How many investments has ClearSky made?

ClearSky has 75 tracked investments, 7 of which have exited, including 4 dated in the last 24 months.

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.

Does ClearSky lead rounds?

ClearSky has led 3 of the 13 rounds where its role is on record.

Who does ClearSky co-invest with?

ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 92 tracked co-investors.

ClearSky

Venture capitalActively deployingoperating company · company profile

West Palm Beach · Seed–Growth · 20 people tracked

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

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Find your way into ClearSky

1,973 people in our graph share verified history with the ClearSky team — schools, employers, funds. One of them is your warm intro.

Paul Kwanunlockedknows Erik Straser · together at Stanford University (overlapped)

×3knows the team · via Smith Barney Inc

knows the team · via Boston University

knows the team · via Columbia University

knows the team · via JP Morgan Chase

×2knows the team · via Stanford University

✨ Fox Verdict

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 inCleantech Climate Tech Cybersecurity Energy Global West Palm Beach

Source: firm website, verified Sep 15, 2026.

Stage

Seed–Growth

West Palm Beach, Florida, US

Instruments

Equity

Founded

2012

Last 12 months

3 investments

AUM

$1B

VC funds

Tracked investments

Acquisitions

Team · 20 people

from the firm's website & curated & public directories

Alex Weiss· CEO, Co-Founder & Managing Partner· North Palm Beach, Florida, United Statesin

Alex Weiss is CEO, Co-Founder, and Managing Partner of ClearSky, where he also serves on the Investment Committee. Before founding ClearSky, he was Vice President and Chief Investment Officer at NextEra Energy, co-heading its venture capital effort, and earlier held roles as Vice President at Morgan Stanley and Managing Director at Smith Barney and Paine Webber. He holds a B.A. in mathematics and economics from Boston University and an M.B.A. in finance from Columbia University.

a•••@clear-sky.comreveal

James Huff· Co-Founder & Managing Partner· West Palm Beach, Florida, United Statesin

James Huff is a Co-Founder and Managing Partner of ClearSky and sits on its Investment Committee, with over 20 years of financial experience in structuring, due diligence, and execution of debt and equity transactions. Before ClearSky, he was Vice President, Emerging Technologies at NextEra Energy and held finance roles at Chicago Venture Partners and Deloitte. He holds a B.S. in finance from the University of Florida and an M.S. in quantitative finance from the Illinois Institute of Technology.

j•••@clear-sky.comreveal

James Goldinger· General Partner

Peter Kuper· General Partner

Steven Foster· General Partner

Jay Leek· Managing Partner & Co-founder· West Palm Beach, Floridain

Jay Leek is managing partner and founder at SYN Ventures, where he identifies and invests in emerging cybersecurity startups. He is also managing partner and co-founder at ClearSky, a venture capital firm focused on enterprise security, power, and technology investments. With over 25 years of experience in information security and risk management, along with technical and product development expertise, Leek has led numerous investments and exits in the cybersecurity sector.

Daniel Furey· Partner, Head of Global Capital Formation· West Palm Beach, Florida, United Statesin

Daniel Furey is Partner and Head of Global Capital Formation at ClearSky, with over 20 years of experience in capital formation, investor relations, and alternatives distribution. He previously held roles as a Principal at HarbourVest, Global Co-Head of Wealth at Global Infrastructure Partners (a BlackRock division), and senior leadership positions at UBS and Merrill Lynch's Investment Bank. He earned a B.A. in Economics from Southern Illinois University and an M.B.A. in Finance from the University of Chicago Booth School of Business.

Erik Straser· Partner· Menlo Park, California, United Statesin

Erik Straser, Ph.D., is a Partner at ClearSky and a member of its Investment Committee, with 25 years of experience in early-stage venture capital. Before ClearSky, he was a VC-in-residence at Current by General Electric, worked with GE Ventures, served as co-president of Stanford Angels and Entrepreneurs, and was a general partner at Mohr Davidow Ventures. He holds a B.S. in engineering from Harvey Mudd College and an M.S. and Ph.D. in engineering from Stanford University.

e•••@clear-sky.comreveal

Howard Shecter· Executive Partner· Greater Philadelphiain

Howard Shecter is an Executive Partner at ClearSky and was previously Managing Partner and Chairman of the international law firm Morgan Lewis, working as an M&A and corporate governance lawyer. He currently chairs the Board and Audit Committee of Venerable Insurance & Annuity Company, and previously chaired the Board of Harris Interactive and served on the Board of Safeskin Corp. He holds a degree in Government from Harvard University and a law degree from the University of Pennsylvania Law School.

