S3 Ventures β Full Portfolio
142 tracked investments Β· listed companies and verified rows first
Plano, US
Gary Nelson(Director)David Becker(Executive Officer)Jeff Chambers(Executive Officer)Hansen C. Michael(Executive Officer, Director)Jeffery Chambers(Executive Officer)
BoardBrian R. Smith(Director)in
Board seatBrian SmithCharlie PlaucheΒ· per SEC Form D Β· $140M raise Β· filed Oct 2020
VUV Analytics develops vacuum ultraviolet (VUV) spectroscopy instruments and detectors for chemical analysis, including detectors for gas and liquid chromatography used in analytical laboratories.
Deep TechHardwareNew MaterialsCedar Park, US
Dale Harrison(Executive Officer)Sean Jameson(Executive Officer, Director)Joseph H. Timko(Director)Kirk Patterson(Executive Officer)Clark Jernigan(Executive Officer, Director)
Board seatBrian SmithEric EngineerΒ· per SEC Form D
Co-investorsNew Science Ventures
Liquibase provides a platform for governing and automating database change management across pipelines, platforms, and teams, integrating with tools like ServiceNow, GitHub, Harness, and Terraform.
Data & InfrastructureDeveloper ToolsEnterprise Software
Robert(Co-founder)Pete(Co-founder)Nathan(Founder (Liquibase open-source project))Patti(Chief Executive Officer)Ryan(Chief Customer Officer / Customer Success)Steve Surace(Vice President of Engineering)
Co-investorsRiver Cities CapitalMercury Fund
Mythic builds analog processing units based on compute-in-memory architecture designed to run AI workloads efficiently in real-world applications.
AI & Machine LearningHardwareSemiconductorsPalo Alto, US
Taner Ozcelik(CEO / Board Member)Steven Pho(CFO)
Co-investorsCatapult VenturesNew Enterprise Associates (NEA)Atreides ManagementDCVC (Data Collective)Linse CapitalLockheed Martin Ventures+7 more
SpectraWAVE develops optical and computational imaging technologies to diagnose and guide treatment decisions for patients with coronary artery disease and cardiovascular disease.
AI & Machine LearningDeep TechHealthtechMedical DevicesBedford, US
Eman Namati(President & CEO)Guillermo Tearney(Founder; Professor of Pathology, Massachusetts General Hospital)Gregg Stone(Founder; Professor of Medicine, Mount Sinai Heart Health System)James Muller(Founder; Cardiologist, Brigham and Women's Hospital)Jeffrey O'Donnell(Founder; Managing General Partner, Runway Healthcare)Vivek Walimbe(Chief Operating Officer)
Co-investorsLumira VenturesSV Health InvestorsDeerfield Management CompanyJohnson & Johnson Innovation β JJDC
Arpio provides an automated disaster recovery platform purpose-built for AWS and Azure cloud applications.
Cloud ComputingCybersecurityData & InfrastructureEnterprise SoftwareSaaSDurham, US
Doug Neumann(Founder)inShaw Terwilliger(Founder)in
Board seatEric EngineerΒ· per SEC Form D
Co-investorsCompanyon VenturesCreativeCoDraper AssociatesIDEA NCPaladin Capital GroupY Combinator+2 more
BrainCheck offers a platform for cognitive assessment and care planning, centered on an FDA-registered Class II digital cognitive assessment plus over 30 clinical evaluation tools that integrate into clinical workflows and EHR systems like Epic and athenahealth.
Digital HealthHealthtechMedical DevicesSaaSHouston, US
Yael Katz(Executive Officer, Director)inDavid Eagleman(Executive Officer, Director)Andrew Chen(Founder)in
Board seatCharlie PlaucheΒ· per SEC Form D
Co-investorsBlue Hour VenturesNext Coast VenturesNueterra CapitalTensility Venture PartnersTrue Wealth Ventures
Austin, US
J. Kevin Nater(Executive Officer, Director)Scott Schaefer(Executive Officer)Stephen Smith(Executive Officer)John Craparo(Executive Officer)Kevin Nater(Executive Officer, Director)Charles Studor(Executive Officer, Director)
Board seatEric EngineerΒ· per SEC Form D
Denver, US
Guy Saxelby(Executive Officer, Director)Scott Spolansky(Executive Officer)
BoardAnthony Millet(Director)David Saxelby(Director)
Board seatCharlie PlaucheΒ· per SEC Form D Β· $17.6M raise Β· filed Jun 2026
Co-investorsAntlerBrick Mortar Ventures
Denver, US
Jeremy Becker(Executive Officer, Promoter)Adam Zucker(Executive Officer, Director, Promoter)Taylor McLemore(Director)
BoardPeter Solvik(Director)in
Board seatCharlie PlaucheΒ· per SEC Form D Β· $8.8M raise Β· filed Jan 2026
Co-investorsJackson Square Ventures
Interplay Learning builds online skilled trades courses designed and delivered by industry experts and instructional designers, covering foundational technical knowledge and real-world applications for technicians.
