Key facts
as of Sep 2026- Epirus’s last known valuation is $1.1B (Mar 2025).
- It has raised $541.3M across 4 recorded rounds; the latest was Later Stage VC (Series D) ($249.8M) in Mar 2025.
- Notable investors include US National Science Foundation, Gaingels, 8VC, Calm Ventures, United States Department of War — 52 tracked in total.
- 1 institutional filer reports fund marks on Epirus across 4 filings.
- Epirus has filed 3 Form Ds with the SEC since 2019, most recently Feb 2022 ($190.8M sold to 35 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 4 rounds
- ·The complete investor list — 52 names
- ·Watchlist + deal alerts for Epirus
Recorded secondary trades
No secondary trades in Epirus shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
1 filers · latest Jun 20261 SEC-registered fund reported 4 fair-value marks on Epirus between Sep 2025 and Jun 2026. Filer-level marks and implied $/share are available to Pro members.
Funding rounds
4 roundsAbout Epirus
Developer of software-defined high-power microwave technology designed to counter unmanned aircraft systems for national security. The company creates solid-state, software-defined directed energy systems that address threats such as drones and other asymmetric technologies to optimize power efficiency in defense and commercial applications, enabling defense organizations to stun drones with a hard reset or knock swarms out of the sky.
- Industry
- Aerospace and Defense
- Sector
- Government and Military
- HQ
- Redondo Beach, CA, United States
- Founded
- 2018
- Employees
- 236
- Website
- epirusinc.com/
- Ownership
- Privately Held (backing)