HYDROCARBON DYNAMICS LIMITED — Director's Dealing 2021

May 25, 2021

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26 May 2021

Director Retirement

Hydrocarbon Dynamics Limited (“HCD”) wishes to advise that at the conclusion of the Annual General Meeting Mr Allan Ritchie retired from the HCD board to concentrate on his role as CEO of Adavale Resources and on his efforts as an agent for HCD in China and the Middle East.

Commenting on the retirement HCD Chairman Mr Stephen Mitchell stated:

“On behalf of the board and shareholders I’d like to thank Allan for his important contribution to HCD over many years and to many areas of HCD’s business. Allan has been a champion of the technology and has been instrumental in securing quality distributors as well as successful trials in China and elsewhere. While Allan retires from the board, we look forward to working with him in advancing sales in the Middle East and China”.

For further information please contact:

Stephen Mitchell Chairman

Julie Edwards Company Secretary

Telephone: +61 3 9642 2899

Website: www.hcdinvestor.com ASX code: HCD

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

Appendix 3Z Final Director’s Interest Notice

Rule 3.19A.3

Appendix 3Z

Final Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public. Introduced 30/9/2001.

Name of entity Hydrocarbon Dynamics Limited ABN 75 117 387 354

We (the entity) give ASX the following information under listing rule 3.19A.3 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of director	Mr Andrew Seaton
Date of last notice	24/11/2020
Date that director ceased to be director	26/5/2021

Part 1 – Director’s relevant interests in securities of which the director is the registered holder

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Number & class of securities

Nil

• See chapter 19 for defined terms.

Appendix 3Z Page 1

11/3/2002

Appendix 3Z Final Director’s Interest Notice

Part 2 – Director’s relevant interests in securities of which the director is not the registered holder

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Name of holder & nature of interestNote: Provide details of the circumstances givingrise to the relevant interestRAAR Capital Group Pty LtdMr Ritchie is adirector of the companyRitchie Capital Pty Ltd<Allan Ritchie Superfund A/C>Mr Ritchie is adirector of the companyRAAR Capital Group Pty LtdMr Ritchie is adirector of the company	Number & class of securities- 4,069,377 fully paid ordinary shares- 339,115 Unlisted options exercisable @ $0.03expiring 31 October 2022- 131,532 fully paid ordinary shares- 11,336 Unlisted options exercisable @ $0.03expiring 31 October 2022- 1,500,000 - Incentive rights, expiring 1 Sept2021.

Part 3 – Director’s interests in contracts

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder(if issued securities)	N/A
No. and class of securities to whichinterest relates	N/A

• See chapter 19 for defined terms.

Appendix 3Z Page 2

11/3/2002