United States · Series D startup

Who invested in Celtaxsys

3 rounds we have observed, with the 5 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

$46Mraised across 3 rounds since 2009, from 3 sources

$2.0MDebt$4.2MVenture$40MSeries D
Latest round
Series D, $40MJun 2015
Step-upi
9.5×
Investors
5
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
$2.0MDebt$4.2MVenture$40MSeries D
First round
Debt, $2.0M
May 2009
Biggest round
$40M
Series D · Jun 2015
Usual gap between rounds
4.6 years
the median of 2

The rounds

  1. Jun 2015
    Series D$40M5 new

    From a historical funding recordSEC filing: $22M sold, first sale Jun 2015

  2. Oct 2010
    Venture$4.2M

    No investor was named in the report.

    From a historical funding recordSEC filing: $4.2M sold, first sale Oct 2010

  3. May 2009
    Debt$2.0M

    No investor was named in the report.

    From a historical funding recordSEC filing: $2.0M sold, first sale May 2009

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.

Everyone who backed them

Lumira VenturesVC firm1round
Alliance VentureVC firm1round
Domain Partners VIIIInvestment firm1round
Masters CapitalInvestment firm1round
RMI PartnersVC firm1round

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

Quick answers about Celtaxsys

Who invested in Celtaxsys?

Celtaxsys's investors include Lumira Ventures, Alliance Venture, Domain Partners VIII, Masters Capital and RMI Partners.

How much has Celtaxsys raised?

Celtaxsys has raised $46M across 3 rounds since 2009.

When did Celtaxsys last raise?

Celtaxsys's most recent round was a Series D of $40M in Jun 2015.

What was Celtaxsys's biggest round?

Its most recent round, $40M in Jun 2015, is also its largest on record.

Who backed Celtaxsys first?

Celtaxsys's first round on record, in Jun 2015, was backed by Lumira Ventures, Alliance Venture and Domain Partners VIII and 2 others.

What stage is Celtaxsys at?

Celtaxsys's latest named round is a Series D, in Jun 2015.

Where is Celtaxsys based?

Celtaxsys is based in the United States.

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