Grok Ventures

Grok Ventures is the private investment vehicle of Mike Cannon-Brookes, co-founder and CEO of Atlassian, structured as a family office and based in Surry Hills, Sydney, Australia. Founded in 2016, the firm has exclusively focused on climate-related investments, backing technology-enabled climate companies and infrastructure across the full capital stack — from early-stage climate tech startups through to major renewable energy infrastructure. Its investment thesis centres on decarbonisation as a major economic opportunity, and it backs founders with patient, long-term capital, preferring early involvement while retaining flexibility to participate through to late-stage rounds. Portfolio companies include Brighte, SunDrive, Antora Energy, Goterra, and Sun Cable (acquired). Grok also provides structured, non-dilutive funding solutions alongside equity. Reported AUM is approximately $1.6 billion, with typical check sizes of $10–50 million. The firm invests globally, with a concentration in Australia, the United States, and Singapore.