展品99.3

01Z8TC Fold Fold 對此通知有疑問嗎?撥打下面的免費電話或掃描二維碼以瞭解更多 免費1-866-964-0492GFL環境公司代理材料可用性www.computershare.com/ noticeandaccess Notice。年度股東大會 會議日期和地點: 時間:2024年5月15日地點:在線時間:https://web.lumiagm.com/404558653, 上午10:00(東部時間)密碼:gfl2024您收到此通知,通知您上述證券持有人會議的代理材料可在互聯網上獲得。本通訊僅概述了您可以在互聯網上獲得的更完整的代理材料。我們提醒您在投票前查閲信息通告和其他代理材料中包含的所有重要信息。 信息通告和其他相關材料可從at: http://investors.gflenv.com OR www.sedarplus.ca GFL Environmental Inc.獲得。 如何獲得代理材料的紙質副本 安全持有人可以要求通過郵寄免費接收當前會議材料的紙質副本。索取紙質副本的請求 可使用隨附的投票指示表格或委託書上顯示的控制編號進行。為確保您在投票截止日期和會議日期之前收到材料,所有申請必須在2024年5月1日之前收到。如果您確實要求提供當前材料,請注意,將不會發送另一份投票指示表格/委託書;請保留您當前的表格用於投票。 有關通知和訪問的更多信息,請聯繫我們的轉讓代理ComputerShare Investor 服務公司,電話:1-866-964-0492。股東可以要求收到自材料在www.sedarplus.ca上歸檔之日起至一年內的會議材料的紙質副本。對於具有15位控制號碼的持有者: 通過以下方式請求材料: 致電北美境內的Toll Free-1-866-962-0498或直接從北美以外的 北美-(514)982-8716並輸入您的投票指示 表格或代理上指示的 控制號碼。 對於具有16位數字控制號碼的持有者: 通過致電Toll Free請求材料,在北美境內-1-877-907-7643或直接從北美以外的地區-(303)562-9305並輸入您的投票指示表格上顯示的控制號碼。 要在會議日期後獲得材料的紙質副本,請致電 (905)326-0101分機聯繫GFL Environmental Inc.。60865或發送電子郵件至ir@gflenv.com。

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01Z8UA Fold Fold Securityholder Meeting Notice The resolutions to be voted on at the meeting are listed below along with the Sections within the Information Circular where disclosure regarding the matter can be found. 1. Election of Directors - Shareholders will be asked to elect directors for the ensuing year. Information respecting the election of directors may be found in the Information Circular under “Proposal 1 - Election of Directors”. 2. Appointment of Auditor - Shareholders will be asked to appoint KPMG LLP as auditor of GFL Environmental Inc., to hold office until the next annual meeting of the shareholders, at such remuneration to be determined by the board of directors. Information respecting the appointment of auditor may be found in the Information Circular under “Proposal 2 - Appointment of Independent Auditor”. 3. Consideration of Company Approach to Executive Compensation - Shareholders will be asked to consider an advisory non-binding resolution on GFL Environmental Inc.’s approach to executive compensation. Information may be found in the Information Circular under “Proposal 3 - Advisory Vote on Executive Compensation”. Annual Financial statement delivery • No Annual Report (or Annual Financial Statements) is (are) included in this mailing Voting PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your securities you must vote using the methods reflected on your enclosed Voting Instruction Form or Proxy. Your Proxy or Voting Instruction Form must be received by May 13, 2024 at 10:00 a.m. (Eastern Time). PLEASE VIEW THE INFORMATION CIRCULAR PRIOR TO VOTING