How many investments has ClearSky made?

ClearSky has 67 tracked investments, 3 of which have exited via acquisition or IPO.

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.

Who does ClearSky co-invest with?

ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 87 tracked co-investors.

ClearSky

Venture capitalActively deployingoperating company · company profile

West Palm Beach · Seed–Growth · 16 people tracked

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

★ Follow + Add to CRM ⤳ Find an introduction

✨ 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 Aug 25, 2026.

Stage

Seed–Growth

West Palm Beach, Florida, US

Instruments

Equity

Founded

2012

AUM

$1B

VC funds

Tracked investments

Team · 16 people

from the firm's website & 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

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 33 of 73 portfolio companies

Cybersecurity ×18AI & Machine Learning ×13Enterprise Software ×13SaaS ×11Energy ×10Cloud Computing ×6Cleantech ×3Data & Infrastructure ×3

HQs:United States×33Israel×1

Who they back

founder profiles across 26 portfolio companies

73%

solo founders

19 of 26 mapped founding teams

27%

repeat founders

of 11 founders with career history

Founding team size:solo founder×192 founders×7

Investments · 73 tracked

founders shown can be your intro path

By year:2024 · 3 2021 · 1 2020 · 1 2019 · 1 2018 · 3 2017 · 2 2016 · 2 2015 · 114 dated

Ubicquiaubicquia.com in 𝕏✓ 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)Lowell Kraff(Chairman, Co-Founder)David Herlong(Executive Officer)Heather Ritchie(Executive Officer)Santiago Serrano(Executive Officer)Kyle Brown(Executive Officer)

Co-investorsFuel Venture Capital Marunouchi Innovation Partners

Cyber Global Risk ExchangeApr 2017SEC filingmedium confidence

Denver, US

Frederick H. Kneip(Chief Executive Officer)Anthony J Urbanovich(Chief Operating Officer)Jonathan SW Simkins(Chief Financial Officer)

BoardRobert R. Ackerman, Jr.(Director)Alexander Weiss(Director)in

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

Co-investorsScale Venture Partners Ten Eleven

Accuricsaccurics.com in 𝕏acquired by Tenable

Cloud ComputingCybersecurityEnterprise Software

Co-investorsFirebolt Ventures Management Company, Llc WestWave Capital

Altamira

AppOmniappomni.com in 𝕏

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)inBrendan O'Connor(Chief Strategy Officer and Co-Founder)Bridget Gleason(CRO and Chief Customer Officer)Tina Hawk(Chief People Officer)

BoardAriel Tseitlin(Director)inPatrick Heim(Director)

Co-investorsCisco Investments Inner Loop Capital Prosperity7 Ventures Scale Venture Partners Silicon Valley Data Capital Costanoa Ventures +2 more

Aquion Energy IncJan 2016

EnergyPittsburgh, US

Jay Whitacre(Executive Officer, Director)John Connolly(Executive Officer)Scott A. Pearson(Executive Officer, Director)Scott A Pearson(Executive Officer, Director)Theodore Wiley(Executive Officer)

BoardRay Lane(Director)

Co-investorsFoundation Capital Kleiner Perkins TriplePoint Capital

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 +14 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)inRamesh Rajagopal(Founder)

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

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 LearningSan Carlos, US

Avinash Nair(Founder)Gregory Sands(Director)Matthew Cox(Executive Officer, Director)

Co-investorsJetBlue Ventures New North Ventures Scout Ventures Scout Ventures SKY VC

BHI Energy

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(Secretary, Director)inDimitri Sirota(President, Treasurer, Chief Executive Officer, Director)in

BoardGil Beyda(Director)inEd Sim(Director)in

Co-investorsBessemer Venture Partners boldstart ventures Cisco Investments Comcast Ventures Gaia Ventures Glynn Capital Management +8 more

Blue Lavablue-lava.net

Menlo Park, US

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

BoardJay Leek(Director)Charles Beeler(Director)

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

Capsule8capsule8.comacquired 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

Cleartrace Technologies Inc

Climate Trade

Cloudgenix Inc

Cloudknox Security Inc inAug 2018

Sunnyvale, US

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

BoardJay Leek(Director)

Cylance Inc

Databricks

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)Slavik 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 provides a Kubernetes platform with container-native networking and distributed storage for on-premises, hybrid, and multi-cloud deployments, including Kubernetes-native VMs, self-service Postgres, and AI/ML (LLMOps) solutions.

