# EDGAR Filing Document

**Accession Number:** 0001858007
**File Stem:** 0001213900-25-051563
**Filing Date:** 2025-6
**Character Count:** 124362
**Document Hash:** 516a685b0f2828e6cc1c74b207e457ae
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-051563.hdr.sgml**: 20250605

**ACCESSION NUMBER**: 0001213900-25-051563

**CONFORMED SUBMISSION TYPE**: DEF 14A

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250618

**FILED AS OF DATE**: 20250605

**DATE AS OF CHANGE**: 20250605

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Goldenstone Acquisition Ltd.
- **CENTRAL INDEX KEY:** 0001858007
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRICAL INDUSTRIAL APPARATUS [3620]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** DEF 14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41328
- **FILM NUMBER:** 251027107

**BUSINESS ADDRESS:**
- **STREET 1:** 37-02 PRINCE STREET
- **STREET 2:** 2ND FLOOR
- **CITY:** FLUSHING
- **STATE:** NY
- **ZIP:** 11354
- **BUSINESS PHONE:** 330-352-7788

**MAIL ADDRESS:**
- **STREET 1:** 37-02 PRINCE STREET
- **STREET 2:** 2ND FLOOR
- **CITY:** FLUSHING
- **STATE:** NY
- **ZIP:** 11354

#### UNITED STATES<br>SECURITIES AND EXCHANGE COMMISSION<br>Washington, D.C. 20549

#### _____________________________________

#### SCHEDULE 14A

#### _____________________________________

#### (Rule 14a-101)<br>INFORMATION REQUIRED IN PROXY STATEMENT

#### SCHEDULE 14A INFORMATION

#### Proxy Statement Pursuant to Section 14(a)<br>of the Securities Exchange Act of 1934
<u> Filed by the Registrant </u>   <u> ☒ </u> <br> <u> Filed by a Party other than the Registrant </u>   <u> ☐ </u>

Check the appropriate box:

 ☐ Preliminary Proxy Statement

 ☐ **Confidential, for the use of the Commission only (as permitted by Rule 14a**-6**(e)(2))**

 ☒ Definitive Proxy Statement

 ☐ Definitive Additional Materials

 ☐ Soliciting Material Pursuant to §240.14a-12

#### Goldenstone Acquisition Limited<br> (Name of Registrant as Specified in its Charter)
_____________________________________________________________****<br> (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

<u> ☒ </u>   <u> No fee required. </u> <br> <u> ☐ </u>   <u> Fee paid previously with preliminary materials. </u> <br> <u> ☐ </u>   <u> Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. </u>

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#### Goldenstone Acquisition Limited<br>4360 E. New York Street<br>Aurora, IL 60504
June 5, 2025

Dear Stockholder:

On behalf of the Board of Directors the "**<u>Board</u>**") of Goldenstone Acquisition Limited (the "**<u>Company</u>**," "**<u>Goldenstone</u>**" or "**<u>we</u>**"), I invite you to attend our Special Meeting of Stockholders (the "**<u>Special Meeting</u>**"). We hope you can join us. The Special Meeting will be held at 11:00 a.m. Eastern Time on June 18, 2025. Goldenstone will be holding the Special Meeting via teleconference using the following dial-in information:

Telephone access:<br>Within the U.S. and Canada:<br>1 800-450-7155 (toll-free)<br>Outside of the U.S. and Canada:<br>+1 857-999-9155 (standard rates apply)<br>Meeting ID: 7340278#

The Notice of Special Meeting of Stockholders, the Proxy Statement and the proxy card are also available at *https://www.cstproxy.com/goldenstoneacquisition/2025*. We are first mailing these materials to our stockholders on or about June 5, 2025.

As discussed in the enclosed Proxy Statement, the purpose of the Special Meeting is to consider and vote upon the following proposals:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Proposal 1 — A proposal to amend the Company's amended and restated certificate of incorporation, as amended on September 21, 2023 and June 18, 2024 (the **"<u>Charter</u>"**), to extend the date by which the Company has to consummate a business combination up to twelve (12) times (the "**<u>Third Extension Amendment</u>"**), each such extension for an additional one (1) month period (each an **"<u>Extension</u>"**), from June 21, 2025 to June 21, 2026 (such date actually extended being referred to as the **"<u>Extended Date</u>"**) (we refer to this proposal as the **"<u>Third Extension Amendment Proposal</u>"**). A copy of the proposed Third Extension Amendment is attached hereto as <u>Annex A</u>;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Proposal 2 — A proposal to amend the Company's investment management trust agreement, dated as of March 16, 2022, as amended on September 21, 2023 and June 18, 2024 (the "**<u>Trust Agreement</u>**"), by and between the Company and Continental Stock Transfer & Trust Company, to provide that the time for the Company to complete its initial business combination (the "**<u>Business Combination Period</u>**") under the Trust Agreement from June 21, 2025 to June 21, 2026 (the "**<u>Third Trust Amendment</u>**") provided that the Company deposits into the trust account established in connection with the Company's initial public offering (the "**<u>Trust Account</u>**") the sum of $50,000 for each one month extended (we refer to this proposal as the "**<u>Third Trust Amendment Proposal</u>**"). A copy of the proposed Third Trust Amendment is attached hereto as <u>Annex B</u>; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) Proposal 3 — A proposal to direct the chairman of the Special Meeting to adjourn the Special Meeting to a later date or dates (the "**<u>Adjournment</u>**"), if necessary, to permit further solicitation and vote of proxies if, based upon the tabulated vote at the time of the Special Meeting, there are not sufficient votes to approve Proposal 1, or Proposal 2 or for such other reason as the Chairman of the Special Meeting, in his sole discretion, shall decide (we refer to this proposal as the "**<u>Adjournment Proposal</u>**").

The Charter and the Trust Agreement initially provided for a 12-month Business Combination Period from the date of completion of the Company's initial public offering (until March 21, 2023) and further provided that the Company could extend the Business Combination Period for up to 9 additional months in three-month increments provided that the Company deposited into trust $575,000 for each three-month extension. On September 21, 2023, the Charter and the Trust Agreement were amended to extend the date by which the Company has to consummate a business combination up to nine (9) times, each such extension for an additional one (1) month period, from September 21, 2023 to June 21, 2024, provided that the Company deposited into the trust the sum of $100,000 for each one month

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extension. On June 18, 2024, the Charter and the Trust Agreement were amended again to extend the date by which the Company has to consummate a business combination up to twelve (12) times, each such extension for an additional one (1) month period, from June 21, 2024 to June 21, 2025, provided that the Company deposited into the trust the sum of $50,000 for each one month extension. As of the date of this proxy statement, the Company has extended the Business Combination Period to its current expiration of June 21, 2025.

On June 26, 2024, the Company entered into a Business Combination Agreement (as amended, the "BCA") with Infintium Fuel Cell Systems, Inc., a Delaware corporation (the "Infintium"), Pacifica Acquisition Corp., a Delaware corporation ("Merger Sub") and wholly-owned subsidiary of the Company, and Yan (Chris) Feng, solely in his capacity as representative, agent and attorney-in-fact of the Infintium Securityholders (the "Securityholder Representative," and, together with the Company, Infintium, Merger Sub, the "Parties"). Pursuant to the BCA, Merger Sub will merge with and into Infintium (the "Merger"), with Infintium surviving the Merger as a wholly-owned subsidiary of the Company. In connection with the Merger, the Company will change its name to "Infintium Fuel Cell Systems Holdings, Inc." The purpose of the Third Extension Amendment Proposal and Third Trust Amendment Proposal is to allow the Company an option to further extend the time to complete the Business Combination. Without the Third Extension Amendment and the Third Trust Amendment, the Company will not be able to complete a Business Combination on or before June 21, 2025.

Based on the amount in trust as of May 31, 2025 of $18,847,241, the current per share redemption price is approximately $11.81 without giving effect to interest that may be withdrawn to pay tax obligations.

The Company's board of directors (the "**<u>Board</u>**") has determined that it is in the best interests of Goldenstone to seek an extension of the June 21, 2025 termination date and have the Company's stockholders approve the Third Extension Amendment Proposal and Third Trust Amendment Proposal because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved and the currently required extension payments are not made.

Each extension is only approved on a monthly basis and the Board is under no obligation to approve any extensions. If the Board otherwise determines that the Company will not be able to consummate an initial business combination, the Company would wind up its affairs and redeem 100% of the outstanding Public Shares in accordance with the same procedures set forth below that would be applicable if the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are not approved.

Each of the Third Extension Amendment Proposal, the Third Trust Amendment Proposal, and the Adjournment Proposal is more fully described in the accompanying Proxy Statement.

Subject to applicable securities laws (including with respect to material nonpublic information), the Company or the Sponsor or any of their respective affiliates may (i) purchase public shares from institutional and other investors (including those who elect to redeem, or indicate an intention to redeem, public shares), (ii) enter into transactions with such investors and others to provide them with incentives to not redeem their public shares, or (iii) execute agreements to purchase such public shares from such investors or enter into non-redemption agreements. In the event that the Sponsor or any of its affiliates purchase public shares in situations in which the tender offer rules restrictions on purchases would apply, they (a) would purchase the public shares at a price no higher than the price offered through the Company's redemption process (i.e., approximately $11.81 per share, based on the amounts held in the Trust Account as of May 31, 2025 without giving effect to interest that may be withdrawn to pay tax obligations; (b) would represent in writing that such public shares will not be voted in favor of approving the Third Extension Amendment proposal; and (c) would waive in writing any redemption rights with respect to the public shares so purchased.

To the extent any such purchases by the Sponsor or its affiliates are made in situations in which the tender offer rules restrictions on purchases apply, we will disclose in a Current Report on Form 8-K prior to the Special Meeting the following: (i) the number of public shares purchased outside of the redemption offer, along with the purchase price(s) for such public shares; (ii) the purpose of any such purchases; (iii) the impact, if any, of the purchases on the likelihood that the Third Extension Amendment proposal will be approved; (iv) the identities of the securityholders who sold to the Sponsor or any of its affiliates (if not purchased on the open market) or the nature of the securityholders (e.g., 5% security holders) who sold such public shares; and (v) the number of shares of common stock for which the Company has received redemption requests pursuant to its redemption offer.

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The purpose of such share purchases and other transactions would be to increase the likelihood of otherwise limiting the number of public shares electing to redeem. If such transactions are effected, the consequence could be to cause the Third Extension Amendment proposal to be effectuated in circumstances where such effectuation could not otherwise occur. Consistent with SEC guidance, purchases of shares by the persons described above would not be permitted to be voted for the Third Extension Amendment proposal at the Special Meeting and could decrease the chances that the Third Extension Amendment proposal would be approved. In addition, if such purchases are made, the public "float" of our securities and the number of beneficial holders of our securities may be reduced, possibly making it difficult to maintain or obtain the quotation, listing or trading of our securities on a national securities exchange.

The Company hereby represents that any Company securities purchased by the Sponsor or any of its affiliates in situations in which the tender offer rules restrictions on purchases would apply would not be voted in favor of approving the Third Extension Amendment proposal.

