Visterra Executive and Leadership Team

May, 2026

Leadership Overview

Visterra has 4 executives leading key functions including strategy, operations, finance, and market expansion.

Driven by a commitment to excellence, Visterra is dedicated to providing comprehensive commercial landscaping solutions nationwide, fostering trust-based relationships, and enhancing the competitive edge of its partner companies through sustainable practices and centralized support.

Leadership Roles at Visterra

  • Chief Executive Officer - Alan Handley
  • Chief Financial Officer - Leanne Flannery
  • Chief Operating Officer - Ronald Harris
  • President - John Sliwicki
  • Alan Handley - Chief Executive Officer

    Alan Handley, the Chief Executive Officer at Visterra, directs the overarching corporate strategy and nationwide expansion initiatives. Overseeing the integration of acquired companies and strategic partnerships, Handley ensures alignment with Visterra's mission to build trust-based relationships across all stakeholder levels. This leadership role involves setting the vision for sustainable business practices and driving the company's growth across diverse regional markets in the United States. By focusing on centralized support for partner companies, Alan Handley enhances their local competitive advantage. The Chief Executive Officer's strategic guidance is critical for maintaining Visterra's position as a leading commercial landscaping provider, encompassing maintenance, enhancements, construction, and snow removal services.
    Alan Handley

    Leanne Flannery - Chief Financial Officer

    Leanne Flannery, the Chief Financial Officer at Visterra, manages the financial health and strategic fiscal planning for the company's expanding national footprint. Overseeing all financial operations, including budgeting, forecasting, and investment strategies, Flannery ensures fiscal responsibility across Visterra and its partner entities. This leadership position is crucial for supporting nationwide growth through strategic acquisitions and partnerships, maintaining financial stability. Leanne Flannery directs the financial integration of new companies, ensuring compliance and maximizing profitability. The Chief Financial Officer's expertise is vital for sustaining Visterra's commitment to sustainable business practices and providing robust financial support that enhances the competitive edge of local operations.

    Ronald Harris - Chief Operating Officer

    Ronald Harris, the Chief Operating Officer at Visterra, executes the operational framework supporting the company's nationwide service delivery. Overseeing the day-to-day functions of maintenance, enhancements, construction, and snow removal, Harris ensures seamless integration of services across all partner companies. This role involves optimizing operational efficiencies and implementing best practices to enhance service quality and client satisfaction throughout the United States. Ronald Harris drives the standardization of operational procedures, enabling Visterra to scale effectively through strategic acquisitions and partnerships. The Chief Operating Officer's focus on robust operational management directly supports the company's commitment to providing comprehensive landscaping solutions and maintaining strong client relationships.

    John Sliwicki - President

    John Sliwicki, the President at Visterra, spearheads market development and client relations across the United States. Overseeing the strategic expansion of Visterra's services, including maintenance, enhancements, construction, and snow removal, Sliwicki focuses on building and nurturing trust-based relationships with clients and partners. This executive role is central to driving Visterra's nationwide presence through strategic acquisitions and fostering strong connections within local markets. John Sliwicki champions the company's commitment to providing comprehensive landscaping solutions and ensuring client satisfaction. The President's leadership ensures that Visterra's partner companies receive the necessary support to excel and maintain a competitive edge in their respective regions.

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    Frequently Asked Questions Regarding Visterra Top Executives and Leadership Team

    Who leads Visterra?
    Visterra is led by Alan Handley (Chief Executive Officer), along with executives such as Leanne Flannery (Chief Financial Officer) and Ronald Harris (Chief Operating Officer).
    Who is part of Visterra’s executive team?
    The executive team of Visterra includes leaders such as Alan Handley (Chief Executive Officer), Leanne Flannery (Chief Financial Officer), Ronald Harris (Chief Operating Officer) and other senior executives.
    How many executives does Visterra have?
    Visterra has 4 executives leading key business areas.
    What roles are included in Visterra’s leadership team?
    The leadership team of Visterra includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President.