ACT Venture Capital
Venture capitalDublin · Seed–Growth · 12 people tracked
Investment thesis
ACT Venture Capital is an independent Irish venture capital firm that invests €1 million to €15 million in growth-stage private companies, with capacity for larger commitments through syndicated rounds.
Source: firm website, verified Aug 7, 2026.
Team · 12 people
from the firm's website & curatedWhat they invest in
from 28 of 54 portfolio companiesAI & Machine Learning ×13Enterprise Software ×8SaaS ×8Deep Tech ×6Hardware ×6Data & Infrastructure ×4Healthtech ×4Cybersecurity ×3
HQs:Ireland×12
Investments · 54 tracked
founders shown can be your intro pathCo-investorsAct Venture Capital
Alpha Wireless designs and manufactures antenna solutions and turnkey streetworks hardware for telecom operators, neutral host providers, and utilities deploying 5G, fixed wireless access (FWA), and private networks.
Enterprise SoftwareHardwareIoTPortlaoise, IE
Co-investorsAct Venture Capital
AQMetrics provides investment compliance software that automates ongoing monitoring of ownership structures, investment limits, and portfolio risk for financial institutions.
Data & InfrastructureEnterprise SoftwareFintechLegalTechSaaSDublin, IE
Geraldine Dautun(Founder)in
Co-investorsAct Venture CapitalFrontline Ventures
Cesanta develops embedded networking and connectivity software, including an embedded web server and IoT framework, for developers connecting applications and devices online.
Developer ToolsHardwareIoT
Anatoly (Toly) LebedevSergey Lyubka
Co-investors500 GlobalAct Venture Capital
ChannelSight offers a commerce intelligence platform that connects brands' product pages and marketing campaigns to the retailers carrying their products, with Where To Buy, Add to Cart, digital shelf monitoring and shoppable media tools.
E-commerceMarketing TechRetail Tech
Co-investorsAct Venture CapitalLiquidity CapitalNauta Capital
CitySwift provides a data analytics platform for bus network operators and transit authorities, cleaning and enriching raw bus data to deliver insights, recommendations, and demand forecasting.
AI & Machine LearningData & InfrastructureMobility & Transportation
Co-investorsAct Venture CapitalGresham House VenturesWestern Development Commission
Co-investorsAct Venture CapitalRally Ventures Management, Llc
Co-investorsAct Venture Capital
Co-investorsAct Venture Capital
Decawave developed Ultra-Wideband (UWB) technology, including UWB integrated circuits, modules, and evaluation kits, some compatible with Apple's U1 chip.
HardwareIoTSemiconductors
Co-investorsAct Venture CapitalKernel CapitalWestSummit Capital
Deciphex develops AI-based digital pathology platforms for clinical diagnostics and drug development, including Diagnexia for NHS clinical pathology and Patholytix for GLP-compliant preclinical pharma studies.
AI & Machine LearningDigital HealthHealthtech
Co-investorsAct Venture CapitalClaret Capital PartnersMolten VenturesSeroba Life Sciences
Eblana Photonics designs and manufactures laser diodes, including single frequency DFB laser diodes, Quantum Cascade DFB lasers, VCSELs, and superluminescent diodes, for use in optical sensing, LIDAR, and telecoms applications.
Deep TechHardwareSemiconductorsDublin, IE
Co-investorsAct Venture Capital
EdgeTier provides AI-powered software that analyzes customer interactions in real time to identify issues and their root causes for contact centers and customer experience teams.
AI & Machine LearningEnterprise SoftwareSaaSDublin, IE
Shane(Chief Executive Officer / Co-Founder)inCiarán(Chief Technical Officer / Co-Founder)in
Co-investorsAct Venture CapitalEpisode1
Ekco is a security-first managed service provider offering managed IT and cloud services, cyber security, business continuity, and IT support to businesses and IT departments.
Cloud ComputingCybersecurityEnterprise Software
Co-investorsAct Venture Capital
Co-investors4impact capitalAct Venture CapitalAmadeus Capital SAAngel Physicians FundAnkur CapitalArc Angels+59 more
Co-investorsAct Venture CapitalBuilding Ventures
GreyScout offers brand protection software that detects, verifies, and enforces against unauthorized and grey-market sellers across global online marketplaces such as Amazon, eBay, and Walmart.
Co-investorsAct Venture CapitalFurthr VC
GridBeyond operates a technology platform that manages distributed and flexible energy resources, using AI to dispatch flexibility from assets such as utility-scale renewables, battery storage and industrial load into energy markets.