**You are not being asked to vote on any business combination at this time. If the Third Extension Amendment, and the Third Trust Amendment are implemented and you do not elect to redeem your Public Shares now, you will retain the right to vote on the business combination when it is submitted to stockholders and the right to redeem your Public Shares into a pro rata portion of the Trust Account in the event a business combination is approved and completed (as long as your election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought) or the Company has not consummated the business combination by the Extended Date.**

In connection with the Third Extension Amendment, public stockholders may elect (the "**<u>Election</u>**") to redeem their public shares ("**<u>Public Shares</u>**") for a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company to pay franchise and income taxes, divided by the number of then outstanding Public Shares, regardless of whether such public stockholders vote "FOR" or "AGAINST" the Third Extension Amendment Proposal, the Third Trust Amendment Proposal, or the Adjournment Proposal, and an Election can also be made by public stockholders who do not vote, or do not instruct their broker or bank how to vote, at the Special Meeting. Public stockholders may make an Election regardless of whether such public stockholders were holders as of the Record Date. If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are approved by the requisite vote of stockholders, the remaining holders of Public Shares will retain their right to redeem their Public Shares when the Business Combination is submitted to the stockholders, subject to any limitations set forth in the Charter, as amended by the Third Extension Amendment (as long as their election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought). Each redemption of shares by our public stockholders will decrease the amount in the Trust Account, which held approximately $18,847,241 of marketable securities as of May 31, 2025. In addition, public stockholders who do not make the Election would be entitled to have their shares redeemed for cash if the Company has not completed a Business Combination by the Extended Date. The closing price of the Company's common stock on the Record Date was $11.90. The Company cannot assure stockholders that they will be able to sell their shares of the Company's common stock in the open market, even if the market price per share is higher than the redemption price stated above, as there may not be sufficient liquidity in its securities when such stockholders wish to sell their shares.

The Sponsor and our officers and directors and other initial stockholders hold the right to vote an aggregate of 1,788,750 shares of our common stock, which include 1,437,500 shares of our common stock, which we refer to as the "**<u>Founder Shares</u>**," that were issued prior to the IPO and 351,250 shares of common stock that make up part of the units, which we refer to as the "**<u>Private Placement Units</u>**," that were purchased by the Sponsor in a private placement which occurred simultaneously with the completion of the IPO.

**To exercise your redemption rights, you must tender your shares to the Company's transfer agent at least two business days prior to the Special Meeting (or June 16, 2025). You may tender your shares by either delivering your share certificate to the transfer agent or by delivering your shares electronically using the Depository Trust Company's DWAC (Deposit/Withdrawal At Custodian) system. If you hold your shares in street name, you will need to instruct your bank, broker or other nominee to withdraw the shares from your account in order to exercise your redemption rights.**

If the Third Extension Amendment Proposal, and the Third Trust Amendment Proposal are not approved and we do not consummate a Business Combination by June 21, 2025, in accordance with the Charter and Trust Agreement, we will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem 100% of the outstanding Public Shares, at a per-share price, payable

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in cash, equal to the aggregate amount then on deposit in the Trust Account, including any interest not previously released to us (net of taxes payable), divided by the number of then outstanding Public Shares, which redemption will completely extinguish public stockholders' rights as stockholders (including the right to receive further liquidation distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of our remaining stockholders and the Board, dissolve and liquidate, subject (in the case of (ii) and (iii) above) to our obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. There will be no distribution from the Trust Account with respect to our warrants or rights, which will expire worthless in the event of our winding up. In the event of a liquidation, the Sponsor, our officers and directors and our other initial stockholders will not receive any monies held in the Trust Account as a result of their ownership of the Founder Shares or the Private Placement Units.

Subject to the foregoing, the affirmative vote of at least a majority of the shares of the Company's outstanding common stock, including the Founder Shares, will be required to approve the Third Extension Amendment Proposal and the Third Trust Amendment Proposal. The Board will abandon and not implement the Third Extension Amendment and the Third Trust Amendment unless our stockholders approve both the Third Extension Amendment and the Third Trust Amendment. This means that if one proposal is approved by the stockholders and the other proposal is not, neither proposal will take effect. Notwithstanding stockholder approval of the Third Extension Amendment Proposal and the Third Trust Amendment Proposal, the Board will retain the right to abandon and not implement the Third Extension Amendment and the Third Trust Amendment at any time without any further action by our stockholders.

The Board has fixed the close of business on June 3, 2025 as the Record Date for determining the Company stockholders entitled to receive notice of and vote at the Special Meeting and any adjournments or postponements thereof. Only holders of record of the Company's common stock on that date are entitled to have their votes counted at the Special Meeting or any adjournments or postponements thereof.

**After careful consideration of all relevant factors, the Board has determined that each of the proposals are advisable and recommends that you vote or give instruction to vote "FOR" such proposals.**

Enclosed is the Proxy Statement containing detailed information concerning the Third Extension Amendment, and the Third Trust Amendment at the Special Meeting. Whether or not you plan to attend the Special Meeting, we urge you to read this material carefully and vote your shares.

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| |
|:---|
|  Sincerely, |
|  /s/ Eddie Ni |
|  Eddie Ni |
|  Chief Executive Officer and Director |
|  June 5, 2025 |

---

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#### GOLDENSTONE ACQUISITION LIMITED<br>4360 E. New York Street<br>Aurora, IL 60504
**NOTICE OF SPECIAL MEETING OF STOCKHOLDERS <br>TO BE HELD ON JUNE 18, 2025**

June 5, 2025

To the Stockholders of Goldenstone Acquisition Limited:

NOTICE IS HEREBY GIVEN that an Special Meeting of Stockholders (the "**<u>Special Meeting</u>**") of Goldenstone Acquisition Corp. (the "**<u>Company</u>**," "**<u>Goldenstone</u>**" or "**<u>we</u>**"), a Delaware corporation, will be held on June 18, 2025, at 11:00 a.m. Eastern Time. The Company will be holding the Special Meeting via teleconference using the following dial-in information:

Telephone access:<br>Within the U.S. and Canada:<br>1 800-450-7155 (toll-free)<br>Outside of the U.S. and Canada:<br>+1 857-999-9155 (standard rates apply)<br>Meeting ID: 7340278#

The purpose of the Special Meeting will be to consider and vote upon the following proposals:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. Proposal 1 — A proposal to amend the Company's amended and restated certificate of incorporation, as amended on September 21, 2023 and June 18, 2024 (the **"<u>Charter</u>"**), to extend the date by which the Company has to consummate a business combination up to 12 times (the "**<u>Third Extension Amendment</u>"**), each such extension for an additional one (1) month period (each an **"<u>Extension</u>"**), from June 21, 2025 to June 21, 2026 (such date actually extended being referred to as the **"<u>Extended Date</u>"**) (we refer to this proposal as the **"<u>Third Extension Amendment Proposal</u>"**). A copy of the proposed Third Extension Amendment is attached hereto as <u>Annex A</u>;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Proposal 2 — A proposal to amend the Company's investment management trust agreement, dated as of March 16, 2022, as amended on September 21, 2023 and June 18, 2024 (the "**<u>Trust Agreement</u>**"), by and between the Company and Continental Stock Transfer & Trust Company, to provide that the time for the Company to complete its initial business combination (the "**<u>Business Combination Period</u>**") under the Trust Agreement from June 21, 2025 to June 21, 2026 (the "**<u>Third Trust Amendment</u>**") provided that the Company deposits into the trust account established in connection with the Company's initial public offering (the "**<u>Trust Account</u>**") the sum of $50,000 for each one-month extended (we refer to this proposal as the "**<u>Third Trust Amendment Proposal</u>**"). A copy of the proposed Third Trust Amendment is attached hereto as <u>Annex B</u>; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Proposal 3 — A proposal to direct the chairman of the Special Meeting to adjourn the Special Meeting to a later date or dates (the "**<u>Adjournment</u>**"), if necessary, to permit further solicitation and vote of proxies if, based upon the tabulated vote at the time of the Special Meeting, there are not sufficient votes to approve Proposals 1, or Proposal 2 or otherwise at the discretion of the chairman of the Special Meeting (we refer to this proposal as the "**<u>Adjournment Proposal</u>**"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. To act on such other matters as may properly come before the Special Meeting or any adjournments or postponements thereof.

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The Board of Directors has fixed the close of business on June 3, 2025 as the Record Date for the Special Meeting and only holders of shares of record at that time will be entitled to notice of and to vote at the Special Meeting or any adjournments or postponements thereof.

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| |
|:---|
|  By Order of the Board of Directors |
|  /s/ Eddie Ni |
|  Eddie Ni<br> Chief Executive Officer and Director |

---

Aurora, Illinois<br>June 5, 2025

#### IMPORTANT
**IF YOU CANNOT ATTEND THE SPECIAL MEETING VIRTUALLY, IT IS REQUESTED THAT YOU INDICATE YOUR VOTE ON THE ISSUES INCLUDED ON THE ENCLOSED PROXY AND DATE, SIGN AND MAIL IT IN THE ENCLOSED SELF**-ADDRESSED **ENVELOPE WHICH REQUIRES NO POSTAGE IF MAILED IN THE UNITED STATES OF AMERICA.**

**IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE SPECIAL MEETING OF STOCKHOLDERS TO BE HELD ON JUNE 18, 2025. THIS PROXY STATEMENT TO THE STOCKHOLDERS WILL BE AVAILABLE AT *HTTPS://WWW.CSTPROXY.COM/GOLDENSTONEACQUISITION/2025*.**

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#### GOLDENSTONE ACQUISITION LIMITED<br>4360 E. New York Street<br>Aurora, IL 60504

#### PROXY STATEMENT

#### FOR

#### SPECIAL MEETING OF STOCKHOLDERS

#### TO BE HELD JUNE 18 , 2025

#### FIRST MAILED ON OR ABOUT JUNE 5 , 2025

#### Date, Time and Place of the Special Meeting
The enclosed proxy is solicited by the Board of Directors (the "**<u>Board</u>**") of Goldenstone Acquisition Corp. (the "**<u>Company</u>**," "**<u>Goldenstone</u>"** or "**<u>we</u>**"), a Delaware corporation, in connection with the Special Meeting of Stockholders to be held on June 18, 2025 at 11:00 a.m. Eastern time for the purposes set forth in the accompanying Notice of Meeting. The Company will be holding the Special Meeting, and any adjournments thereof, via teleconference using the following dial-in information:

Telephone access (listen-only):<br>Within the U.S. and Canada:<br>1 800-450-7155 (toll-free)<br>Outside of the U.S. and Canada:<br>+1 857-999-9155 (standard rates apply)<br>Meeting ID: 7340278#

The principal executive office of the Company is 4360 E., New York Street, Aurora, IL 60504, is (330) 352-7788.

#### FORWARD LOOKING STATEMENTS
This proxy statement contains statements that are forward-looking and as such are not historical facts. This includes, without limitation, statements regarding the plans and objectives of management for future operations, including as they relate to a business combination. These statements constitute projections, forecasts and forward-looking statements, and are not guarantees of performance. They involve known and unknown risks, uncertainties, assumptions and other factors that may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by these statements. Such statements can be identified by the fact that they do not relate strictly to historical or current facts. When used in this proxy statement, words such as "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "might," "plan," "possible," "potential," "predict," "project," "should," "strive," "would" and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. When the Company discusses its strategies or plans, including as they relate to a business combination, it is making projections, forecasts or forward-looking statements. Such statements are based on the beliefs of, as well as assumptions made by and information currently available to, the Company's management. Actual results and stockholders' value will be affected by a variety of risks and factors, including, without limitation, international, national and local economic conditions, merger, acquisition and business combination risks, financing risks, geo-political risks, acts of terror or war, and in other reports the Company files with the SEC. Many of the risks and factors that will determine these results and stockholders' value are beyond the Company's ability to control or predict.

All such forward-looking statements speak only as of the date of this proxy statement. The Company expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in the Company's expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. All subsequent written or oral forward-looking statements attributable to us or persons acting on the Company's behalf are qualified in their entirety by this "Forward-Looking Statements" section.