EdTechEnterprise SoftwareFuture of WorkHR TechSaaSAustin, US
Douglas Donovan(Executive Officer, Director)
BoardIan Chiu(Director)Richard Waitumbi(Director)Sam Decker(Director)Kimberly Caldbeck(Director)
Board seatCharlie PlaucheΒ· per SEC Form D
Co-investorsCathexis VenturesCentral Texas Angel NetworkCerity Partners VenturesOwl VenturesSierra VenturesSJF Ventures+3 more
Kamiwaza offers a distributed AI orchestration platform that processes data where it resides, allowing enterprises to deploy AI without centralizing data or compromising security.
AI & Machine LearningData & InfrastructureEnterprise SoftwareGovTechSilverthorne, US
Matthew Wallace(Executive Officer, Director)Luke Matthew Norris(Executive Officer, Director)
Board seatEric EngineerΒ· per SEC Form D
Co-investorsAscend Venture CapitalCitta CapitalFirstMile VenturesGreater Colorado Venture FundAscendPioneer Square Ventures
MontyCloud is a no-code, autonomous CloudOps platform that helps IT teams optimize and operate cloud services using intelligent automation and AI.
AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareRedmond, US
Venkat Krishnamachari(Chief Product Officer & Co-Founder)Kannan Parthasarthy(Chief Technology Officer & Co-Founder)Rajkumar Sivarajan(Executive Officer)Walter A. Rogers(Executive Officer, Director)VENKATESWARAN HARIHARA SUBRAMANIAN(Executive Officer)
BoardSteve Berg(Director)in
Board seatEric EngineerΒ· per SEC Form D
Co-investors1809 CapitalMadrona Venture GroupRaptor GroupRiverside Acceleration CapitalLytical Ventures
Prokeep offers a centralized communication platform that lets parts departments handle customer messages across text, email, fax, and web chat, with features like picture messaging, automated order status updates, and inventory checks.
AI & Machine LearningLogistics & Supply ChainMarketing TechSaaSSales TechNew Orleans, US
McKay Johnson(Founder)inMark Kanof(Founder)inJohn F. Carrere, III(Executive Officer, Director)
BoardTy Findley(Director)John Giannuzzi(Director)
Board seatCharlie PlaucheΒ· per SEC Form D
Co-investorsCallais Capital ManagementIronspring Venture
QbDVision offers a Digital CMC (Chemistry, Manufacturing, and Controls) SaaS platform that captures structured, versioned pharmaceutical development data and provides end-to-end product lifecycle management from R&D through commercial manufacturing.
BiotechHealthtechSaaSAustin, US
Board seatEric EngineerΒ· per SEC Form D
Co-investorsCartmell VenturesCREATE HEALTH VENTURES
Austin, US
Leo Resig(Executive Officer, Director, Promoter)John Resig(Executive Officer, Director, Promoter)Jon Shulkin(Director)Mike Grisko(Executive Officer)
Board seatCharlie PlaucheΒ· per SEC Form D Β· $105M raise Β· filed Feb 2023
Co-investorsTrinity Capital
Chapel Hill, US
RYAN WALSH(Executive Officer, Director)M. SCOT WINGO(Director)
BoardRICHARD FRAIM(Director)in
Board seatEric EngineerΒ· per SEC Form D
Co-investorsAlerion VenturesKnoll VenturesGTMfundTDF Ventures
HealthtechAustin, US
Kim Bridges-Rodriguez(Executive Officer, Director)inIan Ratcliffe(Director)Joe S Andrasko(Director)Jeremy McFadden(Executive Officer)
BoardBrian R Smith(Director)in
Alkami is a digital banking software platform for financial institutions including community and regional banks and credit unions.
