Mindshare Executive and Leadership Team

November, 2026

Leadership Overview

Mindshare has 10 executives leading key functions including strategy, media investment, operational management, financial oversight, and product technology.

Driven by a commitment to media innovation, Mindshare delivers comprehensive marketing services through a global network. The firm prioritizes data-driven investment strategies to maximize client impact across diverse international markets.

Leadership Roles at Mindshare

  • Chief Executive Officer - Maria Grivas
  • Chief Executive Officer & Co-Founder - Shane Martz
  • Chief Financial Officer - Ali Senar
  • Chief Technology Officer, Fractional & Product - David Gluzman
  • Managing Director - Theresa Chang
  • Managing Director - Peta Southcombe
  • Managing Director - Marisa Alfano-Maidman
  • Managing Director - Tom Russell
  • Managing Director - Andie Fox
  • Managing Director - Ayn Taylor
  • Maria Grivas - Chief Executive Officer

    Maria Grivas, the Chief Executive Officer at Mindshare, directs the overarching strategic vision for the global media agency. Grivas manages the integration of media investment services across international markets, ensuring alignment with the broader goals of GroupM. By overseeing the development of advanced marketing solutions, the Chief Executive Officer drives operational excellence and client growth. Maria Grivas maintains a focus on scaling agency capabilities to meet evolving digital demands. This leadership role involves constant collaboration with regional heads to refine service delivery models. Through the implementation of data-centric frameworks, Grivas optimizes media spend efficiency for a diverse portfolio of global brands. The Chief Executive Officer fosters a culture of innovation, positioning the agency as a leader in the competitive marketing services landscape while securing long-term commercial success for the organization.

    Shane Martz - Chief Executive Officer & Co-Founder

    Shane Martz, the Chief Executive Officer & Co-Founder at Mindshare, architects the foundational business principles that guide the agency. Martz focuses on long-term market positioning and the expansion of service offerings within the media investment sector. Overseeing the strategic direction of the firm, the Chief Executive Officer & Co-Founder ensures that core values remain central to all client engagements. Shane Martz evaluates emerging industry trends to maintain a competitive edge in global marketing services. This leadership role requires balancing immediate operational requirements with future-oriented growth initiatives. By cultivating strong relationships with key stakeholders, Martz strengthens the agency's market presence. The Chief Executive Officer & Co-Founder drives the development of proprietary tools that enhance media planning accuracy. Through consistent oversight of organizational health, Martz guarantees that the agency continues to deliver high-value results for clients worldwide.

    Ali Senar - Chief Financial Officer

    Ali Senar, the Chief Financial Officer at Mindshare, directs the financial strategy and fiscal operations of the agency. Senar manages the budgeting, forecasting, and financial reporting processes to ensure the long-term stability of the organization. By overseeing the financial health of the business, the Chief Financial Officer drives the allocation of capital toward high-growth initiatives. Ali Senar evaluates the profitability of client accounts and service lines to optimize resource distribution. This leadership role involves managing relationships with external auditors and internal stakeholders to maintain financial transparency. Through the implementation of robust financial controls, Senar mitigates risk and ensures compliance with corporate standards. The Chief Financial Officer collaborates with the executive team to align financial goals with the overall business strategy. By focusing on fiscal discipline, Senar supports the agency's mission to provide world-class marketing services while maintaining a strong financial foundation.

    David Gluzman - Chief Technology Officer, Fractional & Product

    David Gluzman, the Chief Technology Officer, Fractional & Product at Mindshare, architects the technological infrastructure that supports media planning and execution. Gluzman manages the development and integration of proprietary product tools that enhance campaign performance. By overseeing the technology roadmap, the Chief Technology Officer, Fractional & Product drives the adoption of advanced analytics and automation. David Gluzman evaluates emerging technologies to ensure the agency remains at the forefront of digital marketing innovation. This leadership role involves managing the collaboration between engineering teams and business units to deliver scalable solutions. Through the implementation of secure data management practices, Gluzman protects client information while enabling data-driven decision-making. The Chief Technology Officer, Fractional & Product collaborates with the executive team to align technology investments with business objectives. By focusing on product excellence, Gluzman ensures that the agency provides superior technological capabilities to all clients.

    Theresa Chang - Managing Director

    Theresa Chang, the Managing Director at Mindshare, oversees the execution of media strategies within specific regional markets. Chang manages the daily operations of client-facing teams, ensuring that marketing campaigns align with established performance metrics. By coordinating with cross-functional departments, the Managing Director drives the delivery of integrated media solutions. Theresa Chang monitors market shifts to adjust tactical approaches for maximum client impact. This leadership role involves managing resource allocation to support high-priority accounts. Through the application of analytical insights, Chang improves campaign effectiveness and client retention rates. The Managing Director facilitates communication between local teams and global leadership to ensure consistency in service quality. By prioritizing operational efficiency, Chang supports the agency's mission to provide superior marketing services. The Managing Director remains dedicated to achieving measurable growth for every client under management.

