Gentex Corporation (NASDAQ: GNTX) is an automotive components company that designs and manufactures automatic-dimming rearview mirrors and related electronics for vehicle applications. Revenue is generated through transactional unit sales of interior and exterior electrochromic automatic-dimming mirrors, HomeLink wireless vehicle-to-home communication systems, and ancillary mirror sub-assemblies sold directly to automotive OEMs. Gentex holds a concentrated position in the automatic-dimming mirror segment, supplying the global automotive industry from its Zeeland, Michigan headquarters. The company's product history stretches from smoke detectors at founding through the 1980s introduction of electromechanical and electrochromic interior rearview mirrors, exterior mirror systems in the 1990s, and the 2013 acquisition of HomeLink. Gentex also supplies electrochromic dimmable windows to the aviation industry, a product line begun in 2010. The core revenue driver is per-unit mirror sales tied to global vehicle production volumes, with HomeLink integration adding wireless connectivity functionality to the mirror platform.

Revenue model

Transactional per-unit sales of automatic-dimming mirrors and integrated electronics to automotive OEMs; additional revenue from electrochromic aircraft windows sold to aviation customers.

Products and services

Interior electrochromic automatic-dimming rearview mirrors; exterior electrochromic automatic-dimming rearview mirrors; mirror sub-assemblies including thin glass flat, convex, and aspheric variants; bezel-free exterior automatic-dimming mirrors (volume shipments began 2005); HomeLink wireless vehicle/home communications systems (acquired 2013, integrated since 2003); electrochromic dimmable aircraft windows (volume shipments began 2010); fire protection technologies descended from original smoke detector product line.

Customers and end markets

Primary end market is automotive OEMs purchasing mirror and HomeLink-integrated components for passenger vehicle production. Secondary end market is aviation, purchasing electrochromic dimmable windows. Filing excerpts do not disclose individual customer names or concentration percentages.

Value-chain role

Tier 1 automotive supplier; designs and manufactures finished mirror assemblies and integrated electronics delivered directly to vehicle OEM production lines.

Geographic exposure

Headquartered in Zeeland, Michigan. Filing excerpts do not specify revenue breakdown by geography.

Source: SEC 10-K, filed 2026-02-24

Industry: Motor Vehicle Parts & Accessories Peers: Borgwarner Inc Dorman Products Inc LCI Industries Fox Factory Holding Corp Luminar Technologies, Inc./DE Quantumscape Corp Lear Corp Visteon Corp