#### Purpose of the Special Meeting
At the Special Meeting, you will be asked to consider and vote upon the following matters:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. Proposal 1 — A proposal to amend the Company's amended and restated certificate of incorporation, as amended on September 21, 2023 and June 18, 2024 (the **"<u>Charter</u>"**), to extend the date by which the Company has to consummate a business combination up to 12 times (the "**<u>Third Extension Amendment</u>"**), each such extension for an additional one (1) month period (each an **"<u>Extension</u>"**), from June 21, 2025 to June 21, 2026 (such date actually extended being referred to as the **"<u>Extended Date</u>"**) (we refer to this proposal as the **"<u>Third Extension Amendment Proposal</u>"**). A copy of the proposed Third Extension Amendment is attached hereto as <u>Annex A</u>;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Proposal 2 — A proposal to amend the Company's investment management trust agreement, dated as of March 16, 2022, as amended on September 21, 2023 and June 18, 2024 (the "**<u>Trust Agreement</u>**"), by and between the Company and Continental Stock Transfer & Trust Company, to provide that the time for the Company to complete its initial business combination (the "**<u>Business Combination Period</u>**") under the Trust Agreement from June 21, 2025 to June 21, 2026 (the "**<u>Third Trust Amendment</u>**") provided that the Company deposits into the trust account established in connection with the Company's initial public offering (the "**<u>Trust Account</u>**") the sum of $50,000 for each month extended (we refer to this proposal as the "**<u>Third Trust Amendment Proposal</u>**"). A copy of the proposed Third Trust Amendment is attached hereto as <u>Annex B</u>; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Proposal 3 — A proposal to direct the chairman of the Special Meeting to adjourn the Special Meeting to a later date or dates (the "**<u>Adjournment</u>**"), if necessary, to permit further solicitation and vote of proxies if, based upon the tabulated vote at the time of the Special Meeting, there are not sufficient votes to approve Proposal 1 or Proposal 2 or as otherwise determined by the chairman of the Special Meeting (we refer to this proposal as the "**<u>Adjournment Proposal</u>**"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. To act on such other matters as may properly come before the Special Meeting or any adjournments or postponements thereof.

The Charter and the Trust Agreement initially provided for a 12-month Business Combination Period from the date of completion of the Company's initial public offering (until March 21, 2023) and further provided that the Company could extend the Business Combination Period for up to 9 additional months in three-month increments provided that the Company deposited into trust $575,000 for each three-month extension. On September 21, 2023, the Charter and the Trust Agreement were amended to extend the date by which the Company has to consummate a business combination up to nine (9) times, each such extension for an additional one (1) month period, from September 21, 2023 to June 21, 2024, provided that the Company deposits into the trust the sum of $100,000 for each one month extension. On June 18, 2024, the Charter and the Trust Agreement were amended again to extend the date by which the Company has to consummate a business combination up to twelve (12) times, each such extension for an additional one (1) month period, from June 21, 2024 to June 21, 2025, provided that the Company deposits into the trust the sum of $50,000 for each one month extension. As of the date of this proxy statement, the Company has extended the Business Combination Period to its current expiration of June 21, 2025.

On June 26, 2024, the Company entered into a Business Combination Agreement (as amended, the "BCA") with Infintium Fuel Cell Systems, Inc., a Delaware corporation (the "Infintium"), Pacifica Acquisition Corp., a Delaware corporation ("Merger Sub") and wholly-owned subsidiary of the Company, and Yan (Chris) Feng, solely in his capacity as representative, agent and attorney-in-fact of the Infintium Securityholders (the "Securityholder Representative," and, together with the Company, Infintium, Merger Sub, the "Parties"). Pursuant to the BCA, Merger Sub will merge with and into Infintium (the "Business Combination"), with Infintium surviving the Merger as a wholly-owned subsidiary of the Company. In connection with the Business Combination, the Company will change its name to "Infintium Fuel Cell Systems Holdings, Inc." The purpose of the Third Extension Amendment Proposal and Third Trust Amendment Proposal is to allow the Company an option to further extend the time to complete a Business Combination. Without the Third Extension Amendment and the Third Trust Amendment, the Company will not be able to complete the Business Combination on or before June 21, 2025.

The Company's Board has determined that it is in the best interests of Goldenstone to seek an extension of the Termination Date and have the Company's stockholders approve the Third Extension Amendment Proposal and Third Trust Amendment Proposal because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved and the currently required extension payments are not made.

If the Board otherwise determines that the Company will not be able to consummate an initial business combination on or before the final Extended Date, the Company would wind up its affairs and redeem 100% of the outstanding Public Shares in accordance with the same procedures set forth below that would be applicable if the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are not approved. The Board is under no obligation to effect a monthly extension and if an extension is not done, the Company would be required to liquidate.

Each of the Third Extension Amendment Proposal, the Third Trust Amendment Proposal, and the Adjournment Proposal is more fully described below in this Proxy Statement.

Subject to applicable securities laws (including with respect to material nonpublic information), the Company or the Sponsor or any of their respective affiliates may (i) purchase public shares from institutional and other investors (including those who elect to redeem, or indicate an intention to redeem, public shares), (ii) enter into transactions with such investors and others to provide them with incentives to not redeem their public shares, or (iii) execute agreements to purchase such public shares from such investors or enter into non-redemption agreements. In the event that the Sponsor or any of its affiliates purchase public shares in situations in which the tender offer rules restrictions on purchases would apply, they (a) would purchase the public shares at a price no higher than the price offered through the Company's redemption process (i.e., approximately $11.81 per share, based on the amounts held in the Trust Account as of May 31, 2025, without giving effect to interest that may be withdrawn to pay tax obligations; (b) would represent in writing that such public shares will not be voted in favor of approving the Third Extension Amendment proposal; and (c) would waive in writing any redemption rights with respect to the public shares so purchased.

To the extent any such purchases by the Sponsor or its affiliates are made in situations in which the tender offer rules restrictions on purchases apply, we will disclose in a Current Report on Form 8-K prior to the Special Meeting the following: (i) the number of public shares purchased outside of the redemption offer, along with the purchase price(s) for such public shares; (ii) the purpose of any such purchases; (iii) the impact, if any, of the purchases on the likelihood that the Third Extension Amendment proposal will be approved; (iv) the identities of the securityholders

who sold to the Sponsor or any of its affiliates (if not purchased on the open market) or the nature of the securityholders (e.g., 5% security holders) who sold such public shares; and (v) the number of shares of common stock for which the Company has received redemption requests pursuant to its redemption offer.

The purpose of such share purchases and other transactions would be to increase the likelihood of otherwise limiting the number of public shares electing to redeem. If such transactions are effected, the consequence could be to cause the Third Extension Amendment proposal to be effectuated in circumstances where such effectuation could not otherwise occur. Consistent with SEC guidance, purchases of shares by the persons described above would not be permitted to be voted for Third Extension Amendment proposal at the Special Meeting and could decrease the chances that the Third Extension Amendment proposal would be approved. In addition, if such purchases are made, the public "float" of our securities and the number of beneficial holders of our securities may be reduced, possibly making it difficult to maintain or obtain the quotation, listing or trading of our securities on a national securities exchange.

The Company hereby represents that any Company securities purchased by the Sponsor or any of its affiliates in situations in which the tender offer rules restrictions on purchases would apply would not be voted in favor of approving the Third Extension Amendment proposal.

**You are not being asked to vote on any business combination at this time. If the Third Extension Amendment and the Third Trust Amendment are implemented and you do not elect to redeem your Public Shares now, you will retain the right to vote on the business combination when it is submitted to stockholders and the right to redeem your Public Shares into a pro rata portion of the Trust Account in the event the business combination is approved and completed (as long as your election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought) or the Company has not consummated the business combination by the Extended Date.**

In connection with the Third Extension Amendment, public stockholders may elect (the "**<u>Election</u>**") to redeem their public shares ("**<u>Public Shares</u>**") for a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company to pay franchise and income taxes, divided by the number of then outstanding Public Shares, regardless of whether such public stockholders vote "FOR" or "AGAINST" the Third Extension Amendment Proposal, the Third Trust Amendment Proposal, and the Adjournment Proposal, and an Election can also be made by public stockholders who do not vote, or do not instruct their broker or bank how to vote, at the Special Meeting. Public stockholders may make an Election regardless of whether such public stockholders were holders as of the Record Date. If the Third Extension Amendment Proposal, the Third Trust Amendment Proposal are approved by the requisite vote of stockholders, the remaining holders of Public Shares will retain their right to redeem their Public Shares when the Business Combination is submitted to the stockholders, subject to any limitations set forth in the Charter, as amended by the Third Extension Amendment (as long as their election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought). Each redemption of shares by our public stockholders will decrease the amount in the Trust Account, which held approximately $18,847,241 of marketable securities as of May 31, 2025. In addition, public stockholders who do not make the Election would be entitled to have their shares redeemed for cash if the Company has not completed a business combination by the Extended Date. The closing price of the Company's common stock on the Record Date was $11.90. The Company cannot assure stockholders that they will be able to sell their shares of the Company's common stock in the open market, even if the market price per share is higher than the redemption price stated above, as there may not be sufficient liquidity in its securities when such stockholders wish to sell their shares.

The Sponsor and our officers and directors hold the right to vote over an aggregate of 1,788,750 shares of common stock which include 1,437,500 shares of our common stock, which we refer to as the "**<u>Founder Shares</u>**", that were issued prior to the IPO and 351,250 shares of common stock that make up part of the units, which we refer to as the "**<u>Private Placement Units</u>**", that were purchased by the Sponsor in a private placement that occurred simultaneously with the completion of the IPO.

**To exercise your redemption rights, you must tender your shares to the Company's transfer agent at least two business days prior to the Special Meeting (or June 16, 2025). You may tender your shares by either delivering your share certificate to the transfer agent or by delivering your shares electronically using the Depository Trust Company's DWAC (Deposit/Withdrawal At Custodian) system. If you hold your shares in street name, you will need to instruct your bank, broker or other nominee to withdraw the shares from your account in order to exercise your redemption rights.**

If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are not approved and we do not consummate a business combination by June 21, 2025, in accordance with the Charter and Trust Agreement, we will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem 100% of the outstanding Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including any interest not previously released to us (net of taxes payable), divided by the number of then outstanding Public Shares, which redemption will completely extinguish public stockholders' rights as stockholders (including the right to receive further liquidation distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of our remaining stockholders and the Board, dissolve and liquidate, subject (in the case of (ii) and (iii) above) to our obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. There will be no distribution from the Trust Account with respect to our warrants or rights, which will expire worthless in the event of our winding up. In the event of a liquidation, the Sponsor, our officers and directors and our other initial stockholders will not receive any monies held in the Trust Account as a result of their ownership of the Founder Shares or the Private Placement Units.

Subject to the foregoing, the affirmative vote of at least a majority of the shares of the Company's outstanding common stock, including the Founder Shares, will be required to approve the Third Extension Amendment Proposal and the Third Trust Amendment Proposal. The Board will abandon and not implement the Third Extension Amendment and the Third Trust Amendment unless our stockholders approve both the Third Extension Amendment and the Third Trust Amendment. This means that if one proposal is approved by the stockholders and the other proposal is not, neither proposal will take effect. Notwithstanding stockholder approval of the Third Extension Amendment Proposal and the Third Trust Amendment Proposal, the Board will retain the right to abandon and not implement the Third Extension Amendment and Third Trust Amendment at any time without any further action by our stockholders.

**After careful consideration of all relevant factors, the Board has determined that each of the proposals are advisable and recommends that you vote or give instruction to vote "FOR" such proposals.**

#### Voting Rights and Revocation of Proxies
The Board has fixed the close of business on June 3, 2025 (the "**Record Date**") as the date for determining the Company stockholders entitled to receive notice of and vote at the Special Meeting and any adjournments or postponements thereof. Only holders of record of the Company's common stock on that date are entitled to have their votes counted at the Special Meeting or any adjournments or postponements thereof.

The shares of common stock represented by all validly executed proxies received in time to be taken to the Special Meeting and not previously revoked will be voted at the meeting. This proxy may be revoked by the stockholder at any time prior to its being voted by filing with the Secretary of the Company either a notice of revocation or a duly executed proxy bearing a later date.

#### Dissenters' Right of Appraisal
Holders of shares of our common stock do not have appraisal rights under Delaware law or under the governing documents of the Company in connection with this solicitation.

