Our executive team

Jason Trethowan commenced as CEO of headspace, the National Youth Mental Health Foundation in January 2017. Since then, he has overseen an expansion of the headspace network of digital services for young people, school-based programs, and an ongoing commitment to over 160 headspace centres nationally. With strengthened community and government support for headspace, Jason understands the importance of embedding and integrating national models of service delivery in communities to ensure all young people across Australia can benefit from headspace services in the areas of mental health, general health, work and study, and alcohol and other drugs.

Prior to working at headspace, Jason held previous CEO positions from 2007 which included being CEO of Western Victoria Primary Health Network.

Jason was a Board Director of Barwon Health from 1 July 2017 to 30 June 2023.

He is a Board Director of Gforce Employment Solutions, and has achieved qualifications in Health Information Management, Health Informatics, and master’s in business administration.

Jason has been a Director on the headspace Board since March 2024. 

Julia is responsible for the leadership and management of services delivered directly by headspace National Youth Mental Health Foundation nationally, including:

• headspace Digital Mental Health Programs that includes the national eheadspace online and telephone counselling service, Victorian Regional Telephone line, and headspace connect counselling services;
• headspace Schools and Community programs, including suicide prevention programs such as the headspace Mental Health in Education programs, University Support and Training, the Be You initiative nationally where headspace is the service delivery partner providing support to primary and secondary schools nationally; and the Community Collaboratives in NSW;
• headspace digital Work and Study, headspace Career Mentoring services, and Individual Placement Support (IPS) program management for the headspace centre network;
• and the headspace centre network support services, including the headspace Model Integrity Framework and trademark licensing and supporting the establishment of new headspace services.

Julia has over 30 years’ experience in the Australian health sector, predominately in the private health sector. With a background in business, Julia has significant commercial experience in leading complex assignments including major health mergers and acquisitions; national health funding portfolios for private hospital groups; organisational wide strategic planning; communications and stakeholder management.

Julia has worked at headspace since 2010 and has seen the organisation expand from 30 headspace centres to the current network of over 150 funded headspace services. She is a passionate advocate for establishing sustainable services and improving access to high quality health care for all Australians.

Vikki Ryall is a youth and mental health expert offering nearly three decades of experience in leading major changes to improve service delivery and evidence-based practices within the sector.

Deeply passionate about youth mental health, Vikki has extensive clinical experience with young people who are difficult to engage, high risk, and present with complex needs. Vikki is an accredited mental health social worker trained in a range of therapies and has continued clinical work with young people who present with a variety of mental health challenges right throughout her career. 

Bringing extensive experience in executive clinical leadership, Vikki has published articles about high risk young people, presented at many conferences both in Australia in internationally and is looked upon as one of Australia’s leading mental health thought leaders. 

Joining headspace National Youth Mental Health Foundation in 2009, Vikki is proud of the varied projects she has contributed to.

Vikki is a strong advocate and supporter of LGBTIQA+ inclusion, youth participation and family inclusion.

In her current role, Vikki oversees clinical practice, governance, participation and education and training for headspace at a national level. 

Anna Hall is the Chief Information Officer at headspace, ensuring that headspace stays at the forefront of delivering digitally enabled youth mental health services. The role is central to providing strategic leadership for the organisation’s digital and technology services which positions headspace as a leading system innovator aligned with the future direction of the organisation.

The Digital and Technology Services domain covers day to day operations, data and reporting services as well as technology and digital innovation and service enablement.

Commercially astute IT Executive with over 20 years of expertise leading organisations through significant technology change. Highly accomplished in corporate governance, strategy and innovation, including designing and deploying new products/technologies into large scale organisations.

Anna joined headspace in April 2018 after spending 4 years as a Principal Consultant pioneering the strategic direction, as related to current and future state business / service delivery requirements for high-profile clients within complex organisations.  This included enterprise architecture and business strategy consulting to Victorian and NSW Government as well as the health, finance and telecommunications sector. Prior to that Anna led large teams of up to 200+ highly specialised Information technology professionals in several General Manager Positions within Telstra.

A people-orientated leader and mentor with a keen interest in empowering employees to reach their full potential and become future industry leaders. Anna has a passion for rural Victoria, and runs a successful farm in Gippsland.

Mark Eaton commenced as Chief Financial Officer at headspace in November 2022.

Mark is a Chartered Accountant registered with both Chartered Accountants Australia and New Zealand and CPA Australia and has more than 30 years’ experience partnering with listed and unlisted health, financial services, and service organisations in the for-profit and not-for-profit sectors.

Mark has experience in leading organisations through strategic change initiatives, innovative process improvement and performance improvement initiatives. Mark enjoys working collaboratively across a range of functions and services at a national level. Mark has experience in leading high performing multidisciplinary teams in complex multi-site environments.

Prior to commencing with headspace, Mark held several CFO and Senior finance roles in listed and unlisted Private Hospital Companies, the Medical Research sector and Service and Educational organisations in Australia and abroad.

Daniel Knapp is a dedicated leader at headspace National Youth Mental Health Foundation, focused on improving mental health outcomes for all young people, particularly Aboriginal and Torres Strait Islander youth.

With a background in youth centred mental health services and community development, Daniel advocates for culturally responsive, holistic care that supports self-determination. His work centres on fostering environments where young people and their communities feel empowered, and their voices are heard. Through collaborative leadership, Daniel builds strong partnerships with communities and stakeholders to drive service innovation.

Passionate about early intervention and social and emotional wellbeing, he plays a key role in ensuring headspace delivers accessible, culturally safe, and responsive mental health support nationwide.

Kellie joined headspace in March 2024, and brings more than 25 years' experience leading marketing, brand and communication functions across multiple categories, including health care, energy, financial services, media and broadcasting and sports and entertainment. Additionally, she brings more than a decade of leadership experience working with multinational non-profits.

Kellie is passionate about mental health and health care and has dedicated almost ten years serving on the Boards of global charity, Movember, and national charity PANDA – Perinatal Anxiety & Depression Australia.

Kellie is a member and graduate of the Australian Institute of Company Directors.

In her role with headspace, Kellie oversees brand, marketing, internal and external communication, media and PR, content, corporate partnerships and fundraising, digital marketing, social media and community engagement.

Nicole commenced as Executive Director of People & Culture at headspace in October 2024. 

Nicole is a senior people and culture executive with over 20 years’ experience in corporate and public sector environments, including public health, higher education, and the financial services sector. She has extensive experience leading teams across organisational development, diversity and inclusion, recruitment, employee relations and people and culture shared services. Nicole holds a Bachelor of Laws and a Bachelor of Arts and spent her early career practicing in employment and industrial relations law.

Nicole has led the design, delivery and implementation of whole-of-organisation strategies and programs of work to improve workplace culture and engagement, gender, diversity, and inclusion and evolve Aboriginal and Torres Strait Islander employment.  Nicole has also led programs of work to support leadership and career development, build organisational capability and drive process and service excellence to better enable employees and managers. 

Nicole is a strong and values-based leader. She is passionate about engaging people and creating safe, vibrant, and inclusive environments for all people.