Jason Blumberg, co-founder and Managing Director of Chicago-based Earth Foundry. See sector focus and contact routes.
Jason Blumberg, co-founder and Managing Director of Chicago-based Earth Foundry, invests in early-stage climate technology startups from seed through Series B, typically writing first checks of $750,000 to $1 million as a lead investor [1][2]. His firm targets hardware, software, materials, and services in energy, mobility, water, waste, agriculture, and infrastructure, with a distinctive thesis focused on capital-intensive "hard-tech" ventures that take longer to develop than software solutions [2][6]. Notable portfolio companies include energy storage and grid innovators NanoGraf, Span, and Dragos, alongside Canadian ventures e-Zinc, Polystyvert, and Nxlite [6][7].
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