Startup · United States
Arkenstone Defense
HQ Menlo Park, United StatesFounded 2025
Back-office platform for defense-technology companies covering compliance, accreditation, contracting support, payroll and HR.
Funding1 round · $35.0M
- Disclosed
- $35.0M
- Latest
- $35.0MSeed · Jul 7, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Jul 7, 2026 | Seed | $35.0M | — | J2 Ventures | — | Reported |
- SeedLed by J2 Ventures$35.0MJul 7, 2026
Totals add known amounts using recorded USD conversions where available; other currencies are shown separately. A ~ marks an estimated amount.
Sources4
Profile3
- 1Regulatory filingArkenstone Defense, Inc. Form D filing index
Supports Organization · country, Organization · hq city
“Business Address 800 EL CAMINO REAL MENLO PARK CA 94025”
- 2
Supports Organization · hq city
“Corporate Office - 800 El Camino Real - Suite 200 - Menlo Park, CA 94025 - United States”
- 3Regulatory filingArkenstone Defense, Inc. Form D (2025-07-29)
Supports Organization · founded year
“<yearOfInc> <withinFiveYears>true</withinFiveYears> <value>2025</value>”
Funding1
- 4
Tectonic · Jul 7, 2026 · Supports Funding round · amount, Organization, Role
“Arkenstone Defense emerged from stealth with $35M in seed funding led by J2 Ventures to build defense tech’s back office”
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