Plexus Regulatory News (POS)

Plexus Holdings PLC / Index: AIM / Epic: POS / Sector: Oil equipment & services

19 June 2013

Plexus Holdings PLC ('Plexus' or 'the Company')

Exercise of Options

Plexus Holdings PLC, the AIM quoted oil and gas engineering services business and owner of the proprietary POS-GRIP® friction-grip method of wellhead engineering, announces the receipt of Exercise Notices from an employee in relation to 10,000 share options issued in June 2007 and 12,000 share options issued in December 2009. Therefore, the Company has issued and allotted 10,000 new Ordinary Shares of 1p per share ('Ordinary Shares') at 38.5p per share, plus 12,000 Ordinary Shares at 41p per share, raising a total of £8,770.

An application has been made for the 22,000 new Ordinary Shares, which will rank pari passu with the Company's existing Ordinary Shares, to be admitted to trading on AIM and trading in such shares is expected to commence on 21 June 2013.

Following the issue of the Ordinary Shares, the total number of shares in issue and the total number of ordinary shares in the Company with voting rights will be 82,768,672. 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 Service Authority's Disclosure and Transparency Rules.

**ENDS**

For further information please visit www.posgrip.com or contact:

Notes to Editors

Plexus Holdings PLC, which began trading on AIM in December 2005, is an oil and gas engineering and services business, which supplies wellhead and mudline suspension equipment for exploration and production applications. Based in Aberdeen, with offices in London, Cairo, Kuala Lumpur and a presence in Houston, Texas, it has developed and patented a friction-grip method of engineering for oil and gas field wellheads and connectors, POS-GRIP®, which involves deforming one tubular member against another to effect gripping and sealing.

The Company plans to accelerate the roll out of POS-GRIP wellhead equipment as a superior alternative to current technology and for it to become the future industry standard for wellhead design. In particular, the technology has advantages in High Pressure/High Temperature (HP/HT) and Extreme HP/HT (X-HP/HT) oil and gas environments, for which there is growing global demand and where Plexus is being increasingly recognised as the supplier of choice. Importantly, the Company is focussed on extending its proprietary technology into an increasing number of subsea applications. In line with this, in March 2011 the Company launched an initiative to develop a new subsea wellhead design, HGSS™, utilising its friction-grip technology in collaboration with key oil and gas operators and service companies. Royal Dutch Shell, Wintershall, Maersk, Tullow Oil, ENI, Oil States Industries Inc., TOTAL and the UK entity of the world's largest offshore drilling company have joined the initiative to date. The HGSS subsea wellhead design will include a combination of key features never before seen in a subsea wellhead which include being rated to 15,000 psi, 4,000,000 pounds of 'instant' casing lockdown capacity, annulus pressure monitoring and access for 'bleed off' capability to address sustained casing pressure ('SCP') issues which are recognised by the API as a serious industry problem, and rigid metal annular seal technology qualified to match the performance of premium casing. Design process is expected to be completed by mid 2013 calendar year, and will be followed by testing and engineering of a prototype.

To date, POS-GRIP wellhead systems have been used or selected to be used in over 250 oil and gas wells by international companies including Apache Energy Australia, BHP Billiton, BG International, Bowleven plc, BP, Brunei Shell Petroleum, Cairn Energy, Centrica, ConocoPhillips, Dana Petroleum, Dubai Petroleum, GDF SUEZ, Global Santa Fe, Maersk, Niko Resources, Petro-Canada Trinidad & Tobago, Red Sea Petroleum Operating Company, Repsol, RWE, Senergy Limited, Shell Egypt, StatoilHydro, Silverstone Energy, Talisman Energy, Tullow Oil, and Wintershall.