Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No. )

Signature of Stockholder Date: Signature of Stockholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark “FOR ALL EXCEPT” and fill in the circle next to each nominee you wish to withhold, as shown here: JOHN SMITH 1234 MAIN STREET APT. 203 NEW YORK, NY 10038 PROXY VOTING INSTRUCTIONS Please detach along perforated line and mail in the envelope provided IF you are not voting via telephone or the Internet. THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE ELECTION OF EACH OF THE DIRECTOR NOMINEES SET FORTH BELOW AND “FOR” PROPOSAL 2, PROPOSAL 3 AND PROPOSAL 4. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x 20830303000000000000 2 030524 COMPANY NUMBER ACCOUNT NUMBER NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, proxy statement and proxy card are available at - http://www.astproxyportal.com/ast/22221 ANNUAL MEETING OF STOCKHOLDERS OF BRIGHTVIEW HOLDINGS, INC. Tuesday, March 5, 2024 at 11:00 AM Eastern Time 1. Election of Directors: O James R. Abrahamson O Dale A. Asplund O Jane Okun Bomba O William Cornog O Frank Lopez O Paul E. Raether O Richard W. Roedel O Mara Swan FOR ALL NOMINEES WITHHOLD AUTHORITY FOR ALL NOMINEES FOR ALL EXCEPT (See instructions below) NOMINEES: 2. To ratify the appointment of Deloitte & Touche LLP as BrightView Holdings, Inc.’s independent registered public accounting firm for Fiscal 2024. 3. To approve the amendment to the BrightView Holdings, Inc. Amended and Restated 2018 Omnibus Incentive Plan. 4. To approve the amendment to the BrightView Holdings, Inc. 2018 Employee Stock Purchase Plan. NOTE: To transact such other business as may properly come before the meeting or any adjournments or postponements of the Annual Meeting FOR AGAINST ABSTAIN INTERNET - Access “www.voteproxy.com” and follow the on-screen instructions or scan the QR code with your smartphone. Have your proxy card available when you access the web page. TELEPHONE - Call toll-free 1-800-PROXIES (1-800-776-9437) in the United States or 1-718-921-8500 from foreign countries from any touch-tone telephone and follow the instructions. Have your proxy card available when you call. Vote online/phone until 11:59 PM EST the day before the meeting. MAIL - Sign, date and mail your proxy card in the envelope provided as soon as possible. IN PERSON - You may vote your shares in person by attending the Annual Meeting online. GO GREEN - e-Consent makes it easy to go paperless. With e-Consent, you can quickly access your proxy material, statements and other eligible documents online, while reducing costs, clutter and paper waste. Enroll today via www.astfinancial.com to enjoy online access.

1. Election of Directors: James R. Abrahamson Dale A. Asplund Jane Okun Bomba William Cornog Frank Lopez Paul E. Raether Richard W. Roedel Mara Swan 2. To ratify the appointment of Deloitte & Touche LLP as BrightView Holdings, Inc.’s inde-pendent registered public accounting firm for Fiscal 2024. 3. To approve the amendment to the BrightView Holdings, Inc. Amended and Restated 2018 Omnibus Incentive Plan. 4. To approve the amendment to the BrightView Holdings, Inc. 2018 Employee Stock Purchase Plan. NOTE: To transact such other business as may properly come before the meeting or any adjournments or postponements of the Annual Meeting THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE ELECTION OF EACH OF THE DIRECTOR NOMINEES AND “FOR” PROPOSAL 2, PROPOSAL 3 AND PROPOSAL 4. NOMINEES: This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. If you want to receive a paper or e-mail copy of the proxy materials you must request one. There is no charge to you for requesting a copy. To facilitate timely delivery please make the request as instructed below before 02/19/24. You will be able to request a list of stockholders of record during the Annual Meeting. Please visit http://www.astproxyportal.com/ast/22221, where the following materials are available for view: • Notice of Annual Meeting of Stockholders • Proxy Statement • Form of Electronic Proxy Card • Annual Report on Form 10-K TO REQUEST MATERIAL: TELEPHONE: 888-Proxy-NA (888-776-9962) 718-921-8562 (for international callers) E-MAIL: info@astfinancial.com WEBSITE: https://us.astfinancial.com/OnlineProxyVoting/ProxyVoting/RequestMaterials TO VOTE: ONLINE: To access your online proxy card, please visit www.voteproxy.com and follow the on-screen instructions or scan the QR code with your smartphone. You may enter your voting instructions at www.voteproxy.com up until 11:59 PM Eastern Time the day before the cut-off or meeting date. IN PERSON: You may vote your shares in person by attending the Annual Meeting online. TELEPHONE: To vote by telephone, please visit www.voteproxy.com to view the materials and to obtain the toll free number to call. MAIL: You may request a card by following the instructions above. COMPANY NUMBER ACCOUNT NUMBER CONTROL NUMBER JOHN SMITH 1234 MAIN STREET APT. 203 NEW YORK, NY 10038 Please note that you cannot use this notice to vote by mail. Important Notice of Availability of Proxy Materials for the Stockholder Meeting of BRIGHTVIEW HOLDINGS, INC. To Be Held On: Tuesday, March 5, 2024 at 11:00 AM Eastern Time at https://web.lumiagm.com/298109712, password: brightview2024

