Insight Partners Executive and Leadership Team

November, 2026

Leadership Overview

Insight Partners has 7 executives leading key functions including investment strategy, operational scaling, fund accounting, technology infrastructure, and financial management.

Focused on accelerating growth for software enterprises, Insight Partners delivers capital and operational expertise to transform early-stage technology companies into market-leading public entities through rigorous investment discipline.

Leadership Roles at Insight Partners

  • Chief Financial Officer, Fund Accounting - Stuart Mayer
  • Chief Financial Officer, -Residence - Joanne Iannacchino
  • Chief Operating Officer - Ian Sandler
  • Residence Vice President & Chief Technology Officer - Wes Rosenberg
  • Co-Founder & Managing Director - Jeff Horing
  • Managing Director - Mike Hayes
  • Managing Director - Michael Triplett
  • Stuart Mayer - Chief Financial Officer, Fund Accounting

    Stuart Mayer, the Chief Financial Officer, Fund Accounting at Insight Partners, directs the financial reporting and accounting functions for the firm's investment vehicles. Overseeing complex fund structures, the Chief Financial Officer, Fund Accounting ensures accurate valuation and compliance across all portfolio assets. This role involves managing relationships with limited partners and providing transparent financial oversight for the firm's diverse investment portfolio. By maintaining rigorous accounting standards, Stuart Mayer supports the firm's reputation for financial integrity and operational precision. Mayer drives the development of financial reporting systems that track performance metrics for software and internet platforms. The Chief Financial Officer, Fund Accounting coordinates with external auditors and internal investment teams to ensure fiscal health and regulatory adherence. Through meticulous management of fund-level financials, Mayer provides the necessary data to inform strategic decision-making and long-term capital allocation for the firm.

    Joanne Iannacchino - Chief Financial Officer, -Residence

    Joanne Iannacchino, the Chief Financial Officer, -Residence at Insight Partners, manages the financial operations and strategic budgeting for the firm's internal business units. Overseeing the firm's corporate financial health, the Chief Financial Officer, -Residence ensures that internal resources support the firm's mission of scaling software and technology companies. This role involves monitoring cash flow, managing corporate expenses, and overseeing financial planning to ensure long-term sustainability. By providing financial guidance to the leadership team, Joanne Iannacchino facilitates informed decision-making regarding firm growth and operational investments. Iannacchino drives the development of financial policies that promote efficiency and accountability across the organization. The Chief Financial Officer, -Residence coordinates with other C-suite leaders to align corporate financial goals with the firm's broader investment strategy. Through diligent financial management, Iannacchino ensures that the firm remains well-positioned to support its portfolio companies through various market cycles.

    Ian Sandler - Chief Operating Officer

    Ian Sandler, the Chief Operating Officer at Insight Partners, manages the firm's internal operational infrastructure and organizational efficiency. Overseeing the execution of firm-wide initiatives, the Chief Operating Officer ensures that internal processes align with the strategic goals of the investment teams. This role involves optimizing resource allocation and streamlining administrative functions to support the firm's global operations. By implementing scalable systems, Ian Sandler enhances the firm's ability to provide hands-on operational support to portfolio companies. Sandler drives the integration of best practices across departments, fostering a culture of high performance and operational excellence. The Chief Operating Officer coordinates with other senior leaders to maintain the firm's competitive edge in the private equity landscape. Through rigorous oversight of internal workflows, Sandler ensures that the firm remains agile and responsive to the evolving needs of the technology investment market.

    Wes Rosenberg - Residence Vice President & Chief Technology Officer

    Wes Rosenberg, the Residence Vice President & Chief Technology Officer at Insight Partners, architects the firm's internal technology strategy and digital transformation initiatives. Overseeing the implementation of advanced software tools, the Residence Vice President & Chief Technology Officer ensures that the firm leverages data-driven insights to identify and support high-growth technology companies. This role involves managing the firm's technical infrastructure and cybersecurity posture to protect sensitive investment data. By integrating cutting-edge technology into the firm's operational framework, Wes Rosenberg enhances the efficiency of the investment process. Rosenberg drives the adoption of scalable platforms that facilitate collaboration between the firm and its portfolio companies. The Residence Vice President & Chief Technology Officer collaborates with the broader leadership team to align technical capabilities with the firm's investment objectives. Through continuous innovation, Rosenberg ensures that the firm maintains a technological advantage in the competitive venture capital sector.

