Winsupply Executive and Leadership Team

June, 2026

Leadership Overview

Winsupply has 10 executives leading key functions including strategy, operations, and business development.

Driven by a mission to help hard-working people achieve the American dream, Winsupply empowers enterprising entrepreneurs with the support and services needed to own and operate their own businesses, reinventing traditional success strategies.

Leadership Roles at Winsupply

  • President - Royce Tandy
  • President - Steven Erickson
  • President - Amanda Magruder
  • President - Daniel MacWilliam
  • President and Owner TriState WInsupply - Ronald Slaats
  • President - John McKenzie
  • President, -Training - Conner Leahr
  • President - Renee Mayes
  • President - Jeffrey Plenzio
  • President - Drew Shiveley
  • Royce Tandy - President

    Royce Tandy, the President at Winsupply, drives the strategic direction and operational execution for key business units. Tandy oversees the integration of new entrepreneurial ventures into the Winsupply network, ensuring alignment with the company's core mission of fostering business ownership. This leadership involves cultivating a culture of innovation and accountability across multiple regions, directly impacting the company's ability to provide materials for residential and commercial construction and industrial use. Royce Tandy's focus remains on expanding market reach and enhancing service delivery to support the growth of independent businesses within the Winsupply ecosystem. The President ensures that operational frameworks support the company's long-standing commitment to entrepreneurial success and the pursuit of the American dream.

    Steven Erickson - President

    Steven Erickson, the President at Winsupply, directs critical operational functions and strategic market penetration. Erickson's role involves optimizing supply chain logistics and ensuring the efficient distribution of materials for residential and commercial construction, as well as industrial applications. This leadership position requires close collaboration with regional managers to foster business growth and maintain high service standards. Steven Erickson champions the company's mission to empower entrepreneurs, providing the necessary support structures for business owners to thrive. The President's oversight extends to implementing best practices that enhance operational efficiency and profitability across the Winsupply Family of Companies, reinforcing the commitment to helping individuals achieve entrepreneurial success.

    Amanda Magruder - President

    Amanda Magruder, the President at Winsupply, spearheads initiatives focused on market expansion and strategic partnerships. Magruder's leadership ensures that the Winsupply Family of Companies effectively serves the residential and commercial construction sectors, alongside industrial clients, by providing essential materials and robust support services. This role involves cultivating relationships with new and existing business owners, guiding them through the process of establishing and growing their independent enterprises. Amanda Magruder's strategic vision supports the company's overarching mission to help hard-working individuals achieve the American dream. The President's responsibilities include driving operational excellence and fostering an environment where entrepreneurial spirit can flourish, contributing significantly to the company's sustained growth and market impact.
    Amanda Magruder

    Daniel MacWilliam - President

    Daniel MacWilliam, the President at Winsupply, leads critical operational divisions and strategic growth planning. MacWilliam's executive function involves overseeing the supply chain and distribution networks that deliver essential materials for residential and commercial construction, as well as industrial applications across various markets. This leadership role is pivotal in supporting the company's mission to provide enterprising entrepreneurs with the opportunity to own and operate their own businesses. Daniel MacWilliam ensures that robust support and services are consistently available, enabling business owners to navigate evolving market demands. The President's strategic focus enhances operational efficiency and fosters a strong entrepreneurial ecosystem, directly contributing to the achievement of the American dream for many.
    Daniel MacWilliam

    Ronald Slaats - President and Owner TriState WInsupply

    Ronald Slaats, the President and Owner TriState WInsupply at Winsupply, directs the comprehensive operations and strategic development of the TriState region. Slaats's leadership ensures the effective supply of materials for residential and commercial construction, as well as industrial use, tailored to the specific needs of the TriState market. This dual role as President and Owner signifies a deep commitment to fostering entrepreneurial success, providing hands-on support and strategic guidance to local business owners within the Winsupply framework. Ronald Slaats champions the company's mission to help hard-working individuals achieve the American dream by cultivating a thriving business environment. The President and Owner's focus on operational excellence and customer service strengthens the regional presence and reinforces Winsupply's core values.

