NANOSONICS LIMITED — Capital/Financing Update 2012

May 10, 2012

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11 May 2012

Company Announcements Office Australian Securities Exchange

Nanosonics announces details of Share Purchase Plan

Following the announcement on 4 May 2012 of the successful placement of shares to raise $15.5 million from institutional and sophisticated investors, Nanosonics Limited (ASX: NAN) is pleased to advise the details of the Share Purchase Plan (SPP) that was announced at the same time.

Under the Share Purchase Plan, Nanosonics will offer up to 9.43 million shares at an issue price of $0.53 to raise $5.0 million, if fully subscribed.

As previously announced, the funds raised will be used towards:

• Working capital to support sales, distributor and marketing programs

• Investment in expanding direct sales resources in key markets

• Continued investment in development of promising additional products utilising the Company’s proprietary technology

• Scaling-up manufacturing

The key dates of the SPP are as follows:

Event Date Record Date 3 May 2012 SPP Opening Date 16 May 2012 SPP Closing Date 5.00pm on 25 June 2012 Allotment Date 29 June 2012 Trading Date 3 July 2012 Dispatch of Holding Statements 3 July 2012

The SPP Offer and related documentation will be issued by 16 May 2012.

Nanosonics Limited

McGregor Grant Company Secretary

Nanosonics Limited ABN 11 095 076 896 Unit 24 566 Gardeners Road Alexandria NSW 2015 Australia Tel: +61 2 8063 1600 Fax: +61 2 9317 5010 Email: info@nanosonics.com.au w: www.nanosonics.com.au