SL Green Realty Executive and Leadership Team

September, 2026

Leadership Overview

SL Green Realty has 4 executives leading key functions including corporate strategy, financial oversight, legal compliance, and investment management.

Focused on maximizing property value across the New York metropolitan area, SL Green Realty maintains a commitment to excellence in real estate investment and asset management through disciplined growth.

Leadership Roles at SL Green Realty

  • Chairman & Chief Executive Officer - Marc Holliday
  • Chief Financial Officer - Matthew Diliberto
  • President & Chief Investment Officer - Harrison Sitomer
  • Executive Vice President & Real Property General Counsel - Neil Kessner
  • Marc Holliday - Chairman & Chief Executive Officer

    Marc Holliday, the Chairman & Chief Executive Officer at SL Green Realty, directs the overarching corporate strategy for the largest office landlord in New York City. Overseeing the entire portfolio, the Chairman & Chief Executive Officer ensures alignment between asset performance and long-term shareholder value. This leadership role involves constant evaluation of market trends to maintain a competitive edge in the commercial real estate sector. By driving high-level initiatives, Marc Holliday directly impacts the operational success of the firm. The Chairman & Chief Executive Officer coordinates with the Board to refine investment policies and capital allocation strategies. Through rigorous oversight of property management and acquisition activities, the Chairman & Chief Executive Officer secures the firm's position as a market leader. Holliday maintains a focus on sustainable growth and operational efficiency across all regional holdings, ensuring the organization remains resilient within the complex urban landscape of the United States.
    Marc Holliday

    Matthew Diliberto - Chief Financial Officer

    Matthew Diliberto, the Chief Financial Officer at SL Green Realty, manages the financial health and capital structure of the organization. Overseeing all accounting, treasury, and investor relations functions, the Chief Financial Officer ensures transparency and fiscal discipline across the entire real estate portfolio. This leadership role involves optimizing debt profiles and managing liquidity to support ongoing property acquisitions and development projects. By implementing robust financial controls, Matthew Diliberto directly impacts the firm's ability to navigate volatile market conditions. The Chief Financial Officer collaborates with the executive team to forecast revenue streams and allocate capital toward high-yield assets. Through precise financial reporting and strategic planning, the Chief Financial Officer maintains investor confidence and supports the company's growth objectives. Diliberto drives the financial strategy, ensuring the firm remains well-capitalized to pursue opportunities within the competitive New York real estate market while maintaining a strong balance sheet.
    Matthew Diliberto

    Harrison Sitomer - President & Chief Investment Officer

    Harrison Sitomer, the President & Chief Investment Officer at SL Green Realty, directs the acquisition and disposition strategies for the firm's extensive property portfolio. Overseeing the identification of new investment opportunities and the optimization of existing assets, the President & Chief Investment Officer ensures the company maintains a high-performing real estate footprint. This leadership role involves analyzing market data to execute strategic purchases that enhance the firm's value proposition. By driving the investment pipeline, Harrison Sitomer directly impacts the growth trajectory of the organization. The President & Chief Investment Officer collaborates with the finance and operations teams to evaluate the feasibility of development projects and capital improvements. Through proactive market engagement and disciplined asset selection, the President & Chief Investment Officer secures long-term value for stakeholders. Sitomer manages the investment lifecycle, ensuring the firm remains a dominant force in the New York real estate market through strategic expansion and portfolio refinement.
    Harrison Sitomer

    Neil Kessner - Executive Vice President & Real Property General Counsel

    Neil Kessner, the Executive Vice President & Real Property General Counsel at SL Green Realty, architects the legal framework for all property transactions and corporate governance matters. Overseeing complex lease negotiations, zoning compliance, and litigation management, the Executive Vice President & Real Property General Counsel ensures the firm operates within all regulatory requirements. This leadership role involves mitigating risk during large-scale acquisitions and divestitures across the New York metropolitan area. By providing expert legal guidance, Neil Kessner directly impacts the successful execution of strategic real estate deals. The Executive Vice President & Real Property General Counsel collaborates with the investment team to structure agreements that protect the firm's interests. Through meticulous attention to contractual detail and regulatory shifts, the Executive Vice President & Real Property General Counsel safeguards the organization's assets. Kessner drives legal excellence, ensuring all business operations align with the highest standards of corporate integrity and legal compliance.

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    Frequently Asked Questions Regarding SL Green Realty Top Executives and Leadership Team

    Who leads SL Green Realty?
    SL Green Realty is led by Marc Holliday (Chairman & Chief Executive Officer), along with executives such as Matthew Diliberto (Chief Financial Officer) and Harrison Sitomer (President & Chief Investment Officer).
    Who is part of SL Green Realty’s executive team?
    The executive team of SL Green Realty includes leaders such as Marc Holliday (Chairman & Chief Executive Officer), Matthew Diliberto (Chief Financial Officer), Harrison Sitomer (President & Chief Investment Officer) and other senior executives.
    How many executives does SL Green Realty have?
    SL Green Realty has 4 executives leading key business areas.
    What roles are included in SL Green Realty’s leadership team?
    The leadership team of SL Green Realty includes roles such as Chairman & Chief Executive Officer, Chief Financial Officer, President & Chief Investment Officer, Executive Vice President & Real Property General Counsel.