What is Mark Shuttleworth's net worth?

As of my last knowledge update in October 2021, Mark Shuttleworth's net worth was estimated to be around $500 million. He is best known as the founder of Canonical Ltd., the company behind the Ubuntu operating system, and has made significant investments in various technology ventures. However, net worth can fluctuate over time due to changes in investments and market conditions, so for the most current figure, it's best to consult recent financial news or resources.