#### Outstanding Shares and Quorum
The number of outstanding shares of common stock on the Record Date entitled to vote at the Special Meeting is 3,442,121 shares. Each share of common stock is entitled to one vote. The presence in person or by proxy at the Special Meeting of the holders of at least a majority of the shares of capital stock issued and outstanding and entitled to vote, represented in person or by proxy, shall constitute a quorum. There is no cumulative voting. Shares that abstain or for which the authority to vote is withheld on certain matters (so-called "broker non-votes") will be treated as present for quorum purposes on all matters.

#### Broker Non-Votes
Holders of shares of our common stock that are held in street name must instruct their bank or brokerage firm that holds their shares how to vote their shares. If a stockholder does not give instructions to his or her bank or brokerage firm, it will nevertheless be entitled to vote the shares with respect to "routine" items, but it will not be permitted to vote the shares with respect to "non-routine" items. In the case of a non-routine item, such shares will be considered "broker non-votes" on that proposal.

Proposal 1 (Third Extension Amendment) is a matter that we believe will be considered "non-routine."

Proposal 2 (Third Trust Amendment) is a matter that we believe will be considered "non-routine."

Proposal 3 (Adjournment) is a matter that we believe will be considered "routine."

Banks or brokerages cannot use discretionary authority to vote shares on Proposals 1, 2 or 3 if they have not received instructions from their clients. Please submit your vote instruction form so your vote is counted.

#### Required Votes for Each Proposal to Pass
Assuming the presence of a quorum at the Special Meeting:

---

| | | |
|:---|:---|:---|
|  **Proposal** | **Vote Required** | **Broker <br>Discretionary <br>Vote Allowed** |
|  Third Extension Amendment | Majority of outstanding shares | No |
|  Third Trust Amendment | Majority of outstanding shares | No |
|  Adjournment | Majority of the outstanding shares represented by virtual attendance or by proxy and entitled to vote thereon at the Special Meeting | Yes |

---

#### Factors to Consider
When you consider the recommendation of the Board, you should consider, among other things, the following benefits and detriments of the proposals to you as the public stockholders:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are approved, the Sponsor, or its affiliates, or assignees will only deposit in the Trust Account $50,000 per monthly extension as interest-free loans to be repaid by the Company upon consummation of an initial business combination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Public stockholders may seek to have their shares redeemed regardless of whether they vote for or against the proposals and whether or not they are holders of our common stock as of the Record Date. (See "Redemption Rights" below).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Each redemption of shares by our public stockholders will decrease the amount in the Trust Account, which held approximately $18,847,241 of marketable securities as of May 31, 2025.

#### Interests of the Company's Directors and Officers
When you consider the recommendation of the Board, you should keep in mind that the Sponsor and our officers and directors have interests that may be different from, or in addition to, your interests as a stockholder. These interests include, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• unless the Company consummates an initial business combination, the Company's officers and directors and the Sponsor will not receive reimbursement for any out-of-pocket expenses incurred by them to the extent that such expenses exceed the amount of available proceeds from the IPO and private placement not deposited in the Trust Account;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• with certain limited exceptions, 50% of the Founder Shares will not be transferred, assigned, sold or released from escrow until the earlier of six months after the date of the consummation of our initial business combination and the date the closing price of our common stock equals or exceeds $12.50 per share (as

adjusted for stock splits, stock dividends, reorganizations and recapitalizations) for any 20 trading days within any 30-trading day period commencing after our initial business combination and the remaining 50% of the insider shares will not be transferred, assigned, sold or released from escrow until six months after the date of the consummation of our initial business combination or earlier in either case if, subsequent to our initial business combination, we complete a liquidation, merger, stock exchange or other similar transaction which results in all of our shareholders having the right to exchange their shares of common stock for cash, securities or other property;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the Sponsor will benefit from the completion of a business combination and may be incentivized to complete an acquisition of a less favorable target company or on terms less favorable to public stockholders rather than liquidate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• because of these interests, our initial stockholders could benefit from the completion of a business combination that is not favorable to the Company's public stockholders and may be incentivized to complete a business combination of a less favorable target company or on terms less favorable to public stockholders rather than liquidate. Based on the difference in the purchase price of $0.017 per share that the Sponsor paid for the Founder Shares, as compared to the purchase price of $10.00 per public unit sold in the IPO, the Sponsor may earn a positive rate of return even if the share price of the combined company after the closing of the business combination falls below the price initially paid for the units in the IPO and the public stockholders experience a negative rate of return following the closing of the business combination;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the fact that the Sponsor and directors and executive officers currently hold 351,250 Private Placement Units that were purchased at a price of $10 per Private Placement Unit, or an aggregate value of $3,512,500, and that have no redemption rights upon the Company's liquidation and will be worthless if no business combination is effected; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the fact that the Sponsor has agreed not to redeem any of the Founder Shares in connection with a stockholder vote to approve a proposed initial business combination.

Additionally, if the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are approved and the Third Extension Amendment and the Third Trust Amendment are implemented and the Company consummates an initial business combination, our officers and directors may have additional interests that would be described in the proxy statement for such transaction.

#### Voting Procedures
Each share of our common stock that you own in your name entitles you to one vote on each of the proposals for the Special Meeting. Your proxy card shows the number of shares of our common stock that you own.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• You can vote your shares in advance of the Special Meeting by completing, signing, dating and returning the enclosed proxy card in the postage-paid envelope provided. If you hold your shares in "street name" through a broker, bank or other nominee, you will need to follow the instructions provided to you by your broker, bank or other nominee to ensure that your shares are represented and voted at the Special Meeting. If you vote by proxy card, your "proxy," whose name is listed on the proxy card, will vote your shares as you instruct on the proxy card. If you sign and return the proxy card but do not give instructions on how to vote your shares, your shares of our common stock will be voted as recommended by the Board. The Board recommends voting "FOR" the Third Extension Amendment Proposal, the Third Trust Amendment Proposal, and the Adjournment Proposal.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• You can attend the Special Meeting virtually and vote telephonically even if you have previously voted by submitting a proxy. However, if your shares of common stock are held in the name of your broker, bank or other nominee, you must get a proxy from the broker, bank or other nominee. That is the only way we can be sure that the broker, bank or nominee has not already voted your shares of common stock.

#### Solicitation of Proxies
Your proxy is being solicited by the Board on the proposals being presented to stockholders at the Special Meeting. The Company has agreed to pay Advantage Proxy, Inc., our proxy solicitor, a customary fee of $8,500 and out-of-pocket expenses in connection with the Special Meeting. The Company will reimburse Advantage Proxy for reasonable out-of-pocket expenses and will indemnify Advantage Proxy and its affiliates against certain claims, liabilities, losses, damages and expenses. In addition to these mailed proxy materials, our directors and officers may also solicit proxies in person, by telephone or by other means of communication. These parties will not be paid any additional compensation for soliciting proxies. We may also reimburse brokerage firms, banks and other agents for the cost of forwarding proxy materials to beneficial owners. You may contact Advantage Proxy at:

#### ADVANTAGE PROXY, INC.<br> P.O. BOX 10904<br>YAKIMA, WA 98909<br>Toll Free: 877-870-8565<br>Collect: 206-870-8565
The cost of preparing, assembling, printing and mailing this Proxy Statement and the accompanying form of proxy, and the cost of soliciting proxies relating to the Special Meeting, will be borne by the Company.

Some banks and brokers have customers who beneficially own common stock listed of record in the names of nominees. We intend to request banks and brokers to solicit such customers and will reimburse them for their reasonable out-of-pocket expenses for such solicitations. If any additional solicitation of the holders of our outstanding common stock is deemed necessary, we (through our directors and officers) anticipate making such solicitation directly.

#### Delivery of Proxy Materials to Households
Only one copy of this Proxy Statement will be delivered to an address where two or more stockholders reside with the same last name or whom otherwise reasonably appear to be members of the same family based on the stockholders' prior express or implied consent.

We will deliver promptly upon written or oral request a separate copy of this Proxy Statement. If you share an address with at least one other stockholder, currently receive one copy of our Proxy Statement at your residence, and would like to receive a separate copy of our Proxy Statement for future stockholder meetings of the Company, please specify such request in writing and send such written request to Goldenstone Acquisition Limited, 4360 E. New York Street, Aurora, IL 60504; Attention: Secretary, or call the Company promptly at 330-352-7788.

If you share an address with at least one other stockholder and currently receive multiple copies of our proxy statement, and you would like to receive a single copy of our future proxy statements, please specify such request in writing and send such written request to Goldenstone Acquisition Limited, 4360 E. New York Street, Aurora, IL 60504; Attention: Secretary.

#### Redemption Rights
Pursuant to our current Charter, any holders of our Public Shares may demand that such shares be converted for a pro rata share of the aggregate amount on deposit in the Trust Account, less taxes payable, calculated as of two business days prior to the Special Meeting. Public stockholders may seek to have their shares redeemed regardless of whether they vote for or against the proposals and whether or not they are holders of our common stock as of the Record Date. If you properly exercise your redemption rights, your shares will cease to be outstanding and will represent only the right to receive a pro rata share of the aggregate amount on deposit in the Trust Account that holds the proceeds of the IPO (calculated as of two business days prior to the Special Meeting). For illustrative purposes, based on funds in the Trust Account of approximately $18,847,241 as of May 31, 2025, the estimated per share conversion price would have been approximately $11.81 (including estimated interest income but without giving effect to interest that may be withdrawn to pay tax obligations).

In order to exercise your redemption rights, you must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• submit a request in writing prior to 5:00 p.m., Eastern time on June 16, 2025 (two business days before the Special Meeting) that we convert your Public Shares for cash to Continental Stock Transfer & Trust Company, our transfer agent, at the following address:

Continental Stock Transfer & Trust Company<br>1 State Street, 30<sup>th</sup> Floor<br>Aurora, IL 10004<br>Attn: SPAC Redemption Team<br>E-mail: spacredemptions@continentalstock.com

and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• deliver your Public Shares either physically or electronically through The Depository Trust Company to our transfer agent by 5:00 p.m. at least two business days before the Special Meeting. Stockholders seeking to exercise their redemption rights and opting to deliver physical certificates should allot sufficient time to obtain physical certificates from the transfer agent and time to effect delivery. It is our understanding that stockholders should generally allot at least two weeks to obtain physical certificates from the transfer agent. However, we do not have any control over this process and it may take longer than two weeks. Stockholders who hold their shares in street name will have to coordinate with their broker, bank or other nominee to have the shares certificated or delivered electronically. If you do not submit a written request and deliver your Public Shares as described above, your shares will not be redeemed.

Any demand for redemption, once made, may be withdrawn at any time until the deadline for exercising redemption requests (and submitting shares to the transfer agent) and thereafter, with our consent. If you delivered your shares for redemption to our transfer agent and decide within the required timeframe not to exercise your redemption rights, you may request that our transfer agent return the shares (physically or electronically). You may make such request by contacting our transfer agent at the phone number or address listed above.

Prior to exercising redemption rights, stockholders should verify the market price of our common stock, as they may receive higher proceeds from the sale of their common stock in the public market than from exercising their redemption rights if the market price per share is higher than the redemption price. We cannot assure you that you will be able to sell your shares of our common stock in the open market, even if the market price per share is higher than the redemption price stated above, as there may not be sufficient liquidity in our common stock when you wish to sell your shares.

If you exercise your redemption rights, your shares of our common stock will cease to be outstanding immediately prior to the Special Meeting (assuming the Third Extension Amendment Proposal and Third Trust Amendment Proposal are approved) and will only represent the right to receive a pro rata share of the aggregate amount on deposit in the Trust Account. You will no longer own those shares and will have no right to participate in, or have any interest in, the future growth of the Company, if any. You will be entitled to receive cash for these shares only if you properly and timely request redemption.

If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are not approved and we do not consummate an initial business combination by June 21, 2025 we will be required to dissolve and liquidate the Trust Account by returning then remaining funds in such account to the public stockholders and our warrants to purchase common stock will expire worthless.

