Defined Contribution Plan

6 Months Ended

12 Months Ended

Jun. 30, 2019

Dec. 31, 2018

Defined Contribution Plan

Defined Contribution Plan

12. Defined Contribution Plan

The Company adopted a 401(k) defined contribution plan on September 5, 2017, effective as of January 1, 2017, for all employees over age 21. Employees can defer up to 100% of their compensation through payroll withholdings into the plan subject to federal law limits. Effective January 1, 2018, the Company began matching contributions on deferrals at 100% of deferrals up to 3% of one’s contributions and 50% on deferrals over 3%, but not exceeding 5% of one’s contributions in order to satisfy certain non-discrimination tests required by the Internal Revenue Code. Employee contributions and any employer matching contributions made to satisfy certain non-discrimination tests required by the Internal Revenue Code are 100% vested upon contribution. Discretionary employer matches vest over a six-year period beginning on the second anniversary of an employee’s date of hire. The amount of matching contributions made during the three month periods ended June 30, 2019 and 2018 was $19,000 and $29,000, respectively, and $47,000 and $54,000 during the six month periods ended June 30, 2019 and 2018, respectively.

15. Defined Contribution Plan

The Company adopted a 401(k) defined contribution plan on September 5, 2017, effective as of January 1, 2017, for all employees over age 21. Employees can defer up to 100% of their compensation through payroll withholdings into the plan subject to federal law limits. Effective January 1, 2018, the Company began matching contributions on deferrals at 100% of deferrals up to 3% of one’s contributions and 50% on deferrals over 3%, but not exceeding 5% of one’s contributions in order to satisfy certain non-discrimination tests required by the Internal Revenue Code. Employee contributions and any employer matching contributions made to satisfy certain non-discrimination tests required by the Internal Revenue Code are 100% vested upon contribution. Discretionary employer matches vest over a six-year period beginning on the second anniversary of an employee’s date of hire. The amount of matching contributions made during the years ended December 31, 2018 and 2017 was $0.1 million and zero, respectively.