Ron Klain, chief of staff for Vice President Joe Biden, will be leaving his post at the end of January, the vice president's office said Tuesday.
"For 25 years, Ron Klain has been my friend and adviser," Biden said in a statement.
"As my chief of staff in the White House, Ron has done an exceptional job of building my team, implementing my direction on top priorities and providing invaluable counsel. … I am proud of the successes we have had over these two years and am grateful for the role Ron played in achieving them. I wish him the best of luck as he takes this next step in his career."
Klain will become president of Case Holdings, the parent of the company named after his one-time boss and former AOL leader Steve Case, The Washington Post reported.
Biden is discussing the chief of staff job with several people but didn't name names, the Post said.