STO Building Group Executive and Leadership Team

July, 2026

Leadership Overview

STO Building Group has 11 executives leading key functions including strategy, operations, finance, technology, human resources, and regional leadership.

Driven by a commitment to excellence, STO Building Group delivers comprehensive construction management, general contracting, and design-build services across North America, Europe, Asia, and the Middle East, shaping the built environment through specialized subsidiary operations.

Leadership Roles at STO Building Group

  • Chief Executive Officer - William Byrne
  • Chief Financial Officer - Brett Phillips
  • Chief Operating Officer - John White
  • President - Marc DePaul
  • President - Kenneth Innella
  • President - Neil Ascione
  • President - Eugene White
  • Chief Information Officer, Information Technology - Terrence Robbins
  • Chief Human Resources Officer - Claudia Healy
  • Chief Human Resources Officer - Ms. Claudia Healy
  • William Byrne - Chief Executive Officer

    William Byrne, the Chief Executive Officer at STO Building Group, directs the overarching corporate strategy and global expansion initiatives. Byrne oversees the integration of specialized subsidiary operations, ensuring alignment with the company's mission to provide comprehensive construction management, general contracting, and design-build services. This leadership role involves guiding the organization through diverse market conditions across North America, Europe, Asia, and the Middle East. Byrne's focus remains on driving sustainable growth and enhancing the company's reputation for delivering complex projects in commercial, healthcare, mission-critical, and institutional sectors. The Chief Executive Officer's strategic vision shapes the company's approach to innovation and operational efficiency, ensuring STO Building Group maintains its position as a global leader in the construction services industry. William Byrne's executive oversight ensures cohesive execution of the company's long-term objectives.

    Brett Phillips - Chief Financial Officer

    Brett Phillips, the Chief Financial Officer at STO Building Group, directs all financial planning, accounting, and reporting functions. Phillips manages the company's fiscal health, overseeing budgeting, forecasting, and capital allocation across global operations in North America, Europe, Asia, and the Middle East. This critical role involves ensuring financial compliance, managing investment strategies, and optimizing profitability for construction management, general contracting, and design-build services. The Chief Financial Officer's oversight extends to risk management and the financial structuring of complex projects within the commercial, healthcare, mission-critical, and institutional sectors. Brett Phillips's financial acumen supports STO Building Group's strategic growth and operational stability. By maintaining robust financial controls, Phillips enables the company to pursue new market opportunities and deliver consistent value to stakeholders.

    John White - Chief Operating Officer

    John White, the Chief Operating Officer at STO Building Group, manages the day-to-day operational execution across all global regions. White ensures the seamless integration and performance of the company's specialized subsidiaries, optimizing project delivery for construction management, general contracting, and design-build services. This executive function involves overseeing operational efficiency, resource allocation, and quality control throughout North America, Europe, Asia, and the Middle East. The Chief Operating Officer's responsibilities extend to implementing best practices in safety and project management, directly impacting the successful completion of commercial, healthcare, mission-critical, and institutional projects. John White's leadership drives operational excellence and supports the company's capacity to undertake large-scale, complex construction endeavors. By streamlining processes, White enhances the company's ability to leverage global resources for local project success.

    Marc DePaul - President

    Marc DePaul, the President at STO Building Group, drives strategic initiatives and operational oversight for key business segments. DePaul focuses on enhancing the company's market position through specialized construction management, general contracting, and design-build services across North America, Europe, Asia, and the Middle East. This leadership role involves fostering strong client relationships and ensuring the successful execution of projects within the commercial, healthcare, mission-critical, and institutional sectors. The President's responsibilities include leading cross-functional teams and promoting innovation within subsidiary operations. Marc DePaul's extensive experience guides STO Building Group's growth and operational excellence. By championing strategic partnerships, DePaul strengthens the company's ability to deliver exceptional results and expand its global reach.
    Marc DePaul

    Kenneth Innella - President

    Kenneth Innella, the President at STO Building Group, directs significant operational portfolios and strategic growth areas. Innella oversees the expansion and performance of specific business units, ensuring the delivery of high-quality construction management, general contracting, and design-build services across North America, Europe, Asia, and the Middle East. This executive position involves managing key client accounts and driving project success in commercial, healthcare, mission-critical, and institutional sectors. The President's focus is on optimizing resource utilization and implementing efficient operational strategies. Kenneth Innella's leadership contributes to STO Building Group's reputation for reliability and expertise. By driving operational improvements, Innella enhances the company's capacity to undertake and complete complex, large-scale construction projects effectively.
    Kenneth Innella

