GANT is a company driven by a simple idea: Never Stop Learning. It is a belief that has guided us since 1949 when Bernard Gantmacher founded a shirtmaking company in the college town of New Haven Connecticut.GANT is a company driven by a simple idea: Never Stop Learning. It is a belief that has guided us since 1949 when Bernard Gantmacher founded a shirtmaking company in the college town of New Haven Connecticut.