San Francisco · Seed–Growth · 10 people tracked
Also known as WALDEN CATALYST MANAGEMENT, LLC · Walden Catalyst Ventures · Walden Catalyst Ventures AI
Find your way into Walden Catalyst
4,636 people in our graph share verified history with the Walden Catalyst team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Walden Catalyst positions itself as a patient-capital investor partnering with bold, pioneering founders at the edge of scientific discovery and engineering innovation. Drawing on more than three decades of experience, the firm emphasizes lasting relationships, strategic direction, and positive human impact. Its investment activity centers on deep technology domains such as advanced semiconductors, AI, and related infrastructure, reflected in portfolio companies working on semiconductor metrology, intelligent power delivery, and AI agents.
Source: firm website, verified Sep 15, 2026.
Team · 10 people
from the firm's website & curated & public directories
Founder mafia
2 people who came through Walden Catalyst went on to found or lead other companies.
What they invest in
from 31 of 58 portfolio companiesAI & Machine Learning ×18Deep Tech ×12Enterprise Software ×10Hardware ×10Semiconductors ×8Cybersecurity ×5Data & Infrastructure ×5Biotech ×4
HQs:United States×21Switzerland×1Spain×1France×1United Kingdom×1Israel×1
Investments · 58 tracked
founders shown can be your intro pathBy year:2026 · 32025 · 62024 · 12023 · 42022 · 52020 · 12019 · 12018 · 12016 · 12009 · 12008 · 12003 · 127 dated
IonQ develops and operates quantum computers based on trapped-ion technology, selling access to its systems through major cloud platforms (AWS, Microsoft Azure, Google Cloud) as well as directly to customers, and manufactures specialized quantum computing hardware alongside complementary quantum networking, sensing, and security products.
Niccolo M. de Masi(Chairman, President and Chief Executive Officer)Inder M. Singh(Chief Financial Officer and Chief Operating Officer)Paul T. Dacier(Chief Administrative Officer, Chief Legal Officer and Corporate Secretary)Dean P. Acosta(Chief Corporate Affairs and Government Relations Officer)Scott F. Millard(Chief Business Officer)
Co-investorsCorrelation VenturesFPVManta Ray VenturesOUP (Osage University Partners)Runa CapitalSamsung Catalyst Fund+4 more
3DGS manufactures glass-based substrate and packaging solutions for miniaturized RF, analog, and digital components in semiconductor and electronics applications.
Advanced ManufacturingDeep TechHardwareSemiconductorsAlbuquerque, US
Jeb Flemming(Founder & CTO)in
Co-investorsIntel CapitalCambium CapitalSun Mountain CapitalLockheed Martin Ventures
ANYbotics develops autonomous robots that perform inspection and maintenance tasks in industrial facilities, particularly in energy, oil & gas, and manufacturing sectors.
Advanced ManufacturingDeep TechEnergyHardwareIoTRoboticsZurich, CH
Dr. Péter Fankhauser(Co-Founder & CEO)in
Co-investorsBessemer Venture PartnersAramco VenturesBootstrap EuropeClimate InvestmentNGP CapitalQualcomm Ventures+5 more
Peptone develops a product engine to design small-molecule drug candidates targeting intrinsically disordered proteins, which have been difficult to address with conventional drug discovery approaches.
AI & Machine LearningBiotechDeep Tech
Co-investorsBessemer Venture PartnersHoxton VenturesF-Prime CapitalFounders FactoryFounders Factory NYNovartis Venture Fund
AI21 develops trustworthy artificial intelligence technology to enhance human productivity.
AI & Machine LearningDeveloper ToolsEnterprise Software
Ori Goshen(Co-CEO & Co-Founder)inYoav Shoham(Founder)in
Co-investors8VCAhren Innovation CapitalCoatue ManagementComcast VenturesFelicis VenturesIntel Capital+6 more
Amperesand manufactures medium voltage solid-state transformers for critical power infrastructure, enabling faster deployment of power systems for AI data centers and industrial applications.
Deep TechEnergyHardware
Brian Dow(Chief Executive Officer)inTommy Joyner(Sr. VP of Engineering)inMarc Bouchet(Chief of Staff)inAndrey Reznik(Chief Financial Officer)
Co-investorsFoothill VenturesMaterial ImpactXoraTDK VenturesXora Innovation Pte Ltd
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Building the AI hardware industry from scratch
Jovan Stojanovic(Founder)in
Co-investorsEntrada VenturesAcequia Capital (AceCap)Earlybird Venture Capital
Artera develops AI-powered diagnostic tests that analyze patient biopsy images to predict therapeutic response in cancer care.
