Rodolphe Vallee and Patrick Tierney will retire from MSCI Inc.'s board, effective May 10 and May 1, respectively.
Vallee has served as a director since 2008 and lead director since 2010. Tierney has been a director since 2010.
The company's independent directors have elected Robert Ashe as lead director, effective April 30. He has been a director since 2013.
MSCI is a provider of indexes and portfolio construction and risk management tools and services for investors.