CASTILE RESOURCES LTD — AGM Information 2025

13 October 2025

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Annual General Meeting of Shareholders

Castile Resources Limited (ASX: CST) ( CST or the Company ) provides the following documents regarding the Annual General Meeting of Shareholders:

• Letter to shareholders

• Notice of Annual General Meeting

• Sample proxy form

This announcement has been authorised by the Board of Castile Resources Limited.

For further information please contact:

Sebastian Andre Company Secretary [email protected]

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13 October 2025

Dear Shareholder

GENERAL MEETING AND ELECTRONIC COMMUNICATIONS

Castile Resources Limited (the Company ) ( ASX:CST ) is convening the Annual General Meeting of shareholders ( Meeting ) on Thursday, 13 November 2025, at 11:00 am (WST). If you would like to attend, it will be held at 45 Ventnor Avenue, West Perth WA. If the above arrangements with respect to the Meeting change, shareholders will be updated via ASX Market Announcements Platform as well as the Company’s website at https://www.castile.com.au/.

To assist the Company in ensuring that the Meeting is held in compliance with any safety requirements at the time of the Meeting, shareholders who wish to attend the Meeting in person should register their intention to attend with the Company at [email protected] by no later than 4:00 pm (WST) on 11 November 2025.

Notice of Meeting

In accordance with section 110D(1) of the Corporations Act 2001 (Cth) (Corporations Act), the Company will not be sending hard copies of the notice of meeting or annual report to shareholders unless a shareholder has requested a hard copies of these or made an election for the purposes of section 110E of the Corporations Act to receive documents from the Company in physical form. The notice of meeting can be viewed and downloaded from the Company’s website at https://www.castile.com.au/investors/asx-announcements/ or ASX at www2.asx.com.au.

Voting

The Company strongly encourages all shareholders to vote their proxies electronically. To do so, please go to the Company Registry’s website www.investorvote.com.au website. Please also have your HIN or SRN number (found on your Proxy, Holding Statement or other broker documentation) and postcode ready. Alternatively, please complete, sign and return your personalised proxy form in accordance with the instructions set out in the proxy form. Proxy form instructions (by proxy form or online voting) must be received by the Company’s share registry by no later than 11:00 am (WST) on 11 November 2025. Instructions received after that time will not be valid for the Meeting.

The Company encourages all shareholders to vote prior to the Meeting by returning their proxy voting instructions before the deadline and advises that all voting in respect of resolutions considered at the Meeting will be conducted on a poll.

Electronic communications

The Company encourages all shareholders to communicate with the Company by email at [email protected]. Castile Resources Limited is committed to promoting positive environmental outcomes. To that end, we are asking all our shareholders to provide an email address to receive their communications online. This ensures we are providing you with the information you need in the fastest, most cost-effective manner possible, while also significantly reducing our environmental impact. Please register to receive electronic communications and update your shareholder details online at www.investorcentre.com/au. Please follow the prompts to update your information, add your e-mail address and update your ‘Communications’ preferences.

Sebastian Andre

Company Secretary

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CASTILE RESOURCES LIMITED ACN 124 314 085 NOTICE OF ANNUAL GENERAL MEETING

Notice is given that the Meeting will be held at:

TIME : 11:00 am (WST) DATE : Thursday, 13 November 2025 PLACE : 45 Ventnor Avenue WEST PERTH WA 6005

The business of the Meeting affects your shareholding and your vote is important.

This Notice should be read in its entirety. If Shareholders are in doubt as to how they should vote, they should seek advice from their professional advisers prior to voting.

The Directors have determined pursuant to Regulation 7.11.37 of the Corporations Regulations 2001 (Cth) that the persons eligible to vote at the Meeting are those who are registered Shareholders at 4:00pm (WST) on Tuesday, 11 November 2025.

B U S I N E S S O F T H E M E E T I N G

AGENDA

1. FINANCIAL STATEMENTS AND REPORTS

To receive and consider the annual financial report of the Company for the financial year ended 30 June 2025 together with the declaration of the Directors, the Director’s report, the Remuneration Report and the auditor’s report.

2. RESOLUTION 1 – ADOPTION OF REMUNERATION REPORT

To consider and, if thought fit, to pass, with or without amendment, the following resolution as a non-binding resolution :

“That, for the purposes of section 250R(2) of the Corporations Act and for all other purposes, approval is given for the adoption of the Remuneration Report as contained in the Company’s annual financial report for the financial year ended 30 June 2025.”

