# Ribbon funding: rounds and investors > Ribbon has raised $271M across 8 rounds since 2011. Investors include Greylock, Bain Capital Ventures and NFX. Every round with its source. Source: https://millionrounds.com/company/ribbon (Millionrounds; every figure on the page links to its filing or article) United States · [Seed startup](https://millionrounds.com/companies) # Who invested in *Ribbon* 8 rounds we have observed, with the 23 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 Proptech Real Estate Funding summary Updated 26 Oct 2026 **$271M** raised across 8 rounds since 2011, from 8 sources **$120K** Seed **$1.6M** Seed **$225M** Series A **$30M** Series B **$2.9M** Seed **$2.7M** Pre-seed **$400K** Grant **$8.2M** Seed - **Latest round:** Seed, $8.2M Mar 2025 - **Biggest round:** $225M Series A · Oct 2018 - **Step-up i:** 20.5× - **Investors:** 23 (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. 2011 2013 2015 2017 2019 2021 2023 2025 **$120K** Seed **$1.6M** Seed **$225M** Series A **$30M** Series B **$2.9M** Seed **$2.7M** Pre-seed **$400K** Grant **$8.2M** Seed - **First round:** Seed, $120K - **Biggest round:** $225M - **Usual gap between rounds:** 16 months ## The rounds - **Mar 2025** Seed **$8.2M** *2 new* [Social Leverage](https://millionrounds.com/fund/social-leverage) [Radical Ventures](https://millionrounds.com/fund/radical-ventures) Source recorded - **Sept 2024** Grant **$400K** *3 new* [Precursor Ventures](https://millionrounds.com/fund/precursor-ventures) [Kapor Capital](https://millionrounds.com/fund/kapor-capital) [Susa Ventures](https://millionrounds.com/fund/susa-ventures) Source recorded - **Feb 2024** Pre-seed **$2.7M** *1 new* [One Way Ventures](https://millionrounds.com/fund/one-way-ventures) Source recorded - **Oct 2022** Seed **$2.9M** *3 new* [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) [MMC Ventures](https://millionrounds.com/fund/mmc-ventures) [Concept Ventures](https://millionrounds.com/fund/concept-ventures) Source recorded - **Oct 2019** Series B **$30M** *1 new* *4 returning* [Greylock](https://millionrounds.com/fund/greylock-partners) Lead [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) [NFX](https://millionrounds.com/fund/nfx) [Nyca Partners](https://millionrounds.com/fund/nyca-partners) [Thomvest Ventures](https://millionrounds.com/fund/thomvest) Reported by FinSMEs SEC filing: $12M sold, first sale Feb 2020 - **Oct 2018** Series A **$225M** *4 new* [Greylock](https://millionrounds.com/fund/greylock-partners) [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) [NFX](https://millionrounds.com/fund/nfx) [Nyca Partners](https://millionrounds.com/fund/nyca-partners) Reported by TechCrunch - **Feb 2013** Seed **$1.6M** *6 new* [Draper Associates](https://millionrounds.com/fund/draper-associates) [Siemer Ventures](https://millionrounds.com/fund/siemer-ventures) [MicroVentures](https://millionrounds.com/fund/microventures) [Emil Michael](https://millionrounds.com/fund/emil-michael) [Naguib Sawiris](https://millionrounds.com/fund/naguib-sawiris) Winston Ibrahim Reported by techcrunch.com - **Sept 2011** Seed **$120K** *3 new* [InterWest Partners](https://millionrounds.com/fund/interwest-partners) [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) [AngelPad](https://millionrounds.com/fund/angelpad) Reported by techcrunch.com ## 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** 2011 **Seed** 2013 **Series A** 2018 **Series B** 2019 **Seed** 2022 **Pre-seed** 2024 **Grant** 2024 **Seed** 2025 [Greylock](https://millionrounds.com/fund/greylock-partners) L [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) [NFX](https://millionrounds.com/fund/nfx) [Nyca Partners](https://millionrounds.com/fund/nyca-partners) [Draper Associates](https://millionrounds.com/fund/draper-associates) [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) [InterWest Partners](https://millionrounds.com/fund/interwest-partners) [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) [Precursor Ventures](https://millionrounds.com/fund/precursor-ventures) [Kapor Capital](https://millionrounds.com/fund/kapor-capital) ## Everyone who backed them [Greylock](https://millionrounds.com/fund/greylock-partners) VC firm **2** rounds, led 1 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) VC firm **2** rounds [NFX](https://millionrounds.com/fund/nfx) VC firm **2** rounds [Nyca Partners](https://millionrounds.com/fund/nyca-partners) VC firm **2** rounds [Draper Associates](https://millionrounds.com/fund/draper-associates) VC firm **1** round [Octopus Ventures](https://millionrounds.com/fund/octopus-ventures) VC firm **1** round [InterWest Partners](https://millionrounds.com/fund/interwest-partners) VC firm **1** round [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) VC firm **1** round [Precursor Ventures](https://millionrounds.com/fund/precursor-ventures) VC firm **1** round [Kapor Capital](https://millionrounds.com/fund/kapor-capital) VC firm **1** round [Susa Ventures](https://millionrounds.com/fund/susa-ventures) VC firm **1** round [MMC Ventures](https://millionrounds.com/fund/mmc-ventures) VC firm **1** round [AngelPad](https://millionrounds.com/fund/angelpad) Accelerator **1** round [Social Leverage](https://millionrounds.com/fund/social-leverage) VC firm **1** round [Radical Ventures](https://millionrounds.com/fund/radical-ventures) VC firm **1** round [Concept Ventures](https://millionrounds.com/fund/concept-ventures) VC firm **1** round [Siemer Ventures](https://millionrounds.com/fund/siemer-ventures) VC firm **1** round [Thomvest Ventures](https://millionrounds.com/fund/thomvest) VC firm **1** round [One Way Ventures](https://millionrounds.com/fund/one-way-ventures) VC firm **1** round [MicroVentures](https://millionrounds.com/fund/microventures) VC firm **1** round [Emil Michael](https://millionrounds.com/fund/emil-michael) Angel **1** round [Naguib Sawiris](https://millionrounds.com/fund/naguib-sawiris) Angel **1** round Winston Ibrahim no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=ribbon). ## Also claim to have backed them These 3 firms list Ribbon as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Paradigm](https://millionrounds.com/fund/paradigm) VC firm Per its own site [Cadenza Ventures](https://millionrounds.com/fund/cadenza) Private equity Per its own site [Titan Angels LLC](https://millionrounds.com/fund/titan-angels-llc) VC firm Per its own site ## Quick answers about Ribbon ### Who invested in Ribbon? Ribbon's investors include Greylock, Bain Capital Ventures, NFX, Nyca Partners and Draper Associates, and 18 more on record. ### How much has Ribbon raised? Ribbon has raised $271M across 8 rounds since 2011. ### When did Ribbon last raise? Ribbon's most recent round was a Seed of $8.2M in Mar 2025. ### What was Ribbon's biggest round? Ribbon's largest round on record is $225M (Series A), in Oct 2018. ### Who backed Ribbon first? Ribbon's first round on record, in Sept 2011, was backed by InterWest Partners, Sierra Ventures and AngelPad. ### What stage is Ribbon at? Ribbon's latest named round is a Seed, in Mar 2025. ### Where is Ribbon based? Ribbon is based in the United States. ### Who led Ribbon's rounds? Greylock led the Series B in 2019. ## Companies like Ribbon In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo) ## 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