About Aventra
Aventra makes Piranha, a glider that a high-altitude balloon carries up and drops. The glider flies to its target and can carry a warhead or other payloads such as electronic warfare gear. The kit gives a low cost per unit. Balloon and glide together give it a range of 1000 km, with a launch height of 80,000 feet to get past air defenses.
Aventra Defense Systems, Inc. is based in Herndon, Virginia. It was founded in 2025 by former Army officers Michael Weigand, Brian Retherford and Jessup Meng. Weigand is co-founder and chief executive officer. Piranha flew 400 flights and was evaluated by the U.S. Army at the Arcane Thunder 26 exercise. It announced a $3 million seed round in October 2025 and $17.5 million in October 2026.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Jun 30, 2025 | Nov 2, 2026 | $3,000,111of $3.0M target | 9 | $333K | EquityRule 506(b) | Form D ↗ |
| Jun 2, 2026 | Nov 2, 2026 | $12,499,977fully sold | 9 | $1.3M | EquityRule 506(b) | Form D ↗ |
| Total, two offerings | $15,500,088 | |||||
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Rounds announced by Aventra
What the company said publicly about its funding. Announced amounts can differ from Form D figures: an announcement can combine several closings, and some money is raised without a Form D.
| Announced | Round | Amount | Investors | Source |
|---|---|---|---|---|
| Oct 1, 2025 | Seed | $3M | Lavrock Ventures (lead) | Press release ↗ |
| Oct 6, 2026 | Strategic round | $17.5M | Konvoy (lead), Lavrock Ventures, Booz Allen Ventures, Sands Capital, Langford Industries, Western Alliance Bank (funding facility) | Press release ↗ |
Why Investors Backed Aventra
Aventra sells Piranha, a low-cost glider that a high-altitude balloon carries up and drops for long-range strikes. Investors put money in because Aventra's case is that it can deliver precision effects at a fraction of the cost of standard long-range munitions. Konvoy led a $17.5 million round in October 2026. Lavrock Ventures led the earlier $3 million seed round.
The problem it targets
Aventra's case is that a long war would use up cruise missile stocks within days. Forces then lack the steady fires needed to deny an enemy the use of airfields, ports and other key sites.
What the product does
Piranha is a balloon-dropped glider that flies to its target. A balloon takes it to 80,000 feet, and the balloon and glide together give a range of 1000 km. It can carry a warhead or other payloads for sensing, electronic warfare and communications. Its AI-guided final attack does not need GPS.
Progress so far
Piranha went into operators' hands at the U.S. Army's Arcane Thunder 26 exercise. The system flew 400 flights, won its first delivery contracts, and went from concept to deployment overseas in under a year. The new money is meant to move Piranha from field-test quantities to low-rate initial production at its Herndon plant.
Who backs it
Konvoy led the $17.5 million round. Lavrock Ventures, which led the $3 million seed round, took part again. New investors are Booz Allen Ventures, Sands Capital and Langford Industries. Western Alliance Bank provided a funding facility.
How the market is moving
Aventra's October 2026 release frames the announcement as coming in a year of record investment in alternative defense technologies. The Pentagon has kept its focus on affordable mass and has directed a faster scale-up of low-cost autonomous systems made in the U.S.
We wrote this summary from public statements by Aventra and its investors. It is not investment advice.
Aventra in the News
Leadership Team
Executive officers and directors listed on Aventra's Form D filed Nov 2, 2026.