AI & Machine LearningHealthtechMedical DevicesLos Altos, US
Andre Esteva, PhD(Founder)inAndre Esteva(Founder)in
Co-investorsBreyer CapitalCoatue ManagementKoch Disruptive TechnologiesLead Edge CapitalHealth Velocity CapitalJackson Square Ventures+2 more
Ati Robotics builds factory-hardened autonomous mobile robots (AMRs) and an AI-driven orchestration platform (Ati Flow/Ativerse) that coordinates material movement on manufacturing floors and integrates with ERP and MES systems.
Advanced ManufacturingIoTRoboticsRochester Hills, US
Saurabh Chandra(Founder & CEO)in
BoardChinnugounder Senthilkumar(Director)Arpit Agarwal(Director)inRohit Sharma(Director)inNihar Ranjan(Director)
Co-investorsAthera Venture PartnersExfinity VenturesMFV PartnersNGP CapitalBlume VenturesTrue Ventures
Avegant develops LED light engine technology, including the AG-30L2, for lightweight augmented reality glasses.
Deep TechHardwareMedia & EntertainmentSemiconductorsSan Mateo, US
Edward Tang(Chief Executive Officer and Co-Founder)inAllan Evans(Executive Officer)inAnnie Rogaski(Executive Officer)inJoerg Tewes(Executive Officer, Director)inNeil Welch(Executive Officer)inYobie Benjamin(Executive Officer)
Co-investors500 GlobalID VenturesLG Technology VenturesApplied VenturesChina Walden Venture InvestmentsIntel Capital+1 more
Berkeley Lights (now Bruker Cellular Analysis) develops the Beacon optofluidic system for single-cell functional analysis, enabling researchers to profile live single cells to discover therapeutic antibodies, interrogate T cells, identify cell therapies, and accelerate cell line development.
BiotechDeep TechHardwareEmeryville, US
Ming Wu(Director)inIgor Khandros(Executive Officer, Director)
BoardMichael Marks(Director)inLip-Bu Tan Tan(Director)Michael Moritz(Director)inWilliam Davidow(Director)
Co-investorsCelesta CapitalCelesta CapitalCota CapitalKhosla VenturesOpen Field CapitalShangBay Capital LLC+1 more
Clarity provides identity security and fraud protection for organizations throughout the candidate and employee lifecycle, using AI detection technology to prevent unauthorized access and insider threats caused by AI-driven identity manipulation.
AI & Machine LearningCybersecurityHR Tech
Ofer Ben-Noon(Co-Founder & CEO)Udi Mokady(Co-founder & CTO)Slavik Markovich(Head of GTM)Eyal Sasson(Head of Fraud & IP)
BoardVanessa Pegueros(VP Product)inDemi Ben-Arie(Cyber Advisory)
Co-investorsAscend Venture CapitalBessemer Venture PartnersFlying Fish VenturesFusion VCRecursive VenturesUnitus Ventures
Darktrace / Forensic Acquisition & Investigation is a cloud-native forensics product that automates disk-level evidence capture, collection, and preservation across multi-cloud, on-premises, and SaaS environments.
AI & Machine LearningCloud ComputingCybersecurityEnterprise SoftwareSaaSCambridge, GB
Jill Popelkain
Co-investors408 VenturesAlexander Square PartnersAmakorBalderton CapitalBright Pixel CapitalBrighton Park Capital+10 more
Empower Semiconductor designs power management and mixed-signal integrated circuits, including high-power and voltage regulation devices for the semiconductor industry.
AI & Machine LearningDeep TechHardwareSemiconductors
Tim Phillips(Chief Executive Officer & President, Founder)inGene Sheridan(Founder)inTrey Roessig(Chief Technology Officer & SVP Engineering)Kurt Redfield(Chief Financial Officer & Treasurer)
Co-investorsCapitalGRaptor GroupSamsung Catalyst FundSocratic PartnersAtreides ManagementFidelity Investments+6 more
Empowercultural provides cultural accessibility solutions for museums, art centers, and cultural institutions, with a focus on ensuring people with autism and other needs can participate in cultural experiences without barriers.
