Share Issue Update Following Warrant Conversions

1 October 2015

Sirius Minerals Plc

Share Issue Update Following Warrant Conversions

The Directors of Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or the "Company") hereby provide an update in respect of the warrants issued to investors on 14 March 2014, in connection with the placing by the Company on 6 March 2014.

As per the announcement of 28 May 2015, a block listing application was made to the London Stock Exchange for the admission to trading on AIM of up to 179,351,029 ordinary shares in the Company (the "Block Listing Shares"). The Block Listing Shares are the total number of shares that could be issued pursuant to the exercise of warrants issued.

Since the last announcement on 1 September 2015, pursuant to the valid exercise of warrants by individual warrant holders, 1,403,693 Block Listing Shares have been issued and credited as fully paid, meaning a total of 52,804,776 Block Listing Shares have been issued to date, providing the Company with warrant exercise proceeds to date of approximately £9.5m and equating to approximately 29.4 per cent of the total warrants. These shares rank pari passu in all respects with all existing ordinary shares of the Company. 

Accordingly, the Company's enlarged issued share capital now comprises 2,218,171,957 ordinary shares with voting rights. This figure of 2,218,171,957 ordinary shares 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 in their interest in, the share capital of the Company under the FCA's Disclosure and Transparency Rules.

The remaining 126,546,253 Block Listing Shares will continue to be issued from time to time pursuant to the exercise of warrants by individual warrant holders during the relevant exercise period. The Company will continue to update the total shares on issue on its website on a regular basis.

Further information relating to the warrants, including in relation to how to exercise the warrants, can be found on the Company website: www.siriusminerals.com/investors/warrants and background is available via the Company's 'Results of Placing' announcement which was made on 6 March 2014.

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About Sirius Minerals Plc

Sirius Minerals is the fertilizer development company focused on the development of the York Potash Project in the United Kingdom, which has the world's largest and highest grade deposit of polyhalite, a multi-nutrient form of potash containing potassium, sulphur, magnesium and calcium. Incorporated in 2003, Sirius Minerals' shares are traded on the London Stock Exchange's AIM market. Its shares are also traded in the United States on the OTCQX through a sponsored ADR facility. Further information on the Company can be found at: www.siriusminerals.com.