Underscore VC is a Boston-based venture capital firm backing bold early-stage B2B software founders at Pre-Seed and Seed. The firm uses a community-driven model inspired by open-source principles, engaging a 'Core Community' of expert advisors who share in GP profits to support portfolio companies.
Deal activity increased 50% year-over-year (3 deals in the last 12 months). Their most common stage is seed (49% of deals). Average disclosed round size is $13.0M (across 37 rounds with reported amounts).
Portfolio
31
Fund Size
$58M
Top Stage
Seed
Last 12 Mo
3
Team
John Pearce
Partner Emeritus
Brian Fakhoury
Investment Analyst
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
39 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Slang.ai | Series B | — | Feb 2026 |
 Slang | Series A | $36M | Feb 2026 |
 Terra Security | Series A | $30M | Sep 2025 |
 Korl | Seed | $5M | May 2025 |
| OOrion Security | Seed | $6M | Mar 2025 |
 Cenoa | Seed | $7M | Jan 2025 |
 CloudZero | Series B | $32M | Jun 2023 |
 Pagos | Series A | $34M | Feb 2023 |
 Macro | Seed | $9.3M | Feb 2023 |
| Cenoa | Seed | $7M | Feb 2023 |
 Luminai | Series A | $16M | Jun 2022 |
 Goldcast | Seed | $10M | Feb 2022 |
 Wonderment | Seed | $6M | Jan 2022 |
 Ikigai | Seed | $13M | Dec 2021 |
| Pagos | Seed | $10M | Oct 2021 |
 Lendflow | Series A | $10.8M | Oct 2021 |
 project44 | Series D | $100M | Dec 2020 |
| DDigitalBrain | Seed | $3.4M | Oct 2020 |
 HelloTeam | Seed | $3.5M | Aug 2020 |
 H1 | Series A | $12.9M | Apr 2020 |
 Vested Finance | Seed | $1.2M | Sep 2019 |
 LearnLux | Seed | $2M | Nov 2018 |
 Zaius | Unknown | $30M | Apr 2018 |
 Moltin | Series A | $8M | Feb 2018 |
| Moltin | Series A | $8M | Jan 2018 |
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Top Co-Investors
Stage 2 Capital4 shared
Y Combinator4 shared
Techstars4 shared
Homebrew3 shared
Matrix Partners3 shared
General Catalyst3 shared
Madrona Venture Group3 shared
Activant Capital2 shared
Wing Venture Capital2 shared
Colle Capital2 shared
8VC2 shared
Insight Partners2 shared
Motier Ventures2 shared
Craft Ventures2 shared
FirstMark Capital2 shared
Glasswing Ventures2 shared
New Enterprise Associates2 shared
Frontline Ventures2 shared
Human Ventures2 shared
Acrew Capital2 shared
Last updated: 9 September 2026