Company: GIGGU
Filing Date: 2025-09-29
Form Type: 425
Source: 0001193125-25-221783
Chunk: 238

Company: GigCapital7 Corp.
Filing Date: 2025-09-29
Form: 425
Chunk 238
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 john.maselli@us.dlapiper.com

if to the Sponsor, to:

GigAcquisitions7 Corp.

1731
Embarcadero Road, Suite 200

Palo Alto, CA 94303

Attention: Dr. Avi S. Katz, Chief Executive Officer

Email: ***

if to the Company,
to:

Hadron Energy, Inc.

3
Twin Dolphin Drive, STE 260

Redwood City, CA 94065

Attention: Samuel Gibson

Email:
***

with a copy to:

Duane
Morris LLP

901 New York Avenue N.W., Suite 700 East

Washington, DC 20001

Attention:
Andy Tucker

Email: ATucker@duanemorris.com

13. . This Agreement and the BCA constitute the entire agreement and supersede all prior agreements and understandings,
both written and oral, among the parties hereto with respect to the subject matter hereof and thereof.

7

14. . The Sponsor hereby agrees that its representations,
warranties and covenants set forth herein are solely for the benefit of GigCapital7 and the Company in accordance with and subject to the terms of this Agreement, and this Agreement is not intended to, and does not, confer upon any Person other than
the parties hereto any rights or remedies hereunder, including, without limitation, the right to rely upon the representations and warranties set forth herein, and the parties hereto hereby further agree that this Agreement may only be enforced
against, and any action that may be based upon, arise out of or relate to this Agreement, or the negotiation, execution or performance of this Agreement may only be made against, the Persons expressly named as parties hereto.

15. .

a. This Agreement shall be governed by, interpreted under, and construed in accordance with the internal laws of the State of Delaware
applicable to agreements made and to be performed within the State of Delaware, without giving effect to any choice-of-law provisions thereof that would compel the
application of the substantive laws of any other jurisdiction.

b. All legal actions and proceedings arising out of or relating to this
Agreement shall be heard and determined exclusively in any Delaware Chancery Court;provided, that if jurisdiction is not then available in the Delaware Chancery Court, then any such legal Action may be brought in any federal court located in
the State of Delaware or any other Delaware state court. The parties hereto hereby (x) irrevocably submit to the exclusive jurisdiction