Castelion valuation, funding and investors
Castelion works in defense technology research and development, based in Torrance, United States. Founded in 2023, it has about 254 employees.
- Last round
- Series C · $1.00B · Aug 2026
- Valuation at last round
- $13.00B
- Headcount
- 254 · growing
- Grade
- A
- Founded
- 2023
Castelion valuation today
VCMC values Castelion at $13.6B today, with a range of $11.3B to $19.4B and a grade of A. The valuation starts from its last funding round, a Series C round in Aug 2026.
Valuation by date (52 rows)
Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.
| Date | Valuation | Range | Predicted in 1 yr | Phase | Headcount | Trend | Grade | Winding-down probability |
|---|---|---|---|---|---|---|---|---|
| 1 Jan 2023 | $22.1M | $8.05M – $60.7M | $24.1M (+9%) | before first round | – | unknown | D | 0% |
| 1 Feb 2023 | $22.3M | $8.11M – $61.2M | $24.3M (+9%) | before first round | – | unknown | D | 0% |
| 1 Mar 2023 | $22.4M | $8.16M – $61.6M | $24.5M (+9%) | before first round | – | unknown | D | 0% |
| 1 Apr 2023 | $38.6M | $25.3M – $117M | $77.1M (+100%) | after a round | – | unknown | C | 0% |
| 2 Apr 2023 | $38.6M | $25.3M – $117M | $77.1M (+100%) | after a round | – | unknown | C | 0% |
| 1 May 2023 | $40.8M | $25.3M – $117M | $77.1M (+89%) | after a round | – | unknown | C | 0% |
| 1 Jun 2023 | $43.3M | $25.3M – $117M | $77.1M (+78%) | after a round | – | unknown | C | 0% |
| 1 Jul 2023 | $45.8M | $25.3M – $117M | $77.1M (+68%) | after a round | – | unknown | C | 0% |
| 1 Aug 2023 | $48.6M | $25.3M – $117M | $77.1M (+59%) | after a round | – | unknown | C | 0% |
| 1 Sep 2023 | $51.6M | $25.3M – $117M | $77.1M (+50%) | after a round | – | unknown | C | 0% |
| 1 Oct 2023 | $54.6M | $25.3M – $117M | $77.1M (+41%) | after a round | 8 | unknown | C | 0% |
| 6 Oct 2023 | $77.3M | $54.4M – $219M | $154M (+100%) | after a round | 8 | unknown | C | 0% |
| 1 Nov 2023 | $81.2M | $54.4M – $219M | $154M (+90%) | after a round | 8 | unknown | C | 0% |
| 1 Dec 2023 | $86.0M | $54.4M – $219M | $154M (+79%) | after a round | 8 | unknown | C | 0% |
| 1 Jan 2024 | $91.2M | $54.4M – $219M | $154M (+69%) | after a round | 8 | unknown | C | 0% |
| 1 Feb 2024 | $96.7M | $54.4M – $219M | $154M (+60%) | after a round | 8 | unknown | C | 0% |
| 1 Mar 2024 | $111M | $67.3M – $271M | $191M (+71%) | after a round | 21 | growing | C | 0% |
| 1 Apr 2024 | $120M | $67.3M – $271M | $191M (+59%) | after a round | 21 | growing | C | 0% |
| 1 May 2024 | $130M | $67.3M – $271M | $191M (+47%) | after a round | 21 | growing | C | 0% |
| 1 Jun 2024 | $140M | $67.3M – $271M | $191M (+36%) | after a round | 21 | growing | C | 0% |
| 1 Jul 2024 | $151M | $67.3M – $271M | $191M (+27%) | after a round | 21 | growing | C | 0% |
| 1 Aug 2024 | $176M | $73.8M – $297M | $209M (+19%) | after a round | 32 | growing | C | 0% |
| 1 Sep 2024 | $191M | $73.8M – $297M | $209M (+10%) | after a round | 32 | growing | C | 0% |
| 1 Oct 2024 | $208M | $73.8M – $297M | $209M (+1%) | after a round | 32 | growing | C | 0% |
