Exhibit 99

Investor Relations Contact

Shane O'Connor, Executive Vice President & CFO

UniFirst Corporation

978-658-8888

shane_oconnor@unifirst.com

UNIFIRST ANNOUNCES FINANCIAL RESULTS FOR THE FIRST QUARTER OF FISCAL 2026

Wilmington, MA – January 7, 2026 – UniFirst Corporation (NYSE: UNF) (“UniFirst” or the “Company”) today reported results for its fiscal 2026 first quarter ended November 29, 2025.

First Quarter 2026 Consolidated Results

“Our first quarter performance was consistent with our expectations and reflects the impact of planned investments designed to accelerate growth and enhance operational efficiency,” said Steven Sintros, UniFirst President and Chief Executive Officer. “While these initiatives weighed on near-term margins, we believe they position UniFirst for improved profitability over time. Importantly, organic growth driven by new customer wins and improved retention reflects the strength of UniFirst’s differentiated, service-driven model focused on reliability, local accountability and long-term relationships.”

Mr. Sintros added, “Our flexible balance sheet and cash flow generation enabled us to continue returning capital to shareholders through share repurchases and an increased dividend, marking our eighth consecutive year of dividend growth.”

The Company's results for the first quarter of fiscal 2026 and 2025 included approximately $2.3 million and $2.5 million, respectively, of costs related to its enterprise resource planning project (“Key Initiative”), which is expected to enhance long-term growth, scalability, operating efficiency and profitability. In the first quarter of fiscal 2026 and 2025, these costs decreased:

Segment Reporting Results

Uniform & Facility Service Solutions

First Aid & Safety Solutions

Other

Balance Sheet and Capital Allocation

Fiscal 2026 Financial Outlook

UniFirst reaffirmed its full-year fiscal 2026 guidance provided on October 22, 2025, including consolidated revenues of between $2.475 billion and $2.495 billion and fully diluted earnings per share between $6.58 and $6.98.

This guidance continues to include an estimated $7.0 million of costs directly attributable to the Company’s Key Initiative, which it anticipates expensing in fiscal 2026. Guidance does not include the impact of any future share repurchases.

Conference Call Information

UniFirst Corporation will hold a conference call today at 9:00 a.m. (ET) to discuss its quarterly financial results, business highlights and outlook. A simultaneous live webcast of the call will be available over the Internet and can be accessed at www.unifirst.com.

About UniFirst Corporation

Headquartered in Wilmington, Mass., UniFirst Corporation (NYSE: UNF) is a North American leader in the supply and servicing of uniform and workwear programs, facility service products, as well as first aid and safety supplies and services. Together with its subsidiaries, the Company also manages specialized garment programs for the cleanroom and nuclear industries. In addition to partnering with leading brands, UniFirst manufactures its own branded workwear, protective clothing, and floorcare products at its five company-owned ISO-9001-certified manufacturing facilities. With more than 270 service locations, over 300,000 customer locations, and 16,000-plus employee Team Partners, the Company outfits more than 2 million workers every day. For more information, contact UniFirst at 888.296.2740 or visit UniFirst.com.

Forward-Looking Statements Disclosure

This public announcement contains forward-looking statements within the meaning of the federal securities laws that reflect the Company's current views with respect to future events and financial performance, including projected revenues, operating margin and earnings per share. Forward-looking statements contained in this public announcement are subject to the safe harbor created by the Private Securities Litigation Reform Act of 1995 and may be identified by words such as “guidance,” “outlook,” “estimates,” “anticipates,” “projects,” “plans,” “expects,” “intends,” “believes,” “seeks,” “could,” “should,” “may,” “will,” “strategy,” “objective,” “assume,” “strive,” “design,” “assumption,” “vision,” “approximate,” or the negative versions thereof, and similar expressions and by the context in which they are used. Such forward-looking statements are based upon our current expectations and speak only as of the date made. Such statements are highly dependent upon a variety of risks, uncertainties and other important factors that could cause actual results to differ materially from those reflected in such forward-looking statements.

