Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 1064

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 1064
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 to GigCapital7’s Registration Statement on Form S-1/A filed with the SEC on August 26, 2024).                                                                                                                                                           |
| 4.4     |     | Warrant Agreement, dated August 28, 2024, by and between GigCapital7 Corp. and Continental Stock Transfer & Trust Company, LLC (incorporated by reference to Exhibit 4.1 to GigCapital7’s Current Report on Form 8-K filed with the SEC on September 3, 2024).                                                                                                         |
| 5.1*    |     | Opinion of DLA Piper LLP (US) as to the validity of the securities being registered.                                                                                                                                                                                                                                                                                   |
| 8.1*    |     | Opinion of Duane Morris LLP regarding the U.S. federal income tax matters discussed under the heading “Material U.S. Federal Income Tax Considerations of the Merger for Holders of Hadron Common Stock and Hadron Energy”                                                                                                                                             |
| 8.2     |     | Opinion of DLA Piper LLP (US) regarding Domestication and the U.S. federal income tax matters discussed under the heading “Material U.S. Federal Income Tax Considerations for Holders of GigCapital7 Securities and Domesticated GigCapital7 Securities - Tax Treatment of the Domestication” and “- U.S. Holders - Tax Effects of the Domestication to U.S. Holders” |

II-2

| Exhibit 
 10.1    
 10.2†   |     | Description                                                                                                                                                                                                                                                                                                                                                
 Sponsor Support Agreement, dated September 27, 2025, by and among GigCapital7 Corp., GigAcquisitions7 Corp. and Hadron Energy, Inc. (incorporated by reference to Exhibit 10.1 to GigCapital7’s Current Report on Form 8-K filed with the SEC on September 29, 2025 and included as Annex F to this proxy statement/ prospectus).                          
 Transaction Support Agreement, dated September 27, 2025, by and among GigCapital7 Corp., Hadron Energy, Inc., and certain stockholders of Hadron Energy, Inc. (incorporated by reference to Exhibit 10.2 to GigCapital7’s Current Report on Form 8-K filed with the SEC on September 29, 2025 and included as Annex G to this proxy statement/prospectus). |
|:--------|:----|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.3    |     |