The Company has established a 401(k) plan that qualifies as a deferred compensation arrangement under Section 401 of the Internal Revenue Code. All U.S. employees over the age of 21 are eligible to participate in the plan. The Company contributes 100% of eligible employee’s elective deferral up to 4% of eligible earnings. The Company made matching contributions to participants’ accounts totaling $0.5 million, $0.3 million and $0.3 million during the years ended December 31, 2021, 2020 and 2019, respectively.