San Francisco · Seed–Growth · 9 people tracked
Also known as WALDEN CATALYST MANAGEMENT, LLC · Walden Catalyst Ventures · Walden Catalyst Ventures AI
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 Aug 25, 2026.
Team · 9 people
from the firm's website & public directories.avif)
What they invest in
from 28 of 48 portfolio companiesAI & Machine Learning ×16Deep Tech ×10Enterprise Software ×10Hardware ×9Semiconductors ×7Biotech ×4Cybersecurity ×4Data & Infrastructure ×4
HQs:United States×15Switzerland×1France×1United Kingdom×1Israel×1
Investments · 48 tracked
founders shown can be your intro pathBy year:2026 · 22025 · 52023 · 12022 · 19 dated
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+4 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
San Jose, US
Krishnamurthy Rangasayee(Executive Officer, Director)Steven Rosston(Executive Officer, Director)
BoardJacob Flomenberg(Director)Michael Dauber(Director)Daniel Docter(Director)inMoshe Gavrielov(Director)
Board seatLip-Bu Tan· per SEC Form D · $67.8M raise · filed Nov 2022
Co-investorsBay Bridge Ventures ClimateDell Technologies Capital
3DGS designs and manufactures advanced glass-substrate semiconductor packaging, including glass interposers and 3D heterogeneous integration, for applications in RF/wireless (5G/6G), aerospace and defense, photonics, HPC/AI accelerators, and sensors.
Deep TechHardwareSemiconductors
Co-investorsCambium CapitalSun Mountain CapitalLockheed Martin Ventures
AI21 develops trustworthy artificial intelligence technology to enhance human productivity.
AI & Machine LearningDeveloper ToolsEnterprise Software
Ori Goshen(Co-CEO & Co-Founder)inProf. Yoav Shoham(Co-CEO & Co-Founder)Yoav Shoham(Founder)in
Co-investors8VCAhren Innovation CapitalCoatue ManagementComcast VenturesFelicis VenturesIntel Capital+4 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)Tommy Joyner(Sr. VP of Engineering)Marc Bouchet(Chief of Staff)inAndrey Reznik(Chief Financial Officer)
Co-investorsFoothill VenturesMaterial ImpactXoraTDK VenturesXora Innovation Pte Ltd
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)
Co-investorsBreyer CapitalCoatue ManagementKoch Disruptive TechnologiesHealth Velocity CapitalJackson Square VenturesLead Edge Capital+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(Executive Officer, Director)
BoardChinnugounder Senthilkumar(Director)Arpit Agarwal(Director)inRohit Sharma(Director)inNihar Ranjan(Director)
Co-investorsAthera Venture PartnersExfinity VenturesNGP CapitalBlume VenturesTrue Ventures
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
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 VCUnitus 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 Delivery provides a timing and coordination software engine designed to optimize omnichannel operations for restaurant brands, enabling efficient order management and fulfillment across digital and in-person channels.
Enterprise SoftwareLogistics & Supply ChainSaaS
Dan McFaddenChris PfeifferDavid BaldwinKristopher ChambersLisa SangiorgioNakul Deo
Co-investorsHigh AlphaAllos VenturesAtreides ManagementCapitalGFidelity InvestmentsIndex Ventures+6 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)Trey Roessig(Chief Technology Officer & SVP Engineering)Kurt Redfield(Chief Financial Officer & Treasurer)
Co-investorsCapitalGRaptor GroupSamsung Catalyst FundSocratic PartnersAtreides ManagementFidelity Investments+6 more
San Jose, CA based fabless semiconductor company designing next-generation power solutions.
Co-investorsArcherman CapitalMESH
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)Andrew Warner(Vice President, Product)Monica Zarb(Vice President, Business Development)Durand Van Arnem(Vice President, Engineering)Alan Rope(Medical Director)
Co-investorsCanaan PartnersDreamers VCEcho Health VenturesGV (Google Ventures)Illumina VenturesKaiser Permanente Ventures+3 more
Graphcore develops processor technology and hardware for artificial intelligence and machine learning workloads, aimed at AI innovators and researchers.
