(Telecompaper) Semiconductor and software design company ARM Holdings' chief executive officer Warren East has decided to retire from the company, effective 1 July, after nearly twelve years as CEO and nineteen years at the company. Simon Segars, currently ARM president will become the company's new CEO. East joined ARM in 1994 to establish the company's consulting business and later became VP of business operations. Within three years he was appointed to the board as chief operating officer. East became ARM'S CEO in October 2001. Segars, 45, joined the board in January 2005 and has operational responsibility for the company's IP divisions. He has been with ARM since 1991 and has held several executive roles including EVP Engineering, when he worked on many of the early ARM processors, as well as EVP Worldwide Sales and EVP Business Development. He has international leadership experience having held senior positions for ARM in both the UK and the US.