# Eisen funding: rounds and investors > Eisen has raised $17M across 2 rounds since 2026. Investors include MissionOG, Index Ventures and First Round Capital. Every round with its source. Source: https://millionrounds.com/company/eisen (Millionrounds; every figure on the page links to its filing or article) United States · [Series A startup](https://millionrounds.com/companies) # Who invested in *Eisen* 2 rounds we have observed, with the 5 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 Fintech Regtech Raised 6 months ago Follow Eisen and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Feisen) Funding summary Updated 15 Nov 2026 **$17M** raised across 2 rounds since 2026, from 2 sources **$7.2M** Round **$10M** Series A - **Latest round:** Series A, $10M May 2026 - **Led by:** MissionOG - **Step-up i:** 1.4× - **Investors:** 5 (1 led) 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. 2027 **$7.2M** Round **$10M** Series A - **First round:** Round, $7.2M - **Biggest round:** $10M - **Between rounds:** 1 month ## The rounds - **May 2026** Series A **$10M** *5 new* [MissionOG](https://millionrounds.com/fund/missionog) Lead [Index Ventures](https://millionrounds.com/fund/index-ventures) [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Operator Partners](https://millionrounds.com/fund/operator-partners) [Cowboy Ventures](https://millionrounds.com/fund/cowboy-ventures) Reported by Ventureburn SEC filing: $7.2M sold - **Apr 2026** Round **$7.2M** No investor was named in the report. Reported by AlleyWatch SEC filing: $7.2M sold ## 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. **Round** 2026 **Series A** 2026 [MissionOG](https://millionrounds.com/fund/missionog) L [Index Ventures](https://millionrounds.com/fund/index-ventures) [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Operator Partners](https://millionrounds.com/fund/operator-partners) [Cowboy Ventures](https://millionrounds.com/fund/cowboy-ventures) ## Everyone who backed them [MissionOG](https://millionrounds.com/fund/missionog) VC firm **1** round, led 1 [Index Ventures](https://millionrounds.com/fund/index-ventures) VC firm **1** round [First Round Capital](https://millionrounds.com/fund/first-round-capital) VC firm **1** round [Operator Partners](https://millionrounds.com/fund/operator-partners) VC firm **1** round [Cowboy Ventures](https://millionrounds.com/fund/cowboy-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=eisen). ## Quick answers about Eisen ### Who invested in Eisen? Eisen's investors include MissionOG, Index Ventures, First Round Capital, Operator Partners and Cowboy Ventures. MissionOG led its latest round. ### How much has Eisen raised? Eisen has raised $17M across 2 rounds since 2026. ### When did Eisen last raise? Eisen's most recent round was a Series A of $10M in May 2026, led by MissionOG. ### What was Eisen's biggest round? Its most recent round, $10M in May 2026, is also its largest on record. ### Who backed Eisen first? Eisen's first round on record, in May 2026, was backed by MissionOG, Index Ventures and First Round Capital and 2 others. ### What stage is Eisen at? Eisen's latest named round is a Series A, in May 2026. ### Where is Eisen based? Eisen is based in the United States. ### Who led Eisen's rounds? MissionOG led the Series A in 2026. ## Companies like Eisen In the same sector, and raised in the last eighteen months. [**LangChain** $425M · Nov 2026](https://millionrounds.com/company/langchain)[**VuMedi** $142M · Nov 2026](https://millionrounds.com/company/vumedi)[**Betterness** $3.5M · Nov 2026](https://millionrounds.com/company/betterness)[**Axle** $12M · Nov 2026](https://millionrounds.com/company/axle)[**CrunchAtlas** $250K · Nov 2026](https://millionrounds.com/company/crunchatlas)[**Zus Health** $73M · Nov 2026](https://millionrounds.com/company/zus-health) ## 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