AI & Machine LearningHardwareSemiconductors
Nigel Toon(Founder)in
Co-investorsAhren Innovation CapitalAir Street CapitalBalderton CapitalBMW i VenturesBosch VenturesC4 Ventures+9 more
Co-investorsSamsung Catalyst Fund
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)Puneet Agarwal(Co-Founder & Chief Technology Officer)Sumeet Gagneja(Chief Financial Officer)Bruce Fishbein(Chief Development Officer)Phil Mazzara(General Counsel)Stuart Krometis(Vice President, Worldwide Sales and Business Development)
Co-investorsBlackRockCelesta CapitalCelesta CapitalDag VenturesGreylock PartnersPremji Invest+3 more
LuoPay provides a centralized platform for making international payments, requesting quotations, and tracking account balances in real time.
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)
Co-investors.406 VenturesCoalition OperatorsMVP VenturesGeneral Catalyst
Advanced semiconductor metrology and inspection solutions enabling AI infrastructure innovation
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
AI agents that learn on the job to become domain experts for reliable and scalable intelligence
Santa Clara, US
Co-investorsCelesta CapitalMayfield FundMithril Capital ManagementTechnology ImpactWCV
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
Co-investorsSamsung Catalyst Fund
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 VenturesLDV PartnersMediaTekNVentures+1 more
Co-investorsCambium CapitalKoch Disruptive Technologies
Galileo is an AI observability and evaluation platform that lets teams build datasets, create custom evals, and convert them into production guardrails and monitoring for AI agents and LLM applications.
AI & Machine LearningDeveloper ToolsEnterprise Software
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)
BoardLip-Bu Tan(Director)in
Co-investorsAtlantic Bridge VenturesBattery VenturesBerkeley FrontierCambium CapitalCelesta CapitalCelesta Capital+12 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)Jonathan Friedmann(Chief Strategy Officer and Co-Founder)Yoav Etsion(Chief Technologist and Co-Founder)Dani Voitsechov(VP R&D and Co-Founder)inItai Incze(Chief Software Architect and Co-Founder)Rafi Shalom(CTO, Chief Architect and Co-Founder)in
Co-investors83NorthHanaco Venture CapitalKoch Disruptive TechnologiesViola Ventures
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)
Co-investorsOUP (Osage University Partners)
Mountain View, US
Joshua Patterson(Founder)Keith Kraus(Founder)
Co-investorsCoatue Management
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 · 1
IPOs and acquisitions across the tracked portfolioGraphcoreacq. by SoftBank Corp. Website
Portfolio news
latest coverage across their companiesGraphcore · graphcore.ai · Jul 31, 2026
Empower · musiculture.in · Jul 18, 2026
AI21 Labs · calcalistech.com · Jul 7, 2026
Empower · robberger.com · Jun 13, 2026
Amperesand · dealstreetasia.com · Jun 2, 2026
RadixArk · analyticsinsight.net · May 8, 2026
Nace · citybiz.co · May 6, 2026
Speedata · datacenterdynamics.com · Mar 31, 2026
Frequently asked questions
- How many investments has Walden Catalyst made?
- Walden Catalyst has 24 tracked investments, 2 of which have exited via acquisition or IPO.
- 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 58 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
Bessemer Venture Partners is a global venture capital firm that partners with entrepreneurs across enterprise, consumer, and healthcare sectors from early stages through growth.
Intel Capital is the corporate venture capital arm associated with Intel, investing in and supporting technology companies as they scale.
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.
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.
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General Catalyst is a venture capital firm operating as a partnership focused on company building and accelerating the growth of the businesses it backs.
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.
Storm Ventures is a venture capital firm founded in 2000 that invests in internet infrastructure and optical networking companies, with a focus on bandwidth creation, wireless infrastructure, and managed services.
Race Capital is an early-stage venture fund that invests in companies operating in data, enterprise, infrastructure, and fintech sectors.
▶32 more co-investors
Kaiser Permanente VenturesFusion VCFounders FundNew Enterprise Associates (NEA)Unknown VenturesSound VenturesHeadlineTrajectory VenturesKortschak Investments L.P.GaingelsSalesforce Japan Co.,Ltd.Shasta VenturesCyberstartsAIX VenturesOurCrowdTarget GlobalOMERS VenturesEarlybird Venture CapitalRecursive 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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