Quarter Circle 3 Ventures is a family venture office backing companies and projects at the intersection of Physical AI, autonomy, environmental intelligence, and land stewardship. 

We support ventures that combine durable technology, scientific rigor, and long-term operating discipline. Our current focus includes autonomous systems, robotics, earth observation, AI infrastructure, and responsible land development.

Quarter Circle 3 Ventures is the founding venture platform behind TerraFirma Robotics, an autonomous environmental monitoring company building intelligent drone systems for high-resolution ground truth data.

Founders
Lew Eisaguirre: https://www.linkedin.com/in/lew-eisaguirre-73458740a/
Jake Eisaguirre: https://www.linkedin.com/in/jake-eisaguirre-2a4655224/
Joseph Eisaguirre: https://www.researchgate.net/profile/Joseph-Eisaguirre/

Quarter Circle 3 Ventures

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Quarter Circle 3 Ventures

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Teams

Offices

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