United States · Series A startup

Who invested in SironRX Therapeutics

2 rounds we have observed, with the 8 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

$3.9Mraised across 2 rounds since 2011, from 2 sources

$500KVenture$3.4MSeries A
Latest round
Series A, $3.4MAug 2011
Step-upi
6.8×
Investors
8
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.

2012
$500KVenture$3.4MSeries A
First round
Venture, $500K
Feb 2011
Biggest round
$3.4M
Series A · Aug 2011
Between rounds
6 months
from the last two

The rounds

  1. Aug 2011
  2. Feb 2011
    Venture$500K2 new

    Reported by massdevice.comSEC filing: $2.3M sold, first sale Apr 2011

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

JumpStartVC firm2rounds
Cleveland ClinicCorporate VC2rounds
Rev1 VenturesCorporate VC1round
TechColumbusVC firm1round

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

Quick answers about SironRX Therapeutics

Who invested in SironRX Therapeutics?

SironRX Therapeutics's investors include JumpStart, Cleveland Clinic, Rev1 Ventures, TechColumbus and North Coast Angel Fund, and 3 more on record.

How much has SironRX Therapeutics raised?

SironRX Therapeutics has raised $3.9M across 2 rounds since 2011.

When did SironRX Therapeutics last raise?

SironRX Therapeutics's most recent round was a Series A of $3.4M in Aug 2011.

What was SironRX Therapeutics's biggest round?

Its most recent round, $3.4M in Aug 2011, is also its largest on record.

Who backed SironRX Therapeutics first?

SironRX Therapeutics's first round on record, in Feb 2011, was backed by JumpStart and Cleveland Clinic.

What stage is SironRX Therapeutics at?

SironRX Therapeutics's latest named round is a Series A, in Aug 2011.

Where is SironRX Therapeutics based?

SironRX Therapeutics is based in the United States.

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