HYDROCARBON DYNAMICS LIMITED — Capital/Financing Update 2022

Feb 22, 2022

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ACN 117 387 354

Entitlement Offer Booklet

For a pro rata non-renounceable Entitlement Offer of:

1 New Share for every 3 Existing Shares held on the Record Date, for an issue price of 1.1 cent per New Share;

Together with a Shortfall Offer for Entitlements not subscribed for by Eligible Shareholders according to their respective Entitlements

The Entitlement Offer will be partially underwritten by Malangi Pty Ltd (a related entity of Mr Stephen Mitchell).

The Entitlement Offer closes at 5.00 pm (Melbourne time) on Monday, 14 March 2022

IMPORTANT NOTICE

THIS OFFER BOOKLET IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. YOU SHOULD READ THIS OFFER BOOKLET CAREFULLY AND, IN ITS ENTIRETY, WITH EMPHASIS ON THE RISK FACTORS DETAILED IN SECTION 3, HAVE REGARD TO YOUR OWN INVESTMENT PARAMETERS, AND IF REQUIRED, OBTAIN INDEPENDENT PROFESSIONAL INVESTMENT ADVICE, BEFORE DECIDING TO INVEST IN HCD. THE NEW SHARES OFFERED BY THIS BOOKLET SHOULD BE CONSIDERED AS SPECULATIVE.

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART or INTO THE UNITED STATES, OR TO US PERSONS.

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Important Information

About this document

This Offer Booklet contains information relating to a proposed entitlement offer to be undertaken by Hydrocarbon Dynamics Limited (ABN 75 117 387 354) (HCD or the Company).

This Offer Booklet is important and requires your immediate attention. You should read this Offer Booklet carefully and in its entirety, with emphasis on the risk factors detailed in Section 3, have regard to your own investment parameters, and if required, obtain independent professional investment advice, before deciding to invest in HCD.

The Entitlement Offer is being made in accordance with Section 708AA of the Corporations Act (as modified by ASIC Legislative Instrument 2016/84). Accordingly, this document is not a prospectus (and has not been, and will not be, lodged with ASIC) and does not contain all information which an investor may require to make an informed investment decision.

Forward-looking statements

This document contains forward looking statements with respect to the financial condition, results of operations, projects and business of HCD and certain plans and objectives of the management of HCD. Forward looking statements include those containing words such as: "anticipate", "believe", "expect", "estimate", "should", “will", "plan", "could", "may" "intends", "guidance", "project", "forecast", "target", "likely" and other similar expressions, and include, but are not limited to, statements regarding the outcome and effects of the Entitlement Offer, projections, guidance on future revenues, earnings, dividends and estimates. The forward looking statements contained in this document are not based solely on historical facts but are based on current expectations about future events and results. These forward looking statements are subject to inherent known and unknown risks and uncertainties and other factors which are beyond the control of HCD. This includes any statements about market and industry trends, which are based on interpretations of current market conditions. Such risks and uncertainties include factors and risks specific to the operations of HCD, as well as general economic conditions, prevailing interest rates, conditions in the financial markets, government policies and regulations and competitive pressures. As a consequence, forward looking statements are provided as a general guide only and actual events or results may differ materially from the expectations expressed or implied in such forward looking statements.

Forward-looking statements in this Offer Booklet speak only at the date of this Offer Booklet. Subject to any continuing obligations under applicable law or the ASX Listing Rules, HCD does not in providing this information undertake any obligation to publicly update or revise any of the forward-looking statements for any change in events, conditions or circumstances on which any such statement is based. Accordingly, you are cautioned not to place undue reliance on forward looking statements contained in this document.

Neither HCD, nor any other person, gives any representation, warranty, assurance or guarantee that the occurrence of the events expressed or implied in any forward looking statement will actually occur.

Information about HCD

HCD's releases periodic and continuous disclosure announcements, including HCD's annual report lodged with ASX on 31 March 2021 and HCD’s half year reports lodged on 8 September 2021, which are available on the ASX at www.asx.com.au and HCD’s website at www.hydrocarbondynamics.com.

Past performance

Investors should note that HCD’s past performance, including past share price performance, cannot be relied upon as an indicator of (and provides no guarantee or guidance as to) HCD’s future performance including HCD’s future financial position or share price performance.

Foreign jurisdictions

This Offer Booklet and any accompanying Entitlement and Acceptance Form may not be distributed or released in the United States and do not constitute an offer to sell, or the solicitation of an offer to buy, any securities in the United States or to any person acting to the account or benefit of a person in the United States, or in any jurisdiction in which, or to any person to whom, it would not be lawful to make such an offer. The distribution by you of this Offer Booklet (including an electronic copy) outside Australia and New Zealand may be restricted by law. You should observe such restrictions. Any non-compliance with these restrictions may contravene applicable securities law.

In particular, the New Shares have not been, and will not be, registered under the US Securities Act of 1933 (Securities Act) or the securities laws of any state or other jurisdiction of the United States and, accordingly, may not be offered or sold, directly or indirectly, to persons in the United States or to persons who are acting for, or for the account or benefit of, a person in the United States, except in transactions exempt from, or not subject to, the registration requirements of the Securities Act and any other applicable US state securities laws.

It is your responsibility to ensure that you comply with any laws of your jurisdiction which are applicable to you and which are relevant to your applying for New Shares under the Entitlement Offer. No action has been taken to register or qualify the Entitlement Offer or the New Shares, or otherwise permit the public offering of the New Shares, in any jurisdiction other than Australia and New Zealand. The distribution of this Offer Booklet (including an electronic copy) outside Australia and New Zealand may be restricted by law. You should observe such restrictions and should seek your own advice on such restrictions. Any non-compliance with these restrictions may contravene applicable securities law.

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Nominees

Nominees and custodians may not distribute this document, and may not permit any beneficial shareholder to participate in the Offer, in any country outside Australia and New Zealand except, with the consent of HCD, to beneficial shareholders resident in certain other countries where HCD may determine it is lawful and practical to make the Entitlement Offer.

Disclaimer of representations

No person is authorised to give any information, or to make any representation, in connection with the Entitlement Offer that is not contained in this Offer Booklet. Any information or representation that is not contained in this Offer Booklet may not be relied on as having been authorised by HCD in connection with the Entitlement Offer. Except as required by law, and only to the extent so required, none of HCD, or any other person, warrants or guarantees the future performance of HCD or any return on any investment made pursuant to the Entitlement Offer.

