $258,000 (USD $180,910) in cash, a AUD $69,300 (approximately USD $48,593) PIK note receivable, and a 49% equity interest that has an initial carrying value of AUD $29,800 (USD $20,896). Griffon will participate in the governance and oversight of the joint venture as a 49% equity holder, while the remaining 51% ownership interest will be held by the investment group that includes certain members of the current AMES Australasia management team. Griffon's investment in the joint venture will be accounted for under the equity method. As of March 31, 2026, the Company ceased its AMES U.K. operations and is currently in the process of liquidating its remaining assets and settling its remaining liabilities.

As a result of these actions, AMES North America, Australia, and U.K. operations are reported as discontinued operations in the Condensed Consolidated Statements of Operations for all periods presented. Except for certain U.K. assets and liabilities not held for sale, we classified the assets and liabilities associated with AMES North America, Australia and U.K. operations as held for sale in the Condensed Consolidated Balance Sheet as of September 30, 2025, and we classified the assets and liabilities associated with AMES' Australia and U.K. discontinued operations as held for sale in the Condensed Consolidated Balance Sheet as of June 30, 2026. The U.K. assets classified as held for sale relate to inventory and property, plant and equipment that will be sold in liquidation. Accordingly, all references made to results and information in this Quarterly Report on Form 10-Q are to Griffon's continuing operations, unless specifically noted otherwise. Refer to Note 16, Discontinued Operations for further details.

Griffon now conducts its operations through one reportable segment. All prior period comparative segment information presented has been applied retrospectively to reflect the new segment structure. For further information regarding our segment reporting, see Note 13, Reportable Segment.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information, and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all the information and footnotes required by US GAAP for complete financial statements. As such, they should be read together with Griffon’s Annual Report on Form 10-K for the fiscal year ended September 30, 2025, which provides a more complete explanation of Griffon’s accounting policies, financial position, operating results, business, properties and other matters. In the opinion of management, these financial statements reflect all adjustments considered necessary for a fair statement of interim results. Griffon’s businesses are seasonal; for this and other reasons, the financial results of the Company for any interim period are not necessarily indicative of the results for the full year.

The Company accounts for its investments in unconsolidated subsidiaries under the equity method of accounting when it has the ability to exercise significant influence, but not control, over an investee. Significant influence is generally considered to exist when the Company holds an ownership interest in the voting stock of an investee of between 20% and 50%, although other factors may also be considered.

Equity method investments are recorded within Equity Method Investments in the Condensed Consolidated Balance Sheets. Veritage is in the process of attributing the difference between its enterprise value and the carrying value of assets and liabilities at the date of formation to identifiable assets and liabilities, with any residual to be recorded as goodwill. Any basis differences will be amortized over the estimated useful lives of the identified assets. The Company expects Veritage to complete this process by September 30, 2026.

Under the equity method of accounting, the Company recognizes its proportionate share of the joint venture's earnings or losses in the Condensed Consolidated Statement of Operations. The Company records results from non-strategic investments in equity interest in earnings (losses) of unconsolidated joint ventures. The Company records its proportionate share of its joint venture's earnings or losses on a three-month lag. As such, the Company did not record its proportionate share of the joint venture's earnings or loss during the three and nine months ended June 30, 2026.

On June 9, 2026, Griffon completed the sale of AMES North America business to Veritage. As of June 30, 2026, the Company recorded its initial investment within Equity Method Investments, and its second-lien PIK debt receivable within Notes Receivable (related party) on the Condensed Consolidated Balance Sheets.

The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. These estimates may be adjusted due to changes in economic, industry or customer financial conditions, as well as changes in technology or demand. Significant estimates include expected loss allowances for credit losses and returns, net realizable value of inventories, restructuring reserves, valuation of goodwill and intangible assets, assumptions associated with pension benefit obligations and income or expenses, useful lives associated with depreciation and amortization of intangible and fixed assets, warranty reserves, sales incentive accruals, assumptions associated with stock based compensation valuation, income taxes and tax valuation reserves, environmental reserves, legal reserves, insurance reserves, the valuation of assets and liabilities of discontinued operations and the accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions Griffon may undertake in the future. Actual results may ultimately differ from these estimates.