HYDROCARBON DYNAMICS LIMITED — Share Issue/Capital Change 2025

Nov 16, 2025

Appendix 3H - Notification of cessation of securities

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Announcement Summary

Entity name

HYDROCARBON DYNAMICS LIMITED

Announcement Type

New announcement

Date of this announcement

Monday November 17, 2025

Details of +securities that have ceased

		Number of
ASX +security		+securities that	The +securities have	Date of
code	Security description	have ceased	ceased due to	cessation
HCDAJ	OPTION EXPIRING	144,763,447	Expiry of option or other	15/11/2025
	15-NOV-2025 EX $0.005		convertible security without
			exercise or conversion

Refer to next page for full details of the announcement

Appendix 3H - Notification of cessation of securities

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Appendix 3H - Notification of cessation of securities

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Part 1 - Announcement Details

1.1 Name of +Entity

HYDROCARBON DYNAMICS LIMITED

We (the entity named above) provide the following information about our issued capital.

1.2 Registered Number Type Registration Number ACN 117387354

1.3 ASX issuer code

HCD

1.4 The announcement is

New announcement

1.5 Date of this announcement

17/11/2025

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Appendix 3H - Notification of cessation of securities

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Part 2 - Details of +equity securities or +debt securities that have ceased

ASX +Security Code and Description

HCDAJ : OPTION EXPIRING 15-NOV-2025 EX $0.005

Unquoted +equity securities that have ceased

Number of securities that have ceased

144,763,447

Reason for cessation

Expiry of option or other convertible security without exercise or conversion

Date of cessation Is the entity paying any consideration for the cessation? No 15/11/2025

Any other information the entity wishes to notify to ASX about the cessation?

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Appendix 3H - Notification of cessation of securities

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Part 3 - Issued capital following changes

Following the cessation of the +securities the subject of this notification, the issued capital of the entity will comprise:

The figures in parts 3.1 and 3.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing.

3.1 Quoted +equity securities and +debt securities (total number of each +class of +securities quoted on ASX)

	Total number of
ASX +security code and description	+securities on issue
HCD : ORDINARY FULLY PAID	1,437,479,598
3.2 Unquoted +equity securities (total number of each +class of +equity securities issued but not quoted on ASX)
	Total number of
ASX +security code and description	+securities on issue
HCDAH : OPTION EXPIRING 05-FEB-2026 EX $0.015	40,000,001
HCDAJ : OPTION EXPIRING 15-NOV-2025 EX $0.005	0

3.2 Unquoted +equity securities (total number of each +class of +equity securities issued but not quoted on ASX)

Note: the figures stated in the tables above are used to calculate the total market capitalisation of the entity published by ASX from time to time. The table will not include those classes of +securities that have ceased or lapsed in their entirety in ASX records before the announcement date described in Q1.5, even if the entity has advised ASX of a change to that class of +security in Part 2 of this form.

Appendix 3H - Notification of cessation of securities

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