Tami Reller has served as a director since May 2016 and Chair from May 2018 to May 2022. Ms. Reller has served as President of Duly Health and Care, a health care company, since May 2021. Ms. Reller has served as Executive Vice President and Chief Marketing and Experience Officer of UnitedHealthcare, the health benefits platform of UnitedHealth Group, since November 2017. From April 2017 to November 2017, Ms. Reller served as Chief Growth Officer of Optum, and from June 2016 to April 2017 she served as Chief Financial Officer of Optum, the health service platform of UnitedHealth Group, and as Chief Marketing Officer of Optum from September 2014 to June 2016. From April 2001 until September 2014, Ms. Reller served in several executive roles with Microsoft Corporation including Executive Vice President of Marketing, Windows Chief Financial Officer and Chief Marketing Officer, Divisional Chief Financial Officer and Corporate Vice President of Dynamics. She was also the Chief Financial Officer of Great Plains Software from 1999 to 2001, until the company was acquired by Microsoft Corporation.