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Sono-Tek Corporation reported a strategic shift towards higher-value production systems in Q4 2026, with operating income growing 81% year-over-year despite modest 2% revenue growth. Gross margins expanded to 51% as customers increasingly purchased integrated solutions rather than hardware alone. The medical sector drove growth, rising 54% year-over-year from balloon catheter coating demand, whilst clean energy revenue declined 19% due to government policy changes affecting electrolysis orders. The US accounted for 67% of revenue, benefiting margins through reduced international costs. Management projects relatively flat to modestly higher revenue for fiscal 2027, with limited second-half visibility due to clean energy uncertainty. A new semiconductor wafer coating machine will launch in late 2026, with revenue expected in fiscal 2028. The company holds $14.8 million in cash with zero debt.

Sono-Tek Corporation reported its fiscal 2026 results, marking a second consecutive year with revenue exceeding $20 million and an eighth straight quarter above $5 million. The ultrasonic coating systems manufacturer posted a 51% gross margin, with operating income up 81% and net income up 42% year-over-year. The company's backlog stands at $9.1 million. CEO Steve Harshbarger attributed margin expansion to favourable product mix, including more high-average-selling-price production systems, and increased US market sales. The medical sector is showing strong momentum across stent coating and diagnostic devices, whilst electronics business continues expanding. However, near-term orders for electrolysis-related systems have declined following government policy changes. Sono-Tek anticipates continued revenue growth in the first half of fiscal 2027, with relatively flat to modestly higher full-year revenue expected.

Sono-Tek announces technical collaboration with Diamond Quanta to support precision coating integration for engineered diamond applications. MILTON, N.Y., March 17, 2026 (GLOBE NEWSWIRE) - Sono-Tek Corporation (Nasdaq: SOTK), a global provider of precision ultrasonic coating systems, today announced a technical collaboration with Diamond Quanta (DQ), a developer of engineered diamond-on-glass and engineered-diamond materials for optics, thermal, semiconductor, and quantum systems. Under the collaboration, Sono-Tek's precision ultrasonic coating technology is expected to be integrated into Diamond Quanta's manufacturing workflow to support repeatable thin-film deposition and multilayer integration across engineered diamond applications. The collaboration is focused on strengthening process repeatability, film uniformity, and manufacturability as Diamond Quanta advances its materials platform toward OEM qualification and scalable manufacturing environments. Supporting Standardized Process Architecture Diamond Quanta has described its approach as a standardized process architecture designed to integrate engineered diamond interfaces into repeatable, qualification-ready manufacturing workflows compatible with existing semiconductor and electronics toolchains. Through this collaboration, Sono-Tek systems are expected to support: * Repeatable thin-film deposition within multilayer diamond stacks * Improved coating uniformity and process consistency * Structured progression toward OEM qualification environments * Alignment with established semiconductor and electronics manufacturing ecosystems "Sono-Tek's precision ultrasonic coating systems are designed to enable consistent, high-uniformity thin-film integration across advanced device architectures," said Steve Harshbarger, Chief Executive Officer of Sono-Tek. "We are pleased to collaborate with Diamond Quanta as they advance their engineered diamond technologies toward scalable manufacturing." "Establishing a repeatable manufacturing architecture requires not only breakthrough materials but standardized process modules that OEMs can adopt with confidence," said Adam Khan, Founder and CEO of Diamond Quanta. "Our collaboration with Sono-Tek strengthens the integration layer of our engineered diamond-on-glass platform and supports disciplined progression toward scalable qualification." About Sono-Tek Sono-Tek Corporation (Nasdaq: SOTK) designs and manufactures precision ultrasonic coating systems used to apply thin films across a wide range of advanced manufacturing applications. The Company's systems serve customers in microelectronics, alternative energy, medical devices, advanced industrial manufacturing, and research and development markets worldwide. Sono-Tek's technology enables uniform, repeatable thin-film deposition and supports the transition from development to scalable production environments. The Company distributes its products globally through a combination of direct sales personnel, independent distributors, and sales representatives. Safe Harbor Statement This news release contains forward looking statements regarding future events and the future performance of Sono-Tek Corporation that involve risks and uncertainties that could cause actual results to differ materially. These "forward-looking statements' are based on currently available competitive, financial and economic data and our operating plans. They are inherently uncertain, and investors must recognize that events could turn out to be significantly different from our expectations and could cause actual results to differ materially. These factors include, among other considerations, general economic and business conditions, including political, regulatory, tax, competitive and technological developments affecting our operations or the demand for our products; inflationary and supply chain pressures; continued strength of sales to the medical device market; continued private and public funding for the clean energy sector; continued strong demand for Sono-Tek's suite of thin film coating solutions and application consulting services in the clean energy and other markets; maintenance of order backlog; evolving tariff policies; timely development and market acceptance of new products and continued customer validation of our coating technologies; adequacy of financing; capacity additions, the ability to enforce patents; maintenance of operating leverage; consummation of order proposals; completion of large orders on schedule and on budget; successful transition from primarily selling ultrasonic nozzles and components to a more complex business providing complete machine solutions and higher value subsystems; and realization of quarterly and annual revenues within the forecasted range of sales guidance. We undertake no obligation to update any forward-looking statement. Sono-Tek Corp. Stephen J. Bagley Chief Financial Officer Ph: (845) 795-2020 [email protected]