Leadership team

Tom Breen

Tom is an enterprise leader with deep knowledge and understanding of international agribusiness. He has held various leadership positions at Monsanto, Bayer, and Nutrien across a range of domains, including sales and marketing, technology development, supply chain operations, corporate strategy, and business transformation.

Chief Executive Officer

John Fernandes
John Fernandes

John has experience in strategy, finance, and continuous improvement. He has held roles at NZX, Goldman Sachs, JB Were, MediaWorks, Elevation Capital, and Spark.

Chief Financial Officer

George_Reeves
George Reeves

George has 30 years of experience as a leader in agriculture, animal and human health, and FMCG. Formerly, he was the Marketing Manager for Farm Animal at Elanco and Bayer Animal Health, and also worked at Bayer Consumer, Colgate, and SC Johnson in New Zealand, Australia, and the UK.

Head of Intellectual Assets and Strategic Partnerships

David Siegel
David Siegel, PhD

David has more than 15 years of international R&D experience in agriculture, human, and animal health. He formerly held various leadership roles at Bayer Animal Health and Boehringer Ingelheim in Germany and New Zealand, with a particular focus on drug discovery, product development, and marketed product defense.

Head of Research and Development

The Ruminant BioTech team

Bishal_Adhikari
Bishal Adhikari

Bishal brings over a decade of experience in pharmaceutical research and product development. He previously worked at Argenta and has a deep understanding of the innovation behind drug delivery and formulation.

Senior Formulation Scientist

Chris Bainbridge

Chris has four years of research experience in polymer chemistry at the University of Auckland, studying topics ranging from gel-based 4D printing to self-assembling nanoparticles. He brings expertise in design and development of polymer materials, as well as synthesis and characterization.

Formulation Scientist

Kirsty Bardoul
Kirsty Bardoul

Kirsty has experience in the start-up biotech industry, with a background in agritech R&D. Besides her research communication, data organisation, and analysis skills, she has a strong track record in leading and managing clinical trials and field studies.

Head of Research Studies

Caitlin_Burnett
Caitlin Burnett

Caitlin is an established registered Trans-Tasman Patent Attorney with broad commercial experience across numerous technologies and jurisdictions. She handles the complexities of leveraging intellectual property rights, including patents, trade marks and brand strategy, copyright, registered designs, and trade secrets, across both IP and common law.

Head of Intellectual Property

Portrait of Nirupama Buddha

Intellectual Property Associate

Abi Chase
Abigail Chase, BSc(Hons) BVMS PhD

Abi has a degree in Animal Science (1st Class, University of Edinburgh, 2002), a degree in Veterinary Medicine and Surgery (University of Glasgow, 2006) and a PhD in Veterinary Parasitology (University of Glasgow, 2011). She is an experienced production animal veterinarian with a strong focus on research. Abi has worked as a clinical veterinarian in both the UK and New Zealand. More recently she held the Livestock Performance Advisor role for Synlait Farms and following that position, Abi spent 8 years as the New Zealand Livestock Technical Product Manager for Boehringer Ingelheim, working with veterinarians and farmers on sustainable anthelmintic treatment for production animals on pasture. Abi joined Ruminant BioTech as the Veterinary Scientific Affairs Manager in mid-2024.

Technical Product Manager

Dave Colsell
David Colsell

David has over 30 years of experience in chemical product development and innovation. He is committed to technological progress and thrives on the challenge of taking new ideas from concept to commercialization, for which he has a proven track record.

Head of Formulation and Development

Regulatory Affairs Director

Meryem Drief, PhD

Meryem has a background in agronomy, field research, and data analysis, holding a PhD in Soil Science from Lincoln University. Prior to joining Ruminant BioTech, she served as a field research assistant at Lincoln Agritech. Since her arrival in 2023, she has contributed significantly to data analysis, database management, and reporting.

Science Analyst

Hossein Etemadi
Hossein Etemadi, PhD

Hossein has eight years of academic and industry experience in formulation and product development, as well as research and design of novel drug delivery platforms based on hydrogel polysaccharides.

Formulation Scientist

Verity_Groves
Verity Groves

Verity is an Associate Chartered Accountant who takes care of all our financial management, keeping the numbers and processes in order and providing support to the CFO.