No financial product advice

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This Offer Booklet is not financial product advice, does not purport to contain all the information that you may require to make an
investment decision, and has been prepared without taking into account your personal investment objectives, financial situation or needs.
Before deciding whether to apply for New Shares under the Entitlement Offer, you should consider whether they are a suitable
investment for you in light of your own investment objectives and financial circumstances and having regard to the merits or risks
involved. If after reading this Offer Booklet, you have any questions about the Entitlement Offer, you should contact your financial or
other professional adviser.
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Definitions and references to time

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Capitalised words and expressions in this Offer Booklet have the meanings given in Section 10. A reference to time in this Offer Booklet is
to Melbourne time, unless otherwise stated.
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All financial amounts in this Offer Booklet are references to Australian currency, unless otherwise stated.

Date of this document

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This Offer Booklet is dated 11 February 2022.
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For any enquiries please call Automic as Share Registry on 1300 288 664 (within Australia) or +61 2 9698 5414 (within and outside Australia), or contact your stockbroker, accountant or other professional adviser.

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Key Dates

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|||
|---|---|
|Event|Date|
|Announcement of the Entitlement Offer|Friday, 11 February 2022|
|Shares traded on an “ex” entitlement basis|Monday, 21 February 2022|
|Record Date for eligibility to participate in the Entitlement Offer|Tuesday, 22 February 2022|
|Despatch of Entitlement Offer Booklet and Entitlement and Acceptance|
|Wednesday, 23 February 2022|
|Form to Eligible Shareholders|
|Entitlement Offer opens|Wednesday, 23 February 2022|
|Last date to extend the offer closing date|Wednesday, 9 March 2022|
|Entitlement Offer closes|Monday, 14 March 2022|
|Securities quoted on a deferred settlement basis|Tuesday, 15 March 2022|
|Shortfall (if any) announced to ASX|Thursday, 17 March 2022|
|Settlement of New Shares under the Entitlement Offer|Friday, 18 March 2022|
|Issue of New Shares under Entitlement Offer|Friday, 18 March 2022|
|Despatch of Holding Statements|Monday, 21 March 2022|
|New Shares commence trading on a normal settlement basis|Monday, 21 March 2022|

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Dates and times in this Offer Booklet are indicative only and subject to change. Any material changes will be notified to ASX. All dates and times are references to Melbourne time.

HCD, reserves the right to amend any or all of these dates and times, subject to the Corporations Act, the ASX Listing Rules and other applicable laws and regulations. In particular, HCD reserves the right to extend the Closing Date and/or accept late Applications under the Entitlement Offer without prior notice. Any extension of the Closing Date may have a consequential impact on the date that New Shares are issued and commence trading on the ASX. Applicants are encouraged to submit their personalised Entitlement and Acceptance Forms as soon as possible after the Entitlement Offer opens.

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1. Overview of the Entitlement Offer

1.1 Summary

The Entitlement Offer is a pro rata non renounceable rights offer to Eligible Shareholders of up to approximately 146.8 million New Shares at 1.1 cent per New Share ( Issue Price ) to raise up to approximately $1.6 million before costs and expenses if fully subscribed. The Entitlement Offer is partially underwritten by a related party of a Director of HCD.

Eligible Shareholders are entitled to subscribe for 1 New Share for every 3 Shares held by them at 7.00 pm (Melbourne time) on the Record Date.

The Entitlement Offer is non-renounceable, which means that to the extent that any entitlement under the Entitlement Offer is not taken up by any Eligible Shareholder prior to the Closing Date, the entitlement will lapse.

No brokerage fees are payable by Eligible Shareholders who exercise their entitlement.

The choices available to Eligible Shareholders in respect of the Entitlement Offer are described in Section 2.

The Entitlement Offer is currently scheduled to close at 5.00 pm (Melbourne time) on 14 March 2022.

1.2 Eligible Shareholders

Unless the Company otherwise determines, the Entitlement Offer is being made to those Shareholders ( Eligible Shareholders ) who:

• (a) are registered as a holder of HCD’s Shares as at the Record Date;

• (b) have a registered address in Australia or New Zealand or is a shareholder that HCD otherwise determines is eligible to participate;

• (c) are not in the United States and are not acting for the account or benefit of any person in the United States; and

• (d) are eligible under all applicable securities laws to receive an offer under the Entitlement Offer without a prospectus or other disclosure document or any lodgement, filing, registration or qualification.

HCD is of the view that it is unreasonable to make an offer under the Entitlement Offer to shareholders outside of Australia and New Zealand having regard to:

• (a) the number of Shareholders outside of those jurisdictions as a proportion of total Shareholders in HCD;

• (b) the number and value of the New Shares that would have been offered to those Shareholders outside of those jurisdictions; and

• (c) the cost of complying with the legal requirements and requirements of regulatory authorities in the overseas jurisdictions.

HCD is not required to make offers under the Entitlement Offer to Shareholders outside of Australia and New Zealand (although HCD may, at its absolute discretion, make offers under the Entitlement Offer to investors in certain other jurisdictions to whom it is lawful to make such an offer, subject to the provisions of Section 4.4).

1.3 What is the entitlement of an Eligible Shareholder?

The number of New Shares to which you are entitled under the Entitlement Offer is shown in the personalised Entitlement and Acceptance Form which accompanies this Offer Booklet. In calculating each Eligible Shareholder’s entitlement, fractional entitlements to New Shares have been rounded up to the nearest whole number of New Shares. Eligible Shareholders can subscribe for all, or part, of their pro rata entitlement under

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the Entitlement Offer. Detailed instructions on how to accept all, or part of, your pro rata entitlement are set out in Section 2.

Please note that if you choose not to take up your pro rata entitlement, your percentage shareholding in HCD will be diluted to the extent that the Entitlement Offer is taken up by other persons.

1.4 Top-Up Facility

Eligible Shareholders may, in addition to taking up their entitlements in full, apply for additional New Shares ( Additional Shares ) in excess of their entitlement ( Top-Up Facility ). Additional Shares will only be available where there is a shortfall between applications received from Eligible Shareholders and the number of New Shares proposed to be issued under the Entitlement Offer ( Shortfall ). Additional Shares will be issued at the Issue Price.

HCD proposes to adopt the below allocation policy for allocating Shortfall.

