United States · 
Who invested in ContraFect?
ContraFect's investors include Equity Source Partners and Maxim Group.
20112012201320142015
$4.3MVenture$4.3MVenture$13MVenture$12MDebt$20MVentureUnited States · Venture startup
Who invested in ContraFect
5 rounds we have observed, with the 2 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.
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Funding summaryUpdated 5 Nov 2026
$53Mraised across 5 rounds since 2010, from 5 sources
$13MVenture$12MDebt$20MVenture
- Latest round
- Venture, $20MJun 2015
- Step-upi
- 1.7×
- Investors
- 2
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture, $4.3M Aug 2010
- Biggest round
- $20M Venture · Jun 2015
- Usual gap between rounds
- 22 months the median of 4
The rounds
- Jun 2015Venture$20M
No investor was named in the report.
From a historical funding recordSEC filing: $20M sold, first sale Jun 2015
- Sept 2013Debt$12M
No investor was named in the report.
Reported by sec.govSEC filing: $12M sold, first sale Jun 2013
- Sept 2011
- Oct 2010Venture$4.3M1 returning
Reported by sec.govSEC filing: $4.3M sold, first sale Aug 2010
- Aug 2010Venture$4.3M1 new
From a historical funding recordSEC filing: $4.3M sold, first sale Aug 2010
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
Equity Source PartnersVC firm2rounds
Missing a round, or an investor who was in one? Tell us.
Quick answers about ContraFect
How much has ContraFect raised?
ContraFect has raised $53M across 5 rounds since 2010.
When did ContraFect last raise?
ContraFect's most recent round was a Venture of $20M in Jun 2015.
What was ContraFect's biggest round?
Its most recent round, $20M in Jun 2015, is also its largest on record.
Who backed ContraFect first?
ContraFect's first round on record, in Aug 2010, was backed by Equity Source Partners.
What stage is ContraFect at?
ContraFect's latest named round is a Venture, in Jun 2015.
Where is ContraFect based?
ContraFect is based in the United States.
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