Who invested in Mattermost?
Mattermost's investors include Y Combinator Continuity, Y Combinator, Redpoint, Battery Ventures and S28 Capital, and 1 more on record. Y Combinator Continuity led its latest round.

United States · Series B startup
Funding summaryUpdated 26 Oct 2026
$70Mraised across 2 rounds since 2019, from 2 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Reported by FinSMEsSEC filing: $50M sold, first sale Jun 2019
From Mattermost's own website and the SEC filings it signed: 1 founder, 9 on the team.
On the board, as filediAli RowghaniShvetank JainTomasz Tunguz
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Mattermost's investors include Y Combinator Continuity, Y Combinator, Redpoint, Battery Ventures and S28 Capital, and 1 more on record. Y Combinator Continuity led its latest round.
Mattermost has raised $70M across 2 rounds since 2019.
Mattermost's most recent round was a Series B of $50M in Jun 2019, led by Y Combinator Continuity.
Its most recent round, $50M in Jun 2019, is also its largest on record.
Mattermost's first round on record, in Feb 2019, was backed by Y Combinator and Redpoint Ventures/ S28.
Mattermost's latest named round is a Series B, in Jun 2019.
Mattermost is based in the United States.
Y Combinator Continuity led the Series B in 2019.
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