CEO Resignation

CEO Resignation
8 June 2026: ArborGen Holdings Limited (NZX: ARB) (ArborGen or the Company) announces that
Justin Birch has resigned as Chief Executive Officer after three years in the role. The Board has
commenced planning and will undertake a structured process to identify and appoint a new CEO.
Current VP of Product Development at ArborGen, Patrick Cumbie, has been appointed as interim
CEO pending the appointment of a permanent CEO. Patrick joined ArborGen in 2010 and is a
seasoned forestry executive, with more than 23 years’ industry experience.
ArborGen Chair, Dave Knott, said: “Justin played an important role strengthening our Brazil
operations and navigating the challenges of the US market, with a number of milestones now
achieved. The Board thanks him for his contributions and wishes him well for the future.
“Patrick has strong operational knowledge and a deep understanding of our business. The Board has
full confidence in his ability to lead the business as we continue to execute on our strategy, deliver
value for our customers and position the business for long-term success.”
ENDS
Authority for this announcement:
Dave Knott, Chair, ArborGen Holdings Limited
For more information, please contact:
Jackie Ellis, Ellis and Co e: jackie@ellisandco.co.nz, t: +64 27 246 2505

ArborGen
ArborGen is the leading supplier of advanced seedling genetics to the global commercial forestry
industry. Employing state-of-the-art technology, ArborGen is developing high-value products that
significantly improve the productivity of a given acre of land by enabling our customers to grow trees
that yield more wood per acre with greater consistency and quality in a shorter period of time. For
more information, please visit ArborGen’s website at www.arborgen.com