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Chief Financial Officer < Back KEVIN SULLIVAN Chief Financial Officer Kevin Sullivan serves as Valiant’s Chief Financial Officer, leading the company’s global finance organization. Kevin has extensive experience in mergers and acquisitions, capital markets and implementing financial strategies. Prior to being named to this position, Kevin served as the Corporate Controller at Valiant. Prior to joining Valiant, Kevin served in a variety of financial leadership roles at PAE where he was instrumental in transforming the company from a $500M business into a $3B+ publicly traded entity. Before joining PAE, Kevin held multiple finance roles at Lockheed Martin. Kevin received his BA from Loyola University, and his MBA from the University of Maryland. Kevin and his family reside in the Washington, DC metropolitan area.

Valiant announced today that it has been awarded a $50.8M contract by the Defense Logistics Agency (DLA) to provide chemical management services (CMS) for DLA Distribution Corpus Christi, Texas, located on Naval Air Station Corpus Christi (NASCC), Texas, and the Corpus Christi Army Depot (CCAD) industrial maintenance complex. Valiant Awarded $50.8M Contract to Provide Chemical Management Services for DLA Corpus Christi 22 Aug 2023 HERNDON, Va., August 22, 2023 – Valiant announced today that it has been awarded a $50.8M contract by the Defense Logistics Agency (DLA) to provide chemical management services (CMS) for DLA Distribution Corpus Christi, Texas, located on Naval Air Station Corpus Christi (NASCC), Texas, and the Corpus Christi Army Depot (CCAD) industrial maintenance complex. The scope of this contract is to provide CMS support that includes third-party logistics (3PL), end-to-end supply chain functions and processes, and effective inventory management in support of DLA and CCAD's industrial maintenance mission. DLA Distribution Corpus Christi, Texas, is the primary wholesale distribution point for major components to support helicopter repair missions for the Department of Defense and Foreign Military Sales customers worldwide. Its mission is to receive, store, pack, preserve, issue, and arrange transportation for assigned supplies and equipment as directed by DLA and Service Inventory Control Point Item managers. “We are proud to continue our support of the DLA Distribution Corpus Christi and CCAD's industrial maintenance complex.” Peter Capwell, General Manager and SVP of Valiant’s Mission Support business unit, said, “Our experience in providing effective hazardous material management and CMS support services has enabled us to offer the proven performance, flexibility, and low-risk solutions required to effectively manage and execute this critical mission.” About Valiant Valiant empowers our customers’ most critical missions by training, equipping, protecting, sustaining, and supporting those who serve. Valiant’s 5,000 employees enable government departments and agencies, global peacekeepers, relief workers, and disaster response teams to complete their missions efficiently and effectively in some of the most complex environments worldwide. Valiant deploys expertise for customers in the areas of Training, Simulation, and Readiness; Critical Mission and Language Support; Advanced Logistics & Sustainment; Intelligence & Analysis Solutions; Global Contingency & Stability Operations; and Facility Modernization, Operations, and Maintenance. Valiant is based in Herndon, Va., and is a closely held corporation of GC Valiant LP, along with other shareholders. For more information, visit www.onevaliant.com , and follow Valiant on LinkedIn or Facebook . For media inquiries: Justin Garrison Sr. Director of Communications, Marketing & Strategy M: +1 864 607 5943 E: justin.garrison@onevaliant.com Previous All News Next

