Marachel L. Knight has served as a director since July 2020. In December 2022, Ms. Knight retired as Senior Vice President of Strategic Program Realization at AT&T, Inc., a leading provider of telecommunications, media, and technology services globally, where she was responsible for managing prioritization of a multi-billion-dollar capital portfolio and delivering strategic initiatives, products and services that spanned across the enterprise. Prior to holding that position, she served as the Senior Vice President of Technology Planning and Operations at AT&T, Inc., from April 2021 to April 2022. Prior to holding that position, she held various leadership positions at AT&T, Inc. over her more than 25 year tenure, including Senior Vice President of Engineering and Operations from 2020 to 2021; Senior Vice President of Technology Services and Operations from 2019 to 2020; Senior Vice President of Wireless and Access Engineering, Construction and Operations from 2018 to 2019; Senior Vice President of Technology Planning and Engineering from 2017 to 2018; Senior Vice President Wireless Network Architecture and Design during 2017; Vice President Advanced Technology Planning and Realization from 2016 to 2017; and Vice President Construction and Engineering (Midwest Region) from 2015 to 2016. Prior to holding these positions, she held other leadership roles at AT&T, Inc. of increasing responsibility. Ms. Knight serves on the board of directors of LM Ericsson Telephone Company. She holds a Master of Science, Information Networking from Carnegie Mellon University and a Bachelor of Science, Electrical Engineering from Florida State University. Ms. Knight brings to the Board her technical and operational leadership gained over her 27 years of experience at AT&T, including her experience managing technology operations at scale as well as experience in 5G planning and rollouts that provides us with insights related to our technology and strategic business priorities in our carrier infrastructure end market.