Washington Harbour Partners

Washington Harbour Partners is an investment firm that deploys capital in the U.S. Washington Harbour Partners seeks to earn superior risk-adjusted returns for its investors over the long term. The firm’s fundamentally oriented investments focus primarily on the technology, media, communications, fintech, and business services sectors. The public equity efforts emphasize deep due diligence on individual companies using a private-equity approach. The private equity strategy targets growth-oriented private companies.

Mina Faltas

Founder, Managing Partner and CIO

16 past transactions

Apex - Spacecraft Manufacturing

Series C in 2025
Apex is a manufacturer of commercial orbital transportation services spacecraft satellite buses that are designed to provide an approach to space. The company specializes in a combination of software, vertical integration, and hardware for spacecraft manufacture, allowing space enterprises to execute their missions by communicating with and launching vehicles using spacecraft.

Shield AI

Series F in 2025
Shield AI Inc is an artificial intelligence robotics company based in San Diego, California, focused on developing advanced AI-powered systems for national security and first responders. Incorporated in 2015, the company specializes in creating technologies that enhance the safety of military personnel and civilians. Its flagship products include Nova, an autonomous quadcopter drone equipped with lidar technology that operates effectively in GPS-denied environments, and Hivemind, an AI framework that allows various unmanned vehicles to learn from real and synthetic experiences, enabling autonomous operations without direct human control. Additionally, Shield AI has developed the V-BAT, a vertical takeoff and landing aircraft that can navigate contested environments and has been utilized in regions like the Black Sea and the Middle East. The company aims to transform defense operations by leveraging cutting-edge AI and machine learning technologies to execute complex tasks in dynamic and denied environments.

Epirus

Series D in 2025
Epirus, Inc. is a technology company based in Hawthorne, California, specializing in the design and development of advanced defense systems that utilize artificial intelligence and directed energy. Founded in 2018, the company focuses on creating solid-state, software-defined high-power microwave solutions aimed at countering unmanned aircraft systems and other asymmetric threats. Its flagship product, ELECTROMAGNETIC PULSE, serves as a counter-infrastructure solution that can simultaneously target multiple threats, effectively neutralizing drones and swarms. By integrating AI and machine learning with advanced electronics, Epirus enhances the detection and tracking of objects of interest, offering innovative capabilities in electronic warfare and power management for both defense and commercial sectors.

Hidden Level

Series C in 2025
Hidden Level specializes in advanced technologies for passive radar and drone detection, focusing on RF spectrum signal analysis. The company offers a comprehensive Airspace Monitoring Service (AMS) that employs networks of passive sensors to detect and track various aerial vehicles, including drones, across extensive geographical areas. This service is tailored for critical sectors such as infrastructure, defense, and public safety, ensuring compliance with privacy regulations. In addition to drone detection, Hidden Level provides custom-built sensor technology, classical systems engineering, data modeling and analysis, field testing, printed circuit board design, and full product life cycle management. Their solutions aim to enhance safety and productivity in low-altitude air traffic monitoring for aerospace component manufacturers.

Thunder

Venture Round in 2024
Thunder is a management consulting company focused on delivering business value through intelligent frameworks and solutions. The company assists leading brands in addressing complex challenges primarily using Salesforce. In addition to its consulting services, Thunder operates an online data analysis platform that transforms data into impactful business outcomes. This platform includes a service cloud for customer support and marketing clouds for digital marketing campaigns, empowering users to leverage data analysis for a competitive edge.

Radiant

Series C in 2024
Radiant is a clean energy startup based in Los Angeles, California, that specializes in the development of portable nuclear microreactors. Founded in 2019, the company aims to provide an alternative to fossil fuels through its innovative microreactor technology. Designed to fit within a shipping container, these reactors can be easily transported by air, ship, or road, making them suitable for both military and commercial applications. The Kaleidos microreactor, in particular, is notable for offering a zero-emissions power source, ideal for remote locations and critical power needs.

Hidden Level

Series B in 2024
Hidden Level specializes in advanced technologies for passive radar and drone detection, focusing on RF spectrum signal analysis. The company offers a comprehensive Airspace Monitoring Service (AMS) that employs networks of passive sensors to detect and track various aerial vehicles, including drones, across extensive geographical areas. This service is tailored for critical sectors such as infrastructure, defense, and public safety, ensuring compliance with privacy regulations. In addition to drone detection, Hidden Level provides custom-built sensor technology, classical systems engineering, data modeling and analysis, field testing, printed circuit board design, and full product life cycle management. Their solutions aim to enhance safety and productivity in low-altitude air traffic monitoring for aerospace component manufacturers.

