Arthur D. Sams has served as our President, Chief Executive Officer and Chairman of our Board since August 1991 and as our Secretary since October 2016. Under his leadership, we have grown to be a leading brand name in the design and manufacturing of DC power systems for the telecommunications, military, automotive, marine and industrial markets. He specializes in the design of thermodynamics and power generation systems. During his early career, he gained vast industry experience while working as a machinist, engineer, project manager, chief technical officer and consultant for various Fortune 500 companies and the U.S. Department of Defense and the U.S. Department of Energy. Mr. Sams studied at California State Polytechnic University Pomona and the University California at Irvine with a dual major in biology and engineering.

Keith Albrecht has served as a member of our Board since May 2016 and serves as a member of each of our Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee. Mr. Albrecht has extensive experience as a commercial real estate appraiser for commercial banks and local governments. Mr. Albrecht was an appraiser for commercial buildings for the County of Orange, California, from 1996 to 2007, where he was responsible for the assessment of property values of shopping malls, office buildings, hotels and apartment buildings. Prior thereto, Mr. Albrecht was an appraiser for Security Pacific Bank and Bank of America, from 1985 to 1996. Mr. Albrecht is currently retired and invests in startups and small cap companies.

Mr. Field joins the Polar Board with four decades of experience in global manufacturing and equipment spanning engineering and technology development, lean manufacturing, factory and systems integration, product management and channel development. He has held key operating and managerial roles and positions both at the divisional and executive levels at UTC Carrier Corporation, PRI Automation and Brooks Automation, and is currently the President and CEO of The Raymond Corporation, which is in the materials handling market.

He holds a BS in Mechanical Engineering from Rochester Institute of Technology (RIT), an MS in Manufacturing Engineering and MBA with a concentration in International Operations from Boston University.

Katherine Koster has served as a member of our Board since December 2019 and serves as a member of each of our Audit Committee and Nominating and Corporate Governance Committee. Ms. Koster retired from a 30+ year career in Investment Banking/Public Finance in May of 2024. Most recently she was Senior Managing Director and Regional Manager for Hilltop Securities, LLC, where she assisted municipalities and developers in accessing the capital markets to fund critical infrastructure since February 2022. Ms. Koster was a managing director of public finance at D.A. Davidson from February 2021 to February 2022 and with Piper Sandler Companies from June 2008 to February 2021. Ms. Koster holds a Bachelor of Arts Degree in Theater/Business Administration from Pepperdine University and has completed the “Women in Governance: Preparing for Board Membership” corporate governance program at the UCLA Anderson School of Management. Ms. Koster has held the SIE, Series 7, Series 24 and Series 79TO licenses issued by the Financial Industry Regulatory Authority, Series 50, 52TO and Series 53 licenses issued by the Municipal Securities Rulemaking Board and a Series 63 certificate issued by the North American Securities Administrators Association.