(a) If there is a Shortfall, each Eligible Shareholder who has applied for Additional Shares through the Top-Up Facility will be entitled to be allocated their pro-rata share of the Shortfall having regard to their holdings at the Record Date (if an Eligible Shareholder has made an application for Additional Shares for an amount less than the amount of Additional Shares that the Eligible Shareholder would otherwise be allocated under this process, the Eligible Shareholder will be allocated the amount applied for).

(b) The allocation process described above will be repeated in relation to any remaining Shortfall and any subsequent Shortfall, until either all New Shares proposed to be issued have been allocated or all Shortfall applications have been satisfied in full.

(c) Directors of HCD will not be eligible to participate in the Top-Up Facility or apply for Additional Shares.

(d) If, following the above allocation, there remains a Shortfall, the underwriter will receive their allocation and it will then be at the discretion of the Directors of HCD to place any further shortfall with sophisticated or professional investors.

(e) The Directors reserve the right to place any Additional Shares within 3 months after the close of the Entitlement Offer. The Directors are not obliged to place any such Additional Shares and will only do so in their discretion.

For avoidance of doubt, the Corporations Act 20% relevant interest level applies to limit the acquisition of Additional Shares through the Top-Up Facility.

Accordingly, Eligible Shareholders who apply for Additional Shares may be allocated a lesser number of Additional Shares than applied for in which case excess Application Money will be refunded without interest. If you wish to subscribe for Additional Shares in addition to your Entitlement then you should nominate the maximum number of Additional Shares you wish to subscribe for on the Entitlement and Acceptance Form and make corresponding payment for your full Entitlement plus the Additional Shares.

1.5 Underwriting

The rights issue will be partially underwritten by Mr Mitchell through his related party, Malangi Pty Ltd (Underwriter).

The Underwriter’s partial underwriting is up to the amount of $266,645 committed to taking up any shortfall of acceptances from other shareholders after the allocation of the Top-Up Facility.

No underwriting fees will be applicable.

The obligation of the Underwriter to underwrite the Entitlement Offer is subject to certain conditions and events of termination pursuant to the Underwriting Agreement. The Underwriter may terminate its obligations under the Underwriting agreement if:

(a) Contravention of constitution or Act: a contravention by a relevant company of any provision of its

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constitution, the Corporations Act, the ASX Listing Rules or any other applicable legislation or any policy or requirement of ASIC or ASX;

• (b) Adverse change: an event occurs which gives rise to a material adverse effect or any adverse change or any development including a prospective adverse change after the date of the Underwriting Agreement in the assets, liabilities, financial position, trading results, profits, forecasts, losses, prospects, business or operations of any relevant company including, without limitation, if any forecast in the Offer booklet becomes incapable of being met or in the Underwriter's reasonable opinion, unlikely to be met in the projected time;

• (c) Significant change: a "new circumstance" as referred to in section 719(1) of the Corporations Act arises that is materially adverse from the point of view of an investor;

• (d) Official Quotation qualified: the official quotation is qualified or conditional other than as set out in the definition of "Official Quotation" in the Underwriting Agreement;

• (e) Change in Act or policy: there is introduced, or there is a public announcement of a proposal to introduce, into the Parliament of Australia or any of its States or Territories any Act or prospective Act or budget or the Reserve Bank of Australia or any Commonwealth or State authority adopts or announces a proposal to adopt any new, or any major change in, existing, monetary, taxation, exchange or fiscal policy;

• (f) Suspension of debt payments: the Company suspends payment of its debts generally;

• (g) Event of Insolvency: an event of insolvency occurs in respect of a relevant company;

• (h) Judgment against a relevant company: a judgment in an amount exceeding $25,000 is obtained against a relevant company and is not set aside or satisfied within 7 days;

• (i) Litigation: litigation, arbitration, administrative or industrial proceedings are after the date of the Underwriting Agreement commenced or threatened against any relevant company, other than any claims foreshadowed in the Offer Document;

• (j) Board and senior management composition: there is a change in the composition of the board of HCD or a change in the senior management of the Company before completion of the Entitlement Offer without the prior written consent of the Underwriter;

• (k) Change in shareholdings: there is a material change in the major or controlling shareholdings of a relevant company or a takeover offer or scheme of arrangement pursuant to Chapter 5 or 6 of the Corporations Act is publicly announced in relation to a relevant company;

• (l) Timetable: there is a delay in any specified date in the timetable which is greater than 7 Business Days;

• (m) Force Majeure: a force majeure affecting the Company's business or any obligation under the Underwriting Agreement lasting in excess of 7 days occurs;

• (n) Certain resolutions passed: a relevant company passes or takes any steps to pass a resolution under section 254N, section 257A or section 260B of the Corporations Act or a resolution to amend its constitution without the prior written consent of the Underwriter;

• (o) Capital Structure: any relevant company alters its capital structure in any manner not contemplated by the Offer Booklet;

• (p) Market Conditions: a suspension or material limitation in trading generally on ASX occurs or any material adverse change or disruption occurs in the existing financial markets, political or economic

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conditions of Australia, Japan, the United Kingdom, the United States of America or other international financial markets.

1.6 No trading of entitlements

Entitlements under the Entitlement Offer are non-renounceable and will not be tradeable on the ASX or otherwise transferable. Shareholders who do not take up their entitlement in full will not receive any value in respect of that part of the entitlement that they do not take up.

1.7 Issue of New Shares

HCD currently expects that New Shares will be issued on 18 March 2022. The issue of New Shares will only be made after permission for their quotation on ASX has been obtained. The fact that New Shares have been admitted to quotation on ASX is not to be taken in any way as an indication of the merits of HCD or the New Shares.

1.8 Ranking of New Shares

When issued, the New Shares will be fully paid and will rank equally with existing Shares.

1.9 Withdrawal of the Entitlement Offer

HCD reserves the right to withdraw all or part of the Entitlement Offer, and this Offer Booklet, at any time, subject to applicable laws. In that case, HCD will refund Application Monies in relation to New Shares not already issued in accordance with the Corporations Act and without payment of interest.

To the fullest extent permitted by law, you agree that any Application Monies paid by you to HCD will not entitle you to receive any interest and that any interest earned in respect of Application Monies will belong to HCD.

1.10 Speculative nature of Entitlement Offer and projects and relevant risk factors

In deciding whether to take up some or all of your entitlements under the Entitlement Offer, you should:

(a) have regard to the risks discussed in Section 3 of this Offer Booklet and

(b) read this Offer Booklet carefully and in its entirety and have regard to your own investment parameters, and if required, obtain independent professional investment advice, before deciding to invest in HCD.

