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- Decibel Partners
Decibel Partners portfolio
Decibel Partners has 12 portfolio companies on record at Recent Funding, with 1 investment in the last 12 months.
About this page
It is a venture capital firm based in Menlo Park, US, founded in 2019. It led 8 of the 13 rounds it joined. Its most recent investment on record is Mantis Biotech's $6.3M Seed round in January 2026, which it led. By category, its portfolio leans toward AI agents (7) and Developer tools and cloud (4). It has co-invested with Slow Ventures, IQT and Theory Ventures, most often Slow Ventures (3 rounds).
About Decibel Partners
What Decibel Partners invests in
- AI agents · 7 · 58%
- Developer tools and cloud · 4 · 33%
- Legal and compliance · 2 · 17%
- Cybersecurity · 2 · 17%
- Foundation models and research · 2 · 17%
- Data and analytics · 2 · 17%
- Health and bio · 1 · 8%
- Education · 1 · 8%
Decibel Partners recent investments
| Company | Round | Date | Alongside |
|---|---|---|---|
| Seed · $6.3M · lead | none named | ||
| Series B+ · $37M | Theory Ventures (lead), Pioneer Square Labs, Madrona +1 | ||
| Seed · $8.5M · lead | none named | ||
| Series A · $15M · lead | none named | ||
| Series B+ · $25M | Inovia Capital, Framework Venture Partners (lead), Deloitte +1 | ||
| Series B+ · $60M | Citi Ventures, IVP (lead), Slow Ventures +1 | ||
| Series A · $15M · lead | none named | ||
| Seed · $11.5M · lead | Sunflower Capital, KAYA |
How Decibel Partners invests
Decibel Partners portfolio companies
MMantis Biotech$6.3MSeed · Jan 2026
DDropzone AI$37MSeries B+ · Sep 2025
VVeris$8.5MSeed · Aug 2025
SScrunch$15MSeries A · Jul 2025
BBotpress$25MSeries B+ · Jul 2025
SSublime Security$60MSeries B+ · Dec 2024
BBrightwave$15MSeries A · Oct 2024
EE2B$11.5MSeed · Oct 2024
SStrellabacker
FFixifybacker
CCube Devbacker
SSpotnanabacker
| Company | Round with Decibel Partners | Total raised | Latest raise |
|---|---|---|---|
Legal and compliance |
Seed · $6.3M · lead | $6.8M | Jan 29, 2026 Seed |
AI agents |
Series B+ · $37M | $57.35M | Sep 4, 2025 Series B+ |
AI agents |
Seed · $8.5M · lead | $8.5M | Aug 15, 2025 Seed |
AI agents |
Series A · $15M · lead | $15M | Jul 22, 2025 Series A |
AI agents |
Series B+ · $25M | $40M | Jul 4, 2025 Series B+ |
Cybersecurity |
Series B+ · $60M | $239.8M | Oct 28, 2025 Series B+ |
AI agents |
Series A · $15M · lead | $21M | Oct 29, 2024 Series A |
AI coding and devtools |
Seed · $11.5M · lead | $32.5M | Mar 6, 2026 Series A |
Data and analytics |
backer · source | $14M | Oct 16, 2025 Series A |
| backer | $25M | Oct 23, 2024 Series A | |
AI agents |
backer | undisclosed | — |
Developer tools and cloud |
backer | $75M | Jul 26, 2022 Series B+ |
Most frequent co-investors
SSlow Ventures3 shared rounds · last Dec 12, 2024
IIQT2 shared rounds · last Sep 4, 2025
TTheory Ventures2 shared rounds · last Sep 4, 2025
IInovia Capital2 shared rounds · last Jul 4, 2025
IIndex Ventures2 shared rounds · last Dec 12, 2024
- OOliver Friedrichs2 shared rounds · last Aug 8, 2023
MMadrona1 shared round · last Sep 4, 2025
PPioneer Square Labs1 shared round · last Sep 4, 2025
HHubSpot Ventures1 shared round · last Jul 4, 2025
DDeloitte1 shared round · last Jul 4, 2025
FFramework Venture Partners1 shared round · last Jul 4, 2025
IIVP1 shared round · last Dec 12, 2024
Similar investors
VVine Ventures12 companies · 7 deals in 12 mo
SSaga Ventures12 companies · 4 deals in 12 mo
AArray Ventures12 companies · 3 deals in 12 mo
EEvantic Capital11 companies · 10 deals in 12 mo
DDeVC11 companies · 5 deals in 12 mo
AAsymmetric Capital Partners11 companies · 3 deals in 12 mo
Investors whose portfolios on Recent Funding center on the same category (AI agents).
How this is counted
Firm profile: Fundraising Fox Open Dataset v2026-11, CC BY 4.0. Track-record counts are theirs, not Recent Funding's.
Share is of the 13 rounds on Recent Funding that name Decibel Partners. Rounds with no announced date are left out of the year split, and "round" is a round whose stage is not on file.
Portfolio companies are the companies on Recent Funding with a round that lists Decibel Partners, which is a subset of its real portfolio. API: /api/v1/investors/decibel-partners (get a free API key). More: the most active VC firms and new venture capital funds.