William End plans to retire as a class I director of IDEXX Laboratories Inc. after the expiration of his term at the company's 2018 annual meeting of stockholders on May 9.

IDEXX's board has decided to reduce the board size to eight directors and lower class I directors to two, effective upon End's retirement.

End has been a board member since 2000. IDEXX said his decision to retire from the board was not the result of any disagreement with the company on any matter relating to the company's operations, policies or practices.