Director dealing

18 August 2014

Sirius Minerals Plc

Director dealing

The Directors of Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or "the Company") has today been notified that two entities in which Mr CN Fraser has a beneficial interest have today acquired 342,000 of the Company's 0.25p ordinary shares ("Ordinary Shares").

Desmo Super Pty Limited as trustee of Desmo Superannuation Fund, of which Mr CN Fraser is a beneficiary, has purchased 178,000 Ordinary Shares at an average price of 11.66p per share. C & J Fraser Investments Pty Limited as trustee for The Fraser Family Trust, of which Mr CN Fraser is a beneficiary, has purchased 164,000 Ordinary Shares at an average price of 11.66p per share.

Following this transaction, Mr CN Fraser has an indirect beneficial interest of 122,628,314 shares representing 6.54% of the Company's issued share capital.

As at the date of this announcement, the Company's issued share capital consists of 1,874,150,098. 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 a potash development company with properties in the United Kingdom (North Yorkshire) and the United States (North Dakota). Its primary focus is the development of the York Potash Project 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.