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Kathy Mazzarella is chairman, president and CEO of Graybar, an employee-owned, Fortune 500 distributor of electrical, communications, and data networking products. Graybar has approximately 10,000 employees, 350 locations across North America, and $11.6 billion in annual revenue (2024). 

Kathy joined Graybar in 1980 in customer service and soon became one of Graybar’s top salespeople. She advanced into field sales management and later was promoted into corporate product management. At Graybar’s corporate headquarters, she held executive-level positions in strategic accounts, human resources, strategic planning, sales, and marketing. She was named executive vice president and chief operating officer in 2010. Kathy was appointed Graybar’s 11th president and CEO in 2012, and she became chairman of Graybar’s board of directors the following year. 

Kathy holds an associate degree in telecommunications engineering, a bachelor’s degree in applied behavioral sciences, and a master’s degree in business administration. 

She serves on the boards of Waste Management, Inc., Cigna Corporation, Core & Main LP, the National Association of Wholesaler-Distributors (NAW), and Greater St. Louis, Inc. In addition, she is a member of The Business Council, The ONYX Group, the International Women’s Forum, and The American Cancer Society’s CEOs Against Cancer of Missouri – St. Louis Chapter. She is also a Committee for Economic Development Trustee.  

As the Executive Director, Partnerships for the United States Chamber of Commerce Foundation, Hiring Our Heroes initiative, Meredith Lozar provides oversight and direction for the organization’s strategic engagement and partnerships, working across the public and private sectors to create economic opportunity for transitioning service members, veterans, and military spouses through coalition leadership, advocacy, and strategic partnerships.   

An active-duty Marine Corps spouse, military child, and leader in the military affairs field, Meredith uses her experience to promote various military spouse and veteran initiatives and serves as a subject matter expert on issues impacting the military community.   

Meredith also serves as the Past-President of the Board of Directors for the Association for Financial Counseling, Planning and Education (AFCPE) and is a member of the Board of Directors for Child Care Aware of America. She graduated summa cum laude from Purdue University and the University of Oklahoma from which she holds a Bachelor of Arts in psychology and a Master of Human Relations, respectively. An active volunteer for both the USMC and Daughters of the American Revolution, Meredith currently resides in California with her husband, Nick, and their daughter, Clara.