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Hadron Energy (HDRN) nuclear officer reports 499,900 common shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Hadron Energy, Inc. Chief Nuclear Officer Ross T. Ridenoure filed an initial ownership report showing 499,900 shares of Common Stock held directly. These shares were received in exchange for 10,000 Hadron shares in connection with the merger of Hadron into a subsidiary of GigCapital7 Corp., under the exchange ratio in their business combination agreement.

Additional shares were acquired under a Restricted Stock Purchase Award Agreement dated February 13, 2026, which gives the company a right of repurchase that lapses over time. The repurchase right on one tenth of the shares lapsed at the merger closing on May 22, 2026, with further portions scheduled to lapse on August 29, 2026 and monthly thereafter as vesting continues.

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Insider Ridenoure Ross T
Role Chief Nuclear Officer
Type Security Shares Price Value
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 499,900 shares (Direct, null)
Footnotes (1)
  1. Received by the reporting person in exchange for 10,000 shares of Hadron Energy, Inc. ("Hadron") held by reporting person 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. These shares were acquired pursuant to a Restricted Stock Purchase Award Agreement dated February 13, 2026, and are subject to a right of repurchase by the Company which shall lapse in accordance with the vesting schedule. Effective as of the closing of the Merger, on May 22, 2026, the right of repurchase with respect to one tenth (1/10) of the shares lapsed. On August 29, 2026, the right of repurchase with respect to an additional one-fourth (1/4) shall lapse. Beginning the end of September 2026 and continuing at the end of each full month thereafter, the right of repurchase with respect to one-forty eighth (1/48) of the shares shall lapse until such time as the Company no longer has a right of repurchase as a result of the full vesting of the shares.
Common shares held 499,900 shares Common Stock directly owned after reported holdings
Shares exchanged in merger 10,000 shares Hadron shares exchanged for Hadron Energy, Inc. shares
Merger closing date May 22, 2026 Date when one tenth of repurchase right lapsed
Restricted stock agreement date February 13, 2026 Date of Restricted Stock Purchase Award Agreement
Next vesting milestone August 29, 2026 Additional one-fourth repurchase right scheduled to lapse
Initial vesting fraction 1/10 of shares Repurchase right lapsed at merger closing
Second vesting fraction 1/4 of shares Repurchase right scheduled to lapse on August 29, 2026
Ongoing vesting fraction 1/48 of shares Repurchase right lapses monthly from end of September 2026
Rule 16b-3 regulatory
"The acquisition of these shares is an exempt transaction under Rule 16b-3, promulgated by the U.S. Securities and Exchange"
Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.
Restricted Stock Purchase Award Agreement financial
"These shares were acquired pursuant to a Restricted Stock Purchase Award Agreement dated February 13, 2026"
right of repurchase financial
"and are subject to a right of repurchase by the Company which shall lapse in accordance with the vesting schedule"
business combination agreement regulatory
"pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company"
A business combination agreement is a detailed contract that lays out the terms for two companies to join together—covering price, how ownership will be split, the steps needed to close the deal, and what each side promises to do or avoid before closing. For investors it matters because the agreement determines potential changes in value, control, timing, and risk exposure—think of it like the playbook for a merger that shows who wins, who pays, and what could still derail the plan.
exchange ratio financial
"pursuant to the exchange ratio set forth in the business combination agreement between Hadron and the Company"
The exchange ratio is the number used to decide how many shares of one company you get for each share you own in another company during a merger or acquisition. It’s like a recipe that tells you how to swap shares fairly, ensuring both companies’ values are balanced. This ratio matters because it determines how ownership divides between the companies' shareholders.
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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Ridenoure Ross T

(Last)(First)(Middle)
C/O HADRON ENERGY, INC.
3 TWIN DOLPHIN DRIVE, STE 260

(Street)
REDWOOD CITY CALIFORNIA 94065

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
05/26/2026
3. Issuer Name and Ticker or Trading Symbol
Hadron Energy, Inc. [ HDRN ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Nuclear Officer
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock499,900(1)(2)D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Received by the reporting person in exchange for 10,000 shares of Hadron Energy, Inc. ("Hadron") held by reporting person 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. These shares were acquired pursuant to a Restricted Stock Purchase Award Agreement dated February 13, 2026, and are subject to a right of repurchase by the Company which shall lapse in accordance with the vesting schedule. Effective as of the closing of the Merger, on May 22, 2026, the right of repurchase with respect to one tenth (1/10) of the shares lapsed. On August 29, 2026, the right of repurchase with respect to an additional one-fourth (1/4) shall lapse. Beginning the end of September 2026 and continuing at the end of each full month thereafter, the right of repurchase with respect to one-forty eighth (1/48) of the shares shall lapse until such time as the Company no longer has a right of repurchase as a result of the full vesting of the shares.
/s/ Ross T. Ridenoure06/05/2026
** Signature of Reporting PersonDate
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 5 (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.
* Form 3: SEC 1473 (03-26)

FAQ

What did Hadron Energy (HDRN) report in Ross Ridenoure’s Form 3 filing?

Ross T. Ridenoure reported owning 499,900 Hadron Energy common shares. The Form 3 shows these shares are held directly and represent his initial reported ownership position as Chief Nuclear Officer following the Hadron merger and related equity awards.

How did Ross Ridenoure acquire the 499,900 Hadron Energy (HDRN) shares?

The shares were received through a merger exchange and a restricted stock purchase. He exchanged 10,000 Hadron shares in the merger with a GigCapital7 Corp. subsidiary and also received shares under a Restricted Stock Purchase Award Agreement.

What is notable about the vesting terms on Ross Ridenoure’s Hadron Energy (HDRN) shares?

The shares are subject to a company right of repurchase that lapses over time. One tenth lapsed at the May 22, 2026 merger closing, another quarter is scheduled to lapse on August 29, 2026, with additional fractions vesting monthly thereafter.

Is Ross Ridenoure’s acquisition of Hadron Energy (HDRN) shares exempt under Rule 16b-3?

Yes, the acquisition related to the merger is described as exempt under Rule 16b-3. The filing states that receiving these shares in exchange for prior Hadron holdings qualifies as an exempt transaction under this SEC rule.

Does Ross Ridenoure’s Form 3 show any stock options or other derivatives in Hadron Energy (HDRN)?

No derivative securities are listed in the Form 3 excerpt. The filing only reports common stock holdings and does not show any remaining options, warrants, or other derivative positions for Ridenoure.