Note: the vote on this Resolution is advisory only and does not bind the Directors or the Company.

3. RESOLUTION 2 – RE-ELECTION OF JAKE RUSSELL To consider and, if thought fit, to pass, with or without amendment, the following resolution as an ordinary resolution :

“That, for the purpose of clause 15.2 of the Constitution, Listing Rule 14.5 and for all other purposes, Jake Russell, a Director, retires by rotation, and being eligible, is reelected as a Director.”

4. RESOLUTION 3 – APPROVAL OF 7.1A MANDATE

To consider and, if thought fit, to pass the following resolution as a special resolution :

“That, for the purposes of Listing Rule 7.1A and for all other purposes, approval is given for the Company to issue up to that number of Equity Securities equal to 10% of the issued capital of the Company at the time of issue, calculated in accordance with the formula prescribed in Listing Rule 7.1A.2 and otherwise on the terms and conditions set out in the Explanatory Statement.”

Dated: 13 October 2025

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5830-01/3791405_2

Voting Prohibition Statement

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Voting by proxy

To vote by proxy, please complete and sign the enclosed Proxy Form and return by the time and in accordance with the instructions set out on the Proxy Form.

In accordance with section 249L of the Corporations Act, Shareholders are advised that:

• each Shareholder has a right to appoint a proxy;

• the proxy need not be a Shareholder of the Company; and

• a Shareholder who is entitled to cast two or more votes may appoint two proxies and may specify the proportion or number of votes each proxy is appointed to exercise. If the Shareholder appoints two proxies and the appointment does not specify the proportion or number of the member’s votes, then in accordance with section 249X(3) of the Corporations Act, each proxy may exercise one-half of the votes.

Shareholders and their proxies should be aware that:

• if proxy holders vote, they must cast all directed proxies as directed; and

• any directed proxies which are not voted will automatically default to the Chair, who must vote the proxies as directed.

Voting in person

To vote in person, attend the Meeting at the time, date and place set out above.

Should you wish to discuss the matters in this Notice please do not hesitate to contact the Company Secretary on +61 8 6555 2950.

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E X P L A N A T O R Y S T A T E M E N T

This Explanatory Statement has been prepared to provide information which the Directors believe to be material to Shareholders in deciding whether or not to pass the Resolutions.

1. FINANCIAL STATEMENTS AND REPORTS

In accordance with the Corporations Act, the business of the Meeting will include receipt and consideration of the annual financial report of the Company for the financial year ended 30 June 2025 together with the declaration of the Directors, the Directors’ report, the Remuneration Report and the auditor’s report.

The Company will not provide a hard copy of the Company’s annual financial report to Shareholders unless specifically requested to do so. The Company’s annual financial report is available on its website at www.castile.com.au.

2. RESOLUTION 1– ADOPTION OF REMUNERATION REPORT

2.1 General

The Corporations Act requires that at a listed company’s annual general meeting, a resolution that the remuneration report to be adopted must be put to the shareholders. However, such a resolution is advisory only and does not bind the company or the directors of the company.

The remuneration report sets out the company’s remuneration arrangements for the directors and senior management of the company. The remuneration report is part of the directors’ report contained in the annual financial report of the company for a financial year.

The chair of the meeting must allow a reasonable opportunity for its shareholders to ask questions about or make comments on the remuneration report at the annual general meeting.

2.2 Voting consequences

A company is required to put to its shareholders a resolution proposing the calling of another meeting of shareholders to consider the appointment of directors of the company ( Spill Resolution ) if, at consecutive annual general meetings, at least 25% of the votes cast on a remuneration report resolution are voted against adoption of the remuneration report and at the first of those annual general meetings a Spill Resolution was not put to vote. If required, the Spill Resolution must be put to vote at the second of those annual general meetings.

If more than 50% of votes cast are in favour of the Spill Resolution, the company must convene a shareholder meeting ( Spill Meeting ) within 90 days of the second annual general meeting.

All of the directors of the company who were in office when the directors' report (as included in the company’s annual financial report for the most recent financial year) was approved, other than the managing director of the company, will cease to hold office immediately before the end of the Spill Meeting but may stand for re-election at the Spill Meeting.

Following the Spill Meeting those persons whose election or re-election as directors of the company is approved will be the directors of the company.