Robert Rauch· Partner· West Palm Beach, Florida, United Statesin

Robert Rauch is a Partner at ClearSky and sits on the firm's Investment Committee, bringing over 20 years of engineering and business experience. Before joining ClearSky in 2012, he worked in corporate development at NextEra Energy and, earlier, served as a contract lead materials engineer for NASA's Space Shuttle Program. He holds a B.S. in chemical engineering from the University of Florida and an M.B.A. from Duke University's Fuqua School of Business.

r•••@clear-sky.comreveal

Ryan Crum· Partner· New York, New York, United Statesin

Ryan Crum is a Partner at ClearSky who combines operational cybersecurity experience with investing. He spent about a decade at Apollo, where he moved from Chief Information Security Officer to Chief Security Officer and Chief Technology Officer, and previously held cybersecurity leadership roles at TIAA-CREF and JPMorgan. He started his career as a Director in the Cyber Security Practice at PricewaterhouseCoopers.

Guy Nizan· Venture Partner· Tel Aviv, Israelin

Guy Nizan is a Venture Partner at ClearSky, where he opened and runs the firm's Tel Aviv, Israel office after joining in 2023. He previously co-founded and led IntSights, an external threat intelligence and protection company acquired by Rapid7, and earlier co-founded Cyber-School, a cyber training education company acquired by Highdele Group. He studied law and accounting at Tel Aviv University and was a founding member and officer of the IDF's cybersecurity unit.

Anjali Nagaraja· Associate· West Palm Beach, Florida, United Statesin

Anjali Nagaraja is an Associate at ClearSky, which she joined in 2023. She previously worked as a management consultant focused on mergers and acquisitions at PricewaterhouseCoopers. She holds a B.A. in business and economics from the University of California, Los Angeles.

Austin Summers· Senior Vice President· West Palm Beach, Florida, United Statesin

Austin Summers is a Senior Vice President at ClearSky, which he joined in 2019. He previously worked as an investment banking analyst in mergers and acquisitions at SunTrust Robinson Humphrey and as an investment banking analyst at Frisch Capital Partners. He holds a B.A. in business administration and finance from the University of Georgia.

Jacqueline de Sanctis· Managing Director & Head of Investor Relations· Palm Beach, Florida, United Statesin

Jacqueline de Sanctis is Managing Director and Head of Investor Relations at ClearSky, a role she rejoined in 2023 after first holding it in 2020. She previously served as Head of Institutional Business Development at Cliffwater and as Managing Director at Neuberger Berman, where she worked for a decade with investment consultants and institutional limited partners, and earlier held roles at Allianz Global Investors, Credit Suisse, J.P. Morgan, and Callan Associates. She holds an M.A. Honors in Classical Studies from the University of St. Andrews.

Joseph Wright· Chairman of the Investment Committee· North Palm Beach, Florida, United Statesin

Joseph Wright is Chairman of ClearSky's Investment Committee and also serves as Executive Partner of Comvest Group, Inc. and Chairman of the Advisory Board of Chart National, L.P. His prior roles include Executive Chairman of FedData, CEO of Scientific Games Corporation, Executive Chairman of MTN Satellite Communications, Chairman of Intelsat, CEO of PanAmSat, and Vice Chairman of W.R. Grace & Company. In the 1980s he served under President Reagan as Deputy Secretary of Commerce and Director of the Federal Office of Management and Budget. He holds a B.S. from the Colorado School of Mines and a Master's in Industrial Administration from Yale University.

Nick-Anthony Buford· Managing Director & General Counsel· West Palm Beach, Florida, United Statesin

Nick-Anthony Buford is a Managing Director and General Counsel at ClearSky, a role he has held since 2012, where he handles investment and exit transactions along with fund formation, governance, and compliance. He has more than 20 years of legal experience in capital markets and venture capital, previously serving as a Senior Attorney leading NextEra Energy's venture capital investment activities and working at Linklaters, Hogan & Hartson (now Hogan Lovells), and Herbert Smith Freehills across London, Miami, and Singapore. He holds a B.A. in government from Harvard University and a J.D. from UC Berkeley School of Law, is admitted to the New York and Florida bars, and is fluent in Spanish.

