Our team

Board

James Henderson

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With 30+ years in financial advisory services, James has been the founder and Chairman of Transocean Securities Pty Ltd since 1987. Specializing in corporate transactions and strategies, he's led teams in mergers, acquisitions, and capital raising globally. He also served as National Chairman at Sothertons Chartered Accountants. Currently, he sits on the boards of several listed and non-listed companies.
Ian Armstrong

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Ian has over 40 years of broad international business experience, with a focus on products/manufacturing, information technology and change management. He held a number of management and leadership roles before doing an MBA and starting a consulting career with Accenture for 22 years in a range of industries. Ian participates on a number of management boards and committees, including as chairman. Ian is an active investor in several start-ups, including medical devices, mining and finance. He also works in many volunteer roles, including at the Prostate Cancer Foundation.

Executives

David Colvin

CEO
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30+ years of MedTech commercial leadership, scaling high-performing sales organisations and bringing innovative medical technologies to market — having launched 75+ medical devices and led teams generating US$500M+ in annual revenue.
Alexandra Wilson

COO
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Alexandra joined OPUM in 2021 and has since played a central role in guiding the company through a pivotal phase of growth and transformation, including successfully navigating its receivership and repositioning it for commercial scale.
Before joining OPUM, Alex spent more than 10 years in advertising and marketing, leading global campaigns for brands such as Ford, Vodafone, Discovery Channel, and Eurosport, including high-profile projects like the Winter Olympics. Known for her strategic vision, communication, and leadership, she combines creative and commercial expertise to deliver results that drive long-term business success.
Paul Mallinson

CTO
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30+ years’ experience leading technology strategy, software engineering and product development across startups and established businesses. Proven track record building high-performing engineering teams, delivering innovative software products and translating complex technology into scalable commercial solutions.