Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 815

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 815
---
 9(L).

<div align='center'>[Signature Pages Follow]

A-102</div>

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

| GIGCAPITAL7 CORP |     |                         |
| By:              |     |                         |
| Name:            |     | Dr. Avi S. Katz         |
| Title:           |     | Chief Executive Officer |

A-103

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

| By:                            |
| Name: Samuel Gibson            |
| Title: Chief Executive Officer |
| Address:                       |
| Email: ***                     |

A-104

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

| By:                            |
| Name: Mark Kress               |
| Title: Chief Financial Officer |
| Address:                       |
| Email: mkress@hadronenergy.com |

A-105

#### EXHIBIT AStockholders of Record – Number of SharesStockholder of RecordNumber of SharesSamuel Gibson900,000Mark Kress100,000A-106

### EXHIBIT B

### Business Combination Agreement
<div align='center'>**See Attached

A-107

EXHIBIT C

JOINDER TO TRANSACTION SUPPORT AGREEMENT**</div>

This JOINDER TO TRANSACTION SUPPORT AGREEMENT (this “Joinder”) is made and entered into as of [●], by and among each of the stockholders of Hadron Energy, Inc., a Delaware corporation (the “Company”), whose names appear on the signature pages of this Joinder (each, a “Stockholder” and, collectively, the “Stockholders”), and GigCapital7 Corp., a Cayman Islands exempted company (which shall transfer by way of continuation and domesticate as a Delaware corporation prior to Closing) (“GigCapital7”).

<div align='center'>**RECITALS**</div>

A. GigCapital7 and certain stockholders of the Company have entered into a Transaction Support Agreement dated September [●], 2025 (as amended, modified, supplemented, extended or restated from time to time, the “Agreement”) in regard to the support of the Merger and the other transactions contemplated by the BCA. Capitalized terms used herein but not otherwise defined shall have the meanings set forth in the Agreement.

B. Pursuant to the Agreement, certain