1.11 Purpose and use of funds

HCD plans to use the funds raised from the Rights Issue to allow the Company to continue its sales and marketing efforts for its key product, HCD Multi-Flow and to support its upstream activities as well as general working capital purposes.

1.12 Financial Impact

The proceeds from the Equity Raising, before allowing for costs and expenses, will amount up to approximately $1.6 million if fully subscribed.

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1.13 Effect on Capital Structure

The principal effect of the Equity Raising on HCD's issued share capital will be to increase the total number of issued Shares. The following table sets out the number of issued Shares on the Announcement Date and, subject to the rounding of fractional entitlements under the Entitlement Offer, the total number of issued Shares at the completion of the Entitlement Offer if fully subscribed:

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|||
|---|---|
|Shares|Number|
|Shares on issue at the Announcement Date|440,290,106|
|Shares offered under the Entitlement Offer|146,763,369|
|Maximum Shares on issue on completion of the Entitlement Offer|587,053,475|

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• The number of New Shares to be issued under the Entitlement Offer is subject to the rounding of fractional entitlements to New Shares.

HCD has 46,269,645 options on issue expiring 31 October 2022 with an exercise price of 3 cents.

1.14 Effect of the Entitlement Offer on the Control of HCD

The potential effect the Entitlement Offer will have on the control of HCD is as follows:

• (a) if all Eligible Shareholders take up their entitlements under the Entitlement Offer, then the Entitlement Offer will have no effect on the control of HCD;

• (b) if some Eligible Shareholders do not take up all of their entitlements under the Entitlement Offer, then the interests of those Eligible Shareholders will be diluted;

• (c) the proportional interests of shareholders who are not Eligible Shareholders will be diluted because such shareholders are not entitled to participate in the Entitlement Offer,

having regard to:

• (d) the composition of HCD's share register; and

• (e) the terms of the Entitlement Offer.

HCD does not believe that any person will increase their voting power in HCD pursuant to the Entitlement Offer in a way that will have any material impact on the control of HCD. In particular, no person presently has a relevant interest in more than 20% of Shares, and no person is expected to have a more than 20% relevant interest in Shares following the Entitlement Offer.

2. Choices available to Eligible Shareholders

2.1 Your choices

Before taking any action, you should read this Offer Booklet in its entirety and, if you have any questions, consult your financial or other professional adviser. If you are an Eligible Shareholder, the following choices are available to you:

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|||
|---|---|
|Option|See Section|
|Take up all or part of your entitlement under the Entitlement Offer|2.2(a)|
|Take up all of your entitlement under the Entitlement Offer and apply for|2.2(c)|
|Additional Shares under the Top-Up Facility|
|Take no action|2.6|

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2.2 How to participate in the Entitlement Offer

• (a) Taking up all of your entitlement

To subscribe for your full entitlement:

• (i) refer to the accompanying Entitlement and Acceptance Form which specifies the payment amount for your full entitlement; and

• (ii) make payment by BPAY® or EFT for your full entitlement by following the instructions on the Entitlement and Acceptance Form.

• (b) Take up part of your entitlement

If you only wish to accept part of your entitlement:

• (i) calculate the payment amount for the portion of your entitlement that you wish to take up in accordance with the partial entitlement section of the Entitlement and Acceptance Form; and

• (ii) make payment by BPAY® or EFT for that portion of your entitlement by following the instructions on the Entitlement and Acceptance Form.

• (c) Applying for Additional Shares under the Top-Up Facility

• If you accept your full entitlement and wish to apply for Additional Shares in excess of your entitlement:

• (i) refer to the Top-Up Facility section in your Entitlement and Acceptance Form; and

• (ii) make payment by BPAY® or EFT of the total payment amount for your full entitlement AND your participation in the Top-Up Facility by following the instructions on the Entitlement and Acceptance Form.

Your application for Additional Shares may not be successful (wholly or partially). The decision in relation to the number of Additional Shares in excess of your entitlement to be allocated to you will be final. No interest will be paid on any application monies received and returned.

(d) Payment

The Application Monies are payable in full on application.

Payments must be received by 5.00 pm (Melbourne time) on the Closing Date and must be in Australian currency and made by BPAY® or EFT.

Please note that when you pay by BPAY® or EFT:

• (i) you do not need to return the Entitlement and Acceptance Form but are taken to have made the declarations on that Entitlement and Acceptance Form;

• (ii) if you do not pay for your entitlement in full, you are deemed to have taken up your Entitlement in respect of such whole number of New Shares which is covered in full by your application monies;

• (iii) if you pay for more than your full entitlement, you are deemed to have applied for such whole number of Additional Shares which is covered in full by your application monies paid in excess of your full entitlement; and

• (iv) if you have multiple holdings you will have multiple unique reference numbers. To ensure that you receive your Entitlement in respect of each holding, you must use the unique reference number shown on each personalised Entitlement and Acceptance Form when paying for any New Shares that you wish to apply for in respect of that holding. Payments in excess of the amount payable for one

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holding will not be treated as payment for another holding, and the excess will be refunded to the Applicant without interest.

It is your responsibility to ensure that funds submitted through BPAY® are received by no later than 5.00 pm (Melbourne time) on the Closing Date. Different financial institutions may implement earlier cut-off times with regards to electronic payment, so please take this into consideration when making payment by BPAY®.

If your payment exceeds the amount required to pay for your Entitlement, then subsequent to the Shortfall Closing Date, any application monies received from you in excess of $1.00 not applied in payment for Shortfall Shares under the Shortfall Offer will be refunded. Any excess funds of $1.00 or less will not be refunded. No interest will be paid on any application monies received or refunded.

No return of Entitlement and Acceptance Forms and no payment by cheque or money order

Due to current COVID related conditions, payments by cheque or money order cannot be accepted. Payments must be made by BPAY® or by EFT and may not be made by cheque or money order.

As such, Applicants do NOT need to return their completed Entitlement and Acceptance Forms to the Company.

Application monies will be held in trust in a subscription account until New Shares are issued. Any interest earned on Application Monies will be for the benefit of HCD and will be retained by HCD irrespective of whether any issue of New Shares takes place.

