How many investments has ClearSky made?

ClearSky has 98 tracked investments, 13 of which have exited, including 3 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.

Who does ClearSky co-invest with?

ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 153 tracked co-investors.

What size deals does ClearSky back?

Across 5 deals with disclosed amounts, ClearSky has joined rounds of $6.5M – $106M (median $25M).

ClearSky

Venture capitalActively deployingoperating company · company profile

West Palm Beach · Seed–Growth · 20 people tracked

Also known as CLEARSKY ADVISORS LLC

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Investment thesis

ClearSky invests in innovative companies across two focus areas: cybersecurity and energy transition. On the cybersecurity side, it funds pioneers working to make the connected world safer, while its energy transition investments aim to accelerate cleaner energy and a more sustainable future. The firm emphasizes its core investment team's century-plus of combined experience across market cycles and more than a decade working together, giving it deep sector-specific and financial expertise. An extensive network of founders, CEOs, VCs, and advisors supports fund strategy and due diligence. ClearSky positions its sector experience and industry relationships as drivers of both sustainable solutions and portfolio returns.

Invests inCleantech Climate Tech Cybersecurity Energy Global West Palm Beach

Source: firm website, verified Sep 29, 2026.

Leave your own feedback

Stage

Seed–Growth

West Palm Beach, Florida, US

Instruments

Equity

Founded

2012

Last 12 months

2 investments

AUM

$1B

VC funds

Tracked investments

Unicorns

IPOs

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.

alex@clear-sky.com

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.

james@clear-sky.com

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.

erik@clear-sky.com

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.

robert@clear-sky.com

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

Founder mafia

2 people who came through ClearSky went on to found or lead other companies.

Joseph WrightChairman of the Investment CommitteeFounded Scientificgames Marlow BryantAssociateFounded Reflex Security

What they invest in

from 53 of 98 portfolio companies

Enterprise Software ×24AI & Machine Learning ×23Cybersecurity ×22SaaS ×20Energy ×14Cloud Computing ×10Cleantech ×5Developer Tools ×5

HQs:United States×45Sweden×2Czechia×1Israel×1Malaysia×1

Who they back

founder profiles across 41 portfolio companies

44%

solo founders

18 of 41 mapped founding teams

40%

repeat founders

of 42 founders with career history

~3 yrs

old at investment

median across 11 dated deals

Founding team size:solo founder×182 founders×133 founders×44+ founders×6

Where their founders studiedfrom 34 founders with education data

Massachusetts Institute of Technology ×4University of California, Berkeley ×3Bar-Ilan University ×2CUHK Business School ×2Harvard University ×2Indian Institute of Technology, Delhi ×2KTH Royal Institute of Technology ×2The Hebrew University of Jerusalem ×2

What their founders studiedfrom 38 founders with field-of-study data

Computer Science ×22Engineering ×11Business & Management ×7Economics ×3Finance & Accounting ×2

Where their founders worked beforefrom 42 founders with career history

Google ×6Besiktningsman.se ×2CYBEAR.co ×2Heads ×2McAfee ×2Microsoft ×2Netrise Firmware security ×2Salesforce ×2

Accelerator rootsportfolio companies that came through a program

Y Combinator ×2

6 founders hold a PhD · 9 hold an MBA (of 39 with degree data)

Investments · 98 tracked

founders shown can be your intro path

By year:2026 · 2 2024 · 4 2022 · 1 2021 · 3 2020 · 1 2019 · 2 2018 · 5 2017 · 2 2016 · 2 2015 · 123 dated

Cylanceblackberry.com inNYSE: BBAcquired

BlackBerry operates two divisions focused on security and innovation: one providing end-to-end encryption and zero-trust identity control for governments and critical industries, and another offering QNX embedded software and real-time operating systems used in over 275 million vehicles worldwide.

CybersecurityEnterprise SoftwareIoTIrvine, US

Stuart McClure(Founder)inJeffrey Ishmael(Executive Officer)Mike Lazaridis(Founder)Ryan Permeh(Founder)Daniel Mendez(Founder)Prasad Wagle(Founder)

Co-investorsCrosslink Capital Dell Technologies Capital Draper Associates In-Q-Tel Junipero Khosla Ventures +10 more

Palo Alto Networkspaloaltonetworks.com in 𝕏NASDAQ: PANW

Palo Alto Networks provides cybersecurity platforms and services to protect organizations' digital infrastructure across cloud, network, and security operations.

