Allison Transmission Executive and Leadership Team

June, 2026

Leadership Overview

Allison Transmission has 7 executives leading key functions including strategy, finance, people operations, legal, and operations.

Driven by innovation, Allison Transmission is dedicated to advancing propulsion technology for medium- and heavy-duty commercial and defense vehicles globally, shaping the future of efficient and sustainable transportation.

Leadership Roles at Allison Transmission

  • Chair, President and Chief Executive Officer - David Graziosi
  • Chief Executive Officer & Chairman - David Graziosi
  • Chief Financial Officer - Scott Mell
  • Chief Financial Officer & Chief Operating Officer & Treasurer - G. Bohley
  • Executive Vice President, Chief Financial Officer and Treasurer - Allison Graziosi
  • Chief People Officer - Lorraine Parker-Clegg
  • Vice President, General Counsel & Secretary - Eric Scroggins
  • P and O - Enrique Gonzales
  • David Graziosi - Chair, President and Chief Executive Officer

    David Graziosi, the Chair, President and Chief Executive Officer at Allison Transmission, directs the company's overarching strategy and global operations. Overseeing all facets of the business, David Graziosi ensures alignment with Allison Transmission's mission to be the global leader in propulsion technology. This leadership role involves driving innovation in fully automatic transmissions and electrified propulsion systems for medium- and heavy-duty commercial and defense vehicles. By focusing on market expansion and technological advancement, David Graziosi directly impacts the company's growth and its position as the largest global manufacturer in its sector. Ultimately, Graziosi secures long-term financial stability and operational excellence across North America, Europe, Asia, Africa, and South America.
    David Graziosi

    David Graziosi - Chief Executive Officer & Chairman

    David Graziosi, the Chief Executive Officer & Chairman at Allison Transmission, guides the company's strategic vision and corporate governance. Leading the executive team, David Graziosi ensures the successful execution of Allison Transmission's global business objectives, including the design, manufacture, and distribution of advanced propulsion systems. This critical position involves fostering innovation in both traditional automatic transmissions and emerging electrified solutions for a diverse range of commercial and defense vehicles. By championing new technologies and market penetration strategies, David Graziosi drives the company's competitive edge and its commitment to sustainable transportation worldwide. Ultimately, Graziosi maintains Allison Transmission's status as a premier provider of propulsion technology across all major continents.
    David Graziosi

    Scott Mell - Chief Financial Officer

    Scott Mell, the Chief Financial Officer at Allison Transmission, oversees all financial operations and strategic fiscal planning. Managing the company's financial health, Scott Mell ensures robust capital allocation and drives profitability across Allison Transmission's global manufacturing and distribution networks. This role is pivotal in supporting the development and deployment of fully automatic transmissions and electrified propulsion systems for medium- and heavy-duty vehicles. By analyzing market trends and financial performance, Scott Mell provides critical insights that inform business decisions and investment strategies. Ultimately, Mell strengthens Allison Transmission's financial foundation, supporting its expansion into new markets and its commitment to delivering value to stakeholders worldwide.
    Scott Mell

    G. Bohley - Chief Financial Officer & Chief Operating Officer & Treasurer

    G. Bohley, the Chief Financial Officer & Chief Operating Officer & Treasurer at Allison Transmission, directs both the financial strategy and the operational execution of the company. Overseeing global manufacturing, supply chain logistics, and financial management, G. Bohley ensures seamless integration of Allison Transmission's product lines, including fully automatic transmissions and advanced electrified propulsion systems. This dual leadership role is essential for optimizing production efficiency and maintaining fiscal discipline across all business units. By driving operational excellence and prudent financial stewardship, G. Bohley directly contributes to Allison Transmission's market leadership and its ability to serve diverse sectors such as on-highway trucks, buses, and defense vehicles. Ultimately, Bohley ensures the company's financial strength and operational readiness to meet global demand.
    G. Bohley

