Summary of Significant Accounting Policies	9 Months Ended
May 30, 2026
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation These Consolidated Financial Statements of UniFirst Corporation (the “Company”) included herein have been prepared, without audit, in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations; however, the Company believes that the information furnished reflects all adjustments (consisting only of normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of results for the interim period. It is suggested that these Consolidated Financial Statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended August 30, 2025. There have been no material changes in the accounting policies followed by the Company during the current fiscal year. Results for an interim period are not indicative of results for any future interim periods or for an entire fiscal year. Merger Agreement On March 10, 2026, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Cintas Corporation (“Parent” or “Cintas”), Bruin Merger Sub I, Inc., a wholly owned subsidiary of Cintas (“Merger Sub Inc.”), and Bruin Merger Sub II, LLC, a wholly owned subsidiary of Cintas (“Merger Sub LLC”). Subject to the terms and conditions of the Merger Agreement, Merger Sub Inc. will be merged with and into the Company (the “First Merger”), whereupon the separate existence of Merger Sub Inc. will cease, and the Company will continue as the surviving corporation of the First Merger and a wholly owned subsidiary of Parent and immediately after the First Merger, the Company will be merged with and into Merger Sub LLC (the “Second Merger,” and, together with the First Merger, the “Mergers”), whereupon the separate existence of the Company will cease, and Merger Sub LLC will continue as the surviving entity of the Second Merger and a wholly owned subsidiary of Parent. At the effective time of the First Merger, each share of (i) common stock, par value $0.10 per share, and (ii) Class B common stock, par value $0.10 per share, of the Company (clauses (i) and (ii), “Common Stock”) issued and outstanding immediately prior to the effective time of the First Merger (other than shares of the Company’s Common Stock held in the Company’s treasury or held directly by a subsidiary of the Company, Cintas, Merger Sub Inc. or Merger Sub LLC) will convert into the right to receive: $155.00 in cash and 0.7720 shares of fully paid and nonassessable Cintas common stock. No fractional shares of Cintas common stock will be issued in the Mergers, and holders of the Company’s Common Stock will receive cash in lieu of any fractional shares of Cintas common stock. The Merger Agreement contains customary representations, warranties, covenants and closing conditions, including approval by the Corporation’s shareholders. On June 11, 2026, the Company’s shareholders approved the Merger Agreement at a virtual special meeting of shareholders. In addition, on June 11, 2026, the Company and Cintas each received a request for additional information and documentary material (a “Second Request”) from the U.S. Federal Trade Commission in connection with its review of the proposed Mergers under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. Issuance of the Second Request extends the waiting period under the HSR Act until 30 days after both Cintas and the Company substantially comply with the Second Request, unless the waiting period is extended voluntarily by Cintas and the Company or terminated earlier by the FTC. The completion of the Mergers remains subject to the satisfaction or waiver of the remaining customary closing conditions, including the receipt of required regulatory approvals, and includes specified termination rights if the consummation of the Mergers does not occur on or before January 10, 2027, subject to an automatic extension for up to two periods of four months under certain circumstances. The Merger Agreement provides for the payment by the Company to Cintas of a termination fee of $213.3 million if the Merger Agreement is terminated in specified circumstances, and for payment by Cintas to the Company of a termination fee of $350.0 million if the Merger Agreement is terminated in specified circumstances. For additional information, refer to the Company’s Current Reports on Form 8-K filed with the SEC on March 11, 2026 and June 12, 2026. Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which enhances effective tax rate reconciliation disclosure requirements and provides clarity to the disclosures of income taxes paid, income before taxes and provision for income taxes. The amendments are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The amendments in this update should be applied on a prospective basis. Retrospective application is permitted. The Company has evaluated the provisions of this ASU and does not expect its adoption to have a material impact on the Company's consolidated financial statements other than requiring additional income tax disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures. The ASU requires a public business entity to provide disaggregated disclosures of certain categories of expenses on an annual and interim basis including purchases of inventory, employee compensation, depreciation, and intangible asset amortization for each income statement line item that contains those expenses. This ASU is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating this ASU to determine its impact on the Company’s disclosures. In September 2025, the FASB issued ASU 2025-06, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. This ASU amends the guidance in ASC 350-40 to modernize the recognition and disclosure framework for internal-use software costs by eliminating the previous “development stage” model and introducing a more principles- and judgment-based approach. ASU 2025-06 is effective for fiscal years beginning after December 15, 2027 and for interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2025-06 on its consolidated financial statements. Other recent accounting pronouncements issued by the FASB, including its Emerging Issues Task Force, the American Institute of Certified Public Accountants, and the SEC have not had, or are not believed by management to have, a material impact on the Company’s present or future financial statements.