AI & Machine LearningCloud ComputingCybersecurityEnterprise SoftwareCupertino, US

Nir Zuk(Founder)Nikesh Arora(Chairman and Chief Executive Officer)inDipak Golechha(Chief Financial Officer)inWilliam “BJ” Jenkins(President)Lee Klarich(Chief Product and Technology Officer and Director)Dan Sarel(Founder)

Co-investorsBain Capital Ventures Globespan Capital Partners Greylock Partners Icon Ventures Sequoia Capital Battery Ventures +2 more

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 𝕏acquired by Tenable

Cloud ComputingCybersecurityEnterprise Software

Co-investorsFirebolt Ventures Management Company, Llc WestWave Capital

Alunaalunadata.com in

Aluna Data provides a benchmarking suite for oncology AI models, offering standardized datasets including over 2 million whole slide images across 25+ tumor types with pathologist annotations, whole genome sequencing data, and clinical information for cancer research and AI development.

AI & Machine LearningBiotechDeveloper ToolsEnterprise SoftwareMedical DevicesSan Francisco, US

David Chu(CEO)inCharvi Shetty(Founder)John FinbergWill Hopkins(CTO)

Co-investorsCreative HQ — The Incubator Titan Capital Y Combinator Blue Bear Ventures

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(Founder)in Brendan O'Connor(Founder)in 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

Aquion Energyaquionenergy.com

A content site publishing buying guides and reviews about batteries, solar panels, and energy storage products for consumers and homeowners.

ConsumerEnergyMedia & Entertainment

Jay Whitacre(Founder)

Co-investorsFoundation 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 SoftwareSaaSEden Prairie, US

Brian NeSmith(Founder)inKim Tremblay(Founder)

Co-investors1435 Capital 33N Artisanal Ventures Blue Cloud Ventures Blue Owl Capital Bright Pixel Capital +21 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

Auto Gridauto-grid.com

Amit Narayan(Founder)

Co-investorsClearvision Ventures Energy Impact Partners Foundation Capital GS Futures SE Ventures Voyager Capital+1 more

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-investorsAlpha Startups Pre-Accelerator JetBlue Ventures New North Ventures Scout Ventures Scout Ventures Silent Capital +3 more

Beacon AIbeacon.ai

Andrew Musto(Founder)Avinash Nair(Founder)Matt Cox(Founder)

Co-investorsGeneral Catalyst New North Ventures

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(Founder)in Dimitri Sirota(Founder)in

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

Co-investorsBessemer Venture Partners boldstart ventures Cisco Investments Collective Liquidity Comcast Ventures Gaia Ventures +15 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

Cloudknoxcloudknox.io

Cybersecurity company acquired by Microsoft.

Co-investorsDell Technologies Capital Syn Ventures Seed Management Llc Titanium Ventures Wipro Ventures

Cloudknox Security Inc inAug 2018

Sunnyvale, US

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

Board Jay Leek(Director)in

Cybergrxcybergrx.comJan 2018Acquired

CyberGRX operated a third-party cyber risk exchange for assessing and prioritizing vendor risk; acquired by ProcessUnity in 2023.

Fred Kneip(Founder)

Co-investorsAllegisCyber Capital Bessemer Venture Partners Flyover Capital GV (Google Ventures)ICONIQ MassMutual Ventures +6 more

Databricksdatabricks.com in 𝕏

Databricks provides a unified platform for data engineering, analytics, and artificial intelligence, enabling organizations to build and deploy data and AI applications on cloud infrastructure.

AI & Machine LearningCloud ComputingData & InfrastructureEnterprise SoftwareSan Francisco, US

Ali Ghodsi(Founder)inIon Stoica(Founder)in Matei Zaharia(Founder)inReynold Xin(Founder)in Patrick Wendell(Founder)in Andy Konwinski(Founder)in

Co-investors137 Ventures A.Capital Ventures Aglae Ventures Alkeon Innovation Alpha Square Group Altra Venture +115 more

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 Wipro Ventures Brightmind +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

Amitava Guha(Founder)Gopal Sharma(Founder)Jeffrey Chou(Founder)Luis Robles(Founder)

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 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

Fieldfield.group in

Field is a geospatial technology company that captures, processes and delivers aerial and marine data using aircraft, LiDAR and sensors to produce 3D maps, models and digital twins.

