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REVENUE RECOGNITION
 9 Months Ended
Sep. 30, 2021
REVENUE RECOGNITION.  
REVENUE RECOGNITION

NOTE 2 REVENUE RECOGNITION

Gross-to-Net Sales Adjustments

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To date, our only source of product revenue has been from the U.S. sales of UKONIQ, which we began shipping to our customers in February 2021. We record our best estimate of sales discounts and allowances to which customers are likely to be entitled. The reconciliation of gross product sales to net product sales by each significant category of gross-to-net adjustments was as follows for the three and nine months ended September 30, 2021:

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(in thousands)

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Three months ended

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Nine months ended

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September 30, 2021

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September 30, 2021

Gross product revenue

$

2,528

​

$

5,167

Gross-to-net adjustments:

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​

​

​

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Chargebacks and administrative fees

​

(292)

​

​

(487)

Trade discounts and allowances

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(128)

​

​

(222)

Government rebates and co-payment assistance

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(103)

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(179)

Sales returns and allowances

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(13)

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​

(25)

Total gross-to-net adjustments(1)

$

(536)

​

$

(913)

Net product revenue

$

1,992

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$

4,254

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(1) As of September 30, 2021 approximately $0.4 million of estimated gross-net-accruals have been recorded as a reduction of accounts receivable, net and within accounts payable and accrued expenses on the condensed consolidated balance sheets.