Owen Santos· Analyst· West Palm Beach, Florida, United Statesin

Owen Santos is an Analyst at ClearSky, which he joined in 2025. He holds a B.A. in Business Administration and an M.S. in Business Analytics from the University of Florida.

Vince Nicchi· Controller· United Statesin

Vince Nicchi serves as Controller at ClearSky, which he joined in 2019. He previously worked as a senior accountant at LeverPoint Management and as an accountant at MPSC Certified Public Accountants and Advisors, P.C. He earned two B.S. degrees from Pennsylvania State University in accounting and agribusiness management, with a minor in information systems management.

Patrick Heim

What they invest in

from 39 of 75 portfolio companies

Cybersecurity ×19Enterprise Software ×17AI & Machine Learning ×15SaaS ×15Energy ×11Cloud Computing ×6Cleantech ×4Climate Tech ×3

HQs:United States×37Czechia×1Israel×1

Who they back

founder profiles across 29 portfolio companies

69%

solo founders

20 of 29 mapped founding teams

30%

repeat founders

of 23 founders with career history

~3 yrs

old at investment

median across 8 dated deals

Founding team size:solo founder×202 founders×83 founders×1

Where their founders studiedfrom 16 founders with education data

Bar-Ilan University ×2The Hebrew University of Jerusalem ×2The University of Chicago Booth School of Business ×2

What their founders studiedfrom 19 founders with field-of-study data

Computer Science ×9Engineering ×5Business & Management ×4Economics ×2Finance & Accounting ×2

Where their founders worked beforefrom 23 founders with career history

Arcsight ×2CYBEAR.co ×2SAP ×2Segasec (Acq. by Mimecast) ×2

Investments · 75 tracked

founders shown can be your intro path

By year:2026 · 3 2024 · 4 2022 · 1 2021 · 3 2020 · 1 2019 · 2 2018 · 3 2017 · 2 2016 · 2 2015 · 122 dated

Ubicquiaubicquia.com in 𝕏Feb 2026 · $106M✓ verified

Ubicquia builds intelligent infrastructure products, including smart streetlighting systems with data analytics, that connect to existing utility and city assets.

CleantechEnergyGovTechHardwareIoTFort Lauderdale, US

Ian Aaron(Chief Executive Officer)in Lowell Kraff(Chairman, Co-Founder)in Heather Ritchie(Executive Officer)in Santiago Serrano(Executive Officer)inKyle Brown(Executive Officer)inMansour Ghomeshi(General Counsel & Secretary of Board)in

Co-investorsFuel Venture Capital Marunouchi Innovation Partners GMS+Hamilton Lane

Accuricsaccurics.com in 𝕏acquired by Tenable

Cloud ComputingCybersecurityEnterprise Software

Co-investorsFirebolt Ventures Management Company, Llc WestWave Capital

AppOmniappomni.com in 𝕏Apr 2021 · $40M

AppOmni provides SaaS Security Posture Management (SSPM) software that secures enterprise SaaS and AI-driven applications to prevent data breaches, using threat research and continuous monitoring.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaSSan Francisco, US

Brian Soby(Co-Founder)in Brendan O'Connor(Chief Strategy Officer and Co-Founder)Bridget Gleason(CRO and Chief Customer Officer)in Tina Hawk(Chief People Officer)in

Board Ariel Tseitlin(Director)inPatrick Heim(Director)

Co-investorsCisco Investments Inner Loop Capital Prosperity7 Ventures Scale Venture Partners Silicon Valley Data Capital Benchmark +4 more

Arctic Wolfarcticwolf.com in 𝕏

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)in

Co-investors33N Artisanal Ventures Bright Pixel Capital Cyber Mentor Fund Delta-v Capital Draper Associates +16 more

Authentic8authentic8.com in

Authentic8 provides secure browsing and online investigation tools, with certifications including FedRAMP and SOC 2 aimed at government and enterprise customers.

