Who invested in ZocDoc

6 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.

IT Services

Valuation: $1.8B, Mar 2026

Funding summaryUpdated 26 Oct 2026

$228Mraised across 6 rounds since 2008, from 6 sources

$5.0MSeries A$940KVenture$15MSeries B$75MSeries C$2.0MDebt$130MSeries D

Latest round: Series D, $130MAug 2015
Step-upi: 65×
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.

2009201020112012201320142015

$5.0MSeries A$940KVenture$15MSeries B$75MSeries C$2.0MDebt$130MSeries D

First round: Series A, $5.0M
Biggest round: $130M
Usual gap between rounds: 14 months

The rounds

Aug 2015
Series D$130M2 new1 returning
From a historical funding recordSEC filing: $80M sold, first sale Jul 2015
Jun 2013
Debt$2.0M
No investor was named in the report.
Reported by techcrunch.comSEC filing: $2.0M sold, first sale Jun 2013
Sept 2011
Series C$75M3 new
Reported by techcrunch.comSEC filing: $50M sold, first sale Jul 2011
Jul 2010
Series B$15M2 new1 returning
Reported by techcrunch.comSEC filing: $15M sold, first sale Jul 2010
Jul 2009
Venture$940K
No investor was named in the report.
From a historical funding recordSEC filing: $940K sold, first sale Jul 2009
Aug 2008
Series A$5.0M5 new
Reported by paidcontent.org

Founders and team

From the SEC filings it signed: 4 on the team.

Cyrus MassoumiExecutive Officer, Directori
Joaquin GamboaExecutive Officeri
Netta SamroengrajaExecutive Officer, Directori
Oliver KharrazExecutive Officer, Directori

On the board, as filediDavid WeidenKen Howery

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 A2008Venture2009Series B2010Series C2011Debt2013Series D2015

DST GlobalMarc BenioffBaillie Gifford

Jason FingerJeff Bezos

Everyone who backed them

Khosla VenturesVC firm2rounds

Founders FundVC firm2rounds

SV AngelVC firm1round

Goldman SachsPrivate equity1round

AtomicoVC firm1round

DST GlobalPrivate equity1round

Marc BenioffVC firm1round

Baillie GiffordAsset manager1round

Jason FingerAngel1round

Jeff BezosAngel1round

Vast VenturesVC firm1round

Digital Sky TechnologiesInvestment firm1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 6 firms list ZocDoc 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.