Who invested in Justworks

6 rounds we have observed, with the 14 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.

B2B

Valuation: $1.4B, Mar 2026

Funding summaryUpdated 26 Oct 2026

$110Mraised across 6 rounds since 2013, from 6 sources

$1.0MSeed$6.0MSeries A$13MSeries B$33MRound$40MSeries D$17MVenture

Latest round: Venture, $17MNov 2023
Biggest round: $40MSeries D · Mar 2018
Investors: 14

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.

20152017201920212023

$1.0MSeed$6.0MSeries A$13MSeries B$33MRound$40MSeries D$17MVenture

First round: Seed, $1.0M
Biggest round: $40M
Usual gap between rounds: 12 months

The rounds

Nov 2023
Venture$17M3 new3 returning
Source recordedSEC filing: $17M sold, first sale Sept 2023
Mar 2018
Series D$40M3 new1 returning
- Redpoint
- Thrive Capital
- Bain & Company
- FirstMark Capital/ Index
Reported by FinSMEsSEC filing: $40M sold, first sale Feb 2018
Mar 2016
Round$33M4 new4 returning
Source recorded
May 2015
Series B$13M1 new2 returning
From a historical funding recordSEC filing: $13M sold, first sale Apr 2015
Oct 2014
Series A$6.0M1 new1 returning
- Index Ventures
- Thrive Capital
From a historical funding recordSEC filing: $11M sold, first sale Sept 2014
Oct 2013
Seed$1.0M2 new
- Index Ventures
- Daring Journey Ventures
Reported by finsmes.com

Founders and team

From the SEC filings it signed: 2 on the team.

Johnathan MirianExecutive Officeri
Seckler MichaelDirector, Executive Officeri

On the board, as filediCharles BergChiu EmilyIsaac OatesJared WeinsteinKaren MageeKristina LeslieMatthew Harris

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.

Seed2013Series A2014Series B2015Round2016Series D2018Venture2023

Index Ventures

Thrive Capital

Redpoint

Bain Capital Ventures

LocalGlobe

Daring Journey Ventures

Spark Capital

Union Square Ventures

FirstMark

Capital Factory

Everyone who backed them

Index VenturesVC firm5rounds

Thrive CapitalFamily office4rounds

RedpointVC firm2rounds

Bain Capital VenturesVC firm2rounds

LocalGlobeVC firm2rounds

Daring Journey VenturesVC firm2rounds

Spark CapitalVC firm1round

Union Square VenturesVC firm1round

FirstMarkVC firm1round

Capital FactoryVC firm1round

Thrive CapitalAccelerator1round

Joanne WilsonAngel1round

Bain & CompanyVC firm1round

FirstMark Capital/ Indexno record of our own yet1round

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

Also claim to have backed them

These 2 firms list Justworks 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.