ASTRON LIMITED — Capital/Financing Update 2025

May 25, 2025

26 May 2025

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Cleansing Notice – Issue of CHESS Depositary Interests

Notice under section 708A(5)(e) of the Corporations Act 2001 (Cth)

Astron Corporation Limited (ASX:ATR) ( Astron or Company ) gives this cleansing notice ( Cleansing Notice ) under section 708A(5)(e) of the Corporations Act 2001 (Cth) ( Corporations Act ) in respect of the issue of 388,350 securities ( CDIs ) referred to in the Appendix 2A – Application for quotation of securities lodged today and Appendix 3B lodged 23 May 2025. The CDIs are issued as part consideration for the grant of an option regarding a land acquisition in relation to the Donald Rare Earths and Mineral Sands Project.

The Company states that:

• a) The CDIs were issued without disclosure to investors under Part 6D.2 of the Corporations Act;

• b) as a disclosing entity, the Company is subject to regular reporting and disclosure obligations;

• c) as at the date of this notice, the Company has complied with:

  • i. the provisions of Chapter 2M of the Corporations Act, as they apply to the Company; and

  • ii. section 674 and 674A of the Corporations Act; and

• d) as at the date of this notice, there is no information that is “excluded information” within the meanings of sections 708A(7) and 708A(8) of the Corporations Act that is required to be disclosed.

This cleansing notice has been authorised for lodgement to the ASX by the Managing Director of Astron.

For further information, please contact :

Joshua Theunissen, Australian Company Secretary +61 3 5385 7088 joshua.theunissen@astronlimited.com

About Astron

Astron Corporation Limited (ASX: ATR) is an ASX listed company, with over 35 years of experience in mineral sands processing and downstream product development, as well as the marketing and sales of zircon and titanium dioxide products. Astron’s primary focus, in association with joint venture partner, Energy Fuels Inc, is the development of its Donald Rare Earths and Mineral Sands Project in regional Victoria. The Donald Project has the potential to become a globally significant, long-life supplier of critical rare earth elements, including neodymium, praseodymium, dysprosium, terbium, as well as zircon and titanium minerals. The Company operates a mineral separation plant, as well as a zircon and titanium chemicals and metals research facility, in Yingkou, China.

Astron Corporation Limited ARBN 154 924 553 31/F., 148 Electric Road North Point, Hong Kong E investors@astronlimited.com W astronlimited.com.au