Employee Benefit Plans

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Employee Benefit Plans

(9) Employee Benefit Plans

In September 2016, the Company adopted a Section 401(k) Retirement Savings Plan for the benefit of eligible employees. All employees become eligible to participate in the plan the first of the month following their hire date and may contribute their pretax or after–tax salary, up to the Internal Revenue Service annual contribution limit. The Company makes contributions to the 401(k) plan under a safe harbor provision, whereby the Company contributes 3% of each participating employee’s annual compensation. The Company contributions vest immediately. The Company contributed and included in operating expense $0.6 million, $0.5 million, and $0.7 million for each of the years ended December 31, 2021, 2020, and 2019, respectively.