Company:  GENTEX CORP (GNTX)
Form Type:  5
Filing Date:  1/31/2012 
CIK:  0000355811 
Address:  600 N CENTENNIAL ST 
City, State, Zip:  ZEELAND, Michigan 49464 
Telephone:  (616) 772-1800 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$35.56  
Change: 
0.60 (1.72%)  
Trade Time: 
Nov 28  
Market Cap: 
$5.21B
Description of Business
Gentex Corporation (the Company) designs and manufactures automatic-dimming rearview mirrors and electronics for the automotive industry, dimmable aircraft windows for the aviation industry, and commercial smoke alarms and signaling devices for the fire protection industry. The Company�s largest business segment involves designing, developing, manufacturing and marketing interior and exterior auto-dimming automotive rearview mirrors that utilize proprietary electrochromic technology to dim in proportion to the amount of headlight glare from trailing vehicle headlamps. The Company ships its product to all of the major automotive producing regions worldwide, which it supports with numerous sales, engineering and distribution locations worldwide. The Company was organized as a Michigan corporation in 1974 to manufacture smoke detectors, a product line has since evolved to include include a variety of fire protection products.
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  FORM 5
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    REPORTING OWNERS
    SIGNATURES