ARDEA RESOURCES LIMITED — Capital/Financing Update 2026

Mar 9, 2026

ABN: 30 614 289 342

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Registered and Business Office Suite 2, 45 Ord Street West Perth WA 6005 Australia Tel: +61 8 6244 5136 Email: ardea@ardearesources.com.au

10 March 2026

ASX Market Announcements Office Australian Securities Exchange Level 40, Central Park 152 - 158 St Georges Terrace Perth WA 6000

Dear Sir/Madam

Ardea Resources Ltd (ASX: ARL) – Notification under section 708A(5)(e) of the Corporations Act 2001 (Cth)

Ardea Resources Ltd ACN 614 289 342 ( Company ) gives this notice under section 708A(5)(e) of the Corporations Act 2001 (Cth) ( Corporations Act ) ( Cleansing Notice ).

This Cleansing Notice relates to the issue of 8,333,334 fully paid ordinary shares in the capital of the Company at an issue price of $0.60 per share to professional and sophisticated investors under a placement announced on 3 March 2026 ( Placement Shares ). The Placement Shares were issued today without disclosure to investors under section 708A(5) of the Corporations Act.

The Corporations Act restricts the on-sale of securities issued without disclosure unless the sale is exempt under section 708 or section 708A of the Corporations Act. Through the release of this Cleansing Notice, a sale of the Placement Shares noted above will fall within the exemption in section 708A(5) of the Corporations Act and they will be able to be traded immediately.

For the purposes of section 708A(6) of the Corporations Act, the Company gives notice that:

• a) the Placement Shares were issued without disclosure to Investors under Part 6D.2 of the Corporations Act;

• b) as at the date of this Cleansing Notice, the Company has complied with:

• (i) the provisions of Chapter 2M of the Corporations Act as they apply to the Company; (ii) section 674 and 674A of the Corporations Act; and

• c) as at the date of this Cleansing Notice, there is no information that is ‘excluded information’ within the meaning of sections 708A(7) and 708A(8) of the Corporations Act that is required to be set out in this Cleansing Notice.

For and on behalf of the Board By order of the Board

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Robert (Sam) Middlemas Company Secretary