Vice president. and secretary United Cigar Manufacturers Company (now General Cigar Company), 1907-1913. Member of New York State Industrial Board, 1913-1915. Entered investment banking with Hallgarten & Company, 1915-1919, member firm, 1919-1926.
Founder Werthiem & Company, investment bankers, 1927, and since senior partner. Director Underwood Corporation, Cuban Atlantic Sugar Company, Hat. Corporation of America, Bond Stores Company President American Jewish Committee, 1941-1942.
Served in Washington with War Production Board (member requirements committee), 1941-1943, later with War Department One of the founders and former director, Theatre Guild of New York. Publisher, The Nation, 1935-1937. President Manhattan Chess Club.
Honorary trustee, Federal of Jewish Philanthropies of New York. Trustee, Mount Sinai Hospital. Trustee American Wildlife Foundation.
Member advising committee New York University Institute of Fine Arts, member commission to visit department of fine arts, Harvard. Home: 33 E. 70th St. Office: 120 Broadway, New York City.