Executive Leadership Team
Appointed Managing Director of Sigma Pharmaceuticals Limited in August 2010. Mr Hooper has a broad range of experience in finance, commercial and operation matters primarily in the mining and pharmaceutical industries. Mr Hooper is a former Chief Financial Officer and Executive Director of PaperlinX Limited. From 2006 to 2008 Mr Hooper was the Chief Financial Officer and Chief Operating Officer for the Pharmacy and Consumer business for Symbion Health Limited. Prior to that he was Chief Financial Officer of Sigma from 2001 to 2006. Mr Hooper has not held a directorship of any other listed entity during the last three years.
Ms MacPherson was appointed Chief Financial Officer of Sigma Pharmaceuticals Limited in November 2016. Before joining Sigma, Ms MacPherson held CFO & Company Secretarial roles at UXC Limited (2015-2016), Boom Logistics Limited (2007-2014) and Australian Air Express (2003-2007). Prior to this she worked with KPMG for 13 years in their Edinburgh, Hong Kong and Melbourne offices. Ms MacPherson is a highly experienced executive with the combination of financial, commercial and operational acumen and a demonstrated ability to execute transformational change.
Mr Sells rejoined Sigma as CFO in August 2010 having previously worked for Sigma as Group Treasurer from 2001 to 2004. In 2016 he moved into the new role of Executive General Manager Strategy and Business Development where he has responsibility for strategy development activities, as well as the strategic and operational leadership for the CHS business. From September 2008 to August 2010 Mr Sells was CFO of Citadel Resources Group Ltd, and for a four-year period from 2004 to 2008 he was the CFO for Oxiana Limited. Prior to this, from 1991 to 2000, Mr Sells held various treasury and finance roles at Ashton Mining Limited.
Mr Dunne commenced with Sigma in July 2011. Prior to Sigma, he was involved with a number of restructuring roles with Private Equity including Interim Managing Director and Acting CEO. Mr Dunne has held a number of key senior management positions including General Manager of Supercenters, Strategy and Operations within the Coles Group and played an integral role in establishing ALDI in Australia as its first Regional Managing Director in 2000. Prior to this, Mr Dunne spent 17 years with Woolworths in a variety of senior management roles. Gary is a graduate of the Harvard Business School’s Advanced Management Programme, holds a Masters of Enterprise from Melbourne University and a Bachelor of Business from Monash University.
Mrs Pearson commenced with Sigma in August 2005, spending much of her time as Executive General Manager Human Resources. In May 2016 she was appointed Executive General Manager Business Transformation and is responsible for delivering complex cross-functional business transformation solutions from concept and design through to deployment and benefit measurement. Prior to joining Sigma, Mrs Pearson provided human resources advice to a variety of organisations within the private, public and government sectors. Mrs Pearson holds a Bachelor of Applied Science – Psychology (Honours) and a Master of Business Administration.
Ms Jeffs was appointed Executive General Manager Human Resources of Sigma Pharmaceuticals Limited in February 2017. Prior to joining Sigma, Ms Jeffs was Executive Director HR at Austin Health (2011-2017) and spent the previous 15 years with ANZ Banking Group Ltd in various human resource roles including with Retail and Commercial Banking, and leading ANZ’s Group Talent and Succession portfolio. Ms Jeffs brings to Sigma strong experience as a HR Executive Leader including aligning cultures to business strategy, building organisational capability and driving transformational change.
Mr Lawson commenced with Sigma in January 2016. Before joining Sigma, he was a Senior Associate at Minter Ellison for over six years, specialising in mergers and acquisitions, corporate, securities transactions and contracts. Mr Lawson has also worked for Slaughter and May in London and Freehills (now Herbert Smith Freehills) in Melbourne.