Kozlowski joined Tyco in 1975, becoming CEO in 1992. With Kozlowski at the helm, Tyco massively expanded during the late 1990s. The company consistently beat Wall Street's expectations and through a series of strategic mergers and acquisitions, ushered in a new era of mega-conglomerates. Kozlowski left Tyco in 2002, amid a controversy in regard to his compensation package.