16 August 2019

Proton Partners International Limited

(to be renamed Rutherford Health plc)

Director's exercise of options

Proton Partners International Limited ("the Company") announces that it has been informed by Paul Tuson, the Company's Chief Financial Officer, that he has exercised options under the Company's share option scheme, to acquire 10,000 ordinary shares of 0.001p each ("Ordinary Shares") at a price of GBP1.00 per Ordinary Share.

Following the issue of these shares, Paul Tuson will hold 1,541,012 Ordinary Shares representing 0.9 per cent. of the Company's total voting rights.

The notification below, made in accordance with the requirements of the EU Market Abuse Regulation, provides further detail.

Admission and dealings

Application has been made for the admission to trading on NEX of the 10,000 Ordinary Shares with admission expected to take place on 20 August 2019.

Total voting rights

Following Admission, the Company will have 172,598,260 Ordinary Shares in issue. For the purposes of the Financial Conduct Authority's Disclosure Guidance and Transparency Rules ("DTRs"), the Company has 172,598,260 Ordinary Shares in issue with voting rights attached. The Company holds no shares in treasury. This figure of 172,598,260 may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in the Company, under the DTRs

The directors of Proton Partners International Limited accept responsibility for this announcement.