Data & InfrastructureEnterprise SoftwareFintechMarketing TechSaaS
Mike Shootman(President and Chief Executive Officer)
Co-investorsMissionOGPlains Ventures
Alleviant Medical develops an investigational minimally invasive medical device using interatrial shunt therapy to treat heart failure patients, currently in FDA-approved clinical trials (ALLAY-HF and ALLAY-HFrEF).
BiotechHealthtechMedical DevicesAustin, US
Adam Berman(Executive Officer, Director)Jacob Kriegel(Executive Officer, Director)Avni Patel(Executive Officer, Director)Christopher Alex Arevalos(Executive Officer, Director)Albertien Greijdanus(Executive Officer, Director)
BoardGeoff Pardo(Director)
Co-investorsBroadview VenturesRiverVest Venture PartnersTMC Venture FundCadence Healthcare VenturesGilde HealthcareGilmartin Capital LLC+1 more
Allstacks is an AI-agent platform that connects data from software development tools (Jira, GitHub, GitLab, Jenkins) to provide engineering teams and leaders with delivery metrics, risk alerts, and recommendations for planning, managing, and optimizing software creation.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareRaleigh, US
Jeremy Freeman(Founder)Hersh A. Tapadia(Executive Officer, Director)Hersh Tapadia(Founder)inDarrell J. Freeman, Jr.(Executive Officer, Director)Scot Sherwood(Director)
BoardAndrew Drylie(Director)in
Co-investorsAtlassian VenturesCompanyon VenturesCreativeCoFirst Rays Venture PartnersGutbrain VenturesHyperplane Venture Capital+7 more
Co-investorsSageview Capital
Buildforce runs a platform that matches electrical contractors with pre-vetted, background-checked electricians for short-term or temp-to-hire work, and handles onboarding, GPS time tracking, compliance, and payroll.
B2B MarketplacesConstruction TechHR TechHouston, US
Vu Brown(Founder)
PartnerAaron PermanΒ· led
Co-investorsGrid CapitalMercury FundTDF Ventures
CereTax is a cloud-native, AI-powered platform for indirect tax that automates sales and use tax compliance across many jurisdictions.
AI & Machine LearningCloud ComputingEnterprise SoftwareFintechSaaSAlpharetta, US
Brent Reeves(Executive Officer, Director)inMike(Founder)inSteven Michael Sanders(Executive Officer, Director)
BoardAaron Perman(Director)inStephen DeBacco(Director)Robert Alvarez(Director)
PartnerAaron PermanΒ· led
Plural is an AI-powered platform that helps enterprises and organizations analyze legislation and anticipate policy impacts through bill summarization, topic detection, advanced search, and tracking across state and federal jurisdictions.
AI & Machine LearningGovTechLegalTechMounds View, US
DAMOLA OGUNDIPE(Executive Officer, Director)Damola Ogundipe(Founder)in
Co-investorsBackstage CapitalDebut CapitalTechstars
PartnerAaron PermanΒ· led
DataBahn builds a data pipeline platform that handles ingestion, enrichment, governance, and AI readiness of data for enterprise security teams.
AI & Machine LearningCybersecurityData & InfrastructureEnterprise SoftwareDallas, US
Nanda Santhana(Chief Executive Officer)Nithyalakshmi Nareshkumar(Chief Operating Officer)
BoardErnie Bio(Director)
PartnerAaron PermanΒ· led
Co-investorsForgePoint CapitalGTM CapitalSprout Oak
Austin, US
Sundeep Goel(Executive Officer, Director)
BoardRajiv Bala(Director)Mohammad S Siddiqui(Director)
Co-investorsAmplify.LAFlyover CapitalKnoll VenturesTuesday Capital
A construction-native dynamic discounting marketplace that converts general contractor balance-sheet capital into yield while providing subcontractors with debt-free early payments.
Favor is a restaurant food delivery app focused exclusively on Texas, connecting local diners with local restaurants and delivering meals to their doors.
FoodTechLogistics & Supply ChainMarketplaces
Co-investorsCorsa VenturesSilverton Partners
Austin, US
Raghunath Sapuram(Executive Officer, Director)Mohammed Farooq(Executive Officer, Director)Ken Kieley(Executive Officer)Brad Anderson(Executive Officer, Director)Tim Galligan(Executive Officer)Manish Modh(Executive Officer)
HYAS provides a preemptive cyber defense platform that uses DNS activity analysis and Indicators of Future Attack to identify and neutralize threats before compromise.
