FUNDING
Key Metrics
Valuation
$13B
As of Sep 4, 2026Value Add Pulse research
Total funding
$1B+ (incl. $250M credit facility)
As of Sep 4, 2026Value Add Pulse research
Company Snapshot
Castelion is a Defense company, based in Torrance, California, USA, founded 2023 by Bryon Hargis, Sean Pitt, Andrew Kreitz. Latest valuation $13B (As of Sep 4, 2026, Value Add Pulse research). Total funding $1B+ (incl. $250M credit facility) (As of Sep 4, 2026).
Recent changes
- Aug 20, 2026Aug 20, 2026Castelion Hits $13B Value on $1B Hypersonic Missile Round Pulse story
- Aug 20, 2026Aug 20, 2026Castelion Hits $13B Valuation to Mass-Produce Missiles Pulse story
- Aug 19, 2026Aug 19, 2026Raised $1B ($800M equity + $250M revolving credit facility) Series C at a $13B valuation Castelion
- Aug 19, 2026Aug 19, 2026First reported valuation: $13B Castelion
- Aug 19, 2026Aug 19, 2026First reported total funding: $1.35B+Estimated Castelion
Earlier changes (10)
- Aug 19, 2026Aug 19, 2026New investor: T. Rowe Price Castelion
- Aug 19, 2026Aug 19, 2026New investor: Carlyle Group Castelion
- Dec 5, 2025Dec 5, 2025Raised $350M Series B Castelion
- Dec 5, 2025Dec 5, 2025New investor: General Catalyst Castelion
- Dec 5, 2025Dec 5, 2025New investor: Andreessen Horowitz Castelion
- Dec 5, 2025Dec 5, 2025New investor: Lavrock Ventures Castelion
- Dec 5, 2025Dec 5, 2025New investor: Lightspeed Venture Partners Castelion
- Dec 5, 2025Dec 5, 2025New investor: Interlagos Castelion
- Dec 5, 2025Dec 5, 2025New investor: BlueYard Capital Castelion
- Dec 5, 2025Dec 5, 2025New investor: Altimeter Capital Castelion
Funding History
2 events · sources dated per row| Date | Event | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| Aug 19, 2026 | Series C | $1B ($800M equity + $250M revolving credit facility) | $13B | Andreessen HorowitzCarlyle GroupLightspeed Venture PartnersLavrock VenturesAltimeter CapitalGeneral CatalystInterlagosT. Rowe PriceJPMorgan Chase Strategic Investment Group outlined = lead | Castelion |
| Dec 5, 2025 | Series B | $350M | — | Altimeter CapitalLightspeed Venture PartnersLavrock VenturesAndreessen HorowitzGeneral CatalystFirst InBlueYard CapitalInterlagosSpace VCCantosAvenirChampion Hill outlined = lead | Castelion |
Underlying values
| As of | Value | Method | Source |
|---|---|---|---|
| Sep 4, 2026 | $13B | Reported | Value Add Pulse research |
| Aug 19, 2026 | $13B | Reported | Castelion |
Investors
Latest Pulse
- Sep 8, 2026Hardware Is Getting Software's Round Sizes NowStoke Space's $1 billion round joins Castelion's $1.05 billion and Atoms' $1.7 billion as capital-intensive physical-hardware startups now command the round sizes and speed that used to be reserved for software.→
- Sep 8, 2026Defense Tech's Record Year Is Concentrating, Not BroadeningDefense tech has already topped 2025's full-year funding record with four months left in 2026, but deal volume is barely up -- the dollars are concentrating into fewer, larger rounds led by Anduril and Castelion.→
- Sep 2, 2026August's Megarounds Went to Missiles and InferenceIn a single mid-August week, six US startups raised $2.63 billion between them, and the two largest -- a hypersonic missile maker and an inference chip company -- accounted for $1.5 billion of it.→
- Aug 31, 2026Defense Tech's $35.6 Billion Year, By the CompsAnduril at $61 billion, Castelion at $13 billion, True Anomaly at $600 million raised -- the named rounds behind defense tech's $35.6 billion year explain what's actually driving the category better than the aggregate number does.→
- Aug 29, 2026Physical AI Is Out-Raising the Model Layer This MonthNamed August rounds for chips, energy and defense hardware -- Castelion, Etched, Groq and Base Power -- total more than $3.2 billion, versus roughly $1.1 billion for consumer and enterprise AI application startups covered on Pulse the same month.→
- Aug 21, 2026The Defense-Space IPO Ladder, By the NumbersThis 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.→
- Aug 21, 2026Why I'm Wary of This Week's Pre-Revenue IPO RushGravitics is reaching Nasdaq with zero revenue via reverse merger the same week Castelion raised private capital at 26x contracted revenue -- a pattern worth pushing back on before it becomes the default path for hardware startups.→
- Aug 20, 2026August's AI Infrastructure Deals Already Top $8.7BDatabricks' $5B raise, Firmus' $2B round, Castelion's $1B Series C and Etched's $700M add up to $8.7B in AI infrastructure and adjacent capital-intensive funding in August alone.→
- Aug 20, 2026Castelion Hits $13B Value on $1B Hypersonic Missile RoundCastelion, the hypersonic-missile startup founded by former SpaceX executives, raised a $1B Series C co-led by Andreessen Horowitz, Carlyle and JPMorgan Chase at a $13B valuation, more than double its prior mark.→
