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ClearSky

Venture capitalActively deploying

West Palm Beach · Seed–Growth · 15 people tracked

Also known as CLEARSKY ADVISORS LLC · ClearSky International · Clearsky Power Technology · ClearSky Security

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Investment thesis

ClearSky backs innovative companies in cybersecurity and energy transition, aiming to improve the safety of the digital landscape and support the global ecosystem. The firm emphasizes its core investment team's combined experience of over a century, having worked together for more than a decade and built deep sector-specific and financial expertise. It leverages an extensive network of founders, CEOs, VCs, and advisors to inform fund strategy and due diligence, seeking sustainable solutions for the planet alongside portfolio returns.

Invests inCleantechClimate TechCybersecurityEnergyGlobalWest Palm Beach

Source: firm website, verified Aug 3, 2026.

Stage
Seed–Growth
HQ
West Palm Beach, Florida, US
Instruments
Equity
Founded
2012
AUM
$1B
VC funds
5
Tracked investments
71

Team · 15 people

from the firm's website

What they invest in

from 22 of 71 portfolio companies

Cybersecurity ×10Energy ×8Enterprise Software ×7AI & Machine Learning ×6Cloud Computing ×3SaaS ×3Data & Infrastructure ×2Developer Tools ×2

HQs:United States×23Israel×1

Investments · 71 tracked

founders shown can be your intro path
Cyber Global Risk ExchangeSEC filingmedium confidence

Denver, US

Frederick H. Kneip(Chief Executive Officer)Jay Leek(Director)Robert R. Ackerman, Jr.(Director)Anthony J Urbanovich(Chief Operating Officer)Stuart McClure(Director)Alexander Weiss(Director)

Board seatJay Leek· per SEC Form D · $20M raise · filed Apr 2017

Accuricsaccurics.comin𝕏

Tenable One Cloud Exposure is a cloud-native application protection platform (CNAPP) that identifies and reduces cloud risk by addressing misconfigurations, risky entitlements, and vulnerabilities across multi-cloud and hybrid environments.

Cloud ComputingCybersecurityEnterprise Software

Altamira
Appomni Inc
Aquion Energy Inc

EnergyPittsburgh, US

John Connolly(Executive Officer)Ray Lane(Director)Jay Whitacre(Executive Officer, Director)Bill Wiberg(Director)Thomas R. McDaniel(Director)Scott A. Pearson(Executive Officer, Director)

Arctic Wolfarcticwolf.comin𝕏

Arctic Wolf provides managed detection and response (MDR) services with 24x7 security teams that detect, investigate, and respond to threats using an open XDR platform processing trillions of events weekly.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaS

Brian NeSmith(Founder & CEO)

Authentic8 Inc
Autogrid Systems Inc
Beacon AIbeaconai.co

Beacon AI builds an AI assistant for commercial and private aircraft to support pilots with checklist management, flight procedures, route optimization, and safety calculations.

AI & Machine Learning

BHI Energy
BigIDbigid.comin𝕏

BigID is a data security platform that discovers, classifies, and governs enterprise data across cloud, SaaS, and unstructured environments to enable privacy, security, and compliance.

CybersecurityData & InfrastructureEnterprise SoftwareMamaroneck, US

Gil Beyda(Director)Nimrod Vax(Secretary, Director)Dimitri Sirota(President, Treasurer, Chief Executive Officer, Director)

BoardEd Sim(Director)

BlueLava
Capsule8capsule8.com

Sophos provides cloud security software for multi-cloud environments, protecting workloads, identities, networks, and applications through extended detection and response (XDR), managed detection and response (MDR), and identity threat detection and response (ITDR) across AWS, Azure, GCP, and OCI platforms.

Cloud ComputingCybersecurityEnterprise Software

Cleartrace Technologies Inc
Climate Trade
Cloudgenix Inc
Cloudknox Security Inc

Sunnyvale, US

Suresh Batchu(Director)Balaji Parimi(Executive Officer, Director)Jay Leek(Director)

Cylance Inc
Databricks
Demistodemisto.comin𝕏

Demisto provides automation solutions for security operations centers (SOCs) to streamline incident response workflows by reducing alert noise, automating repetitive tasks, and enabling analyst collaboration.

