MATRIX SERVICE - Key Persons


Ben Stallings


Charles Tracy


Frank Capristo

Job Titles:
  • Member of the Leadership Team
  • Vice President of Turnaround & Plant Services
Frank Capristo serves as Vice President of Turnaround & Plant Services for Matrix Service. He joined Matrix in 2013, most recently holding the position of General Manager, Maintenance & Plant Services and before that, as Project Sponsor for the BP Cherry Point Refinery where he established a strong reputation for safety and client relationship leadership. Before joining Matrix Service, he held several leadership positions at Brinderon, Jacobs Engineering and Fluor Corporation. Mr. Capristo brings more than 25 years of extensive experience in the Energy Services industry including large capital EPC projects, complex turnarounds, facility maintenance, tank maintenance and repair, industrial cleaning and fabrication. Mr. Capristo earned his Bachelor of Science in Engineering & Construction Management from Arizona State University. He also holds an Associate in Arts degree in Art History from John Cabot International College, Rome.

John Hart

Job Titles:
  • Capital Construction

John Vick


Kevin Gaskins


Mark Fillman

Job Titles:
  • Member of the Leadership Team
  • Vice President of Operations
  • Vice President of Operations, AST & Specialty Vessels
Mark Fillman is Vice President of Operations, AST & Specialty Vessels, for Matrix Service. He joined Matrix in 1998 and has served in several roles within the storage products area throughout his career including Project Manager, Commercial Contracts Manager, Divisional Manager, and General Manager. Mr. Fillman has advanced the historical core AST business at Matrix and lead the development of the Company's cryogenic and specialty vessel storage product and service lines. In his current role, he is responsible for the operations of EPC services and projects for aboveground storage tanks and specialty vessels. In addition, he manages the fabrication services at the Company's Catoosa, OK facility. Mr. Fillman strives for safe, excellent execution which has led to hundreds of successfully completed projects. Mr. Fillman holds a Bachelor of Science in Civil Engineering and a Master of Science in Civil Engineering from Oklahoma State University. He is also a licensed Civil Engineer (P.E.) in the state of California.

Mary Mason


Shawn Payne - President

Job Titles:
  • Member of the Leadership Team
  • President
Shawn Payne is President of Matrix Service. Prior to his presidency, Mr. Payne served as Senior Vice President of Operations beginning in 2019. From 2016 to 2019, he served as Vice President of Business Services, then Senior Vice President of Finance and Business Services. Mr. Payne joined Matrix Service as a Division Manager in 2012 and established their Mining and Minerals division. Before joining Matrix, Mr. Payne held leadership positions in operations, finance, and project controls for Aker Solutions / Kvaerner and Jacobs. Mr. Payne holds a Bachelor of Science in Business Administration, Finance from the University of Arizona.

Vikas Moharir