ClearSky Security

About

Portfolio · 4

Guardz

Cybersecurity Platform Built for MSPs

Led ★ 2 rounds $74.0M committed Latest: 2025-06

Mitiga

Cloud Incident Readiness and Response

Led ★ 3 rounds $50.0M committed Latest: 2025-01

Lasso

Cybersecurity Platform for Agentic AI

1 round $5.0M committed Latest: 2024-02

T-REX

Advanced Software and Managed Data Services for Asset-backed Finance

1 round $40.0M committed Latest: 2022-01

Investment activity

1 portfolio exit on record.

Funds · 2

• Clearsky Power & Technology Fund II — $210M May 2019
• learSky Security Fund I — $244.7M Aug 2018

Q&A

What is ClearSky Security's primary investment focus?

ClearSky Security specializes in investing in innovative companies within the cybersecurity and energy transition sectors.

When was ClearSky Security founded?

ClearSky Security was founded in 2012.

Which notable funds has ClearSky Security raised?

ClearSky Security raised the learSky Security Fund I, closing at $244.7 million in August 2018, and the Clearsky Power & Technology Fund II, which raised $210 million in May 2019.

Can you name some of ClearSky Security's recent portfolio companies?

ClearSky Security's recent portfolio includes Guardz, a cybersecurity platform for MSPs, and Lasso, a cybersecurity platform for Agentic AI.

What is ClearSky Security's most recent exit?

ClearSky Security had an exit in April 2024 with the acquisition of T-REX by Finsight Group.

Who are the founders of ClearSky Security?

The founders of ClearSky Security are Alex Weiss, who serves as CEO & Managing Director, and James Huff, a Managing Partner.

What investment stages does ClearSky Security typically participate in?

ClearSky Security invests across Seed, A Round, B Round, and C Round stages.

What is the geographic focus of ClearSky Security?

ClearSky Security is headquartered in West Palm Beach, Florida, United States.