oxyGEN ERG Executive and Leadership Team

July, 2026

Leadership Overview

oxyGEN ERG has 8 executives leading key functions including strategy, operations, technology, marketing, and regional development.

Driven by a commitment to fostering professionalism and leadership excellence, oxyGEN ERG aims to bridge generational gaps through networking and collaboration, actively challenging age-based stereotypes in the workplace and society.

Leadership Roles at oxyGEN ERG

  • Co-Chief Executive Officer - Timothy Geraghty
  • Co-Chief Executive Officer - Thomas Hamrick
  • President - Tonie Martinez
  • Regional President (East) - Doti Butler
  • Chief of Staff - Karen Curtis-Beck
  • Chief Marketing Officer - Dylan Imbrogno
  • Chief Technology Officer - Anthony Merheb
  • Chief Operations Officer - John Leow
  • Timothy Geraghty - Co-Chief Executive Officer

    Timothy Geraghty, the Co-Chief Executive Officer at oxyGEN ERG, directs the overarching strategy and vision for the organization. Geraghty spearheads initiatives focused on enhancing professionalism and fostering self-development among AT&T employees. This leadership role involves guiding the organization's efforts to bridge generational gaps through innovative networking and collaboration platforms. Geraghty ensures the effective execution of flagship programs like Disrupt Tech and LEAD, which are designed to promote technological adoption and career advancement. By challenging age-based stereotypes, Timothy Geraghty cultivates an inclusive environment that empowers members of all ages to achieve leadership excellence and drive positive change within the company. The Co-Chief Executive Officer's strategic direction is crucial for maintaining the organization's impact and relevance.

    Thomas Hamrick - Co-Chief Executive Officer

    Thomas Hamrick, the Co-Chief Executive Officer at oxyGEN ERG, collaborates with Timothy Geraghty to define and execute the organization's strategic objectives. Hamrick focuses on cultivating a dynamic and inclusive community, emphasizing self-development and leadership excellence across AT&T. This executive position involves overseeing the strategic implementation of programs such as Time to Talk, which addresses critical mental health awareness initiatives. Hamrick drives the organization's mission to challenge age-based stereotypes, promoting a culture of mutual respect and understanding. By fostering collaboration and leveraging technology, Thomas Hamrick ensures that OXYGEN ERG effectively bridges generational divides. The Co-Chief Executive Officer's leadership is vital for igniting positive change and creating a supportive ecosystem for all members.

    Tonie Martinez - President

    Tonie Martinez, the President at oxyGEN ERG, provides high-level leadership and strategic direction for the organization's overall objectives. Martinez champions the mission of fostering professionalism, self-development, and leadership excellence among AT&T employees. This executive role involves guiding initiatives aimed at bridging generational gaps through enhanced networking and collaborative efforts. Tonie Martinez actively promotes programs like Disrupt Tech and Time to Talk, emphasizing their importance in technological advancement and mental health awareness. By challenging age-based stereotypes, Martinez cultivates an environment where members of all ages can thrive and contribute to positive change. The President's vision is instrumental in driving the organization's success and impact.

    Doti Butler - Regional President (East)

    Doti Butler, the Regional President (East) at oxyGEN ERG, leads and directs the organization's operations and strategic initiatives across the Eastern region. Butler focuses on implementing OXYGEN ERG's core mission of fostering professionalism, self-development, and leadership excellence within AT&T's eastern divisions. This executive responsibility includes driving engagement with flagship programs such as LEAD and Time to Talk, tailoring their delivery to meet regional needs. Doti Butler works to challenge age-based stereotypes and bridge generational gaps by fostering strong community ties and collaborative opportunities throughout the East. The Regional President (East)'s leadership ensures localized impact and supports the organization's broader goals of igniting positive change and creating supportive environments.

