ONE Stop Systems, INC.: management transactions · United States · SEC (Form 4)

About ONE Stop Systems, INC.

One Stop Systems, Inc. (OSS) is a U.S.-based technology company listed on the Nasdaq in the United States. For French, Belgian, and Swiss investors, the key investment case is its niche positioning: OSS designs and sells rugged high-performance computing systems for edge environments where low latency, durability, and reliability matter. The company focuses on artificial intelligence (AI), machine learning, autonomy, sensor fusion, and real-time processing. Its headquarters are in Escondido, California, north of San Diego. ([s3.amazonaws.com](https://s3.amazonaws.com/b2icontent.irpass.cc/2595/rl163325.pdf)) OSS has evolved through a deliberate specialization strategy. Over time, the company has concentrated on rugged edge compute and PCIe-based architectures. A meaningful milestone was the 2018 acquisition of Concept Development, Inc. (CDI), which was integrated into OSS’s Escondido headquarters operation and expanded the company’s design, test, and manufacturing capabilities in military and commercial aerospace applications. OSS also maintains an international footprint through its German subsidiary, OSS GmbH, while keeping its strategic center of gravity in the United States. ([onestopsystems.com](https://onestopsystems.com/pages/cdi)) Operationally, OSS’s main business lines include rugged servers, GPU compute accelerators, high-density flash storage arrays, PCIe switch fabrics, adapters, and proprietary software for system management and data-flow acceleration. The company targets defense, commercial aerospace, healthcare, industrial, and autonomous-system customers. OSS positions itself as an “enterprise class” edge-computing provider, combining specialized hardware with embedded software and integration expertise. ([s3.amazonaws.com](https://s3.amazonaws.com/b2icontent.irpass.cc/2595/rl163325.pdf)) From a competitive standpoint, OSS operates in a specialized segment rather than competing head-on with broad-line hardware vendors. Its differentiation comes from ruggedization, customization, and close alignment with defense and mission-critical programs. That niche focus is reinforced by quality and compliance credentials, including ISO 9001:2015, AS9100D, and CMMC 2.0 Level 2 compliance, which are especially relevant for U.S. government and contractor customers. ([onestopsystems.com](https://onestopsystems.com/pages/company)) Recent developments support a turnaround narrative. In its March 18, 2026 fourth-quarter release, OSS reported Q4 2025 revenue up 70.2% year over year, record quarterly gross margin of 58.5%, and quarterly net income from continuing operations. The company also completed the sale of Bressner Technology GmbH on December 30, 2025, helping streamline the portfolio and sharpen focus on higher-margin core opportunities in rugged enterprise compute. In its April 15, 2026 shareholder letter, management highlighted an approximate 1.2x book-to-bill ratio and annual 2025 revenue growth of more than 30%. ([s3.amazonaws.com](https://s3.amazonaws.com/b2icontent.irpass.cc/2595/rl163325.pdf))