SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person* Katz Avi S (Last) (First) (Middle) C/O GIGACQUISITIONS7 CORP. 1731 EMBARCADERO RD, SUITE 200 (Street) PALO ALTO CALIFORNIA 94303 (City) (State) (Zip) UNITED STATES (Country)	2. Issuer Name and Ticker or Trading Symbol Hadron Energy, Inc. [ HDRN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) Chairman
	2a. Foreign Trading Symbol
	3. Date of Earliest Transaction (Month/Day/Year) 05/22/2026	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person
	4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/22/2026		A		87,500(1)	A	(2)	87,500	D
Common Stock	05/22/2026		A		87,500(3)	A	(2)	87,500	I	By Spouse, Dr. Raluca Dinu
Common Stock	05/22/2026		A		9,932,246(4)	A	(2)	9,932,246	I	By GigAcquisitions7 Corp.(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B ordinary shares	(2)	05/22/2026		M			9,932,246	05/22/2026	05/22/2026	Common Stock	9,932,246	(2)	0	I	GigAcquisitions7 Corp.(4)
Convertible Promissory Note	(5)	05/22/2026		J			29,300	05/22/2026	05/22/2026	Class A ordinary shares	29,300	(5)	0	I	GigAcquisitions7 Corp.(4)
Convertible Promissory Note	(5)	05/22/2026		J			29,300	05/22/2026	05/22/2026	Warrants	29,300	(5)	0	I	GigAcquisitions7 Corp.(4)

1. Name and Address of Reporting Person* Katz Avi S (Last) (First) (Middle) C/O GIGACQUISITIONS7 CORP. 1731 EMBARCADERO RD, SUITE 200 (Street) PALO ALTO CALIFORNIA 94303 (City) (State) (Zip) UNITED STATES (Country) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner X Officer (give title below) Other (specify below) Chairman

1. Name and Address of Reporting Person* GigAcquisitions7 Corp. (Last) (First) (Middle) C/O GIGACQUISITIONS7 CORP. 1731 EMBARCADERO RD, SUITE 200 (Street) PALO ALTO CALIFORNIA 94303 (City) (State) (Zip) UNITED STATES (Country) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Dinu Raluca (Last) (First) (Middle) C/O GIGACQUISITIONS7 CORP. 1731 EMBARCADERO RD, SUITE 200 (Street) PALO ALTO CALIFORNIA 94303 (City) (State) (Zip) UNITED STATES (Country) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Received by Dr. Avi S. Katz in exchange for 1,750.04 shares of Hadron Energy, Inc. ("Hadron") held by Dr. Katz, in connection with the merger of Hadron into a subsidiary of GigCapital7 Corp. (the "Company") (the "Merger") pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company. The acquisition of these shares is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange pursuant to the Securities and Exchange Act of 1934, as amended.

2. The closing price of the Company's Common Stock on the effective date of the Merger was $5.16.

3. Received by Dr. Raluca Dinu in exchange for 1,750.04 shares of Hadron held by Dr. Dinu, in connection with the Merger of Hadron into a subsidiary of the Company pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company. The acquisition of these shares is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange pursuant to the Securities and Exchange Act of 1934, as amended.

4. The Common Stock are held directly by GigAcquisitions7 Corp. (the "Sponsor"). The shares held by the Sponsor are beneficially owned by Dr. Katz, the Issuer's Chairman of the Board of Directors, and Dr. Dinu, the Issuer's Director. Dr. Katz and Dr. Dinu are the members of the Sponsor, who both have the voting and dispositive power over the shares held by the Sponsor.

5. In connection with the closing of the Merger, the principal balance of the convertible promissory note was paid in full.

	/s/ Dr. Avi S. Katz, individually	05/27/2026
	/s/ Dr. Avi S. Katz, as managing member of GigAcquisitions7 Corp.	05/27/2026
	/s/ Dr. Raluca Dinu, individually	05/27/2026
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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* Form 4: SEC 1474 (03-26)