Kathleen Mazzarella

Chairman at WASTE MANAGEMENT, INC.

Net worth: 14 M $ as of 2026-06-29

66 year

58 connections

Commercial Services

Finance

Distribution Services

Profile

Kathleen M.
Mazzarella is Chairman, President & Chief Executive Officer at Graybar Electric Co., Inc. since 2013.
She is Chairman at Waste Management, Inc. since 2023.
She serves as Director at Cigna Holding Co., Civic Progress, Variety the Children's Charity of St. Louis, National Association of Wholesaler-Distributors, and St. Louis Regional Chamber & Growth Association.
She is Independent Director at The Cigna Group since 2018 and at Core & Main, Inc. since 2021.
She is a Member of The Committee of 200 and Missouri Women's Forum.
Former roles include Chairman at Federal Reserve Bank of St. Louis from 2016 to 2020, Independent Director at Evernorth Health, Inc. from 2017 to 2018, Director at United Way of Greater St. Louis, Saint Louis Club, NAW Institute For Distribution Excellence, Greater St Louis, Inc., and Oppenheimer Trust Co. in 2019.
She was Director at Core & Main Holdings LP from 2019 to 2021 and a Member of Vistage Worldwide, Inc.Education includes undergraduate studies at National-Louis University and an MBA from Webster University.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
CORE & MAIN, INC. CLASS B 1.46%	2026-04-26	140,885 ( 1.46% )	7 M $	2026-06-29
WASTE MANAGEMENT, INC. 0%	2026-05-14	18,276 ( 0% )	4 M $	2026-06-29
CIGNA GROUP 0%	2026-04-21	6,891 ( 0% )	2 M $	2026-06-29
CORE & MAIN, INC. CLASS A 0.01%	2026-06-22	16,839 ( 0.01% )	812 482 $	2026-06-29

Kathleen Mazzarella active positions

Companies	Position	Start
WASTE MANAGEMENT, INC.	Chairman	2023-05-08
CIGNA	Director/Board Member	2017-12-31
CORE & MAIN, INC.	Director/Board Member	2021-06-30
Graybar Electric Co., Inc. Graybar Electric Co., Inc. Wholesale DistributorsDistribution Services Distributes electrical, industrial, automation and connectivity products	Chief Executive Officer	2012-05-31
Cigna Holding Co. Cigna Holding Co. Life/Health InsuranceFinance Operates as a holding company whose subsidiaries provides health insurance, managed care, retirement products and individual financial services	Director/Board Member	-
The Committee of 200 The Committee of 200 Miscellaneous Commercial ServicesCommercial Services Operates membership organization of the women entrepreneurs and corporate innovators	Corporate Officer/Principal	-
Missouri Women's Forum	Corporate Officer/Principal	-
Civic Progress	Director/Board Member	-
National Association of Wholesaler-Distributors National Association of Wholesaler-Distributors Miscellaneous Commercial ServicesCommercial Services Operates as a trade association for wholesale distribution industry	Director/Board Member	-
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All active positions of Kathleen Mazzarella

Former positions of Kathleen Mazzarella

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See the detail of Kathleen Mazzarella's experience

Training of Kathleen Mazzarella

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Kathleen Mazzarella's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	22
Cigna Holding Co. Cigna Holding Co. Life/Health InsuranceFinance Operates as a holding company whose subsidiaries provides health insurance, managed care, retirement products and individual financial services	Finance
Graybar Electric Co., Inc. Graybar Electric Co., Inc. Wholesale DistributorsDistribution Services Distributes electrical, industrial, automation and connectivity products	Distribution Services
Waste Management, Inc. Waste Management, Inc. Environmental ServicesIndustrial Services Operates as a holding company which provides waste management services	Industrial Services
Evernorth Health, Inc. Evernorth Health, Inc. Insurance Brokers/ServicesFinance Provides pharmacy benefit management services	Finance
National-Louis University National-Louis University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Webster University Webster University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
National Association of Wholesaler-Distributors National Association of Wholesaler-Distributors Miscellaneous Commercial ServicesCommercial Services Operates as a trade association for wholesale distribution industry	Commercial Services
Federal Reserve Bank of St. Louis Federal Reserve Bank of St. Louis General GovernmentGovernment Federal reserve bank	Government
Civic Progress
The Committee of 200 The Committee of 200 Miscellaneous Commercial ServicesCommercial Services Operates membership organization of the women entrepreneurs and corporate innovators	Commercial Services
St. Louis Regional Chamber & Growth Association St. Louis Regional Chamber & Growth Association Miscellaneous Commercial ServicesCommercial Services Operates as a chamber of commerce	Commercial Services
United Way of Greater St. Louis United Way of Greater St. Louis Miscellaneous Commercial ServicesCommercial Services Raises and allocates funds for charities	Commercial Services
Vistage Worldwide, Inc. Vistage Worldwide, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a CEO coaching and peer advisory organization	Commercial Services
Saint Louis Club Saint Louis Club RestaurantsConsumer Services Operates dining clubs	Consumer Services
Variety the Children's Charity of St. Louis Variety the Children's Charity of St. Louis Variety the Children's Charity of St. Louis is a nonprofit organization dedicated to empowering children and teens with disabilities (birth to age 21) in the greater St. Louis area. The private company is based in St. Louis, MO. The charity provides medical equipment, comprehensive therapy services through its TherHappy Kids program (including physical, occupational, speech, aqua, and hippotherapy), and inclusive programs in recreation and performing arts. Key offerings include the ACA-accredited Variety Adventure Camp, which provides week-long sessions of social, skill-building, and recreational activities, and free performing arts programs in musical theatre, dance, and chorus. The organization emphasizes enhancing independence, skill development, socialization, and self-confidence for children with physical and developmental disabilities. Community involvement is encouraged through volunteer opportunities, leadership groups, and family engagement.
Missouri Women's Forum
Oppenheimer Trust Co. Oppenheimer Trust Co. Investment Banks/BrokersFinance Part of Oppenheimer Holdings, Inc., Oppenheimer Trust Co. is a company based in New York, NY.	Finance
The Cigna Group The Cigna Group Managed Health CareHealth Services Provides pharmacy benefits management, health and life insurance & fees administration services	Health Services
Core & Main Holdings LP Core & Main Holdings LP Wholesale DistributorsDistribution Services Operates as a holding company whose subsidiary distributes water infrastructure products	Distribution Services
Core & Main, Inc. Core & Main, Inc. Wholesale DistributorsDistribution Services Distributes water, sewer, storm drain and fire protection products	Distribution Services
Greater St Louis, Inc. Greater St Louis, Inc. Greater St Louis, Inc. is a private company based in St. Louis, MO. The CEO of the company is Jason Hall.
Naw Institute For Distribution Excellence Naw Institute For Distribution Excellence NAW Institute For Distribution Excellence is a company based in IL.