Holders of outstanding units must separate the units into the underlying Public Shares and public warrants prior to exercising redemption rights with respect to the Public Shares.

If you hold units registered in your own name, you must deliver the certificate for such units to Continental Stock Transfer & Trust Company with written instructions to separate such units into Public Shares and public warrants. This must be completed far enough in advance to permit the mailing of the Public Share certificates back to you so that you may then exercise your redemption rights with respect to the Public Shares upon the separation of the Public Shares from the units.

If a broker, dealer, commercial bank, trust company or other nominee holds your units, you must instruct such nominee to separate your units. Your nominee must send written instructions by facsimile to Continental Stock Transfer & Trust Company. Such written instructions must include the number of units to be split and the nominee holding such units. Your nominee must also initiate electronically, using DTC's deposit withdrawal at custodian ("**<u>DWAC</u>**") system, a withdrawal of the relevant units and a deposit of an equal number of Public Shares and public warrants. This must be completed far enough in advance to permit your nominee to exercise your conversion rights with respect to the Public Shares upon the separation of the Public Shares from the units. While this is typically done electronically the same business day, you should allow at least one full business day to accomplish the separation. If you fail to cause your Public Shares to be separated in a timely manner, you will likely not be able to exercise your redemption rights.

**RISK FACTORS**<sup>1</sup>

*You should carefully consider all of the risk described in our Annual Report on Form 10*-K *for the year ended March 31, 2024, as filed with the SEC on June 3, 2024, and other reports we file with the SEC, before making a decision to invest in our securities. Furthermore, if any of the following events occur, our business, financial condition, and operating results may be materially adversely affected or we could face liquidation. In that event, the trading price of our securities could decline, and you could lose all or part of your investment. The risks and uncertainties described in the aforementioned filings and below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business, financial condition, and operating results or result in our liquidation.*

#### There are no assurances that the Third Extension Amendment will enable us to complete an initial business combination.
Approving the Extension involves a number of risks. Even if the Extension is approved and implemented, the Company can provide no assurances that an agreement for an initial business combination will be signed or if signed that it will be consummated prior to the Extended Date. Our ability to consummate an initial business combination is dependent on a variety of factors, many of which are beyond our control. If the Extension is approved and implemented and the Company enters into a business combination agreement, the Company expects to seek stockholder approval of an initial business combination. We are required to offer public stockholders the opportunity to redeem public shares in connection with the Third Extension Amendment, and we will be required to offer public stockholders redemption rights again in connection with any stockholder vote to approve an initial business combination. Even if the Extension and an initial business combination are approved by our stockholders, it is possible that redemptions will leave us with insufficient cash to consummate a business combination on commercially acceptable terms, or at all. The fact that we will have separate redemption periods in connection with the Extension or a business combination vote could exacerbate these risks.

Other than in connection with a redemption offer or liquidation, our stockholders may be unable to recover their investment except through sales of our shares on the open market. The price of our shares may be volatile, and there can be no assurance that shareholders will be able to dispose of our shares at favorable prices, or at all.

***We may not be able to complete an initial business combination with a U.S. target company since such initial business combination may be subject to U.S. foreign investment regulations and review by a U.S. government entity such as the Committee on Foreign Investment in the United States ("CFIUS"), or ultimately prohibited.***

Our board of directors consists of five members. All but one of our directors is a citizen of the United States. In addition, two members of Goldenstone Capital LLC, one of our sponsor entities, are foreign persons. In addition, we have not yet entered into an agreement for our initial business combination. Therefore, we do not know whether the target or the nature of its business could make the transaction subject to U.S. foreign regulations or review by a U.S. government entity. As a result, it is possible that the Business Combination may be subject to a CFIUS review, the scope of which was expanded by the Foreign Investment Risk Review Modernization Act of 2018 ("**<u>FIRRMA</u>**"), to include certain non-passive, non-controlling investments in sensitive U.S. businesses and certain acquisitions of real estate even with no underlying U.S. business. FIRRMA, and subsequent implementing regulations that are now in force, also subjects certain categories of investments to mandatory filings. If the Business Combination falls within CFIUS's jurisdiction, we may determine that we are required to make a mandatory filing or that we will submit a voluntary notice to CFIUS, or to proceed with the initial business combination without notifying CFIUS and risk CFIUS intervention, before or after closing the initial business combination. CFIUS may decide to block or delay our initial business combination, impose conditions to mitigate national security concerns with respect to such initial business combination or order us to divest all or a portion of a U.S. business of the combined company without first obtaining CFIUS clearance, which may limit the attractiveness of or prevent us from pursuing certain initial business combination opportunities that we believe would otherwise be beneficial to us and our shareholders. As a result, the pool of potential targets with which we could complete an initial business combination may be limited and we may be adversely affected in terms of competing with other special purpose acquisition companies which do not have similar foreign ownership issues.

Moreover, the process of government review, whether by the CFIUS or otherwise, could be lengthy and we have limited time to complete our initial business combination. If we cannot complete an initial business combination by the Extended Date because the review process drags on beyond such timeframe or because our initial business combination is ultimately prohibited by CFIUS or another U.S. government entity, we may be required to liquidate. This will also cause you to lose the investment opportunity in a target company and the chance of realizing future gains on your investment through any price appreciation in the combined company.

***Goldenstone's securities have been delisted from Nasdaq, which could limit investors' ability to make transactions in our securities and subject us to additional trading restrictions.***

Up until March 25, 2025, our Units, Common Stock, Rights and Warrants were listed on Nasdaq. Upon the 36 month anniversary of our IPO, we received notification from Nasdaq that our securities were going to be delisted. Currently, our securities are quoted in the over-the-counter market. We cannot assure you that we will be able to meet those initial listing requirements at that time.

Our securities are quoted on an over-the-counter market. As a result, we may face significant material adverse consequences, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a limited availability of market quotations for our securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• reduced liquidity for our securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a determination that our Common Stock is a "penny stock" which will require brokers trading in our Common Stock to adhere to more stringent rules and possibly result in a reduced level of trading activity in the secondary trading market for our securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a limited amount of news and analyst coverage; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a decreased ability to issue additional securities or obtain additional financing in the future.

The National Securities Markets Improvement Act of 1996, which is a federal statute, prevents or preempts the states from regulating the sale of certain securities, which are referred to as "covered securities." Our Units, Common Stock, Rights and Warrants no longer qualify as covered securities under the statute. Although the states are preempted from regulating the sale of our securities, the federal statute does allow the states to investigate companies if there is a suspicion of fraud, and, if there is a finding of fraudulent activity, then the states can regulate or bar the sale of covered securities in a particular case. While we are not aware of a state having used these powers to prohibit or restrict the sale of securities issued by blank check companies, other than the State of Idaho, certain state securities regulators view blank check companies unfavorably and might use these powers, or threaten to use these powers, to hinder the sale of securities of blank check companies in their states. Further, we could be subject to regulation in each state in which we offer our securities.

***If we are deemed to be an "investment company" for purposes of the Investment Company Act, we would be required to institute burdensome compliance requirements and our activities would be severely restricted. As a result, in such circumstances, unless we are able to modify our activities so that we would not be deemed an investment company, we may abandon our efforts to complete an initial business combination and instead liquidate the Company.***

If we are deemed to be an investment company under the Investment Company Act of 1940 (the "Investment Company Act"), our activities may be restricted, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• restrictions on the nature of our investments; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• restrictions on the issuance of securities,

each of which may make it difficult to for us to complete an initial business combination.

In addition, we may have imposed upon us burdensome requirements, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• registration as an investment company with the SEC;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• adoption of a specific form of corporate structure; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• reporting, record keeping, voting, proxy and disclosure requirements and other rules and regulations that we are currently not subject to.

In order not to be regulated as an investment company under the Investment Company Act, unless we can qualify for an exclusion, we must ensure that we are engaged primarily in a business other than investing, reinvesting or trading of securities and that our activities do not include investing, reinvesting, owning, holding or trading "investment securities" constituting more than 40% of our assets (exclusive of U.S. government securities and cash items) on an unconsolidated basis. Our business is to identify and complete an initial business combination and thereafter to operate the post-transaction business or assets for the long term. We do not plan to buy businesses or assets with a view to resale or profit from their resale. We do not plan to buy unrelated businesses or assets or to be a passive investor.

We do not believe that our current and anticipated principal activities subject us to the Investment Company Act. To this end, the proceeds held in the Trust Account may only be held as cash, or invested in United States "government securities" within the meaning of Section 2(a)(16) of the Investment Company Act having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations. Pursuant to the trust agreement, the trustee is not permitted to invest in other securities or assets. By restricting the investment of the proceeds to these instruments or by holding the proceeds as cash, and by having a business plan targeted at acquiring and growing businesses for the long term (rather than on buying and selling businesses in the manner of a merchant bank or private equity fund), we intend to avoid being deemed an "investment company" within the meaning of the Investment Company Act. If we do not invest the proceeds as discussed above, we may be deemed to be subject to the Investment Company Act.

However, even if we invest the proceeds in United States "government securities" within the meaning of Section 2(a)(16) of the Investment Company Act having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations, we may be deemed to be an investment company. Additionally, in the adopting release for final rules issued on January 24, 2024 by the SEC (the "2024 SPAC Rules"), the SEC provided guidance that a SPAC's potential status as an "investment company" depends on a variety of factors, such as a SPAC's duration, asset composition, business purpose and activities and "is a question of facts and circumstances" requiring individualized analysis. The longer that the funds in the Trust Account are held in short-term U.S. government securities or in money market funds invested exclusively in such securities, the greater the risk that we may be considered an unregistered investment company, in which case we may be required to liquidate.

If we are deemed to be an investment company under the Investment Company Act, our activities would be severely restricted. In addition, we would be subject to burdensome compliance requirements. If we are deemed to be an investment company and subject to registration under, compliance with and regulation under the Investment Company Act, we would be subject to additional regulatory burdens and expenses for which we have not allotted funds. As a result, unless we are able to modify our activities so that we would not be deemed an investment company, we may abandon our efforts to complete an initial business combination and instead liquidate the Company. Were we to liquidate, our warrants would expire worthless, and our securityholders would lose the investment opportunity associated with an investment in the combined company, including any potential price appreciation of our securities.

***Changes to laws or regulations or in how such laws or regulations are interpreted or applied, or a failure to comply with any laws, regulations, interpretations or applications may adversely affect our business, including our ability to negotiate and complete our initial business combination.***

We are subject to laws and regulations, and interpretations and applications of such laws and regulations, of national, regional, state and local governments and applicable non-U.S. jurisdictions. In particular, we are required to comply with certain SEC and potentially other legal and regulatory requirements, and our consummation of an initial business combination may be contingent upon our ability to comply with certain laws, regulations, interpretations and applications and any post-business combination company may be subject to additional laws, regulations, interpretations and applications. Compliance with, and monitoring of, the foregoing may be difficult, time consuming and costly.

Those laws and regulations and their interpretation and application may also change from time to time, and those changes could have a material adverse effect on our business, including our ability to negotiate and complete an initial business combination. A failure to comply with applicable laws or regulations, as interpreted and applied, could have a material adverse effect on our business, including our ability to negotiate and complete our initial business combination.

The 2024 SPAC Rules, among other items, impose additional disclosure requirements in initial public offerings by SPACs and business combination transactions involving SPACs and private operating companies; amend the financial statement requirements applicable to business combination transactions involving such companies; update and expand guidance regarding the general use of projections in SEC filings, as well as when projections are disclosed in connection with proposed business combination transactions; increase the potential liability of certain participants in proposed business combination transactions; and could impact the extent to which SPACs could become subject to regulation under the Investment Company Act of 1940. The 2024 SPAC Rules may materially adversely affect our business, including our ability to negotiate and complete, and the costs associated with, our initial business combination, and results of operations.

