Each of Giovanni Colella and James Currier, each a member of the Board of Directors of Castlight Health, Inc. notified Castlight of his decision to resign from the Board, effective as of October 25, 2017. Dr. Colella serves as Chairman of the Board and Mr. Currier serves on the Audit Committee. Each of Dr. Colella’s and Mr. Currier’s decision to resign, to the knowledge of Castlight’s executive officers, was not the result of any disagreement with Castlight on any matter relating to Castlight’s operations, policies or practices. In connection with Mr. Colella’s and Mr. Currier’s resignations, Dr. Roberts was appointed as Chairman of the Board and Michael Eberhard was appointed to serve on the Audit Committee of the Board, in each case effective as of October 25, 2017. On October 21, 2017, the Board appointed Seth Cohen as a member of the Board, effective as of January 1, 2018. Mr. Cohen will serve as a Class I director whose current term will expire at Castlight’s 2018 Annual Meeting of Stockholders when the Class I directors will next be elected by Castlight’s stockholders.