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Company pair · Aerospace & Defense
VS

Allen Control Systems vs Castelion

Aerospace & Defense Both private US-headquartered No Canborsa market

Allen Control Systems and Castelion are often weighed against each other in aerospace-defense.

On this pageSide by sideValuation marksWhat each disclosesVerdictFAQ
CastelionPRIVATE · US
VS
Last valuation$2.2B$2.8B
Basis Post-money Post-money
Founded20182022
Employees≈201≈225
On CanborsaNo marketNo market
At a glance
$2.2B
Allen Control SystemsPost-money, Series B · May 2026
$2.8B
CastelionPost-money, Series B
1.27×
GapBoth post-money
0 of 2
On CanborsaNeither company has a market
VS
Head-to-head · field by field

Allen Control Systems vs Castelion — side by side

Field
Allen Control SystemsPRIVATE · FOUNDED 2018
CastelionPRIVATE · FOUNDED 2022
VS
Last valuation
$2.2B Post-money
$2.8B Post-money
Valuation basis
Post-money
Post-money
Latest round
Series B
Series B
Round size
$200M
$350M
Named investors
Smash Capital Craft Ventures Rally Ventures Inspired Capital
Lightspeed Venture Partners Andreessen Horowitz Altimeter Capital
Founded
2018
2022
Employees (est.)
≈201
≈225
Sector & HQ
Defense Technology · 🇺🇸 US
Aerospace & Defense · 🇺🇸 US
Status & market
Private — no Canborsa market
Private — no Canborsa market
Valuation · both companies on one scale

Valuation marks

Each bar is the last disclosed mark — $2.2B for Allen Control Systems (post-money, May 2026) and $2.8B for Castelion (post-money).

$2.2BPost-money · May 2026
Castelion
$2.8BPost-money · undated
ALLEN CONTROL SYSTEMS · $2.2B · MAY 2026CASTELION · $2.8B · UNDATED
Allen Control Systems vs Castelion · what each company discloses

What each company discloses, and what it leaves out

Allen Control SystemsPRIVATEAerospace & Defense · US · 2018
+Last disclosed mark $2.2B — post-money, May 2026.
+Founded 2018 .
+≈201 employees.
+Latest round: Series B, $200M raised, led by Smash Capital.
CastelionPRIVATEAerospace & Defense · US · 2022
+Last disclosed mark $2.8B — post-money.
+Founded 2022 .
+≈225 employees.
+Latest round: Series B, $350M raised.
+
Verdict

Verdict

The $2.2B tells you…
What an investor paid for newly issued shares — a primary round, priced post-money.
How much capital arrived with it:$200M, led by Smash Capital in May 2026.
A dated print: it moves only when a newer round is announced.
The $2.8B tells you…
What an investor paid for newly issued shares — a primary round, priced post-money.
How much capital arrived with it:$350M.
A dated print: it moves only when a newer round is announced.

Both marks are post-money, so 1.27× compares like with like. Both are private: there is no public quote and no Canborsa market on either name.

Frequently asked questions

What sector is Allen Control Systems in compared to Castelion?›

Allen Control Systems operates in Defense Technology, and Castelion operates in Aerospace & Defense.

How do Allen Control Systems and Castelion compare in valuation?›

Allen Control Systems is valued at $2.2B, and Castelion at $2.8B.

How much capital have Allen Control Systems and Castelion raised in total?›

Allen Control Systems has raised $242M in total; Castelion has raised $434.2M.

Who are the lead investors in Allen Control Systems and Castelion?›

Allen Control Systems' lead investors include Smash Capital, and Castelion's include JPMorganChase Strategic Investment Group and Andreessen Horowitz.

How old are Allen Control Systems and Castelion?›

Allen Control Systems was founded in 2018, and Castelion was founded in 2022.

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