***To mitigate the risk that we might be deemed to be an investment company for purposes of the Investment Company Act, we have instructed Continental, the trustee, to liquidate the investments held in the Trust Account and instead to hold the funds in the Trust Account in an interest bearing demand deposit account until the earlier of the consummation of an initial business combination or our liquidation. Following the liquidation of investments in the Trust Account, we receive reduced interest, if any, on the funds held in the Trust Account, which reduces the dollar amount our public shareholders would receive upon any redemption or liquidation of the Company.***

The funds in the Trust Account are held only in U.S. government treasury obligations with a maturity of 185 days or less or in money market funds investing solely in U.S. government treasury obligations and meeting certain conditions under Rule 2a-7 under the Investment Company Act. However, the longer that the funds in the Trust Account are held in short-term U.S. government securities or in money market funds invested exclusively in such securities, the greater the risk that we may be considered an unregistered investment company, in which case we may be required to liquidate. To mitigate the risk of us being deemed to be an unregistered investment company (including under the subjective test of Section 3(a)(1)(A) of the Investment Company Act) and thus subject to regulation under the Investment Company Act, we instructed Continental, the trustee with respect to the Trust Account, to liquidate the U.S. government treasury obligations or money market funds held in the Trust Account and thereafter to hold all funds in the Trust Account in an interest bearing demand deposit account at a bank until the earlier of the consummation of our Initial Business Combination or the liquidation of the Company. Following such liquidation, we receive reduced interest on the funds held in the Trust Account. However, interest previously earned on the funds held in the Trust Account still may be released to us to pay our taxes, if any, and certain other expenses as permitted. As a result, our decision to liquidate the investments held in the Trust Account and thereafter to hold all funds in the Trust Account in an interest bearing demand deposit at a bank reduces the dollar amount our Public Shareholders would receive upon any redemption or liquidation of the Company.

#### The Company may be affected by the Excise Tax included in the Inflation Reduction Act of 2022.
On August 16, 2022, President Biden signed into law the Inflation Reduction Act of 2022 (the "**<u>IR Act</u>**"), which, among other things, imposes a 1% excise tax on any publicly traded domestic corporation that repurchases its stock after December 31, 2022 (the "**<u>Excise Tax</u>**"). The Excise Tax is imposed on the fair market value of the repurchased stock, with certain exceptions. Because we are a Delaware corporation and our securities are trading on the OTC Markets, we will be a "covered corporation" within the meaning of the IR Act. While not free from doubt, absent any further guidance from the U.S. Department of the Treasury (the "**<u>Treasury</u>**"), which has been given authority to provide regulations and other guidance to carry out and prevent the abuse or avoidance of the Excise Tax, the Excise Tax may apply to any redemptions of our common stock after December 31, 2022, including redemptions in connection with an initial business combination, extension vote or otherwise, unless an exemption is available. The Excise Tax would be payable by the Company and not by the redeeming holders. Generally, issuances of securities by us in connection with an initial business combination transaction (including any PIPE transaction at the time of an initial business combination), as well as any other issuances of securities not in connection with our initial business combination, would be expected to reduce the amount of the Excise Tax in connection with redemptions occurring in the same calendar year, but the number of securities redeemed may exceed the number of securities issued.

Whether and to what extent the Company would be subject to the Excise Tax in connection with a Business Combination, extension vote or otherwise would depend on a number of factors, including (i) the fair market value of the redemptions and repurchases in connection with the business combination, extension vote or otherwise, (ii) the structure of a business combination, (iii) the nature and amount of any "PIPE" or other equity issuances in connection with a business combination (or otherwise issued not in connection with a Business Combination but issued within the same taxable year of a business combination) and (iv) the content of regulations and other guidance from the Treasury. Consequently, the Excise Tax may make a transaction with us less appealing to potential business combination targets. Finally, based on recently issued interim guidance from the Internal Revenue Service and Treasury in Notice 2023-2, subject to certain exceptions, the Excise Tax should not apply in the event of our liquidation.

#### Payment of the Excise Tax if the Company is subject to the Excise Tax.
We will not be permitted to use the proceeds placed in the Trust Account and the interest earned thereon to pay any Excise Taxes imposed under the IR Act on the any future redemptions or stock buybacks by the Company.

To the extent that the Company does not have sufficient funds outside of the Trust Account to fund the payment of any excise tax that may be imposed in connection with the redemptions of the common stock in connection with the Extension, our Sponsor intends to contribute to us (which may be by working capital loan) funds necessary to make any such excise tax payment without using proceeds from the Trust Account or the interest earned thereon. However, we have not asked our Sponsor to reserve for any excise tax imposed under the IR Act, nor have we independently verified whether our Sponsor has sufficient funds to satisfy any such excise tax payment, and we believe that our Sponsor's only material assets are securities of the Company. Therefore, we cannot assure you that our Sponsor would be able to satisfy any excise tax payments.

#### SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
The following table sets forth certain information with respect to the beneficial ownership of our voting securities by (i) each person who is known by us to be the beneficial owner of more than 5% of our issued and outstanding shares of common stock, (ii) each of our officers and directors, and (iii) all of our officers and directors as a group as of June 3, 2025.

Unless otherwise indicated, we believe that all persons named in the table have sole voting and investment power with respect to all shares of common stock beneficially owned by them. The following table does not reflect record of beneficial ownership of any shares of common stock issuable upon exercise of the warrants or conversion of rights, as the warrants are not exercisable within 60 days of June 3, 2025 and the rights are not convertible within 60 days of June 3, 2025. The percentage ownership show below are based upon 3,442,121 shares of common stock outstanding on June 3, 2025. Certain other initial stockholders who are not directors own an additional 150,150 shares of common stock.

---

| | | |
|:---|:---|:---|
|  **Name and Address of Beneficial Owner<sup>(1)</sup>** | **Amount and <br>Nature of <br>Beneficial <br>Ownership** | **Approximate <br>Percentage of <br>Outstanding <br>Common Stock** |
|  Eddie Ni<sup>(2)</sup> | 1217195 | 35.38 |
|  Ray Chen<sup>(3)</sup> | 187813 | 5.46 |
|  Jonathan McKeage | 15000 | \* |
|  Pin Tai | 15000 | \* |
|  Nan Sun | 15000 | \* |
|  All current directors and executive officers as a group (6 individuals) | 1450788 | 42.15 |
|  **Five Percent Holders of Goldenstone** |  |  |
|  Hudson Bay Capital Management<sup>(</sup><sup>4</sup><sup>)</sup> | 322651 | 9.37 |
|  Eddie Ni<sup>(2)</sup> | 1217195 | 35.38 |
|  Ray Chen<sup>(3)</sup> | 187813 | 5.46 |

---

____________

\* less than 1%.

(1) Unless otherwise noted, the business address of each of the following entities or individuals is c/o Goldenstone Acquisition Limited, 4360 E. New York Street, Aurora, IL 60504.

(2) Consists of 842,350 shares owned by Goldenstone Capital, LLC, currently controlled by Eddie Ni, 200,000 shares owned by Goldenstone Holding, LLC and 175,625 shares included in private placement units purchased by Goldenstone Holding, LLC.

(3) Ray Chen owns and controls such shares through Raymond Charles Holding, LLC.

(4) Based on a Schedule 13G filed with the SEC on November 8, 2024. The business address of the reporting person is 28 Havemeyer Place, 2<sup>nd</sup> Floor, Greenwich, CT 06830.

#### PROPOSAL 1: THE THIRD EXTENSION AMENDMENT
This is a proposal to amend the Company's Charter to extend the date by which the Company has to consummate a business combination from June 21, 2025 to June 21, 2026, on a monthly basis, upon depositing $50,000 per one-month extension into the Trust Account. Currently $50,000 is required to be deposited into the Trust Account for a one-month extension from May 21, 2025 to June 21, 2025 and no further extensions may be made beyond that date.

All stockholders are encouraged to read the proposed Third Extension Amendment in its entirety for a more complete description of its terms. A copy of the proposed Third Extension Amendment is attached hereto as <u>Annex A</u>.

The Board believes that it is in the best interests of the Company and its shareholders that the Extension be obtained so that the Company will have an additional amount of time to consummate its initial business combination because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved and the currently required extension payments are not made. Without the Extension, the Company will not be able to complete an initial business combination on or before the Termination Date, and would be forced to liquidate. the Company intends to hold a special meeting at a future date to approve a business combination.

#### Reasons for the Third Extension Amendment Proposal
On June 26, 2024, the Company entered into a Business Combination Agreement (as amended, the "BCA") with Infintium Fuel Cell Systems, Inc., a Delaware corporation (the "Infintium"), Pacifica Acquisition Corp., a Delaware corporation ("Merger Sub") and wholly-owned subsidiary of the Company, and Yan (Chris) Feng, solely in his capacity as representative, agent and attorney-in-fact of the Infintium Securityholders (the "Securityholder Representative," and, together with the Company, Infintium, Merger Sub, the "Parties"). Pursuant to the BCA, Merger Sub will merge with and into Infintium (the "Merger"), with Infintium surviving the Merger as a wholly-owned subsidiary of the Company. In connection with the Merger, the Company will change its name to "Infintium Fuel Cell Systems Holdings, Inc." The purpose of the Third Extension Amendment Proposal and Third Trust Amendment Proposal is to allow the Company an option to further extend the time to complete a Business Combination. Without the Third Extension Amendment and the Third Trust Amendment, the Company believes that it will not be able to complete a Business Combination on or before June 21, 2025. The Company has determined that in order for us to potentially consummate an initial business combination, we will need to obtain the Extension to extend the date by which it has to consummate a business combination from June 21, 2025 to June 21, 2026, because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved.

The Charter currently provides that the Company has until June 21, 2025, the current Termination Date, to complete an initial business combination. Without the Extension, the Company will not be able to complete the Business Combination or any alternative initial business combination on or before the Termination Date and would be forced to liquidate.

The Company's Board has determined that it is in the best interests of Goldenstone to seek an extension of the Termination Date and have the Company's stockholders approve the Third Extension Amendment Proposal and Third Trust Amendment Proposal because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved.

If the Board otherwise determines that the Company will not be able to consummate an initial business combination by the final Extended Date, the Company would wind up its affairs and redeem 100% of the outstanding Public Shares in accordance with the same procedures set forth below that would be applicable if the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are not approved.

The Board believes that in order for us to potentially consummate an initial business combination, we will need to obtain the Extension because the Company will be required to dissolve if the Third Extension Amendment Proposal is not approved and the currently required extension payments are not made. The Third Extension Amendment Proposal is essential to allowing the Company additional time to consummate an initial business combination. Approval of the Third Extension Amendment Proposal is a condition to the implementation of the Extension.

The Board believes that it is in the best interests of the Company and its shareholders that the Company obtain the Extension in order to complete a Business Combination, which will provide significant benefits to its shareholders.

In connection with the Third Extension Amendment, public stockholders may elect (the "**<u>Election</u>**") to redeem their public shares ("**<u>Public Shares</u>**") for a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company to pay franchise and income taxes, divided by the number of then outstanding Public Shares, regardless of whether such public stockholders vote "FOR" or "AGAINST" the Third Extension Amendment Proposal and the Third Trust Amendment Proposal and the Adjournment Proposal, and an Election can also be made by public stockholders who do not vote, or do not instruct their broker or bank how to vote, at the Special Meeting. Public stockholders may make an Election regardless of whether such public stockholders were holders as of the Record Date. If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are approved by the requisite vote of stockholders, the remaining holders of Public Shares will retain their right to redeem their Public Shares when the Business Combination is submitted to the stockholders, subject to any limitations set forth in the Charter, as amended by the Third Extension Amendment (as long as their election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought). Each redemption of shares by our public stockholders will decrease the amount in the Trust Account, which held approximately $18,847,241 of marketable securities as of May 31, 2025. In addition, public stockholders who do not make the Election would be entitled to have their shares redeemed for cash if the Company has not completed a business combination by the Extended Date. The closing price of the Company's common stock on June 3, 2025 was $11.90. The Company cannot assure stockholders that they will be able to sell their shares of the Company's common stock in the open market, even if the market price per share is higher than the redemption price stated above, as there may not be sufficient liquidity in its securities when such stockholders wish to sell their shares.