- Aug 20, 2026Castelion Hits $13B Valuation to Mass-Produce MissilesDefense startup Castelion raised a $1B Series C co-led by Andreessen Horowitz, Carlyle and JPMorgan at a $13B valuation to mass-produce hypersonic missiles in New Mexico, as the Pentagon races to close a stockpile gap with China.→
Coverage Timeline
newest first- Sep 8, 2026FUNDINGHardware Is Getting Software's Round Sizes Now→
- Sep 8, 2026FUNDINGDefense Tech's Record Year Is Concentrating, Not Broadening→
- Sep 2, 2026FUNDINGAugust's Megarounds Went to Missiles and Inference$2.63B in a week→
- Aug 31, 2026FUNDINGDefense Tech's $35.6 Billion Year, By the Comps$35.6B YTD (+40%)→
- Aug 29, 2026FUNDINGPhysical AI Is Out-Raising the Model Layer This Month→
- Aug 21, 2026IPOThe Defense-Space IPO Ladder, By the Numbers→
- Aug 21, 2026IPOWhy I'm Wary of This Week's Pre-Revenue IPO Rush→
- Aug 20, 2026FUNDINGAugust's AI Infrastructure Deals Already Top $8.7B→
- Aug 20, 2026FUNDINGCastelion Hits $13B Value on $1B Hypersonic Missile Round$1B Series C at $13B→
- Aug 20, 2026IPOCastelion Hits $13B Valuation to Mass-Produce Missiles$1B Series C at $13B→
All Coverage
FUNDING
Hardware Is Getting Software's Round Sizes Now
Stoke Space's $1 billion round joins Castelion's $1.05 billion and Atoms' $1.7 billion as capital-intensive physical-hardware startups now command the round sizes and speed that used to be reserved for software.
DEEP DIVE
FUNDING
Defense Tech's Record Year Is Concentrating, Not Broadening
FUNDING
Defense Tech's Record Year Is Concentrating, Not Broadening
Defense tech has already topped 2025's full-year funding record with four months left in 2026, but deal volume is barely up -- the dollars are concentrating into fewer, larger rounds led by Anduril and Castelion.
DEEP DIVE
FUNDING
August's Megarounds Went to Missiles and Inference
FUNDING$2.63B in a week
August's Megarounds Went to Missiles and Inference
In a single mid-August week, six US startups raised $2.63 billion between them, and the two largest -- a hypersonic missile maker and an inference chip company -- accounted for $1.5 billion of it.
BY THE NUMBERS
FUNDING
Defense Tech's $35.6 Billion Year, By the Comps
FUNDING$35.6B YTD (+40%)
Defense Tech's $35.6 Billion Year, By the Comps
Anduril at $61 billion, Castelion at $13 billion, True Anomaly at $600 million raised -- the named rounds behind defense tech's $35.6 billion year explain what's actually driving the category better than the aggregate number does.
DEEP DIVE
FUNDING
Physical AI Is Out-Raising the Model Layer This Month
FUNDING
Physical AI Is Out-Raising the Model Layer This Month
Named August rounds for chips, energy and defense hardware -- Castelion, Etched, Groq and Base Power -- total more than $3.2 billion, versus roughly $1.1 billion for consumer and enterprise AI application startups covered on Pulse the same month.
BY THE NUMBERS
IPO
The Defense-Space IPO Ladder, By the Numbers
IPO
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
IPO
Why I'm Wary of This Week's Pre-Revenue IPO Rush
IPO
Why I'm Wary of This Week's Pre-Revenue IPO Rush
Gravitics is reaching Nasdaq with zero revenue via reverse merger the same week Castelion raised private capital at 26x contracted revenue -- a pattern worth pushing back on before it becomes the default path for hardware startups.
TRACE'S TAKE
FUNDING
August's AI Infrastructure Deals Already Top $8.7B
FUNDING
August's AI Infrastructure Deals Already Top $8.7B
Databricks' $5B raise, Firmus' $2B round, Castelion's $1B Series C and Etched's $700M add up to $8.7B in AI infrastructure and adjacent capital-intensive funding in August alone.
BY THE NUMBERS
FUNDING
Castelion Hits $13B Value on $1B Hypersonic Missile Round
FUNDING$1B Series C at $13B
Castelion Hits $13B Value on $1B Hypersonic Missile Round
Castelion, the hypersonic-missile startup founded by former SpaceX executives, raised a $1B Series C co-led by Andreessen Horowitz, Carlyle and JPMorgan Chase at a $13B valuation, more than double its prior mark.
DEEP DIVE
IPO
Castelion Hits $13B Valuation to Mass-Produce Missiles
IPO$1B Series C at $13B
Castelion Hits $13B Valuation to Mass-Produce Missiles
Defense startup Castelion raised a $1B Series C co-led by Andreessen Horowitz, Carlyle and JPMorgan at a $13B valuation to mass-produce hypersonic missiles in New Mexico, as the Pentagon races to close a stockpile gap with China.
DEEP DIVE
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Sources & methodologyshow
Where these figures come from
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.