ACT Venture Capital
actventure.capital Direct investor
ACT Venture Capital is an Irish venture capital firm that invests in early-stage technology companies. It has backed over 140 companies and manages funds supported by the European Investment Fund.
ACT Venture Capital is a venture capital firm headquartered in Dublin, Ireland. It invests directly in companies, from seed to Series A, in AI/ML & Data, business Applications, cloud & Infrastructure and connectivity & IOT. €600m under management and 140 portfolio companies, as it reports.
“We back exceptional teams who truly understand their market”
— ACT Venture Capital, own website
- Layer
- Direct investor
- Type
- Venture capital
- Sectors
- AI/ML & Data, Business Applications, Cloud & Infrastructure, Connectivity & IOT, Deep Tech, E-Commerce, Energy & Climate, Fintech
- Assets under management
- €600m
- Portfolio
- 140 companies
Team, as ACT Venture Capital publishes it
- Debbie Rennick General Partner
- John Flynn Managing Partner
- John O’Sullivan General Partner
- Conor Mills Principal
- Andrew O’Neill Principal
- Mairead Roche Associate
- Lorraine Paton Financial Controller
- Cathy McBride Fund Accountant
- Sarah Matthews Accounts
- Shanice Callinan Office Manager
Names and roles exactly as listed on actventure.capital. Nothing else about these people is recorded.
Co-invests most often with
Derived from portfolio pages both investors publish themselves: each pair below lists at least one company in common. 44 co-investors found.
- Delta Partners 3 shared companies: hubli.com, mad-me.com, siriusxt.com
- Episode 1 Ventures 2 shared companies: edgetier.com, scurri.com
- Frontline Ventures 2 shared companies: umba.com, aqmetrics.com
- Molten Ventures 1 shared company: deciphex.com
- Seroba Life Sciences 1 shared company: deciphex.com
- Fountain Healthcare Partners 1 shared company: irishtimes.com
- NDRC 1 shared company: irishtimes.com
- Northzone 1 shared company: irishtimes.com
- Acurio Ventures 1 shared company: oblivious.com
- NAP 1 shared company: oblivious.com
and 34 more — the graph.
Where this comes from
Every fact above was read from a page ACT Venture Capital publishes itself. Nothing is taken from third-party databases. Investment activity (deals, co-investors) is not yet recorded.
- https://actventure.capital/name, is_investor, layer, type, hq_country, hq_city, stage_min, stage_max, thesis_quote, thesis_quote_page, description, aum, portfolio_count, status
- https://actventure.capital/portfoliosectors
- https://actventure.capital/who-we-arepeople
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Record 272 · added 2026-08-28 · link last verified 2026-09-06 · confidence high
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