Sirius Minerals Regulatory News (SXX)

9 August 2016

Sirius Minerals Plc

Block Listing Application - update

Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or the "Company") provides an update on the block listing application announcement made on 19 July 2016.

All of the referenced 5,975,000 ordinary shares in the Company (the "Block Listing Shares") have subsequently been issued. No more of these Block Listing Shares will therefore be issued.

Following admission of the Block Listing Shares, the Company's enlarged issued share capital will comprise 2,313,369,115 ordinary shares with voting rights. This figure 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.

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About Sirius Minerals Plc

Sirius Minerals is the fertilizer development company focused on the development of its North Yorkshire polyhalite project, the United Kingdom. It 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.