United States · Who invested in Quartet?
Quartet's investors include F-Prime Capital, Oak HC/FT, Google Ventures, Polaris Partners and Centene Corporation, and 1 more on record.
201720182019
$40MSeries C$60MSeries DUnited States · Series D startup
Who invested in Quartet
2 rounds we have observed, with the 6 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.
Funding summaryUpdated 26 Oct 2026
$100Mraised across 2 rounds since 2017, from 2 sources
$40MSeries C$60MSeries D
- Latest round
- Series D, $60MJun 2019
- Step-upi
- 1.5×
- Investors
- 6
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series C, $40M Jan 2017
- Biggest round
- $60M Series D · Jun 2019
- Between rounds
- 2.4 years from the last two
The rounds
- Jun 2019Series D$60M3 new2 returning
Google Ventures
Polaris Partners
F-Prime Capital
Oak HC/FT- Centene Corporation
Reported by FinSMEs
- Jan 2017
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 C2017Series D2019F-Prime CapitalOak HC/FTGoogle VenturesPolaris PartnersCentene CorporationPolaris Partners/ GV
F-Prime CapitalOak HC/FTGoogle VenturesPolaris PartnersCentene CorporationPolaris Partners/ GVEveryone who backed them
Centene Corporationno record of our own yet1round
Polaris Partners/ GVno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Quartet
How much has Quartet raised?
Quartet has raised $100M across 2 rounds since 2017.
When did Quartet last raise?
Quartet's most recent round was a Series D of $60M in Jun 2019.
What was Quartet's biggest round?
Its most recent round, $60M in Jun 2019, is also its largest on record.
Who backed Quartet first?
Quartet's first round on record, in Jan 2017, was backed by F-Prime Capital, Oak HC/FT and Polaris Partners/ GV.
What stage is Quartet at?
Quartet's latest named round is a Series D, in Jun 2019.
Where is Quartet based?
Quartet is based in the United States.
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