Illustration for: The Defense-Space IPO Ladder, By the Numbers

The Defense-Space IPO Ladder, By the Numbers

This week's Castelion, Lyntris and Gravitics numbers together show a wide split in how public and private markets are pricing defense and space companies at almost the same moment.

By the Numbers

$1B at $13B
Castelion (private)
$297.5M, below range
Lyntris (public, priced)
$125M target
Gravitics (public, terms set)
$0
Gravitics 6-mo revenue
$500M+
Castelion contracts to date
TC
By the IPO Desk
Edited by Trace Cohen · Early-stage VC & angel · Founder, New York Venture Partners
2 min read
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THE RUNDOWN

1

Three defense-and-space companies set pricing within the same week at wildly different implied multiples: Castelion raised $1B privately at a $13B valuation against $500M+ in contracts (roughly 26x), Lyntris priced its public IPO below range at $17.50 for $297.5M, and Gravitics set terms for a $125M Nasdaq listing against zero disclosed revenue

2

The gap between Castelion's private multiple and Lyntris's public pricing shortfall is the real story: private markets are still paying up aggressively for defense-tech growth stories, while public investors just delivered a below-range price check on a comparable roll-up in the same sector days later

3

Gravitics adds a third data point entirely: a pre-revenue space-infrastructure company reaching Nasdaq via reverse merger rather than a traditional bookbuilt IPO, a structure that trades price discovery for speed

4

Read together, these three prints in one week suggest defense-tech enthusiasm is real but not uniform -- capital is still flowing hardest to private companies with the most direct Pentagon relationships, while public markets are pricing more cautiously on names without an equivalent contract base

TC

The VC Read · Trace's Take

Trace Cohen

A 26x private multiple next to a below-range public print, in the same sector, in the same week, is the diligence gap every defense-tech LP should be pricing into their next fund commitment -- private rounds are still being negotiated on a growth story public markets haven't fully underwritten yet. Founders raising a defense-tech round right now should assume any Castelion-style multiple gets a public-market haircut the moment it has to clear an actual bookbuild, not a private-round negotiation.

Analysis

Three defense-and-space companies priced within days of each other this week, and the spread between them is the clearest numbers-driven read yet on how differently private and public markets are treating the sector right now, per Value Add Pulse's own IPO tracking.

Castelion, the hypersonic-missile startup founded by former SpaceX executives, is still building out its New Mexico manufacturing capacity, but that hasn't slowed its private-market pricing:

  • Round -- $1B Series C, co-led by Andreessen Horowitz, Carlyle and JPMorgan
  • Valuation -- $13B
  • Secured US military contracts -- $500M+
  • Implied multiple -- roughly 26x contracted revenue

That's aggressive private-market pricing by any measure.

Days earlier, Lyntris, a defense-tech roll-up, priced its actual public IPO at $17.50 a share -- below its $19-to-$22 target range -- raising roughly $297.5 million ahead of its NYSE debut. A below-range public print, landing in the same week as Castelion's rich private valuation, is a real-time gut check: public investors did not extend Castelion-level enthusiasm to a comparable defense name once it actually had to clear a bookbuilt IPO process rather than a private round negotiated directly with a small group of investors.

Gravitics adds a third, different data point: a $125 million Nasdaq listing via reverse merger, priced against zero disclosed revenue and a $24.5 million six-month net loss -- reaching public markets through a faster, less price-discovery-intensive structure than either Castelion's private round or Lyntris's traditional IPO used.

What the spread says

The pattern across all three: capital is still flowing hardest toward private companies with the most direct, largest-dollar Pentagon relationships, while public markets are pricing more cautiously on names without an equivalent contract base to point to -- Lyntris's below-range print and Gravitics's zero-revenue reverse-merger path both reflect a public market less willing to extend Castelion's 26x private multiple to companies it can actually vote on with real-time demand. Private investors, negotiating directly and taking a longer view, are still willing to underwrite growth stories public bookbuilding hasn't yet validated at the same multiple.

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Key Sources

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