Company: GIGGU
Filing Date: 2025-10-27
Form Type: 425
Source: 0001193125-25-251693
Chunk: 19

Company: GigCapital7 Corp.
Filing Date: 2025-10-27
Form: 425
Chunk 19
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.0) 20.0 15.0% PIPE Shareholders PF Enterprise Value $1,212.1 P. 20/22 ILLUSTRATIVE TRANSACTION OVERVIEW Source: (1) GigCapital7 cash-in-trust plus PIPE investment and Hadron cash less illustrative expenses. (2) Assumes 0% of GigCapital7 shareholders exercise redemption rights to receive cash from trust account at closing. (3) Based on expected redemption price at closing of the transaction as calculated in the Business Combination Agreement ﬁled on September 27, 2025

CONFIDENTIAL Primary Core Comparables Other Comparables Target MMR / SMR TECHNOLOGY Announced De-SPACs $26,879 $18,213 ? $13,249 (1) $2,337 $2,574 $1,875 $1,943 $1,000 $850 $148 $925 Oct- 25 Jul- 25 Sep- 25 May - 22 Sep- 25 May - 24 Sep- 25 May - 24 Sep- 25 Mar-25 Pre-Commercial NRC Approved Pre - Commercial Pre - Commercial Pre - Commercial Pre-Commercial LWR (Gen III+) LWR (Gen III+) HTGR (Gen IV) LM- MFFR (Gen IV) HTGR (Gen IV) IMSR (Gen IV) MIT, Berkeley, Fluor Corp Rolls- Royce Air Force / Switch University of Illinois Cameco Corporation University of Michigan Pre- money Rollover at De-SPAC Market Cap 10/13/25 Market Cap at IPO P. 21/22 ATTRACTIVE ENTRY POINT Source: FactSet Data as of 10/13/2025 (1) Market cap based on HOND stock price of $21.00 as of 10/13/2025 7.1x 7.8x 31.6x 17.4x Notable Strategic Reactor Collaborations Type: Stage

CONFIDENTIAL BUILDING THE FUTURE GRID — CLEAN, COMPACT, UNSTOPPABLE. THANK YOU!