Latest News By Industry

Kathleen Mazzarella

Also Known As Mozzarella’s

CEO of Graybar Electric

Kathleen Mazzarella's profile picture

Kathleen "Kathy" Mazzarella has been the Chief Executive officer and President of Graybar Electric, Inc. (GRAYB)

since June 1, 2012. In addition, she has been the Chairman of Graybar Electric Co. since January 1, 2013.As of May 2020, she is one of only 37 women CEOs of the Fortune 500.

Mazzarella started with Graybar in 1980 as a customer service representative. She progressed through various sales positions and then moved to field sales management roles. Soon after her first management assignment, Mazzarella was promoted to National Product Manager, and later served in other executive-level positions. She was named executive vice president and chief operating officer in 2010 and president and CEO in 2012. She was named chairman of the board of directors in 2013.


  • Mazzarella has an associate's degree in telecommunications engineering -
  • Bachelor of Arts in Applied Behavioral Sciences -
  • Master's degree in business - Webster University


  • Graybar Electric - CEO
  • Graybar Electric - President


Mozzarella’s business achievements and community involvement helped her earn several recognitions, including the St. Louis “40 Under 40” award in 2000 and the “Most Influential Businesswomen in St. Louis” award in 2004.Her views on human resources strategy were included as a chapter in Inside the Minds, a book featuring interviews with top HR practitioners across the United States. She was also featured as one of the “Women Worth Watching in 2010” in the September/October 2009 issue of Profiles in Diversity Journal. Mazzarella has been the driving force behind the establishment of a women's networking group at Graybar and in promoting careers for women in the wholesale distribution industry. In 2011, she received the Outstanding Alumna Award from the George Herbert Walker School of Business & Technology at Webster University. In 2014, Mazzarella was recognized by the Urban League of Metropolitan St. Louis as one of its distinguished women in leadership. In 2015, she earned the Women in Industry Trailblazer Award from the National Association of Electrical Distributors and was recognized as a Leader of Distinction by the YWCA of Metro St. Louis. In 2019, she was honored as a Junior Achievement Business Hall of Fame Laureate