Notice of AGM

Press release

Synairgen plc

('Synairgen' or the 'Company')

Notice of Annual General Meeting

Southampton, UK - 9 May 2013: Synairgen plc (LSE: SNG), the respiratory drug discovery and development company with a particular focus on viral defence of the lungs, today announces that notice of its 2013 Annual General Meeting ("AGM") has been posted to shareholders and will shortly be available on the Company's website, www.synairgen.com. The AGM will be held at 12 noon on Monday 10 June 2013 at the offices of Fasken Martineau LLP, 17 Hanover Square, London W1S 1HU.

Ends

For further information, please contact:

Synairgen plc Tel: + 44 (0) 23 8051 2800

Richard Marsden, Chief Executive Officer

John Ward, Finance Director

FinnCap Tel: + 44 (0) 20 7220 0500

Geoff Nash, Christopher Raggett (Corporate Finance)

Stephen Norcross, Simon Starr (Corporate Broking)

Newgate Threadneedle Tel: + 44 (0) 20 7653 9850

Graham Herring

Josh Royston