Cloud ComputingCybersecurityGovTechSaaSRedwood City, US

Scott Petry(Founder)in Ramesh Rajagopal(Founder)in

Co-investorsEastward Capital Partners Foundry Merus Capital Razor's Edge Ventures Shield Capital Vistara Growth

Beacon AIbeaconai.coAug 2024

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 LearningSan Carlos, US

Avinash Nair(Founder)inMatthew Cox(Executive Officer, Director)

BoardGregory Sands(Director)

Co-investorsJetBlue Ventures New North Ventures Scout Ventures Scout Ventures SKY VC Countdown Capital +1 more

BigIDbigid.com in 𝕏

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 & InfrastructureEnergyEnterprise SoftwareMamaroneck, US

Nimrod Vax(Co-Founder and CPO)in Dimitri Sirota(CEO)in

Board Gil Beyda(Director)in Ed Sim(Director)in

Co-investorsBessemer Venture Partners boldstart ventures Cisco Investments Comcast Ventures Gaia Ventures Glynn Capital Management +10 more

Blue Lavablue-lava.netNov 2021 · $25M

Menlo Park, US

Demetrios Lazarikos(Executive Officer, Director)David Walter(Executive Officer, Director)

Board Jay Leek(Director)Charles Beeler(Director)

Co-investorsCyber Mentor Fund Rally Ventures Management, Llc Syn Ventures Seed Management Llc Crosslink Capital

Capsule8capsule8.comAug 2019 · $6.5Macquired by Sophos

Capsule8 developed runtime security and attack detection software for Linux production environments, protecting cloud workloads, containers, and servers.

Cloud ComputingCybersecurityEnterprise Software

John Viega(Founder)in

Co-investorsBessemer Venture Partners Intel Capital Rain Capital Syn Ventures Seed Management Llc Aramco Ventures Index Ventures

Climate Tradeclimatetrade.com in 𝕏

ClimateTrade operates a carbon marketplace and sustainability platform that enables individuals and companies to calculate their carbon footprint, purchase verified carbon credits, and fund certified sustainability projects globally.

Circular EconomyClimate TechImpact & Social Good

Co-investorsShip2B Amasia

Cloudknox Security Inc inAug 2018

Sunnyvale, US

Balaji Parimi(Executive Officer, Director)in Suresh Batchu(Director)in

Board Jay Leek(Director)in

Demistodemisto.com in 𝕏Oct 2018Acquired

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

Rishi Bhargava(Co-Founder)inSlavik Markovich(Co-Founder and CEO)Dan Sarel(Co-Founder and VP Product)Guy Rinat(Co-Founder and VP Engineering)Lior Kolnik(Head of Security Research)Aviad Lichtenstadt(VP R&D)

Co-investorsAccel Greylock Partners Syn Ventures Seed Management Llc Wing Brightmind First Round Capital +1 more

Diamantidiamanti.com in 𝕏

Diamanti builds a platform for running and managing Kubernetes and cloud-native applications at scale across on-premises data centers and public clouds, serving enterprises across industries.

Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareWest Palm Beach, US

Co-investorsNeva Sgr.Threshold Ventures TransLink Capital CRV (Charles River Ventures)DFJ Goldman Sachs +1 more

Edgeqedgeq.io in 𝕏

EdgeQ develops software-defined 5G technology that lets customers access, customize, and deploy 5G networks through software, with a focus on moving cloud data processing and connectivity to the network edge.

AI & Machine LearningDeep TechHardwareSemiconductorsSpace TechSanta Clara, US

Vinay Ravuri(CEO & Founder)in

Co-investorsFusion Threshold Ventures Yaletown Partners Lockheed Martin Ventures

Fermata Energyfermataenergy.com in 𝕏

Nuvve provides battery storage, microgrids, and vehicle-to-grid (V2G) and smart charging technology that turns buildings, batteries, and electric vehicles into grid resources.

CleantechEnergyMobility & Transportation

Co-investorsSkyview Ventures

Guardzguardz.com in 𝕏

Guardz is a unified cybersecurity platform built for managed service providers that integrates identity threat detection, endpoint protection, email security, and data defense.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaS

Co-investorsAtento Capital BRM Capital Glilot Capital Partners Hanaco Venture Capital Lumir Ventures S Ventures +2 more

Hatzhatz.ai in 𝕏Jan 2024 · $2.5M

Hatz provides an AI platform that enables teams to implement artificial intelligence workflows while maintaining data control and privacy.

