Segment Information

12 Months Ended

Dec. 31, 2022

Segment Information

Segment Information

3. Segment Information

The Company operates in a single segment, which is the discovery (research), development, and commercialization of human therapeutics. The following table summarizes total revenue by geographic region based on the location of the Company’s customers or collaboration partners:

	Year Ended December 31,
(In thousands)	2022		2021		2020
US	$	51,124	$	55,273	$	70,319
Europe		222		38		1,538
Total revenue	$	51,346	$	55,311	$	71,857

The following table summarizes total revenue from each of the Company’s customers or collaboration partners who individually accounted for 10% or more of total revenue (as a percentage of total revenues) during the most recent three years:

	Year Ended December 31,
(% of total revenue)	2022		2021		2020
Viatris	95	%	79	%	63	%
Janssen	—	%	21	%	37	%