RIEDEL RESOURCES LIMITED — Capital/Financing Update 2025

Dec 3, 2025

COY

X 9999999920

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T 000040 RIE MR SAM SAMPLE 123 SAMPLE STREET SAMPLETOWN VIC 3000

4 December 2025

Dear Shareholder

Notice to Eligible Shareholders of Non-Renounceable Entitlement Offer

We write to you as the registered holder of fully paid ordinary shares ( Shares ) in the capital of Riedel Resources Limited (ASX: RIE) ( Company ) at today’s date.

On 25 November 2025, the Company announced that it is conducting a pro rata non-renounceable entitlement offer of new Shares to eligible shareholders at an issue price of $0.025 per Share ( New Share ), on the basis of 1 New Share for every 2 Shares held as at 5.00pm (AWST) on 1 December 2025 ( Record Date ) to raise up to approximately $1.78 million (before costs) ( Entitlement Offer ).

Proceeds from the Entitlement Offer will be applied principally towards exploration and development, corporate and working capital as well as the costs of the Entitlement Offer.

The Entitlement Offer is being made pursuant to section 708AA of the Corporations Act 2001 (Cth) (as modified by ASIC Corporations (Non-Traditional Rights Issues) Instrument 2016/84 and ASIC Corporations (Disregarding Technical Relief) Instrument 2016/73 ), which allows the Entitlement Offer to be made without a prospectus.

An information booklet in relation to the Entitlement Offer was lodged with the ASX and is expected to be despatched to Eligible Shareholders (as defined below) on 4 December 2025 ( Information Booklet ).

Capitalised terms used, but not defined in this letter have the meaning ascribed to them in the Information Booklet.

Details of the Entitlement Offer

Shareholders who are eligible to participate in the Entitlement Offer ( Eligible Shareholders ) are shareholders who:

• are registered as a holder of Shares in the Company as at 5.00pm (AWST) on the Record Date; and

• as at the Record Date, have a registered address on the Company’s share register that is in Australia and New Zealand or are a shareholder that the Company has otherwise determined as eligible to participate (subject to the requirements outlined in the Information Booklet); and

• are eligible under all applicable securities laws to receive an offer under the Entitlement Offer.

As an Eligible Shareholder , you will be able to subscribe for New Shares under the Entitlement Offer.

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The Entitlement Offer is non-renounceable, meaning that Eligible Shareholders will not be able to transfer their Entitlements pursuant to the Entitlement Offer and, if they do not take up their Entitlements pursuant to the Entitlement Offer, their holdings will be diluted.

How to access the Entitlement Offer and Information Booklet

1. ONLINE – The personalised Entitlement and Application Form can be accessed via the Computershare Investor portal at www.investorcentre.com/au by using the ‘Single holding’ login option, selecting ‘Documents’ and downloading the document titled ‘Entitlement Acceptances’.

The Information Booklet can also be accessed via the Company’s website: www.riedelresources.com.au

1. PAPER – Request a paper copy of the Information Booklet and your personalised Entitlement and Acceptance Form by contacting the Company on (03) 9614 0600 between 8.30am and 5.00pm (AEDT), Monday to Friday during the Entitlement Offer Period.

The Entitlement Offer closes at 5:00pm (AWST) on Monday, 15 December 2025.

Your personalised Entitlement and Acceptance Form sets out your Entitlements under the Entitlement Offer and instructions on how you may apply for New Shares. Fractional entitlements will be rounded up to the nearest whole number.

It is important that you read the Information Booklet carefully before deciding whether to participate in the Entitlement Offer and seek advice from your financial adviser if you have any queries.

Indicative Timetable

Event	Date
Announcement of Entitlement OfferInformation Booklet, Appendix 3B and Cleansing Noticelodged with ASX	Tuesday, 25 November 2025
"Ex" date	Friday, 28 November 2025
Record date for eligibility under the Entitlement Offer	Monday, 1 December 2025
Information Booklet and Entitlement and Acceptance Formdespatched to Eligible ShareholdersEntitlement Offer Opening Date	Thursday, 4 December 2025
Last day to extend the Entitlement Offer Closing Date	Wednesday, 10 December 2025
Entitlement Offer Closing Date	Monday, 15 December 2025
Unless otherwise determined by ASX, New Shares quoted on adeferred settlement basis from market open	Tuesday, 16 December 2025
Announcement of results of the Entitlement OfferIssue of New Shares under the Entitlement OfferLodgement of Appendix 2A with ASX	Monday, 22 December 2025
Quotation of New Shares	Tuesday, 23 December 2025

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Notes : The timetable above (and each reference to or to dates in this letter and the Information Booklet) is indicative only and may change. The Company reserves the right to amend any or all of these dates and times without notice, subject to the Corporations Act, the Listing Rules and other applicable laws. In particular, the Company reserves the right to extend the Closing Date and to accept late Applications (either generally or in particular cases). Any extension of the Closing Date will have a consequential effect on the allotment date of New Shares. The commencement of quotation of the New Shares is subject to confirmation from ASX.

The Company also reserves the right not to proceed with the Entitlement Offer in whole or in part at any time prior to allotment and issue of the New Shares. In that event, the relevant Application Monies (without interest) will be returned in full to Applicants. Cooling-off rights do not apply to an investment in New Shares. You cannot withdraw your Application. Eligible Shareholders wishing to participate in the Entitlement Offer are encouraged to submit their Entitlement and Acceptance Form as soon as possible after the Entitlement Offer opens.

Further details

Details of the Entitlement Offer are contained in the Information Booklet. The Information Booklet can be accessed from the ASX and Company websites, www.asx.com.au and www.riedelresources.com.au respectively.

For further information on the Entitlement Offer or if you have questions on how to complete the Entitlement and Acceptance Form, you may contact the Company on (03) 9614 0600 between 8.30am and 5.00pm (AEDT), Monday to Friday during the Entitlement Offer Period. If you have any further questions, you should contact your stockbroker, solicitor, accountant or other professional adviser.

Yours sincerely

Adrien Wing

Company Secretary Riedel Resources Limited

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