Westcon-Comstor Executive and Leadership Team

August, 2026

Leadership Overview

Westcon-Comstor has 7 executives leading key functions including strategy, information technology, financial management, operational scaling, and global marketing.

Focused on delivering advanced networking and cybersecurity solutions, Westcon-Comstor drives digital transformation through value-added distribution services that empower partners to navigate complex technology landscapes across global markets.

Leadership Roles at Westcon-Comstor

  • Chief Executive Officer - David Grant
  • Chief Financial Officer - Catherine Mwololo
  • Chief Operating Officer & Group Chief Financial Officer - Callum McGregor
  • Chief Operating Officer - Elmien Toit
  • President - Diver Donn
  • Chief Information Officer - Dwight Pitter
  • Chief Marketing Officer & Executive VP (APAC) - Patrick Aronson
  • David Grant - Chief Executive Officer

    David Grant, the Chief Executive Officer at Westcon-Comstor, directs the overarching corporate strategy and global vision for the organization. Grant oversees the expansion of networking and cybersecurity portfolios, ensuring alignment with evolving market demands. By fostering strong relationships with technology vendors, the Chief Executive Officer maintains a competitive edge in the distribution sector. This leadership role involves guiding the executive team toward sustainable growth and operational excellence across international territories. David Grant prioritizes the integration of cloud solutions into the core business model to enhance partner value. Through consistent focus on innovation and market agility, the Chief Executive Officer secures the long-term stability of the enterprise. Grant drives the company mission by championing high-performance standards and strategic investments that solidify the market position of the firm within the global technology ecosystem.
    David Grant

    Catherine Mwololo - Chief Financial Officer

    Catherine Mwololo, the Chief Financial Officer at Westcon-Comstor, manages the fiscal health and capital allocation strategies of the organization. Mwololo oversees financial reporting, budgeting, and risk management processes that underpin the global distribution business. By analyzing market trends and revenue streams, the Chief Financial Officer ensures that capital investments align with the long-term growth objectives of the company. This leadership role involves collaborating with the executive team to optimize profitability and maintain strong liquidity positions. Catherine Mwololo drives financial transparency and compliance across all international operations, supporting the stability of the firm. Through rigorous oversight of financial performance, the Chief Financial Officer enables the business to pursue strategic opportunities in networking and cloud solutions. Mwololo maintains a focus on cost efficiency and resource optimization, ensuring that the financial structure of the organization remains robust enough to withstand market volatility while supporting ongoing expansion efforts.

    Callum McGregor - Chief Operating Officer & Group Chief Financial Officer

    Callum McGregor, the Chief Operating Officer & Group Chief Financial Officer at Westcon-Comstor, integrates operational oversight with comprehensive financial governance. McGregor manages the intersection of fiscal planning and operational execution to drive enterprise-wide efficiency. Overseeing the alignment of financial resources with operational requirements, the Chief Operating Officer & Group Chief Financial Officer ensures that the company maintains a strong balance sheet while pursuing aggressive growth in cloud and networking markets. This leadership role involves monitoring global performance metrics to identify opportunities for cost reduction and revenue enhancement. Callum McGregor drives the strategic planning process, ensuring that financial targets are met through disciplined operational management. By balancing the demands of financial reporting with the complexities of global distribution, the Chief Operating Officer & Group Chief Financial Officer supports the long-term sustainability of the firm. McGregor maintains a focus on capital discipline and operational excellence to maximize value for all stakeholders.
    Callum McGregor

    Elmien Toit - Chief Operating Officer

    Elmien Toit, the Chief Operating Officer at Westcon-Comstor, directs internal scaling and operational efficiency across the organization. Toit manages the logistics and supply chain frameworks that enable the distribution of complex networking and cybersecurity products. Overseeing the execution of daily business processes, the Chief Operating Officer ensures that service delivery meets the high standards expected by global partners. This leadership role involves streamlining workflows to enhance productivity and reduce operational friction. Elmien Toit drives the implementation of best practices in inventory management and fulfillment, supporting the overall market impact of the company. By coordinating cross-functional teams, the Chief Operating Officer maintains operational consistency across diverse regional markets. Toit focuses on optimizing the internal infrastructure to support rapid growth, ensuring that the business remains agile and responsive to the changing needs of the technology distribution sector while maintaining high levels of service quality.
    Elmien Toit