2.3 Previous voting results

At the Company’s previous annual general meeting the votes cast against the remuneration report considered at that annual general meeting were less than 25%. Accordingly, the Spill Resolution is not relevant for this Meeting.

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3. RESOLUTION 2 – RE-ELECTION OF JAKE RUSSELL

3.1 General

Listing Rule 14.5 provides that an entity which has directors must hold an election of directors at each annual general meeting.

The Constitution sets out the requirements for determining which Directors are to retire by rotation at an annual general meeting.

Jake Russell, who has held office without re-election since 21 November 2023 and being eligible retires by rotation and seeks re-election.

Further information in relation to Jake Russell is set out below.

3.2 Technical information required by Listing Rule 14.1A

If this Resolution is passed, Jake Russell will be re-elected to the Board as an independent non-executive Director.

If this Resolution is not passed, Jake Russell will not continue in their role as an independent non-executive Director. The Company may seek nominations or otherwise identify suitably qualified candidates to join the Company. As an additional consequence, this may detract from the Board and Company’s ability to execute on its strategic vision.

4. RESOLUTION 3 – APPROVAL OF 7.1A MANDATE

4.1 General

This Resolution seeks Shareholder approval by way of special resolution for the Company to have the additional 10% placement capacity provided for in Listing Rule 7.1A to issue Equity Securities without Shareholder approval.

Broadly speaking, and subject to a number of exceptions, Listing Rule 7.1 limits the amount of equity securities that a listed company can issue without the approval of its shareholders over any 12 month period to 15% of the fully paid ordinary shares it had on issue at the start of that period.

Under Listing Rule 7.1A, an Eligible Entity may seek shareholder approval by way of a special resolution passed at its annual general meeting to increase this 15% limit by an extra 10% to 25% ( 7.1A Mandate ). An Eligible Entity means an entity which is not included in the S&P/ASX 300 Index and has a market capitalisation of $300,000,000 or less. As of the date of this Notice, the Company’s market capitalisation is $20,179,406. The Company is therefore an Eligible Entity.

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4.2 Technical information required by Listing Rule 14.1A

For this Resolution to be passed, at least 75% of votes cast by Shareholders present and eligible to vote at the Meeting must be cast in favour of the Resolution.

If this Resolution is passed, the Company will be able to issue Equity Securities up to the combined 25% limit in Listing Rules 7.1 and 7.1A without any further Shareholder approval.

If this Resolution is not passed, the Company will not be able to access the additional 10% capacity to issue Equity Securities without Shareholder approval under Listing Rule 7.1A and will remain subject to the 15% limit on issuing Equity Securities without Shareholder approval set out in Listing Rule 7.1.

4.3 Technical information required by Listing Rule 7.3A

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REQUIRED DETAILS INFORMATION

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the 7.1A Mandate, the economic and voting dilution of existing Shares would be as shown in the table below.

The table below shows the dilution of existing Shareholders calculated in accordance with the formula outlined in Listing Rule 7.1A.2, on the basis of the closing market price of Shares and the number of Equity Securities on issue or proposed to be issued as at 3 October 2025.

The table also shows the voting dilution impact where the number of Shares on issue (Variable A in the formula) changes and the economic dilution where there are changes in the issue price of Shares issued under the 7.1A Mandate.

*The number of Shares on issue (Variable A in the formula) could increase as a result of the issue of Shares that do not require Shareholder approval (such as under a pro-rata rights issue or scrip issued under a takeover offer) or that are issued with Shareholder approval under Listing Rule 7.1.

The table above uses the following assumptions:

1. There are currently 305,748,580 Shares on issue.

2. The issue price set out above is the closing market price of the Shares on the ASX on 3 October 2025 (being $0.10) ( Issue Price ). The Issue Price at a 50% increase and 50% decrease are each rounded to three decimal places prior to the calculation of the funds raised.

3. The Company issues the maximum possible number of Equity Securities under the 7.1A Mandate.

4. The Company has not issued any Equity Securities in the 12 months prior to the Meeting that were not issued under an exception in Listing Rule 7.2 or with approval under Listing Rule 7.1.

5. The issue of Equity Securities under the 7.1A Mandate consists only of Shares. It is assumed that no Options are exercised into Shares before the date of issue of the Equity Securities. If the issue of Equity Securities includes quoted Options, it is assumed that those quoted Options are exercised into Shares for the purpose of calculating the voting dilution effect on existing Shareholders.

