# Piston funding: rounds and investors > Piston has raised $25M across 3 rounds since 2025. Investors include Spark Capital, Pear VC and Bond. Every round with its source. Source: https://millionrounds.com/company/piston (Millionrounds; every figure on the page links to its filing or article) France · [Series A startup](https://millionrounds.com/companies) # Who invested in *Piston* 3 rounds we have observed, with the 7 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Raised 2 months ago Funding summary Updated 26 Oct 2026 **$25M** raised across 3 rounds since 2025, from 3 sources **$6.1M** Seed **$3.5M** Seed **$15M** Series A - **Latest round:** Series A, $15M Sept 2026 - **Step-up i:** 4.3× - **Investors:** 7 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2026 **$6.1M** Seed **$3.5M** Seed **$15M** Series A - **First round:** Seed, $6.1M - **Biggest round:** $15M - **Usual gap between rounds:** 9 months ## The rounds - **Sept 2026** Series A **$15M** *1 new* *3 returning* [Spark Capital](https://millionrounds.com/fund/spark-capital) [Pear VC](https://millionrounds.com/fund/pear-vc) [Bond](https://millionrounds.com/fund/bond) [FPV Ventures](https://millionrounds.com/fund/fpv-ventures) Source recorded SEC filing: $15M sold - **Mar 2026** Seed **$3.5M** *3 new* [Kima Ventures](https://millionrounds.com/fund/kima-ventures) [Daphni](https://millionrounds.com/fund/daphni) [Motier Ventures](https://millionrounds.com/fund/motier-ventures) Source recorded SEC filing: $15M sold - **Jun 2025** Seed **$6.1M** *3 new* [Spark Capital](https://millionrounds.com/fund/spark-capital) [Pear VC](https://millionrounds.com/fund/pear-vc) [Bond](https://millionrounds.com/fund/bond) Source recorded SEC filing: $7.4M sold, first sale May 2025 ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Seed** 2025 **Seed** 2026 **Series A** 2026 [Spark Capital](https://millionrounds.com/fund/spark-capital) [Pear VC](https://millionrounds.com/fund/pear-vc) [Bond](https://millionrounds.com/fund/bond) [Kima Ventures](https://millionrounds.com/fund/kima-ventures) [Daphni](https://millionrounds.com/fund/daphni) [Motier Ventures](https://millionrounds.com/fund/motier-ventures) [FPV Ventures](https://millionrounds.com/fund/fpv-ventures) ## Everyone who backed them [Spark Capital](https://millionrounds.com/fund/spark-capital) VC firm **2** rounds [Pear VC](https://millionrounds.com/fund/pear-vc) VC firm **2** rounds [Bond](https://millionrounds.com/fund/bond) Growth equity **2** rounds [Kima Ventures](https://millionrounds.com/fund/kima-ventures) VC firm **1** round [Daphni](https://millionrounds.com/fund/daphni) VC firm **1** round [Motier Ventures](https://millionrounds.com/fund/motier-ventures) Family office **1** round [FPV Ventures](https://millionrounds.com/fund/fpv-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=piston). ## Quick answers about Piston ### Who invested in Piston? Piston's investors include Spark Capital, Pear VC, Bond, Kima Ventures and Daphni, and 2 more on record. ### How much has Piston raised? Piston has raised $25M across 3 rounds since 2025. ### When did Piston last raise? Piston's most recent round was a Series A of $15M in Sept 2026. ### What was Piston's biggest round? Its most recent round, $15M in Sept 2026, is also its largest on record. ### Who backed Piston first? Piston's first round on record, in Jun 2025, was backed by Spark Capital, Pear VC and Bond. ### What stage is Piston at? Piston's latest named round is a Series A, in Sept 2026. ### Where is Piston based? Piston is based in France. ## Companies like Piston In the same sector, and raised in the last eighteen months. [**Pigment** $483M · Oct 2026](https://millionrounds.com/company/pigment)[**Wiremind** $39M · Oct 2026](https://millionrounds.com/company/wiremind)[**Verso** $6.0M · Oct 2026](https://millionrounds.com/company/verso)[**Inbolt** $29M · Oct 2026](https://millionrounds.com/company/inbolt)[**Wealthcome** $25M · Sept 2026](https://millionrounds.com/company/wealthcome)[**OPiO** $4.6M · Sept 2026](https://millionrounds.com/company/opio) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app