The title says it all. Reports are that Mike Klein, who I hired as CEO of ONElist and who later oversaw the acquisition of (the renamed) eGroups to Yahoo, is missing after a plane crash on Sunday in Panama. Mike owns a resort off the coast of Panama, and the reports say he was flying with his daughter, a friend, and the pilot. Their destination was the Chiriqui volcano, but they never made it. Searchers have been hampered by bad weather. Mike currently runs Pacificor, a hedge fund in Santa Barbara. They just issued a press release. Another report with more details is here. This is terrible news. I will post when more is known. Update: Report from CNN with a little more information. Update: Unfortunately, the crash site was found Christmas day, and Mike, his daughter, and the pilot did not survive the crash. Mike was one of the smartest people I knew and this is a great loss.