Bradley A. Feld, Co-Founder & Managing Director at Foundry Group, Boulder, CO — Brad Feld, co-founder of Foundry Group. See sector focus and contact routes.
Brad Feld, co-founder of Foundry Group, is an early-stage investor who focuses on US-based technology companies, primarily in software infrastructure, fintech, DevTools, deeptech, and emerging sectors like aerospace and climate technology, investing $5 million to $15 million per company over its lifetime [1][5][6]. He pioneered a **thematic investment thesis**, defining long-term themes (20–30 years) where significant companies can be built, and emphasizes founder obsession and product affinity as key partnership criteria [1][2][3]. His notable portfolio includes early investments in **Fitbit** (IPO, acquired by Google), **Zynga**, **MakerBot**, **SendGrid** (acquired by Twilio), and **Gnip** (acquired by Twitter) [2][4][7][9].
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