Our leadership team

The team guiding our way

Frank Calabria

Frank Calabria

Chief Executive Officer & Managing Director

Frank Calabria was appointed Chief Executive Officer and Managing Director of the Company in October 2016.  Frank is a member of the Company’s Health, Safety and Environment Committee.

Frank first joined Origin as Chief Financial Officer in November 2001 and was appointed Chief Executive Officer Energy Markets in March 2009. In that latter role, Frank was responsible for the integrated business within Australia including retailing and trading of natural gas, electricity and LPG, power generation and the solar and emerging business.

Frank is a Director of the Australian Energy Council and the Australian Petroleum Production & Exploration Association.  He is a former Chairman of Australian Energy Council and former Director of the Australian Energy Market Operator.

Prior to joining Origin, Frank held roles with Pioneer International Ltd, Hanson plc and Hutchison Telecommunications.

Frank has a Bachelor of Economics from Macquarie University and a Master of Business Administration (Executive) from the Australian Graduate School of Management.

Frank is also a Fellow of Chartered Accountants Australia and New Zealand and a Fellow of the Financial Services Institute of Australasia.


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Jon Briskin

Executive General Manager, Retail

Jon Briskin joined Origin in 2010 and was appointed Executive General Manager, Retail in December 2016.

Jon leads the teams responsible for energy sales, marketing, product development and service experience for Origin’s residential and SME customers.

Jon has held various roles at Origin, leading customer operations, service transformation and customer experience and prior to Origin worked as a management consultant.


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Greg Jarvis

Executive General Manager, Energy Supply and Operations

Greg Jarvis joined Origin in 2002 as Electricity Trading Manager and was appointed General Manager, Wholesale, Trading and Business Sales in February 2011.

Greg is responsible for Wholesale, Trading, Business Energy, Solar, Generation and LPG. Greg has over 20 years’ experience in the financial and energy markets.


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Kate Jordan

General Counsel & Executive General Manager, Company Secretariat, Risk & Governance

Kate Jordan joined Origin in March 2020 as General Counsel and Executive General Manager, Company Secretariat, Risk and Governance.

Kate leads the legal, company secretariat, risk and internal audit teams.

Prior to joining Origin, Kate was Deputy Chief Executive Partner at Clayton Utz, with responsibility for people and development. Kate has over 20 years' legal experience across a range of corporate transactions.


Andrew Clarke Group General Counsel and Company Secretary

Tony Lucas

Executive General Manager, Future Energy and Business Development

Tony Lucas joined Origin as Risk Analysis Manager in 2002 and was appointed as General Manager, Energy Risk Management in February 2011.

Tony leads the team responsible for Future Energy, Strategy and Technology, ensuring that Origin is well positioned to lead the transition into a low-carbon, technology-enabled world.

Tony began his career in the banking industry before moving into the energy sector.


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Sharon Ridgway

Executive General Manager, People and Culture

Sharon Ridgway joined Origin in 2009 and has been responsible for People and Culture since December 2016.

Sharon’s team provide strategic support to the business in key areas such as engagement, diversity, talent management and culture change.

Prior to Origin, Sharon developed a wide range of experience across operational and human resources roles whilst working in Dixons, a large European electrical retailer.


David Baldwin Chief Executive Officer LNG

Mark Schubert

Executive General Manager, Integrated Gas

Mark Schubert joined Origin in April 2015 and was appointed Executive General Manager, IG, in April, 2017.

He is responsible for Origin’s Integrated Gas business, which manages the Company’s portfolio of natural gas and LNG interests.

Mark has also held a number of senior positions during an 18-year career with Shell including having direct accountability for developing world’s first floating LNG facility - Prelude FLNG.


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Samantha Stevens

Executive General Manager, Corporate Affairs

Samantha Stevens joined Origin in March 2018 as Executive General Manager, Corporate Affairs. Samantha is responsible for Origin’s external affairs, government and public policy and employee communication functions and the Origin Energy Foundation.

Samantha has more than 20 years’ experience in corporate affairs, mainly in the resources, industrials and financial services sectors.

Prior to joining Origin, Samantha headed up Corporate Affairs for the global mining services company, Orica, and previously led the global media function and all Corporate Affairs M&A activity at global mining house, BHP.


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Lawrie Tremaine

Chief Financial Officer

Lawrie Tremaine joined Origin in June 2017 and holds the position of Chief Financial Officer.

Lawrie leads the teams responsible for all finance activities, corporate strategy, corporate development, procurement,  investor relations and HSE.

Lawrie has over 30 years’ experience in financial and commercial leadership, predominantly in the resource, oil and gas and minerals processing industries having previously worked at Woodside Petroleum and Alcoa.