BWX Technologies, Inc.

Our research and development activities are related to the development and improvement of new and existing products and equipment, as well as conceptual and engineering evaluation for translation into practical applications. These activities include the development of isotope production, medical radiochemical and radiopharmaceutical production and a variety of advanced technologies in the areas of additive and autonomous manufacturing, space nuclear power and propulsion, and high-temperature gas-cooled reactors, among others. These projects are sponsored and funded through internal research and development and by a number of commercial and government customers.

We charge the costs of research and development unrelated to specific contracts as incurred. Excluding customer-sponsored research and development, the majority of our activities in this area for the years ended December 31, 2025, 2024 and 2023 related to the development of technologies in the area of medical and industrial radioisotopes, radiopharmaceuticals, additive and autonomous manufacturing, advanced reactors and nuclear fuel. Contractual arrangements for customer-sponsored research and development can vary and include contracts, cost-sharing arrangements, cooperative agreements and grants.

See Note 1 to our consolidated financial statements included in this Report for further information on research and development.