GigCapital7 (NASDAQ: GIG) adds $26.9M toward Hadron Energy merger

Rhea-AI Filing Summary

GigCapital7 Corp. has entered into Non-Redemption Agreements with certain public stockholders who agreed not to redeem an aggregate of 1,800,000 Class A shares in connection with its proposed business combination with Hadron Energy, Inc. These shares correspond to approximately $19.3 million remaining in GigCapital7’s trust account, with potential for additional agreements.

The press release notes these funds are being added to about $7.6 million previously provided to Hadron via a SAFE bridge note, for a total equity raise of roughly $26.9 million, which exceeds the Business Combination Agreement’s minimum cash condition of $20 million at closing. GigCapital7 also issued a proxy supplement updating shareholders on the Non-Redemption Agreements ahead of the extraordinary general meeting scheduled for May 7, 2026, with a redemption deadline of 5:00 p.m. Eastern Time on May 5, 2026.

Positive

• Minimum cash condition exceeded: Non-Redemption Agreements plus prior SAFE funding total about $26.9 million, surpassing the Business Combination Agreement’s stated $20 million minimum cash requirement for closing the Hadron Energy transaction.

Negative

• None.

Insights

SPAC and capital markets analyst

Non-redemption and bridge funding push GigCapital7 above its $20M SPAC cash hurdle.

GigCapital7 reports Non-Redemption Agreements covering 1,800,000 Class A shares, representing about $19.3 million that will remain in the trust and move to Hadron Energy at closing. This directly addresses redemption risk around the business combination.

The company highlights an additional $7.6 million already funded to Hadron via a SAFE bridge note, bringing the total equity raised to roughly $26.9 million. That total exceeds the $20 million minimum cash condition in the Business Combination Agreement, reducing closing risk tied to cash levels.

A supplemental proxy and detailed forward-looking risk disclosures emphasize remaining uncertainties: shareholder approval, regulatory clearances, and execution of Hadron’s micro modular reactor strategy. Future updates around the May 7, 2026 meeting and actual redemptions will clarify how much cash ultimately funds the combined company.

8-K Event Classification

4 items: 1.01, 7.01, 8.01, 9.01

4 items

Item 1.01 Entry into a Material Definitive Agreement Business

The company signed a significant contract such as a merger agreement, credit facility, or major partnership.

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Key Figures

Non-Redemption Shares: 1,800,000 shares Non-Redemption Trust Value: $19.3 million SAFE Bridge Note Funding: $7.6 million +5 more

8 metrics

Non-Redemption Shares 1,800,000 shares Class A ordinary shares subject to Non-Redemption Agreements

Non-Redemption Trust Value $19.3 million Approximate funds in trust tied to 1,800,000 non-redeemed shares

SAFE Bridge Note Funding $7.6 million Previously funded to Hadron Energy via SAFE bridge note

Total Equity Raised for Hadron $26.9 million Combined Non-Redemption and SAFE funding into Hadron Energy

Minimum Cash Condition $20 million Business Combination Agreement minimum cash at closing

Shareholder Meeting Date May 7, 2026 Extraordinary general meeting to approve Hadron business combination

Redemption Deadline May 5, 2026, 5:00 p.m. ET Cutoff for GigCapital7 public shareholder redemption requests

Ownership Cap per Public Stockholder 9.99% Maximum Ordinary Share percentage any Public Stockholder must hold

Key Terms

Non-Redemption Agreements, Business Combination Agreement, SAFE bridge note, micro modular reactor, +1 more

5 terms

Non-Redemption Agreements financial

"entered into separate agreements (each, a “Non-Redemption Agreement”, and together, the “Non-Redemption Agreements”)"

A non-redemption agreement is a contract in which a security holder agrees not to demand repayment, cashing out, or forced buyback of their shares or debt for a set period. Think of it like agreeing to leave money in a shared pot rather than asking for your portion back immediately; it preserves company cash flow and reduces near-term liabilities. Investors care because it affects a company’s short-term liquidity, the timing of potential payouts, and the predictability of future ownership or debt levels.

Business Combination Agreement financial

"approve the business combination contemplated by that certain Business Combination Agreement, dated as of September 27, 2025"

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.

SAFE bridge note financial

"approximately $7.6 million that have already been funded on a SAFE bridge note over the last few months"

A safe bridge note is a short-term financing agreement that works like an IOU that will convert into company shares at the next formal financing round instead of being repaid in cash. Investors provide money now and later receive equity on pre-agreed terms (often a discount or conversion cap), so it’s a quick way to fund operations until a full valuation is set. It matters to investors because its conversion mechanics determine future ownership, dilution and the effective price paid for shares.

micro modular reactor technical

"prospects within the ... sustainable industries. GigCapital7 ... combining with Hadron Energy, Inc., a pioneer in MMR technology"

A micro modular reactor is a compact, factory-built nuclear power unit designed to supply a small, steady amount of electricity and heat—think of it as a scaled-down, self-contained power station you could place where a large plant wouldn’t fit. For investors it matters because these reactors promise lower upfront construction risk and steady, low-carbon revenue streams, but they also carry regulatory, licensing and long-term waste and decommissioning uncertainties that affect cost and returns.

proxy statement/final prospectus regulatory

"joint definitive proxy statement/final prospectus (the “Proxy Statement”), filed on April 15, 2026"

Understanding 8-K Material Events →

false 0002023730 0002023730 2026-05-01 2026-05-01 0002023730 gig:UnitsEachConsistingOfOneClassAOrdinaryShareAndOneRedeemableWarrantMember 2026-05-01 2026-05-01 0002023730 gig:ClassAOrdinarySharesParValue0.0001PerShare2Member 2026-05-01 2026-05-01 0002023730 gig:RedeemableWarrantsEachFullWarrantExercisableForOneClassAOrdinaryShareAtAnExercisePriceOf11.50PerShare1Member 2026-05-01 2026-05-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): May 1, 2026

GigCapital7 Corp.

