United States · Series A startup

Who invested in ChallengePost

3 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.

Funding summaryUpdated 26 Oct 2026

$4.6Mraised across 3 rounds since 2008, from 3 sources

$500KSeed$4.1MSeries A
Latest round
Series A, $4.1MAug 2011
Step-upi
8.2×
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.

200920102011
?Seed$500KSeed$4.1MSeries A
First round
Seed
Sept 2008
Biggest round
$4.1M
Series A · Aug 2011
Usual gap between rounds
2.1 years
the median of 2

The rounds

  1. Aug 2011
    Series A$4.1M3 new4 returning

    Reported by xconomy.comSEC filing: $4.2M sold, first sale Nov 2010

  2. Jun 2009
    Seed$500K7 new3 returning

    Reported by venturebeat.comSEC filing: $463K sold, first sale Nov 2008

  3. Sept 2008
    SeedAmount undisclosed4 new

    From a historical funding record

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.

Seed2008Seed2009Series A2011BetaworksEsther DysonJason CalacanisCoriolis VenturesSteve WozniakJoshua SchachterOpus Capital Group LLCRose Tech VenturesTrajectory CapitalScott Kurnit

Everyone who backed them

BetaworksVC firm3rounds
Esther DysonVC firm3rounds
Jason CalacanisVC firm2rounds
Coriolis VenturesVC firm2rounds
Steve WozniakVC firm2rounds
Joshua SchachterVC firm1round
Opus Capital Group LLCInvestment firm1round
Rose Tech VenturesAccelerator1round
Trajectory CapitalFamily office1round
Scott KurnitAngel1round
Richmond Park PartnersInvestment bank1round
PKS CapitalVC firm1round
Andrew RasiejVC firm1round
Gerry CampbellAngel1round

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

Quick answers about ChallengePost

Who invested in ChallengePost?

ChallengePost's investors include Betaworks, Esther Dyson, Jason Calacanis, Coriolis Ventures and Steve Wozniak, and 9 more on record.

How much has ChallengePost raised?

ChallengePost has raised $4.6M across 3 rounds since 2008. One round did not disclose an amount, so the total is a floor.

When did ChallengePost last raise?

ChallengePost's most recent round was a Series A of $4.1M in Aug 2011.

What was ChallengePost's biggest round?

Its most recent round, $4.1M in Aug 2011, is also its largest on record.

Who backed ChallengePost first?

ChallengePost's first round on record, in Sept 2008, was backed by Betaworks, Esther Dyson and Trajectory Capital and 1 others.

What stage is ChallengePost at?

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

Where is ChallengePost based?

ChallengePost is based in the United States.

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