Company: GIGGU
Filing Date: 2025-12-01
Form Type: 425
Source: 0001193125-25-303168
Chunk: 0

Company: GigCapital7 Corp.
Filing Date: 2025-12-01
Form: 425
Chunk 0
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Filed by GigCapital7 Corp.

Pursuant to Rule 425 under the Securities Act of 1933

Commission File No.: 001-42262

Subject Company: GigCapital7 Corp.

Hadron Energy
Unveils Distinguished Board of Directors to Lead the Company Following the deSPAC with GigCapital7 Into Proposed $1.2B Public Listing

Figure 1: Hadron Energy’s Designated Nominees for its Seven-Member Board of Directors (BOD) Including

Ralph Hunter, Robert Lewis, Dr. Avi Katz, Samuel Gibson, Bryan Timm, Dr. Raluca Dinu, and Ambassador

Adrian Zuckerman From Left to Right

New
York, NY — Hadron Energy, Inc. (“Hadron”) proudly announces the designated nominees for its seven-member Board of Directors (BOD), a leadership body composed of some of the most accomplished figures in nuclear energy, public
policy, advanced technology, regulatory governance, and public-company operations. Designated ahead of Hadron’s proposed $1.2 billion public listing through its definitive business combination with GigCapital7 Corp. (Nasdaq: GIG), the BOD
brings together unmatched expertise essential for guiding America’s next generation of nuclear deployment.

This distinguished BOD represents a rare
concentration of experience: former U.S. diplomatic leadership, decades of NRC executive oversight, global nuclear project development, semiconductor and advanced-technology public-company building, Fortune 500 operational and financial governance,
and deep entrepreneurial execution within critical infrastructure markets. Collectively, these directors strengthen Hadron’s position as it advances the Halo Micro-Modular Reactor toward commercial deployment, supporting the surging energy
demands of data centers, industrial facilities, and national security installations.

The BOD of the future public Hadron will comprise of the following members that will serve on the various
BOD committees noted below:

Dr. Avi Katz – As an Independent Director, Executive Chairman of the BOD, and member of the Compensation and Nominating and Corporate Governance Committees

Founder and Managing Partner of GigCapital Global, a serial issuer of Private-to-Public Equity (PPE) companies, one of the most experienced technology and public-company builders in the sector, with more than 35 years
leading semiconductor and TMT innovation, and fourteen successful Nasdaq and NYSE listings. A Ph.D. in Materials Engineering, a former operating private and public company C-suite executive in various roles
with more than 25