What is Guy Oseary's net worth? Guy Oseary's net worth is $60 million dollars. Born in Jerusalem, Israel, Guy Oseary grew up in Los Angeles. He always knew that he wanted to be involved in the music business, and began looking for talented musicians and developing them while he was still in high school. This ambition led to work as an A&R executive at a label that would eventually become Maverick Records. He subsequently became Maverick's CEO, and is credited with making the company one of the most successful entertainment management groups in the world. He discovered and signed such artists as Alanis Morrisette, Paul Oakenfold, Prodigy, and Michelle Branch. He produced the soundtracks to such films as "The Wedding Singer", "The Matrix", and both "Austin Powers" films. He is part owner of Untitled Entertainment, the management company that manages such actors as Lucy Liu, Marisa Tomei, Naomi Watts, and David Caruso. He is the manager and business partner of Madonna, and executive produced the "Twilight" films. He has also published four books.