United States · 
Who invested in Onebrief?
Onebrief's investors include Y Combinator, General Catalyst, Insight Partners, Battery Ventures and Salesforce Ventures, and 2 more on record.
20262027
$200MSeries D$114KGrant
United States · Funded startup
Who invested in Onebrief
Funding summaryUpdated 26 Oct 2026
$200Mraised across 2 rounds since 2026, from 3 sources
$200MSeries D$114KGrant
- Latest round
- Grant, $114KJul 2026
- Biggest round
- $200MSeries D · Jan 2026
- Investors
- 7
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series D, $200M Jan 2026
- Biggest round
- $200M Series D · Jan 2026
- Between rounds
- 6 months from the last two
The rounds
- Jul 2026Grant$114K1 new4 returning
Source recordedSEC filing: $151M sold
- Jan 2026Series D$200M6 new
Reported by Crunchbase News and 1 otherSEC filing: $359M sold, first sale Dec 2025
Founders and team
From Onebrief's own website: 6 on the team.
- Colten O'MalleyVice President, People
- Adam LackeyChief Technology Officer
- Cory OndrejkaChief Information Security Officer
- Grant DemareeChief Operating Officer
- Derron BlakelyGeneral Counsel
- Erin PersonGeneral Counsel
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
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 8 firms list Onebrief as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Onebrief
How much has Onebrief raised?
Onebrief has raised $200M across 2 rounds since 2026.
When did Onebrief last raise?
Onebrief's most recent round was a Grant of $114K in Jul 2026.
What was Onebrief's biggest round?
Onebrief's largest round on record is $200M (Series D), in Jan 2026.
Who backed Onebrief first?
Onebrief's first round on record, in Jan 2026, was backed by Y Combinator, General Catalyst and Insight Partners and 3 others.
What stage is Onebrief at?
Onebrief's latest named round is a Grant, in Jul 2026.
Where is Onebrief based?
Onebrief is based in the United States.
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