(Exact name of Registrant as specified in its charter)

Cayman Islands		001-42262		98-1790710
(State or other jurisdiction of incorporation or organization)		(Commission File Number)		(I.R.S. Employer Identification Number)

1731 Embarcadero Rd., Suite 200

Palo Alto, CA 94303

(Address of principal executive offices)

(650) 276-7040

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☒ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e 4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbols		Name of each exchange on which registered
Units, each consisting of one Class A ordinary share and one redeemable warrant		GIGGU		The Nasdaq Stock Market LLC
Class A ordinary shares, par value $0.0001 per share		GIG		The Nasdaq Stock Market LLC
Redeemable warrants, each full warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share		GIGGW		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Definitive Material Agreement

On May 1, 2026, GigCapital7 Corp. (the “GigCapital7”) entered into separate agreements (each, a “Non-Redemption Agreement”, and together, the “Non-Redemption Agreements”) with certain of the public stockholders of GigCapital7 (each, individually, a “Public Stockholder”, and together, the “Public Stockholders”) eligible to redeem their respective Class A ordinary shares, par value $0.0001 per share, of GigCapital7 (“Ordinary Shares”) at the upcoming extraordinary general meeting of the shareholders of GigCapital7 scheduled for May 7, 2026 (the “May 2026 Meeting”) to approve the business combination (the “Business Combination”) contemplated by that certain Business Combination Agreement, dated as of September 27, 2025, as amended by the First Amendment to Business Combination Agreement, dated as of December 12, 2025, and as further amended by the Second Amendment to Business Combination Agreement, dated as of April 16, 2026 (as may further be amended from time to time, the “Business Combination Agreement”), by and among GigCapital7, Hadron Energy, Inc., a Delaware Corporation (the “Company”), and MMR Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of GigCapital7 (“Merger Sub”). Capitalized terms used herein but not otherwise defined shall have the meanings ascribed to such terms in the Non-Redemption Agreements. Any reference herein to the “Non-Redemption Agreement” is to be treated as a reference to each Public Stockholder’s separate agreement and should be construed accordingly and any action taken by a Public Stockholder should be construed as an action under its own respective agreement.

Pursuant to the Non-Redemption Agreements, the Public Stockholders that have entered into the Non-Redemption Agreements have agreed not to exercise redemption rights with respect to their respective Ordinary Shares in connection with the Business Combination, and to waive all redemption rights with respect to the aggregate number of 1,800,000 Ordinary Shares (the “Non-Redemption Shares”), provided that no Public Stockholder is required to hold a number of Ordinary Shares representing in excess of 9.99% of the total number of Ordinary Shares outstanding. The Non-Redemption Shares held by the Public Stockholders will not be subject to any other transfer restrictions than those described in the Non-Redemption Agreements. The Public Stockholders will have no obligation to hold the Non-Redemption Shares beyond the Redemption Deadline, after which such shares will be freely tradeable without restrictive legends.

In the event that GigCapital7 enters one or more other non-redemption agreements in connection with the Business Combination (“Other Agreements”), GigCapital7 has agreed that the terms of such Other Agreements will not be materially more favorable to such other investors than the terms of the Non-Redemption Agreements are in respect of the Public Stockholders. In the event that another third party is afforded any such more favorable terms than the Public Stockholders, GigCapital7 has agreed to promptly inform the Public Stockholders of such more favorable terms in writing, and the Public Stockholders will then have the right to elect to have such more favorable terms included in each Public Stockholder’s respective Non-Redemption Agreement.

This Current Report provides a summary of the form of the Non-Redemption Agreement, the description of which does not purport to be complete and is qualified in its entirety by the terms and conditions of such agreement. A copy of the form of Non-Redemption Agreement is filed as Exhibit 10.1 to this Current Report and is incorporated by reference into this Current Report.

Item 7.01 Regulation FD Disclosure.

On May 1, 2026, GigCapital7 and the Company issued a joint press release announcing, among other things, entry into the Non-Redemption Agreements in connection with the Business Combination (the “Press Release”). A copy of the Press Release is attached to this Current Report as Exhibit 99.1.

The information in this Item 7.01 (including Exhibit 99.1) is being furnished pursuant to Item 7.01 and will not be deemed to be filed for purposes of Section 18 of the Securities Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor will it be deemed incorporated by reference in any filing of GigCapital7 under the Securities Act, or the Exchange Act, regardless of any general incorporation language in such filings.

Item 8.01 Other Events.

Supplement to the Proxy Statement

On April 15, 2026, GigCapital7 filed its proxy statement/prospectus (the “Proxy Statement”) for the solicitation of proxies in connection with the May 2026 Meeting to consider and vote on the Business Combination and other matters as described in the registration statement and a prospectus relating to the offer of the securities to be issued to the stockholders of the Company in connection with the Business Combination.

GigCapital7 has decided to supplement the Proxy Statement (the “Proxy Supplement”) to provide updated information about the Non-Redemption Agreements. There is no change to the date, location, the record date, redemption deadline or any of the other proposals to be acted upon at the May 2026 Meeting.

Stockholders who have previously submitted their proxies or otherwise voted and who do not want to change their vote need not take any action. Stockholders as of the April 15, 2026, record date can vote, even if they have subsequently sold their shares. Stockholders who wish to withdraw their previously submitted redemption requests may do so prior to the May 2026 Meeting by requesting that the transfer agent return such shares prior to the May 2026 Meeting.

A copy of the Proxy Supplement is filed herewith as Exhibit 99.2 and is incorporated herein by reference.

About GigCapital7

GigCapital7 is a blank check company, also commonly referred to as a special purpose acquisition company, or SPAC, formed for the purpose of entering into a merger, capital stock exchange, asset acquisition, stock purchase reorganization or similar business combination with one or more businesses or entities. While GigCapital7’s efforts to identify a target business may span many industries, the focus of GigCapital7’s search is for prospects within the technology, media, and telecommunications, artificial intelligence and machine learning, cybersecurity, medical technology and medical equipment, semiconductor and sustainable industries. GigCapital7 was sponsored by GigAcquisitions7, LLC, which was founded by GigFounders, LLC, each a member entity of GigCapital Global, and formed for the purpose of entering into a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization, or similar business combination with one or more businesses.