    Karen Curtis-Beck - Chief of Staff

    Karen Curtis-Beck, the Chief of Staff at oxyGEN ERG, provides critical operational and strategic support to the Co-Chief Executive Officers. Curtis-Beck manages the coordination of organizational initiatives, ensuring seamless execution of programs like Disrupt Tech and LEAD. This role involves streamlining internal processes and facilitating communication across various functional areas to enhance collaboration and efficiency. Karen Curtis-Beck oversees the strategic alignment of departmental efforts with the organization's core mission of fostering professionalism and leadership excellence. By managing key projects and driving operational improvements, Curtis-Beck ensures that OXYGEN ERG effectively challenges age-based stereotypes and bridges generational gaps. The Chief of Staff's oversight is essential for maintaining organizational momentum and achieving strategic goals.

    Dylan Imbrogno - Chief Marketing Officer

    Dylan Imbrogno, the Chief Marketing Officer at oxyGEN ERG, directs all marketing and communication strategies to amplify the organization's reach and impact. Imbrogno develops and implements campaigns that highlight OXYGEN ERG's commitment to professionalism, self-development, and leadership excellence within AT&T. This executive function involves promoting flagship programs such as Disrupt Tech, LEAD, and Time to Talk, emphasizing their benefits for technology adoption, career growth, and mental well-being. Dylan Imbrogno actively works to challenge age-based stereotypes through compelling storytelling and targeted outreach. By fostering a dynamic community and encouraging collaboration, Imbrogno ensures the organization's message resonates across all generational groups. The Chief Marketing Officer's efforts are key to igniting positive change and building a supportive environment.

    Anthony Merheb - Chief Technology Officer

    Anthony Merheb, the Chief Technology Officer at oxyGEN ERG, leads the technological strategy and infrastructure supporting the organization's mission. Merheb oversees the integration and advancement of technology within programs like Disrupt Tech, ensuring members have access to cutting-edge tools for self-development and collaboration. This executive role is pivotal in leveraging technology to bridge generational gaps and foster a dynamic, inclusive community at AT&T. Anthony Merheb ensures that technological solutions align with the organization's goals of promoting professionalism and leadership excellence. By driving innovation and managing the technical aspects of OXYGEN ERG's initiatives, Merheb plays a crucial part in challenging age-based stereotypes and creating a supportive environment. The Chief Technology Officer's expertise is fundamental to the organization's operational effectiveness.

    John Leow - Chief Operations Officer

    John Leow, the Chief Operations Officer at oxyGEN ERG, manages the day-to-day operational execution of the organization's strategic initiatives. Leow oversees the efficient delivery of programs such as LEAD and Time to Talk, ensuring they effectively support member development and well-being. This leadership position involves optimizing internal processes and resource allocation to foster a dynamic and inclusive community within AT&T. John Leow ensures operational alignment with the core values of professionalism and leadership excellence. By streamlining operations and facilitating seamless program delivery, Leow contributes significantly to challenging age-based stereotypes and bridging generational divides. The Chief Operations Officer's focus on efficiency and effectiveness is vital for the organization's sustained impact and growth.

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    Frequently Asked Questions Regarding oxyGEN ERG Top Executives and Leadership Team

    Who leads oxyGEN ERG?
    oxyGEN ERG is led by Timothy Geraghty (Co-Chief Executive Officer), along with executives such as Thomas Hamrick (Co-Chief Executive Officer) and Tonie Martinez (President).
    Who is part of oxyGEN ERG’s executive team?
    The executive team of oxyGEN ERG includes leaders such as Timothy Geraghty (Co-Chief Executive Officer), Thomas Hamrick (Co-Chief Executive Officer), Tonie Martinez (President) and other senior executives.
    How many executives does oxyGEN ERG have?
    oxyGEN ERG has 8 executives leading key business areas.
    What roles are included in oxyGEN ERG’s leadership team?
    The leadership team of oxyGEN ERG includes roles such as Co-Chief Executive Officer, Co-Chief Executive Officer, President, Regional President (East), Chief of Staff.