Latest News Company News & Insights Tuesday 3 February 2026 Valiant announced today the appointment of Mike Devoto, former Chief Executive Officer, to its Board of Directors. Mr. Devoto’s return to Valiant, where he previously served in a number of senior executive roles and led the Company with distinction and contributed significantly to its growth and success. Read More Monday 2 February 2026 Valiant announced today the appointment of Daniel Simms as Chief Executive Officer, effective February 2, 2026. “I am honored to lead Valiant,” said Mr. Simms. “I look forward to building on our strong foundation, supporting our customers’ missions, and continuing to invest in our people.” Read More Wednesday 5 November 2025 Valiant Government Services Awarded $8.6M Contract to Support the Winn Army Community Hospital, Fort Stewart GA for the U.S. Army Valiant announced today that is has been awarded a $8.6M task order by the U.S. Army Corps of Engineers expanding our support to the Operations and Maintenance Engineering Enhancement (OMEE) VII contract. Read More Wednesday 23 July 2025 Valiant Awarded $54.2M Contract to Provide Simulations and Training Support to U.S. Army at Joint Base Lewis-McChord Mission Training Complex. Valiant announced today that is has been awarded a 5-year, $54.2M contract by the U.S. Army to provide Simulations and Training Support Services for the Joint Base Lewis-McChord (JBLM) Mission Training Complex (MTC), Yakima Training Center, and other exercise locations. Read More Tuesday 22 July 2025 Valiant Government Services Awarded $10.1M Contract to Support the 88th Medical Group at Wright Patterson Air Force Base, Ohio for the U.S. Army Valiant announced today that is has been awarded a $10.1M task order by the U.S. Army Corps of Engineers expanding our support to the Operations and Maintenance Engineering Enhancement (OMEE) VII contract. Read More Monday 21 July 2025 Valiant Awarded $66.2M Contract to Provide Mission Readiness Services for the Defense Threat Reduction Agency Valiant announced today that it has been awarded a $66.2M contract by the Defense Threat Reduction Agency (DTRA) to provide uniquely tailored training and exercise support for Chemical, Biological, Radiological, Nuclear, and High-Yield Explosives (CBRNE) and Countering Weapons of Mass Destruction (CWMD). This award reaffirms Valiant’s commitment to enhancing U.S. Special Operations Forces mission readiness in response to CBRNE/CWMD threats. Read More Thursday 17 July 2025 Valiant Government Services Awarded $2.4M Contract to Support the Canadian Armed Forces for the NATO Support and Procurement Agency Valiant announced today that is has been awarded a $2.4M contract by the NATO Support and Procurement Agency (NSPA) to continue providing linguist, translation, and interpretation services for the Canadian Armed Forces (CAF) in the Joint Operational Area of the Middle East. Our linguists will translate and interpret written documents and verbal conversations between English and local dialects. Read More Monday 30 June 2025 U.S. Air Force awards Valiant Integrated Services $7.1M Contract to Support the Draughon Bombing and Electronic Attack Range System, Misawa Air Base, Japan. Valiant announced today that is has been awarded a $7.1M contract by the U.S. Air Force to provide Operations and Maintenance (O&M) Support Services for Misawa Air Base, Japan Draughon Bombing and Electronic Attack Range System. Read More Thursday 5 June 2025 Valiant/ALCA JV LLC Awarded $78M Contract to Provide Base Operations Support Services to U.S. Naval Support Activity Naples, Italy Valiant/ALCA JV LLC announces it has been awarded a $78M contract by the Naval Facilities Engineering Systems Command (NAVFAC) Atlantic to provide base operations support for the U.S. Naval Support Activity (NSA) Naples, Italy and its outlying areas. Read More Monday 31 March 2025 Valiant Integrated Services Awarded $73.3M Contract to Support the Korean Battle Simulation Center for the U.S. Army Valiant announced today that is has been awarded a $73.3M contract by the U.S. Army to provide Operations Support Services for the Korea Battle Simulation Center (KBSC). Read More Friday 14 March 2025 Valiant Awarded $408.7M Contract to Provide Mission Support Services to U.S. Army Joint Readiness Training Center Valiant today announced it has been awarded a $408.7M contract by the U.S. Army to provide Mission Support Services to the Army Joint Readiness Training Center (JRTC) at Fort Johnson, Louisiana. Read More Wednesday 18 September 2024 Valiant Awarded Contract to Provide Training and Logistics Support for Defense Threat Reduction Agency Valiant has secured a contract from the Defense Threat Reduction Agency (DTRA) to provide customized training and logistics support for Chemical, Biological, Radiological, Nuclear, and High-Yield Explosives (CBRNE) and Countering Weapons of Mass Destruction (CWMD). Read More Tuesday 10 September 2024 Valiant Awarded Contract to Provide Mission Readiness Services for the Defense Threat Reduction Agency Valiant announced today that it has been awarded a contract by the Defense Threat Reduction Agency (DTRA) to provide uniquely tailored Chemical, Biological, Radiological, Nuclear and High-Yield Explosives (CBRN) and Countering Weapons of Mass Destruction (CWMD) training and exercise support, reaffirming Valiant’s commitment to enhancing U.S. Special Operations Forces (SOF) mission readiness in response to CBRN/CWMD threats. Read More Wednesday 17 July 2024 U.S. Army Corps of Engineers Awards Valiant a Seat on $2.3B OMEE VII MATOC Valiant has been awarded a seat on the OMEE VIII MATOC, which has a total ordering capacity of $2.3B, to provide specialized services for Defense Health Agency medical facilities across the globe. Read More Thursday 11 January 2024 Valiant Awarded $118.5M Contract to Provide Simulator and Academic Instructor Pilots to Pacific Air Forces Valiant announced today that it has been awarded a $118.5M contract by the U.S. Air Force (USAF) to provide Simulator and Academic Instructor Pilots (SIM-IPs) to the Pacific Air Forces (PACAF), reaffirming Valiant’s commitment to enhancing USAF mission-readiness. Read More Thursday 9 November 2023 U.S. Army Corps of Engineers Awards Valiant $41M Contract to Continue Providing Facility Modernization, Operations, and Maintenance Services Valiant announced today that the U.S. Army Corps of Engineers has awarded the company a $41 million contract to provide facility modernization, operations, and maintenance services at Fort Liberty (formerly Fort Bragg), North Carolina. Read More Monday 6 November 2023 Valiant Awarded $11.3M Contract to Provide Advanced Small Arms Training to the U.S. Marine Corps Valiant announced today it has been awarded an $11.3M contract by the U.S. Marine Corps to provide advanced training and readiness services on the Advanced Small Arms Lethality Trainer (ASALT) task order. This is the fourth task order awarded to Valiant under the Marine Air-Ground Task Force (MAGTF) Training Support Services (MTSS) indefinite delivery/indefinite quanLty (IDIQ). Read More Tuesday 22 August 2023 Valiant Awarded $50.8M Contract to Provide Chemical Management Services for DLA Corpus Christi Valiant announced today that it has been awarded a $50.8M contract by the Defense Logistics Agency (DLA) to provide chemical management services (CMS) for DLA Distribution Corpus Christi, Texas, located on Naval Air Station Corpus Christi (NASCC), Texas, and the Corpus Christi Army Depot (CCAD) industrial maintenance complex. Read More Wednesday 9 August 2023 Defense Threat Reduction Agency Awards Valiant $18M Task Order to Provide Advance Cyber Support and Operations to Department of Defense Assessment Team Valiant announced today that it has been awarded an $18 million task order by the Defense Threat Reduction Agency (DTRA) to provide Advanced Cyber support and operations at Fort Belvoir, VA, and other locations. Read More Thursday 22 June 2023 Valiant Named to Newsweek’s List of the Top 100 Global Most Loved Workplaces for 2023 Newsweek has announced their annual rankings for the Top 100 Global Most Loved Workplaces® list, and Valiant is proud to share that the company is ranked #33. Read More Media Contact Stephanie Weist Chief Administrative Officer stephanie.weist@onevaliant.com