AI & Machine LearningEnterprise SoftwareFuture of WorkSaaSNew York City, US

James Hatzell(Executive Officer, Director, Promoter)

Board Aidan Kehoe(Director)in Frazer Anderson(Director)in

Co-investorsNadia Partners Vestigo Ventures DVx Ventures RSE Ventures The Raba Partnership

Human Securityhumansecurity.com in 𝕏Oct 2024 · $50M

HUMAN is a cybersecurity company focused on detecting and stopping automated bot attacks and digital fraud.

AdTechAI & Machine LearningCybersecurityEnterprise SoftwareSaaSBrooklyn, US

Tamer Hassan(Co-founder)in Michael Tiffany(Co-founder)inDan Kaminsky(Co-founder)Ash Kalb(Co-founder)in

Co-investorsCanaan Partners DCVC (Data Collective)Evolution VC Partners Grit Capital Partners Gula Tech Adventures NightDragon +4 more

Inky Technology Corporationinky.com in 𝕏

INKY provides a GenAI-powered email security platform that blocks phishing, malware, and impersonation attacks, protects against account takeover and data loss, and coaches users in real time to make safe choices.

AI & Machine LearningCybersecuritySaaSCollege Park, US

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

Co-investorsInsight Partners

Lassolasso.security in 𝕏

Lasso Security offers an AI security platform that discovers, assesses, and protects AI agents and applications across their lifecycle, addressing risks like Shadow AI, prompt manipulation, and guardrail bypasses.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaS

Elad Schulman(Founder)in Lior Ziv(Founder)in Ophir Dror(Founder)in

Co-investorsEntrée Capital Mindset Venture Selah Ventures

Lassoproductlasso.com 𝕏Sep 2026 · $30M

Lasso provides integrations that connect ecommerce platforms with various business systems, supporting popular platforms alongside custom API integrations.

AI & Machine LearningE-commerceRetail TechSaaSPrague, CZ

Jiří Štěpánek

Co-investorsMITON Entrée Capital iAngels SingTel Innov8 Pte Ltd.

Mainspring Energymainspringenergy.com in

Mainspring Energy develops power generation systems.

Deep TechEnergyHardware

Shannon Miller(Founder)in

BoardTom Linebarger(Chairman & Chief Executive Officer)

Co-investorsKhosla Ventures DCVC (Data Collective)Fine Structures Ventures Marunouchi Innovation Partners Breakthrough Energy Ventures General Catalyst +2 more

Mandiantmandiant.com 𝕏

Mandiant provides cybersecurity consulting and services, including incident response, compromise assessments, red team and offensive security testing, threat intelligence, and AI security consulting.

Cloud ComputingCybersecurityEnterprise Software

Kevin Mandia(Founder)in

Co-investorsKleiner Perkins One Equity Partners

Mitigamitiga.io in

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

AI & Machine LearningCloud ComputingCybersecurity

Ariel Parnes(Founder)in Charlie Thomas in

Co-investorsAtlantic Bridge Ventures Dnx Ventures Glilot Capital Partners Rain Capital Syn Ventures Seed Management Llc

NEXTrackernextracker.com

Fremont, US

Daniel Shugar(Executive Officer, Director)inRobert Zapotosky(Executive Officer)

BoardWade Woodson(Director)Nancy Pfund(Director)inBruce Ledesma(Director)Suvi Sharma(Director)in

Co-investorsDBL Partners SJF Ventures BlackRock

Nikolanikola.tech in 𝕏Jun 2021

AssetWatch provides condition-based monitoring for industrial machinery, using vibration and temperature sensors plus cloud software to detect equipment issues before failure.

Advanced ManufacturingIoTSaaSPhoenix, 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)

Co-investorsBreak Trail Ventures Capital Q® Ventures Inc.

Nodanoda.nyc

Noda is a restaurant in New York City offering reservations and private event bookings.

