ADF Board

As the primary governance body of Australian Dairy Farmers (ADF), the Board’s principle responsibility is to oversee, approve and monitor the strategic direction of the organisation.

Seeking strategy direction from the National Council – ADF’s state representative body – and ADF’s Policy Advisory Groups (PAGs), the Board ensures activities undertaken by ADF meet the shared national priorities of dairy farmers across Australia, and the views of key stakeholder groups are taken into account.

The ADF Board plays a crucial role in electing the President and National Council members, and selecting the ADF Independent Director and the Chair of each PAG. The Board is also responsible for monitoring the integrity of financial reporting, overseeing risk management and legal compliance, and providing guardianship of corporate values.

Rick Gladigau


Rick Gladigau grew up on his family’s dairy farm and was employed there as a farmhand upon leaving school. Rick has broad experience, having worked on a potato farm and as a dairy share farmer, and trained in Canada as part of an agricultural exchange program before returning to manage his family’s dairy farm.

He was a ward representative for Australian Co-operative Foods and a member of the Dairy Farmers Milk Co-operative (DFMC) Board of Directors from 2013 to 2016. Rick was a Board Member of the South Australian Dairyfarmers’ Association (SADA) from 2007 to 2021, serving as Treasurer for the last four years. 

Rick is passionate about the dairy industry, which has helped him gain experience in industry leadership, governance, and negotiation.

Brian Tessmann


Brian Tessmann is a Queensland dairy farmer from the South Burnett area. Jointly running the family operation with his brother, the farm has been in the Tessmann family for four generations and milks 150 cows.

Brian has a long history with the Queensland Dairyfarmers Organisation (QDO). Since being appointed as District Secretary in 1995, he was then elected to the QDO Board and State Council in 2000 and in 2003 became the Vice President.

Brian has been President of QDO since 2009, as well as a Director on the ADF Board and National Council. Over this period, Brian has also held various roles at both state and national levels.

Brian is passionate about the northern dairy industry and hopes to drive improved opportunities for farmers in the region. Brian is married to Dixie with two sons, Carl and Eric.

Andreas Clark

Independent Director

Andreas is an experienced non-executive director and senior executive having recently served as Chief Executive Officer of Wine Australia from 2014 to 2021. Prior to joining Wine Australia, Andreas was a diplomat with the Department of Foreign Affairs and Trade in Canberra and Brunei and has also worked as a lawyer in private practice and in-house with an ASX-listed company.


Andreas holds non-executive director roles with CCW Cooperative Ltd, Bremerton Vintners Pty Ltd, Hampstead Health Pty Ltd, Pembroke School Inc and Operation Flinders Inc.


He holds a Master of Laws from the Australian National University and Bachelor of Economics and Bachelor of Laws (First Class Honours) from Flinders University and is admitted to practice in South Australia. He has also completed a Graduate Diploma in Applied Finance and Investment from the Securities Institute of Australia and the Authentic Leadership Program at Harvard University. He is also a Graduate of the AICD Company Directors Course.

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