Our Story


Meet the board

Our board is made up of passionate, highly-skilled volunteers, who help ONE IN FIVE raise awareness and money to fund medical research, to find better treatments and cures for mental illnesses.

Gabrielle Sheehan


Gabrielle has been actively involved with ONE IN FIVE over the past seven years and became the Chairperson in 2015.

With over 20 years’ experience, she has held a number of senior marketing and management roles within leading multi-national companies including Bupa, ANZ, GSK Australia, Havas and Leo Burnett UK.

Gabrielle has actively contributed to not-for-profit and community organisations over the past 15 years and was a founding member of The Alfred Hospital's Life Support Committee.

She joined the ONE IN FIVE board in 2010 and has continued to champion the importance of clinical research into understanding mental illness to improve treatments and cures for those impacted.

Jayne Hart


Jayne is a transformational HR leader with experience in start-up, dynamic, complex and growing organisations. Jayne is a true strategist displaying strong business acumen and excellent project management skills. She is a trusted advisor to CEOs, Boards and Executive teams on business, organisation design, talent acquisition and leadership development.

Much of Jayne’s work has supported culture shifts within organisations such as BP Australia, Ageis, Melbourne and Olympic Parks and the Australian Red Cross.

A career highlight of Jayne’s was joining Melbourne 2006 Commonwealth Games Corporation where she led the build, delivery, and disassembly of the organisation’s 2,500 staff as Human Resources and Recruitment Manager.

Jayne is currently the Human Resources Director at Caulfield Grammar School, which is a co-educational day and boarding school with over 800 employees and 3000 students across five campuses – four in Australia and one in Nanjing, China.

Jayne is responsible for ONE IN FIVE’s people, culture and strategy.

Chloe Jeffers


With over a decade of experience in the events, marketing and media landscape, Chloe Jeffers joined the ONE IN FIVE board to lend a hand to delivering incredible events and marketing strategies that raise much-needed funds for mental health research. 

“ONE IN FIVE has the potential to make a huge impact on the mental health landscape here in Australia, and the world. By joining the board, I hope to make my contribution to this important part of life - something that I am personally touched by.”

Chloe is currently working to deliver experiential activations with a well-respected sponsorship agency, as well as raising a young son and supporting her husband in his business. A passionate sports fan, she can often be found at the MCG on the weekend with a glass of Pinot Noir in hand while cheering on her beloved Hawks. 

Chloe is responsible for ONE IN FIVE’s events delivery and also sits on the marketing committee.

Hayden Vowell


Hayden Vowell has worked across financial and strategic roles empowering businesses to grow. Hayden is a qualified chartered accountant and has been involved with ONE IN FIVE since 2017, and is passionate about ONE IN FIVE's cause and making a significant contribution to the financial acumen of the board. 

Hayden is the ONE IN FIVE treasurer and sits across all financial decisions. 

Kristen Altamura


Kristen Altamura is an experienced business development manager, and has worked with a plethora of charities before ONE IN FIVE, including the Hush Music Foundation, and Snobs Creek Estate Wine. 

Kristen is responsible for grants and funding. 

You too can make a difference, donate to ONE IN FIVE today.