Representations you will be taken to make by acceptance

By making a payment by BPAY® or EFT, you will be deemed to have:

• (a) acknowledged that you have fully read and understood this Offer Booklet and the Entitlement and Acceptance Form in their entirety and you acknowledge the matters and make the warranties and representations and agreements contained in this Offer Booklet and the Entitlement and Acceptance Form;

• (b) agreed to be bound by the terms of the Entitlement Offer, the provisions of this Offer Booklet and HCD’s constitution;

• (c) authorised HCD to register you as the holder of the New Shares allotted to you;

• (d) declared that you are over 18 years of age and have full legal capacity and power to perform all your rights and obligations under the Entitlement Offer;

• (e) acknowledged that once HCD receives your Entitlement and Acceptance Form or any payment of Application Monies via BPAY®, you may not withdraw your application or funds provided except as allowed by law;

• (f) acknowledged that you have a registered address in Australia or New Zealand or certain other jurisdictions as explicitly consented to by HCD as at the Record Date;

• (g) agreed to apply for and be issued up to the number of New Shares and Additional Shares specified in the Entitlement and Acceptance Form, or for which you have submitted payment of any Application Monies via BPAY® or EFT, at the Issue Price per New Share;

• (h) authorised HCD, the Share Registry and their respective officers, employees or agents to do anything on your behalf necessary for New Shares to be issued to you;

• (i) declared that you were the registered holder at the Record Date of the Shares indicated in the Entitlement and Acceptance Form as being held by you on the Record Date;

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• (j) acknowledged that the information contained in this Offer Booklet and your Entitlement and Acceptance Form is not investment advice nor a recommendation that the New Shares are suitable for you given your investment objectives, financial situation or particular needs;

• (k) acknowledged that this Offer Booklet is not a prospectus, does not contain all of the information that you may require in order to assess an investment in HCD and is given in the context of HCD's past and ongoing continuous disclosure announcements to the ASX;

• (l) acknowledged the statement of risks in the ‘Risk Factors’ Section of this Offer Booklet and that investments in HCD are subject to risk;

• (m) acknowledged that none of HCD or its related bodies corporate, affiliates and none of its or their respective directors, officers, partners, employees, representatives, agents, consultants or advisers, guarantees the performance of HCD, nor do they guarantee the repayment of capital;

• (n) agreed to provide (or direct your nominee to provide) any requested substantiation of your eligibility to participate in the Entitlement Offer and your holding of Shares on the Record Date; and by making a payment by BPAY®or EFT, you will also be deemed to have acknowledged, represented and warranted on behalf of yourself, or on behalf of each person on whose account you are acting that:

• (i) you are not in the United States and are not acting for the account or benefit of a person in the United States, and are not otherwise a person to whom it would be illegal to make an offer or issue New Shares under the Entitlement Offer;

• (ii) you acknowledge that the New Shares have not been, and will not be, registered under the US Securities Act or the securities laws of any state or other jurisdiction of the United States and accordingly, the New Shares may not be offered, sold or otherwise transferred except in accordance with an available exemption from, or in a transaction not subject to, the registration requirements of the US Securities Act and any other applicable securities laws; and

• (iii) you have not and will not send any materials relating to the Entitlement Offer to any person in the United States or a person acting for the account or benefit of a person in the United States.

2.3 No minimum subscription

There is no minimum subscription for an Eligible Shareholder under the Entitlement Offer.

2.4 No cooling off rights

Cooling off rights do not apply to an investment in New Shares. You cannot withdraw your application once it has been made.

2.5 Refunds of excess Application Monies

Any Application Monies received for more than the number of New Shares issued to you will be refunded as soon as reasonably practicable following the close of the Entitlement Offer. No interest will be paid on any Application Monies. Payment of any refund will be made by EFT or a cheque mailed to your address as last recorded in HCD’s register of members.

2.6 If you do nothing

If you do not apply for Shares pursuant to the Entitlement Offer, your entitlement under the Entitlement Offer will lapse.

If you do not apply for Shares pursuant to the Entitlement Offer, your percentage ownership in HCD will be diluted because the issue of New Shares to other Eligible Shareholders under the Entitlement Offer will increase the total number of Shares on issue.

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3. Risk Factors

HCD’s activities are subject to a number of risks which may impact future financial performance and the market price at which New Shares trade. Some of these risks can be mitigated by the use of safeguards and appropriate controls. However, others are outside HCD’s control and cannot be mitigated. Therefore, investors who acquire New Shares may be exposed to a number of risks. Broadly, these risks can be classified as risks that are general to investing in the share market and risks specific to an investment in Shares and HCD’s underlying business.

An investment in HCD carries with it the following risks:

1. General

Due to the inherently uncertain nature of the oil and gas industry, the HCD business carries with it various risks. Shareholders should realise that the value of HCD may fluctuate and that a dividend is not expected to be declared by HCD in the medium term. Whilst HCD will attempt to minimise the following risk factors, many of them are beyond its control. This list of risk factors should not be taken as being exhaustive of the risks faced by HCD. These factors and others not specifically referred to may materially affect the performance of HCD and the value of its shares.

1. Funding Risk

In order to fund the future growth of the HCD business it will be necessary for the Board to consider HCD's potential capital raising needs notwithstanding the funds raised under the current capital raising.

1. Early Stage Risk

The HCD Multiflow business is still at the early stage of its development. This brings with it a variety of potential risks. There is no assurance that HCD will be able to overcome them moving forward.

4. Absence of Revenue Risk

HCD has limited current revenue and there is no certainty that further product sales will be generated.

5. Demand and Supply Risk

Activities within the oil and gas industry by its nature are risky. The operations of customers can be affected by a huge number of factors, risks, issues and costs. These have a potential flow on effect as far as HCD is concerned, potentially putting strain on its customer and channel relationships. Competitive pressures can impact on HCD's ability to successfully engage with the more established channel partners. A detailed list of the key risks associated with investing in New Shares is contained in the Investor Presentation

6. Competitor Risk

HCD operates in a competitive environment. Its competitors will compete with HCD in relation to products and in relation to sales price. HCD's competitors may seek to reverse engineer HCD's products.

7. Operational Risk

HCD is subject to the usual form of operational risks that apply to an international manufacturing/blending business. These include the potential for industrial disputes relating to labour or product logistics, raw material supply risks and costs, capital costs which may be incurred in the event of increased demand, the hiring of appropriately skilled and secure labour, and geopolitical and government risk.

8. Intellectual Property Risk

As set out above, whilst HCD will own the intellectual property relating to the MultiFlow products, it will not be granted access to the formulas and related know-how until completion of the maximum royalty agreement payment in the absence of certain specified exceptions. There is a potential risk which arises simply because these formulas and related know-how are not held directly by HCD.

