After working together for the last five years, Internetrix employees Daniel Rowan, Michael David and Jacinta Cali have bought the company from its founder Geoff McQueen.
The move to take ownership of the information technology company was made after Mr McQueen decided to stay in the United States, where he has been living in recent years to focus on other business interests.
The new ownership structure came into effect last month.
Mr Rowan's role has changed from general manager to managing director, Mr David is online performance director and Ms Cali is website projects director.
Mr Rowan said it was the start of an exciting new era for the Wollongong-based IT company, which provides a range of services to corporate and government clients in Australia and overseas that include website development, online performance analysis and management, digital strategy consulting and software licensing.
He acknowledged Mr McQueen's role in establishing Internetrix and taking the company to where it was today.
"Geoff gave us all our start at Internetrix and we are extremely grateful for the opportunities he has given us," Mr Rowan said.
"He has lived in San Francisco for the last few years and is focused on new business interests there, so the time was right for the three of us to take over Internetrix. We've been running the company for the last few years since Geoff moved to the US, so it is very much business as usual at Internetrix.
"We are totally focused on being a trusted and recognised digital supplier to organisations across Australia and the Asia-Pacific region, including expanding our office in Xiamen in China. We're also introducing innovations to the business, including Internetrix Research - a dedicated research arm which will help ensure that we stay at the cutting edge of IT development."
In 2007 Internetrix became only the second IT services company in Australia to become a Google Analytics Certified Partner.
It now employs 15 people.