Jack L. Warner Jack L. Warner Jack Leonard "J. L." Warner (August 2, 1892 – September 9, 1978), born Jacob Warner in London, Ontario, was a Jewish Canadian-American film executive who was the president and driving force behind the Warner Bros. Studios in Burbank, California. Warner's career spanned some 45 years, its duration surpassing that of any other of the seminal Hollywood studio moguls. As co-head of production at Warner Bros. Studios, he worked with his brother, Sam Warner, to procure the technology for the film industry's first talking picture. After Sam's death, Jack clashed with his surviving older brothers, Harry and Albert
Albert Warner Semenenko, Jack officially joined Semenenko's syndicate and bought back all his stock, which consisted of 200,000 shares. The deal officially completed in July. Now the company's largest stockholder, Jack appointed himself as the new company president. By the time Harry and Albert learned of their brother's subterfuge, it was too late. Albert read about Jack's dealings while spending time in New York City. He never spoke to Jack again, but he did later rejoin the company's board of directors to stop Jack "from stealing the stockholders blind". Albert Warner died of a stroke in 1967 in Miami Beach. A funeral