Page 14

9. Currency Risk

HCD's revenues are expected to be largely denominated in US dollars, whereas its operating costs are expected to be largely denominated in a combination of US dollars and Australian dollars. As an ASX listed entity, HCD reports in Australian dollars. These aspects mean that HCD is potentially exposed to currency and exchange rate risk.

10. Covid Risk

Continuation of travel restrictions and supply chain restraints caused by COVID-19 may impact the sales of HCD products and the delivery of products to customers.

This list is not exhaustive and investors should read this Offer Booklet and the Investor Presentation in their entirety before making an investment decision. Investors should also have regard to their own investment objectives and financial circumstances and should consider seeking appropriate independent investment advice before deciding whether to invest in the New Shares.

4. Further Information

4.1 Taxation

Taxation implications of participating in the Entitlement Offer will vary depending on the particular circumstances of individual Eligible Shareholders. Eligible Shareholders are advised to obtain their own professional taxation advice before making a decision in relation to the Entitlement Offer.

4.2 This Offer Booklet is not a prospectus

The Entitlement Offer is being conducted in accordance with Section 708AA of the Corporations Act (as modified by ASIC Legislative Instrument 2016/84). In general terms, Section 708AA relates to rights issues by certain companies that do not require the preparation of a prospectus or other disclosure document. Accordingly, the level of disclosure in this Offer Booklet is less than the level of disclosure required in a prospectus.

As a result, in deciding whether or not to accept the Entitlement Offer, you should rely on your own knowledge of HCD, refer to disclosures made by HCD to the ASX (which are available for inspection on the ASX website www.asx.com.au and on HCD’s website at www.hydrocarbondynamics.com) and seek the advice of your professional adviser.

Neither ASIC nor ASX, nor any of their officers or employees takes responsibility for this Offer or the merits of the investment to which this Offer relates.

4.3 Holding Statements and trading of New Shares

HCD participates in the Clearing House Electronic Sub-Register System ( CHESS ), in accordance with ASX Listing Rules and operates an electronic issuer-sponsored sub-register and an electronic CHESS sub-register. The two sub-registers together make up HCD’s principal register. Consequently, HCD will not issue certificates to security holders but they will be provided with a holding statement, which will set out the number of Shares allotted to them under this Entitlement Offer.

It is your responsibility to determine your holding of New Shares before trading to avoid the risk of selling New Shares you do not own. To the maximum extent permitted by law, HCD disclaims any liability to persons who trade New Shares before they receive their holding statements, whether on the basis of confirmation of the allocation provided by HCD or the Registry or otherwise, or who otherwise trade or purport to trade New Shares in error or which they do not hold or are not entitled to.

Page 15

4.4 Foreign shareholders

(a) General restrictions

This Offer Booklet and the accompanying Entitlement and Acceptance Form do not constitute an offer in any place in which, or to any person to whom, it would not be lawful to make such an offer. The distribution of this Offer Booklet in jurisdictions outside Australia and New Zealand may be restricted by law and persons who come into possession of this Offer Booklet outside Australia should observe any such restrictions. Any failure to comply with such restrictions may constitute a violation of applicable securities laws. No action has been taken to register or qualify the New Shares or to otherwise permit an offering of New Shares outside Australia and the New Shares may not be offered outside Australia except to the extent permitted below.

Your BPAY® payment will be taken by HCD as a representation by you that there has been no breach of any such laws.

Nominees and custodians may not distribute this document, and may not permit any beneficial shareholder to participate in the Offer, in any country outside Australia and New Zealand except, with the consent of the HCD, to beneficial shareholders resident in certain other countries where HCD may determine it is lawful and practical to make the Entitlement Offer.

(b) New Zealand

The New Shares are not being offered to the public within New Zealand other than to existing shareholders of HCD with registered addresses in New Zealand to whom the offer of these securities is being made in reliance on the transitional provisions of the Financial Markets Conduct Act 2013 (New Zealand) and the and the Financial Markets Conduct (Incidental Offers) Exemption Notice 2016 (New Zealand).

This document has been prepared in compliance with Australian law and has not been registered, filed with or approved by any New Zealand regulatory authority. This document is not a product disclosure statement under New Zealand law and is not required to, and may not, contain all the information that a product disclosure statement under New Zealand law is required to contain.

4.5 Treatment of excluded shareholders

This Offer Booklet and the accompanying Entitlement and Acceptance Form are being sent only to shareholders with registered addresses in Australia and New Zealand, or to shareholders in other jurisdictions where HCD is satisfied that it is lawful to do so. As noted in Section 1.2, HCD is of the view that it is unreasonable to make an offer under the Entitlement Offer to shareholders outside of Australia, New Zealand.

The information in this Offer Booklet has been prepared to comply with the requirements of the securities laws of Australia. To the extent that you hold shares in HCD on behalf of another person resident outside Australia, it is your responsibility to ensure that any participation (including for your own account or when you hold shares in HCD beneficially for another person) complies with all applicable foreign laws and that each beneficial owner on whose behalf you are submitting the personalised Entitlement and Acceptance Form is not in the United States and not acting for the account or benefit of a person in the United States.

This Offer Booklet does not constitute an offer in any jurisdiction in which, or to any person to whom, it would not be lawful to make such an offer. No action has been taken to register or qualify the Entitlement Offer or the New Shares, or otherwise permit the public offering of the New Shares, in any jurisdiction other than Australia and New Zealand.

The distribution of this Offer Booklet and the accompanying Entitlement and Acceptance Form (including an electronic copy) outside Australia may be restricted by law. If you come into possession of this Offer Booklet, you should observe such restrictions and should seek your own advice on such restrictions. Any noncompliance with these restrictions may contravene applicable securities laws.

Page 16

4.6 Privacy

By submitting an Entitlement and Acceptance Form, you will be providing personal information to HCD (directly or through the Share Registry). HCD collects, holds and will use that information to assess and process your application, administer your shareholding in HCD and to provide related services to you. HCD may disclose your personal information for purposes related to your shareholding in HCD, including to the Share Registry, HCD’s related bodies corporate, agents, contractors and third party service providers, including mailing houses and professional advisers, and to ASX and regulatory bodies. You can obtain access to personal information that HCD holds about you. To make a request for access to your personal information held by (or on behalf of) HCD, please contact HCD through the Share Registry.

