Enterprise SoftwareAIDeveloper ToolsInfrastructure & CloudFintechConsumerCybersecurityHealthcareDefense & Space
645 Ventures is an early-stage venture capital firm based in New York, partnering with exceptional founders building iconic technology companies. The firm invests across Enterprise, Deep Tech, AI Infrastructure, Fintech, Consumer, and Cybersecurity at the Seed and Series A stages.
Deal activity increased 100% year-over-year (12 deals in the last 12 months). Average disclosed round size is $34.5M (across 106 rounds with reported amounts).
Portfolio
84
Fund Size
$347M
Top Stage
Series A
Last 12 Mo
12
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
121 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Ellis | Seed | $10M | Jul 2026 |
 Condor Software | Series A | $24M | Mar 2026 |
 Condor Software | Series A | $24M | Mar 2026 |
 UptiQ | Series B | $25M | Feb 2026 |
 Arbor | Pre-Seed | $6.3M | Feb 2026 |
 Arbor | Seed | $6.3M | Feb 2026 |
 Risotto | Seed | $10M | Jan 2026 |
| Condor Software | Series A | $24M | Jan 2026 |
 Variance | Series A | $21.5M | Jan 2026 |
 Pomo | Seed | $4.5M | Jan 2026 |
 Variance | Series A | $21.5M | Jan 2026 |
| Condor Software | Series A | $24M | Jan 2026 |
 Sequence | Series B | — | Dec 2025 |
 Forterra | Growth | — | Nov 2025 |
 Clerq | Series A | $21M | Oct 2025 |
| SStrella | Series A | $14M | Oct 2025 |
 Shift5 | Series C | $75M | Sep 2025 |
| Forterra | Series C | $238M | May 2025 |
 True Anomaly | Series C | — | Apr 2025 |
 Shop Circle | Series B | $60M | Feb 2025 |
 Edera | Series A | $15M | Feb 2025 |
 Circeus | Series B | $60M | Feb 2025 |
 Sequence | Series A | $20M | Jan 2025 |
 Sekai | Seed | $6M | Jan 2025 |
| Edera | Seed | $5M | Sep 2024 |
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Top Co-Investors
Y Combinator24 shared
QED Investors11 shared
Vesta Ventures7 shared
NextView Ventures6 shared
Insight Partners6 shared
General Catalyst6 shared
Eniac Ventures6 shared
Menlo Ventures6 shared
Andreessen Horowitz6 shared
Fifth Wall5 shared
NFX5 shared
500 Global5 shared
Afore Capital5 shared
ACME Capital5 shared
Accel5 shared
Narya5 shared
Eclipse5 shared
Green Visor Capital5 shared
Hedosophia4 shared
Moore Strategic Ventures4 shared
Last updated: 27 September 2026