On September 27, 2025, GigCapital7 entered into the Business Combination Agreement with Merger Sub and the Company, pursuant to the terms of which, Merger Sub will merge with and into the Company, with the Company surviving as a wholly-owned subsidiary of GigCapital7, which will be renamed as Hadron Energy, Inc.

Additional Information and Where to Find It

In connection with the proposed Business Combination between GigCapital7 and the Company, GigCapital7 has filed the Proxy Statement, which includes a prospectus, with the SEC, and has commenced distribution of the Proxy Statement to GigCapital7’s shareholders in connection with GigCapital7’s solicitation of proxies for the shareholder vote in connection with the Business Combination and related transactions, and the other matters described in the Proxy Statement. GigCapital7 is mailing the Proxy Statement and other relevant documents to its shareholders as of April 15, 2026, the record date established for voting on the proposed Business Combination.

BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, GIGCAPITAL7’S SHAREHOLDERS AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION WITH GIGCAPITAL7’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO BE HELD TO APPROVE THE BUSINESS COMBINATION AGREEMENT, THE BUSINESS COMBINATION AND OTHER MATTERS AS DESCRIBED IN THE DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS BECAUSE THESE DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT GIGCAPITAL7, THE COMPANY AND THE PROPOSED TRANSACTIONS. Shareholders and other interested parties may obtain a copy of these documents, without charge, at the SEC’s website located at www.sec.gov or by directing a written request to GigCapital7 Corp., Attn: Corporate Secretary, 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303.

NEITHER THE SEC NOR ANY STATE SECURITIES REGULATORY AGENCY HAS APPROVED OR DISAPPROVED THE TRANSACTIONS DESCRIBED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE TRANSACTIONS OR ANY RELATED TRANSACTIONS OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS CURRENT REPORT. ANY REPRESENTATION TO THE CONTRARY CONSTITUTES A CRIMINAL OFFENSE.

Participants in the Solicitation

The Company, GigCapital7 and their respective directors, executive officers, management and employees, under SEC rules, may be deemed to be participants in a solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination and related transactions. Investors and shareholders may obtain more detailed information regarding the names, affiliations, and interests of GigCapital7’s directors and executive officers in its

filings with the SEC, including GigCapital7’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on March 6, 2026. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination is set forth in the Proxy Statement, along with information concerning the interests of the Company’s and GigCapital7’s participants in the solicitation. Such interests may in some cases be different from those of the Company’s or GigCapital7’s equity holders generally. Investors and security holders may obtain free copies of these documents as described above.

Forward-Looking Statements:

Certain statements included in this Current Report on Form 8-K and the exhibit hereto that are not historical facts are forward-looking statements for purposes of the “safe harbor” provisions under the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally are accompanied by words such as “may,” “could,” “would,” “should,” “expect,” “possible,” “potential,” “goal,” “opportunity,” “project,” “believe,” “future”, “designed,” “forecast,” “target,” “will,” “anticipate,” “estimate,” “continue,” “intend,” “plan,” “predict,” “seem,” “seek,” “outlook,” and, in each case, similar words and expressions, or their negative variations, and terminology that predict or indicate future events or trends or that are not statements of historical matters. Forward-looking statements generally relate to future events, including, without limitation, statements, estimates, forecasts or projections regarding the Company’s future manufacturing capacity and plant performance; market opportunity and market share; estimates and projections of adjacent energy sector opportunities; the Company’s projected commercialization costs and timeline; the Company’s ability to demonstrate scientific and engineering feasibility of its technologies; the Company’s ability to attract, retain and expand its future customer base; the Company’s ability to timely and effectively meet construction and development timelines and scale its production and manufacturing processes; the Company’s ability to develop products and services and bring them to market in a timely manner; the Company’s ability to compete successfully with energy products and solutions offered by other companies; the Company’s expectations concerning relationships with strategic partners, suppliers, governments, regulatory bodies and other third parties; the Company’s ability to maintain, protect, and enhance its intellectual property; future ventures or investments in companies or products, services, or technologies; the Company’s expectations regarding regulatory framework development; the potential for and timing of receipt of licenses and permits for current and future operations, including licenses to operate nuclear facilities from the U.S. Nuclear Regulatory Commission; the success of proposed projects for which the Company’s products would provide power, which is outside of the Company’s control; the safety profile of the Company’s technology; the execution and success of any definitive agreements related to partnerships and collaborations between the Company and third parties; the Company’s expectations with respect to future performance; GigCapital7’s and the Company’s respective industries, future events, the anticipated use of the investor presentation by the Company and GigCapital7, potential financing activities by the Company, including any contemplated private placement of SAFEs, potential non-deal roadshows, and possible PIPE financing discussions, the proposed transactions between GigCapital7 and the Company, the anticipated timing and benefits of the Business Combination, the entry into agreements related to the Business Combination, the consummation of the proposed Business Combination; the estimated or anticipated future results and benefits of the combined company following the proposed transactions, including the likelihood and ability of the parties to successfully consummate the proposed transactions, future opportunities for the combined company, GigCapital7’s or the Company’s future financial or operating performance, and other statements that are not historical facts. In addition, these forward-looking statements include, without limitation, statements regarding GigCapital7’s and the Company’s expectations with respect to future performance and anticipated financial impacts of the proposed private placements, the Business Combination and other transactions, the satisfaction of the closing conditions to the Business Combination and other transactions, and the timing of the completion of the Business Combination and other transactions. Such forward-looking statements are subject to risks, uncertainties (some of which are beyond the control of the Company and/or GigCapital7), and other factors which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by GigCapital7 and its management, and the Company and its management, as the case may be, are inherently uncertain. Factors that may cause actual results to differ materially from current expectations include, without limitation: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the proposed Business Combination or other definitive agreements in connection thereto; (2) the outcome of any legal proceedings that may be instituted against the Company, GigCapital7 or others following the announcement of the proposed Business Combination and any definitive agreements with respect thereto; (3) the

