Company: GIGGU
Filing Date: 2025-12-01
Form Type: 425
Source: 0001193125-25-303168
Chunk: 2

Company: GigCapital7 Corp.
Filing Date: 2025-12-01
Form: 425
Chunk 2
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’s board.

Ralph Hunter – As an Independent BOD member, member of the Audit and Nominating and Corporate Governance Committees

Globally recognized nuclear-industry
executive with 35 years of leadership across SMR development, international nuclear projects, and major utility operations. He has served as CEO of Orion Nuclear, President of Constellation Generation Development, Executive Vice President of JExel
Nuclear, and a Board Director of Rolls-Royce SMR. He currently leads RC Nuclear Consultants, advising data centers, investors, and developers on licensing, siting, and new-nuclear deployment.

Samuel Gibson – As a Non-IndependentBOD member and Chief Executive Officer

Founder & CEO of Hadron and the visionary behind the Hadron Halo Micro-Modular Reactor. He leads the company’s technology development, licensing
strategy, commercialization efforts, and growth across the data-center, industrial, and defense sectors. Under his leadership, Hadron entered into a business combination agreement with GigCapital7 to deSPAC in a $1.2B business combination with
GigCapital7 and is advancing to become the first publicly traded light-water micro-modular reactor (MMR) company.

“Our Board represents the
strongest cross-section of relevant experiences for leading a company in the U.S. nuclear and clean-energy sector today,” said Samuel Gibson, Founder and Chief Executive Officer of Hadron. “Each director brings unmatched operational,
regulatory, government or financial expertise that will guide Hadron through its transition to the public markets and accelerate the commercial deployment of the Halo Micro-Modular Reactor across data centers, industrial facilities, and critical
infrastructure.”

Hadron’s designation of its BOD composition follows its recently announced $1.2 billion definitive business combination
agreement with GigCapital7 Corp. (Nasdaq: GIG), and supports the positioning of Hadron to become the world’s first publicly traded light-water MMR company. Achieving this milestone reinforces Hadron’s positioning at the forefront of the
U.S. nuclear industry.

About Hadron Energy, Inc.

Hadron is a pioneer in MMR technology. Designed to deliver 10 MW of power, Hadron’s MMR will be smaller, more cost-effective, and faster to deploy than
other proposed MMR power solutions. The revolutionary design of Hadron’s MMR allows its reactor core and containment shell to be transportable in a shipping container, providing a versatile deployment model for end users. Whether powering an
artificial