ConsumerNew York, US

Co-investorsBooz Allen Ventures Reshape Bessemer Venture Partners

Phylumphylum.io in 𝕏May 2022 · $15Macquired by Veracode

CybersecurityDeveloper ToolsEnterprise SoftwareEvergreen, US

Dan Burns(Director)Peter Morgan(Director)Aaron M. Bray(Executive Officer, Director)

Board Renny McPherson(Director)Patrick Heim(Director)

Co-investorsAtlassian Ventures Aviso Ventures Ballistic Ventures Service Provider Capital First In SixThirty Ventures+1 more

Process Unityprocessunity.com in 𝕏

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

TODD A. STONE(Executive Officer, Director)in

BoardPAUL FERGUSON(Director)MICHAEL COLLEARY(Director)JAMES SCOTT CURVEY(Director)ANDREW SHIELDS(Director)MATTHEW CHRISTENSEN(Director)

Co-investorsGolub Growth Long Ridge Equity Partners Scale Venture Partners

Query Aiquery.ai in 𝕏

Query.ai offers a federated search platform that lets security teams search and normalize data across multiple sources — including SIEMs, data lakes, cloud storage, EDR, identity, and threat intelligence tools — from a single search bar without writing complex queries.

AI & Machine LearningCybersecurityData & InfrastructureEnterprise SoftwareSaaSBrookings, US

Dhiraj Sharan(Chief Scientist & Founder)in Matt Eberhart(CEO)inAndrew Maloney(Executive Officer, Director)

Board Jay Leek(Director)

Co-investorsCisco Investments fama Ventures, LLC Syn Ventures Seed Management Llc Tech Square Ventures SYN Ventures

Qwiet AIqwiet.ai in 𝕏

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

Co-investorsMayfield Fund SINEWAVE VENTURES Syn Ventures Seed Management Llc Wipro Ventures SYN Ventures

Renewhomerenewhome.com in

Renew Home provides demand response software that enables energy providers to manage residential electricity consumption during peak demand periods or grid emergencies through smart thermostats.

CleantechEnergyIoTSaaS

Co-investorsCity Light

Sceyesceye.com in

Sceye develops high-altitude platform station (HAPS) aircraft designed for long-endurance flight in the stratosphere, providing direct-to-cellphone broadband connectivity as an alternative to ground infrastructure and earth observation for monitoring environmental and climate indicators.

Climate TechDeep TechSpace TechMoriarty, US

Mikkel Vestergaard Frandsen(Founder)in

Co-investorsLauder Partners SoftBank Group

Sec Zettaseczetta.comAug 2019

Fall River, US

David Pignolet(President)

Board Jay Leek(Director)Zackary King King(Director)Art Coviello(Director)in

Co-investorsMassMutual Ventures Rally Ventures Management, Llc Syn Ventures Seed Management Llc

Skoutskout.com

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

MarketplacesSocialNew Hope, US

Nicholas Hermansader(Managing Director)in

Co-investorsAndreessen Horowitz Time Zero Capital

SKOUT Cybersecuritygetskout.com in 𝕏acquired by Barracuda Networks

Barracuda XDR is an extended detection and response platform for managed service providers, aggregating logs and data across environments into a centralized view and backed by a 24/7 global security operations center.

CybersecurityEnterprise SoftwareSaaS

Co-investorsRSE Ventures

Space-Time Insightspacetimeinsight.comSep 2016Acquired

Space-Time Insight builds geospatial visual analytics and industrial IoT software for utilities, energy, transportation and manufacturing.

San Mateo, US

Rob Schilling(Chief Executive Officer)

Board Gill Cogan(Director)James Huff(Director)inBill Kingsley(Director)Jasvir Gill(Director)John Luongo(Director)

Co-investorsZouk Capital EnerTech Capital Opus Capital

Verodinverodin.com

Mclean, US

Christopher Key(Founder)inBenito A. Cianciaruso, Jr.(Executive Officer, Promoter)

Board Charles Beeler(Director)Matt Bigge(Director)inJay Leek(Director)

Co-investorsBessemer Venture Partners Cisco Investments Crosslink Capital Syn Ventures Seed Management Llc Ten Eleven Vital Venture Capital +3 more

White Opswhiteops.com in 𝕏Jan 2026

HUMAN offers a modular cybersecurity platform that detects and disrupts bot attacks, ad fraud, and human-led fraud across advertising, account, and application surfaces.