These Consolidated Financial Statements of UniFirst Corporation (the “Company”) included herein have been prepared, without audit, in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations; however, the Company believes that the information furnished reflects all adjustments (consisting only of normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of results for the interim period.

It is suggested that these Consolidated Financial Statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended August 30, 2025. There have been no material changes in the accounting policies followed by the Company during the current fiscal year. Results for an interim period are not indicative of results for any future interim periods or for an entire fiscal year.

On March 10, 2026, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Cintas Corporation (“Parent” or “Cintas”), Bruin Merger Sub I, Inc., a wholly owned subsidiary of Cintas (“Merger Sub Inc.”), and Bruin Merger Sub II, LLC, a wholly owned subsidiary of Cintas (“Merger Sub LLC”).

Subject to the terms and conditions of the Merger Agreement, Merger Sub Inc. will be merged with and into the Company (the “First Merger”), whereupon the separate existence of Merger Sub Inc. will cease, and the Company will continue as the surviving corporation of the First Merger and a wholly owned subsidiary of Parent and immediately after the First Merger, the Company will be merged with and into Merger Sub LLC (the “Second Merger,” and, together with the First Merger, the “Mergers”), whereupon the separate existence of the Company will cease, and Merger Sub LLC will continue as the surviving entity of the Second Merger and a wholly owned subsidiary of Parent.

At the effective time of the First Merger, each share of (i) common stock, par value $0.10 per share, and (ii) Class B common stock, par value $0.10 per share, of the Company (clauses (i) and (ii), “Common Stock”) issued and outstanding immediately prior to the effective time of the First Merger (other than shares of the Company’s Common Stock held in the Company’s treasury or held directly by a subsidiary of the Company, Cintas, Merger Sub Inc. or Merger Sub LLC) will convert into the right to receive: $155.00 in cash and 0.7720 shares of fully paid and nonassessable Cintas common stock. No fractional shares of Cintas common stock will be issued in the Mergers, and holders of the Company’s Common Stock will receive cash in lieu of any fractional shares of Cintas common stock.

The Merger Agreement contains customary representations, warranties, covenants and closing conditions, including approval by the Corporation’s shareholders. On June 11, 2026, the Company’s shareholders approved the Merger Agreement at a virtual special meeting of shareholders. In addition, on June 11, 2026, the Company and Cintas each received a request for additional information and documentary material (a “Second Request”) from the U.S. Federal Trade Commission in connection with its review of the proposed Mergers under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended. Issuance of the Second Request extends the waiting period under the HSR Act until 30 days after both Cintas and the Company substantially comply with the Second Request, unless the waiting period is extended voluntarily by Cintas and the Company or terminated earlier by the FTC. The completion of the Mergers remains subject to the satisfaction or waiver of the remaining customary closing conditions, including the receipt of required regulatory approvals, and includes specified termination rights if the consummation of the Mergers does not occur on or before January 10, 2027, subject to an automatic extension for up to two periods of four months under certain circumstances. The Merger Agreement provides for the payment by the Company to Cintas of a termination fee of $213.3 million if the Merger Agreement is terminated in specified circumstances, and for payment by Cintas to the Company of a termination fee of $350.0 million if the Merger Agreement is terminated in specified circumstances.

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which enhances effective tax rate reconciliation disclosure requirements and provides clarity to the disclosures of income taxes paid, income before taxes and provision for income taxes. The amendments are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The amendments in this update should be applied on a prospective basis. Retrospective application is permitted. The Company has evaluated the provisions of this ASU and does not expect its adoption to have a material impact on the Company's consolidated financial statements other than requiring additional income tax disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures. The ASU requires a public business entity to provide disaggregated disclosures of certain categories of expenses on an annual and interim basis including purchases of inventory, employee compensation, depreciation, and intangible asset amortization for each income statement line item that contains those expenses. This ASU is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating this ASU to determine its impact on the Company’s disclosures.

In September 2025, the FASB issued ASU 2025-06, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. This ASU amends the guidance in ASC 350-40 to modernize the recognition and disclosure framework for internal-use software costs by eliminating the previous “development stage” model and introducing a more principles- and judgment-based approach. ASU 2025-06 is effective for fiscal years beginning after December 15, 2027 and for interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2025-06 on its consolidated financial statements.