Cloud ComputingData & InfrastructureEnterprise Software

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 Lockheed Martin Ventures Yaletown Partners

Fermata Energy Llc

Field Group As F K A Precisionhawk Inc

Fortress Security Holdings LlcApr 2020

Orlando, US

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

Greensmith Energy Management Systems Inc

EnergyRockville, US

John Jung(Executive Officer, Director)Jim Murphy(Executive Officer)Steven Foster(Director)

BoardKevin Reid(Director)James Huff(Director)inPatrick Bischoff(Director)

Co-investorsBLUE LAGOON CAPITAL

Guardzguardz.com in 𝕏

Guardz offers a unified, AI-powered cybersecurity platform with 24/7 managed detection and response (MDR) that consolidates security controls across identities, endpoints, email, cloud, and data.

AI & Machine LearningCybersecuritySaaS

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

Harness

Hatz AIJan 2024 · $2.5M

New York, US

James Hatzell(Executive Officer, Director, Promoter)

BoardAidan Kehoe(Director)Frazer Anderson(Director)

Co-investorsDVx Ventures Nadia Partners RSE Ventures Vestigo Ventures

HUMAN

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)Michael Tiffany(Co-founder)Dan Kaminsky(Co-founder)Ash Kalb(Co-founder)

Co-investorsCanaan Partners DCVC (Data Collective)Evolution VC Partners Grit Capital Partners Gula Tech Adventures NightDragon +2 more

IControl Networks

Co-investorsCisco Investments Comcast Ventures Kleiner Perkins Silver Lake Partners

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

Co-investorsInsight Partners

Intsights Cyber Intelligence LtdFeb 2017

Herzeliya

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

Co-investorsGlilot Capital Partners

Is5 Communications Inc

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

Co-investorsEntrée Capital Mindset Venture McCarthy Capital Selah Ventures

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 General Catalyst Pictet Group +1 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)inCharlie Thomasin

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

Mod Wind

NEXTrackernextracker.com

Fremont, US

Wade Woodson(Director)Robert Zapotosky(Executive Officer)Bruce Ledesma(Director)Suvi Sharma(Director)Daniel Shugar(Executive Officer, Director)

BoardNancy Pfund(Director)

Co-investorsDBL Partners SJF Ventures

Nikola CorporationJun 2021

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)

Co-investorsCapital Q® Ventures Inc.

Noda Inc

Novinium IncMar 2015

Auburn, US

GLEN J. BERTINI(Executive Officer, Director)DAVID L. LEWIS(Executive Officer, Director)

BoardDAVID GRIEST(Director)BROOKE WADE(Director)PIERRE FESTAL(Director)inJAMES HUFF(Director)in

Co-investorsPromus Ventures

Optiv

Phylumphylum.io in 𝕏acquired by Veracode

CybersecurityDeveloper ToolsEnterprise Software

Co-investorsAtlassian Ventures Aviso Ventures Ballistic Ventures First In SixThirty Ventures

Pike Corporation

Powerphase Llc

Preempt Security Inc

San Francisco, US

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

BoardSteve Herrod(Director)

Co-investorsBlackstone General Catalyst Intel Capital

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)MATTHEW CHRISTENSEN(Director)

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

Co-investorsGolub Growth Long Ridge Equity Partners

ProtectWiseSep 2018

Denver, US

Gene Stevens(Executive Officer, Director)Scott Chasin(Executive Officer, Director)Ramon Peypoch(Director)

BoardJay Leek(Director)Larry Orr(Director)inMatt Bigge(Director)in

Co-investorsSyn Ventures Seed Management Llc Tola Capital Crosslink Capital Trinity Ventures

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(Executive Officer, Director)inAndrew Maloney(Executive Officer, Director)

BoardJay 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

Red Owl

Renewhomerenewhome.com in

Renew Home operates a residential energy management platform that embeds energy-smart features into connected home devices, starting with smart thermostats, to automatically shift energy usage to cheaper, cleaner, or lower-demand times.