Signature of Stockholder Date: Signature of Stockholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark “FOR ALL EXCEPT” and fill in the circle next to each nominee you wish to withhold, as shown here: JOHN SMITH 1234 MAIN STREET APT. 203 NEW YORK, NY 10038 PROXY VOTING INSTRUCTIONS Please detach along perforated line and mail in the envelope provided IF you are not voting via telephone or the Internet. THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE ELECTION OF EACH OF THE DIRECTOR NOMINEES SET FORTH BELOW AND “FOR” PROPOSAL 2, PROPOSAL 3 AND PROPOSAL 4. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x 21030303000000000000 8 030524 COMPANY NUMBER ACCOUNT NUMBER NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, proxy statement and proxy card are available at - http://www.astproxyportal.com/ast/22221 ANNUAL MEETING OF STOCKHOLDERS OF BRIGHTVIEW HOLDINGS, INC. Tuesday, March 5, 2024 at 11:00 AM Eastern Time 1. Election of Directors: O James R. Abrahamson O Dale A. Asplund O Jane Okun Bomba O William Cornog O Frank Lopez O Paul E. Raether O Richard W. Roedel O Mara Swan O Kurtis Barker O Joshua Goldman FOR ALL NOMINEES WITHHOLD AUTHORITY FOR ALL NOMINEES FOR ALL EXCEPT (See instructions below) NOMINEES: 2. To ratify the appointment of Deloitte & Touche LLP as BrightView Holdings, Inc.’s independent registered public accounting firm for Fiscal 2024. 3. To approve the amendment to the BrightView Holdings, Inc. Amended and Restated 2018 Omnibus Incentive Plan. 4. To approve the amendment to the BrightView Holdings, Inc. 2018 Employee Stock Purchase Plan. NOTE: To transact such other business as may properly come before the meeting or any adjournments or postponements of the Annual Meeting FOR AGAINST ABSTAIN INTERNET - Access “www.voteproxy.com” and follow the on-screen instructions or scan the QR code with your smartphone. Have your proxy card available when you access the web page. TELEPHONE - Call toll-free 1-800-PROXIES (1-800-776-9437) in the United States or 1-718-921-8500 from foreign countries from any touch-tone telephone and follow the instructions. Have your proxy card available when you call. Vote online/phone until 11:59 PM EST the day before the meeting. MAIL - Sign, date and mail your proxy card in the envelope provided as soon as possible. IN PERSON - You may vote your shares in person by attending the Annual Meeting online. GO GREEN - e-Consent makes it easy to go paperless. With e-Consent, you can quickly access your proxy material, statements and other eligible documents online, while reducing costs, clutter and paper waste. Enroll today via www.astfinancial.com to enjoy online access.

1. Election of Directors: James R. Abrahamson Dale A. Asplund Jane Okun Bomba William Cornog Frank Lopez Paul E. Raether Richard W. Roedel Mara Swan Kurtis Barker Joshua Goldman 2. To ratify the appointment of Deloitte & Touche LLP as BrightView Holdings, Inc.’s inde-pendent registered public accounting firm for Fiscal 2024. 3. To approve the amendment to the BrightView Holdings, Inc. Amended and Restated 2018 Omnibus Incentive Plan. 4. To approve the amendment to the BrightView Holdings, Inc. 2018 Employee Stock Purchase Plan. NOTE: To transact such other business as may properly come before the meeting or any adjournments or postponements of the Annual Meeting THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE ELECTION OF EACH OF THE DIRECTOR NOMINEES AND “FOR” PROPOSAL 2, PROPOSAL 3 AND PROPOSAL 4. NOMINEES: This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. If you want to receive a paper or e-mail copy of the proxy materials you must request one. There is no charge to you for requesting a copy. To facilitate timely delivery please make the request as instructed below before 02/19/24. You will be able to request a list of stockholders of record during the Annual Meeting. Please visit http://www.astproxyportal.com/ast/22221, where the following materials are available for view: • Notice of Annual Meeting of Stockholders • Proxy Statement • Form of Electronic Proxy Card • Annual Report on Form 10-K TO REQUEST MATERIAL: TELEPHONE: 888-Proxy-NA (888-776-9962) 718-921-8562 (for international callers) E-MAIL: info@astfinancial.com WEBSITE: https://us.astfinancial.com/OnlineProxyVoting/ProxyVoting/RequestMaterials TO VOTE: ONLINE: To access your online proxy card, please visit www.voteproxy.com and follow the on-screen instructions or scan the QR code with your smartphone. You may enter your voting instructions at www.voteproxy.com up until 11:59 PM Eastern Time the day before the cut-off or meeting date. IN PERSON: You may vote your shares in person by attending the Annual Meeting online. TELEPHONE: To vote by telephone, please visit www.voteproxy.com to view the materials and to obtain the toll free number to call. MAIL: You may request a card by following the instructions above. COMPANY NUMBER ACCOUNT NUMBER CONTROL NUMBER JOHN SMITH 1234 MAIN STREET APT. 203 NEW YORK, NY 10038 Please note that you cannot use this notice to vote by mail. Important Notice of Availability of Proxy Materials for the Stockholder Meeting of BRIGHTVIEW HOLDINGS, INC. To Be Held On: Tuesday, March 5, 2024 at 11:00 AM Eastern Time at https://web.lumiagm.com/298109712, password: brightview2024

¨	Preliminary Proxy Statement

¨	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨	Definitive Proxy Statement

x	Definitive Additional Materials

¨	Soliciting Material Pursuant to §240.14a-12


x	No fee required.

¨	Fee paid previously with preliminary materials.

¨	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.