<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D. C.  20549

                                 FORM 10-Q/A

                               AMENDMENT NO. 1

(MARK ONE)
[ X ]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1995,
OR
[   ]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _________ TO _________


COMMISSION FILE NO. 0-10235

                               GENTEX CORPORATION
             (Exact name of registrant as specified in its charter)

           MICHIGAN                                     38-2030505
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
incorporation or organization)

     600 N. CENTENNIAL, ZEELAND, MICHIGAN                          49464
   (Address of principal executive offices)                      (Zip Code)

                                 (616) 772-1800
              (Registrant's telephone number, including area code)

     ___________________________________________________________________
             (Former name, former address and former fiscal year,
                        if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

          Yes        x              No
                 ---------               ----------

APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE
PRECEDING FIVE YEARS:

Indicate by check mark whether the registrant has filed all documents and
reports required to be filed by Sections 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan
confirmed by a court.  

          Yes                       No
                 ---------               ----------

APPLICABLE ONLY TO CORPORATE USERS:

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.


<TABLE>
<CAPTION>
                                                                            Shares Outstanding
                                Class                                        at July 13, 1995
                                -----                                        ----------------
                 <S>                                                         <C>
                    Common Stock, $0.06 Par Value                               16,733,173
</TABLE>







<PAGE>   2
The sole purpose of this Amendment is to properly identify the Financial Data
Schedule for the three month period ended June 30, 1995 as Exhibit 27 (Document
type Ex-27).



                                   SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.





                                      GENTEX CORPORATION


        
Date    9/21/95                 /s/ FRED T. BAUER
     -------------              ------------------------------
                                Fred T. Bauer
                                Chairman and Chief
                                Executive Officer




Date    9/21/95                 /s/ ENOCH C. JEN
     -------------              ------------------------------
                                Enoch C. Jen
                                Vice President-Finance,
                                Principal Financial and
                                Accounting Officer










<TABLE> <S> <C>

<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-END>                               JUN-30-1995
<CASH>                                      16,298,689
<SECURITIES>                                15,683,471
<RECEIVABLES>                               12,616,141
<ALLOWANCES>                                 (432,803)
<INVENTORY>                                  5,325,198
<CURRENT-ASSETS>                            50,225,821
<PP&E>                                      28,737,598
<DEPRECIATION>                            (10,833,807)
<TOTAL-ASSETS>                              94,298,556
<CURRENT-LIABILITIES>                       10,753,135
<BONDS>                                              0
<COMMON>                                     1,003,990        
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                  81,612,870
<TOTAL-LIABILITY-AND-EQUITY>                94,298,556
<SALES>                                     26,020,719
<TOTAL-REVENUES>                            26,020,719
<CGS>                                       15,947,030
<TOTAL-COSTS>                               20,822,268
<OTHER-EXPENSES>                             (676,985)
<LOSS-PROVISION>                                18,500
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                              5,975,436
<INCOME-TAX>                                 1,879,000
<INCOME-CONTINUING>                          3,996,436
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 3,996,436
<EPS-PRIMARY>                                     0.23
<EPS-DILUTED>                                     0.23
        

</TABLE>