Who invested in Mark43?
Mark43's investors include General Catalyst, SV Angel, Spark Capital, Goldman Sachs and Innovation Endeavors, and 15 more on record.

United States · Series E startup
Funding summaryUpdated 26 Oct 2026
$91Mraised across 5 rounds since 2013, from 5 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Source recordedSEC filing: $40M sold, first sale Mar 2024
Reported by FinSMEsSEC filing: $38M sold, first sale Nov 2017
From a historical funding record
Reported by forbes.comSEC filing: $1.8M sold, first sale Jun 2013
From Mark43's own website and the SEC filings it signed: 2 founders, 18 on the team.
On the board, as filediAlex FinkelsteinBenjamin SteinJD ShermanKathleen O'TooleLarry Bohn
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Mark43's investors include General Catalyst, SV Angel, Spark Capital, Goldman Sachs and Innovation Endeavors, and 15 more on record.
Mark43 has raised $91M across 5 rounds since 2013.
Mark43's most recent round was a Series E of $40M in May 2024.
Its most recent round, $40M in May 2024, is also its largest on record.
Mark43's first round on record, in May 2013, was backed by Harvard University.
Mark43's latest named round is a Series E, in May 2024.
Mark43 is based in the United States.
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