The Company contracts with certain private payor organizations, primarily insurance companies and pharmacy benefit managers, to provide rebates with respect to utilization of the products and contracted formulary status. The Company accrues estimated rebates based on actual average rebate amounts and estimated percent of product that will be prescribed to qualified patients and records the rebate as a reduction of product revenues. Accrued commercial rebates are included in accrued trade discounts and rebates on the consolidated balance sheets. Government Rebates The Company participates in certain federal and state government rebate programs such as the Medicaid Drug Rebate Program, TRICARE Retail Refunds Program, and Medicare Part D Program. The Company accrues estimated rebates and discounts based on actual average rebate amounts and estimated percent of product that will be prescribed to qualified patients and records the rebates as a reduction of product revenues. Accrued government rebates are included in accrued trade discounts and rebates on the consolidated balance sheets. Chargebacks The Company arranges with certain commercial and government entities allowing them to buy products directly from wholesalers at specific prices. These entities purchase products through wholesalers at the discounted price, and the wholesalers charge the difference between their list price and the discounted price back to the Company. The Company accrues estimated chargebacks based on estimated percentages of products sold to these entities, contract prices, and estimated levels of inventory in the distribution channel and records the chargebacks as a reduction of product revenues. Accrued chargebacks are recorded as an allowance against trade receivables on the consolidated balance sheets. Product Returns For some products, the Company's customers generally have the right to return product during the period beginning six months prior to the product expiration date and up to one year after the product expiration date. The Company does not have extensive history of product returns and uses various factors to estimate the provision for returns, including the launch date of products, third-party industry data for comparable products in the market and estimated channel inventory data. In a reporting period, the Company may decide to constrain revenue for product returns based on information from various sources, including channel inventory levels, inventory dating, prescription data, the expiration dates of product currently being shipped, price changes of competitive products and introductions of generic products. While the Company believes that the returns reserve is sufficient to avoid a significant reversal of revenue in future periods, if it were to increase or decrease the rate by 1%, it would have a $0.6 million impact on revenue in the year ended December 31, 2021. The Company records estimated product returns in accrued returns reserve on the consolidated balance sheets and as a reduction of product revenues. Prompt Payment Discounts As an incentive for prompt payment, the Company offers a discount to most customers. The Company expects that all eligible customers will comply with the contractual terms to earn the discount, and, therefore, the Company accrues the discount on all eligible sales. The Company records the discount as an allowance against trade accounts receivable on the consolidated balance sheets and as a reduction of product revenues. Service Fees The Company records service fees paid to the wholesaler and specialty pharmacy customers for distribution and inventory management services as a reduction to product revenues. The Company accrues estimated service fees based on contractually determined amounts. Accrued service fees are included in accrued trade discounts and rebates on the consolidated balance sheets. Concentration of credit risk For the years ended December 31, 2021 and 2020, four customers accounted for 95% and 92% of the Company’s gross product revenues, respectively. The same four customers accounted for 99% and 98% of the trade accounts receivable, net at December 31, 2021 and December 31, 2020, respectively. XERIS BIOPHARMA HOLDINGS, INC. Notes to Consolidated Financial Statements 96
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