AI & Machine LearningCleantechEnergy
Co-investorsAct Venture CapitalClaret Capital PartnersConstellation Technology VenturesEnergy Impact PartnersFurthr VCMirova+1 more
Co-investorsAct Venture Capital
Co-investorsAct Venture Capital
Keelvar is an AI-native advanced sourcing optimization platform that helps enterprises automate and optimize procurement processes by matching buyers and suppliers fairly using intelligent algorithms.
AI & Machine LearningB2B MarketplacesEnterprise SoftwareSaaSCork, IE
Alan Holland(Founder & CEO)in
Co-investors83NorthAct Venture CapitalEnterprise EquityMosaic VenturesSquareOne
Lative is an AI-native platform for go-to-market (GTM) planning and decision intelligence that unifies sales strategy with execution by connecting marketing intelligence to sales operations.
AI & Machine LearningSaaS
Co-investorsAct Venture CapitalSenovo
Lime Microsystems develops field-programmable RF (software-defined radio) hardware and network solutions for wireless systems, supporting 4G and 5G deployments.
Deep TechHardwareSemiconductors
Co-investorsAct Venture Capital
Mad-Me provides on-device AI that gathers real-time mobile signals (app opens, unlock events, location, connectivity, roaming) to help telecom service providers trigger contextual, well-timed messages to subscribers.
AdTechAI & Machine LearningMarketing Tech
Co-investorsAct Venture CapitalDelta Partners
Co-investorsAct Venture Capital
Micron Agritech makes the Micron Kit, an AI-powered platform for fast, lab-quality fecal egg count (FEC) testing to detect gastrointestinal worms and liver and rumen fluke in cattle, sheep, and horses.
AgTechAI & Machine LearningHealthtech
Co-investorsAct Venture CapitalThe Yield Lab EuropeThe Yield Lab
Oblivious builds privacy-enhancing software that enables organizations to perform secure data collaboration and deploy services while maintaining data sensitivity.
CybersecurityData & InfrastructureEnterprise SoftwareDublin, IE
Jack Fitzsimons(Co-founder)Robert Pisarczyk(Co-founder)
Co-investorsAct Venture CapitalAcurio VenturesExpeditionsFirestreak VenturesNAP
Co-investorsAct Venture Capital
Co-investorsAct Venture Capital
Plasma Bound, a spin-out of University College Dublin, develops Controlled Polymer Ablation (CPA) surface-engineering technology for bonding lightweight structural assemblies.
Advanced ManufacturingDeep TechNew MaterialsDublin, IE
Alan Barry(CEO & Co-Founder)Xavier Montibert(Commercial Director & Co-Founder)Dr. Nick Barry(CTO & Co-Founder)
Co-investorsAct Venture CapitalBusiness Venture Partners
Provizio develops software-defined imaging radar and AI perception software that converts raw radar data into insight for safety, efficiency, and automation.
AI & Machine LearningDeep TechMobility & Transportation
Co-investorsAct Venture CapitalTechFounders
S3 Connected Health provides services to develop, launch, and operate digital health solutions, helping clients meet regulatory requirements for medical products and devices.
Digital HealthHealthtechMedical Devices
Co-investorsAct Venture Capital
Co-investorsAct Venture Capital
ServisBot provides agentic AI agents, assistants, and copilots with human-in-the-loop oversight, auditability, and compliance guardrails for enterprises in regulated industries.
AI & Machine LearningEnterprise SoftwareSaaS
Co-investorsAct Venture Capital
SiriusXT builds the SXT-100, a laboratory-scale soft X-ray microscope that produces label-free 3D subcellular tomograms of whole cells and tissue for disease and drug research.
BiotechDeep TechHardwareDublin, IE
Co-investorsAct Venture CapitalDelta Partners
Co-investorsAct Venture Capital
Trustap provides an all-in-one payments platform for online marketplaces, ecommerce stores, motors platforms, and peer-to-peer transactions, combining payment processing, fraud prevention, chargeback management, and dispute resolution in a single integration.
E-commerceFintechMarketplaces
Co-investorsAct Venture CapitalFurthr VCPartners ResoluteTX Ventures
Builds the autonomous intelligence layer for satellites, with its CogniSat platform fusing multimodal sensor data (optical, radar, hyperspectral, transponder signals) and running AI inference on-board in orbit, orchestrated across a virtual constellation of third-party satellites.
Co-investorsAct Venture Capital
UrbanFox is an AI-powered fraud detection platform that uses generative AI and behavioral intelligence to detect online payment fraud, bot traffic, and account takeover attempts without relying on static rules.