CleantechEnergyIoT

Co-investorsCity Light

Resilient Systems

Respond Software Inc

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)

Co-investorsLauder Partners SoftBank Group

Sec Zettaseczetta.comAug 2019

Fall River, US

David Pignolet(President)

BoardJay Leek(Director)Zackary King King(Director)Art Coviello(Director)in

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

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)in

Co-investorsAndreessen Horowitz Time Zero Capital

SKOUT Cybersecuritygetskout.com in 𝕏acquired by Barracuda Networks

AI & Machine LearningCybersecuritySaaS

Co-investorsRSE Ventures

Solebit Labs Ltd

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)

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

Co-investorsZouk Capital EnerTech Capital Opus Capital

Spruce

Systems Controlsystemscontrol.com

Co-investorsWP Global Partners

T Rex Group Inc

EnergyNew York, US

Benjamin B. Cohen(Executive Officer, Director)Sean Schickendanz(Director)

BoardDavid Heron(Director)James Everett(Director)James McEntee(Director)

Co-investorsViola Ventures

Utility Innovation Holdings Inc

EnergyRaleigh, US

Sidney Hinton(Executive Officer, Director, Promoter)Noelle Forness(Executive Officer)

BoardJohn J Costello(Director)Kent Geer(Director)Bernard Noble(Director)Hannes Norrgren(Director)

Verengo

EnergyTorrance, US

Tom Foody(Executive Officer)Randall Bishop(Executive Officer, Director)Kenneth Button(Executive Officer, Director)Lou Kwiker(Director)Ken Button(Executive Officer, Director)

BoardZeb Rice(Director)

Verodinverodin.com

Mclean, US

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

BoardCharles 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

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

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 · 4

IPOs and acquisitions across the tracked portfolio

Accuricsacq. by TenableCapsule8acq. by SophosPhylumacq. by VeracodeSKOUT Cybersecurityacq. by Barracuda Networks

Portfolio news

latest coverage across their companies

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

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

Demisto · calcalistech.com · Apr 15, 2026

Skout — Grokipedia

Skout · grokipedia.com · Jan 14, 2026

Lumia Security Raises $18 Million for AI Security and Governance - SecurityWeek

Human Security · securityweek.com · Dec 5, 2025

Frequently asked questions

How many investments has ClearSky made?: ClearSky has 67 tracked investments, 3 of which have exited via acquisition or IPO.
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.
Who does ClearSky co-invest with?: ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 87 tracked co-investors.

Images

Similar investors

Khosla Ventures

Khosla Ventures is a venture capital firm that invests in early-stage companies focused on technology, mobile, and clean energy sectors, including biotechnology applications. The firm provides capital and strategic support to entrepreneurs developing breakthrough technologies across multiple markets.

$5K – $50M

Energy Impact Partners

Energy Impact Partners is an investment firm that connects entrepreneurs with major corporate partners to help drive the transformation of the global economy toward a more sustainable future.

$5M – $20M

Valor Capital Group

Valor Capital Group is a cross-border venture fund connecting the US, Latin American, and global technology markets, investing in consumer internet and enterprise software companies.

$100K – $5M

Clearvision Ventures

Clearvision Ventures is a venture firm founded by entrepreneurs, investing across stages from early to growth in companies driving sustainability disruptions in energy and infrastructure.

$1M – $25M

OUP (Osage University Partners)

OUP (Osage University Partners) is a venture firm that invests in science-driven startups commercializing deep technology innovations emerging from university and breakthrough research.

$1M – $20M