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Castellum
Cybersecurity · Vienna, United States · Founded 2010 · IPO 2011
Talent graph
Castellum's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where Castellum has talent and traffic
across markets
Capital deployed
Castellum's 4 investments and acquisitions.
Every disclosed deal where Castellum appeared as a backer or acquirer, 2021–2023. Toggle between venture rounds, M&A, or both. The map below is grouped by the target company's sector — the colored pill on each chip is the round type.
4 deals across Castellum's capital deployment.
Where the deals concentrate by sector, stage, and decade.
02 · Portfolio market map
Castellum's portfolio, mapped.
Each chip is one company. Pill colour shows round type — green for Seed, blue for Series A, purple for B/C+, pink for late-stage, amber for M&A. Bigger sectors keep their full list behind “+ N more”.
Market sentiment
What the market is saying about Castellum
An AI-synthesized read of the highest-engagement posts about Castellum on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See Castellum on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.