MarketSource Executive and Leadership Team

August, 2026

Leadership Overview

MarketSource has 4 executives leading key functions including strategy, operations, and client engagement.

Focused on delivering high-impact sales solutions, MarketSource empowers brands through specialized field marketing and consumer engagement strategies that drive measurable growth and long-term loyalty across diverse industries.

Leadership Roles at MarketSource

  • President & Chief Executive Officer - Michael Ayesh
  • Chief Operating Officer - Jim Mediate
  • President - Liz Breitsameter
  • President - Jessica McNelley
  • Michael Ayesh - President & Chief Executive Officer

    Michael Ayesh, the President & Chief Executive Officer at MarketSource, directs the overarching corporate strategy and long-term vision for the organization. By aligning internal resources with evolving market demands, the President & Chief Executive Officer ensures the firm maintains a competitive edge in the marketing services sector. Michael Ayesh oversees the executive leadership team to foster innovation in sales and promotional solutions. This role involves constant evaluation of industry trends to optimize service delivery for national brands. Through rigorous performance monitoring, the President & Chief Executive Officer drives operational excellence and financial stability. The leadership approach emphasizes sustainable growth and the expansion of service capabilities across North American markets. By prioritizing client outcomes, the President & Chief Executive Officer secures the company's position as a leader in field marketing and event management, ultimately shaping the future trajectory of the entire organization.

    Jim Mediate - Chief Operating Officer

    Jim Mediate, the Chief Operating Officer at MarketSource, manages the daily execution of sales and promotional programs across the enterprise. Overseeing the infrastructure required for large-scale field marketing, the Chief Operating Officer ensures seamless integration of event management services for diverse client portfolios. Jim Mediate coordinates with department heads to streamline workflows and enhance service efficiency. This leadership position focuses on optimizing resource allocation to meet aggressive sales targets for national brands. By implementing robust operational frameworks, the Chief Operating Officer maintains high standards of consumer engagement and brand loyalty. The role involves managing complex logistics and regional operational requirements to support broad market reach. Through continuous process improvement, the Chief Operating Officer drives productivity and operational scalability. Jim Mediate remains dedicated to refining the internal systems that support the company's mission of delivering superior marketing solutions to every client partner.

    Liz Breitsameter - President

    Liz Breitsameter, the President at MarketSource, leads the strategic development of specialized client engagement initiatives. Focusing on the retail and consumer goods sectors, the President architects customized promotional solutions that elevate brand visibility. Liz Breitsameter collaborates with cross-functional teams to design and deploy field marketing campaigns that resonate with target audiences. This leadership role involves managing high-value client relationships and ensuring the delivery of measurable sales results. By analyzing consumer behavior data, the President refines engagement strategies to maximize return on investment for partners. The scope of responsibility includes overseeing regional market expansion and ensuring consistent service quality across all active campaigns. Through proactive leadership, the President drives innovation in promotional tactics and strengthens the company's market presence. Liz Breitsameter ensures that every initiative aligns with the broader corporate goal of fostering deep, lasting connections between brands and consumers.

    Jessica McNelley - President

    Jessica McNelley, the President at MarketSource, directs the growth and management of the company's event management and experiential marketing divisions. Focusing on the technology and service sectors, the President designs immersive brand experiences that drive consumer interaction and sales conversion. Jessica McNelley oversees the talent acquisition and training programs necessary to staff high-performing field teams. This leadership role involves coordinating with the executive team to ensure that experiential strategies support the company's overall revenue objectives. By leveraging data-driven insights, the President optimizes the impact of promotional events across diverse geographic regions. The responsibilities include managing large-scale project lifecycles and ensuring operational excellence in every client engagement. Through strategic oversight, the President enhances the firm's reputation for delivering creative and effective marketing solutions. Jessica McNelley consistently drives the development of new service models that adapt to the changing needs of the modern marketplace.
    Jessica McNelley

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    Frequently Asked Questions Regarding MarketSource Top Executives and Leadership Team

    Who leads MarketSource?
    MarketSource is led by Michael Ayesh (President & Chief Executive Officer), along with executives such as Jim Mediate (Chief Operating Officer) and Liz Breitsameter (President).
    Who is part of MarketSource’s executive team?
    The executive team of MarketSource includes leaders such as Michael Ayesh (President & Chief Executive Officer), Jim Mediate (Chief Operating Officer), Liz Breitsameter (President) and other senior executives.
    How many executives does MarketSource have?
    MarketSource has 4 executives leading key business areas.
    What roles are included in MarketSource’s leadership team?
    The leadership team of MarketSource includes roles such as President & Chief Executive Officer, Chief Operating Officer, President, President.