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Leadership Team

Leadership Team

Julian Segal

Managing Director & CEO

Date of Appointment
1 July 2009

Julian joined Caltex from Incitec Pivot Limited, a leading global chemicals company, where he served as the Managing Director & CEO from June 2005 to May 2009. Prior to Incitec Pivot, Julian spent six years at Orica in a number of senior management positions, including Manager of Strategic Market Planning, General Manager – Australia/Asia Mining Services, and Senior Vice President – Marketing for Orica Mining Services.

Julian is a director of the Australian Institute of Petroleum Limited (appointed 1 July 2009). 

Julian holds a Bachelor of Science (Chemical Engineering) from the Israel Institute of Technology and a Master of Business Administration from the Macquarie Graduate School of Management.


Matthew Halliday

Chief Financial Officer

Matthew Halliday commenced as Chief Financial Officer in April 2019. He is responsible for finance, accounting, treasury, taxation, investor relations and procurement.

Prior to joining Caltex, Matthew enjoyed a successful career with Rio Tinto spanning 20 years, where he held senior finance and commercial roles across several divisions and geographies

Matthew is a Chartered Accountant and holds a Bachelor of Commerce from the University of Western Australia and an MBA from London Business School.


Viv Da Ros

Chief Information Officer

Viv was appointed to the position of CIO December 2016 and is responsible for leading the technology transformation program at Caltex.  

His 30 years of experience includes senior leadership positions in Australia, Asia and Europe, predominantly in the retail sector with the AS Watson Group, Tesco, KPMG and Dairy Farm International. 

Viv holds a Master of Business Administration from Manchester Business School, a Master of Project Management from The University of Technology, Sydney and is a graduate of the Australian Institute of Company Directors.

Lyndall Stoyles

Executive General Manager, People, Communications and Governance

Lyndall joined Caltex’s leadership team in October 2016 and was appointed Executive General Manager, People, Communications and Governance in March 2019. Lyndall manages Caltex’s legal, secretariat, internal audit, compliance, human resources and corporate affairs teams.

As General Counsel, she is responsible for providing legal advice to Caltex’s Board, CEO and broader leadership team. She is also Company Secretary to the Board. 

Prior to joining Caltex, Lyndall was Group General Counsel and Company Secretary for former logistics business Asciano and spent more than a decade with Clayton Utz advising on competition, commercial and corporate law issues in a broad range of industries.

Alan Stuart-Grant

Executive General Manager, Strategy and Corporate Development

Appointed as Executive General Manager - Strategy and Corporate Development in November 2017, Alan manages Caltex’s strategy, corporate development and M&A activities. 

Prior to joining Caltex, Alan held a senior position in the Oil & Gas department of Glencore plc, and prior to that spent more than a decade in private equity and investment banking, working in Sydney, London and Singapore.

Alan holds a Bachelor of Science (Business Administration) degree from the University of Bath, and is also a member of the Australian Institute of Company Directors.

Louise Warner

Executive General Manager Fuels & Infrastructure

Appointed as Caltex Australia’s Executive General Manager Fuels & Infrastructure in 2017, Louise Warner is responsible for ensuring competitive reliable fuel supply for our customers. 

Louise joined Caltex in 1999 and her career has spanned a range of roles within the company, starting as a process engineer at the Kurnell refinery. Louise gained commercial and trading experience through her secondment to Chevron UK. Recently, she was responsible for successfully establishing Caltex Australia’s first overseas operations, Ampol Singapore, which includes the company’s global trading and shipping function. 

Louise holds a Bachelor of Engineering (Chemical) from the University of New South Wales.

Joanne Taylor

Executive General Manager, Convenience Retail

Joanne Taylor was appointed Executive General Manager of Caltex’s Convenience Retail business effective March 2019. An executive leader with over 20 years’ experience in the retail, QSR, hospitality and manufacturing sectors, Joanne’s brings significant experience in operations, franchising, supply chain, communications and HR. 

Joanne joined the Caltex Executive Leadership team in 2016, responsible for Human Resources across the organisation. In this time, Joanne has been heavily involved in the transformation of Caltex’s retail network, including the specific challenge of accommodating the growth of the Convenience Retail workforce from 1000 store employees to over 5000 today. 

Prior to joining Caltex, Joanne spent 11 years at McDonald's Australia in operations, franchise, people and supply chain roles.