HYDROCARBON DYNAMICS LIMITED — Capital/Financing Update 2025

Jul 17, 2025

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18 July 2025

Market Announcements Office ASX Limited 20 Bridge Street Sydney NSW 2000

Dear Sir / Madam

Notice under section 708AA(2)(f) of the Corporations Act 2001 (Cth)

Hydrocarbon Dynamics Limited (ASX:HCD) (HCD or the Company) has announced 1 for 3 nonrenounceable Entitlement Offer at 0.2 cents per share to raise up to approximately $718,000 before costs if fully subscribed.

The Company advises that:

1. The shares to be issued pursuant to the Entitlement Offer will be offered for issue without disclosure to investors under Part 6D.2 of the Corporations Act;

2. this notice is being given in accordance with section 708AA(2)(f) of the Corporations Act;

3. As at the date of this notice:

4. (a) the Company has complied with the provisions of Chapter 2M of the Corporations Act;

5. (b) the Company has complied with Section 674 and 674A of the Corporations Act; and

6. (a) there is no information which is ‘excluded information’ of the type referred to in sections 708AA(8) and 708AA(9) of the Corporations Act that is required to be set out in this notice under section 708AA(7)(d) of the Corporations Act; and

7. The potential effect that the Entitlement Offer will have on the control of the Company and the consequences of that effect will depend on investor demand and existing holdings. At this time, the issue of Shares under the Entitlement Offer is not expected to have a material effect or consequence on the control of the Company. Given:

8. (a) the size and pricing of the Entitlement Offer; and

9. (b) the structure of the Entitlement Offer as a pro rata non-renounceable issue;

10. (c) the Entitlement Offer is not underwritten;

11. (d) the current level of holdings of substantial holders (based on substantial holding notices that have been given to HCD and lodged with ASX on or before the date of this notice).

Authorised for release by the board of directors.

For further information please contact:

Stephen Mitchell

Chairman Telephone: +61 3 9642 2899 Website: www.hydrocarbondynamics.com ASX code: HCD

Julie Edwards

Company Secretary

ABN: 75 117 387 354 Tel: +61 3 9642 2899 | Fax: +61 3 9642 5177 Level 6, 412 Collins Street, Melbourne VIC 3000 Australia