Washington, D.C. 20549


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB Number: 3235-0104
Estimated average burden
hours per response: 0.5
1. Name and Address of Reporting Person*
Chiodo Matthew

(Last) (First) (Middle)


(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
3. Issuer Name and Ticker or Trading Symbol
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Vice President of Sales
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 25,531 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) 02/15/2018(2) 02/15/2028 Common Stock 30,000 22.94(1) D
Employee Stock Option (Right to Buy) 03/31/2015(2) 03/31/2020 Common Stock 3,060 18.3(1) D
Employee Stock Option (Right to Buy) 03/31/2016(2) 03/31/2021 Common Stock 7,500 15.69(1) D
Employee Stock Option (Right to Buy) 03/28/2014(2) 03/28/2019 Common Stock 3,000 15.41(1) D
Explanation of Responses:
1. Options granted under the Gentex Corporation Employee Stock Option Plan which is a Rule 16B plan.
2. These shares become exercisable as to 25% one year after date of grant and an additional 25% at each ensuing anniversary date.
/s/ Robert L. Hughes for Matthew W Chiodo by Power of Attorney 02/20/2018
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

      Know all by these presents, that the undersigned hereby 
constitutes and appoints each of Kevin Nash, any successor Vice 
President of Accounting of Gentex Corporation (the "Corporation"), 
and Robert Hughes, any successor Director of Finance & Tax of the 
Corporation, and any of their respective designees, signing singly, 
the undersigned's true and lawful attorney-in-fact to: 

            (1)	execute for and on behalf of the undersigned, in the 
undersigned's capacity as an officer and/or director of the 
Corporation, Forms 3, 4, and 5 in accordance with Section 16(a) of 
the Securities Exchange Act of 1934 and the rules thereunder; 
            (2)	do and perform any and all acts for and on behalf of 
the undersigned that may be necessary or desirable to complete and 
execute any such Form 3, 4, or 5, complete and execute any amendment 
or amendments thereto, and timely file such form with the United 
States Securities and Exchange Commission and any stock exchange or 
similar authority; and 
            (3)	take any other action of any type whatsoever in 
connection with the foregoing that, in the opinion of such attorney-
in-fact, may be of benefit to, in the best interest of, or legally 
required by, the undersigned, it being understood that the documents 
 by such attorney-in-fact on behalf of the undersigned 
pursuant to this Power of Attorney shall be in such form and shall 
contain such terms and conditions as such attorney-in-fact may 
approve in such attorney-in-fact's discretion. 

      The undersigned hereby grants to each such attorney-in-fact full 
power and authority to do and perform any and every act and thing 
whatsoever requisite, necessary, or proper to be done in the exercise 
of any of the rights and powers herein granted, as fully to all 
intents and purposes as the undersigned might or could do if 
personally present, with full power of substitution or revocation, 
hereby ratifying and confirming all that such attorney-in-fact, or 
such attorney-in-fact's substitute or substitutes, shall lawfully do 
or cause to be done by virtue of this Power of Attorney and the 
rights and powers herein granted. 
      The undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the undersigned, 
are not assuming, nor is the Corporation assuming, any of the 
undersigned's responsibilities to comply with Section 16 or any other 
provision of the Securities Exchange Act of 1934.

      This Power of Attorney shall remain in full force and effect 
until the undersigned is no longer required to file Forms 3, 4, and 5 
with respect to the undersigned's holdings of and transactions in 
securities issued by the Corporation, unless earlier revoked by the 
undersigned in a signed writing delivered to the foregoing attorneys-

      IN WITNESS WHEREOF, the undersigned has caused this Power of 
Attorney to be executed as of this 15th day of February 15, 2018. 

	Signature:	/s/ Matthew Chiodo			
       Print Name:	Matthew Chiodo