Retool
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Investors
Founders
About
Retool is a developer platform for building internal tools, founded in 2017 by David Hsu. The company went through Y Combinator’s Winter 2017 batch and has grown to serve tens of thousands of companies 1. Retool has taken a distinctive approach to fundraising, raising small rounds at lower valuations to minimize dilution and preserve upside for employees 2.
Funding History
| Date | Round | Amount | Lead | Co-investors |
|---|---|---|---|---|
| Aug 2017 | Seed | $1M | Y Combinator | Daniel Gross, John Collison, Nat Friedman 3 |
| Oct 2019 | Series A | $25M | Sequoia Capital | — 4 |
| Oct 2020 | Series B | $50M | Sequoia Capital | — 1 |
| Dec 2021 | Series C | $20M | — | Sequoia Capital, Elad Gil, Nat Friedman, Daniel Gross, John Collison, Patrick Collison 5 |
| Jul 2022 | Series C2 | $45M | Sequoia Capital | John Collison, Patrick Collison, Nat Friedman, Elad Gil, Daniel Gross, Caryn Marooney 2 |
Total raised: approximately $141M across 5 rounds 3. Valued at $3.2B as of Series C2 2.
What Investors Say
No verified investor quotes found at this time.
What Founders Say
No independently sourced founder testimonials found.
Sources
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Retool Blog, “Retool raises $50M led by Sequoia,” October 2020, accessed March 2026. https://retool.com/blog/retool-raises-50-million-led-by-sequoia↩↩
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Retool Blog, “Retool’s Series C2 fundraise,” July 2022, accessed March 2026. https://retool.com/blog/series-c2↩↩↩
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Clay, “How Much Did Retool Raise? Funding & Key Investors,” accessed March 2026. https://www.clay.com/dossier/retool-funding↩↩
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Crunchbase, “Series A - Retool,” accessed March 2026. https://www.crunchbase.com/funding_round/retool-series-a–2e76492↩
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Retool Newsroom, “Series C: Raising less money at lower valuations,” December 2021, accessed March 2026. https://retool.com/newsroom/series-c↩