Funded startup

Who invested in Stheno Corporation

5 rounds we have observed, with the one investor 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

$2.5Mraised across 5 rounds since 2005, from 5 sources

Latest round
Debt, $2.5MApr 2007
Investors
1
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.

20062007
?Seed?Seed?Seed?Seed$2.5MDebt
First round
Seed
Mar 2005
Biggest round
$2.5M
Debt · Apr 2007
Usual gap between rounds
8 months
the median of 4

The rounds

  1. Apr 2007
    Debt$2.5M1 returning

    From a historical funding record

  2. Jan 2007
    SeedAmount undisclosed1 returning

    From a historical funding record

  3. Apr 2006
    SeedAmount undisclosed1 returning

    From a historical funding record

  4. Aug 2005
    SeedAmount undisclosed1 returning

    From a historical funding record

  5. Mar 2005
    SeedAmount undisclosed1 new

    From a historical funding record

The exit

ExitBuyerPriceWhen
AcquiredSpectra Analysis InstrumentsundisclosedNov 2008

From historical deal records. Wrong? Tell us.

Everyone who backed them

ATDCAccelerator5rounds

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

Quick answers about Stheno Corporation

Who invested in Stheno Corporation?

Stheno Corporation's investors include ATDC.

How much has Stheno Corporation raised?

Stheno Corporation has raised $2.5M across 5 rounds since 2005. 4 rounds did not disclose an amount, so the total is a floor.

When did Stheno Corporation last raise?

Stheno Corporation's most recent round was a Debt of $2.5M in Apr 2007.

What was Stheno Corporation's biggest round?

Its most recent round, $2.5M in Apr 2007, is also its largest on record.

Who backed Stheno Corporation first?

Stheno Corporation's first round on record, in Mar 2005, was backed by ATDC.

What stage is Stheno Corporation at?

Stheno Corporation's latest named round is a Debt, in Apr 2007.

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