    Neil Ascione - President

    Neil Ascione, the President at STO Building Group, leads critical operational divisions and strategic market development. Ascione is responsible for overseeing the execution of construction management, general contracting, and design-build services, ensuring adherence to quality and safety standards across North America, Europe, Asia, and the Middle East. This executive function involves managing project lifecycles and fostering collaborative environments within subsidiary operations. The President's role emphasizes driving client satisfaction and achieving project objectives within the commercial, healthcare, mission-critical, and institutional sectors. Neil Ascione's strategic guidance supports STO Building Group's commitment to innovation and operational excellence. By focusing on efficient project delivery, Ascione strengthens the company's competitive advantage in the global construction market.

    Eugene White - President

    Eugene White, the President at STO Building Group, manages key strategic initiatives and operational performance across designated regions. White oversees the delivery of comprehensive construction management, general contracting, and design-build services, ensuring excellence in execution throughout North America, Europe, Asia, and the Middle East. This leadership position involves cultivating strong stakeholder relationships and driving the successful completion of projects in commercial, healthcare, mission-critical, and institutional sectors. The President's responsibilities include championing operational efficiencies and promoting best practices within the organization. Eugene White's leadership contributes significantly to STO Building Group's sustained success and market leadership. By focusing on strategic execution, White ensures the company consistently meets and exceeds client expectations.

    Terrence Robbins - Chief Information Officer, Information Technology

    Terrence Robbins, the Chief Information Officer, Information Technology at STO Building Group, leads the strategic development and implementation of all technology initiatives. Robbins oversees the company's IT infrastructure, cybersecurity measures, and digital transformation efforts across global operations in North America, Europe, Asia, and the Middle East. This executive position involves ensuring robust technological support for construction management, general contracting, and design-build services, enhancing operational efficiency and data security. The Chief Information Officer, Information Technology's responsibilities include managing enterprise software systems and driving innovation in digital tools for project execution within commercial, healthcare, mission-critical, and institutional sectors. Terrence Robbins's technological vision empowers STO Building Group with advanced capabilities. By optimizing IT systems, Robbins ensures seamless data flow and secure operations, supporting project teams worldwide.

    Claudia Healy - Chief Human Resources Officer

    Claudia Healy, the Chief Human Resources Officer at STO Building Group, directs all human capital strategies and organizational development initiatives. Healy oversees talent acquisition, employee relations, compensation, and benefits programs across global operations in North America, Europe, Asia, and the Middle East. This leadership function is crucial for supporting the company's construction management, general contracting, and design-build services by fostering a skilled and engaged workforce. The Chief Human Resources Officer's focus includes cultivating a strong corporate culture, implementing effective HR policies, and ensuring compliance with labor laws in all regions. Claudia Healy's commitment to employee well-being and professional growth strengthens STO Building Group's ability to attract and retain top talent. By championing HR best practices, Healy ensures the company's human resources are aligned with its strategic objectives.

    Ms. Claudia Healy - Chief Human Resources Officer

    Ms. Claudia Healy, the Chief Human Resources Officer at STO Building Group, spearheads the strategic direction of human capital management and organizational effectiveness. Healy guides talent development, performance management, and workforce planning across the company's extensive international presence in North America, Europe, Asia, and the Middle East. This executive role is vital for supporting the delivery of comprehensive construction management, general contracting, and design-build services by ensuring a high-performing and motivated employee base. The Chief Human Resources Officer's mandate includes fostering diversity and inclusion, managing employee engagement, and aligning HR practices with the company's global business objectives. Ms. Claudia Healy's leadership ensures that STO Building Group's workforce is equipped to meet the challenges of complex projects in commercial, healthcare, mission-critical, and institutional sectors. Through strategic HR initiatives, Healy reinforces the company's commitment to its people.

    Explore Leadership Teams in Construction Management

    Frequently Asked Questions Regarding STO Building Group Top Executives and Leadership Team

    Who leads STO Building Group?
    STO Building Group is led by William Byrne (Chief Executive Officer), along with executives such as Brett Phillips (Chief Financial Officer) and John White (Chief Operating Officer).
    Who is part of STO Building Group’s executive team?
    The executive team of STO Building Group includes leaders such as William Byrne (Chief Executive Officer), Brett Phillips (Chief Financial Officer), John White (Chief Operating Officer) and other senior executives.
    How many executives does STO Building Group have?
    STO Building Group has 10 executives leading key business areas.
    What roles are included in STO Building Group’s leadership team?
    The leadership team of STO Building Group includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President, President.