2025 Silent Capital Report now available. Where family offices and LPs are actually deploying. [Download for free →]
About usSign in
Status
ACTIVE
Global HQ
West Palm Beach, United States
Countries of investment
  • United States
  • Israel
Investment stages
  • Series A
  • Series B
  • Series C
  • Growth
Industries
  • Cybersecurity
  • Industrial Security
  • Energy Transition
About
ClearSky is a West Palm Beach-based venture capital firm focused on cybersecurity, industrial security, and energy transition. Their focus spans critical infrastructure security across United States and Israel. The firm supports transformative founders from Series A through growth.
Min check size
$2M
Max check size
$10M
Fund size
NPS

Investment Thesis

ClearSky is a growth-stage venture capital and growth equity firm deploying capital across cybersecurity, industrial security, critical infrastructure security, and energy transition sectors. They invest in transformative companies driving safety of the digital landscape. The firm differentiates itself through dual specialization in cybersecurity and sustainable energy with over $1 billion in capital commitments.
Lead investor
Co Invest
Number of exits
Preferred contact method

Manager's Experience

Co-founded by Alex Weiss (CEO Managing Partner), former at PriceWaterhouseCoopers and a serial energy/infrastructure investor, and James Huff (Managing Partner). The firm originally invested in energy, then pivoted into cybersecurity with Erik Straser (Partner), former General Partner at Mohr Davidow Ventures with 20+ years investing. Robert Rauch (Partner) leads investments at the intersection of cyber and infrastructure.

ClearSky Contacts Information

Primary contact

Secondary contact

Team

Alex Weiss - CEO Co-Founder Managing Partner

James Huff - Co-Founder Managing Partner

Erik Straser - Partner

Robert Rauch - Partner

Ryan Crum - Partner

Portfolio

SecurityAdvisor

Tenable (early)

CrowdStrike (early)

Cofense

Bugcrowd

Demisto

Iboss

Versa Networks

NXT-ID

Fund number
Vintage Year
Net Internal Rate of Return
Investment Multiple
Capital Allocation
Management Fee
Carried Interest
AUM
Follow-on Investments
Graduation Rate
Write-Off Ratio
Last profile update timestamp