About Us
Our Story
COS is Australia’s largest family-owned and operated workplace and education supplies business, proudly led by second-generation sisters Belinda and Amie Lyone as Co-CEOs. Founded in 1977 by the late Dominique Lyone, COS began as a small business with a vision for exceptional service and social responsibility.
Over the past 45 years, COS has grown from a small business to a national operation with over 700 staff and warehouses in every state and territory. Every day, we deliver thousands of products to workplaces and schools across Australia, helping to keep them healthy, safe, and productive.
As a proud family-owned business, COS is committed to giving back. Each year, we donate 1% of annual revenue to the Lyone Foundation, supporting local Australian charities focused on human welfare. Since 2013, we’ve contributed over $26 million to the Lyone Foundation and helped more than 150 life-changing charities.
Reaching Net Zero Operations and 100% Renewable Electricity across all facilities nationwide in 2024 was a significant milestone, with both maintained throughout 2025. Building on this progress, we continue to strengthen our approach to emissions reduction, expanding our measurement and decarbonisation efforts across Scope 3 emissions, including customer deliveries, staff travel, energy, waste and product production.
Family owned and operated
As a second-generation family business, COS is proud to be 100% Australian owned and operated. From supporting local suppliers to reinvesting in our local communities, we continue to grow with the same passion and innovative spirit our founder, Dominique Lyone, displayed when he started the COS over 45 years ago.