Note 4. Product Revenue and Accounts Receivable

In the U.S., the Company had product sales to certain customers that each accounted for more than 10% of total gross product sales. Sales for each of these customers as a percentage of the Company’s total U.S. gross product revenue are as follows:
 

As of December 31, 2025, one entity accounted for greater than 10% of accounts receivable, net. No other individual entity accounted for greater than 10%. The Company does not have a reserve related to credit losses against its accounts receivable and expects to collect accounts receivable in the ordinary course of business.