# OneSignal funding: rounds and investors > OneSignal has raised $27M across 3 rounds since 2015. Investors include SignalFire, Y Combinator and Rakuten Capital. Every round with its source. Source: https://millionrounds.com/company/onesignal (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *OneSignal* 3 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. Advertising & Adtech Martech Y Combinator: S11 Funding summary Updated 26 Oct 2026 **$27M** raised across 3 rounds since 2015, from 3 sources **$2.0M** Seed **$25M** Series B - **Latest round:** Venture Jan 2023 - **Biggest round:** $25M Series B · Jul 2019 - **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. 2015 2017 2019 2021 2023 **$2.0M** Seed **$25M** Series B **?** Venture - **First round:** Seed, $2.0M - **Biggest round:** $25M - **Usual gap between rounds:** 4.3 years ## The rounds - **Jan 2023** Venture **Amount undisclosed** *2 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [SignalFire](https://millionrounds.com/fund/signalfire) Source recorded - **Jul 2019** Series B **$25M** *1 new* *1 returning* [SignalFire](https://millionrounds.com/fund/signalfire) Lead [Rakuten Capital](https://millionrounds.com/fund/rakuten-capital) Reported by Newswire - **Apr 2015** Seed **$2.0M** *4 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rakuten Capital](https://millionrounds.com/fund/rakuten-capital) [Justin Kan](https://millionrounds.com/fund/justin-kan) [Zach Coelius](https://millionrounds.com/fund/zach-coelius) From a historical funding record ## 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** 2015 **Series B** 2019 **Venture** 2023 [SignalFire](https://millionrounds.com/fund/signalfire) L [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rakuten Capital](https://millionrounds.com/fund/rakuten-capital) [Justin Kan](https://millionrounds.com/fund/justin-kan) [Zach Coelius](https://millionrounds.com/fund/zach-coelius) ## Everyone who backed them [SignalFire](https://millionrounds.com/fund/signalfire) VC firm **2** rounds, led 1 [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Rakuten Capital](https://millionrounds.com/fund/rakuten-capital) Corporate VC **2** rounds [Justin Kan](https://millionrounds.com/fund/justin-kan) VC firm **1** round [Zach Coelius](https://millionrounds.com/fund/zach-coelius) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=onesignal). ## Also claim to have backed them These 2 firms list OneSignal 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. [Yes VC](https://millionrounds.com/fund/yes-vc) VC firm Per its own site [Conduit](https://millionrounds.com/fund/conduit) Accelerator Per its own site ## Quick answers about OneSignal ### Who invested in OneSignal? OneSignal's investors include SignalFire, Y Combinator, Rakuten Capital, Justin Kan and Zach Coelius. ### How much has OneSignal raised? OneSignal has raised $27M across 3 rounds since 2015. One round did not disclose an amount, so the total is a floor. ### When did OneSignal last raise? OneSignal's most recent round was a Venture in Jan 2023. ### What was OneSignal's biggest round? OneSignal's largest round on record is $25M (Series B), in Jul 2019, led by SignalFire. ### Who backed OneSignal first? OneSignal's first round on record, in Apr 2015, was backed by Y Combinator, Rakuten Capital and Justin Kan and 1 others. ### What stage is OneSignal at? OneSignal's latest named round is a Venture, in Jan 2023. ### Where is OneSignal based? OneSignal is based in the United States. ### Who led OneSignal's rounds? SignalFire led the Series B in 2019. ## Companies like OneSignal In the same sector, and raised in the last eighteen months. [**Kevel** $75M · Oct 2026](https://millionrounds.com/company/kevel)[**Whop** $400M · Oct 2026](https://millionrounds.com/company/whop)[**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**Gradient** $24M · Oct 2026](https://millionrounds.com/company/gradient)[**OuterSignal** $22M · Sept 2026](https://millionrounds.com/company/outersignal)[**Pipedrive** $90M · Sept 2026](https://millionrounds.com/company/pipedrive) ## 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