Atlantic Lithium Limited — Director's Dealing 2025

Dec 10, 2025

11 December 2025

Notice of Changes to Directors’ Interests

The Board of Atlantic Lithium Limited (AIM: ALL, ASX: A11, GSE: ALLGH, “Atlantic Lithium” or the “Company”), the Africa-focused lithium exploration and development company targeting the delivery of Ghana's first lithium mine, provides notice of changes to directors’ interests in accordance with listing rule 3.19A.2, and as agent for the following directors for the purposes of section 205G of the Corporations Act 2001 (Cth):

• Keith Muller

Authorised for release by Amanda Harsas, Finance Director and Company Secretary, Atlantic Lithium Limited.

11 December 2025

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For any further information, please contact:

Atlantic Lithium Limited

Keith Muller (Chief Executive Officer)

Amanda Harsas (Finance Director and Company Secretary)

[www.atlanticlithium.com.au ]

IR@atlanticlithium.com.au

Tel: +61 2 8072 0640

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Yellow Jersey PR Limited Canaccord Genuity Limited SP Angel Corporate Finance LLP Charles Goodwin Financial Adviser: Nominated Adviser Jeff Keating Bessie Elliot Raj Khatri (UK) / Charlie Bouverat atlantc@yellowjerseypr.com Duncan St John, Christian Calabrese Tel: +44 (0)20 3004 9512 (Australia) Tel: +44 (0)20 3470 0470 Corporate Broking: James Asensio Tel: +44 (0) 20 7523 4500

Notes to Editors:

About Atlantic Lithium

www.atlanticlithium.com.au

Atlantic Lithium is an AIM, ASX, and GSE-listed lithium company advancing its flagship project, the Ewoyaa Lithium Project, a lithium spodumene pegmatite discovery in Ghana, through to production to become the country’s first lithium-producing mine.

The Company published a Definitive Feasibility Study in respect of the Project in July 2023. The Project was awarded a Mining Lease in October 2023, an Environmental Protection Authority (“EPA”) Permit in September 2024, and a Mine Operating Permit in October 2024 and is being developed under an earn-in agreement with Elevra Lithium Inc.

Atlantic Lithium holds a portfolio of lithium projects within 509km[2] and 771km[2] of granted and under-application tenure across Ghana and Côte d'Ivoire respectively, which, in addition to the Project, comprises significantly under-explored, highly prospective licences.

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Notice of Changes to Directors’ Interests

Page 2 of 2

Appendix 3Y Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of 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 30/09/01 Amended 01/01/11

Name of entity: Atlantic Lithium Limited

ABN: 17 127 215 132

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Keith Muller
Date of last notice	26 November 2025

Part 1 - Change of director’s relevant interests in securities

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.

Direct or indirect interest	Direct and Indirect
Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest.	Securities registered in the name of Muller CT Holdings Pty Ltd as trustee for the Muller Family Trust
Date of change	11 December 2025
No. of securities held prior to change	Direct interest: 765,217 Ordinary Shares Indirect interest: 217,720 Performance Rights with a vesting date 31 July 2025 816,450 Performance Rights with a vesting date 31 July 2026 1,086,128 Performance Rights with a vesting date 31 July 2027
Class	Ordinary Shares Performance Rights

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 1

Appendix 3Y Change of Director’s Interest Notice

Number acquired	217,720 Ordinary Shares
Number disposed	217,720 Performance Rights with a vesting date 31 July 2025
Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation	Nil
No. of securities held after change	Direct interest: 765,217 Ordinary Shares Indirect interest: 217,720 Ordinary Shares 816,450 Performance Rights with a vesting date 31 July 2026 1,086,128 Performance Rights with a vesting date 31 July 2027
Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Exercise of vested Performance Rights

Part 2 – Change of director’s interests in contracts

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.

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder (if issued securities)	N/A
Date of change	N/A
No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed	N/A
Interest acquired	N/A
Interest disposed	N/A

• See chapter 19 for defined terms.

Appendix 3Y Page 2

01/01/2011

Appendix 3Y Change of Director’s Interest Notice

Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation	N/A
Interest after change	N/A

Part 3 –[+] Closed period

Part 3 –+Closed period
Were the interests in the securities or contracts detailed above traded during a+closed period where prior written clearance was required?	No
If so, was prior written clearance provided to allow the trade to proceed during this period?	N/A
If prior written clearance was provided, on what date was this provided?	N/A

• See chapter 19 for defined terms.

01/01/2011

Appendix 3Y Page 3