    Allison Graziosi - Executive Vice President, Chief Financial Officer and Treasurer

    Allison Graziosi, the Executive Vice President, Chief Financial Officer and Treasurer at Allison Transmission, manages the company's comprehensive financial architecture and treasury functions. Directing financial planning, reporting, and capital management, Allison Graziosi ensures the fiscal integrity and strategic resource allocation for Allison Transmission's global operations. This executive position is crucial for supporting the innovation and production of fully automatic transmissions and electrified propulsion systems for commercial and defense applications. By overseeing financial strategies and treasury operations, Allison Graziosi enhances the company's financial resilience and its capacity for sustained growth. Ultimately, Graziosi reinforces Allison Transmission's commitment to financial excellence and operational efficiency across its worldwide network.

    Lorraine Parker-Clegg - Chief People Officer

    Lorraine Parker-Clegg, the Chief People Officer at Allison Transmission, leads all human capital strategies and organizational development initiatives. Overseeing talent acquisition, employee engagement, and leadership development, Lorraine Parker-Clegg cultivates a high-performance culture essential for Allison Transmission's innovation in propulsion technology. This role is critical in supporting the company's global workforce, which designs, manufactures, and distributes fully automatic transmissions and electrified propulsion systems. By fostering a supportive and dynamic work environment, Lorraine Parker-Clegg ensures that Allison Transmission attracts and retains top talent necessary for its continued success in the commercial and defense vehicle markets. Ultimately, Parker-Clegg drives the people-centric strategies that underpin the company's operational strength and future growth.

    Eric Scroggins - Vice President, General Counsel & Secretary

    Eric Scroggins, the Vice President, General Counsel & Secretary at Allison Transmission, directs the company's legal affairs and corporate governance. Overseeing all legal matters, Eric Scroggins ensures compliance with global regulations and manages risk across Allison Transmission's extensive operations, including the manufacturing of fully automatic transmissions and electrified propulsion systems. This vital role supports the company's strategic initiatives and protects its interests in diverse markets worldwide. By providing expert legal counsel, Eric Scroggins facilitates sound decision-making and upholds the integrity of corporate governance practices. Ultimately, Scroggins safeguards Allison Transmission's legal standing and supports its continued expansion in the commercial and defense sectors.

    Enrique Gonzales - P and O

    Enrique Gonzales, the P and O at Allison Transmission, manages key aspects of the company's people and organizational functions. Overseeing critical human resources initiatives, Enrique Gonzales supports the strategic development and operational effectiveness of Allison Transmission's global workforce. This role is integral to fostering a productive environment that drives innovation in the design and manufacturing of fully automatic transmissions and electrified propulsion systems. By focusing on talent management and organizational structure, Enrique Gonzales contributes to the company's ability to meet the demands of the commercial and defense vehicle industries. Ultimately, Gonzales enhances the human capital strategies that are fundamental to Allison Transmission's ongoing success and market presence.

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    Frequently Asked Questions Regarding Allison Transmission Top Executives and Leadership Team

    Who leads Allison Transmission?
    Allison Transmission is led by David Graziosi (Chair, President and Chief Executive Officer), along with executives such as David Graziosi (Chief Executive Officer & Chairman) and Scott Mell (Chief Financial Officer).
    Who is part of Allison Transmission’s executive team?
    The executive team of Allison Transmission includes leaders such as David Graziosi (Chair, President and Chief Executive Officer), David Graziosi (Chief Executive Officer & Chairman), Scott Mell (Chief Financial Officer) and other senior executives.
    How many executives does Allison Transmission have?
    Allison Transmission has 8 executives leading key business areas.
    What roles are included in Allison Transmission’s leadership team?
    The leadership team of Allison Transmission includes roles such as Chair, President and Chief Executive Officer, Chief Executive Officer & Chairman, Chief Financial Officer, Chief Financial Officer & Chief Operating Officer & Treasurer, Executive Vice President, Chief Financial Officer and Treasurer.