SiteGround Capital

SiteGround Capital is a family office providing patient capital to deep tech, climate tech, and AI companies. It was founded by the co-founders of SiteGround, the Bulgaria-originated web hosting unicorn. The firm invests across early and later stages with no stated geographic focus, backing frontier companies globally. Its disclosed portfolio includes Anthropic, Fervo Energy, Mazama Energy, Sage Geosystems, Alice & Bob, ZwitterCo, Axelera AI, Universal Quantum, Boston Metal, pH7 Technologies, Verdant Robotics, Mainspring Energy, and others spanning clean energy, advanced materials, fusion, quantum computing, biotech, space, and AI. The firm emphasizes long-horizon, mission-driven investing and does not publicly disclose check sizes, fund size, or a formal application process.