Revenues from domestic and export sales are attributed to a global geographic region according to the location of the customer’s primary manufacturing or operating facilities. Revenues from domestic and export sales to unaffiliated customers for the three months ended May 31, 2026, and May 31, 2025, respectively are as follows:

For the three months ended May 31, 2026 and May 31, 2025, approximately 64% and 53%, respectively, of the Company’s sales have been attributable to contracts with customers whose products are sold to the United States government. The remaining 36% and 47%, respectively of sales are for non-military, scientific and industrial applications, or to distributors where we do not have end user information.

Customers who contributed ten percent or more of revenues for the three months ended May 31, 2026, and May 31, 2025, respectively are as follows: