Mr. Patrick Dovigi reports

GFL ENVIRONMENTAL INC. ANNOUNCES PRICING OF SECONDARY OFFERING BY SELLING SHAREHOLDERS AND AGREEMENT TO REPURCHASE 1,275,000 SUBORDINATE VOTING SHARES IN SECONDARY OFFERING

GFL Environmental Inc. has provided the pricing of the previously announced secondary offering by BCEC-GFL Borrower (Cayman) LP (an entity affiliated with BC Partners Advisors L.P.), Ontario Teachers' Pension Plan Board, GFL Borrower II (Cayman) LP and entities affiliated with HPS Investment Partners LLC (collectively, the selling shareholders) of 16,611,295 subordinate voting shares at the public offering price of $45.15 (U.S.) per share. RBC Capital Markets LLC and RBC Dominion Securities Inc. will act as underwriters for the offering in the United States and Canada, respectively.

GFL also announced today that it has agreed to purchase for cancellation a total of 1,275,000 shares from RBC Dominion Securities under the offering. GFL's board of directors (interested directors having recused themselves) unanimously approved the secondary offering purchase upon the recommendation of a special committee composed solely of independent and disinterested directors formed to consider the secondary offering purchase. In arriving at its unanimous recommendation that the secondary offering purchase is in the best interests of the company, the special committee considered several factors, including among other things, the price at which the secondary offering purchase will be completed.

The shares issued pursuant to the offering will be offered in all provinces and territories of Canada by way of a prospectus supplement to the company's short-form base shelf prospectus. The company has filed a registration statement on Form F-10 and will file the prospectus supplement with the U.S. Securities and Exchange Commission (SEC) in accordance with the multijurisdictional disclosure system established between Canada and the United States.

The base shelf prospectus is accessible, and the prospectus supplement will be accessible on or about Nov. 24, 2025, through SEDAR+. Prospective investors should read the base shelf prospectus, the prospectus supplement, when available, and the documents incorporated by reference therein before investing in the shares. When available, these documents may be accessed free of charge on SEDAR+.

GFL has filed the Form F-10 registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the company has filed with the SEC for more complete information about the company and the offering. You may access these documents free of charge by visiting EDGAR on the SEC website.

Delivery of the base shelf prospectus and the prospectus supplement and any amendments thereto will be satisfied in accordance with the access equals delivery provisions of applicable Canadian securities legislation. An electronic or paper copy of the prospectus and prospectus supplement relating to the offering may be obtained, when available, upon request from RBC Capital Markets, attention: equity capital markets, 200 Vesey St., New York, N.Y., 10281, by telephone at 877-822-4089 or by e-mail at equityprospectus@rbccm.com, or RBC Dominion Securities Inc., 180 Wellington St. West, eighth floor, Toronto, Ont., M5J 0C2, attention: distribution centre, or by e-mail at Distribution.RBCDS@rbccm.com by providing RBC Capital Markets with an e-mail address or address, as applicable.

About GFL Environmental Inc.

GFL, headquartered in Vaughan, Ont., is the fourth-largest diversified environmental services company in North America, providing a comprehensive line of solid waste management services through its platform of facilities throughout Canada and in 18 U.S. states. Across its organization, GFL has a work force of approximately 15,000 employees.

We seek Safe Harbor.