inability to successfully or timely consummate the Business Combination and related transactions, including due to the failure to obtain consents and approvals of the shareholders of GigCapital7; (4) the failure to obtain financing to complete the transactions or to satisfy other conditions to closing; delays or failures to obtain necessary regulatory approvals required to complete the transactions; (5) changes to the proposed structure of the transactions as a result of applicable laws, regulations or conditions; (6) the ability of GigCapital7 to meet applicable listing standards following the consummation of the Business Combination; (7) the risk that the Business Combination disrupts current plans and operations of the Company as a result of the announcement and consummation of the Business Combination; (8) projections, estimates and forecasts of revenue and other financial and performance metrics; (9) projections about industry trends and market opportunity; expectations relating to the demand for the Company’s micro modular reactor (“MMR”) technology; (10) the Company’s ability to scale and grow its business; (11) the cash position of the Company following closing of the Business Combination; (12) the risk that the transactions disrupt current plans and operations of the Company as a result of the announcement and consummation of the transactions; (13) the ability to recognize the anticipated benefits of the Business Combination, which may be affected by, among other things, competition, the ability of the Company to successfully commercialize its MMR, and the Company’s ability to source and maintain key relationships with management and key employees; (14) the ability of the combined company to grow and manage growth profitably, continue developing its properties, maintain relationships with customers and suppliers, and retain its management and key employees; (15) costs related to the transactions; (16) risks relating to significant legal, commercial, regulatory and technical uncertainty regarding the classification and management of nuclear energy resources, including evolving environmental standards, permitting requirements, and potential changes in applicable laws or regulations; changes in applicable laws and regulations; political and economic developments and market volatility; (17) the possibility that the Company and/or its related entities may be adversely affected by other economic, business, and/or competitive factors; (18) risks relating to the Company’s anticipated operations and business, including its focus on the development and commercialization of MMR technologies; (19) the risk that the Company does not ever enter into any definitive agreements in connection with commercialization of its technology; (20) the risk that the Company is pursuing an emerging market; (21) the amount of redemption requests made by the GigCapital7 public shareholders; (22) risks related to the future performance of the Company; (23) the potential need for financing for future operations; (24) financial, political and legal conditions; (25) increased competition in the energy industry; (26) limited supply of materials and supply chain disruptions; and (27) other risks and uncertainties set forth under “Risk Factors” and other documents filed, or to be filed, with the SEC by GigCapital7 and/or the Company, including the Registration Statement on Form S-4 that the Company and GigCapital7 filed in connection with the Business Combination, and GigCapital7’s other filings with the SEC, as well as any further risks and uncertainties contained in the Proxy Statement. In addition, there may be additional risks that neither GigCapital7 or the Company presently know, or that GigCapital7 or the Company currently believe are immaterial, that could also cause actual results to differ from those contained in the forward-looking statements. Nothing in this Current Report should be regarded as a representation by any person that the forward-looking statements set forth herein will be achieved or that any of the contemplated results of such forward-looking statements will be achieved. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. Except as may be required by law, neither GigCapital7 nor the Company undertakes any duty to update these forward-looking statements. The inclusion of any statement in this communication does not constitute an admission by GigCapital7, the Company, or any other person that the events or circumstances described in such statement are material.

No Offer or Solicitation

This Current Report will not constitute a solicitation of a proxy, consent or authorization with respect to any securities or in respect of the Business Combination. This Current Report will also not constitute an offer to sell or the solicitation of an offer to buy any securities, nor will there be any sale of securities in any states or jurisdictions in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities will be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act or an exemption therefrom.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

Exhibit		Description
10.1		Form of Non-Redemption Agreement
99.1		Press Release, dated May 1, 2026
99.2		Proxy Supplement, dated as of May 1, 2026
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: May 1, 2026				GIGCAPITAL7 CORP.
				By:		/s/ Dr. Avi Katz
				Name:		Dr. Avi Katz
				Title:		Chief Executive Officer

Exhibit 99.1

GigCapital7 Corp. Announces Non-Redemption Agreements Funding in the Approximate Amount of at Least $19.3 Million in Conjunction with the Anticipated Closing of the Business Combination with Hadron Energy, Inc.

NEW YORK — May 1, 2026 — GigCapital7 Corp. (Nasdaq: GIG) (“GigCapital7” or the “Company”) today announced that it has directly solicited and entered into non-redemption agreements (each a “Non-Redemption Agreement” and together the “Non-Redemption Agreements”) with a few public stockholders, pursuant to which such stockholders have agreed not to exercise redemption rights in connection with the proposed business combination between GigCapital7 and Hadron Energy, Inc. (“Hadron”) with respect to an aggregate of 1,800,000 Class A ordinary shares of the Company, representing approximately $19.3 million of the funds held in the Company’s trust account, and with the possibility for additional Non-Redemption Agreements, and that will be moved into the Hadron Energy balance sheet at the closing of the business combination These NRA funds are being added to approximately $7.6 million that have already been funded on a SAFE bridge note over the last few months to Hadron Energy, for a total equity raise by GigCapital7 into Hadron Energy of about $26.9 million, which far exceeds the Business Combination Agreement’s announced minimum cash condition on closing of $20 million.

The Non-Redemption Agreements were entered into in anticipation of the closing of the business combination contemplated by the Business Combination Agreement, dated as of September 27, 2025, as amended, by and among GigCapital7, Hadron Energy and MMR Merger Sub, Inc. The extraordinary general meeting of shareholders of GigCapital7 to approve the business combination is scheduled for May 7, 2026, with the deadline for submission of redemption requests set for 5:00 p.m., Eastern Time, on May 5, 2026.

Additional information regarding the Non-Redemption Agreement will be provided in a Current Report on Form 8-K to be filed by GigCapital7 with the U.S. Securities and Exchange Commission.

About Hadron Energy, Inc.

Hadron is a pioneer in MMR technology. Designed to deliver 10 MWe of continuous power, the Halo MMR is smaller, more cost-effective, and faster to deploy than other proposed nuclear power solutions. The reactor’s vessel, core, and containment shell are fully truck-transportable, enabling deployment across AI data centers, industrial hubs, remote communities, and infrastructure facilities where traditional power solutions cannot deliver. Hadron is advancing the Halo MMR through an integrated program of technical development, NRC licensing engagement, and a growing portfolio of strategic supply chain and deployment partnerships. For more information, please visit www.hadronenergy.com.

About GigCapital7 Corp.