6. The calculations above do not show the dilution that any one particular Shareholder will be subject to. All Shareholders should consider the dilution caused to their own shareholding depending on their specific circumstances.

7. This table does not set out any dilution pursuant to approvals under Listing Rule 7.1 unless otherwise disclosed.

8. The 10% voting dilution reflects the aggregate percentage dilution against the issued share capital at the time of issue. This is why the voting dilution is shown in each example as 10%.

9. The table does not show an example of dilution that may be caused to a particular Shareholder by reason of placements under the 7.1A Mandate, based on that Shareholder’s holding at the date of the Meeting.

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G L O S S A R Y

• $ means Australian dollars.

• 7.1A Mandate has the meaning given in Section 4.1.

ASIC means the Australian Securities & Investments Commission.

ASX means ASX Limited (ACN 008 624 691) or the financial market operated by ASX Limited, as the context requires.

Board means the current board of directors of the Company.

Business Day means Monday to Friday inclusive, except New Year’s Day, Good Friday, Easter Monday, Christmas Day, Boxing Day, and any other day that ASX declares is not a business day.

Chair means the chair of the Meeting.

Closely Related Party of a member of the Key Management Personnel means:

• (a) a spouse or child of the member;

• (b) a child of the member’s spouse;

• (c) a dependent of the member or the member’s spouse;

• (d) anyone else who is one of the member’s family and may be expected to influence the member, or be influenced by the member, in the member’s dealing with the entity;

• (e) a company the member controls; or

• (f) a person prescribed by the Corporations Regulations 2001 (Cth) for the purposes of the definition of ‘closely related party’ in the Corporations Act.

Company means Castile Resources Limited (ACN 124 314 085).

Constitution means the Company’s constitution.

Corporations Act means the Corporations Act 2001 (Cth).

Directors means the current directors of the Company.

Eligible Entity means an entity which is not included in the S&P/ASX 300 Index and has a market capitalisation of $300,000,000 or less.

Equity Securities includes a Share, a right to a Share or Option, an Option, a convertible security and any security that ASX decides to classify as an Equity Security.

Explanatory Statement means the explanatory statement accompanying the Notice.

Key Management Personnel has the same meaning as in the accounting standards issued by the Australian Accounting Standards Board and means those persons having authority and responsibility for planning, directing and controlling the activities of the Company, or if the Company is part of a consolidated entity, of the consolidated entity, directly or indirectly, including any director (whether executive or otherwise) of the Company, or if the Company is part of a consolidated entity, of an entity within the consolidated group.

Listing Rules means the Listing Rules of ASX.

Material Person means a related party of the Company, member of the Key Management Personnel, substantial holder of the Company, adviser of the Company or associate of any of these parties.

Meeting means the meeting convened by the Notice.

Notice means this notice of meeting including the Explanatory Statement and the Proxy Form.

Option means an option to acquire a Share.

Proxy Form means the proxy form accompanying the Notice.

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Remuneration Report means the remuneration report set out in the Director’s report section of the Company’s annual financial report for the year ended 30 June 2025.

Resolutions means the resolutions set out in the Notice, or any one of them, as the context requires.

Section means a section of the Explanatory Statement.

Security means a Share, or Option(as applicable).

Share means a fully paid ordinary share in the capital of the Company.

Shareholder means a registered holder of a Share.

Variable A means “A” as set out in the formula in Listing Rule 7.1A.2.

WST means Western Standard Time as observed in Perth, Western Australia.

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Need assistance?

Phone:

1300 850 505 (within Australia) +61 3 9415 4000 (outside Australia)

Online:

www.investorcentre.com/contact

YOUR VOTE IS IMPORTANT

For your proxy appointment to be effective it must be received by 11:00am (WST) on Tuesday, 11 November 2025.

Proxy Form

How to Vote on Items of Business

Lodge your Proxy Form:

All your securities will be voted in accordance with your directions.

Online:

APPOINTMENT OF PROXY

Voting 100% of your holding: Direct your proxy how to vote by marking one of the boxes opposite each item of business. If you do not mark a box your proxy may vote or abstain as they choose (to the extent permitted by law). If you mark more than one box on an item your vote will be invalid on that item.

Voting a portion of your holding: Indicate a portion of your voting rights by inserting the percentage or number of securities you wish to vote in the For, Against or Abstain box or boxes. The sum of the votes cast must not exceed your voting entitlement or 100%.