Construction TechDeep TechSaaS

Co-investorsSprettert Third Point Ventures Edison Partners

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

Alon Lavi(Founder)Alon Lavi Dor Eisner(Founder)Dor Eisner(Founder)

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

Harnessharness.io in 𝕏

Harness provides software delivery automation and infrastructure for engineering teams to deploy code reliably and efficiently.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSan Francisco, US

Jyoti Bansal(Founder)inRishi Singh(Founder)in

Co-investorsAlkeon Innovation Artisanal Ventures Battery Ventures Collective Liquidity Crosslink Capital Eniac Ventures +17 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

Ashur Kalb(Executive Officer)Tamer Hassan(Founder)in Michael Tiffany(Founder)inDan Kaminsky(Founder)Ash Kalb(Founder)in

BoardSteven Fredrick(Director)

Co-investors11.2 Capital Canaan Partners DCVC (Data Collective)Evolution VC Partners Grit Capital Partners Gula Tech Adventures +10 more

iControlicontrolapp.se in 𝕏

iControl offers a construction documentation platform used on-site during building production, letting teams upload drawings, invite colleagues, and access project information in the field, including offline.

Construction TechPropTechSaaS

Alexander Selling in Anton Fagerberg in

Co-investors500 Global Comcast Ventures Flyover Capital Intel Capital Kleiner Perkins

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

IntSightsintsights.com 𝕏acquired by Rapid7

AI & Machine LearningCloud ComputingCybersecuritySaaS

Co-investorsBlumberg Capital Qumra Capital Tola Capital Wipro Ventures

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 Yuval Abadi(Founder)inElad Schulman Ophir Dror(Founder)

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)inAdam Simpson(Founder)Matt Svrcek(Founder)

BoardTom Linebarger(Chairman & Chief Executive Officer)

Co-investorsKhosla Ventures Alumni Ventures DCVC (Data Collective)Fine Structures Ventures General Catalyst Marunouchi Innovation Partners +5 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-investorsCheyenne Ventures Kleiner Perkins One Equity Partners 8VC Accel Ballistic Ventures +3 more

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 Cisco Investments 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

Nikola Labsnikola.tech 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)Pablo Koziner(Executive Officer)Britton M. Worthen(Executive Officer)Kim J. Brady(Executive Officer)

BoardGerrit A. Marx(Director)Jeffrey W. Ubben(Director)

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-investorsBessemer Venture Partners Booz Allen Ventures Draper Associates noa Reshape

Noda Intelligent Systems ABnoda.se in

NODA develops AI-powered software solutions for optimizing thermal energy systems, including district heating/cooling networks, building clusters, and industrial infrastructure.

AI & Machine LearningClimate TechEnergyPropTechSweden, SE

Christian Johansson(Founder)

Co-investorsLongRun Capital Northzone

Noviniumnovinium.comMar 2015

Auburn, US

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

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

Co-investorsE8 Angels SJF Ventures Promus Ventures

OneStoptheinterface.com in

Interface researches how information is structured for AI agents and develops transaction platforms for them, including OneStop, a marketplace aggregating AI services.

AI & Machine LearningConsumerNew York City, US

Max Raven(CEO)in Peyton Shields(CTO)inAaryan Mehta(Founder)Thomas Lee Young(Founder)

Co-investorsPioneer Transpose Platform Management Y Combinator Avataar Venture Partners Capitalize VC Category Ventures +17 more

Optivoptiv.com in 𝕏

Optiv is a cybersecurity company that provides managed security services, incident response, and consulting to help organizations detect and manage cyber threats.

AI & Machine LearningCybersecurityEnterprise Software

Kevin Lynch(Chief Executive Officer)inWilliam Crouch(Executive Vice President and General Counsel)Heather Rim(Chief Marketing Officer)in Marc Cabi(Chief Financial Officer)in John Hurley(Chief Revenue Officer)inDaniel Wilbricht(Executive Vice President, Optiv + ClearShark President)

Co-investorsTen Eleven ACE & Company Investcorp

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

Veracode provides an application security platform that uses AI-driven analysis and proprietary data to assess software risk across code, dependencies, and pipelines.

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 Olima Ventures Service Provider Capital First In+2 more

Pikeusepike.com

Pike is an agency management system that combines projects, time, resource planning, and finances in one tool, with capacity and margin visibility for proposed and confirmed work.

Enterprise SoftwareFuture of WorkSaaS

Cody V(Founder)Kyle J.(Founder)Sebastien D(Founder)

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 Scale Venture Partners Long Ridge Equity 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 Homegrown Capital Syn Ventures Seed Management Llc Tech Square 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 ToolsSan Francisco, US

Jyoti Bansal(Founder)inRishi Singh(Co-Founder & Board Member)Manish Gupta(Founder)

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

Red Owlredowl.comacquired by Forcepoint · Aug 2017 · $54M

Insider-threat behavioral analytics platform for information security; acquired by Forcepoint.