EdTechImpact & Social GoodMadrid, ES
Co-investorsShip2BAtreides ManagementBlisceCapitalGCommunity Investment ManagementFidelity Investments+6 more
Bertrand Serlet(Founder)in
Co-investorsBattery VenturesSamsung Catalyst FundSoftBank Vision Fund
Genome Medical provides telehealth-enabled genetic services, including genetic counseling, genetic testing, and clinical trial matching, with a focus on individuals with rare conditions.
BiotechDigital HealthHealthtech
Mark Sylvester(Chief Financial Officer)inAndrew Warner(Vice President, Product)inMonica Zarb(Vice President, Business Development)inDurand Van Arnem(Vice President, Engineering)inAlan Rope(Medical Director)in
Co-investorsCanaan PartnersDreamers VCEcho Health VenturesGV (Google Ventures)Illumina VenturesKaiser Permanente Ventures+5 more
Graphcore builds processor hardware and systems for machine intelligence and AI workloads.
AI & Machine LearningHardwareSemiconductors
Nigel Toon(Co-founder and Executive Chairman)inNick Bishop(Chief Financial Officer)inSally Doherty(Chief Marketing Officer)inJohn Walsh(Chief Operating Officer)inMarcus McElroy(General Manager)inHelen Byrne(VP AI Technology)in
Co-investorsAhren Innovation CapitalAir Street CapitalBalderton CapitalBMW i VenturesBosch VenturesC4 Ventures+9 more
Ingonyama develops cryptography acceleration technology, including ICICLE, a library that speeds up algorithms and protocols such as zero-knowledge proofs across compute backends like CPUs, GPUs, Apple Silicon, and its ZPU hardware.
Crypto & Web3Deep TechDeveloper Tools
Co-investorsBlueYard CapitalIOSG VenturesMaven 11RockawayXSamsung NextZero Knowledge Validator (ZKV)+2 more
Innovium (now part of Marvell) designs custom silicon, network switch products, and interconnect platforms for AI data-center infrastructure, enterprise networking, and 5G carrier applications.
AI & Machine LearningData & InfrastructureHardwareSemiconductorsSan Jose, US
Rajiv Khemani(Co-Founder & Chief Executive Officer)inPuneet Agarwal(Co-Founder & Chief Technology Officer)inSumeet Gagneja(Chief Financial Officer)Bruce Fishbein(Chief Development Officer)inPhil Mazzara(General Counsel)Stuart Krometis(Vice President, Worldwide Sales and Business Development)in
Co-investorsBlackRockCelesta CapitalCelesta CapitalDag VenturesGreylock PartnersPremji Invest+3 more
San Francisco, US
Grant Ingersoll(Director)Will Hayes(Executive Officer, Director)inReade Frank(Executive Officer)inPaul Doscher(Executive Officer, Director)Frank Calderon(Executive Officer)
BoardRavi Mohan(Director)in
Co-investorsAllegisCyber CapitalFrancisco PartnersSixth StreetShasta VenturesTop Tier Capital Partners
Luo builds financial infrastructure that lets businesses in emerging markets send cross-border payments to the rest of the world with more speed, transparency, and reliability.
Enterprise SoftwareFintechParis, FR
Hamza Benkirane(CEO)inMorgan Wirtz(CPO)in
Co-investorsEntrepreneur FirstMaC Venture CapitalProtagonistSamos InvestmentsTranspose Platform ManagementAtreides Management+6 more
MindsDB builds open-source infrastructure for AI-augmented analytics and data work, enabling users to interact with their data through natural language.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Adam Carrigan(Founder)inJorge Torres(Founder)in
Co-investorsAngel InvestBerkeley SkyDeck FundMayfield FundMMC VenturesNVenturesOpenOcean+9 more
Nace provides AI-powered verification and automation for financial processes, including audit, accounting, compliance, and deal due diligence.
AI & Machine LearningEnterprise SoftwareFintechPalo Alto, US
Sudha Valluru(Founder)inLucas Tsao(Founder)Stephen V(Founder)Zhanibek Datbayev(Founder)in
Co-investors.406 VenturesCoalition OperatorsMVP VenturesGeneral Catalyst
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Nearfield Instruments (NFI) develops automated high-throughput atomic force microscopy systems for atom-scale 3D metrology used in process control.
Deep TechHardwareSemiconductors
Co-investorsInnovation Industries
OPAQUE provides a hardware-enforced trust layer for AI systems that enables organizations to run AI on sensitive data with independently verifiable proof of data protection.
