Director dealing

28 April 2016

Sirius Minerals Plc

Director dealing

Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or the "Company") was notified on 27 April 2015 that on that day Elizabeth Noel Harwerth, non-executive director, purchased 49,608 of the Company's 0.25p ordinary shares at an average price of 18.12p each.

Following this transaction, Elizabeth Noel Harwerth has a beneficial interest in 69,465 shares representing 0.003% of the issued share capital of the Company.

As at the date of this announcement, the Company's issued share capital consists of 2,294,744,698 ordinary shares with voting rights. This figure may be used by shareholders in the Company as the denominator for the calculation by which they will determine if they are required to notify their interest in, or a change of interest in, the share capital of the Company under the Financial Conduct Authority'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.