We invest exclusively in what we know: software founders with unique domain expertise (usually from industry roles or past startups) transforming the backbone industries of the economy. We write initial checks of $500k to $1.5m, typically leading or co-leading pre-seed or formation-stage rounds. On average, Euclid partners with only 6 new companies per year, as we dedicate most of our time to our existing founders. Based in San Francisco, CA, we bring Silicon Valley networks and resources to standout founders across the US and Canada (with a core presence in and initial focus on those markets).