GigCapital7 Corp. is a Private-to-Public Equity (PPE)^™ company, also known as a special purpose acquisition company (SPAC), with a Mentor-Investor^™ methodology and a mission to partner with a high technology differentiating company to forge a successful path to the public markets through a business combination. Like all other GigCapital Private-to-Public Equity (PPE) entities, it aimed to partner with an innovative company with exceptional leaders in order to create an industry-leading partnership that will be successful for years to come, and hence is combining with Hadron Energy, Inc.

Private-to-Public Equity (PPE)^™ and “Mentor-Investor^™ are trademarks of GigManagement, LLC, a member entity of GigCapital Global and affiliate of GigCapital7 Corp., used pursuant to agreement.

Forward-Looking Statements

This press release includes certain statements that may be considered forward-looking statements within the meaning of the federal securities laws. Forward-looking statements include, without limitation, statements about future events or Hadron’s or GigCapital7’s future financial or operating performance. For example, statements regarding the benefits of the business combination between the parties and the anticipated timing of, and the funds expected to be available upon, the completion of the business combination are all forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may,” “should,” “could,” “might,” “plan,” “possible,” “project,” “strive,” “budget,” “forecast,” “expect,” “intend,” “will,” “estimate,” “anticipate,” “believe,” “predict,” “potential” or “continue,” or the negatives of these terms or variations thereof or similar terminology.

These forward-looking statements regarding future events and the future results of Hadron and GigCapital7 are based upon estimates and assumptions that, while considered reasonable by Hadron, GigCapital7, and their respective management teams, are inherently uncertain and subject to risks, variability and contingencies, many of which are beyond Hadron’s or GigCapital7’s control. Factors that may cause actual results to differ materially from current expectations include, but are not limited to: the occurrence of any event, change or other circumstances that could give rise to the termination of the business combination agreement or other definitive agreements in connection thereto; the outcome of any legal proceedings that may be instituted against Hadron, GigCapital7 or others following the announcement of the business combination and any definitive agreements with respect thereto; the inability to complete the business combination due to the failure to obtain consents and approvals of the shareholders of GigCapital7; failure to obtain financing to complete the business combination or to satisfy other conditions to closing; delays or failures to obtain necessary regulatory approvals required to complete the business combination or related transactions; changes to the proposed structure of the business combination as a result of applicable laws, regulations or conditions; projections, estimates and

forecasts of revenue and other financial and performance metrics; projections about industry trends and market opportunity; expectations relating to the demand for Hadron’s Halo MMR; Hadron’s ability to scale and grow its business; the cash position of Hadron following closing of the business combination; the ability to meet listing standards in connection with, and following, the consummation of the business combination the risk that the business combination disrupts current plans and operations of Hadron as a result of the announcement and consummation of the business combination; the ability to recognize the anticipated benefits of the business combination, which may be affected by, among other things, competition, the ability of Hadron to successfully commercialize its Halo MMR, and Hadron’s ability to source and maintain key relationships with management and key employees; costs related to the business combination; changes in applicable laws and regulations; political and economic developments and market volatility; the risk that Hadron does not ever enter into any definitive agreements in connection with commercialization of its technology; the risk that Hadron is pursuing an emerging market; and other risks and uncertainties set forth under “Risk Factors” and other documents filed, or to be filed, with the SEC by GigCapital7 and/or Hadron, including the registration statement that Hadron and GigCapital7 filed in connection with the business combination (the “Registration Statement”).

If any of these risks materialize or Hadron’s assumptions prove incorrect, actual results could differ materially from the results implied by the forward-looking statements. There may be additional risks that Hadron or GigCapital7 do not presently know or currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. Any forward-looking statements made by or on behalf of Hadron or GigCapital7 reflect the expectations, plans or forecasts of future events and views of Hadron and GigCapital7 and speak only as of the date they are made. Neither Hadron nor GigCapital7 undertake any obligation to update any forward-looking statements to reflect any changes in their respective expectations with regard thereto or any changes in events, conditions or circumstances on which any such statement is based. These forward-looking statements should not be relied upon as representing Hadron’s or GigCapital7’s assessments as of any date subsequent to the date of this communication. Accordingly, undue reliance should not be placed upon the forward-looking statements.

Additional Information About the Transaction and Where to Find It

The proposed transaction is being submitted to GigCapital7’s shareholders for their consideration and approval. GigCapital7 and Hadron have filed with the SEC the Registration Statement that includes a prospectus relating to the offer of securities to be issued in connection with the business combination and GigCapital7 has filed a final prospectus/ definitive proxy statement, which is being distributed to GigCapital7’s shareholders in connection with GigCapital7’s solicitation of proxies for the shareholder vote in connection with the proposed business combination and other matters as described in the Registration Statement. GigCapital7 is mailing the final prospectus/definitive proxy statement and other relevant documents (the “GigCapital7 Shareholder Materials”) to its shareholders as of April 15, 2026, the record date established for voting on the proposed business combination. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, GIGCAPITAL7’S SHAREHOLDERS AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE FINAL PROSPECTUS/DEFINITIVE PROXY STATEMENT AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION WITH GIGCAPITAL7’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO BE HELD TO APPROVE THE BUSINESS COMBINATION AND OTHER MATTERS AS DESCRIBED IN THE PROSPECTUS/PROXY STATEMENT BECAUSE THESE DOCUMENTS CONTAIN IMPORTANT INFORMATION ABOUT GIGCAPITAL7, HADRON AND THE PROPOSED BUSINESS COMBINATION. Shareholders and other interested parties may obtain a copy of these documents, without charge, at the SEC’s website located at www.sec.gov or by directing a written request to GigCapital7 Corp., Attn: Corporate Secretary, 1731 Embarcadero Rd., Suite 200, Palo Alto, CA.

NEITHER THE SEC NOR ANY STATE SECURITIES REGULATORY AGENCY HAS APPROVED OR DISAPPROVED THE BUSINESS COMBINATION OR ANY INVESTMENT IN ANY SECURITIES DESCRIBED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE BUSINESS COMBINATION OR ANY RELATED TRANSACTIONS OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS COMMUNICATION. ANY REPRESENTATION TO THE CONTRARY CONSTITUTES A CRIMINAL OFFENSE.

