Clean Earth Executive and Leadership Team

May, 2026

Leadership Overview

Clean Earth has 7 executives leading key functions including strategy, information technology, finance, operations, and market expansion.

Driven by a commitment to environmental responsibility, Clean Earth delivers comprehensive waste management, recycling, and remediation solutions, specializing in processing hazardous and nonhazardous waste to meet sustainability and compliance goals.

Leadership Roles at Clean Earth

  • Chief Executive Officer - Glenn Kulik
  • Chief Financial Officer - Tricia Papile
  • Chief Operating Officer - Mark Kasper
  • President - Daniel Fredrickson
  • President - Robert Manz
  • President - Diana Holzhauer
  • Chief Information Officer - Shayne Reeb
  • Glenn Kulik - Chief Executive Officer

    Glenn Kulik, the Chief Executive Officer at Clean Earth, directs the company's overarching strategy and operational execution. Kulik guides the executive team in delivering comprehensive waste management, recycling, and remediation solutions. This leadership involves overseeing the processing and treatment of hazardous and nonhazardous waste, contaminated soils, and dredged materials. Kulik ensures that Clean Earth's tailored solutions consistently help businesses meet sustainability and compliance goals across diverse industries. The Chief Executive Officer's focus remains on driving innovation and expanding the company's market impact while upholding rigorous environmental standards. Glenn Kulik's strategic vision shapes the company's direction, fostering growth and reinforcing its position as a leader in environmental services.

    Tricia Papile - Chief Financial Officer

    Tricia Papile, the Chief Financial Officer at Clean Earth, manages the company's financial operations and strategic fiscal planning. Papile oversees all aspects of financial reporting, budgeting, and investment, ensuring robust fiscal health for the environmental services company. This leadership position involves managing the financial aspects of comprehensive waste management, recycling, and remediation solutions, including the processing of hazardous and nonhazardous waste, contaminated soils, and dredged materials. The Chief Financial Officer plays a critical part in developing financial strategies that support business growth and operational efficiency. Tricia Papile's expertise guides the company in meeting sustainability and compliance goals by optimizing resource allocation and financial performance. Papile ensures financial integrity and drives profitability.

    Mark Kasper - Chief Operating Officer

    Mark Kasper, the Chief Operating Officer at Clean Earth, directs the company's day-to-day operational activities and service delivery. Kasper oversees the execution of comprehensive waste management, recycling, and remediation solutions, ensuring efficiency and compliance across all sites. This role involves managing the complex logistics of processing hazardous and nonhazardous waste, contaminated soils, and dredged materials. The Chief Operating Officer focuses on optimizing operational workflows and implementing best practices to enhance service quality and client satisfaction. Mark Kasper's leadership ensures that Clean Earth consistently delivers tailored solutions that help businesses meet their sustainability and compliance goals. Kasper drives operational excellence and supports the company's expansion.

    Daniel Fredrickson - President

    Daniel Fredrickson, the President at Clean Earth, drives strategic initiatives and market development for the environmental services company. Fredrickson focuses on expanding the company's reach and enhancing its comprehensive waste management, recycling, and remediation solutions. This leadership role involves fostering key business relationships and identifying new opportunities for growth in processing hazardous and nonhazardous waste, contaminated soils, and dredged materials. The President works to ensure that Clean Earth's tailored solutions effectively support businesses in achieving their sustainability and compliance objectives. Daniel Fredrickson's vision propels the company forward, strengthening its market position and commitment to environmental stewardship.

    Robert Manz - President

    Robert Manz, the President at Clean Earth, oversees critical aspects of the company's operational expansion and service delivery. Manz focuses on enhancing the effectiveness of comprehensive waste management, recycling, and remediation solutions, particularly in the processing of hazardous and nonhazardous waste, contaminated soils, and dredged materials. This leadership position involves ensuring operational readiness and compliance across diverse industry sectors. The President works to align operational strategies with the company's mission of providing tailored solutions that help businesses meet sustainability and compliance goals. Robert Manz's dedication to operational excellence supports Clean Earth's reputation for reliability and environmental responsibility.
    Robert Manz

    Diana Holzhauer - President

    Diana Holzhauer, the President at Clean Earth, leads strategic market engagement and client relations for the environmental services firm. Holzhauer focuses on strengthening the company's ability to deliver comprehensive waste management, recycling, and remediation solutions. This role involves cultivating partnerships and ensuring that the processing of hazardous and nonhazardous waste, contaminated soils, and dredged materials meets stringent client requirements. The President champions the company's commitment to providing tailored solutions that assist businesses in achieving their sustainability and compliance goals. Diana Holzhauer's leadership enhances Clean Earth's client-centric approach and market presence, driving value and environmental impact.

    Shayne Reeb - Chief Information Officer

    Shayne Reeb, the Chief Information Officer at Clean Earth, architects the company's technology infrastructure and digital transformation initiatives. Reeb oversees the integration of advanced IT systems to support comprehensive waste management, recycling, and remediation operations. This role involves ensuring the security and efficiency of data management for processing hazardous and nonhazardous waste, contaminated soils, and dredged materials. The Chief Information Officer drives the adoption of innovative technologies that enhance operational effectiveness and client service delivery. Shayne Reeb's leadership ensures that Clean Earth leverages cutting-edge digital solutions to meet evolving sustainability and compliance demands across various industries. Reeb's strategic technology planning supports the company's growth and operational excellence.
    Shayne Reeb

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    Frequently Asked Questions Regarding Clean Earth Top Executives and Leadership Team

    Who leads Clean Earth?
    Clean Earth is led by Glenn Kulik (Chief Executive Officer), along with executives such as Tricia Papile (Chief Financial Officer) and Mark Kasper (Chief Operating Officer).
    Who is part of Clean Earth’s executive team?
    The executive team of Clean Earth includes leaders such as Glenn Kulik (Chief Executive Officer), Tricia Papile (Chief Financial Officer), Mark Kasper (Chief Operating Officer) and other senior executives.
    How many executives does Clean Earth have?
    Clean Earth has 7 executives leading key business areas.
    What roles are included in Clean Earth’s leadership team?
    The leadership team of Clean Earth includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President, President.