Chief Administrative Officer < Back STEPHANIE WEIST Chief Administrative Officer As Chief Administrative Officer at Valiant, Stephanie Weist leads the Global Enterprise Services organization, overseeing all functions related to Global Supply Chain, Accounts Payable, Payroll, and Information Technology. Prior to her current role, Stephanie served as Valiant’s Vice President of Financial Shared Services, designing and leading end-to-end global tools and standardizing processes across the enterprise. Stephanie’s career began in public accounting and corporate audit at Bowman & Company LLP and Holman Enterprises before transitioning to government contracting in 2005. Since then, Stephanie has held multiple leadership roles, most recently as VP of Global Supply Chain Management at Amentum, where she led critical CP/IT implementations functionally for AP, Expense, Procurement, and Contracts. Her extensive expertise spans project management, supply chain, operations, business development, organizational strategy, IT, solutions architecture, contract management, audit, compliance, and finance at PAE, Defense Support Services (DS2), and other global companies. Stephanie received her Bachelor of Science in Accounting from Rowan University and resides in New Jersey with her family.

Chief Executive Officer < Back SEAN MATTINGLY Chief Executive Officer Sean Mattingly serves as Chief Executive Officer of Valiant Integrated Services, a leading provider of mission-critical solutions for the U.S. government and its international partners. In this role, he is responsible for driving enterprise growth, shaping strategic initiatives, managing global operations, and executing business plans, while also spearheading the development of innovative technologies and capabilities. Sean brings more than three decades of senior leadership experience as an executive in the private sector and with the United States Marine Corps. Sean’s extensive experience ranges from operations management to strategic growth and customer engagement within the defense and services industry. Before joining Valiant, Sean served as the Senior Vice President of Operations at J&J Worldwide Services, where he was responsible for business units that focused on engineering, mission support, and building maintenance. Prior to his time at J&J, Sean spent more than a decade at Serco Inc. where he held multiple executive leadership positions of increasing responsibility, including Business Unit Vice President and Managing Director of Serco's Federal Government Business line. Sean's broad experience with day-to-day business operations, his familiarity with federal and state customers, and his proven success with growth strategy planning position him to lead Valiant into the future. Prior to entering the private sector, Sean served as a helicopter pilot in the U.S. Marine Corps. Sean received his master’s degree from the Marine Corps Command and Staff College and an undergraduate in business administration from Clayton State University. Sean and his family reside in Virginia.

55a02d6d-0667-489d-b5a2-e5237dd03c7c < Back STAN SOLOWAY Stan Soloway is President & CEO of Celero Strategies, LLC, a full-service strategic consultancy focused on the federal market. Prior to founding Celero Strategies, Mr. Soloway served for 15 years as the President & CEO of the Professional Services Council, the largest and most influential national association of government technology and professional services firms. While at PSC, Mr. Soloway was the industry’s leading voice, policy strategist and resource for both government and the private sector. During the second half of the Clinton Administration, Mr. Soloway served as the Deputy Undersecretary of Defense and was responsible for wide-ranging reforms to defense acquisition and technology policy and practices, and broader department-wide re-engineering. Mr. Soloway holds a Bachelor of Arts in Political Science from Denison University.

c84f54d8-ecf5-4372-ba16-aab03e8245cb < Back LARRY V. MCGILL Larry McGill joined Golden State Foods (GSF), one of the largest diversified suppliers to the foodservice industry, in 1998 as Managing Director of GSF-Egypt. Since joining GSF, Larry has played several significant roles in growing the company’s Food Processing business. After nearly four successful years in Egypt, he came to the states to act as Senior Director of Sales and Marketing for the Liquid Products Group at the GSF facility in City of Industry, California. He was later promoted to Vice President of Worldwide Sales and Marketing in 2002. In October of 2005, he moved to Conyers, Georgia, to serve as Chief Operating Officer and orchestrated a series of optimization efforts for GSF’s Liquid Products and Meat Products businesses. Larry was promoted to President, Food Processing Groups, at GSF in March 2010. Larry oversaw the Liquid Products division at GSF’s City of Industry facility, GSF’s Liquid Products facility in Conyers, GSF’s Conyers Meat Products Group and GSF’s International Groups in Egypt, China, Australia and New Zealand in 2013. Under Larry’s leadership, GSF has been honored with numerous customer awards and recognitions including: Supplier of the year awards for Yum! Brands, Zaxby’s, Popeyes, Chick-fil-A, along with multiple quality, teamwork and target awards for McDonald’s. Larry is currently the CEO of KanPak, a Golden State Foods Company, where the company is growing and thriving. KanPak has facilities in China, two plants in the United States, and a dispenser division in Connecticut. Before coming to GSF, Larry held various management positions, most notably Coca Cola in the Middle East. An Azle, Texas native, he earned a Bachelor of Science degree in History from Texas A&M Commerce and an MBA from Century University in Albuquerque, New Mexico. Larry currently resides in Duluth, Georgia, while his daughter and son are attending college. When time permits, he enjoys spending time with his family and all types of sports, including golf and baseball, as well as music.