Participants in the Solicitation

Hadron, GigCapital7 and their respective directors, executive officers, management and employees, under SEC rules, may be deemed to be participants in a solicitation of proxies of GigCapital7’s shareholders in connection with the business combination. Investors and shareholders may obtain more detailed information regarding the names, affiliations, and interests of GigCapital7’s directors and executive officers in its filings with the SEC, including GigCapital7’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on March 6, 2026. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies of GigCapital7 shareholders in connection with the business combination is set forth in the Registration Statement, along with information concerning the interests of Hadron’s and GigCapital7’s participants in the solicitation. Such interests may in some cases be different from those of Hadron’s or GigCapital7’s equity holders generally.

No Offer or Solicitation

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. This communication is not, and under no circumstances is to be construed as, a prospectus, an advertisement or a public offering of the securities described herein in the United States or any other jurisdiction. No offer of securities shall be made except by means of a prospectus filed with the SEC meeting the requirements of Section 10 of the Securities Act of 1933, as amended, or exemptions therefrom.

Contacts

Hadron Energy Investor Center:

https://www.hadronenergy.com/investor-relations

Hadron Energy Media & Investor Contact:

Samuel Gibson

Chief Executive Officer

sgibson@hadronenergy.com

GigCapital7 Investor Contact:

Christine M. Marshall

Chief Financial Officer

christine@gigcapitalglobal.com

Exhibit 99.2

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A/A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) 

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material under §240.14a-12

GigCapital7 Corp.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11

SUPPLEMENT TO PROXY STATEMENT

OF

GigCapital7, Corp.

Dated May 1, 2026

The following disclosures in this proxy supplement (the “Supplement”) supplement, and should be read in conjunction with, the disclosures contained in the joint definitive proxy statement/final prospectus (the “Proxy Statement”), filed on April 15, 2026, and the supplement to the Proxy Statement dated April 20, 2026 (the “Prior Supplement”), each of which in turn should be read in its entirety. To the extent the information set forth herein differs from or updates information contained in the Proxy Statement or Prior Supplement, the information set forth herein shall supersede or supplement the information in the Proxy Statement or Prior Supplement, as applicable. All other information in the Proxy Statement and the Prior Supplement remains unchanged.

As provided in the Proxy Statement, GigCapital7 Corp., a Cayman Islands exempted company (“GigCapital7”) is soliciting stockholder approval of, among other things, its proposed business combination (the “Business Combination”) with Hadron Energy, Inc., a Delaware corporation (the “Company”) and the other matters as described in the Proxy Statement, which includes a prospectus relating to the offer of the securities to be issued to the stockholders of the Company in connection with the Business Combination. The purpose of the following supplemental disclosures is to provide additional information about the Non-Redemption Agreements (as defined below). Terms used herein, unless otherwise defined, have the meanings set forth in the Proxy Statement or the Prior Supplement.

DESCRIPTION OF NON-REDEMPTION AGREEMENTS

On May 1, 2026, GigCapital7 entered into separate agreements (each, a “Non-Redemption Agreement”, and together, the “Non-Redemption Agreements”) with certain of the public stockholders of GigCapital7 (each, individually, a “Public Stockholder”, and together, the “Public Stockholders”) eligible to redeem their respective Class A ordinary shares, par value $0.0001 per share, of GigCapital7 (“Ordinary Shares”) at the upcoming extraordinary general meeting of the shareholders of GigCapital7 scheduled for May 7, 2026 (the “May 2026 Meeting”) to approve the business combination (the “Business Combination”) contemplated by that certain Business Combination Agreement, dated as of September 27, 2025, as amended by the First Amendment to Business Combination Agreement, dated as of December 12, 2025, and as further amended by the Second Amendment to Business Combination Agreement, dated as of April 16, 2026 (as may further be amended from time to time, the “Business Combination Agreement”), by and among GigCapital7, the Company, and MMR Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of GigCapital7 (“Merger Sub”). Capitalized terms used herein but not otherwise defined shall have the meanings ascribed to such terms in the Non-Redemption Agreements. Any reference herein to the “Non-Redemption Agreement” is to be treated as a reference to each Public Stockholder’s separate agreement and should be construed accordingly and any action taken by a Public Stockholder should be construed as an action under its own respective agreement.

Pursuant to the Non-Redemption Agreements, the Public Stockholders that have entered into the Non-Redemption Agreements have agreed not to exercise redemption rights with respect to their respective Ordinary Shares in connection with the Business Combination, and to waive all redemption rights with respect to the aggregate number of [•] Ordinary Shares (the “Non-Redemption Shares”), provided that no Public Stockholder is required to hold a number of Ordinary Shares representing in excess of 9.99% of the total number of Ordinary Shares outstanding. The Non-Redemption Shares held by the Public Stockholders will not be subject to any other transfer restrictions than those described in the Non-Redemption Agreements. The Public Stockholders will have no obligation to hold the Non-Redemption Shares beyond the Redemption Deadline, after which such shares will be freely tradeable without restrictive legends.

In the event that GigCapital7 enters one or more other non-redemption agreements in connection with the Business Combination (“Other Agreements”), GigCapital7 has agreed that the terms of such Other Agreements will not be materially more favorable to such other investors than the terms of the Non-Redemption Agreements are in respect of the Public Stockholders. In the event that another third party is afforded any such more favorable terms than the Public Stockholders, GigCapital7 has agreed to promptly inform the Public Stockholders of such more favorable terms in writing, and the Public Stockholders will then have the right to elect to have such more favorable terms included in each Public Stockholder’s respective Non-Redemption Agreement.

A copy of the form of Non-Redemption Agreement is filed as Exhibit 10.1 to the Current Report on Form 8-K filed with the SEC by GigCapital7 on the date hereof, and the foregoing description of the Non-Redemption Agreements is qualified in its entirety by reference thereto.