AI & Machine LearningCybersecurityEnterprise SoftwareSan Francisco, US
Ion Stoica(Co-founder)inRaluca Ada Popa(Co-founder)inRishabh Poddar(Co-founder)inChester Leung(Co-founder)inWenting Zheng(Co-founder)inAaron Fulkerson(CEO)in
Co-investorsIntel CapitalStorm VenturesRace Capital
RadixArk is a deep-tech company building large-scale AI inference and training infrastructure, including open-source engines and managed tooling for serving and post-training models.
AI & Machine LearningData & InfrastructureDeep Tech
RadixArk builds open-source AI infrastructure for large-scale model training and inference, including the SGLang inference engine and Miles reinforcement learning framework.
AI & Machine LearningData & InfrastructureDeep Tech
Banghua Zhu(Founder)in
Co-investorsAccelHOF CapitalVocal VenturesCelesta CapitalLDV PartnersMediaTek+2 more
Galileo provides evaluation, monitoring, observability, and guardrail tools for AI developers to ensure language model applications are reliable and safe across their development lifecycle.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaS
Vikram Chatterji(Co-founder and CEO)inAtindriyo Sanyal(Co-founder and CPO)inYash Sheth(Co-founder and CTO)in
Co-investorsFPVDatabricks Ventures
SambaNova develops an integrated AI platform designed to help enterprises deploy and manage AI workloads efficiently.
AI & Machine LearningCloud ComputingEnterprise SoftwareHardwareSemiconductorsPalo Alto, US
Kunle Olukotun(Co-founder & Chief Technologist)inRodrigo Liang(Co-founder & CEO)in
BoardLip-Bu Tan(Director)in
Co-investorsAtlantic Bridge VenturesBattery VenturesBerkeley FrontierCambium CapitalCelesta CapitalCelesta Capital+16 more
Speedata develops an Analytics Processing Unit (APU), a purpose-built semiconductor chip designed to accelerate database analytics and AI workloads for enterprises.
AI & Machine LearningData & InfrastructureSemiconductors
Dan Charash(Chairman and Co-Founder)inJonathan Friedmann(Chief Strategy Officer and Co-Founder)inYoav Etsion(Chief Technologist and Co-Founder)inDani Voitsechov(VP R&D and Co-Founder)inItai Incze(Chief Software Architect and Co-Founder)inRafi Shalom(CTO, Chief Architect and Co-Founder)in
Co-investors83NorthHanaco Venture CapitalKoch Disruptive TechnologiesViola VenturesPitango
Synacor provides cloud-based software and services for video, internet, and communications providers, device manufacturers, governments, and enterprises.
Cloud ComputingCybersecurityEnterprise SoftwareMedia & EntertainmentSaaSBuffalo, US
William J. Stuart(Executive Officer)Himesh Bhise(Executive Officer, Director)inDrake Harvey(Chief Executive Officer (CEO))inIra Berger(Chief Finance Officer (CFO))inAnthony Chadd(Chief Revenue Officer (CRO), Zimbra)inBret Cunningham(Chief Product Officer (CPO))in
Co-investorsCarbide VenturesNorth Atlantic Capital
FintechSan Francisco, US
Co-investorsTechstarsLightspeed Venture PartnersOsage University Partners
Virtue AI offers an enterprise AI security platform that applies real-time guardrails, red-teaming, and compliance controls to AI models and agentic systems.
AI & Machine LearningCybersecurityEnterprise SoftwareSan Francisco, US
Sanmi Koyejo(Founder & Chief AI Officer)inBo Li(Founder & CEO)inDawn Song(Founder & Board Director)inCarlos Guestrin(Founder & Chief Scientist)in
Co-investorsOUP (Osage University Partners)
Mountain View, US
Joshua Patterson(Founder)Keith Kraus(Founder)
Co-investorsCoatue Management
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Sima Technologies3DgsEmpower SemiconductorGalileoGenome MedicalGigabit OpticsGreenstone BiosciencesHabanaInphiMellanox TechnologiesmydecoNearfieldNeocognitionNuviaPolaris Electro-OpticsPreventice SolutionsRivosRivosincUnique AIvoltronZOOM
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 · 12
1 IPOs · 11 acquisitions · showing 8IonQNYSE: IONQGalileoacq. by CiscoGraphcoreacq. by SoftBank Corp. WebsiteHabanaacq. by Intel CorporationInphiacq. by Marvell TechnologyMellanox Technologiesacq. by NVIDIAPreventice Solutionsacq. by Boston ScientificRivosacq. by Meta Platforms Inc.
