Lichtenstein has a lower online profile than his wife; he described himself as a “tech entrepreneur, explorer, and occasional magician” in a 2018 blog post. According to court documents, the dual Russian and American citizen grew up in Glenview, Ill., a suburb of Chicago. He studied at the University of Wisconsin-Madison and co-founded MixRank, a sales firm initially funded by Y Combinator and investors including Mark Cuban, according to the company’s website.