    John McKenzie - President

    John McKenzie, the President at Winsupply, drives strategic initiatives and operational oversight for key market segments. McKenzie's executive responsibilities include ensuring the seamless provision of materials for residential and commercial construction, as well as industrial applications, across his designated territories. This leadership position is central to Winsupply's mission of empowering enterprising entrepreneurs by offering comprehensive support and services. John McKenzie cultivates a business environment that encourages innovation and growth, enabling individuals to achieve the American dream through business ownership. The President's strategic direction focuses on enhancing operational efficiencies and expanding market penetration, reinforcing the company's commitment to supporting hard-working people in their entrepreneurial endeavors.
    John McKenzie

    Conner Leahr - President, -Training

    Conner Leahr, the President, -Training at Winsupply, spearheads the development and implementation of comprehensive training programs for the entrepreneurial network. Leahr's role is critical in equipping business owners with the skills and knowledge necessary to succeed in supplying materials for residential and commercial construction, and industrial use. This leadership function directly supports Winsupply's mission to provide robust support and services, enabling individuals to own and operate their own businesses effectively. Conner Leahr focuses on enhancing operational capabilities and fostering a culture of continuous learning, ensuring that entrepreneurs are well-prepared to meet market demands and achieve the American dream. The President, -Training's strategic input strengthens the foundation for entrepreneurial success across the Winsupply Family of Companies.

    Renee Mayes - President

    Renee Mayes, the President at Winsupply, directs strategic operations and market development initiatives. Mayes's executive purview encompasses ensuring the efficient supply of materials vital for residential and commercial construction, as well as industrial applications, across key operational areas. This leadership role is fundamental to Winsupply's core mission of empowering enterprising entrepreneurs by providing them with the essential support and services needed to establish and grow their own businesses. Renee Mayes champions an environment that fosters innovation and operational excellence, directly contributing to the company's objective of helping hard-working individuals achieve the American dream. The President's strategic focus enhances regional performance and reinforces the company's commitment to entrepreneurial success.
    Renee Mayes

    Jeffrey Plenzio - President

    Jeffrey Plenzio, the President at Winsupply, leads strategic planning and operational execution for critical business segments. Plenzio's executive function involves overseeing the distribution of essential materials for residential and commercial construction, as well as industrial use, ensuring market demands are met efficiently. This leadership position is integral to Winsupply's mission of providing enterprising entrepreneurs with the opportunity to own and operate their own businesses, backed by comprehensive support and services. Jeffrey Plenzio drives initiatives that enhance operational performance and foster business growth, directly supporting the company's commitment to helping hard-working people achieve the American dream. The President's strategic oversight strengthens the company's market presence and entrepreneurial ecosystem.

    Drew Shiveley - President

    Drew Shiveley, the President at Winsupply, directs strategic market initiatives and operational management. Shiveley's leadership ensures the effective supply of materials crucial for residential and commercial construction, and industrial applications, across designated regions. This role is central to Winsupply's mission of empowering enterprising entrepreneurs by furnishing them with the necessary support and services to own and operate their own businesses successfully. Drew Shiveley cultivates an environment that promotes innovation and operational efficiency, directly contributing to the company's goal of helping hard-working individuals achieve the American dream. The President's strategic focus enhances regional capabilities and reinforces the company's dedication to entrepreneurial success.

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    Frequently Asked Questions Regarding Winsupply Top Executives and Leadership Team

    Who leads Winsupply?
    Winsupply is led by Royce Tandy (President), along with executives such as Steven Erickson (President) and Amanda Magruder (President).
    Who is part of Winsupply’s executive team?
    The executive team of Winsupply includes leaders such as Royce Tandy (President), Steven Erickson (President), Amanda Magruder (President) and other senior executives.
    How many executives does Winsupply have?
    Winsupply has 10 executives leading key business areas.
    What roles are included in Winsupply’s leadership team?
    The leadership team of Winsupply includes roles such as President, President, President, President, President and Owner TriState WInsupply.