Grok Ventures is the single-family office of Mike and Annie Cannon-Brookes, co-founder of Atlassian. See contact routes.
Grok Ventures is the single-family office of Mike and Annie Cannon-Brookes, co-founder of Atlassian, founded in 2008 and headquartered in Sydney, Australia. The firm has shifted its focus exclusively to climate-related investments since 2024, deploying permanent capital into technology-enabled opportunities that advance the global energy transition and decarbonization. It invests across the full capital stack from early-stage venture (Seed to Series A) to large infrastructure projects, targeting sectors including renewable energy, climate software, sustainable food, battery storage, and green finance globally. Typical check sizes range from $1M to $10M for early rounds, with a historical average of $11.8M and a maximum of $151.2M, and the firm often leads investment rounds while providing strategic support. Notable portfolio companies include Zoox (electric autonomous vehicles), SunCable (green hydrogen infrastructure), Vow (electric vehicle fleet), and Antora (battery storage). Grok distinguishes itself through its “patient, long-term capital” approach and a public view that decarbonization represents one of the greatest economic opportunities
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