Microsaic Regulatory News (MSYS)

Microsaic Systems plc

("Microsaic" or the "Company")

EXERCISE OF SHARE OPTIONS

6 January 2015: Microsaic Systems plc (AIM: MSYS), the high technology company developing next generation mass spectrometry instruments, announces that following the exercise of employee share options by an ex-employee on 5 January 2015, application has been made for 132,000 Ordinary Shares of 0.25 pence each in the Company to be admitted to AIM, with trading expected to commence on 9 January 2015.

Following the exercise of the options, Microsaic will have 63,385,376 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 into a desktop instrument 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 pharmaceutical, diagnostics and healthcare, government, energy, utilities, environmental, food and drink, security and defence, and industrial chemicals - a combined market of $3.9 billion in 2013. Microsaic aims to introduce compact, deployable MS products, based on its core technology, into a series of these target markets.

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