# Whistle funding: rounds and investors > Whistle has raised $87M across 4 rounds since 2013. Investors include Slow Ventures, DCM Ventures and Melo7 Tech Partners. Every round with its source. Source: https://millionrounds.com/company/whistle (Millionrounds; every figure on the page links to its filing or article) United States · [Seed startup](https://millionrounds.com/companies) # Who invested in *Whistle* 4 rounds we have observed, with the 12 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. Consumer Apps Funding summary Updated 26 Oct 2026 **$87M** raised across 4 rounds since 2013, from 4 sources **$6.0M** Series A **$15M** Series B **$66M** Series D **$1K** Seed - **Latest round:** Seed, $1K Mar 2022 - **Biggest round:** $66M Series D · Jul 2020 - **Investors:** 12 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. 2013 2015 2017 2019 2021 **$6.0M** Series A **$15M** Series B **$66M** Series D **$1K** Seed - **First round:** Series A, $6.0M - **Biggest round:** $66M - **Usual gap between rounds:** 20 months ## The rounds - **Mar 2022** Seed **$1K** *1 new* *2 returning* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Slow Ventures](https://millionrounds.com/fund/slow-ventures) [DCM Ventures](https://millionrounds.com/fund/dcm-ventures) Source recorded - **Jul 2020** Series D **$66M** *2 new* [Beringea](https://millionrounds.com/fund/beringea) [WndrCo](https://millionrounds.com/fund/wndrco) Source recorded - **Jan 2015** Series B **$15M** *3 new* *1 returning* [Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) [QueensBridge Venture Partners](https://millionrounds.com/fund/queensbridge-venture-partners) [Nokia Growth Partners](https://millionrounds.com/fund/nokia-growth-partners) [Melo7 Tech Partners](https://millionrounds.com/fund/melo7-tech-partners) From a historical funding record SEC filing: $15M sold, first sale Jan 2015 - **Jun 2013** Series A **$6.0M** *6 new* [Slow Ventures](https://millionrounds.com/fund/slow-ventures) [DCM Ventures](https://millionrounds.com/fund/dcm-ventures) [Kevin Colleran](https://millionrounds.com/fund/kevin-colleran) [RedSwan VC](https://millionrounds.com/fund/red-swan-ventures-2) [Melo7 Tech Partners](https://millionrounds.com/fund/melo7-tech-partners) [Gunderson Dettmer](https://millionrounds.com/fund/gunderson-dettmer) Reported by pevc.dowjones.com ## Founders and team From Whistle's own website: 6 on the team. - **David Zeff** CEO - **Yonah Zeff** COO - **Bianca Goodrich** Head of Human Resources - **Bronwyn Johnson** Head of Customer Success - **Cheryl Segon** Head of Finance - **Kayla du Plessis** Head of GTM ## 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. **Series A** 2013 **Series B** 2015 **Series D** 2020 **Seed** 2022 [Slow Ventures](https://millionrounds.com/fund/slow-ventures) [DCM Ventures](https://millionrounds.com/fund/dcm-ventures) [Melo7 Tech Partners](https://millionrounds.com/fund/melo7-tech-partners) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) [QueensBridge Venture Partners](https://millionrounds.com/fund/queensbridge-venture-partners) [Beringea](https://millionrounds.com/fund/beringea) [WndrCo](https://millionrounds.com/fund/wndrco) [Nokia Growth Partners](https://millionrounds.com/fund/nokia-growth-partners) [Kevin Colleran](https://millionrounds.com/fund/kevin-colleran) ## Everyone who backed them [Slow Ventures](https://millionrounds.com/fund/slow-ventures) VC firm **2** rounds [DCM Ventures](https://millionrounds.com/fund/dcm-ventures) Private equity **2** rounds [Melo7 Tech Partners](https://millionrounds.com/fund/melo7-tech-partners) VC firm **2** rounds [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round [Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) Corporate VC **1** round [QueensBridge Venture Partners](https://millionrounds.com/fund/queensbridge-venture-partners) VC firm **1** round [Beringea](https://millionrounds.com/fund/beringea) Private equity **1** round [WndrCo](https://millionrounds.com/fund/wndrco) Private equity **1** round [Nokia Growth Partners](https://millionrounds.com/fund/nokia-growth-partners) VC firm **1** round [Kevin Colleran](https://millionrounds.com/fund/kevin-colleran) VC firm **1** round [RedSwan VC](https://millionrounds.com/fund/red-swan-ventures-2) VC firm **1** round [Gunderson Dettmer](https://millionrounds.com/fund/gunderson-dettmer) Corporate VC **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=whistle). ## Quick answers about Whistle ### Who invested in Whistle? Whistle's investors include Slow Ventures, DCM Ventures, Melo7 Tech Partners, Alumni Ventures and Qualcomm Ventures, and 7 more on record. ### How much has Whistle raised? Whistle has raised $87M across 4 rounds since 2013. ### When did Whistle last raise? Whistle's most recent round was a Seed of $1K in Mar 2022. ### What was Whistle's biggest round? Whistle's largest round on record is $66M (Series D), in Jul 2020. ### Who backed Whistle first? Whistle's first round on record, in Jun 2013, was backed by Slow Ventures, DCM Ventures and Kevin Colleran and 3 others. ### What stage is Whistle at? Whistle's latest named round is a Seed, in Mar 2022. ### Where is Whistle based? Whistle is based in the United States. ## Companies like Whistle In the same sector, and raised in the last eighteen months. [**Punch** $11M · Oct 2026](https://millionrounds.com/company/punch)[**Albert** $57M · Oct 2026](https://millionrounds.com/company/albert)[**Welltory** $4.0M · Oct 2026](https://millionrounds.com/company/welltory)[**Arena** $401M · Oct 2026](https://millionrounds.com/company/arena)[**Bloom** $418M · Oct 2026](https://millionrounds.com/company/bloom)[**Clockout** $5.5M · Oct 2026](https://millionrounds.com/company/clockout) ## 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