Portfolio news
latest coverage across their companiesEmpower · robberger.com · Sep 3, 2026
Graphcore · graphcore.ai · Jul 31, 2026
Avegant · startupintros.com · Jul 13, 2026
AI21 Labs · calcalistech.com · Jul 7, 2026
Amperesand · dealstreetasia.com · Jun 2, 2026
RadixArk · analyticsinsight.net · May 8, 2026
Nace AI · citybiz.co · May 6, 2026
Speedata · datacenterdynamics.com · Mar 31, 2026
Frequently asked questions
- How many investments has Walden Catalyst made?
- Walden Catalyst has 58 tracked investments, 12 of which have exited, including 9 dated in the last 24 months.
- What stage does Walden Catalyst invest at?
- Walden Catalyst invests at the Seed, Series A, Series B, Series C, Growth stages.
- What is Walden Catalyst's typical check size?
- Walden Catalyst typically writes checks of $550K.
- What sectors does Walden Catalyst focus on?
- Walden Catalyst focuses on AI & Machine Learning, Cloud Computing, Data & Infrastructure, Deep Tech, Hardware, Robotics, Semiconductors.
- Where is Walden Catalyst located?
- Walden Catalyst is headquartered in San Francisco, US.
- Does Walden Catalyst lead rounds?
- Walden Catalyst typically participates in rounds rather than leading them.
- Who does Walden Catalyst co-invest with?
- Walden Catalyst most often shares deals with Samsung Catalyst Fund, Celesta Capital, Celesta Capital, among 64 tracked co-investors.
From the blog
visit blog ↗Walden Catalyst has written about advanced metrology as essential infrastructure for AI computing and semiconductor manufacturing, highlighting Nearfield Instruments' $380 million funding round as a major milestone in deep-tech innovation. AI summary
Media · Podcasts & interviews
featuring the teamYoung Sohn (Walden Catalyst), Konstantin Othmer (Angel Investor) x Anari AI
Anari AI · Young Sohn
Images
Co-investors · 44
Intel Capital is the corporate venture capital arm associated with Intel, investing in and supporting technology companies as they scale.
Bessemer Venture Partners is a global venture capital firm that partners with entrepreneurs across enterprise, consumer, and healthcare sectors from early stages through growth.
GV (Google Ventures) is a venture capital firm that has invested in artificial intelligence and machine learning since its early days, building a global portfolio of more than 100 AI companies across infrastructure, life sciences, and applications.
Canaan Partners is a venture capital firm with over 30 years of history, backing companies across technology and healthcare sectors through close, hands-on partnerships with founders.
SoftBank Vision Fund invests globally in AI-focused companies working to transform and create industries.
Qualcomm Ventures is the corporate venture investment arm associated with Qualcomm, backing technology companies from early to growth stage across multiple sectors.
Hoxton Ventures is an early-stage venture capital firm that backs pre-seed and seed companies, often investing before revenue or product and offering hands-on support to founders.
NGP Capital is a venture capital firm with two decades of experience backing founders building transformative technologies across global markets.
General Catalyst is a venture capital firm operating as a partnership focused on company building and accelerating the growth of the businesses it backs.
Shasta Ventures is an early-stage venture capital firm that partners with founders building software, AI, and deep technology companies, providing capital, insight, and operating experience.
Target Global is a technology investment firm focused on empowering growth by backing transformational technology and ambitious entrepreneurs.
Earlybird Venture Capital is a European venture capital investor that backs early-stage technology founders with capital, strategic support, and access to an international network.
▶32 more co-investors
Storm VenturesRecursive VenturesWalden InternationalRace CapitalKaiser Permanente VenturesFusion VCFounders FundNew Enterprise Associates (NEA)Unknown VenturesSound VenturesHeadlineTrajectory VenturesKortschak Investments L.P.GaingelsSalesforce Japan Co.,Ltd.CyberstartsAIX VenturesOurCrowdOMERS VenturesMarcy Venture PartnersVertex Ventures IsraelVisionaries ClubGFT VenturesEight Roads VenturesE12 Venture Capital, LlcState of Mind VenturesTakwin VenturesDeep33KaristaRadian CapitalGreat North VenturesAlpina Partners
Firms observed investing alongside Walden Catalyst, from public investor directories. Shared companies are the overlap with Walden Catalyst's recorded portfolio.
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