UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

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

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Filed by a Party other than the Registrant  o
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o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material under §240.14a-12
Focus Financial Partners Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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Important Notice of Availability of Proxy Materials for the Annual Meeting of Stockholders FOCUS FINANCIAL PARTNERS INC. To Be Held On: May 28, 2019 at 9:00 a.m. Eastern Time at the Melville Marriott Long Island, 1350 Walt Whitman Road, Melville, New York 11747 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 5/14/2019. Please visit http://www.astproxyportal.com/ast/22304/, where the following materials are available for view: • Notice of Annual Meeting of Stockholders • Proxy Statement • Form of Electronic Proxy Card • Annual Report 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 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. 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. TO VOTE: 1. Election of Directors: NOMINEES: Ruediger Adolf James D. Carey Christopher J. Harrington Please note that you cannot use this notice to vote by mail. 2. Ratification of the selection by the audit committee of the Board of Directors of Deloitte & Touche LLP to serve as Focus Financial Partners Inc.’s independent registered public accounting firm for the year ending December 31, 2019. In their discretion, the proxies are authorized to vote upon such other business as may properly come before the Annual Meeting. THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” EACH OF THE NOMINEES INPROPOSAL 1 AND “FOR” PROPOSAL 2. COMPANY NUMBER ACCOUNT NUMBER CONTROL NUMBER