| 1 Nov 2024 | $219M | $77.4M – $310M | $219M (0%) | after a round | 39 | growing | C | 0% |
| 1 Dec 2024 | $219M | $77.7M – $310M | $219M (0%) | after a round | 39 | growing | C | 0% |
| 1 Jan 2025 | $219M | $78.0M – $310M | $219M (0%) | after a round | 39 | growing | C | 0% |
| 30 Jan 2025 | $332M | $233M – $845M | $596M (+80%) | after a round | 39 | growing | C | 0% |
| 1 Feb 2025 | $333M | $233M – $845M | $596M (+79%) | after a round | 39 | growing | C | 0% |
| 1 Mar 2025 | $348M | $233M – $845M | $596M (+71%) | after a round | 39 | growing | C | 0% |
| 1 Apr 2025 | $366M | $233M – $845M | $596M (+63%) | after a round | 39 | growing | C | 0% |
| 1 May 2025 | $384M | $233M – $845M | $596M (+55%) | after a round | 39 | growing | C | 0% |
| 1 Jun 2025 | $403M | $233M – $845M | $596M (+48%) | after a round | 39 | growing | C | 0% |
| 1 Jul 2025 | $423M | $233M – $845M | $596M (+41%) | after a round | 39 | growing | C | 0% |
| 1 Aug 2025 | $488M | $280M – $1.0B | $714M (+46%) | after a round | 89 | growing | C | 0% |
| 1 Sep 2025 | $529M | $288M – $1.0B | $735M (+39%) | after a round | 101 | growing | C | 0% |
| 1 Oct 2025 | $565M | $288M – $1.0B | $735M (+30%) | after a round | 101 | growing | C | 0% |
| 1 Nov 2025 | $620M | $298M – $1.1B | $760M (+23%) | after a round | 118 | growing | C | 0% |
| 1 Dec 2025 | $664M | $298M – $1.1B | $760M (+14%) | after a round | 118 | growing | C | 0% |
| 6 Dec 2025 | $1.6B | $1.1B – $3.5B | $2.4B (+50%) | after a round | 118 | growing | B | 0% |
| 1 Jan 2026 | $1.7B | $1.1B – $3.5B | $2.4B (+46%) | after a round | 135 | growing | B | 0% |
| 1 Feb 2026 | $1.7B | $1.2B – $3.6B | $2.5B (+43%) | after a round | 150 | growing | B | 0% |
| 1 Mar 2026 | $1.8B | $1.2B – $3.6B | $2.5B (+39%) | after a round | 150 | growing | B | 0% |
| 1 Apr 2026 | $1.9B | $1.2B – $3.6B | $2.5B (+34%) | after a round | 150 | growing | B | 0% |
| 1 May 2026 | $2.0B | $1.2B – $3.7B | $2.6B (+32%) | after a round | 174 | growing | B | 0% |
| 1 Jun 2026 | $2.0B | $1.2B – $3.7B | $2.6B (+27%) | after a round | 174 | growing | B | 0% |
| 1 Jul 2026 | $2.1B | $1.2B – $3.7B | $2.6B (+22%) | after a round | 174 | growing | B | 0% |
| 1 Aug 2026 | $2.3B | $1.3B – $3.8B | $2.7B (+19%) | after a round | 209 | growing | B | 0% |
| 20 Aug 2026 | $13.0B | $11.3B – $19.4B | $16.9B (+30%) | after a round | 209 | growing | A | 0% |
| 1 Sep 2026 | $13.1B | $11.3B – $19.4B | $16.9B (+29%) | after a round | 209 | growing | A | 0% |
| 1 Oct 2026 | $13.4B | $11.3B – $19.4B | $16.9B (+26%) | after a round | 254 | growing | A | 0% |
| 24 Oct 2026 | $13.6B | $11.3B – $19.4B | $16.9B (+24%) | after a round | 254 | growing | A | 0% |
Key facts about Castelion
- Founded
- 2023
- Headquarters
- Torrance, United States
- Employees
- about 254 +151% in a year
- Total raised
- $1.44B
- Funding rounds
- 5
- Last round
- Series C Aug 2026
Castelion was founded in 2023 by Andrew Kreitz, Bryon Hargis and Sean Pitt.
Castelion funding history
Castelion has 5 funding rounds on record, from Apr 2023 to Aug 2026, $1.44B in total. The latest disclosed valuation is $13.00B post-money (Series C, Aug 2026).
