Atlantic Bridge
VC Fund
Dublin, Ireland
Atlantic Bridge is a Growth Equity Firm with a Cross Border Value Add strategy. We invest in deep technology companies in Europe and the US. Our team is made up of successful entrepreneurs and senior technology industry executives and we invest in strong ambitious entrepreneurs and management teams that have the passion and drive to scale up andexploit major growth opportunities. We help our portfolio companies expand and grow internationally through our global platform with our team and offices in London, Dublin, Munich, Paris and Palo Alto.Atlantic Bridge brings together a unique team of technology entrepreneurs, experienced managers, finance professionals, and investment experts. The team contains a wealth of international business experience across Europe, the UK and the US. They have worked together in various capacities for the last 30 years, bringing a true partnership approach to their firm and their investments. Its investors include the founders, leading institutional investors, and private investors with a track record of investment in successful technology companies.Atlantic Bridge has developed a unique and differentiated strategy that focuses on specific technology themes and the implementation of the “Atlantic Bridge Model” for scaling companies internationally. The “Bridge Model” accelerates the scale-up of technology companies in Europe and the US. This approach is highly differentiated and has delivered strong performance results to date.
- Total investments:
- 154
- Last investment:
- Lead investor:
- 41%
- Fund size:
- $97M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Atlantic Bridge invests in
Stages Atlantic Bridge invests in
Countries Atlantic Bridge invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 12 contacts → | |||
Round size
- Seed
- $1.1M–$7.5M
- Series A
- $5M–$26M
- Series B
- $10M–$62M
Investment Focus
Industry
- Software 31 (20%)
- Artificial Intelligence 23 (15%)
- Information Technology 15 (10%)
- Analytics 13 (8%)
- Semiconductor 13 (8%)
Stage
- Series A 37 (24%)
- Series B 26 (17%)
- Seed 18 (12%)
- Funding Round 15 (10%)
- Venture - Series Unknown 14 (9%)
Country
- United States 44 (29%)
- Ireland 26 (17%)
- United Kingdom 8 (5%)
- Israel 2 (1%)
- India 1 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Brian Long
Managing Partner
|
Managing Partner | Total investments: 22 | Find email | |
Gerry Maguire
Co-Founder and General Partner
|
Co-Founder and General Partner | Total investments: 12 | Find email | |
Helen McBreen
Partner
|
Partner | Total investments: 5 | Find email | |
Kevin Dillon
Managing Partner & Co-Founder
|
Managing Partner & Co-Founder | Total investments: 20 | Find email | |
Chris Horn
Venture Partner
|
Venture Partner | Total investments: 10 | Find email | |
| See all 12 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Mindgard is the leading provider of AI Red Teaming solutions. | $30M / Series A / Aug 12, 2026 | ||
| NeuroBell are developing a novel medical device providing portable EEG monitoring with real-time &automated neonatal seizure alerts at the bedside. | $5.5M / Jun 29, 2026 | ||
| Ubotica is to deploy advanced Artificial Intelligence technologies on board every satellite. | $11M / Venture - Series Unknown / Jun 23, 2026 | ||
| Vertigenius designs and deploys customized exercises using an easy-to-use clinician portal and even uses a Vertigenius head sensor to consult and manage patients with dizziness and imbalance. | $3M / Venture - Series Unknown / Apr 08, 2026 | ||
| Neurent Medical is a medical device startup that develops non-surgical treatments for inflammatory sino-nasal diseases. It was founded in 2015 by Brian Shields and David Townley in Oranmore, Galway, Ireland. | $74.5M / Series C / Feb 11, 2026 | ||
| Equal1 is accelerating the introduction of useful, cost-effective quantum computers within a three-year time horizon. The company has developed a disruptive, scalable and cost-effective quantum computing technology, based on a commercially available silicon semiconductor process. Our solution uses nanometer-scale quantum dots to form qubits on astandard silicon CMOS process. Along with silicon qubits, we have integrated all functions required for a quantum processing unit (QPU) – the brain of the quantum computer – which operates at 3 kelvin with over 10 million transistors. This is the first integrated quantum processing unit of its kind. | $60M / Jan 15, 2026 | ||
| Luminate is an oncology-focused healthtech and tech-enabled services company that partners with payers, providers, and people with cancer to reduce the cost of cancer care while improving quality of life and outcomes for patients. The company offers a portfolio of services and technologies that enable home-based cancer treatment, adverse eventmonitoring, and prevention of drug-induced side effects. | $21M / Series A / Jan 07, 2026 | ||