The Sponsor and our officers and directors and initial stockholders hold the right to vote over an aggregate of 1,788,750 shares of common stock (51.7% of the outstanding shares) which include 1,437,500 shares of our common stock, which we refer to as the "**<u>Founder Shares</u>**", that were issued prior to the IPO and 351,250 shares of common stock that make up part of the units, which we refer to as the "**<u>Private Placement Units</u>**", that were purchased by the Sponsor in a private placement that occurred simultaneously with the completion of the IPO.

**To exercise your redemption rights, you must tender your shares to the Company's transfer agent at least two business days prior to the Special Meeting (or June 16, 2025). You may tender your shares by either delivering your share certificate to the transfer agent or by delivering your shares electronically using the Depository Trust Company's DWAC (Deposit/Withdrawal At Custodian) system. If you hold your shares in street name, you will need to instruct your bank, broker or other nominee to withdraw the shares from your account in order to exercise your redemption rights.**

#### If the Third Extension Amendment Proposal is Not Approved
If the Third Extension Amendment Proposal and Third Trust Amendment Proposal are not approved, and we do not consummate the Business Combination by June 21, 2025, we will be required to dissolve and liquidate our Trust Account by returning the then remaining funds in such account to the public stockholders and our warrants to purchase Common Stock will expire worthless.

The Company's initial stockholders have waived their rights to participate in any liquidation distribution with respect to their insider shares. There will be no distribution from the Trust Account with respect to the Company's warrants or rights, which will expire worthless in the event we wind up. The Company will pay the costs of liquidation from its remaining assets outside of the Trust Account.

#### If the Third Extension Amendment Is Approved
If the Third Extension Amendment and Third Trust Amendment are approved, the amendment to the Charter in the form of <u>Annex A</u> hereto will be executed and the Trust Account will not be disbursed except in connection with our completion of the Business Combination or in connection with our liquidation if we do not complete an initial business combination by the applicable termination date. The Company will then continue to attempt to consummate a business combination until the applicable termination date or until the Company's Board of Directors determines in its sole discretion that it will not be able to consummate an initial business combination by the applicable termination date as described below and does not wish to seek an additional extension.

If the Third Extension Amendment is approved, public stockholders may elect (the "**<u>Election</u>**") to redeem their shares for a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company to pay franchise and income taxes, divided by the number of then outstanding Public Shares, regardless of whether such public stockholders vote "FOR" or "AGAINST" the Third Extension Amendment Proposal, the Third Trust Amendment Proposal and the Adjournment Proposal, and an Election can also be made by public stockholders who do not vote, or do not instruct their broker or bank how to vote, at the Special Meeting. Public stockholders may make an Election regardless of whether such public stockholders were holders as of the Record Date.

#### Required Vote
Subject to the foregoing, the affirmative vote of at least a majority of the Company's outstanding Common Stock, including the Common Stock owned by our initial stockholders, will be required to approve the Second Extension Amendment Proposal. Our Board will abandon and not implement the Third Extension Amendment unless our stockholders approve both the Third Extension Amendment Proposal and the Third Trust Amendment Proposal. This means that if one proposal is approved by the stockholders and the other proposal is not, neither proposal will take effect. Notwithstanding stockholder approval of the Third Extension Amendment and Third Trust Amendment, our Board will retain the right to abandon and not implement the Third Extension Amendment and Third Trust Amendment at any time without any further action by our stockholders.

Our Board has fixed the close of business on June 3, 2025, as the Record Date for determining the Company stockholders entitled to receive notice of and vote at the Special Meeting and any adjournment thereof. Only holders of record of the Company's Common Stock on that date are entitled to have their votes counted at the Special Meeting or any adjournment thereof.

**You are not being asked to vote on any business combination at this time. If the Third Extension Amendment is implemented and you do not elect to redeem your public shares now, you will retain the right to vote on a proposed business combination when it is submitted to stockholders and the right to redeem your public shares into a pro rata portion of the Trust Account in the event a business combination is approved and completed or the Company has not consummated the business combination by the applicable termination date.**

#### Recommendation
**The Company's Board of Directors recommends that you vote "FOR" the Third Extension Amendment Proposal.**

#### PROPOSAL 2: THE THIRD TRUST AMENDMENT PROPOSAL

#### The Third Trust Amendment
The proposed Third Trust Amendment Proposal would amend our existing Investment Management Trust Agreement dated as of March 16, 2022, as amended on September 21, 2023 and June 18, 2024 (the "**<u>Trust Agreement</u>**"), by and between the Company and Continental Stock Transfer & Trust Company (the "**<u>Trustee</u>**"), allowing the Company to extend the time to complete an initial business combination (the "**<u>Business Combination Period</u>**") under the Trust Agreement from June 21, 2025 to June 21, 2026 (the "**<u>Third Trust Amendment</u>**") provided that the Company deposits into the trust account established in connection with the Company's initial public offering (the "**<u>Trust Account</u>**") the sum of $50,000 for each one month extended (we refer to this proposal as the "**<u>Third Trust Amendment Proposal</u>**"). A copy of the proposed Third Trust Amendment is attached to this proxy statement as <u>Annex B</u>. All stockholders are encouraged to read the proposed amendment in its entirety for a more complete description of its terms.

#### Reasons for the Third Trust Amendment
The purpose of the Third Trust Amendment Proposal is to give the Company the right to extend the Business Combination Period from June 21, 2025 until as late as June 21, 2026 on a month-to-month basis, contingent upon the Company depositing $50,000 per monthly extension into the Trust Account.

The Charter and the Trust Agreement currently provide that the Company has the right to extend the Combination Period for a period of an additional one month from June 21, 2024 to June 21, 2025 by depositing into the Trust Account the amount of $50,000 for each one-month extension.

The Company and its board of directors have determined that there will not be sufficient time to enter into a business combination agreement, hold a special meeting to obtain the requisite stockholder approval of, and to consummate, an initial business combination before June 21, 2025 (its current termination date) which is the final deadline under the Charter and the Trust Agreement.

#### If the Third Trust Amendment Is Not Approved
If the Third Trust Amendment Proposal is not approved, and we do not consummate an initial business combination by June 21, 2025, we will be required to dissolve and liquidate our Trust Account by returning the then remaining funds in such account to the public stockholders. If we are required to liquidate the Company, our investors would not be able to realize the benefits of owning shares in a successor operating business, including the potential appreciation in the value of our shares and warrants following such a transaction, and our warrants and rights would expire worthless.

The Company's initial stockholders have waived their rights to participate in any liquidation distribution with respect to their insider shares. The Company will pay the costs of liquidation from its remaining assets outside of the Trust Account.

#### If the Third Trust Amendment Proposal Is Approved
If the Third Extension Amendment Proposal and the Third Trust Amendment Proposal are approved, the amendment to the Trust Agreement in the form of <u>Annex B</u> hereto will be executed and the Trust Account will not be disbursed except in connection with our completion of the initial business combination or in connection with our liquidation if we do not complete an initial business combination by the Extended Date. Our public shareholders will have the right to elect a redemption of their public shares. The Company will then continue to attempt to consummate an initial business combination until the Extended Date or until the Company's Board of Directors determines in its sole discretion that it will not be able to consummate an initial business combination by the Extended Date as described below and does not wish to seek an additional extension.

If the Third Extension Amendment is approved, public stockholders may elect (the "**<u>Election</u>**") to redeem their public shares ("**<u>Public Shares</u>**") for a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest not previously released to the Company to pay franchise and income taxes, divided by the number of then outstanding Public Shares, regardless of whether such public stockholders vote "FOR" or "AGAINST" the Third Extension Amendment Proposal, the Third Trust Amendment Proposal and the Adjournment Proposal, and an Election can also be made by public stockholders who do not vote, or do not instruct their broker or bank how to vote, at the Special Meeting. Public stockholders may make an Election regardless of whether such public stockholders were holders as of the Record Date.

#### Required Vote
Subject to the foregoing, the affirmative vote of a majority of the Company's outstanding shares of Common Stock, including the Founder Shares, will be required to approve the Third Trust Amendment Proposal. Our Board will abandon and not implement the Third Trust Amendment Proposal unless our stockholders approve both the Third Extension Amendment Proposal and Third Trust Amendment Proposal. This means that if one proposal is approved by the stockholders and the other proposal is not, neither proposal will take effect. Notwithstanding stockholder approval of the Third Extension Amendment Proposal and Third Trust Amendment Proposal, our Board will retain the right to abandon and not implement the Third Extension Amendment and Third Trust Amendment at any time without any further action by our stockholders.

**You are not being asked to vote on any business combination at this time. If the Third Trust Amendment is implemented and you do not elect to redeem your Public Shares now, you will retain the right to vote on an initial business combination when it is submitted to stockholders and the right to redeem your Public Shares into a pro rata portion of the Trust Account in the event a business combination is approved and completed (as long as your election is made at least two (2) business days prior to the meeting at which the stockholders' vote is sought) or the Company has not consummated the business combination by the applicable termination date.**

#### Recommendation
**The Company's board of directors recommends that you vote "FOR" the Third Trust Amendment Proposal.**

#### PROPOSAL 3: THE ADJOURNMENT PROPOSAL
The Adjournment Proposal, if adopted, will request the chairman of the Special Meeting (who has agreed to act accordingly) to adjourn the Special Meeting to a later date or dates to permit further solicitation of proxies or for such other reasons as determined by the chairman of the Special Meeting. If the Adjournment Proposal is not approved by our stockholders, the chairman of the meeting will not exercise his ability to adjourn the Special Meeting to a later date (which he would otherwise have under the Chairman) in the event, based on the tabulated votes, there are not sufficient votes at the time of the Special Meeting to approve the other proposals or as otherwise determined by the Chairman of the Special Meeting in his sole and absolute discretion.

If a majority of the shares present in person or by proxy and voting on the matter at the Special Meeting vote for the Adjournment Proposal, the chairman of the Special Meeting will exercise his or her power to adjourn the meeting as set out above.

#### Recommendation
**The Board recommends that you vote "FOR" the Adjournment Proposal.**

#### WHERE YOU CAN FIND MORE INFORMATION
The Company files annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains an Internet web site that contains reports, proxy and information statements, and other information regarding issuers, including us, that file electronically with the SEC. The public can obtain any documents that we file electronically with the SEC at *www.sec.gov*.

This Proxy Statement describes the material elements of relevant exhibits and other information attached as annexes to this Proxy Statement. Information and statements contained in this Proxy Statement are qualified in all respects by reference to the copy of the relevant document included as an annex to this document.

You may obtain additional copies of this Proxy Statement, at no cost, and you may ask any questions you may have about the Third Extension Amendment, the Third Trust Amendment, or the Adjournment by contacting us at the following address or telephone number:

Goldenstone Acquisition Limited<br>4360 E. New York Street<br>Aurora, IL 60504<br>(330) 352-7788

You may also obtain these documents at no cost by requesting them in writing or by telephone from the Company's proxy solicitation agent at the following address and telephone number:

#### ADVANTAGE PROXY<br> P.O. BOX 10904<br>YAKIMA, WA 98909<br>Toll Free: 877-870-8565<br>Collect: 206-870-8565
In order to receive timely delivery of the documents in advance of the Special Meeting, you must make your request for information no later than June 11, 2025.

