Exercise of Broker Option

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS RESTRICTED AND IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES, REPUBLIC OF IRELAND, AUSTRALIA, CANADA, JAPAN, SOUTH AFRICA OR ANY OTHER JURISDICTION IN WHICH SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL.

7 August 2017

Defenx PLC("Defenx" or the "Company")

Exercise of Broker Option

Further to the announcement made this morning that it has raised a total of £1.425 million (before expenses) with new and existing investors, Defenx is pleased to announce that it has raised additional gross proceeds of approximately £0.32 million via the Broker Option. An additional 198,937 New Ordinary Shares have been placed by WH Ireland Limited in conjunction with Beaufort Securities Limited at a price of 160 pence per share.

As such, a total of 1,089,562 New Ordinary Shares have been placed via the Placing, Subscription and Broker Option, raising gross proceeds for the Company of £1.74 million.

Application will be made for the 734,375 Placing Shares and 198,937 Broker Option Shares to be admitted to trading on AIM. Admission and dealings in the new shares is expected to take place at 8.00 a.m. on 11 August 2017. Following Admission, Defenx will have 12,796,104 Ordinary Shares in issue and admitted to trading on AIM.

Application will be made for the 156,250 Subscription Shares to be admitted to trading on AIM. It is expected that admission of the Subscription Shares will become effective by 8.00 a.m. on 1 September 2017 and that dealings in the Subscription Shares will commence at that time. Following admission of the Subscription Shares to trading on AIM, Defenx will have 12,952,354 Ordinary Shares in issue and admitted to trading on AIM.

The figures, therefore, of 12,796,104 Ordinary Shares and 12,952,354 Ordinary Shares respectively may be used by Shareholders, from the appropriate time, as the denominator for the calculations by which they will determine whether they are required to notify their interest in, or a change to their interest in, the share capital of Defenx under the Financial Conduct Authority's Disclosure Guidance and Transparency Rules. Defenx holds no Ordinary Shares in treasury.

Defined terms used in this announcement bear the same meaning as those used in the announcement released this morning.

Enquiries

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014.