Business concentrations (Tables)

12 Months Ended

Dec. 31, 2021

Summary of Customers with Product Revenue and Accounts Receivable

Customers with product revenue equal to or greater than 10% of our total revenue for the periods indicated were as follows:

	2021	2020	2019
Customer A	11%	21%	37%
Customer B	15%	16%	11%
Customer C	17%	28%	13%
Customer E	12%	*	*
Customer F	*	*	12%
* Less than 10% of total product revenue

Summary of Vendors with Product Purchases and Accounts Payable

Vendors with product purchases equal to or greater than 10% of our total purchases for the periods indicated were as follows:

	2021	2020	2019
Catalent	33%	30%	24%
Vendor A	36%	25%	*
Vendor B	27%	36%	27%
Vendor I	*	*	35%
* Less than 10% of total product purchases

Accounts Receivable [Member]

Summary of Customers with Product Revenue and Accounts Receivable

Customers that accounted for 10% or greater of our accounts receivable as of the periods indicated were as follows:

	As of December 31,
	2021	2020
Customer A	*	17%
Customer B	21%	19%
Customer C	35%	25%
Customer D	11%	11%
* Balance was less than 10% of accounts receivable, gross

Accounts Payable [Member]

Summary of Vendors with Product Purchases and Accounts Payable

Vendors that accounted for 10% or greater of our accounts payable as of the periods indicated were as follows:

	As of December 31,
	2021	2020
Vendor E	19%	17%
Vendor F	20%	16%
Vendor G	*	10%
* Balance was less than 10% of total accounts payable