# Lookout

> Mobile security platform protecting smartphones from malware, loss, and enterprise threats.

## Why it is interesting

Lookout was an early mobile-security category leader — a16z led its $40M Series D in 2011 and stayed in through the $150M Series F as mobile became the primary computing surface.

## Profile

- **Stage:** growth
- **Status:** private
- **Industries:** cybersecurity, enterprise-saas
- **Coverage:** full
- **Last updated:** 2026-07-24

## Key facts

- Series D (Sep 2011): $40M led by a16z; Khosla, Index, Accel participated (a16z announcement)
- Series E (2013): Greylock joined syndicate; Series F (2014): $150M with T. Rowe Price lead (Lookout press)
- Co-investors: Khosla Ventures, Index Ventures, Greylock added; Accel/T. Rowe not in VCT directory (sources reviewed 2026-07-24)

## Investors in our directory

- https://venturecapitaltracker.com/fund/andreessen-horowitz
- https://venturecapitaltracker.com/fund/khosla-ventures
- https://venturecapitaltracker.com/fund/index-ventures
- https://venturecapitaltracker.com/fund/greylock-partners

## Related articles

- https://venturecapitaltracker.com/2026-a16z-hot-portfolio-companies

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Source: https://venturecapitaltracker.com/startup/lookout