Finance Manager – Grants and Projects

Portrait photo of Sophia Holdsworth

Research Manager

Wayne_Hu
Wayne Hu

Wayne has 16 years of experience in pharmaceutical GMP and R&D labs, with a focus on analytical chemistry. He is proficient in laboratory operations, including method development, quality control, regulatory compliance, and waste management.

Laboratory manager

Claire Hunt
Claire Hunt

Claire is a veterinarian who started her career in clinical work in the UK. After relocating to Australia 8 years ago, she has been involved in technical product support and business development for veterinary pharmaceutical companies across Australia and NZ.

AUS Business Development Manager

Portrait photo of Charlie Jackson
Charlie Jackson

Charlie grew up on a large sheep and beef farm in Te Akau. He holds a bachelor’s degree in Science, majoring in Medicinal Chemistry, from the University of Canterbury. Charlie works with our senior formulation scientists developing new protypes.

Junior Scientist

Portait Photo of Catherine Lee
Catherine Lee

Catherine has over 10 years of experience in analytical chemistry within the food and pharmaceutical industries. Throughout her career, she gained diverse experience working in both manufacturing and commercial laboratories across multiple countries, including Singapore, Malaysia, and New Zealand. She began her career as a technician and has since advanced to the role of Scientific Analyst, sharing her time between operational and technical role in a chemistry lab setting. With this rounded background, she brings innovation and creativity to the R&D team at Ruminant BioTech.

Senior Laboratory Analyst

Ashleigh Maguren

Ash has a background in farming as well as as strong background in research science and has hit the ground running with the Lactating Safety study and Dose Confirmation studies in full swing for daily sampling.
In her role as Research Technician, Ash is responsible for field data collection, sample management and operational improvements for the field office and systems, as well as taking care for Greenfeed machines. For her role at Ruminant BioTech, she is based in the field office in Te Rapa.

Research Technician

Stefanie_Maslek
Stephanie Maslek, PhD

Stefanie has over 10 years of experience in chemistry laboratories. She brings expertise in process development, material functionalization, and laboratory health and safety. Her previous work experience ranges from start-up companies to crown research institutes, with projects focused on improving the circular economy and environment.

Senior Scientist Bolus Chemistry

Portrait Photo of Llew McGivern, Ruminant Biotech
Llew McGivern

Llew has 25 years of experience in Supply Chain, across multiple industries. Llew holds qualifications in Supply Chain/ Operations Management as well as Molecular Biology. Llew has held leadership roles at Fletcher Building, Australian Pharmaceutical Industries, Flextronics International, and others in New Zealand, Australia and Asia.

Supply Chain Manager

Jun Park
Jun Park

Jun holds a bachelor’s degree in Science with a major in Chemistry and has two years of hands-on experience in a food testing lab, focusing on analytical chemistry.

Laboratory Technician

Tiffany Siegel
Tiffany Siegel, PhD

Tiffany is a scientist with over 15 years of experience in analytical development and mass spectrometry, with expertise in drug metabolism research and regulatory aspects. Her strong collaboration skills drive successful external partnerships, enhancing interdisciplinary teamwork and fostering innovation.

Market Access and External Collaborations Manager

Ian South

Ian has broad experience in business development, market entry, and fundraising across a variety of geographies. Previously, he was coordinating initiatives to bring enteric methane solutions to market in the United States and Canada.

Senior Business Development Associate

Maggie Sullivan
Maggie Sullivan

Maggie has 19 years of experience as a project / programme manager with broad experience across several business sectors, including pharmaceuticals, telecommunications, and government agencies.

Programme Manager

Mark Vickers
Mark Vickers

Mark has been a veterinarian and industry consultant for international and start-up companies in regulatory affairs for over 30 years. His areas of expertise include GMP manufacturing, product development, and the planning and conduct of GLP and GCP clinical trials for veterinary medicines. These trials were conducted for bolus solutions registered and sold in New Zealand and Australia.

Regulatory Manager

Jia_Wei
Jiaoying Wei

Jia joined the RBT team in 2021. She is an enthusiastic and skilled laboratory technician with experience in R&D work.

Laboratory Technician

Erica Yin
Erica Yin

Erica has over 20 years of experience in the pharmaceutical and agriculture fields, specialising in analytical method development, validation, and product specification. She has extensive knowledge of product characterisation, cGMP, and ICH guidelines. She holds a master’s degree in Pharmaceutical Science from the University of Auckland.

Head of Analytical Development