CybersecurityData & InfrastructureSaaSNanaimo
CHRIS DAVIS(Executive Officer, Director)JEFF SPENCER(Executive Officer, Director)
BoardOWEN MATTHEWS(Director)TIM EADES(Director)MATTHEW GOLDSTEIN(Director)
Co-investorsCyber Mentor FundDcode CapitalM12 (Microsoft's Venture Fund)Wesley Clover International Corporation
PartnerAaron PermanΒ· led
Interplay makes PlayTach, a smart device that attaches to a dog's crate and pairs with a mobile app, letting dog owners remotely dispense food and water, see and hear their pet via a built-in camera, play music, speak to them, and unlock the crate.
ConsumerHardwareIoTKansas City, US
Co-investorsTechstarsOwl VenturesThe Venture Reality Fund
PartnerEric EngineerΒ· led
Austin, US
Daniel Gillett(Executive Officer, Director)
BoardDan Meyer(Director)Brian R Smith(Director)
LeanDNA offers APEX, a supply chain execution platform that turns manufacturing data into predictive insights and prioritized actions to help procurement and production teams reduce inventory shortages and excess and improve on-time delivery.
Advanced ManufacturingLogistics & Supply ChainSaaSAustin, US
Richard Lebovitz(Executive Officer, Director)
BoardRony Kahan(Director)Michael Smerklo(Director)in
Co-investorsAccel-KKRNext Coast Ventures
Levelset provides a platform for contractors and suppliers in the construction industry to manage payment documentation and processing, reducing payment delays and disputes.
Construction TechEnterprise SoftwareFintechSaaSNew Orleans, US
Co-investorsBrick Mortar VenturesGrand VenturesHorizons VenturesNew Orleans Startup FundAltos Ventures
Acquired by R.R.
FintechInsurTechSaaSAustin, US
Andrew Ambrose(Executive Officer, Director)Peter Rung(Executive Officer, Director)
BoardJohn Velasquez(Director)
Co-investorsRunway Venture PartnersTechstars
Mavvrik provides a platform for real-time financial control and cost management across cloud, on-premise, and AI spending.
AI & Machine LearningCloud ComputingEnterprise SoftwareSaaSAustin, US
Darmawan Suwirya(Founder)in
Co-investorsFlyover CapitalKnoll VenturesTech Square VenturesAmplify.LATuesday Capital
PartnerAaron PermanΒ· led
OutboundEngine provides a done-for-you marketing platform for small businesses, automating brand building, pipeline generation, and client outreach.
Marketing TechSaaSSales TechAustin, US
Branndon Stewart(Executive Officer, Director)Henrik Johansson(Director)Frank Livaudais(Executive Officer)Tom Sloss(Executive Officer)Scott Leese(Executive Officer)
BoardRajiv Bala(Director)
Co-investorsAlerion VenturesEscalate Capital PartnersHarmony PartnersSilverton PartnersFloodgate
PartnerAaron PermanΒ· led
Riscosity provides an automated platform for securing sensitive data in transit, detecting and controlling outbound data transfers across a company's tech stack.
AI & Machine LearningCybersecurityData & InfrastructureSaaS
Co-investorsWipro VenturesSecure Octane
SantΓ© builds a point-of-sale system designed specifically for liquor retail stores.
AI & Machine LearningEnterprise SoftwareFintechRetail TechSaaSNew York City, US
Darren Fike(Founder)in
Co-investorsBonfire VenturesKima VenturesOperator CollectiveTrail Run CapitalVeridical VenturesY Combinator+2 more
HealthtechHouston, US
Michael Magnani(Executive Officer, Director)Mehdi Razavi(Executive Officer, Director)
BoardGill M. Jack(Director)Milton Morris(Director)Daniel Steppe(Director)
Co-investorsBaird Capital
PartnerAaron PermanΒ· led
Stellar provides on-demand home services including plumbing, HVAC, electrical, and fencing repairs, pairing vetted tradespeople with online booking, transparent quotes, and real-time job tracking.
ConsumerMarketplacesPropTech
Co-investorsAlerion VenturesBrick Mortar VenturesStellifiWeatherford CapitalNavigate Ventures
Austin, US
Rose Punkunus(Executive Officer, Director)
BoardMar Hershenson(Director)
PartnerAaron PermanΒ· led
Suite Studios offers a file streaming product that lets teams access and work with cloud-stored files in real time without pre-downloading or syncing, with cloud storage that mounts like a local SSD.