**Annex A**

**AMENDMENT NO. 3 TO THE AMENDED AND RESTATED<br>CERTIFICATE OF INCORPORATION OF<br>GOLDENSTONE ACQUISITION LIMITED**

June [ ], 2025

Goldenstone Acquisition Limited, a corporation organized and existing under the laws of the State of Delaware (the "**<u>Corporation</u>**"), DOES HEREBY CERTIFY AS FOLLOWS:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The name of the Corporation is "Goldenstone Acquisition Limited" The original certificate of incorporation (the "**<u>Original Certificate</u>**") was filed with the Secretary of State of the State of Delaware on September 9, 2020.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. On March 16, 2022, in connection with the IPO, the Company adopted its Amended and Restated Certificate of Incorporation, which was subsequently amended on September 21, 2023 and June 18, 2024 (the "**<u>Amended and Restated Certificate</u>**").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. This Third Amendment to the Amended and Restated Certificate was duly adopted by the Board of Directors of the Corporation and the stockholders of the Corporation in accordance with Section 242 of the General Corporation Law of the State of Delaware.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The text of paragraph E of Article Sixth is hereby amended and restated to read in full as follows:

"In the event that the Corporation does not consummate a Business Combination by June 21, 2026 (such date being referred to as the "Termination Date"), the Corporation shall (i) cease all operations except for the purposes of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter redeem 100% of the IPO Shares for cash for a redemption price per share as described below (which redemption will completely extinguish such holders' rights as stockholders, including the right to receive further liquidation distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to approval of the Corporation's then stockholders and subject to the requirements of the GCL, including the adoption of a resolution by the board of directors pursuant to Section 275(a) of the GCL finding the dissolution of the Corporation advisable and the provision of such notices as are required by said Section 275(a) of the GCL, dissolve and liquidate the balance of the Corporation's net assets to its remaining stockholders, as part of the Corporation's plan of dissolution and liquidation, subject (in the case of (ii) and (iii) above) to the Corporation's obligations under the GCL to provide for claims of creditors and other requirements of applicable law. In such event, the per share redemption price shall be equal to a pro rata share of the Trust Account plus any pro rata interest earned on the funds held in the Trust Account and not previously released to the Corporation to pay its taxes divided by the total number of IPO Shares then outstanding"

Annex A-1

IN WITNESS WHEREOF, Goldenstone Acquisition Limited has caused this Amendment to the Amended and Restated Certificate to be duly executed in its name and on its behalf by an authorized officer as of the date first set above.

Goldenstone Acquisition Limited

<u> By: </u>         <br> <u> Name: </u>   <u> Eddie Ni </u>     <br> <u> Title: </u>   <u> Chief Executive Officer and Director </u>    

Annex A-2

**Annex B**

**PROPOSED AMENDMENT NO. 3 <br>TO THE<br>INVESTMENT MANAGEMENT TRUST AGREEMENT**

This Amendment No. 3 (this "Amendment"), dated as of June [ ], 2025, to the Investment Management Trust Agreement (as defined below) is made by and between Goldenstone Acquisition Limited (the "Company") and Continental Stock Transfer & Trust Company, as trustee ("Trustee"). All terms used but not defined herein shall have the meanings assigned to them in the Trust Agreement.

WHEREAS, the Company and the Trustee entered into an Investment Management Trust Agreement, dated March 16, 2022 (the "Trust Agreement"), as amended by Amendment No. 1 on September 21, 2024 and Amendment No. 2 on June 18, 2024;

WHEREAS, Section 1(i) of the Trust Agreement sets forth the terms that govern the liquidation of the Trust Account under the circumstances described therein; and

WHEREAS, at an Special Meeting of the Company held on June 18, 2025, the Company's stockholders approved (i) a proposal to amend the Company's amended and restated certificate of incorporation, as amended on September 21, 2023 and June 18, 2024 extending the date by which the Company has to consummate a business combination to June 21, 2026.

NOW THEREFORE, IT IS AGREED:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. Preamble. The third WHEREAS clause in the preamble of the Trust Agreement is hereby amended and restated to read as follows:

"WHEREAS, at an Special Meeting of the Company held on June 18, 2025, the Company's stockholders approved (i) a proposal to amend the Company's amended and restated certificate of incorporation, as amended on September 21, 2023 and June 18, 2024 (the "Amended A&R COI") extending the date by which the Company has to consummate a business combination from June 21, 2025 to June 21, 2026, on a month-to-month basis, upon the payment of $50,000 for each one-month extended into the Trust Account for such extension;"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Section 1(i) of the Trust Agreement is hereby amended and restated in its entirety as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Commence liquidation of the Trust Account only after and promptly after receipt of, and only in accordance with, the terms of a letter ("Termination Letter"), in a form substantially similar to that attached hereto as either <u>Exhibit A</u> or <u>Exhibit B</u>, signed on behalf of the Company by its President, Chief Executive Officer or Chairman of the Board and Secretary or Assistant Secretary and, in the case of a Termination Letter in a form substantially similar to that attached hereto as <u>Exhibit A</u>, acknowledged and agreed to by Maxim, and complete the liquidation of the Trust Account and distribute the Property in the Trust Account only as directed in the Termination Letter and the other documents referred to therein; provided, however, that in the event that a Termination Letter has not been received by the Trustee by June 21, 2026 (as applicable, the "Last Date"), the Trust Account shall be liquidated in accordance with the procedures set forth in the Termination Letter attached as <u>Exhibit B</u> hereto and distributed to the Public Stockholders as of the Last Date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Exhibit D. <u>Exhibit D</u> of the Trust Agreement is hereby deleted in its entirety.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. All other provisions of the Trust Agreement shall remain unaffected by the terms hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. This Amendment may be signed in any number of counterparts, each of which shall be an original and all of which shall be deemed to be one and the same instrument, with the same effect as if the signatures thereto and hereto were upon the same instrument. A facsimile signature or electronic signature shall be deemed to be an original signature for purposes of this Amendment.

Annex B-1

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6. This Amendment is intended to be in full compliance with the requirements for an Amendment to the Trust Agreement as required by Section 7(c) of the Trust Agreement, and every defect in fulfilling such requirements for an effective amendment to the Trust Agreement is hereby ratified, intentionally waived and relinquished by all parties hereto.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. This Amendment shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction.

*[signature page follows]*

Annex B-2

IN WITNESS WHEREOF, the parties have duly executed this Investment Management Trust Agreement as of the date first written above.

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| | |
|:---|:---|
|  CONTINENTAL STOCK TRANSFER & <br>TRUST COMPANY, as Trustee | CONTINENTAL STOCK TRANSFER & <br>TRUST COMPANY, as Trustee |
|  By: |  |
|  Name: | Francis E. Wolf, Jr. |
|  Title: | Vice President |
|  GOLDENSTONE ACQUISITION LIMITED | GOLDENSTONE ACQUISITION LIMITED |
|  By: |  |
|  Name: | Eddie Ni |
|  Title: | Chief Executive Officer and Director |

---

Annex B-3

#### PROXY CARD

#### GOLDENSTONE ACQUISITION LIMITED

#### THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS<br>FOR THE SPECIAL MEETING OF STOCKHOLDERS TO BE HELD ON<br>June 18 , 2025
The undersigned, revoking any previous proxies relating to these shares, hereby acknowledges receipt of the Notice and Proxy Statement, dated June 5, 2025, in connection with the Special Meeting to be held at 11:00 a.m. ET on June 18, 2025 via teleconference using the following dial-in information:

Telephone access (listen-only):<br>Within the U.S. and Canada: 1-800-450-7155 (toll-free)<br>Outside of the U.S. and Canada: +1 857-999-9155<br>(standard rates apply)<br>Conference ID: 7340278#

The undersigned hereby appoints Eddie Ni, as proxy of the undersigned, with power of substitution, to vote all shares of the common stock of Goldenstone Acquisition Limited. (the "**<u>Company</u>**") registered in the name provided, which the undersigned is entitled to vote at the Special Meeting of stockholders, and at any adjournments thereof, with all the powers the undersigned would have if personally present. Without limiting the general authorization hereby given, said proxy is instructed to vote or act as follows on the proposal set forth in this Proxy Statement.

**THIS PROXY, WHEN EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED "FOR" THE THIRD EXTENSION AMENDMENT PROPOSAL, THE THIRD TRUST AMENDMENT PROPOSAL, AND "FOR" THE ADJOURNMENT PROPOSAL.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1. PROPOSAL 1. THIRD EXTENSION AMENDMENT — APPROVAL OF A SECOND AMENDMENT TO THE COMPANY'S AMENDED AND RESTATED CERTIFICATE OF INCORPORATION, AS AMENDED, TO EXTEND THE DATE BY WHICH THE COMPANY HAS TO CONSUMMATE A BUSINESS COMBINATION FROM JUNE 21, 2025 TO JUNE 21, 2026.**

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| | | |
|:---|:---|:---|
|  **For** ☐ | **Against** ☐ | **Abstain** ☐ |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2. PROPOSAL 2. THIRD TRUST AMENDMENT — A PROPOSAL TO AMEND THE COMPANY'S INVESTMENT MANAGEMENT TRUST AGREEMENT, DATED AS OF MARCH 16, 2022, AS AMENDED ON SEPTEMBER 21, 2023, AND JUNE 18, 2024 BY AND BETWEEN THE COMPANY AND CONTINENTAL STOCK TRANSFER & TRUST COMPANY, TO PROVIDE THAT THE TIME FOR THE COMPANY TO COMPLETE ITS INITIAL BUSINESS COMBINATION UNDER THE TRUST AGREEMENT FROM JUNE 21, 2025 TO JUNE 21, 2026 PROVIDED THAT THE COMPANY DEPOSITS INTO THE TRUST ACCOUNT ESTABLISHED IN CONNECTION WITH THE COMPANY'S INITIAL PUBLIC OFFERING THE SUM OF $50,000 FOR EACH ONE MONTH EXTENDED.**

---

| | | |
|:---|:---|:---|
|  **For** ☐ | **Against** ☐ | **Abstain** ☐ |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3. PROPOSAL 3. ADJOURNMENT — APPROVAL TO DIRECT THE CHAIRMAN OF THE SPECIAL MEETING TO ADJOURN THE SPECIAL MEETING TO A LATER DATE OR DATES, IF NECESSARY, TO PERMIT FURTHER SOLICITATION OR AT THE DISCRETION OF THE CHAIRMAN.**

---

| | | |
|:---|:---|:---|
|  **For** ☐ | **Against** ☐ | **Abstain** ☐ |

---

**NOTE: IN HIS DISCRETION, THE PROXY HOLDER IS AUTHORIZED TO VOTE UPON SUCH OTHER MATTER OR MATTERS THAT MAY PROPERLY COME BEFORE THE SPECIAL MEETING AND ANY ADJOURNMENT(S) OR POSTPONEMENT(S) THEREOF.**

THIS PROXY WILL BE VOTED IN ACCORDANCE WITH THE SPECIFIC INDICATION ABOVE. IN THE ABSENCE OF SUCH INDICATION, THIS PROXY WILL BE VOTED "FOR" EACH PROPOSAL AND, AT THE DISCRETION OF THE PROXY HOLDER, ON ANY OTHER MATTERS THAT MAY PROPERLY COME BEFORE THE SPECIAL MEETING OR ANY POSTPONEMENT OR ADJOURNMENT THEREOF.

---

| | |
|:---|:---|
|  **Dated:** |  |
|  | **Signature of Stockholder** |
|  | **PLEASE PRINT NAME** |
|  | **Certificate Number(s)** |
|  | Total Number of Shares Owned |

---

Sign exactly as your name(s) appears on your stock certificate(s). A corporation is requested to sign its name by its President or other authorized officer, with the office held designated. Executors, administrators, trustees, etc., are requested to so indicate when signing. If a stock certificate is registered in two names or held as joint tenants or as community property, both interested persons should sign.

#### PLEASE NOTE :
STOCKHOLDER SHOULD SIGN THE PROXY PROMPTLY AND RETURN IT IN THE ENCLOSED ENVELOPE AS SOON AS POSSIBLE TO ENSURE THAT IT IS RECEIVED BEFORE THE SPECIAL MEETING. PLEASE INDICATE ANY ADDRESS OR TELEPHONE NUMBER CHANGES IN THE SPACE BELOW.

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