Onebrief

Onebrief is an AI-powered platform that supports operational planning, collaboration, and decision workflows for military and command teams.

Defense and securityY Combinator

Latest funding

$200M Series B+ · January 13, 2026

Led by Battery Ventures · Source: fundraisingfox.com

Total raised: $323M across 4 sourced rounds

All 5 rounds ↓

Website: onebrief.com.

X: @Onebriefapp · 292 followers.

LinkedIn: linkedin.com.

Category: Defense and security.

Sectors: B2B, SaaS, GovTech, Defense.

Stage: Series B+.

Based in: Honolulu, United States.

Founded: 2019.

Total raised: $323M in 4 sourced rounds.

Last round: Jan 13, 2026 · 303 days ago.

Team: 200 people on the team page.

On Recent Funding since: Sep 28, 2026.

Signals

X account@Onebriefapp · created May 6, 2019 (7 years old) · 292 followers

Website registeredDec 20, 2014 (11 years old)

TIMELINE · MONEY RAISED

Onebrief | 1934 days from X account to first raise on record

@Onebriefapp·Raised $323M in 4 sourced rounds·1 signal before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

January 13, 2026
Series B+ · $200M
BBattery Ventures (lead), SSapphire Ventures (lead), GGeneral Catalyst, IInsight Partners, SSalesforce Ventures
Source: fundraisingfox.com
June 16, 2025
Series B+ · $20M
BBattery Ventures (lead), KKyber Knight
Source: pulse2.com
January 29, 2025
Series B+ · $50M
GGeneral Catalyst (lead), IInsight Partners (lead), 99Yards, CCaffeinated Capital, HHuman Capital
Source: thesaasnews.com
August 21, 2024
Series B+ · $53M
HHuman Capital (lead), 99Yards, CCaffeinated Capital, MMana Ventures
Source: vcaonline.com
Summer 2021
YY Combinator · batch
Source: ycombinator.com
May 6, 2019
X account created
December 20, 2014
Website created

Founders and team

GD
Grant Demaree CEO and co-founder

@DemareeGrant · LinkedIn · source: foundertrace.com
RP
Rafa Pereira Co-Founder (Retired)

@rflprr · LinkedIn · source: foundertrace.com
CO
Colten O'Malley Chief Information Security Officer
CO
Cory Ondrejka Chief Technology Officer
DW
David Wolf VP of Engineering
JH
Johnny Hunter Lead Designer
LS
Lucas Santos Sr Product Engineer
RB
R. Blake Lackey Head of Sales

Acquisitions

Acquired company	Price	Announced
BBattle Road Digital	Not disclosed	Jan 13, 2026 · Business Wire

Investors

Companies like Onebrief

PPactFi$25M Series A · Mar 2026
AActio Biosciences$66M Series B+ · Jun 2025
OOnePlan$5.3M Series A · Apr 2022
HHYDROGRID$8.5M Series A · Dec 2023
GGuardadoria
Hhapi-robo st

Other companies backed by Battery Ventures

BBay$37M Series A · Nov 2026
MMiter$40M Series B+ · Sep 2026
GG5 Labs$14M Seed · Sep 2026
FFlash$28.8M Series B+ · Aug 2026
RRillet$100M Series B+ · Aug 2026
AAegis AI$36M Series A · Aug 2026

Battery Ventures portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/onebrief (get a free API key).