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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☐	 	Preliminary Proxy Statement	 		  		
		
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☐	 	Definitive Proxy Statement	 		  		
				
☒	 	Definitive Additional Materials	 		  		
				
☐	 	Soliciting Material Pursuant to (S) 240.14a-11(c) or (S) 240.14a-12	 		  		
BGC 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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Your Vote Counts! BGC PARTNERS, INC. 2021 Annual Meeting Vote by November 21, 2021 11:59 PM ET. For shares held in a Plan, vote by November 17, 2021 11:59 PM ET. bgc BGC PARTNERS, INC. 499 PARK AVENUE, 3RD FLOOR NEW YORK, NY 10022 D61509-P62841 You invested in BGC PARTNERS, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on November 22, 2021. Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to November 8, 2021. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. PV For complete information and to vote, visit www.ProxyVote.com Control# Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* November 22, 2021 3:00 PM EST Virtually at: www.virtualshareholdermeeting.com/BGCP2021 *Please check the meeting materials for any special requirements for meeting attendance. V1.1

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Voting Items Board Recommends 1. Election of Directors Nominees: 01) Howard W. Lutnick 02) Stephen T. Curwood 03) William J. Moran 04) Linda A. Bell 05) David P. Richards 06) Arthur U. Mbanefo For 2. Approval of the ratification of Ernst & Young LLP as the Company’s Independent Registered Public Accounting Firm for fiscal year 2021. For 3. Approval, on an advisory basis, of executive compensation. For 4. Approval of the Eighth Amended and Restated BGC Partners, Inc. Long Term Incentive Plan. For NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up for E-delivery”. D61510-P62841