Mark W. Anderson, who owns the D.C. Improv comedy club, went missing from his home in Oklahoma City more than two weeks ago, according to a notice from his family. Anderson, 60, was last seen in San Diego on May 15, a day after his wife reported him missing following a two-day business trip

Anderson also owns the Improv franchise in Tempe, Ariz. That club’s newest competitor, the City Paper notes, might have been the source of some recent frustration for Anderson: In announcing its impending closure on June 1, the Tempe Improv blamed a Phoenix comedy club, Stand Up Live, with stealing the comedians it had booked consistently in its 23-year history.

In his career operating comedy clubs in D.C. and elsewhere, Anderson has intersected with high-profile comedians including Judd Apatow, Paula Poundstone and Kevin Nealon. “I’ve always been grateful for his friendship, sense of humor and admire his business savvy,” Nealon says in a press release from D.C. Improve. “My friend’s disappearance causes me great concern and I pray that he is found safe and is reunited with his family.”

Kim Thomas, Anderson’s sister-in-law and spokeswoman for the family, says Anderson left home on May 12 with plans to return on May 14. When he did not come home, his wife, Holly, reported him missing. Anderson did not have any known plans to visit San Diego, Thomas tells DCist. He “showed up at a friend’s” in the California city on May 15 but left the following morning without taking any of his belongings, Thomas says.

Thomas says Anderson suffered something akin to a mental breakdown 16 years ago, though she did not specify the details of that incident other than saying it was a “stress-induced episode.”

Anderson, who is 5-feet-9-inches tall and weighs about 180 pounds, has gray hair and wears glasses. “He’s nicer than most people you’d ever encounter,” Thomas says. “He’s just a very kind man. Does not drink or do drugs.”

The family has hired a private investigator and set up a hotline for any information on Anderson’s whereabouts. Anyone who has seen him is urged to call Thomas Martin at (800) 577-1080 or email helpmarkwanderson@gmail.com.