NANOSONICS LIMITED — Director's Dealing 2025

May 4, 2025

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5 May 2025

Company Announcements Office Australian Securities Exchange

Appendix 3Y Change of Director’s Interest Notice

Attached is an Appendix 3Y - Change of Director’s Interest Notice in respect of changes in the relevant interests in securities held by Mr Michael Kavanagh, Chief Executive Officer & President.

On 30 April 2025, Mr Kavanagh sold a total of 100,000 Ordinary Shares. The sale of shares by Mr Kavanagh was required to fund a tax liability arising from the exercise of Nanosonics securities.

Following this change, Mr Kavanagh continues to hold 1,256,723 shares. In addition, Mr Kavanagh holds 1,569,840 Rights, which are subject to various vesting conditions.

Authorised for release by Matthew Carbines, Secretary.

Nanosonics Limited ABN 11 095 076 896 Building A, Level 1, 7-11 Talavera Road, Macquarie Park, NSW 2113 Australia Tel: +61 2 8063 1600 Fax: +61 2 8063 1600 Email: info@nanosonics.com.au w: www.nanosonics.com.au

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 Nanosonics Limited ABN 11 095 076 896

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	Mr Michael Kavanagh
Date of last notice	12 March 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	a) Indirect Interest b) Indirect Interest c) Indirect Interest d) Indirect Interest e) Direct Interest f) Indirect Interest g) Indirect Interest
Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest.	a) Performance Rights held in the Nanosonics Omnibus Equity Plan. b) Service Rights held in the Nanosonics Omnibus Equity Plan. c) Share Appreciation Rights held in the Nanosonics Omnibus Equity Plan. d) Ordinary Shares held by the trustee of the Nanosonics Employee Equity Trust. e) N/A f) Ordinary Shares held by the trustee of the Nanosonics Employee Equity Trust. g) Performance Rights held in the Nanosonics Equity Plan
Date of change	30 April 2025 and 1 May 2025 (Settlement Dates)

• See chapter 19 for defined terms.

01/01/2011 Appendix 3Y Page 1

Appendix 3Y Change of Director’s Interest Notice

No. of securities held prior to change	a) 363,925 Performance Rights held in the Nanosonics Omnibus Equity Plan b) 44,054 Service Rights held in the Nanosonics Omnibus Equity Plan c) 283,930 Share Appreciation Rights held in the Nanosonics Omnibus Equity Plan d) 673,360 (Indirect) Ordinary Shares e) 683,363 (Direct) Ordinary Shares f) 856,017 Performance Rights held in the Nanosonics Equity Plan g) 21,914 Service Rights held in the Nanosonics Equity Plan
Class	a) Performance Rights (Nanosonics Omnibus Equity Plan) b) Service Rights c) Share Appreciation Rights d) Ordinary Shares e) Ordinary Shares f) Performance Rights (Nanosonics Equity Plan) g) Service Rights (Nanosonics Equity Plan)
Number acquired	Nil
Number disposed	100,000 Ordinary Shares (being 50,000 Ordinary Shares with a settlement date of 30 April 2025, and 50,000 Ordinary Shares with a settlement date of 1 May 2025).
Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation	$464,978.88 (ex brokerage) in total
No. of securities held after change	a) 363,925 Performance Rights held in the Nanosonics Omnibus Equity Plan b) 44,054 Service Rights held in the Nanosonics Omnibus Equity Plan c) 283,930 Share Appreciation Rights held in the Nanosonics Omnibus Equity Plan d) 0 (Indirect) Ordinary Shares e) 1,256,723 (Direct) Ordinary Shares f) 856,017 Performance Rights held in the Nanosonics Equity Plan g) 21,914 Service Rights held in the Nanosonics Equity Plan

• See chapter 19 for defined terms.

Appendix 3Y Page 2

01/01/2011

Appendix 3Y Change of Director’s Interest Notice

Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy- back	Sale of 100,000 Ordinary Shares held directly. Note: In addition, 673,360 Ordinary Shares previously held indirectly in the Nanosonics Employee Equity Trust are now held directly by Mr Kavanagh.

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
Name of registered holder (if issued securities)
Date of change
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
Interest acquired
Interest disposed
Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation
Interest after change

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? If so, was prior written clearance provided to allow the trade to proceed during this period? If prior written clearance was provided, on what date was this provided?

Director: Mr Michael Kavanagh

• See chapter 19 for defined terms.

01/01/2011 Appendix 3Y Page 3

Appendix 3Y Change of Director’s Interest Notice

Date: 5 May 2025

• See chapter 19 for defined terms.

Appendix 3Y Page 4

01/01/2011