Baltimore, US

Guy Filippelli(Executive Officer, Director)in

BoardChristopher College(Director)Matthew Hallam(Director)Jay Leek(Director)inElad Yoran(Director)Nicholas Hallam(Director)

Co-investorsScout Ventures Scout Ventures Syn Ventures Seed Management Llc TCP Venture Capital ALLEGIS CAPITAL Blackstone +1 more

Renew Homerenewhome.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 Carrier Ventures

Respond.iorespond.io in 𝕏

Respond.io is a customer conversation platform for mid-market B2C businesses that integrates omnichannel messaging, native AI agents, and CRM context into a unified system to route inbound conversations and improve conversion rates.

AI & Machine LearningEnterprise SoftwareMarketing TechSaaSSales TechKuala Lumpur, MY

Gerardo Salandra(Founder)inIaroslav Kudritskiy(Founder)in Hassan Ahmed(Founder)in

Co-investorsAltaIR Capital Beyond Ventures Camber Partners Smart Partnership Capital Greylock Partners Headline +2 more

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)inMikkel Vestergaard Fr(Founder)

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

Sentient Energysentientenergy.com

Sentient Energy provides grid modernization hardware and analytics—including line sensors and dynamic VAR controllers—that give electric utilities visibility and control over the distribution grid from substation to the last transformer.

CleantechEnergyIoT

Co-investorsFoundation Capital

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)Chris Key(Founder)

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

Co-investorsBessemer Venture Partners Cheyenne Ventures Cisco Investments Crosslink Capital Syn Ventures Seed Management Llc Ten Eleven +4 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 Anzu Partners Climate Innovation Capital Constellation Technology Ventures Thin Line Capital Valo 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 EnergyClearTraceCleartrace Technologies IncCloudgenix IncField Group As F K A Precisionhawk IncFortress Security Holdings LlcGreensmithGreensmith Energy Management Systems IncHUMANIControl NetworksInkyIntsights Cyber Intelligence LtdiS5Is5 Communications IncMainspringMod WindNikolaPike CorporationPowerphase LlcPreempt Security Inc ProtectWiseResilient SystemsRespond Software IncSecurity AdvisorSolebitSolebit Labs LtdSpruceSystems ControlT RexT Rex Group IncUtility Innovation GroupUtility 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 · 13

2 IPOs · 11 acquisitions · showing 9

CylanceNYSE: BBPalo Alto NetworksNASDAQ: PANWAccuricsacq. by TenableCapsule8acq. by SophosIControl Networksacq. by Comcast (Converge platform) and Alarm.com (Connect/Piper businesses)IntSightsacq. by Rapid7Phylumacq. by VeracodeRed Owlacq. by ForcepointSKOUT Cybersecurityacq. by Barracuda Networks

Portfolio news

latest coverage across their companies

Databricks Acquires Row Zero, Bringing Live, Governed Spreadsheets to Genie

Databricks · databricks.com · Sep 24, 2026

Palo Alto Networks paid $500M for Thrive-backed Console, sources say

Palo Alto Networks · techcrunch.com · Sep 2, 2026

$2 billion in contracts, reached in less than half the time. CrowdStrike and Optiv did it.

Optiv · stocktitan.net · Sep 1, 2026

Respond.io raises $62.5M Series B to expand its customer conversation management platform globally

Respond.io · respond.io · Aug 10, 2026

Ubicquia Raises $106M in Series D Funding

Ubicquia · finsmes.com · Feb 23, 2026

Sceye Receives Investment from SoftBank Corp

Sceye · finsmes.com · Jun 27, 2025

$56M Series B Fuels the Guardz Mission to Empower MSPs with an AI-Native Unified Cybersecurity Platform | Guardz.com

Guardz · guardz.com · Jun 12, 2025

Frequently asked questions

How many investments has ClearSky made?: ClearSky has 98 tracked investments, 13 of which have exited, including 3 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.
Who does ClearSky co-invest with?: ClearSky most often shares deals with Syn Ventures Seed Management Llc, Cisco Investments, Bessemer Venture Partners, among 153 tracked co-investors.
What size deals does ClearSky back?: Across 5 deals with disclosed amounts, ClearSky has joined rounds of $6.5M – $106M (median $25M).

Media · Podcasts & interviews

featuring the team

Cyber Spotlight: Are you building a feature or a company? - Jay Leek, Managing Partner at ClearSky

YL Ventures · Jay Leek

Images

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