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Form 4 Hadron Energy, Inc. For: May 22 Filed by: Dinu Raluca

May 27, 2026 8:46 PM
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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
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 CA 94303
(City) (State) (Zip)
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
3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
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)
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
** Signature of Reporting Person Date
/s/ Dr. Avi S. Katz, as managing member of GigAcquisitions7 Corp. 05/27/2026
** Signature of Reporting Person Date
/s/ Dr. Raluca Dinu, individually 05/27/2026
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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