Raft

Private Equity Round in 2024
A niche consulting organization focused on Cloud Native, DevSecOps, and Modern Application Development for mission focused enterprises

SIXGEN

Acquisition in 2023
SixGen, LLC is a cybersecurity firm headquartered in Annapolis, Maryland, founded in 2014. The company specializes in offering a comprehensive range of cybersecurity services designed to protect critical assets and infrastructure against a backdrop of increasing global threats. SixGen employs a team of experienced data scientists, big data engineers, and cloud engineers to deliver services that include cyber assessments, incident response, security engineering, and the development of computer network operations. By leveraging advanced analytics and a holistic approach, SixGen assists both commercial and federal clients in understanding and mitigating their cybersecurity risks effectively.

Adlumin

Series B in 2023
Adlumin Inc. operates a security and compliance automation platform designed to identify threats, malfunctions, and operational failures within IT environments. Founded in 2016 and based in Washington, D.C., the company collects and indexes data from various sources, including network traffic, web servers, firewalls, and custom applications. Its platform leverages advanced technologies such as machine learning and analytics to assist IT teams in security orchestration and incident response. Key features include One-Touch Compliance Reporting, which simplifies the process of generating reports for financial auditors. Adlumin aims to support mid-market organizations by enabling effective threat hunting, vulnerability management, and compliance, thereby enhancing their cybersecurity posture.

Sevco Security

Venture Round in 2023
Sevco Security, Inc., founded in 2020 and based in Austin, Texas, specializes in cyber security products and services. The company offers a unified asset intelligence platform that focuses on IT asset visibility and cyber asset management. This cloud-native platform is designed to address the challenges posed by an extended attack surface, creating a reliable data repository for all organizational devices, users, and applications. Sevco Security's solution continuously updates the inventory of assets, encompassing IT, public and private cloud environments, IoT devices, operational technology, and remote users. By autonomously identifying and closing security gaps, the platform helps organizations manage risk more effectively and improve incident response times while ensuring compliance across various deployments.

RED 6

Series B in 2023
RED 6 Inc. is a company specializing in outdoor augmented reality solutions aimed at enhancing air combat training. Founded in 2017 and headquartered in Santa Monica, California, it has developed the Airborne Tactical Augmented Reality System (ATARS). This innovative system allows real pilots in actual aircraft to engage with synthetically generated enemy threats in real time, utilizing augmented reality visors and an AI-driven multiplayer network. The technology also incorporates biometric feedback loops to optimize training experiences. RED 6's solutions are designed to revolutionize military training applications, enabling enhanced readiness and operational effectiveness for armed forces worldwide. In addition to military applications, the technology holds potential for various industries, including entertainment, sports, and medicine.

Solsten

Series B in 2022
Solsten is an AI company based in Berlin, Germany, that specializes in understanding human behavior in the digital landscape to enhance customer experience. Founded in 2018 by Joe Schaeppi and Bastian Bergmann, the firm offers a customer engagement platform that assists decision-makers in the gaming industry, including executives, researchers, and marketing professionals from medium-to-large studios. Solsten's platform aims to improve user engagement by helping developers locate, retain, and monetize players effectively. It facilitates sustainable monetization strategies, aids in game development, and enables studios to reach untapped audiences, ultimately streamlining the development process and bringing products to market more efficiently.

CollabraLink Technologies

Acquisition in 2021
CollabraLink Technologies is an information technology company that provides enterprise software solutions and program support.

AviaGames

Series B in 2021
AviaGames, founded in 2017, specializes in developing engaging mobile gaming applications that emphasize fair competition through a sophisticated algorithm. The company operates a gaming studio that publishes real-money skill-based games, including various genres such as casino, puzzle, action, card, math, and brain games. Its flagship product, Pocket7Games, consolidates these diverse gaming categories under a single membership and wallet system, allowing players to transition smoothly between different games. AviaGames has quickly established itself in the gaming industry, achieving significant popularity with top rankings on the App Store and leading in monthly tournaments. While currently focused on the U.S. market, the company plans to expand into other regions, including the UK, in the near future.

Saildrone

Saildrone, Inc. specializes in the design and manufacture of wind and solar-powered autonomous surface vehicles, known as Saildrones, which facilitate cost-effective ocean data collection at scale. Founded in 2012 and based in Alameda, California, the company operates a fleet of these drones to gather live ocean data for various applications, including weather forecasting, oceanography, fish stock analysis, and environmental monitoring. Saildrone's vehicles have traveled over 500,000 nautical miles and spent more than 13,000 days at sea, generating high-resolution datasets that provide critical insights for climate science, maritime security, and ecological management. By utilizing real-time data transmission via satellite, Saildrone enables clients to monitor and mitigate potential ecological disasters, contributing to better understanding and management of global environmental challenges.
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