IMPORTANT NOTICES

About GigCapital7

GigCapital7 is a blank check company, also commonly referred to as a special purpose acquisition company, or SPAC, formed for the purpose of entering into a merger, capital stock exchange, asset acquisition, stock purchase reorganization or similar business combination with one or more businesses or entities. While GigCapital7’s efforts to identify a target business may span many industries, the focus of GigCapital7’s search is for prospects within the technology, media, and telecommunications, artificial intelligence and machine learning, cybersecurity, medical technology and medical equipment, semiconductor and sustainable industries. GigCapital7 was sponsored by GigAcquisitions7, LLC, which was founded by GigFounders, LLC, each a member entity of GigCapital Global, and formed for the purpose of entering into a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization, or similar business combination with one or more businesses.

On September 27, 2025, GigCapital7 entered into the Business Combination Agreement with Merger Sub and the Company, pursuant to the terms of which, Merger Sub will merge with and into the Company, with the Company surviving as a wholly-owned subsidiary of GigCapital7, which will be renamed as Hadron Energy, Inc.

Additional Information and Where to Find It

In connection with the proposed Business Combination between GigCapital7 and the Company, GigCapital7 has filed the Proxy Statement, which includes a prospectus, with the SEC, and has commenced distribution of the Proxy Statement to GigCapital7’s shareholders in connection with GigCapital7’s solicitation of proxies for the shareholder vote in connection with the Business Combination and related transactions, and the other matters described in the Proxy Statement. GigCapital7 is mailing the Proxy Statement and other relevant documents to its shareholders as of April 15, 2026, the record date established for voting on the proposed Business Combination.

BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, GIGCAPITAL7’S SHAREHOLDERS AND OTHER INTERESTED PARTIES ARE URGED TO READ, WHEN AVAILABLE, THE DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION WITH GIGCAPITAL7’S SOLICITATION OF PROXIES FOR THE EXTRAORDINARY GENERAL MEETING OF ITS SHAREHOLDERS TO BE HELD TO APPROVE THE BUSINESS COMBINATION AGREEMENT, THE BUSINESS COMBINATION AND OTHER MATTERS AS DESCRIBED IN THE DEFINITIVE PROXY STATEMENT/FINAL PROSPECTUS BECAUSE THESE DOCUMENTS WILL CONTAIN IMPORTANT INFORMATION ABOUT GIGCAPITAL7, THE COMPANY AND THE PROPOSED TRANSACTIONS. Shareholders and other interested parties may obtain a copy of these documents, without charge, at the SEC’s website located at www.sec.gov or by directing a written request to GigCapital7 Corp., Attn: Corporate Secretary, 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303.

NEITHER THE SEC NOR ANY STATE SECURITIES REGULATORY AGENCY HAS APPROVED OR DISAPPROVED THE TRANSACTIONS DESCRIBED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE TRANSACTIONS OR ANY RELATED TRANSACTIONS OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS CURRENT REPORT. ANY REPRESENTATION TO THE CONTRARY CONSTITUTES A CRIMINAL OFFENSE.

Participants in the Solicitation

The Company, GigCapital7 and their respective directors, executive officers, management and employees, under SEC rules, may be deemed to be participants in a solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination and related transactions. Investors and shareholders may obtain more detailed information regarding the names, affiliations, and interests of GigCapital7’s directors and executive officers in its filings with the SEC, including GigCapital7’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on March 6, 2026. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies of GigCapital7’s shareholders in connection with the Business Combination is set forth in the Proxy Statement, along with information concerning the interests of the Company’s and GigCapital7’s participants in the solicitation. Such interests may in some cases be different from those of the Company’s or GigCapital7’s equity holders generally. Investors and security holders may obtain free copies of these documents as described above.

Forward-Looking Statements:

Certain statements included in this Current Report on Form 8-K and the exhibit hereto that are not historical facts are forward-looking statements for purposes of the “safe harbor” provisions under the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally are accompanied by words such as “may,” “could,” “would,” “should,” “expect,” “possible,” “potential,” “goal,” “opportunity,” “project,” “believe,” “future”, “designed,” “forecast,” “target,” “will,” “anticipate,” “estimate,” “continue,” “intend,” “plan,” “predict,” “seem,” “seek,” “outlook,” and, in each case, similar words and expressions, or their negative variations, and terminology that predict or indicate future events or trends or that are not statements of historical matters.

