16 May 2017

SigmaRoc plc

('SigmaRoc' or the 'Company')

Directors' Dealings

SigmaRoc plc, the AIM listed construction materials business (AIM: SRC), announces that, on 12 May 2017, David Barrett, Executive Chairman of SigmaRoc, and Max Vermorken, Chief Executive Officer, acquired 125,000 and 25,000 of the Company's existing £1 nominal value convertible loan notes (the 'Convertible Loan Notes') respectively.

The Convertible Loan Notes were created and issued on completion of the acquisition of the Company's wholly owned subsidiary, Ronez Limited, on 5 January 2017. Details on the terms of the Convertible Loan Notes can be found in paragraph 13 of Part 1 of the Company's Admission Document, dated 15 December 2016.

PDMR Notification Forms:

The notifications below are made in accordance with the requirements of MAR.

**ENDS**

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014. Upon the publication of this announcement via Regulatory Information Service, this inside information is now considered to be in the public domain.

For further information, please visit www.sigmaroc.com or contact:

SigmaRoc plc                                                                                                  +44(0)207 129 7828

Max Vermorken                                                                                  

Strand Hanson Limited (Nominated and Financial Adviser)                            +44(0)207 409 3494

James Spinney

James Dance

Zeus Capital Limited (Joint Broker)                                                                  +44(0)203 829 5000

Rob Collins

Alex Wood

Berenberg (Joint Broker)                                                                                 +44(0)203 207 7800

Ben Wright

Laure Fine

Temple Bar Advisory (Public Relations Advisor)                                              +44(0)207 002 1080

Ed Orlebar

Tom Allison

Alycia MacAskill