Belleau Labs
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Hermeus

Growth (Series B-C)

defense-other · Series C+

Seed Signal Score
21/25
Team Strength
4/5
Validation Depth
5/5
Novelty
5/5
Market Timing
5/5
Capital Efficiency
2/5

Funding

$350.0M
Total raised
$350.0M
Last round · April 7, 2026

Description

The defense aviation startup is coming off two successful flight demonstrations, and with the next one, it's aiming to go supersonic.

Validation Signals

funding round

Score Rationale

Hermeus scores exceptionally on validation (massive $350M raise, successful flight demos, clear DoD interest in hypersonic capability) and novelty (unmanned hypersonic flight is a genuine technical frontier with acute military relevance). However, capital efficiency is weak: $350M deployed to reach supersonic demonstration suggests extremely high burn and engineering risk typical of aerospace hardware, raising questions about path to profitability and whether the capital is being deployed optimally relative to milestones.
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