United States · Funded startup

Who invested in Signpost

6 rounds we have observed, with the 11 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.

Advertising & AdtechMartech

Funding summaryUpdated 26 Oct 2026

$89Mraised across 6 rounds since 2010, from 6 sources

$1.1MRound$1.3MVenture$3.8MSeries A$10MSeries B$21MSeries C$52MRound
Latest round
Round, $52MJul 2019
Step-upi
2.5×
Investors
11
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.

20102012201420162018
$1.1MRound$1.3MVenture$3.8MSeries A$10MSeries B$21MSeries C$52MRound
First round
Round, $1.1M
Mar 2010
Biggest round
$52M
Round · Jul 2019
Usual gap between rounds
18 months
the median of 5
SignpostAdtech/martech1 / 19Their pitch deckSignpost's pitch deck, 19 slidesEach slide read for what it argues, against the decks that raised at the same stage.

The rounds

  1. Jul 2019
  2. Apr 2015
    Series C$21M4 new2 returning

    From a historical funding recordSEC filing: $20M sold, first sale Apr 2015

  3. Nov 2013
    Series B$10M3 new1 returning

    Reported by techcrunch.comSEC filing: $11M sold, first sale Nov 2013

  4. May 2012
    Series A$3.8M1 returning

    Reported by techcrunch.comSEC filing: $3.8M sold, first sale Apr 2012

  5. Oct 2010
    Venture$1.3M1 new

    Reported by finsmes.com

  6. Mar 2010
    Round$1.1M1 new

    From a historical funding record

Founders and team

From the SEC filings it signed: 1 on the team.

  • Stuart WallExecutive Officer, Directori

On the board, as filediAdam MarcusJohn BuchananJustin LaFayetteTodd Dagres

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

Spark CapitalVC firm5rounds
Scout VenturesVC firm2rounds
GeorgianVC firm2rounds
Google VenturesCorporate VC1round
LAUNCHAccelerator1round
Bradley C. HarrisonVC firm1round
OpenViewVC firm1round
HighBar PartnersPrivate equity1round
Jack HerrickAngel1round
BMO Bank of MontrealInvestment firm1round

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

Also claim to have backed them

This firm lists Signpost as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

Quick answers about Signpost

Who invested in Signpost?

Signpost's investors include Spark Capital, Scout Ventures, Georgian, Google Ventures and LAUNCH, and 6 more on record.

How much has Signpost raised?

Signpost has raised $89M across 6 rounds since 2010.

When did Signpost last raise?

Signpost's most recent round was an Undisclosed round of $52M in Jul 2019.

What was Signpost's biggest round?

Its most recent round, $52M in Jul 2019, is also its largest on record.

Who backed Signpost first?

Signpost's first round on record, in Mar 2010, was backed by Spark Capital.

What stage is Signpost at?

Signpost's latest named round is an Undisclosed round, in Jul 2019.

Where is Signpost based?

Signpost is based in the United States.

Companies like Signpost

In the same sector, and raised in the last eighteen months.

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