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Marathon Venture Capital

Lempesi 5-7, Athens, Attiki, 11742, Greece

Overview

Marathon Venture Capital is an early-stage venture capital fund on a mission to help the most ambitious Greek founders build world-class technology companies. It caters to those who are willing to go after the seemingly impossible. Those who persevere in the face of adversity. The ones who will ultimately get to redefine entire industries. Marathon's team has built communities and companies from the ground up, and loves to collaborate with like-minded people taking on big challenges. Marathon partners’ track record includes Bugsense, Taxibeat, Workable, and Resin.io, among others. Marathon's seed rounds (typically with €1m - €1.5m for 15-20% of equity) and judges its performance based on top investors joining to follow up.

Total investments
29
Lead investments
21
Investments · 12mo
3
Active investors
4

Sector focus

  • Business Development
  • Finance
  • Financial Services
  • Venture Capital
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Investment portfolio

  • Straion

    Led · Seed · Feb 2026

    Straion transforms static engineering documentation into machine-readable guardrails that proactively guide AI code generators such as GitHub Copilot, Cursor and Claude Code. The platform centralises architectural standards, security mandates and naming conventions in a single rule hub, dynamically retrieves the relevant rules for each task, and validates AI-generated plans before implementation. By closing the ‘documentation gap,’ Straion reduces drift, boosts development velocity and increases confidence in code quality for large engineering teams. The product was created by Dynatrace veterans Lukas Holzer, Fabian Friedl and Katrin Freihofner, who experienced first-hand the difficulty of enforcing invisible organisational rules at scale. Funding will be directed toward deeper rule governance capabilities, broader workflow integrations and hiring across AI and full-stack engineering. No operating metrics or revenue figures were disclosed in the article.

  • Pallma AI

    Led · Seed · Jan 2026

    Pallma AI is a London-based startup developing an AI-native security layer for autonomous enterprise systems. Its platform plugs into existing technology stacks, gathers application and system data, and employs proprietary AI models to identify threats such as prompt injection, unintended data exposure and unsafe agent behaviour as they happen. The product combines real-time detection with actionable guidance and automated remediation, allowing enterprises to retain oversight and control as AI agents operate with limited human supervision. Pallma AI also runs vulnerability analyses to find weaknesses before attackers can exploit them, continuously hardening customer deployments. The company targets organisations moving large language models and autonomous agents from pilot projects into core workflows. With fresh capital, it intends to grow its team, speed up product development and support increasing demand for its security platform. The article did not disclose revenue, user numbers or other operating metrics.

  • PolyModels Hub

    Led · Series A · Nov 2025

    PolyModels Hub develops ModelFlow, an integrated platform that combines AI, advanced modelling, simulation, and data-driven workflows to accelerate the design, testing, and optimisation of drug manufacturing processes. By unifying process knowledge and workflow management in a single environment, the software helps scientists and engineers move candidates from lab experiments to large-scale production faster and with lower cost and risk. Within its first 18 months, the company reports delivering significant impact for large pharmaceutical partners, prompting those collaborations to expand globally. Following its Series A financing, PolyModels Hub intends to grow its engineering and product teams and further enhance its core platform. Future plans include rolling out scalable solutions for process and regulatory workflows and deepening capabilities for complex biologics. The ultimate goal is to support the broader digitalisation of biopharma process development, enabling quicker delivery of new medicines to patients.

  • Delian Alliance Industries

    Led · Series A · Jul 2025

    Delian Alliance Industries develops low-cost, rapidly deployable defense systems, starting with solar-powered surveillance towers that monitor Greek borders and detect wildfires on remote islands. Its product pipeline includes the "Interceptigon" series of concealed autonomous aerial and sea drones and vessels, including a two-meter suicide vessel designed to be pre-positioned on the seabed and remotely activated. The company says it has patented this approach and uses commercial materials to manufacture at scale and low cost. Founder Dimitrious Kottas draws on academic work in GPS-denied navigation and years at Apple’s Special Projects Group to drive the company’s perception and autonomy technology. Delian is pursuing cross-border sales in Europe and recently submitted a bid for a German tender as a test case for scaling beyond Greece. The startup emphasizes resilience, efficiency and competitive pricing as ways to overcome Europe’s fragmented defense market. Lambda Automata develops an AI-first stack of hardware, software and AI to deliver real-time, analyst-grade intelligence for critical theaters. The team combines prior experience from Apple, Palantir and the Hellenic Army Academy and operates with a mission-driven, Silicon Valley startup culture. Its systems are already deployed for wildfire monitoring as well as land border and coastal surveillance. The company aims to address both civil-protection challenges (wildfires, floods) and defense needs as adversaries deploy inexpensive, innovative weapons. With proceeds from the new round the company plans to grow its R&D team, launch new products and establish a foothold in the UK as it expands internationally. The product and market focus position Lambda Automata as a pan‑European supplier for strategic autonomy and allied security needs.

  • Progressive Robotics

    Led · Seed · Jan 2025

    Progressive Robotics develops AI-driven, no-code automation software that allows operators to deploy and reprogram robotic arms without specialist skills. Its offerings include a mixed-case palletizer designed to optimize space utilization and improve stability and safety in fulfillment and manufacturing environments. The company has implemented solutions across multiple industries, including food production and logistics. Progressive Robotics has partnered with robotic OEMs such as ABB Robotics, Elite Robots, and Schmalz to ensure seamless hardware integration. The startup plans to scale its technology and expand globally to bring advanced robotics capabilities to SMEs. It recently completed a €1.55M seed funding round to support product development, operational scaling, and international growth.

Team