Sphere Medical Limited is a wholly owned subsidiary of Sphere Medical Holding PLC. Major shareholders of the parent company include the following:

• Artemis Investment Management Limited
• Edwards Lifesciences AG 
• Fritas A/S
• FIL (as discretionary manager)
• Herald Ventures
• Hotbed Limited
• Oakes, Lyman and Company
• Oxford Capital Partners
• Quest for Growth NV
• Sagentia Group
• Schroders Investment Management (as discretionary manager)
• Siemens Technology Accelerator
• Sorin Group
• Springhill Management Limited 

As at 30 June 2010, Sphere Medical Holding PLC had an issued share capital consisting of 16,492,614 shares (14,662,394 Ordinary Shares of £0.01 each and 1,830,220 Preferred Ordinary Shares of £0.01 each). 

At the same date there were share options outstanding under the Company's employee share plans over a further 1,752,397 Ordinary Shares and warrants over 1,020,977 Ordinary Shares.