    Peta Southcombe - Managing Director

    Peta Southcombe, the Managing Director at Mindshare, leads the development of client-specific media investment strategies. Southcombe manages the implementation of complex marketing programs, ensuring that all deliverables meet rigorous quality standards. By overseeing the performance of dedicated account teams, the Managing Director drives the achievement of key business objectives. Peta Southcombe analyzes consumer behavior data to refine targeting precision for diverse campaigns. This leadership role involves managing the financial health of specific business units while maintaining high levels of client satisfaction. Through the optimization of internal workflows, Southcombe enhances the speed and accuracy of media planning. The Managing Director collaborates with technology partners to integrate new tools into existing service models. By focusing on sustainable growth, Southcombe ensures that the agency maintains a strong reputation for excellence in the global marketing services industry.

    Marisa Alfano-Maidman - Managing Director

    Marisa Alfano-Maidman, the Managing Director at Mindshare, directs the strategic planning and execution of large-scale media initiatives. Alfano-Maidman manages the alignment of creative and analytical resources to support client goals. By overseeing the performance of multi-disciplinary teams, the Managing Director drives the successful delivery of complex marketing projects. Marisa Alfano-Maidman evaluates the effectiveness of media channels to optimize budget allocation for maximum return on investment. This leadership role involves managing client expectations and fostering long-term partnerships through transparent communication. Through the implementation of best practices, Alfano-Maidman improves the consistency of service delivery across the region. The Managing Director monitors industry developments to adapt strategies to changing market conditions. By focusing on operational agility, Alfano-Maidman ensures that the agency remains a preferred partner for brands seeking high-impact media solutions in a rapidly evolving digital environment.

    Tom Russell - Managing Director

    Tom Russell, the Managing Director at Mindshare, leads the expansion of service capabilities within the media investment management arm. Russell manages the integration of new marketing technologies into existing client workflows. By overseeing the performance of specialized teams, the Managing Director drives the adoption of data-driven planning methodologies. Tom Russell evaluates the impact of media investments to ensure alignment with client business objectives. This leadership role involves managing the professional development of staff to maintain a high-performing workforce. Through the optimization of internal processes, Russell enhances the efficiency of campaign management. The Managing Director collaborates with other regional leaders to share insights and improve service standards globally. By focusing on innovation, Russell ensures that the agency provides cutting-edge solutions that address the unique challenges of modern marketing. The Managing Director remains committed to delivering superior results for all clients.

    Andie Fox - Managing Director

    Andie Fox, the Managing Director at Mindshare, oversees the strategic management of client portfolios within the media services division. Fox manages the coordination of media buying and planning activities to ensure optimal campaign performance. By overseeing the work of account managers, the Managing Director drives the achievement of client-specific growth targets. Andie Fox analyzes market trends to identify new opportunities for media investment. This leadership role involves managing the financial performance of the division while maintaining high standards of service quality. Through the implementation of collaborative planning tools, Fox improves the coordination between creative and media teams. The Managing Director monitors the competitive landscape to adjust strategies as necessary. By focusing on client-centric solutions, Fox ensures that the agency delivers consistent value. The Managing Director remains dedicated to fostering strong relationships and driving long-term success for the organization.

    Ayn Taylor - Managing Director

    Ayn Taylor, the Managing Director at Mindshare, directs the operational activities of the agency within key market segments. Taylor manages the execution of media strategies, ensuring that all campaigns are delivered on time and within budget. By overseeing the performance of client service teams, the Managing Director drives the achievement of high-level marketing objectives. Ayn Taylor evaluates the effectiveness of media placements to optimize campaign reach and engagement. This leadership role involves managing the allocation of resources to support diverse client needs. Through the application of data-driven insights, Taylor improves the precision of media targeting. The Managing Director collaborates with internal stakeholders to refine service offerings and enhance client value. By focusing on operational excellence, Taylor ensures that the agency maintains a competitive position in the market. The Managing Director remains committed to delivering high-quality results for all clients.

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    Frequently Asked Questions Regarding Mindshare Top Executives and Leadership Team

    Who leads Mindshare?
    Mindshare is led by Maria Grivas (Chief Executive Officer), along with executives such as Shane Martz (Chief Executive Officer & Co-Founder) and Ali Senar (Chief Financial Officer).
    Who is part of Mindshare’s executive team?
    The executive team of Mindshare includes leaders such as Maria Grivas (Chief Executive Officer), Shane Martz (Chief Executive Officer & Co-Founder), Ali Senar (Chief Financial Officer) and other senior executives.
    How many executives does Mindshare have?
    Mindshare has 10 executives leading key business areas.
    What roles are included in Mindshare’s leadership team?
    The leadership team of Mindshare includes roles such as Chief Executive Officer, Chief Executive Officer & Co-Founder, Chief Financial Officer, Chief Technology Officer, Fractional & Product, Managing Director.