CybersecurityEnterprise SoftwareSaaSCupertino, US

Jay Leek(Director)Rishi Bhargava(Executive Officer, Director)Slavik Markovich(Executive Officer, Director)

BoardJake Flomenberg(Director)

Diamanti Inc
Edgeq Inc
Fermata Energy Llc
Field Group As F K A Precisionhawk Inc
Fortress Security Holdings Llc

Orlando, US

Peter Kassabov(Executive Officer, Promoter)Edward Alexander Santos(Executive Officer, Promoter)

Greensmith Energy Management Systems Inc

EnergyRockville, US

Kevin Reid(Director)John Jung(Executive Officer, Director)Jim Murphy(Executive Officer)Raymond Spencer(Director)William Pruitt(Director)Rodney Rogers(Director)

Guardz Cyber Ltd
Harness
HUMAN
Icontrol Networks Inc
Inky Technology Corporation

College Park, US

Peter Kuper(Director)Christopher Hjelm(Director)James Bandanza(Director)Simon Smith(Executive Officer, Director)David Baggett(Executive Officer, Director, Promoter)

Intsights Cyber Intelligence Ltd

Herzeliya

Richard Bengino(Executive Officer)David Blumberg(Director)Kobi Samboursky(Director)Alon Arvatz(Executive Officer, Director, Promoter)Jay Leek(Director)Amir Hozez(Executive Officer)

Is5 Communications Inc
Lasso Security

End-to-end LLM security platform providing comprehensive protection from LLM-based cyber-attacks and data leakage.

Mainspring Energymainspringenergy.comin

Mainspring Energy develops power generation systems.

Deep TechEnergyHardware

BoardTom Linebarger(Chairman & Chief Executive Officer)

Mandiant
Mitiga インシデントレスポンスプラットフォームmitiga.ioin

Mitiga provides cloud incident response and breach prevention software using AI-driven detection and forensic analysis for enterprises.

AI & Machine LearningCloud ComputingCybersecurity

Mod Wind
Nextracker Inc
Nikola Corporation

Advanced ManufacturingPhoenix, US

Joseph R. Pike(Executive Officer)Gerrit A. Marx(Director)Jeffrey W. Ubben(Director)Michael L. Mansuetti(Director)Pablo Koziner(Executive Officer)Britton M. Worthen(Executive Officer)

Noda Inc
Novinium Inc

Auburn, US

DAVID GRIEST(Director)GLEN J. BERTINI(Executive Officer, Director)BROOKE WADE(Director)PIERRE FESTAL(Director)ALLAN O'BRYANT(Director)DAVID L. LEWIS(Executive Officer, Director)

Optiv
Phylumphylum.ioin𝕏

Veracode provides application security platform that analyzes code, dependencies, and runtime environments to identify and remediate software vulnerabilities at enterprise scale.

CybersecurityDeveloper ToolsEnterprise Software

Pike Corporation
Powerphase Llc
Preempt Security Inc

San Francisco, US

Roman Blachman(Executive Officer, Director)Steve Herrod(Director)Ajit Sancheti(Executive Officer, Director)

Process Unityprocessunity.comin𝕏

ProcessUnity provides a third-party risk management platform that enables risk and compliance teams to monitor vendor compliance, manage risk assessments, and respond to audit requests.

AI & Machine LearningCybersecurityEnterprise SoftwareLegalTechSaaSConcord, US

PAUL FERGUSON(Director)TODD A. STONE(Executive Officer, Director)MICHAEL COLLEARY(Director)JAMES SCOTT CURVEY(Director)ANDREW SHIELDS(Director)

ProtectWise

Denver, US

Jay Leek(Director)Gene Stevens(Executive Officer, Director)Larry Orr(Director)Scott Chasin(Executive Officer, Director)Matt Bigge(Director)Sheila Gulati(Director)

Query Aiquery.aiin𝕏

Query provides a security data mesh platform that integrates security data from 50+ distributed sources without requiring data migration or ingestion, enabling AI-driven threat detection and investigation across SIEMs, data lakes, and other security tools.

AI & Machine LearningCybersecurityData & InfrastructureBrookings, US

Jay Leek(Director)Dhiraj Sharan(Executive Officer, Director)Andrew Maloney(Executive Officer, Director)

Qwiet AIqwiet.aiin𝕏

Qwiet AI is an application security testing platform that identifies and remediates software vulnerabilities with high accuracy through AI-powered analysis.

AI & Machine LearningCybersecurityDeveloper Tools

Red Owl
Renew Home Llc
Resilient Systems
Respond Software Inc
Sceyesceye.comin

Sceye builds a high-altitude, long-endurance aerial platform for broadband connectivity and earth observation.

Climate TechSpace TechMoriarty, US

Sec Zettaseczetta.com

Fall River, US

David Pignolet(President)Zackary King King(Director)

BoardJay Leek(Director)Art Coviello(Director)

Security Advisor
Sentient Energy Inc
Skoutskout.com

Skout is a social platform operated by The Meet Group, Inc.

MarketplacesSocialNew Hope, US

Nicholas Hermansader(Managing Director)

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.

Frequently asked questions

What stage does ClearSky invest at?
ClearSky invests at the Seed, Series A, Series B, Series C, Growth stages.
What sectors does ClearSky focus on?
ClearSky focuses on Cleantech, Climate Tech, Cybersecurity, Energy.
Where is ClearSky located?
ClearSky is headquartered in West Palm Beach, US.

Images

ClearSky photoClearSky photoClearSky photoClearSky photoClearSky photoClearSky photo

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