8c41c082-cd92-4db2-94e0-42a3ad22950a < Back TINA DOLPH Tina Dolph is president and CEO of Siemens Government Technologies (SGT), Inc., a leading integrator of Siemens’ innovative products, technologies, software and services to address U.S. government customer imperatives in the areas of energy generation and resiliency, smart infrastructure modernization, and software-driven optimization of maintenance, sustainment and production activities across government and its supplier base. An accomplished executive leader with more than two decades of government industry experience, Ms. Dolph began her career with GE Aerospace in the early 1990’s. She has held wide-ranging operational and functional roles at leading federal contractors including Lockheed Martin, PAE and ASRC Federal. Most recently, she served as Chief Strategy Officer at CRDF Global, a non-profit focused on promoting global safety, security and stability through science and innovation. Known as a collaborative leader, Ms. Dolph has often led large, diverse teams through complex transitions. She was instrumental in Lockheed Martin’s integration of and subsequent divestiture of PAE, Inc., where she served in executive leadership positions culminating as Executive Vice President, Company Operations for a $2 billion enterprise. During her tenure at PAE, she also served as COO, and, led the Global Stability and Development Division where she had full profit and loss responsibility for the $600 million business unit with 3,000 employees serving the Departments of State and Defense, the United Nations and commercial clients across the globe. She led the integration of the Applied Technologies Division of CSC with PAE, which represented revenue of over $400 million and an employee population of over 5,000, with 38 collective bargaining agreements across the U.S. Ms. Dolph has earned recognition for her achievements in the government marketplace, having been named to Washington Executive’s “Top 25 Execs to Watch in 2019”, is a three-time recipient of the Wash100 award from Executive Mosaic and was recently named a Top 100 Tech Executive by the Northern Virginia Technology Council. She serves on the Northern Virginia Technology Council Board of Directors and the Board Council for the post-9/11 veteran and military family serving national nonprofit Hope for the Warriors. Ms. Dolph earned her B.S. in Business Administration from Le Moyne College and has an MBA from Rensselaer Polytechnic Institute.

a20f2828-d3c2-4108-953f-09125956faac < Back LEO A. BROOKS Leo A. Brooks, Jr. is a retired Brigadier General in the United States Army, as well as a retired senior executive with The Boeing Company. Brooks’ last position with The Boeing Company was Vice President, Enterprise Subsidiary Integration, Government Operations in Washington, D.C. where he was responsible for optimizing enterprise integration of Boeing subsidiaries, joint ventures, and investment partners. Prior to this, he was Vice President of Defense, Space and Security, liaising with the Pentagon, NASA, and the Department of Homeland Security, and Vice President of Army Systems. Prior to Boeing, Brooks served in the U.S. Army for 27 years, commanding units including a Brigade in the 82nd Airborne Division and serving as Deputy Commanding General of 1st Armored Division in Germany, Commandant of Cadets at the United States Military Academy, and Vice Director of the Army Staff, Office of the Chief of Staff, in the Pentagon. Brooks holds a Bachelor of Science degree from the United States Military Academy and a Masters in Public Administration from the University of Oklahoma. He is a Senior Fellow of the Syracuse University, Maxwell School of Government, National Security Studies Program, and was awarded an Honorary Doctorate of Laws from the New England School of Law-Boston. Brooks is currently on the Board of Directors of the District of Columbia College Access Program and America’s Public Television Stations, as well as the Chairman of the Awards Committee on the Advisory Board of the Association of the U.S. Army and a member of the Council on Foreign Relations. Brooks has received numerous awards, notably the Army’s Distinguished Service Medal in 2006, the Freedom Team Salute Award for outstanding service to the nation by the Secretary of the Army in 2007, the Black Engineer of the Year 2009 Military Leadership Stars & Stripes Award, later being inducted into the Hall of Fame in 2014, and the Black Engineer of the Year 2019 BEYA Career Achievement in Industry Award.

568a6a2f-f715-4873-a24d-f5d58686936e < Back CHARLES M. LAFOLLETTE Mr. Charles M. LaFollette, also known as Mac, is the founder of the GC Companies (‘GCC’) which makes control-based private equity investments on behalf of a growing number of ultra-high net worth families and large endowments/foundations. Since its inception, GCC has made seven platform investments in a broad range of industries and with operations in the U.S., Europe, the Middle East, and Asia. More recently, GCC has concentrated its efforts on investments in the government contracting space. GCC owns 99+% (and Mac is the Chairman) of Valiant Integrated Services (https://www.onevaliant.com ); a $725+M in sales defense services contractor based in Herndon, Virginia that provides services to the U.S. Department of Defense, the Defense Logistics Agency, INSCOM, and other agencies within the defense complex. Mac founded Valiant with management in 2017. GCC owns 85% (and Mac is the Chairman) of AVANTech (https://avantechllc.com ), a leading provider of nuclear wastewater remediation services to the U.S. Department of Energy and nuclear power facilities in the U.S. and overseas. Mac lives in New York City with his wife and two sons. He is a graduate of Harvard College and Harvard Business School.