Forward-looking statements generally relate to future events, including, without limitation, statements, estimates, forecasts or projections regarding the Company’s future manufacturing capacity and plant performance; market opportunity and market share; estimates and projections of adjacent energy sector opportunities; the Company’s projected commercialization costs and timeline; the Company’s ability to demonstrate scientific and engineering feasibility of its technologies; the Company’s ability to attract, retain and expand its future customer base; the Company’s ability to timely and effectively meet construction and development timelines and scale its production and manufacturing processes; the Company’s ability to develop products and services and bring them to market in a timely manner; the Company’s ability to compete successfully with energy products and solutions offered by other companies; the Company’s expectations concerning relationships with strategic partners, suppliers, governments, regulatory bodies and other third parties; the Company’s ability to maintain, protect, and enhance its intellectual property; future ventures or investments in companies or products, services, or technologies; the Company’s expectations regarding regulatory framework development; the potential for and timing of receipt of licenses and permits for current and future operations, including licenses to operate nuclear facilities from the U.S. Nuclear Regulatory Commission; the success of proposed projects for which the Company’s products would provide power, which is outside of the Company’s control; the safety profile of the Company’s technology; the execution and success of any definitive agreements related to partnerships and collaborations between the Company and third parties; the Company’s expectations with respect to future performance; GigCapital7’s and the Company’s respective industries, future events, the anticipated use of the investor presentation by the Company and GigCapital7, potential financing activities by the Company, including any contemplated private placement of SAFEs, potential non-deal roadshows, and possible PIPE financing discussions, the proposed transactions between GigCapital7 and the Company, the anticipated timing and benefits of the Business Combination, the entry into agreements related to the Business Combination, the consummation of the proposed Business Combination; the estimated or anticipated future results and benefits of the combined company following the proposed transactions, including the likelihood and ability of the parties to successfully consummate the proposed transactions, future opportunities for the combined company, GigCapital7’s or the Company’s future financial or operating performance, and other statements that are not historical facts. In addition, these forward-looking statements include, without limitation, statements regarding GigCapital7’s and the Company’s expectations with respect to future performance and anticipated financial impacts of the proposed private placements, the Business Combination and other transactions, the satisfaction of the closing conditions to the Business Combination and other transactions, and the timing of the completion of the Business Combination and other transactions. Such forward-looking statements are subject to risks, uncertainties (some of which are beyond the control of the Company and/or GigCapital7), and other factors which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by GigCapital7 and its management, and the Company and its management, as the case may be, are inherently uncertain. Factors that may cause actual results to differ materially from current expectations include, without limitation: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the proposed Business Combination or other definitive agreements in connection thereto; (2) the outcome of any legal proceedings that may be instituted against the Company, GigCapital7 or others following the announcement of the proposed Business Combination and any definitive agreements with respect thereto; (3) the inability to successfully or timely consummate the Business Combination and related transactions, including due to the failure to obtain consents and approvals of the shareholders of GigCapital7; (4) the failure to obtain financing to complete the transactions or to satisfy other conditions to closing; delays or failures to obtain necessary regulatory approvals required to complete the transactions; (5) changes to the proposed structure of the transactions as a result of applicable laws, regulations or conditions; (6) the ability of GigCapital7 to meet applicable listing standards following the consummation of the Business Combination; (7) the risk that the Business Combination disrupts current plans and operations of the Company as a result of the announcement and consummation of the Business Combination; (8) projections, estimates and forecasts of revenue and other financial and performance metrics; (9) projections about industry trends and market opportunity; expectations relating to the demand for the Company’s micro modular reactor (“MMR”) technology; (10) the Company’s ability to scale and grow its business; (11) the cash position of the Company following closing of the Business Combination; (12) the risk that the transactions disrupt current plans and operations of the Company as a result of the announcement and consummation of the transactions; (13) the ability to recognize the anticipated benefits of the Business Combination, which may be affected by, among other things, competition, the ability of the Company to successfully commercialize its MMR, and the Company’s ability to source and maintain key relationships with management and key employees; (14) the ability of the combined company to grow and manage growth profitably, continue developing its properties, maintain relationships with customers and suppliers, and retain its management and key employees; (15) costs

related to the transactions; (16) risks relating to significant legal, commercial, regulatory and technical uncertainty regarding the classification and management of nuclear energy resources, including evolving environmental standards, permitting requirements, and potential changes in applicable laws or regulations; changes in applicable laws and regulations; political and economic developments and market volatility; (17) the possibility that the Company and/or its related entities may be adversely affected by other economic, business, and/or competitive factors; (18) risks relating to the Company’s anticipated operations and business, including its focus on the development and commercialization of MMR technologies; (19) the risk that the Company does not ever enter into any definitive agreements in connection with commercialization of its technology; (20) the risk that the Company is pursuing an emerging market; (21) the amount of redemption requests made by the GigCapital7 public shareholders; (22) risks related to the future performance of the Company; (23) the potential need for financing for future operations; (24) financial, political and legal conditions; (25) increased competition in the energy industry; (26) limited supply of materials and supply chain disruptions; and (27) other risks and uncertainties set forth under “Risk Factors” and other documents filed, or to be filed, with the SEC by GigCapital7 and/or the Company, including the Registration Statement that the Company and GigCapital7 filed in connection with the Business Combination, and GigCapital7’s other filings with the SEC, as well as any further risks and uncertainties e contained in the Proxy Statement. In addition, there may be additional risks that neither GigCapital7 or the Company presently know, or that GigCapital7 or the Company currently believe are immaterial, that could also cause actual results to differ from those contained in the forward-looking statements. Nothing in this Current Report should be regarded as a representation by any person that the forward-looking statements set forth herein will be achieved or that any of the contemplated results of such forward-looking statements will be achieved. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. Except as may be required by law, neither GigCapital7 nor the Company undertakes any duty to update these forward-looking statements. The inclusion of any statement in this communication does not constitute an admission by GigCapital7, the Company, or any other person that the events or circumstances described in such statement are material.

FAQ

What did GigCapital7 (GIG) announce regarding Non-Redemption Agreements?

GigCapital7 announced Non-Redemption Agreements with certain public stockholders covering 1,800,000 Class A shares. These holders agreed not to redeem in connection with the Hadron Energy business combination, preserving about $19.3 million in the SPAC’s trust account for the closing.

How much funding is GigCapital7 (GIG) directing to Hadron Energy from these arrangements?

The Non-Redemption Agreements represent approximately $19.3 million, which will move onto Hadron Energy’s balance sheet at closing. This is in addition to about $7.6 million previously funded through a SAFE bridge note, for total equity of roughly $26.9 million.

Does GigCapital7 (GIG) now meet the minimum cash condition for the Hadron Energy merger?

Yes. GigCapital7 states that the combined $26.9 million from Non-Redemption Agreements and prior SAFE funding exceeds the Business Combination Agreement’s announced $20 million minimum cash condition required to close the business combination with Hadron Energy.

When is the GigCapital7 (GIG) shareholder meeting and redemption deadline for the Hadron deal?

The extraordinary general meeting to approve the Hadron Energy business combination is scheduled for May 7, 2026. The deadline for GigCapital7 public shareholders to submit redemption requests is 5:00 p.m. Eastern Time on May 5, 2026.

Can GigCapital7 (GIG) enter additional non-redemption agreements with other investors?

GigCapital7 may enter additional Other Agreements with different investors. It has agreed that these will not be materially more favorable than the existing Non-Redemption Agreements unless current public stockholders are offered the right to elect comparable improved terms.

What proxy materials did GigCapital7 (GIG) file in connection with the Hadron Energy merger?

GigCapital7 filed a joint definitive proxy statement/final prospectus on April 15, 2026 and a prior supplement on April 20, 2026. It has now filed a further proxy supplement providing more detail on the Non-Redemption Agreements ahead of the shareholder vote.

Filing Exhibits & Attachments

7 documents

Press Releases

• EX-99.1 EX-99.1 18.4 KB
• EX-99.2 EX-99.2 32.1 KB

Agreements & Contracts

• EX-10.1 EX-10.1 43.6 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 5.0 KB
• EX-101 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE 14.5 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 24.8 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 15.5 KB