Funded startup

Who invested in OnTopx

One round we have observed, with the one investor named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Advertising & Adtech

Funding summaryUpdated 26 Oct 2026

$3.4Mraised across 1 round since 2011, from 1 source

Latest round
Round, $3.4MApr 2011
Investors
1
See who backed them

The rounds

  1. Apr 2011
    Round$3.4M

    From a historical funding record

Everyone who backed them

b-to-v Partners AGVC firm1round

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

Quick answers about OnTopx

Who invested in OnTopx?

OnTopx's investors include b-to-v Partners AG.

How much has OnTopx raised?

OnTopx has raised $3.4M across 1 round since 2011.

When did OnTopx last raise?

OnTopx's most recent round was an Undisclosed round of $3.4M in Apr 2011.

What was OnTopx's biggest round?

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

Who backed OnTopx first?

OnTopx's first round on record, in Apr 2011, was backed by b-to-v Partners AG.

What stage is OnTopx at?

OnTopx's latest named round is an Undisclosed round, in Apr 2011.

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