Sunday, November 8, 2026
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Company

Aventra Defense Systems Inc.

Aventra Defense Systems is a defense technology company building autonomous stratospheric and ultra-long-range ISR and precision effects platforms. ↗

HeadquartersHerndon, VA ↗
Founded2025 ↗
FoundersBrian Retherford, founder ↗; Jessup Meng, founder ↗
LeadershipMichael Weigand, co-founder and CEO ↗
OwnershipPrivate; venture-backed ↗; $17.5 million ↗

Products

  • Piranha is Aventra's low-cost, balloon-deployed autonomous precision payload system. ↗
  • Piranha is designed for rapid fielding and employment across ISR, electronic warfare and kinetic mission sets from stratospheric altitudes. ↗
  • Piranha demonstrated autonomous stratospheric reentry, long-range glide and precision kinetic and ISR effects delivery across 400 flights. ↗

Customers

  • Aventra put Piranha into operator hands during the U.S. Army's Arcane Thunder 26 exercise. ↗
  • Aventra has run evaluations, exercises and combat tests of Piranha with additional U.S., allied and partner military units. ↗
  • Aventra has secured its first series of delivery contracts for Piranha, the company says. ↗

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