OCompany · Cybersecurity
Onum
Onum is a Madrid-founded telemetry/observability pipeline company whose in-memory platform collects, filters, enriches, transforms and routes log and telemetry data in stream before it reaches SIEM, observability and storage tools, cutting data volumes and cost while speeding up security and IT decisions. Founded in 2022 by repeat founder Pedro Castillo (creator and former CEO/CTO of Devo), it raised roughly $40M across a ~€11.6M seed led by Insight Partners and a $28M Series A led by Dawn Capital in April 2024. Onum is no longer an independent startup: CrowdStrike announced its acquisition for about $290M in August 2025.
Founded
2022
Founders
3
News
6
Rounds
2
Investors
3
SectorsCybersecurity, Data Observability, Enterprise Software, AI & Data, DevOps / Telemetry Pipelines
Start-up MapCybersecurity › Security operations & threat intelligence
Profile updated 7 Sep 2026
Founders
L
Lucas Varela
Co-Founder & CTO
—
P
Pedro Castillo
Co-Founder & CEO
P
Pedro Tortosa
Co-Founder & SVP Business Development / Alliances
—
Global models
No comparables on record yet.
Investors 3
Funding rounds 2
News & media 6
| Published | Article |
|---|---|
| 2025-11-06 |
How Onum is turning data overload into real-time defense ↗
Insight Partners
|
| 2025-10-16 |
De Devo a Onum: la ruta de Pedro Castillo para cerrar el círculo del dato y vender dos empresas ↗
Emprendedores
|
| 2025-08-28 |
CrowdStrike acquires Spanish telemetry startup Onum to catch hacks sooner and cut data costs ↗
Tech.eu
|
| 2025-04-29 |
Onum Launches BYOCode, In-Pipeline Sigma Rules, AI Pipeline Assistants, and Marketplace to Advance Real-Time Telemetry Control ↗
PRWeb
|
| 2025-03-01 |
Onum, multinacional tecnológica, prepara su entrada al mercado colombiano: estos son los detalles ↗
Valora Analitik
|
| 2024-04-10 |
Onum raises $28M to help organizations extract their most valuable data in real time ↗
SiliconANGLE
|