The AFR Rich List of May 2025 put Mike Cannon-Brookes's wealth at A$12.18 billion, counted on his own. The 2024 list gave A$24.38 billion, a joint figure with Annie Cannon-Brookes, from whom he separated in July 2023.
Almost all of it comes from Atlassian, the software company he co-founded with Scott Farquhar in Sydney in 2002. They began on about A$10,000 of credit-card debt. Their first big product, the bug tracker Jira, was sold online with no sales team.
Atlassian stayed bootstrapped until $60 million from Accel Partners in July 2010. It listed on Nasdaq on 10 December 2015 under the ticker TEAM, at a market value of about $4.37 billion.
The company later bought Trello for $425 million in 2017 and OpsGenie for $295 million in 2018. Farquhar stepped down as co-CEO in August 2024, and Cannon-Brookes has led Atlassian alone since. In March 2026 the company cut about 10% of its workforce.