Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 567

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 567
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3 until December 2023. Mr. Gibson holds a Bachelor of Science in Mechanical Engineering and a minor in Engineering Leadership from the University of Nebraska. He is a two-timeglobal engineering leader awarded by the American Society of Mechanical Engineers (ASME). We believe Mr. Gibson is highly qualified to serve on the Domesticated GigCapital7 Board due to the unique perspective and expertise he brings as Hadron’s Chief Executive Officer, combined with his industry experience and educational background in engineering. Mark Kresshas served as Hadron’s Chief Financial Officer since April 2025. Before this appointment, he worked for more than a decade as a consultant at Arden Advisory, a family office advisory firm. Prior to Arden Advisory, he spent ten years as a Portfolio Risk Manager in Equities at Guggenheim Investments. Mr. Kress earned his B.S. in Managerial Economics from the University of California, Davis, and his M.B.A. from UC Berkeley’s Haas School of Business. He also holds the Chartered Financial Analyst designation. Ross T. Ridenourehas served as Hadron’s Chief Nuclear Officer since May 2025. A three-time Chief Nuclear Officer and three time Senior Reactor Operator with more than 40 years of commercial nuclear-power experience, Mr. Ridenoure has led operations and regulatory programs for both U.S. and international nuclear facilities. Prior to joining Hadron, from January 2024 until April 2025, Mr. Ridenoure served as QA Director at Accelerant, and from January 2023 until November 2023, he served as a consultant for Excel Energy. From November 2020 until October 2023, he served as Expert Consultant at the International Atomic Energy Agency. From January 2013 until July 2018, Mr. Ridenoure served as Senior Vice President of Nuclear Licensing & Regulatory Affairs for the Barakah Nuclear Power Plant in the United Arab Emirates, where he delivered the 332

project’s first operating-license applications ahead of schedule and established the world’s first Nuclear English Standard for multi-cultural plant workforces. From December 2007 until December 2010, he was Chief Nuclear Officer at Southern California Edison’s San Onofre Nuclear Generating Station. Prior to that, from July 2002 until November 2007, he served as Chief Nuclear Officer at Omaha Public Power District’s Fort Calhoun Nuclear Station. He is a retired Navy Commander with 30 years of service. Mr. Ridenoure holds an M.B.A. from the