Illumio
Illumio is a cybersecurity company founded in 2013 and based in Sunnyvale, California. It focuses on advanced security solutions centered around Zero Trust Segmentation and micro-segmentation. These solutions help organizations protect against cyber threats by preventing lateral movement of attacks within their networks. The core offering of Illumio is its Zero Trust Segmentation platform, which includes features like micro-segmentation for granular control of security policies, real-time visibility into application dependencies, and breach containment to minimize the impact of security incidents. The platform is delivered as a Software-as-a-Service (SaaS) solution, supporting hybrid and multi-cloud environments. Illumio serves a diverse range of industries, including healthcare, finance, and aviation, and counts approximately 20% of Fortune 100 companies among its clients. The company has received recognition as a leader in the micro-segmentation space and has achieved significant financial performance, reflecting strong customer satisfaction and demand for its services.
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Headcount trend
Illumio went from 551 employees in Oct 2024 to 724 in Sep 2026. Apr to Sep 2026: 83 people joined, 38 left.
Org structure
Headcount by department
Hiring now
See all jobsSalaries at Illumio
All salaries41 salary profiles in the US
Most reported roles
H-1B sponsorship
The department split adds up all the years listed above. FY2026 alone: 31 filings.
Funding
- Jun 2021 · Series F · $225M · Thoma Bravo, Franklin Templeton, Hamilton Lane
- Feb 2019 · Series E · $65M · J.P. Morgan Asset Management
- Jun 2017 · Series D · $125M · J.P. Morgan Asset Management, Andreesen Horowitz, General Catalyst
- Apr 2015 · Series C · $100M · BlackRock, Inc., Accel Partners, Formation 8
- Sep 2013 · Series B · $34.5M · Andreessen Horowitz, Formation8, General Catalyst Partners
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Illumio FAQ
How many employees does Illumio have?
Illumio has about 724 employees, up 2.1% over the 3 months to Sep 2026.
Does Illumio sponsor H1B visas?
Yes. Illumio filed 31 H1B (LCA) applications in FY2026, according to the latest U.S. Department of Labor disclosures. Most of them were for Engineering roles.
What is Illumio's revenue per employee?
Illumio makes about $138K in revenue per employee, based on $100M annual revenue and 724 employees.
How much does Illumio pay?
6figr has 41 salary profiles for Illumio in the US, with pay broken down by role, level, gender and ethnicity on the Illumio salaries page. See Illumio salaries
How much funding has Illumio raised?
Illumio has raised $549.5M in total funding; its latest round was Series F in Jun 2021.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.