BIOTRON LIMITED — Board/Management Information 2025

Jul 15, 2025

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Level 2, 66 Hunter Street Sydney NSW 2000 Tel: (61-2) 9300 3344 Fax: (61-2) 9221 6333 E-mail: pnightingale@biotron.com.au Website: www.biotron.com.au

16 July 2025

The Manager Companies ASX Limited 20 Bridge Street SYDNEY NSW 2000

(3 pages by email)

Dear Sir / Madam

APPOINTMENT OF NON-EXECUTIVE DIRECTOR

The Board of Biotron Limited (‘Biotron’ or the ‘Company’) is pleased to announce the appointment of Mr. Michael Medway as Non-Executive Director, effective today.

Michael has worked in the professional accounting industry for over 30 years. He has been a Chartered Accountant for over 30 years, and his background has seen him work across various firms in Sydney and Regional NSW where he provided a range of professional accounting services to a variety of small to medium enterprises.

He is currently a Director of Maas Group Holdings Limited (ASX: MGH) which he was appointed to during its IPO process in 2020. He has also been a Director to a variety of successful small to medium sized enterprises utilising his knowledge and experience gained through his professional accounting background.

Michael holds a Bachelor of Business (Accountancy) from The University of Technology, Sydney and is a graduate of the Australian Institute of Company Directors.

Biotron’s Chairman, Michael Hoy said “We are delighted with the appointment of someone with the calibre of Michael as a Non-Executive Director of the Company. He brings a wealth of knowledge and experience to Biotron.”

In accordance with Listing Rule 3.19A, I attach an Appendix 3X, Initial Director's Interest Notice, for Michael Medway.

This announcement has been approved by the Managing Director, Dr Michelle Miller.

Yours faithfully,

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Michelle Miller Managing Director

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Appendix 3X Initial Director’s Interest Notice

Rule 3.19A.1

Appendix 3X

Initial 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	BIOTRON LIMITED
ABN	60 086 399 144

We (the entity) give ASX the following information under listing rule 3.19A.1 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	MICHAEL MEDWAY
Date of appointment	16 JULY 2025

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

N/A

• See chapter 19 for defined terms.

11/3/2002

Appendix 3X

Appendix 3X Initial Director’s Interest Notice

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

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 giving rise to the relevant interest.3M Holdings Pty Limited<3M Investment Spec A/C>(Where the director holds a beneficial interest)	Number & class of Securities18,999,671 ordinary fully paid shares

Part 3 – 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
No. and class of securities to which interestrelates	N/A

• See chapter 19 for defined terms.

11/3/2002

Appendix 3