Director/PDMR Shareholding

11 June 2010

Immediate Release

First Derivatives plc

("First Derivatives" or the "Company")

Director Shareholding Notification

The Board of First Derivatives (AIM:FDP.L, ESM:GYQ.I) announces that it has today been notified that Mr. Michael O'Neill, a Non Executive Director, earlier today sold 80,000 ordinary shares in the Company to Paul Phillips and his family interests, a First Derivatives Pty Ltd Director, at a price of 300 pence per share. In addition Mr O'Neill has sold 20,000 ordinary shares in the Company to Rob Hodgkinson, a First Derivatives Pty Ltd Director, also at a price of 300 pence per share.

Following this transaction Mr O'Neill retains an interest in 840,000 ordinary shares representing approximately 5.38 per cent of the Company's Total Voting Rights.

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About First Derivatives

First Derivatives is a global provider of products and services to the financial services industry. With almost 15 years experience working with leading financial institutions, it continues to deliver technologically advanced, award winning products and services that anticipate and respond to the evolving needs of global capital markets.

First Derivatives currently employs over 450 people worldwide and counts many of the world's top investment banks, brokers and hedge funds as its customers. It has operations in London, New York, Stockholm, Shanghai, Singapore, Toronto, Sydney, Dublin, Newry and Hong Kong.

Delta is a comprehensive suite of high performance real-time trading, risk management and enterprise market data products. Flagship trading products include Delta Algo and Delta Stream which are used in high volume, low latency environments while Delta Replayand Backtest are the products of choice in the hunt for profitable strategies and post trade analysis.

For further information please visit www.firstderivatives.com