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Board of Directors


Stuart Chambers

Stuart Chambers - Chairman

Stuart Chambers joined the Board as Chairman designate on 27 January 2014 and became Chairman on 1 March 2014. He brings a strong track record and a wealth of Board and executive experience both in the UK and globally. Up to 2009, he was the Group Chief Executive of Nippon Sheet Glass Group, which acquired Pilkington plc in 2006, where he was Chief Executive. Prior to the glass industry, Stuart held a number of senior positions at Mars, Inc., having previously spent ten years in several European roles at Royal Dutch Shell plc.

PDFChairman appointment (PDF)


Simon Segars

Simon Segars - Chief Executive Officer

Simon Segars joined the Board in January 2005 and was appointed Chief Executive Officer on 1 July 2013. His previous roles include President, leading the IP divisions and representing them on the Board, EVP and General Manager of the Processor and Physical IP Divisions and prior to that, EVP, Engineering, EVP, Worldwide Sales and EVP, Business Development. He joined ARM in early 1991 and worked on many of the early ARM CPU products. He led the development of the ARM7TM and ARM9TM Thumb® families. He holds a number of patents in the field of embedded CPU architectures.

PDFCEO contract (PDF)


Tim Score

Tim Score - Chief Financial Officer

Tim Score joined ARM as Chief Financial Officer and director in March 2002. Before joining ARM, he was Finance Director of Rebus Group Limited. He was previously Group Finance Director of William Baird plc, Group Controller at LucasVarity plc and Group Financial Controller at BTR plc.

PDFDirector's contract (PDF)


Mike Muller

Mike Muller - Chief Technology Officer

Mike Muller was one of the founders of ARM. Before joining the Group, he was responsible for hardware strategy and the development of portable products at Acorn Computers. He was previously at Orbis Computers. At ARM he was VP, Marketing from 1992 to 1996 and EVP, Business Development until October 2000 when he was appointed Chief Technology Officer. In October 2001, he was appointed to the Board.

PDFDirector's contract (PDF)


Andy Green

Andy Green - Independent Non-Executive Director

Andy Green joined the Board in February 2011. He was CEO of Logica plc from 2008 to 2012. He is a former CEO of BT Global Services and a former CEO of Group Strategy and Operations at BT plc and was CEO of BT Openworld. He is Chair of e-Skills UK (the UK Sector Skills Council for Business and Information Technology), is on the Board and the President's Committee of the CBI and is a Companion of the Chartered Management Institute.

PDFNED appointment (PDF)


Biography Photo

Larry Hirst - Independent Non-Executive Director

Larry Hirst joined the Board in January 2011. He is the former Chairman of IBM Europe, Middle East and Africa. He retired from IBM in 2010 having previously held a wide range of senior positions since joining the company in 1977. He currently chairs the Imperial College Digital Cities Exchange. He is also an Ambassador to Monitise plc and on the International Advisory Board for British Airways. Former roles include being a UK Business Ambassador, a Commissioner for the Commission for Employment and Skills, and Chair of e-skills UK (the UK Sector Skills Council for Business and Information Technology). He was awarded a CBE in 2006.

PDFNED appointment (PDF)


Biography Photo

John Liu - Independent Non-Executive Director

Dr. John Liu joined the Board and the ARM Asia Advisory Group on 1 December 2014. He is an independent non-executive director of Digital China Holdings Limited and a member of the Board of Trustees of Beijing Normal University Education Fund. In addition he is Chief Business Officer of Qihoo 360 Technology Co. Ltd. Former roles include senior executive positions in various companies including as Corporate Vice President and Head of Greater China for Google Inc.; China CEO of SK Telecom Co., Ltd in Korea and Country Director of Greater China of Singapore Telecommunications Limited.

PDFNED appointment (PDF)


Biography Photo

Kathleen O'Donovan - Senior Independent Non-Executive Director

Kathleen O'Donovan joined the Board in December 2006. Previously she was a non-executive director and Chairman of the Audit Committees of the Court of the Bank of England, Great Portland Estates plc, EMI Group plc and Prudential plc and a non-executive director of O2 plc. Prior to that, she was Chief Financial Officer of BTR plc and Invensys plc, and before that she was a Partner at Ernst & Young.

PDFNED appointment (PDF)


Janice Roberts

Janice Roberts - Independent Non-Executive Director

Janice Roberts joined the Board in January 2011. She is a Venture Adviser at Mayfield Fund having been a Managing Director from 2000-2013. Mayfield is a Silicon Valley-based venture capital firm with approximately $3 billion under management, where her focus is on the mobile, wireless, communications and consumer technology industries. Prior to that, she held various executive positions at 3Com Corporation, including President Palm Computing, President 3Com Ventures and Senior Vice President, Business Development and Global Marketing. She is a director of several private technology companies in the US.

PDFNED appointment (PDF)