Cloud ComputingCreator EconomyMedia & EntertainmentSaaSBoulder, US
Craig Hering(CEO & Co-Founder)inMichael Hering(Founder)inMike Hering(CTO & Co-Founder)Jay Maxwell(CPO & Co-Founder)James D. Maxwell(Executive Officer, Promoter)Michael F. Hering(Executive Officer, Promoter)
Co-investorsBonfire VenturesRange VCGrotech VenturesMassiveThe Fund
Sunthetics develops machine learning algorithms and software for chemical engineering applications.
AI & Machine LearningCleantechDeep TechNew MaterialsSaaSNew York City, US
Daniela Blanco(Executive Officer, Director)
BoardLaura Lucas(Director)
PartnerAaron PermanΒ· led
Co-investorsTechstarsVirta VenturesL'ATTITUDE VenturesREFASHIOND Ventures
Austin, US
Duncan Van Dusen(Executive Officer, Director)Pete Pearson(Executive Officer)Christopher T Praisner(Executive Officer)Christopher Todd Praisner(Executive Officer, Director)
BoardBrian R Smith(Director)inMichael P Turner(Director)
Company building autonomous AI agents for data engineering; acquired by Snowflake
Biraj Silwal(Founder)in
Co-investorsBee PartnersGlasswing VenturesGaingels
HealthtechAustin, US
Adam Berman(Executive Officer, Director)William E. Cohn(Director)
BoardJames Eadie(Director)Brian R. Smith(Director)inGary Sabins(Director)
Unpopular.vc is a venture capital firm that invests in early-stage startups pursuing unconventional, contrarian ideas.
Sector Agnostic
Peter Livingston(Founder)in
Co-investorsPeakAfore CapitalAmino CapitalCIVGeneral AdvanceGoAhead Ventures+4 more
UpEquity provides real estate services that help homeowners buying and selling simultaneously by unlocking equity and removing contingencies to enable competitive offers.
FintechPropTechAustin, US
Timothy Herman(Founder)in
Co-investorsEarly Light VenturesLaunchpad CapitalNext Coast VenturesOrigin VenturesRiptide VenturesThe MBA Fund+2 more
VahatiCor develops the A-FLUX Reducer System, a self-expanding nitinol mesh implant placed in the coronary sinus to improve microvascular perfusion in patients with symptomatic coronary microvascular dysfunction (CMD).
HardwareHealthtechMedical DevicesSanta Clara, US
Harry Rowland(Chief Executive Officer)Kevin Van Bladel(Chief Technology Officer)Mark Niggli(Chief Commercial Officer)Marwan Berrada-Sounni(Executive Officer, Director)
BoardBrian R. Smith(Director)inDaniel Sheehan(Director)
Co-investorsIntuitive Ventures
Vendelux runs an AI-based event intelligence platform that helps B2B teams pick events, book meetings and attribute pipeline.
Long Island City, US
Alexander Reynolds(Executive Officer, Director)inRichard Stefan Deeran(Director)
Co-investorsEarl Grey CapitalFirstMark CapitalHubSpot VenturesSignalFireTri-Valley VenturesAlumni Ventures+3 more
HealthtechPlymouth, US
John Pigott(Executive Officer, Director)Jenny Zeroni(Executive Officer)Dave Michaelson(Executive Officer)Kathy Leith(Executive Officer)Jill Schweiger(Executive Officer)Shelby Hautman(Executive Officer)
Co-investorsEndeavour VisionRiverVest Venture Partners
Versa provides a receipt capture and reconciliation platform for corporate travel and expense management.
Enterprise SoftwareFintechSaaSNew York City, US
Ted Power(Founder)inThomas Moore(Founder)in
Co-investorsY CombinatorBlackRockCharacter
ZSuite Tech provides ZEscrow, a platform that lets banks and financial institutions manage commercial escrow accounts and subaccounts at scale, handling complex interest calculations, tracking, and compliance.
FintechPropTechSaaSBurlington, US
Nathan Baumeister(Executive Officer, Director)Vilangadu G. Narayanan(Director)William W. Neville(Director)Tom Shen(Director)Jay Tuli(Director)
Co-investorsBankTech VenturesFINTOP CapitalJAM FINTOP
Rows marked βSEC filingβ are inferred from directors named on the company's SEC Form D β public regulatory data, not a portfolio list published by the firm.