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How Many Employees Does Castellum Have?
Castellum (CTM) has 53 employees according to LinkedIn, roughly flat (+1.9%) over the past three months. The LinkedIn count includes everyone who lists Castellum as their current employer, so it reflects workforce changes sooner than the 260 reported in Castellum’s most recent official filing.
With 53 employees, Castellum has a smaller workforce than industry peers like Lockheed Martin (114,573) and Boeing (140,269).
Is Castellum Growing or Shrinking?
Employee count is one of the most reliable leading indicators in alternative data: companies tend to hire before they grow and cut before they report weakness. Castellum currently has 1 active job postings. AltIndex feeds Castellum’s headcount into the CTM AI Score alongside job postings, employee business outlook, and 20+ other signals.
For more on Castellum’s workforce, see its job postings, employee business outlook, and employee ratings. For a demand-side read, see Castellum web traffic.
Month over Month
| Sep 2026 | 53 | |
| Aug 2026 | 52 | |
| Jul 2026 | 52 | |
| Jun 2026 | 53 | |
| May 2026 | 50 | |
| Apr 2026 | 48 |
Castellum Employees & Headcount: Frequently Asked Questions
Castellum has 53 employees according to LinkedIn, compared with 260 reported in its most recent official filings. The LinkedIn figure counts everyone who lists Castellum as their current employer, so it reflects workforce changes sooner than annual filings.
Castellum’s headcount has been broadly stable over the past three months, with 1 active job postings. View the headcount trend chart above for the full history.
Headcount is a leading indicator: companies typically hire before revenue accelerates and reduce staff before earnings disappoint. No single data point predicts a stock on its own, which is why AltIndex combines Castellum’s headcount with job postings, employee business outlook, and 20+ other signals in its AI Score.
Castellum underperforms its industry peers when it comes to Linkedin Employees, ranking dead last.
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