AdTechAI & Machine LearningCybersecurityEnterprise SoftwareBrooklyn, US

Michael Tiffany(Executive Officer, Director)in Tamer Hassan(Executive Officer)inAshur Kalb(Executive Officer)Dan Kaminsky(Executive Officer, Director)Ash Kalb in

BoardSteven Fredrick(Director)

Co-investors11.2 Capital Paladin Capital Group Three Tree Ventures Goldman Sachs Grotech Ventures

XGS Energyxgsenergy.com inJan 2024

XGS Energy develops a proprietary solid-state, closed-loop geothermal system that uses thermally conductive materials and a pipe-in-pipe heat exchanger to generate clean, round-the-clock power without dependence on water or specific rock geology.

CleantechClimate TechEnergyPalo Alto, US

Richard Chong(Chief Financial Officer)inMichael Danaher(Executive Officer)Ghazal Izadi(Executive Officer)inJoshua Prueher(Executive Officer, Director)Glen Robinson(Director)David Seldin(Director)

Co-investorsAligned Climate Capital Climate Innovation Capital Constellation Technology Ventures Thin Line Capital Valo Ventures VoLo Earth Ventures +2 more

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Cyber Global Risk ExchangeAltamiraAquion Energy IncAutogrid Systems IncBHI EnergyCleartrace Technologies IncCloudgenix IncCylance IncDatabricksField Group As F K A Precisionhawk IncFortress Security Holdings Llc Greensmith Energy Management Systems IncHarnessHUMANIControl NetworksIntsights Cyber Intelligence LtdIs5 Communications IncMod WindNovinium IncOptivPike CorporationPowerphase LlcPreempt Security Inc ProtectWiseRed OwlResilient SystemsRespond Software IncSecurity AdvisorSentient Energy IncSolebit Labs LtdSpruceSystems ControlT Rex Group Inc Utility Innovation Holdings Inc Verengo

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.

Exits · 7

7 acquisitions · showing 5

Accuricsacq. by TenableCapsule8acq. by SophosIControl Networksacq. by Comcast (Converge platform) and Alarm.com (Connect/Piper businesses)Phylumacq. by VeracodeSKOUT Cybersecurityacq. by Barracuda Networks

Portfolio news

latest coverage across their companies

Lasso launches AI guardrail LEAP & raises USD $30m

Lasso · cfotech.news · Sep 8, 2026

Scoop: Geothermal developer XGS Energy preparing to raise $300M

XGS Energy · amp.axios.com · Aug 18, 2026

ICE relies on covert browsing infrastructure to monitor online activity | Biometric Update

Authentic8 · biometricupdate.com · Jul 24, 2026

Beacon Security raises $13 million Seed to build the data layer powering AI cybersecurity agents | CTech

Mitiga · calcalistech.com · Jul 16, 2026

Top AI Dev Tools Startups by Fundraising (2026) – New Market Pitch

Qwiet AI · newmarketpitch.com · Jul 13, 2026

How Mainspring Energy Turns Fuel Into Power Without Combustion | Inevitable podcast — MCJ

Mainspring Energy · mcj.vc · Jul 7, 2026

BigID Announces $70M in New Investment, Raising the Company's Valuation to $1B - BigDATAwire

BigID · hpcwire.com · Jun 12, 2026

Cyber startup Artemis raises $70 million just six months after launch | Ctech

Demisto · calcalistech.com · Apr 15, 2026

Frequently asked questions

How many investments has ClearSky made?: ClearSky has 75 tracked investments, 7 of which have exited, including 4 dated in the last 24 months.
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.
Does ClearSky lead rounds?: ClearSky has led 3 of the 13 rounds where its role is on record.
Who does ClearSky co-invest with?: ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 92 tracked co-investors.

Images

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$5M – $20M

Neulogy Ventures

Neulogy Ventures is a venture capital firm backing early-stage technology companies, with a focus on ambitious ideas across technology, climate and health, primarily in the Central and Eastern Europe region.

$216K – $3.2M

Daiwa House Ventures

Daiwa House Ventures is the corporate venture capital arm of Daiwa House Group (a housing, construction, and real estate group), investing in startups that help solve social challenges and create customer value across the group's industries.

DNV Ventures

DNV Ventures is the corporate venture arm of DNV, investing in startups aligned with DNV's purpose of safeguarding life, property, and the environment.