AI & Machine LearningCybersecurityFintechDublin, IE
Co-investorsAct Venture CapitalFurthr VCJetBlue VenturesSKY VCTechstarsIAG Capital Partners
Verodat provides a governed data supply chain platform that validates, tracks provenance, and structures business data so it can be reliably used by AI, analytics, and automation tools.
AI & Machine LearningData & InfrastructureEnterprise SoftwareDublin, IE
Thomas Russell(Founder)
Co-investorsAct Venture Capital
VideoElephant operates a large premium video library of over 5 million rights-cleared videos, playlists, and channels, offering content licensing, distribution, syndication, monetization, and advertising solutions.
AdTechMedia & EntertainmentSaaS
Co-investorsAct Venture CapitalFurthr VC
VISUA develops a Visual-AI computer vision technology suite offered via API, covering capabilities such as image scanning for brand and trademark infringement and sports sponsorship monitoring.
AI & Machine LearningDeep TechSaaSDublin, IE
Co-investorsAct Venture Capital
Vitro is a clinician-designed digital medical record system that digitises hospitals' existing paper forms, pathways and workflows, capturing clinical data at the bedside and integrating scanned historical records with lab, radiology and patient administration results.
Digital HealthHealthtechSaaS
Co-investorsAct Venture Capital
Co-investorsAct Venture Capital
Portfolio news
latest coverage across their companiesGridbeyond · techfundingnews.com · Aug 19, 2026
Deciphex · founderstoday.news · Oct 3, 2025
UrbanFox · iagcapitalpartners.com · Mar 2, 2025
Frequently asked questions
- How many investments has ACT Venture Capital made?
- ACT Venture Capital has 54 tracked investments.
- What stage does ACT Venture Capital invest at?
- ACT Venture Capital invests at the Seed, Series A, Series B, Series C, Growth stages.
- What is ACT Venture Capital's typical check size?
- ACT Venture Capital typically writes checks of $1.1M – $16.2M.
- What sectors does ACT Venture Capital focus on?
- ACT Venture Capital focuses on AI & Machine Learning, Biotech, Climate Tech, Cloud Computing, Consumer, Cybersecurity, Data & Infrastructure, Deep Tech, Defense Tech, E-commerce, Energy, Enterprise Software, Fintech, Hardware, Healthtech, IoT, Media & Entertainment, Medical Devices, SaaS, Semiconductors, Space Tech.
- Where is ACT Venture Capital located?
- ACT Venture Capital is headquartered in Dublin, IE.
- Who does ACT Venture Capital co-invest with?
- ACT Venture Capital most often shares deals with Act Venture Capital, Furthr VC, Claret Capital Partners, among 36 tracked co-investors.
Media · Podcasts & interviews
featuring the teamJohn O'Sullivan, ACT Venture Capital - Capital Ideas, season 2, episode 3
KPMG Ireland · John O'Sullivan
KPMG Capital Ideas Podcast - John O'Sullivan ACT Venture Capital
KPMG Ireland · John O'Sullivan
Images
Co-investors · 10
Rally Ventures is an investment firm focused on business technology companies, backing a select group of high-potential startups to help them grow market impact and value.
Molten Ventures is a European venture capital firm that backs technology founders from Series A onward, providing capital along with expertise and networks to help companies scale globally.
Seroba is a Dublin-based life sciences venture capital firm investing in early-stage biotech and medtech companies developing new therapeutics and medical devices.
Accel is a venture capital firm that partners with exceptional teams, positioning itself as a first partner to founders globally.
Greylock Partners is an early-stage venture capital firm that partners with founders building companies from inception. Its partners make only one or two new investments per year to focus deeply on each partnership.
Wildcat Venture Partners is a venture capital firm that backs technology entrepreneurs aiming to create new market categories.
WestWave Capital is an early-stage venture capital firm founded by former entrepreneurs and experienced investors, focused on backing founders building and scaling technology companies.
Atlantic Bridge is a growth equity firm investing in deep technology companies across Europe, the UK and the US, using a cross-border value-add strategy and a global platform to help portfolio companies scale internationally.
Verve Ventures operates a digital platform where qualified individuals and institutions can either commit to funds or cherry-pick single deals, blending a venture fund with a curated angel investing platform rather than using a traditional closed GP-LP structure. The fund focuses on deep tech investments in climate/energy, industrial tech, health & bio, and future computing, systematically tracking research teams in academia before they spin out into companies and conducting rigorous multi-month to multi-year diligence processes.
Sure Valley Ventures is a venture capital firm investing in early-stage artificial intelligence software companies operating in the UK and Ireland.
Firms observed investing alongside ACT Venture Capital, from public investor directories. Shared companies are the overlap with ACT Venture Capital's recorded portfolio.
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