Series C 19 Aug 2026
Led by J.P. MorganChase’s Strategic Investment Group, Andreessen Horowitz, Carlyle, JPMorgan Chase; with Lightspeed Venture Partners, Lavrock Ventures, Altimeter, General Catalyst, Interlagos, T. Rowe Price Associates, Inc.
Sources: castelion.com, techcrunch.com, qz.com
$1.00B
$13.00B post-money
Series B 5 Dec 2025
Led by Altimeter, Lightspeed Venture Partners; with Lavrock Ventures, Andreessen Horowitz, General Catalyst, First In, Space VC, Cantos, BlueYard, Avenir, Champion Hill Ventures, Interlagos.
Sources: castelion.com, prnewswire.com, designdevelopmenttoday.com and 1 more
$350M
Series A 29 Jan 2025
Led by Lightspeed Venture Partners; with Andreessen Horowitz, Lavrock Ventures, Cantos, First In, BlueYard, Interlagos.
Sources: castelion.com, castelion.com
$70M
Seed 5 Oct 2023
Led by Andreessen Horowitz, Lavrock Ventures; with First In, BlueYard, Champion Hill Ventures.
Sources: wsgr.com
$14M
Pre-Seed 1 Apr 2023
Led by Lavrock Ventures.
$5.4M
Castelion investors
16 investors have backed Castelion; Lavrock Ventures, Andreessen Horowitz and Lightspeed Venture Partners and 4 more led at least one round.
- Andreessen Horowitz lead, 4 rounds
- Lightspeed Venture Partners lead, 3 rounds
- Altimeter lead, 2 rounds
- Carlyle lead
- J.P. MorganChase’s Strategic Investment Group lead
- JPMorgan Chase lead
- Interlagos 3 rounds
- General Catalyst 2 rounds
- T. Rowe Price Associates, Inc
What Castelion does
Castelion works in aerospace and defence, with 10 recorded offerings and customers in defense.
Castelion Corporation is an American defense technology company engaged in the design, testing, and manufacturing of military systems, with a primary focus on hypersonic weapons. The company operates a solid rocket motor manufacturing facility and is involved in rapid prototyping and vertical integration within the defense sector. Castelion also engages in cybersecurity-related activities and holds multiple SBIR contracts and awards from the U.S. Army and U.S. Navy.
Description from Veridion's company data.
Products and services
- Defense Technology Research and Development
- Hypersonic Weapon System Design and Manufacturing
- Solid Rocket Motor Manufacturing
- Defense Hardware Prototyping and Testing
- Rapid Defense System Iteration
- Scalable Defense Manufacturing
- Defense Systems Integration Services
- Aerospace Engineering Services
- Cybersecurity Solutions for Defense Systems
- National Security Solutions Development
Markets
- Defense
Technology
- Hypersonic Weapons Technology
- Solid Rocket Motor Manufacturing
Business model
- Business-to-Business
- Manufacturing
- Enterprise
Industry codes (NAICS)
- 336414 Guided Missile and Space Vehicle Manufacturing 100% match
Questions about Castelion
What is Castelion worth?
Valuation $13.6B (range $11.3B to $19.4B), as of 24 Oct 2026. The last disclosed valuation was $13.00B (Series C, Aug 2026).
Has Castelion raised money?
Castelion has 5 funding rounds on record, from Apr 2023 to Aug 2026, $1.44B in total. The latest disclosed valuation is $13.00B post-money (Series C, Aug 2026).
Who has invested in Castelion?
Lavrock Ventures, Andreessen Horowitz, Lightspeed Venture Partners, Altimeter, Carlyle and J.P. MorganChase’s Strategic Investment Group, and 10 more. Lead investors include Lavrock Ventures, Andreessen Horowitz, Lightspeed Venture Partners and Altimeter.
How many people work at Castelion?
About 254, up 151% over the last year. Headcount grew from 8 in Oct 2023 to 254 in Sep 2026.
What does Castelion do?
Castelion works in aerospace and defence, with 10 recorded offerings and customers in defense. Its main offerings are defense technology research and development, hypersonic weapon system design and manufacturing and solid rocket motor manufacturing.
When was Castelion founded, and where is it based?
Castelion was founded in 2023 and is based in Torrance, United States. It has about 254 employees, up 151% over the last year.