5 September 2017

Sirius Minerals Plc

Director/PDMR Dealing

Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them.

1

Details of the person discharging managerial responsibilities/person closely associated

a)

Name

Elizabeth Noel Harwerth

2

Reason for the notification

a)

Position/status

Non-Executive Director

b)

Initial notification/ Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Sirius Minerals Plc

b)

LEI

n/a

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Shares

GB00B0DG3H29

b)

Nature of the transaction

Purchase of shares

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£0.2684

7,373

d)

Aggregated information

- Aggregated volume

- Price

7,373

£0.2684

e)

Date of the transaction

4 September 2017

f)

Place of the transaction

London Stock Exchange

For further information, please contact:

Sirius Minerals Plc

Investor Relations Manager

Tristan Pottas

Email:ir@siriusminerals.com

Tel: +44 845 524 0247

Media enquiries

Tavistock

Jos Simson

Emily Fenton

Tel: +44 20 7920 3150

About Sirius Minerals Plc

Sirius Minerals Plc is thefertilizer development company focused on the construction and development of its North Yorkshire polyhalite project in the United Kingdom (the 'Project').It believes the Project represents the world'slargest high-grade known deposit of polyhalite, a multi-nutrient form of potash containing potassium, sulphur, magnesium and calcium. Incorporated in 2003, Sirius Minerals Plc's shares are traded on the London Stock Exchange's Main Market. Further information on the Company can be found at: www.siriusminerals.com.

Sirius Minerals plc published this content on 05 September 2017 and is solely responsible for the information contained herein.
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