Microsaic Regulatory News (MSYS)

Microsaic Systems plc

("Microsaic" or the "Company")

EXERCISE OF SHARE OPTIONS

10 October 2014: Microsaic Systems plc (AIM: MSYS), the high technology company developing next generation mass spectrometry instruments, announces that following the exercise of employee share options on 7 October 2014, application has been made for 187,000 Ordinary Shares of 0.25 pence each in the Company to be admitted to AIM, with trading expected to commence on 16 October 2014.

Following the exercise of the options, Microsaic will have 63,253,376 Ordinary Shares in issue.

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About Microsaic Systems

Microsaic Systems plc is a high technology company developing and marketing next generation mass spectrometry (MS) instruments for the analysis of gaseous, liquid and solid samples. Microsaic has successfully miniaturised mass spectrometry by integrating the key MS components onto patented chip technologies called ionchip®, spraychip® and vac-chip™. Microsaic's MS products retain the speed and sensitivity of larger, conventional MS systems but are substantially smaller, lighter, consume less energy and have lower running costs. The Microsaic 4000 MiD is the world's smallest MS system.

Mass spectrometry is a 'gold-standard' analytical techniqueused across many industry sectors, including government, energy, utilities, pharmaceutical, diagnostics and healthcare, environmental, food and drink, security and defence, and industrial chemicals - a combined market of $3 billion in 2012.

Microsaic Systems was established in 2001 by a team including founders from Imperial College London, and was admitted to AIM in April 2011 under the symbol MSYS.

www.microsaic.com