Proha Plc STOCK EXCHANGE RELEASE May 28, 2009 at 4 p.m. PROHA CHANGES THE RELEASE DATES OF ITS INTERIM REPORTS IN 2009 The new schedule for the interim reporting is as follows: 1-6 / 2009 on Thursday, August 6, 2009 1-9 / 2009 on Thursday, November 5, 2009 Proha Plc Ilari Koskelo CEO Proha in brief Proha is one of the most prominent providers of enterprise level project management services and software. We support customers executing projects and managing project business by providing a comprehensive set of tools and services with the best project management practices. In 2008, the net sales for the continuing operations of Proha Group were EUR 62.4 million (EUR 51.0 million in 2007). Currently Proha Group employs about 400 people worldwide. Proha is a Microsoft Gold Certified Partner. www.proha.com More information: PROHA PLC Ilari Koskelo, CEO, Tel. +358 20 4362 000 ilari.koskelo@proha.com Distribution: NASDAQ OMX Helsinki Major media