# Circle Medical funding: rounds and investors > Circle Medical has raised $6.4M across 3 rounds since 2015. Investors include Collaborative Fund, Tengxun Touzi and Y Combinator. Every round with its source. Source: https://millionrounds.com/company/circle-medical (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Circle Medical* 3 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. Follow Circle Medical and see its new rounds in your feed. [Sign up free](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fcircle-medical) Biotech Fitness Healthcare Y Combinator: S15 Funding summary Updated 27 Oct 2026 **$6.4M** raised across 3 rounds since 2015, from 3 sources **$2.9M** Seed **$3.5M** Round - **Latest round:** Venture Mar 2019 - **Biggest round:** $3.5M Round · Nov 2018 - **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. 2016 2017 2018 2019 **$2.9M** Seed **$3.5M** Round **?** Venture - **First round:** Seed, $2.9M - **Biggest round:** $3.5M - **Usual gap between rounds:** 3 years ## The rounds - **Mar 2019** Venture **Amount undisclosed** *3 new* *2 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) Source recorded - **Nov 2018** Round **$3.5M** *2 new* *1 returning* [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) A.Capital/ Y Combinator WELL Health Reported by FinSMEs SEC filing: $6.1M sold, first sale Jul 2018 - **Nov 2015** Seed **$2.9M** *7 new* [Kima Ventures](https://millionrounds.com/fund/kima-ventures) [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) [Social Starts](https://millionrounds.com/fund/social-starts) [Altair Capital](https://millionrounds.com/fund/altair-capital-2) [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Jawed Karim](https://millionrounds.com/fund/jawed-karim) 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 **Round** 2018 **Venture** 2019 [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Kima Ventures](https://millionrounds.com/fund/kima-ventures) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Social Starts](https://millionrounds.com/fund/social-starts) [Altair Capital](https://millionrounds.com/fund/altair-capital-2) [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Jawed Karim](https://millionrounds.com/fund/jawed-karim) ## Everyone who backed them [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) VC firm **3** rounds [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) VC firm **2** rounds [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round [SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round [Kima Ventures](https://millionrounds.com/fund/kima-ventures) VC firm **1** round [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) VC firm **1** round [Social Starts](https://millionrounds.com/fund/social-starts) VC firm **1** round [Altair Capital](https://millionrounds.com/fund/altair-capital-2) Private equity **1** round [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) Angel **1** round [Jawed Karim](https://millionrounds.com/fund/jawed-karim) Angel **1** round A.Capital/ Y Combinator no record of our own yet **1** round WELL Health 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=circle-medical). ## Also claim to have backed them These 5 firms list Circle Medical 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. [A.Capital Ventures](https://millionrounds.com/fund/a-capital-ventures) VC firm Per its own site [AltaIR Capital](https://millionrounds.com/fund/altair-capital) VC firm Per its own site [advisors.fund](https://millionrounds.com/fund/advisors-fund) VC firm Per its own site [Catapult](https://millionrounds.com/fund/catapult-vc) VC firm Per its own site [Noosphere Ventures](https://millionrounds.com/fund/noosphere-ventures) Corporate VC Per its own site ## Quick answers about Circle Medical ### Who invested in Circle Medical? Circle Medical's investors include Collaborative Fund, Tengxun Touzi, Y Combinator, SV Angel and Kima Ventures, and 7 more on record. ### How much has Circle Medical raised? Circle Medical has raised $6.4M across 3 rounds since 2015. One round did not disclose an amount, so the total is a floor. ### When did Circle Medical last raise? Circle Medical's most recent round was a Venture in Mar 2019. ### What was Circle Medical's biggest round? Circle Medical's largest round on record is $3.5M (Undisclosed round), in Nov 2018. ### Who backed Circle Medical first? Circle Medical's first round on record, in Nov 2015, was backed by Kima Ventures, Tengxun Touzi and Collaborative Fund and 4 others. ### What stage is Circle Medical at? Circle Medical's latest named round is a Venture, in Mar 2019. ### Where is Circle Medical based? Circle Medical is based in the United States. ## Companies like Circle Medical In the same sector, and raised in the last eighteen months. [**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba) ## 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