4.7 Governing law

This Offer Booklet, the Entitlement Offer and the contracts formed on acceptance of the Entitlement Offer are governed by the laws applicable in Victoria, Australia. Each applicant for New Shares submits to the nonexclusive jurisdiction of the courts of Victoria, Australia.

Page 17

5. Glossary and interpretation

5.1 Definitions

In this Offer Booklet, the following words have the following meanings unless the context requires otherwise:

==> picture [425 x 612] intentionally omitted <==

----- Start of picture text -----

||||
|---|---|---|
|New Shares applied for by an Eligible Shareholder that are in excess of the|
|Additional Shares|
|Eligible Shareholder's entitlement|
|Announcement Date|11 February 2022|
|a Shareholder as at the Record Date applying for New Shares under this|
|Applicant|
|Entitlement Offer|
|the sum of the relevant Entitlement Offer and any Additional Shares|
|Application Monies|multiplied by the Issue Price|
|ASIC|the Australian Securities and Investments Commission.|
|ASX Limited or, as the context requires, the financial market known as the|
|ASX|
|Australian Securities Exchange operated by it|
|the official listing rules of the ASX as amended or replaced from time to|
|ASX Listing Rules|
|time|
|Board|the board of directors of HCD|
|means a day which is not a Saturday, Sunday or a public holiday in Victoria,|
|Business Day|
|Australia|
|the deadline for accepting the Entitlement Offer, being 5|.00pm|
|Closing Date|
|(Melbourne time) on 14 March 2022|(subject to change)|
|Company or HCD|Hydrocarbon Dynamics Limited (ABN 75 117 387 354)|
|Corporations Act|Corporations Act 2001|(Cth)|
|Directors|the directors of Hydrocarbon Dynamics Limited|
|Eligible Shareholder|has the meaning given in Section 1.2|
|Entitlement and|the personalised entitlement and acceptance form to subscribe for New|
|Acceptance Form|Shares accompanying this Entitlement Offer Booklet|
|the pro rata non-renounceable offer of New Shares to Eligible Shareholders|
|Entitlement Offer|
|in accordance with the terms of this Offer Booklet|
|the price payable for each New Share under the Entitlement Offer, being|
|Issue Price|
|1.1 cents|
|New Shares|the Shares offered pursuant to the Entitlement Offer|
|Offer Booklet|this offer booklet dated 11 February 2022|
|Record Date|7.00pm (Melbourne time) on 22 February 2022|
|Share|a fully paid ordinary share in the capital of Hydrocarbon Dynamics Limited|
|Shareholder|a registered holder of Shares|
|Share Registry|Automic Pty Ltd|
|a body corporate that is a subsidiary of Hydrocarbon Dynamics Limited|
|Subsidiary|
|within the meaning of the Corporations Act|
|the mechanism by which Eligible Shareholders can apply for Additional|
|Top-Up Facility|
|Shares as described in Section 1.4|
|Underwriting|Means the underwriting agreement between Malangi Pty Ltd and the|
|Agreement|company entered into on 9 February 2022.|
|United States of America, its territories and possessions, any State of the|
|United States|
|United States of America and the District of Columbia|

----- End of picture text -----

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5.2 Interpretation

In this Offer Booklet, unless the context otherwise requires:

• (a) the singular includes the plural, and vice versa;

• (b) words importing one gender include other genders;

• (c) other parts of speech and grammatical forms of a word or phrase defined in this document have corresponding meanings;

• (d) terms used in this document and defined in the Corporations Act have the meanings ascribed to them in the Corporations Act;

• (e) other grammatical forms of a word or phrase defined in this document have a corresponding meaning; and

• (f) a reference to a Section is a reference to a Section of this Offer Booklet.

Page 19

Corporate Directory

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----- Start of picture text -----

|||
|---|---|
|COMPANY NAME|Hydrocarbon Dynamics Limited|
|ASX CODE|HCD|
|DIRECTORS|Stephen Mitchell – Non-Executive Chairman|
|Nick Castellano - Executive Director|
|Andrew Seaton - Non-Executive Director|
|Ray Shorrocks - Non-Executive Director|
|Julie Edwards|
|COMPANY SECRETARY|
|HEAD OFFICE|Level 6|
|412 Collins Street|
|Melbourne VIC 3000|
|SHARE REGISTRY|Automic Pty Ltd|
|Level 5|
|126 Phillip Street|
|Sydney NSW 2000|
|Tel: 1300 288 664 (within Australia)|
|Tel: +61 2 9698 5414 (within and outside Australia)|

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Page 20

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Hydrocarbon Dynamics Limited | ABN 75 117 387 354

All Registry Communication to: GPO Box 5193, Sydney NSW 2001 1300 288 664 (within Australia) +61 2 9698 5414 (international) corporate.actions@automicgroup.com.au www.automicgroup.com.au

[EntityRegistrationDetailsLine1Envelope] [EntityRegistrationDetailsLine2Envelope] [EntityRegistrationDetailsLine3Envelope] [EntityRegistrationDetailsLine4Envelope] [EntityRegistrationDetailsLine5Envelope] [EntityRegistrationDetailsLine6Envelope]

[ReplaceNoImages] Holder Number: [HolderNumberMasked] Shares held as at the Record Date at 7.00 pm (Melbourne time) 22 February 2022 [CumBalance]

ENTITLEMENT AND ACCEPTANCE FORM

OFFER CLOSES 5.00 PM (MELBOURNE TIME) 14 MARCH 2022 (WHICH MAY CHANGE WITHOUT NOTICE)

As an Eligible Shareholder you are entitled to acquire the New Shares in Hydrocarbon Dynamics Limited (New Shares) below for the amount payable. Your entitlement is to one (1) New Share for every three (3) Shares held by Eligible Shareholders registered at the Record Date, at an issue price of $0.011 (1.1 cents) per New Share ( Issue Price ). The Entitlement Offer Booklet dated 11 February 2022 contains information about the Entitlement Offer and you should carefully read the Booklet before applying for Shares. This Entitlement and Acceptance Form should be read in conjunction with the Entitlement Offer Booklet. If you do not understand the information provided in the Entitlement Offer Booklet or you are in doubt as to how you should deal with it, you should seek professional advice. Other than as defined in this Entitlement and Acceptance form, capitalised terms have the same meaning as defined in the Entitlement Offer Booklet.

You do not need to return this form if you have made payment via BPAY® or EFT.

