SL Green Realty Executive and Leadership Team

August, 2026

Leadership Overview

SL Green Realty has 5 executives leading key functions including strategy, financial oversight, legal compliance, investment management, and property counsel.

Focused on maximizing asset value across the New York City market, SL Green Realty maintains a commitment to excellence in real estate investment and property 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
  • Chief Legal Officer - Andrew Levine
  • 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 and long-term vision for the firm. Overseeing the entire portfolio of commercial assets, the Chairman & Chief Executive Officer ensures that all investment activities align with the core mission of maximizing property value within the competitive New York City landscape. This leadership role involves constant engagement with the Board to refine capital allocation and operational efficiency. By driving high-level initiatives, Marc Holliday secures the market position of the organization against shifting economic conditions. The Chairman & Chief Executive Officer maintains rigorous standards for asset performance, ensuring that the firm remains a leader in the real estate investment trust sector. Through decisive action and strategic foresight, the executive fosters sustainable growth and long-term value creation for all stakeholders involved in the enterprise.
    Marc Holliday

    Matthew Diliberto - Chief Financial Officer

    Matthew Diliberto, the Chief Financial Officer at SL Green Realty, manages the fiscal health and capital structure of the organization. Overseeing all financial reporting, treasury operations, and investor relations, the Chief Financial Officer ensures transparency and accuracy in every transaction. This role involves coordinating with the executive team to optimize debt management and equity financing strategies that support property acquisitions. By analyzing market trends, Matthew Diliberto provides the necessary data to guide investment decisions across the regional portfolio. The Chief Financial Officer maintains strong relationships with capital markets to ensure liquidity and financial stability for the firm. Through meticulous oversight of the balance sheet, the executive supports the broader mission of the company, ensuring that financial resources align with the strategic goals of the real estate investment trust while maintaining a robust fiscal foundation.
    Matthew Diliberto

    Harrison Sitomer - President & Chief Investment Officer

    Harrison Sitomer, the President & Chief Investment Officer at SL Green Realty, architects the investment strategy and portfolio expansion efforts. Overseeing the identification and acquisition of prime commercial assets, the President & Chief Investment Officer drives the growth of the property holdings across the region. This role involves evaluating market opportunities and executing transactions that enhance the value of the existing portfolio. By leading the investment team, Harrison Sitomer ensures that every acquisition aligns with the long-term objectives of the firm. The President & Chief Investment Officer works closely with the executive leadership to balance risk and reward in a dynamic real estate market. Through rigorous analysis and strategic deal-making, the executive secures the competitive advantage of the company, ensuring that the investment pipeline remains robust and capable of delivering consistent value to the organization.
    Harrison Sitomer
    Andrew Levine, the Chief Legal Officer at SL Green Realty, governs the legal framework and regulatory compliance for all corporate activities. Overseeing complex real estate transactions, the Chief Legal Officer mitigates risk while facilitating the acquisition and management of high-value properties. This role involves providing counsel on governance, litigation, and contractual obligations to ensure the firm operates within all legal parameters. By navigating the intricate regulatory environment of the New York real estate market, Andrew Levine protects the interests of the organization and its shareholders. The Chief Legal Officer collaborates with other executives to structure deals that support the growth objectives of the company. Through proactive legal strategy, the executive ensures that all business operations remain compliant and secure, ultimately reinforcing the reputation and operational integrity of the firm in a highly regulated industry.
    Andrew Levine

    Neil Kessner - Executive Vice President & Real Property General Counsel

    Neil Kessner, the Executive Vice President & Real Property General Counsel at SL Green Realty, manages the legal intricacies of property-specific operations and development projects. Overseeing the legal aspects of leasing, zoning, and property management, the Executive Vice President & Real Property General Counsel ensures that all physical assets comply with local regulations and internal standards. This role involves drafting and negotiating complex agreements that govern the daily operations of the portfolio. By providing specialized legal guidance on real property matters, Neil Kessner supports the operational efficiency of the firm. The Executive Vice President & Real Property General Counsel collaborates with the investment and management teams to resolve disputes and optimize property performance. Through deep expertise in real estate law, the executive safeguards the physical and financial interests of the company, ensuring that all property-related activities contribute to the overall success of the firm.

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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 5 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, Chief Legal Officer, Executive Vice President & Real Property General Counsel.