Third Prime is an early-stage venture capital firm based in New York and Nashville, founded in 2016. The firm focuses on 'real-economy infrastructure' verticals — fintech, proptech, and crypto/blockchain — backing entrepreneurs at the seed and Series A stages.
39% of their portfolio is in Fintech. Deal activity decreased year-over-year (1 deal in the last 12 months vs 5 prior). Average disclosed round size is $16.9M (across 67 rounds with reported amounts).
Portfolio
51
Fund Size
—
Top Stage
Series A
Last 12 Mo
1
Team
JA
Jeff Adelson-Yan
...
SP
Steve Parker, Jr.
...
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
71 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Inspiren | Series B | $100M | Sep 2025 |
 Alternative Payments | Unknown | $22M | Apr 2025 |
| Inspiren | Series A | $35M | Mar 2025 |
 Twentyeight Health | Series A | — | Jan 2025 |
 First Resonance | Unknown | — | Dec 2024 |
 Yellow Card | Series C | $33M | Oct 2024 |
 Galleon | Pre-Seed | $1.5M | Apr 2024 |
 Sonarverse | Seed | $7M | Mar 2024 |
| JJanuar ApS | Seed | $1.6M | Feb 2024 |
 Medallion | Series A | $13.7M | Dec 2023 |
 Salt Labs | Seed | $8M | Dec 2023 |
 AbbeyCross | Seed | $6.5M | Dec 2023 |
 Acctual | Seed | $3.9M | Nov 2023 |
 Finerio Connect | Unknown | $6.5M | Oct 2023 |
 Kafene | Series B | $12.6M | Oct 2023 |
 Monite | Seed | $5M | Mar 2023 |
 Finerio | Unknown | $6.5M | Jan 2023 |
| FFairplay | Seed | $4.5M | Jan 2023 |
 Paywatch | Growth | $9M | Dec 2022 |
 ImmuneFi | Series A | $24M | Sep 2022 |
| Yellow Card | Series B | $57M | Sep 2022 |
| Kafene | Series B | $18M | Sep 2022 |
| AbbeyCross | Pre-Seed | $2.5M | Aug 2022 |
 FairPlay AI | Series A | $10M | Jul 2022 |
| IInflection Points | Series A | $12.6M | Jul 2022 |
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Top Co-Investors
Gaingels11 shared
Valar Ventures8 shared
Fin Capital6 shared
Nevcaut Ventures5 shared
Founders Fund5 shared
Lux Capital4 shared
Primary Venture Partners4 shared
Story Ventures4 shared
Rosecliff4 shared
Nyca Partners4 shared
Winklevoss Capital Management4 shared
Company Ventures4 shared
Coinbase Ventures3 shared
Sequoia Capital3 shared
Polygon Ventures3 shared
CMT Digital3 shared
Portage Ventures3 shared
Y Combinator3 shared
Plug and Play Tech Center3 shared
Zero Infinity Partners3 shared
Last updated: 19 September 2026