UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
(Amendment No.      )
 
Filed by the Registrant   ☒                               Filed by a Party other than the Registrant   ☐
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☐	Preliminary Proxy Statement	
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))	
☐	Definitive Proxy Statement	
☒	Definitive Additional Materials	
☐	Soliciting Material Pursuant to § 240.14a-12	
TOCAGEN 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 Regarding the Availability of Proxy Materials for the Stockholder Meeting to be held on June 21, 2018 for Tocagen Inc. This communication is not a form for voting and presents only an overview of the more complete proxy materials which contain important information and 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. To view the proxy statement and annual report, go to www.proxydocs.com/TOCA. To submit your proxy while visiting this site, you will need the 12 digit control number in the box below. Under new United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. We have chosen to use these procedures for our 2018 Annual Meeting and need YOUR participation. 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. In order to receive a paper package in time for this year’s annual meeting, please make this request on or before June 11, 2018. Printed materials may be requested by one of the following methods: INTERNET www.investorelections.com/toca You must use the 12 digit control number located in the shaded gray box below. TELEPHONE (866) 648-8133 *E-MAIL paper@investorelections.com * If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material. ACCOUNT NO. SHARES The purpose of the Annual Meeting is to take action on the following proposals: The Board of Directors recommends that you vote “FOR” the following. 2. To ratify the selection by the Audit Committee of the Board of Directors of Ernst & Young LLP as the independent registered public accounting firm of the Company for the fiscal year ending December 31, 2018. Note: To conduct any other business properly brought before the meeting. 1. Election of Directors Nominees 01 Thomas E. Darcy 02 Harry E. Gruber, M.D. 03 Paul Schimmel, Ph.D. Date: Thursday, June 21, 2018 Time: 10:00 A.M. (Local Time) Place: Cooley LLP, 4401 Eastgate Mall, San Diego, CA 92121 Company Notice of Annual Meeting Proxy Materials Available to View or Receive: 1. Proxy Statement 2. Annual Report For a Convenient Way to View Proxy Materials _ and _ VOTE Online go to: www.proxydocs.com/TOCA
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