Appointing a second proxy: You are entitled to appoint up to two proxies to attend the meeting and vote on a poll. If you appoint two proxies you must specify the percentage of votes or number of securities for each proxy, otherwise each proxy may exercise half of the votes. When appointing a second proxy write both names and the percentage of votes or number of securities for each in Step 1 overleaf.

Lodge your vote online at

www.investorvote.com.au using your secure access information or use your mobile device to scan the personalised QR code.

Your secure access information is

Control Number: 188182

SRN/HIN:

For Intermediary Online subscribers (custodians) go to www.intermediaryonline.com

A proxy need not be a securityholder of the Company.

SIGNING INSTRUCTIONS FOR POSTAL FORMS

Individual: Where the holding is in one name, the securityholder must sign.

Joint Holding: Where the holding is in more than one name, all of the securityholders should sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the registry, please attach a certified photocopy of the Power of Attorney to this form when you return it.

Companies: Where the company has a Sole Director who is also the Sole Company Secretary, this form must be signed by that person. If the company (pursuant to section 204A of the Corporations Act 2001) does not have a Company Secretary, a Sole Director can also sign alone. Otherwise this form must be signed by a Director jointly with either another Director or a Company Secretary. Please sign in the appropriate place to indicate the office held. Delete titles as applicable.

By Mail:

Computershare Investor Services Pty Limited GPO Box 242 Melbourne VIC 3001 Australia

By Fax:

1800 783 447 within Australia or +61 3 9473 2555 outside Australia

PARTICIPATING IN THE MEETING

Corporate Representative

If a representative of a corporate securityholder or proxy is to participate in the meeting you will need to provide the appropriate “Appointment of Corporate Representative”. A form may be obtained from Computershare or online at www.investorcentre.com/au and select "Printable Forms".

PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confidential.

You may elect to receive meeting-related documents, or request a particular one, in electronic or physical form and may elect not to receive annual reports. To do so, contact Computershare.

320858_0_COSMOS_Sample_Proxy/000001/000001/i

Change of address. If incorrect, mark this box and make the correction in the space to the left. Securityholders sponsored by a broker (reference number commences with ‘ X ’) should advise your broker of any changes.

Proxy Form

Please mark to indicate your directions

Step 1 Appoint a Proxy to Vote on Your Behalf

I/We being a member/s of Castile Resources Limited hereby appoint

the Chair OR of the Meeting

PLEASE NOTE: Leave this box blank if you have selected the Chair of the Meeting. Do not insert your own name(s).

or failing the individual or body corporate named, or if no individual or body corporate is named, the Chair of the Meeting, as my/our proxy to act generally at the meeting on my/our behalf and to vote in accordance with the following directions (or if no directions have been given, and to the extent permitted by law, as the proxy sees fit) at the Annual General Meeting of Castile Resources Limited to be held at 45 Ventnor Avenue, West Perth, WA 6005 on Thursday, 13 November 2025 at 11:00am (WST) and at any adjournment or postponement of that meeting. Chair authorised to exercise undirected proxies on remuneration related resolutions: Where I/we have appointed the Chair of the Meeting as my/our proxy (or the Chair becomes my/our proxy by default), I/we expressly authorise the Chair to exercise my/our proxy on Resolution 1 (except where I/we have indicated a different voting intention in step 2) even though Resolution 1 is connected directly or indirectly with the remuneration of a member of key management personnel, which includes the Chair.

Important Note: If the Chair of the Meeting is (or becomes) your proxy you can direct the Chair to vote for or against or abstain from voting on Resolution 1 by marking the appropriate box in step 2.

Step 2 Items of Business

PLEASE NOTE: If you mark the Abstain box for an item, you are directing your proxy not to vote on your behalf on a show of hands or a poll and your votes will not be counted in computing the required majority.

For Against

Resolution 1 Adoption of Remuneration Report Resolution 2 Re-election of Jake Russell Resolution 3 Approval of 7.1A Mandate

The Chair of the Meeting intends to vote undirected proxies in favour of each item of business. In exceptional circumstances, the Chair of the Meeting may change his/her voting intention on any resolution, in which case an ASX announcement will be made.

Step 3 Signature of Securityholder(s)

This section must be completed.

Individual or Securityholder 1 Securityholder 2 Securityholder 3 / / Sole Director & Sole Company Secretary Director Director/Company Secretary Date Update your communication details (Optional) By providing your email address, you consent to receive future Notice Mobile Number Email Address of Meeting & Proxy communications electronically

CST