On January 26, 2021, Calix, Inc. promoted and appointed Michael Weening, age 52, to the position of President and Chief Operating Officer of the company effective January 27, 2021. In connection with Mr. Weening's appointment, Carl Russo, age 64, resigned his role as President effective January 27, 2021 and will continue to serve as Chief Executive Officer of the company. Mr. Weening joined Calix in June 2016 and previously served in executive roles as the Company's Executive Vice President, Chief Operating Officer since August 2020; as Executive Vice President, Global Operations from January 2019 until August 2020; as Executive Vice President, Field Operations from July 2018 until January 2019; as Executive Vice President, Sales and Marketing from November 2016 until June 2018; and as Executive Vice President, Sales from June 2016 until November 2016.