On August 2, 2019, Charles River Laboratories International, Inc. announced that David P. Johst, Corporate Executive Vice President, General Counsel and Chief Administrative Officer, will retire from company in May 2020. Mr. Johst joined Charles River in 1991 as Corporate Counsel. He became Vice President, Human Resources and Administration in 1996, a Senior Vice President in 1999, and a Corporate Executive Vice President in 2005.