Socii Capital is an early-stage venture capital firm that partners with bold, mission-driven entrepreneurs building next-generation software-enabled digital infrastructure companies. The firm runs a highly concentrated portfolio strategy, writing a limited number of lead checks and maintaining deep, lasting relationships with founders.
Their most common stage is series-a (56% of deals). Average disclosed round size is $16.3M (across 7 rounds with reported amounts).
Portfolio
9
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Team
LF
Leigh Fogelman
Co-Founding Partner
YC
Yuan Chen
Co-Founding Partner and CEO
SM
Simon Mahony
Partner
JB
Jack Blyzinskyj
Principal
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
9 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Numeric | Series A | $28M | Oct 2024 |
 Building Radar | Unknown | — | Oct 2024 |
 Ship Angel | Unknown | $5M | Jan 2024 |
 ShipAngel | Unknown | $5M | Jan 2024 |
 Standard Metrics | Series A | $23.7M | Feb 2022 |
 LENDTABLE | Series A | $18M | Jan 2021 |
| GGolden Recursion | Series A | $14.5M | Sep 2020 |
| VVellum AI | Series A | $20M | — |
| KKope | Seed | — | — |
Top Co-Investors
8VC2 shared
Y Combinator2 shared
Glasswing Ventures2 shared
Bienville Capital2 shared
Long Journey Ventures1 shared
Menlo Ventures1 shared
Friends & Family Capital1 shared
Institutional Venture Partners1 shared
Access Industries1 shared
Fifth Down Capital1 shared
Founders Fund1 shared
The Slack Fund1 shared
Not Boring Capital1 shared
Gaingels1 shared
First Trust Capital Partners1 shared
Alpha Edison1 shared
January Capital1 shared
Spark Capital1 shared
Fin Capital1 shared
Streamlined Ventures1 shared
Last updated: 8 September 2026