AMBERTECH LIMITED — Board/Management Information 2025

Nov 24, 2025

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25 November 2025

AMO ANNOUNCES RETIREMENT OF CHAIR

Ambertech Limited (ASX: AMO) (Ambertech or the “Company”) would like to advise that long serving Chair, Mr Peter Wallace, will be retiring from the Ambertech Board of Directors, effective from 31 December 2025.

Peter has been the Chair of Ambertech since October 2002 and has also held roles on both the Audit and Risk Management Committee and the Remuneration and Nomination Committee. As Chair of the AMO Board he successfully oversaw the IPO and ASX Listing of Ambertech in December 2004.

On behalf of the Board, Executive team and all employees, I would like to acknowledge and thank Peter for his outstanding contribution to Ambertech over the past 23 years and wish him all the very best for the future.

An Appendix 3Z – Final Director’s Interests Notice for Mr Wallace will be lodged separately.

Ongoing Structure of the Board

Considering the pending retirement of Mr Wallace, the Board anticipates appointing Mr Tom Amos as the interim Chair. Mr Amos will then oversee a formal process evaluating the requirements of the Board now and into the future. The Board has taken steps to ensure seamless governance continuity throughout this transition.

On Behalf of the Board of Ambertech Limited

Yours sincerely

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Robert Glasson Company Secretary Ambertech Limited