| Mirror Security provides technology that allows AI systems to process encrypted data without exposing it in plain form. The VectaX encryption engine is designed for AI workloads and is available as an SDK for integration with existing systems. The service includes encrypted AI memory, enabling storage of prompts, history, and vector databases whilekeeping them encrypted. It also offers encrypted AI models where inputs, outputs, and layers remain encrypted end to end. The Discover tool scans AI platforms for threats such as prompt injection, model leaks, and other risks. AgentIQ monitors AI agents in real time, detects unusual behavior, and keeps detailed logs for auditing and compliance. Mirror Security also supports compliance with data protection regulations through cryptographic guarantees. | $2.5M / Pre-Seed / Dec 02, 2025 | ||
| SOC Prime operates the world's largest and most advanced platform for collaborative cyber defense following its mission to transform threat detection with the power of collective cybersecurity expertise. Relied upon by over 11,000 global organizations, SOC Prime supercharges cybersecurity operations enabling teams to hunt for threats anddefend against attacks easier, faster, and more efficiently than ever before. Founded in 2015 by security analysts and Detection Engineers, we have built the platform to help companies establish basic security practices, improve threat visibility, and advance automated incident response. Our technology helps enterprises, governments, MSSPs, and MDR providers overcome the challenges of the global talent shortage, threat complexity, alert fatigue, data quality, and cost-efficiency. SOC Prime Platform enables security teams to address the challenges of building advanced and threat-specific detections, organize and execute around strategic detection objectives, and manage the deployment of content at scale across a diverse range of security analytics tools. We serve Fortune-100 and Forbes Global 2000 enterprises, as well as government organizations by providing a platform for global collaboration, open-source technologies, and the highest level of support.SOC Prime helps customers centrally source and support detection content to maximize the value of their existing security investments. Powered by collaboration from a global cybersecurity community, our Detection as Code platform curates the most up-to-date Sigma rules and integrates with over 44 SIEM, EDR, and Data Lake platforms. Flexible subscriptions ensure that both organizations and individual operators can benefit from enhanced cyber defense capabilities. Threat Detection Marketplace, the world's leading and largest security analytics repository powered by SOC Prime Platform, delivers access to a constantly growing library of 500,000+ context-enriched detections aligned with the MITRE ATT&CK® framework and continuously updated. SOC Prime supports continuous content quality improvement backed by feedback from 11,000+ organizations, 55,000+ users, and 800 threat bounty members, who actively contribute their own detection content to the SOC Prime Platform while receiving recurring rewards for their input. Our team is diverse and distributed, comprising seasoned security experts with 20+ years of experience in the industry, creative designers, multilevel software developers, young and ambitious security researchers, analysts, and business leaders. We strongly believe that cybersecurity is one of the major challenges for humanity and can be improved by open source, knowledge sharing, and a performance-driven culture. | Venture - Series Unknown / Nov 04, 2025 | ||
| Output Sports operates as a sports tech start-up. We are revolutionizing the way athletic staff optimize sports performance. Using advanced signal processing and machine learning techniques we have developed an end-to-end solution that can test multiple components of athletic performance and track training programmes with a single wearable sensor. | $4.8M / Seed / Jan 30, 2025 | ||
| See all 154 investments → | |||
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FAQ
What does Atlantic Bridge invest in?
Atlantic Bridge invests primarily in Software, Artificial Intelligence and Information Technology startups, most often at Series A and Series B stage. Most of the 154 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Atlantic Bridge's check size?
Atlantic Bridge typically joins rounds of $1.1M–$7.5M at Seed, $5M–$26M at Series A and $10M–$62M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Atlantic Bridge participates in.
How do I contact Atlantic Bridge?
Public channels for Atlantic Bridge include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at Atlantic Bridge?
The team at Atlantic Bridge includes Brian Long (Managing Partner), Gerry Maguire (Co-Founder and General Partner) and Helen McBreen (Partner), among 12 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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