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 100% year-over-year (4 deals in the last 12 months). Their most common stage is seed (46% of deals). Average disclosed round size is $14.1M (across 45 rounds with reported amounts).
Portfolio
38
Fund Size
$58M
Top Stage
Seed
Last 12 Mo
4
Team
John Pearce
Partner Emeritus
Brian Fakhoury
Investment Analyst
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
48 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Transfyr | Seed | $25M | Aug 2026 |
 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 |
 DigitalBrain | Series A | $16M | Jun 2022 |
 Goldcast | Seed | $10M | Feb 2022 |
 Wonderment | Seed | $6M | Jan 2022 |
 Ikigai Labs | Seed | $13M | Dec 2021 |
| Pagos | Seed | $10M | Oct 2021 |
 Lendflow | Series A | $10.8M | Oct 2021 |
 Project44 | Series D | $100M | Dec 2020 |
| DigitalBrain | Seed | $3.4M | Oct 2020 |
 HelloTeam | Seed | $3.5M | Aug 2020 |
 H1 | Series A | $12.9M | Apr 2020 |
 H1 | Series B | $12.9M | Apr 2020 |
 Vested Finance | Seed | $1.2M | Sep 2019 |
 LearnLux | Seed | $2M | Nov 2018 |
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Top Co-Investors
Y Combinator8 shared
General Catalyst7 shared
Stage 2 Capital5 shared
Techstars5 shared
Homebrew4 shared
Wing Venture Capital3 shared
Matrix Partners3 shared
Motier Ventures3 shared
Craft Ventures3 shared
Stanford's StartX Fund2 shared
Activant Capital2 shared
Path Ventures2 shared
Colle Capital2 shared
Baron Davis Enterprises2 shared
Menlo Ventures2 shared
Liquid 2 Ventures2 shared
8VC2 shared
Insight Partners2 shared
U.S. Venture Partners2 shared
FirstMark Capital2 shared
Last updated: 7 October 2026