UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant Filed by a Party other than the Registrant Check the appropriate box: 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 Section 240.14a-12 Gentex Corporation (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): No fee required Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. (1) Title of each class of securities to which transaction applies: (2) Aggregate number of securities to which transaction applies: (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): (4) Proposed maximum aggregate value of transaction: (5) Total fee paid: Fee paid previously with preliminary materials. Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. (1) Amount Previously Paid: (2) Form, Schedule or Registration Statement No.: (3) Filing Party: (4) Date Filed:

See the reverse side of this notice to obtain proxy materials and voting instructions. E42846-P0183 1 You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. GENTEX CORPORATION *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 17, 2018. GENTEX CORPORATION 600 N. CENTENNIAL ST. ZEELAND, MI 49464 ATTN: SCOTT RYAN Meeting Information Meeting Type: Annual Meeting For holders as of: March 19, 2018 Date: May 17, 2018 Time: 4:30 PM EDT Location: The Pinnacle Center 3330 Highland Drive Hudsonville, MI 49426

E42847-P0183 1 Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance as well as for directions to be able to attend the meeting. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 3, 2018 to facilitate timely delivery. How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. You will have the opportunity to make a request to receive paper or e-mail copies for all future meetings or only for the 2018 Annual Meeting of Shareholders. NOTICE AND PROXY STATEMENT ANNUAL REPORT PROXY CARD Proxy Materials Available to VIEW or RECEIVE: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX Before You Vote How to Access the Proxy Materials How To Vote Please Choose One of the Following Voting Methods XXXX XXXX XXXX XXXX

Voting Items 3. To approve, on an advisory basis, compensation of the Company's named executive officers. 2. To ratify the appointment of Ernst & Young LLP as the Company's auditors for the fiscal year ending December 31, 2018. 1. Election of Directors Nominees: The Board of Directors recommends you vote FOR the following: 01) Leslie Brown 02) Gary Goode 03) James Hollars 04) John Mulder 05) Richard Schaum 06) Frederick Sotok 07) James Wallace The Board of Directors recommends you vote FOR proposals 2 and 3. NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof. E42848-P0183 1

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