Startup profile for Illumio: latest funding, latest known valuation, total disclosed funding, investors, status, sources, and why the company is interesting. Part of the Venture Capital Tracker startup directory.
Venture Capital Tracker logo
Venture Capital Tracker

Startup profile · funding coverage

Illumio funding, valuation and investors

Zero-trust microsegmentation platform for data-center and cloud breach containment.

Keep track of Illumio

Save this profile to your VCT watchlist for a quick return.

View watchlist

Funding, valuation & investors

Answer-first snapshot

Latest funding

Series F

$225M · 2021

Latest known valuation

$2.75B

Series F · 2021

Total disclosed equity funding

$350M

Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.

Current status

private

growth · Sunnyvale, California

Investors in latest funding

Lead: Thoma Bravo

Sources: latest funding Last verified: 2026-07-25

Overview

Illumio provides zero-trust microsegmentation to contain breaches in data centers and cloud environments — limiting lateral movement when attackers penetrate a network.

Why Illumio is interesting

a16z seed investor since 2013; category leader in adaptive segmentation before Thoma Bravo-led F.

Product & use cases

Illumio provides zero-trust microsegmentation software limiting lateral movement during breaches in data-center and cloud environments.

  • Workload-level security policy enforcement
  • Breach containment via microsegmentation
  • Cloud and data-center zero-trust segmentation

Key facts

  • Series D (2017): $125M led by J.P. Morgan AM; General Catalyst, 8VC, a16z participated — Illumio news
  • Series F (2021): $225M at $2.75B led by Thoma Bravo (not in VCT directory)
  • a16z seed investor since 2013; category leader in adaptive segmentation

Funding history (newest first)

Series F

2021 $225M Valuation: $2.75B
  • Thoma Bravo (lead)

Source: https://www.illumio.com/news/series-f

Series D

2017 $125M

Source: https://www.illumio.com/news/series-d

Investors in our directory

Funds linked from Illumio's profile — open a fund page for stage focus and related deal articles.

Andreessen Horowitz General Catalyst 8VC

Competitive landscape

Edge: Category leader in adaptive segmentation since 2013 — a16z seed investor; $2.75B valuation at Series F (2021).

Perimeter firewalls fail once attackers are inside. Microsegmentation contains blast radius — Illumio is established leader with Thoma Bravo-led Series F at $2.75B.

  • Cisco incumbent

    Network security incumbent; Illumio workload-focused.

  • Guardicore (Akamai) direct

    Microsegmentation competitor acquired by Akamai.

  • ColorTokens direct

    Zero-trust segmentation; smaller scale than Illumio.

Notable stories

  • a16z seed investor since 2013 — early zero-trust microsegmentation bet.
  • Thoma Bravo-led Series F $225M at $2.75B valuation (2021).

Industries

Cybersecurity Enterprise SaaS

FAQs about Illumio

Practical answers founders, operators, and investors typically search for.

Zero-trust microsegmentation limiting lateral movement during breaches in data-center and cloud.
a16z (/fund/andreessen-horowitz) seed investor since 2013. General Catalyst (/fund/general-catalyst) and 8VC (/fund/8vc) in Series D. Thoma Bravo led Series F ($225M, 2021).
Security policy enforced at individual workload level — contains breach blast radius.
Firewalls protect perimeter; Illumio limits movement inside the network after breach.
Series F — $225M at $2.75B valuation (2021).
Andrew Rubin and PJ Kirner co-founded Illumio in 2013.
Zero-trust segmentation is standard enterprise security architecture — Illumio is category leader.
No — remains private.
Website All startups Funding news

By Venture Capital Tracker

Last updated:

Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.