His father is Lee P. Klingenstein, a philanthropist and partner in the New York investment management firm of Neuberger Berman.
[1] He was a corporate and securities attorney with the firm of McCutcheon, Doyle, Brown & Enerson.
[1] In 1996, after twelve years in the corporate world, Klingenstein produced his first film: the documentary The Church of Saint Coltrane with Jeff Swimmer.
[7] In 2010, Klingenstein joined with brothers Danny and Jack Fisher to create FilmRise, a film acquisition fund and distribution company established to acquire and distribute a slate of both mainstream and specialized films, documentaries, and television series.
It depicts how Bradford (Buddy) Clayman, a middle-aged man who suffered an obsessive-compulsive disorder for over 20 years, was finally able to enter a path of recovery.