Plexus Holdings plc a United Kingdom-based company. The Company, along with its subsidiaries, is engaged in marketing a method of engineering for oil and gas field wellheads and connectors, named POS-GRIP, which involves deforming one tubular member against another within the elastic range to effect gripping and sealing. The Company derives revenue from the sale of its POS-GRIP technology and associated products, the rental of wellheads utilizing the POS-GRIP technology. For the oil and gas market POS-GRIP has been developed to employ a method of elastically deflecting an outer wellhead body onto an inner casing hanger or tubing hanger, locking them in place to support tubular weight, and activate seals. The Company�s subsidiaries include Plexus Ocean Systems Limited, Plexus HoldingsUSA, Inc., Plexus Ocean Systems US, LLC, Plexus Deepwater Technologies Limited, Plexus Ocean Systems International Limited and Plexus Ocean Systems (Malaysia) Sdn Bhd.