# EDGAR Filing Document

**Accession Number:** 0001430575
**File Stem:** 0001451693-26-000012
**Filing Date:** 2026-5
**Character Count:** 11047
**Document Hash:** e897cd6a9c2ce5d3058f5ba48efd2519
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001451693-26-000012.hdr.sgml**: 20260527

**ACCESSION NUMBER**: 0001451693-26-000012

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260522

**FILED AS OF DATE**: 20260527

**DATE AS OF CHANGE**: 20260527

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Dinu Raluca
- **CENTRAL INDEX KEY:** 0001430575

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42262
- **FILM NUMBER:** 261028244

**MAIL ADDRESS:**
- **STREET 1:** C/O GIGCAPITAL2, INC.
- **STREET 2:** 2479 E. BAYSHORE RD., SUITE 200
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94303
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Katz Avi S
- **CENTRAL INDEX KEY:** 0001451693

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42262
- **FILM NUMBER:** 261028246

**MAIL ADDRESS:**
- **STREET 1:** C/O GIGCAPITAL, INC.
- **STREET 2:** 3000 EL CAMINO REAL, BLDG 4, SUITE 232
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94306
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GigAcquisitions7 Corp.
- **CENTRAL INDEX KEY:** 0002023728

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42262
- **FILM NUMBER:** 261028245

**BUSINESS ADDRESS:**
- **STREET 1:** 1731 EMBARCADERO RD., SUITE 200
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94303
- **BUSINESS PHONE:** 650.276.7040

**MAIL ADDRESS:**
- **STREET 1:** 1731 EMBARCADERO RD., SUITE 200
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94303
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hadron Energy, Inc.
- **CENTRAL INDEX KEY:** 0002023730
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 334336458
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 3 TWIN DOLPHIN DRIVE, STE 260
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94065
- **BUSINESS PHONE:** 650-395-0050

**MAIL ADDRESS:**
- **STREET 1:** 3 TWIN DOLPHIN DRIVE, STE 260
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94065

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GigCapital7 Corp.
- **DATE OF NAME CHANGE:** 20240516

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GigAcquisitions7 Corp.<br><sub>(Last) (First) (Middle)</sub><br>C/O GIGACQUISITIONS7 CORP.<br>1731 EMBARCADERO RD, SUITE 200<br><sub>(Street)</sub><br>PALO ALTO, CA 94303<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-22 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Hadron Energy, Inc. [ HDRN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

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

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-05-22 |  | A |  | 87500<sup>(1)</sup> | A | <sup>(2)</sup> | 87500 | D |  |
| Common Stock | 2026-05-22 |  | A |  | 87500<sup>(3)</sup> | A | <sup>(2)</sup> | 87500 | I | By Spouse, Dr. Raluca Dinu |
| Common Stock | 2026-05-22 |  | A |  | 9932246<sup>(4)</sup> | A | <sup>(2)</sup> | 9932246 | I | By GigAcquisitions7 Corp.<sup>(4)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B ordinary shares | <sup>(2)</sup> | 2026-05-22 |  | M |  |  | 9932246 | 2026-05-22 | 2026-05-22 | Common Stock | 9932246 | <sup>(2)</sup> | 0 | I | GigAcquisitions7 Corp.<sup>(4)</sup> |
| Convertible Promissory Note | <sup>(5)</sup> | 2026-05-22 |  | J |  |  | 29300 | 2026-05-22 | 2026-05-22 | Class A ordinary shares | 29300 | <sup>(5)</sup> | 0 | I | GigAcquisitions7 Corp.<sup>(4)</sup> |
| Convertible Promissory Note | <sup>(5)</sup> | 2026-05-22 |  | J |  |  | 29300 | 2026-05-22 | 2026-05-22 | Warrants | 29300 | <sup>(5)</sup> | 0 | I | GigAcquisitions7 Corp.<sup>(4)</sup> |

---

### Footnotes:

(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.

**Signature:** /s/ Dr. Avi S. Katz, individually  
**Date:** 2026-05-27

**Signature:** /s/ Dr. Avi S. Katz, as managing member of  GigAcquisitions7 Corp.  
**Date:** 2026-05-27

**Signature:** /s/ Dr. Raluca Dinu, individually  
**Date:** 2026-05-27

### Remarks:

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.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**