1 ACCEPTANCE OF ENTITLEMENT OR PART THEREOF

		Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)		Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied	Number of Shares Applied
Full Entitlement						[EntPayable]												[Entitlement]
Partial Entitlement					,				,				,

2 APPLICATION FOR SHORTFALL SHARES

As a Shareholder, you are invited to apply for Shortfall Shares , providing you have taken up your full Entitlement.

		Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)	Payment Amount A$ ($0.011 per Share)		Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied	Number of Shortfall Shares Applied
Shortfall Application					,				,				,

No fractional shares will be issued. If the dollar amount for additional shares, divided by the issue price ($0.011), is a fraction of a New Share, the New Shares allotted will be rounded down).

3 MAKE YOUR PAYMENT BY BPAY® OR ELECTRONIC FUNDS TRANSFER (EFT)

Payments must be made by BPAY® or by EFT and may not be made by cheque or money order.

Total Payment A$ , , , Option A – BPAY® Option B – Electronic Funds Transfer (EFT) Biller Code: 285924 The unique reference number which has been assigned to your Application is: [HolderId]-4213-HCD Ref No: [BPayCRN]

The unique reference number which has been assigned to your Application is: [HolderId]-4213-HCD

Funds are to be deposited in AUD currency directly to following bank account: Account name: Automic Pty Ltd Account BSB: 036011 Account number: 576050 Swift Code: WPACAU2S IMPORTANT: You must quote your unique reference number as your payment reference/ description when processing your EFT payment . Failure to do so may result in your funds not being allocated to your application and Shares subsequently not issued.

Contact your financial institution to make your payment from your cheque or savings account.

Note: You do not need to return this form if you have made IMPORTANT: You must quote your unique reference number as your payment via BPAY® or EFT. Your BPAY® reference number or payment reference/ description when processing your EFT payment . unique reference number will process your payment for your Failure to do so may result in your funds not being allocated to your application application for New Shares electronically. and Shares subsequently not issued. Due to current COVID related conditions, payments by cheque or money order cannot be accepted. Payments must be made by BPAY® or by EFT and may not be made by cheque or money order.

4

RETURN THE APPLICATION FORM - Elect to receive email communication & provide your banking details Return to Automic Group (the Share Registry or Automic) by email to corporate.actions@automicgroup.com.au

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----- Start of picture text -----

Telephone Number Contact Name (PLEASE PRINT) HCD[HolderId]
( )
Please insert your email address if you wish to elect to be an e-Shareholder, and you consent to receiving communications from the Share Registry
BSB Account Number Name of Australian Bank / Financial Institution
-
Name in which account is held (e.g. John Smith)
Signature Date:
/ /
I/We authorise you to act in accordance with my/our instructions set out above. I/We acknowledge that these instructions supersede and
have priority over all previous instructions relating to payments to which I/we am/are entitled to be paid in cash.
----- End of picture text -----

INSTRUCTIONS FOR COMPLETION OF THIS FORM

The right to participate in the Entitlement Offer is optional and is offered exclusively to all Shareholders who are registered as holders of fully paid ordinary shares in the capital of the Company on the Record Date with a registered address in Australia or New Zealand ( Eligible Shareholders ).

ACCEPTANCE OF OFFER

By making a BPAY® or EFT payment:

• you represent and warrant that you have read and understood the Entitlement Offer Booklet and that you acknowledge the matters, and make the warranties and representations contained therein and in this Entitlement and Acceptance Form;

• you provide authorisation to be registered as the holder of Shares acquired by you and agree to be bound by the Constitution of the Company.

1 Acceptance of Full or Partial Entitlement for Shares

If you wish to accept your full entitlement:

• make payment by BPAY® or EFT for your full entitlement by following the instructions on this Entitlement and Acceptance Form.

If you only wish to accept part of your entitlement:

• calculate the payment amount for the portion of your entitlement that you wish to take up in accordance with the partial entitlement section of this Entitlement and Acceptance Form; and

• make payment by BPAY® or EFT for that portion of your entitlement by following the instructions on this Entitlement and Acceptance Form.

2

Applying for Shortfall Shares

If you accept your full entitlement and wish to apply for Shortfall Shares in excess of your entitlement:

• make payment by BPAY® or EFT of the total payment amount for your full entitlement AND your participation in the Shortfall Offer by following the instructions on this Entitlement and Acceptance Form.

Your application for Shortfall Shares may not be successful (wholly or partially). The decision in relation to the number of Shortfall Shares in excess of your entitlement to be allocated to you will be final. No interest will be paid on any application monies received and returned.

3 Payment

By making a payment via BPAY or EFT, you agree that it is your responsibility to ensure that funds are submitted correctly and received by Automic Share Registry by the closing date and time. Payment must be received by the Share Registry by 5:00pm (Melbourne time) on 14 March 2022.

Payment by BPAY®: You can make a payment via BPAY® if you are the holder of an account with an Australian financial institution that supports BPAY® transactions. To BPAY® this payment via internet or telephone banking use your reference number on this Form. Multiple acceptances must be paid separately.

Payment by EFT: You can make a payment via Electronic Funds Transfer “EFT”. Multiple acceptances must be paid separately. Please use your unique reference on this Form. This will ensure your payment is processed correctly to your application electronically.

Applicants should be aware of Automic’s financial institution’s cut off-time, their own financial institution’s cut-off time and associated fees with processing a funds transfer. It is the Applicant’s responsibility to ensure funds are submitted correctly by the closing date and time, including taking into account any delay that may occur as a result of payments being made after 5pm (Melbourne time) and/or on a day that is not a business day (payment must be made to be processed overnight). You do not need to return this Form if you have made payment via BPAY® or EFT. Your reference number will process your payment to your application electronically and you will be deemed to have applied for such shares for which you have paid.

3 Contact Details - Elect to receive email communication and provide your banking details

As a valued shareholder in Hydrocarbon Dynamics Limited, the Company encourages shareholders to elect to receive their shareholder communications electronically. This will ensure you receive all future important shareholder communications in a faster and more secure way and reduce the environmental footprint of printing and mailing. To expedite the refund process, shareholders are also encouraged to provide their nominated bank account details. Please enter your details at the top of page 2 and return to the Company’s Share Registry by email to corporate.actions@automicgroup.com.au. This section must be signed.

If you require further information about the Offer, please contact Automic on 1300 288 664 or +61 2 9698 5414 between 8:30am and 5:00pm (AEST).