    Jeff Horing - Co-Founder & Managing Director

    Jeff Horing, the Co-Founder & Managing Director at Insight Partners, directs the firm's overarching investment strategy and long-term vision. Overseeing the identification of high-growth software and SaaS opportunities, the Co-Founder & Managing Director maintains deep relationships with founders to facilitate successful scaling from early stages to IPO. This leadership role involves evaluating complex market trends across global technology sectors to ensure portfolio resilience and superior returns. By guiding the investment committee, Jeff Horing shapes the firm's approach to capital deployment and strategic exits. Horing consistently drives the firm's commitment to supporting software innovation, ensuring that the investment portfolio remains at the forefront of the digital economy. Through active engagement with board members and executive teams, the Co-Founder & Managing Director secures the firm's position as a premier partner for high-growth technology companies worldwide.
    Jeff Horing

    Mike Hayes - Managing Director

    Mike Hayes, the Managing Director at Insight Partners, leads the sourcing and execution of investments in the enterprise software and SaaS sectors. Overseeing a portfolio of high-growth companies, the Managing Director provides strategic guidance to founders to accelerate market expansion and operational maturity. This role involves conducting deep-dive due diligence and negotiating complex deal structures to secure competitive investment opportunities. By leveraging industry expertise, Mike Hayes helps portfolio companies navigate the transition from early-stage development to successful IPOs. Hayes drives the firm's engagement with emerging technology markets, identifying trends that offer significant growth potential. The Managing Director collaborates with other senior leaders to refine the firm's investment thesis and portfolio management strategies. Through active board participation and mentorship, Hayes ensures that portfolio companies receive the necessary support to achieve scale and market leadership in the global technology landscape.

    Michael Triplett - Managing Director

    Michael Triplett, the Managing Director at Insight Partners, focuses on identifying and scaling innovative internet platforms and software businesses. Overseeing the firm's investment activities in high-growth sectors, the Managing Director works closely with management teams to optimize business models and drive revenue growth. This role involves evaluating market dynamics and competitive positioning to ensure that portfolio companies maintain a sustainable advantage. By providing hands-on operational support, Michael Triplett assists companies in navigating the complexities of rapid scaling and international expansion. Triplett drives the firm's commitment to fostering long-term value creation through strategic partnerships and board-level guidance. The Managing Director collaborates with the investment team to assess new opportunities and manage existing portfolio performance. Through deep industry knowledge and a focus on operational excellence, Triplett ensures that the firm's investments achieve significant market impact and deliver strong financial results for stakeholders.

    Explore Leadership Teams in Finance

    Frequently Asked Questions Regarding Insight Partners Top Executives and Leadership Team

    Who leads Insight Partners?
    Insight Partners is led by Stuart Mayer (Chief Financial Officer, Fund Accounting), along with executives such as Joanne Iannacchino (Chief Financial Officer, -Residence) and Ian Sandler (Chief Operating Officer).
    Who is part of Insight Partners’s executive team?
    The executive team of Insight Partners includes leaders such as Stuart Mayer (Chief Financial Officer, Fund Accounting), Joanne Iannacchino (Chief Financial Officer, -Residence), Ian Sandler (Chief Operating Officer) and other senior executives.
    How many executives does Insight Partners have?
    Insight Partners has 7 executives leading key business areas.
    What roles are included in Insight Partners’s leadership team?
    The leadership team of Insight Partners includes roles such as Chief Financial Officer, Fund Accounting, Chief Financial Officer, -Residence, Chief Operating Officer, Residence Vice President & Chief Technology Officer, Co-Founder & Managing Director.