Allegro Microsystems, INC. Stock: price and insider trades · United States · SEC (Form 4)

About Allegro Microsystems, INC.

Allegro MicroSystems, Inc. (ticker: ALGM) is a U.S.-listed semiconductor company traded on Nasdaq in the United States. Headquartered in Manchester, New Hampshire, United States, Allegro designs and markets sensor integrated circuits and application-specific analog power integrated circuits. The company is positioned in technology markets where energy efficiency, reliability, precision and size matter most, especially automotive, electric vehicles, ADAS, industrial automation, data centers and selected clean-energy applications. Founded in 1990, Allegro has built its franchise over more than three decades of experience in magnetic sensing and power-management technologies. The company highlights a history of early technology leadership in magnetic sensing and related semiconductor innovations, and it emphasizes a broad installed base across global customers. Allegro states that it serves more than 10,000 customers worldwide and offers a portfolio of more than 1,500 devices, underscoring a specialized but diversified product platform. Its core value proposition is to sense, regulate and drive electromechanical systems in demanding environments. Allegro’s product lines are centered on current sensors, position and speed sensors, motor drivers, and power-control and interface ICs for embedded electronics. These solutions are used in vehicle electrification, ADAS safety systems, thermal management, industrial motor control, robotics, renewable energy infrastructure and high-performance computing environments. In the analog semiconductor universe, Allegro holds a strong niche, particularly in magnetic sensing for automotive applications, where it is widely regarded as a specialist with deep customer relationships and longstanding design-win credibility. Geographically, Allegro operates with a global footprint spanning engineering, manufacturing, support and sales activities across multiple regions. Its annual report points to a broad international presence and a fabless business model that relies on external manufacturing partners, allowing the company to focus on design, innovation and product roadmaps. This structure is typical of asset-light semiconductor companies that prioritize intellectual property and application expertise over owned wafer fabrication. Recent developments have been important for the investment case. Allegro reported improving quarterly performance, with growth driven by automotive, e-mobility and industrial demand during fiscal 2025/2026. The company also introduced new TMR current sensors and expanded its isolated gate-driver portfolio for silicon-carbide power design, targeting AI data centers and EV platforms. In 2025, Allegro disclosed an unsolicited acquisition proposal from onsemi, which reinforced the strategic value of its sensing and power franchise. Overall, Allegro combines a focused technology niche with exposure to structural growth themes such as electrification, automation and energy efficiency.