Yellowstone Landscape Executive and Leadership Team

July, 2026

Leadership Overview

Yellowstone Landscape has 4 executives leading key functions including strategy, information technology, finance, and operations.

Driven by a commitment to excellence, Yellowstone Landscape delivers professional landscape services, focusing on comprehensive maintenance, installation, and specialized tree care to enhance commercial properties.

Leadership Roles at Yellowstone Landscape

  • President & Chief Executive Officer - Harry Lamberton
  • Chief Financial Officer - Timothy Sherman
  • President - John Cerul
  • Chief Information Officer - Gabriel Perez
  • Harry Lamberton - President & Chief Executive Officer

    Harry Lamberton, the President & Chief Executive Officer at Yellowstone Landscape, directs the company's overall strategic vision and operational execution. Overseeing all business units, Lamberton ensures the delivery of comprehensive commercial landscaping services, including Landscape Maintenance, Irrigation Installation and Repair, Tree Care Services, Landscape Installation and Enhancements, and Snow & Ice Removal. This leadership role involves driving growth initiatives and maintaining the company's market position through superior service delivery. By aligning departmental objectives with corporate goals, Harry Lamberton fosters an environment of efficiency and client satisfaction across all operational facets. The focus remains on expanding service offerings and strengthening client relationships nationwide, ensuring Yellowstone Landscape remains a leader in the industry.

    Timothy Sherman - Chief Financial Officer

    Timothy Sherman, the Chief Financial Officer at Yellowstone Landscape, oversees all financial planning, management, and reporting activities. Directing the finance department, Sherman ensures fiscal responsibility and strategic resource allocation across all service lines, including landscape maintenance, irrigation, tree care, and snow removal. This position involves managing budgets, analyzing financial performance, and identifying opportunities for cost optimization and revenue enhancement. By providing critical financial insights, Timothy Sherman supports executive decision-making and drives the company's long-term financial health. The CFO's responsibilities include maintaining strong relationships with financial institutions and ensuring compliance with all regulatory requirements. Through meticulous financial oversight, Sherman underpins Yellowstone Landscape's stable growth and operational capacity.

    John Cerul - President

    John Cerul, the President at Yellowstone Landscape, drives operational excellence and service delivery across the company's diverse commercial landscaping divisions. Overseeing key functional areas, Cerul ensures the effective execution of landscape maintenance, irrigation installation and repair, tree care services, landscape installation and enhancements, and snow & ice removal. This leadership position focuses on optimizing field operations and enhancing client satisfaction through high-quality service provision. By fostering collaboration between operational teams, John Cerul promotes efficiency and responsiveness to client needs. The President's role involves implementing best practices in service delivery and managing the logistical complexities of large-scale commercial projects. Through dedicated leadership, Cerul ensures Yellowstone Landscape consistently meets and exceeds client expectations nationwide.

    Gabriel Perez - Chief Information Officer

    Gabriel Perez, the Chief Information Officer at Yellowstone Landscape, architects and manages the company's technology infrastructure and digital strategy. Overseeing all IT operations, Perez ensures the seamless integration of systems that support landscape maintenance, irrigation, tree care, and snow removal services. This critical role involves implementing innovative solutions to enhance operational efficiency and client communication. By driving technological advancements, Gabriel Perez supports the company's expansion and service delivery capabilities across its commercial client base. The CIO's focus extends to data security and system reliability, safeguarding company assets and client information. Through strategic IT planning, Perez enables Yellowstone Landscape to leverage technology for competitive advantage and sustained operational excellence.

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    Frequently Asked Questions Regarding Yellowstone Landscape Top Executives and Leadership Team

    Who leads Yellowstone Landscape?
    Yellowstone Landscape is led by Harry Lamberton (President & Chief Executive Officer), along with executives such as Timothy Sherman (Chief Financial Officer) and John Cerul (President).
    Who is part of Yellowstone Landscape’s executive team?
    The executive team of Yellowstone Landscape includes leaders such as Harry Lamberton (President & Chief Executive Officer), Timothy Sherman (Chief Financial Officer), John Cerul (President) and other senior executives.
    How many executives does Yellowstone Landscape have?
    Yellowstone Landscape has 4 executives leading key business areas.
    What roles are included in Yellowstone Landscape’s leadership team?
    The leadership team of Yellowstone Landscape includes roles such as President & Chief Executive Officer, Chief Financial Officer, President, Chief Information Officer.