    Diver Donn - President

    Diver Donn, the President at Westcon-Comstor, leads the execution of corporate initiatives and oversees the daily management of business units. Donn directs the implementation of strategic goals that support the distribution of networking, cybersecurity, and cloud solutions. By coordinating the efforts of various departments, the President ensures that the organization remains focused on delivering value-added services to partners. This leadership role involves fostering a culture of excellence and accountability across the global enterprise. Diver Donn drives the pursuit of operational targets and market expansion, ensuring that the company maintains its competitive advantage. Through active engagement with the executive team, the President facilitates the achievement of long-term business objectives. Donn focuses on optimizing organizational performance and ensuring that all business units operate in alignment with the core mission of the firm, ultimately supporting the growth and stability of the company in the global technology market.

    Dwight Pitter - Chief Information Officer

    Dwight Pitter, the Chief Information Officer at Westcon-Comstor, architects the digital infrastructure required to support global technology distribution. Pitter manages the implementation of advanced cloud platforms and cybersecurity frameworks that protect internal data and partner transactions. Overseeing the enterprise technology roadmap, the Chief Information Officer ensures that digital tools facilitate seamless supply chain operations. This leadership role involves optimizing data analytics to provide actionable insights for the broader organization. Dwight Pitter drives the modernization of IT systems to improve efficiency and scalability across all regional operations. By aligning technical capabilities with business objectives, the Chief Information Officer supports the delivery of value-added services to a diverse client base. Pitter maintains robust security protocols to mitigate risks in an increasingly complex digital environment, ensuring that the technological foundation remains resilient and capable of supporting future growth initiatives.
    Dwight Pitter

    Patrick Aronson - Chief Marketing Officer & Executive VP (APAC)

    Patrick Aronson, the Chief Marketing Officer & Executive VP (APAC) at Westcon-Comstor, directs the global brand strategy and regional market expansion efforts. Aronson oversees the development of marketing campaigns that highlight the value of networking and cybersecurity solutions to partners. By driving growth initiatives across the Asia-Pacific region, the Chief Marketing Officer & Executive VP (APAC) ensures that the company maintains a strong presence in key emerging markets. This leadership role involves crafting messaging that resonates with diverse audiences and strengthens the market position of the firm. Patrick Aronson drives the alignment of marketing activities with sales objectives to accelerate revenue growth. Through strategic engagement with regional partners, the Chief Marketing Officer & Executive VP (APAC) fosters brand loyalty and market penetration. Aronson focuses on leveraging data-driven insights to refine marketing tactics, ensuring that the company remains a preferred partner for technology distribution in the APAC region and beyond.
    Patrick Aronson

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    Frequently Asked Questions Regarding Westcon-Comstor Top Executives and Leadership Team

    Who leads Westcon-Comstor?
    Westcon-Comstor is led by David Grant (Chief Executive Officer), along with executives such as Catherine Mwololo (Chief Financial Officer) and Callum McGregor (Chief Operating Officer & Group Chief Financial Officer).
    Who is part of Westcon-Comstor’s executive team?
    The executive team of Westcon-Comstor includes leaders such as David Grant (Chief Executive Officer), Catherine Mwololo (Chief Financial Officer), Callum McGregor (Chief Operating Officer & Group Chief Financial Officer) and other senior executives.
    How many executives does Westcon-Comstor have?
    Westcon-Comstor has 7 executives leading key business areas.
    What roles are included in Westcon-Comstor’s leadership team?
    The leadership team of Westcon-Comstor includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer & Group Chief Financial Officer, Chief Operating Officer, President.