Tom Kartsotis is the founder of the brand development firm Bedrock Manufacturing Co., which is named for The Flintstones hometown and was founded in 2003. Kartsotis is the founder of Fossil Inc. in 1984 and served in roles including Director, President, Chief Executive Officer, Chairman from 1984 to January 2010. Kartsotis re-founded defunct shoe polish brand Shinola and re-positioned it as a wristwatch brand. In June 2016, the FTC ordered Shinola to stop using 'Where American is made' as a slogan because "100% of the cost of materials used to make certain watches is attributable to imported materials." Kartsotis responded with an open letter which noted that the regulations to claim "" for cars are not the same as for watches.
Kartsotis has also invested in American designer Steven Alan and outdoor goods brand Filson. Kartsotis has served on the Board of Directors of Burton Snowboards since 2004. Kartsotis shuns media attention and is rarely photographed.