Such factors include, but are not limited to, uncertainties caused by an economic recession or other adverse economic conditions, including, without limitation, as a result of elevated inflation or interest rates or extraordinary events or circumstances such as geopolitical conflicts like the conflict between Russia and Ukraine and disruption in the Middle East and their impact on our customers' businesses and workforce levels, disruptions of our business and operations, including limitations on, or closures of, our facilities, or the business and operations of our customers or suppliers in connection with extraordinary events or circumstances, uncertainties regarding our ability to consummate acquisitions and successfully integrate acquired businesses and the performance of such businesses, uncertainties regarding any existing or newly-discovered expenses and liabilities related to environmental compliance and remediation, any adverse outcome of pending or future contingencies or claims, our ability to compete successfully without any significant degradation in our margin rates, seasonal and quarterly fluctuations in business levels, our ability to preserve positive labor relationships and avoid becoming the target of corporate labor unionization campaigns that could disrupt our business, the effect of currency fluctuations on our results of operations and financial condition, our dependence on third parties to supply us with raw materials, which such supply could be severely disrupted as a result of extraordinary events or circumstances such as the conflict between Russia and Ukraine, any loss of key management or other personnel, increased costs as a result of any changes in federal, state, international or other laws, rules and regulations or governmental interpretation of such laws, rules and regulations, uncertainties regarding, or adverse impacts from continued high price levels of natural gas, electricity, fuel and labor or increases in such costs, the negative effect on our business from sharply depressed oil and natural gas prices, the continuing increase in domestic healthcare costs, increased workers' compensation claim costs, increased healthcare claim costs, our ability to retain and grow our customer base, demand and prices for our products and services, fluctuations in our nuclear business, political or other instability, supply chain disruption or infection among our employees in Mexico and Nicaragua where our principal garment manufacturing plants are located, our ability to properly and efficiently design, construct, implement and operate a new enterprise resource planning computer system, interruptions or failures of our information technology systems, including as a result of cyber-attacks, additional professional and internal costs necessary for compliance with any changes in or additional Securities and Exchange Commission (the “SEC”), New York Stock Exchange and accounting or other rules, strikes and unemployment levels, our efforts to evaluate and potentially reduce internal costs, the impact of U.S. and foreign trade policies and tariffs or other impositions on imported goods on our business, results of operations and financial condition, our ability to successfully implement our business strategies and processes, including our capital allocation strategies, our ability to successfully remediate the material weakness in internal control over financial reporting disclosed in our Annual Report on Form 10-K for the year ended August 30, 2025 and the other factors described under Part I, Item 1A. “Risk Factors” and elsewhere in our Annual Report on Form 10-K for the year ended August 30, 2025, Part II, Item 1A. “Risk Factors” and elsewhere in our subsequent Quarterly Reports on Form 10-Q and in our other filings with the SEC. We undertake no obligation to update any forward-looking statements to reflect events or circumstances arising after the date on which they are made.

Consolidated Statements of Income

(Unaudited)

Condensed Consolidated Balance Sheets

(Unaudited)

Detail of Operating Results

(Unaudited)

Consolidated Statements of Cash Flows

(Unaudited)

Reconciliation of GAAP to Non-GAAP Financial Measures

The Company reports its consolidated financial results in accordance with generally accepted accounting principles (“GAAP”). To supplement the Company’s consolidated financial results in this press release, the Company also presents Adjusted EBITDA and Adjusted EBITDA margin, which are non-GAAP financial measures. The Company defines Adjusted EBITDA as net income before interest, income taxes, depreciation and amortization, further adjusted for share-based compensation expense and other items impacting the comparability of the Company’s underlying operating performance between periods. Adjusted EBITDA margin is defined as Adjusted EBITDA for a period divided by revenue for the same period.

The Company believes these non-GAAP financial measures provide useful supplemental information regarding the performance of the Company and its segments to both management and investors. In addition, by excluding certain items, these non-GAAP financial measures enable management and investors to further evaluate the underlying operating performance of the Company.

Supplemental reconciliations of the Company’s consolidated net income on a GAAP basis to Adjusted EBITDA and Adjusted EBITDA margin are presented in the following table. Investors are encouraged to review the reconciliations of the non-GAAP financial measures to their most directly comparable GAAP financial measures, which are provided below. Adjusted EBITDA and Adjusted EBITDA margin should be considered in addition to, and not as substitutes for, or in isolation from, measures prepared in accordance with GAAP.

The Company does not allocate its provision for income taxes to its business segments and as a result, presents it in a separate column in the following tables.