Property and Equipment, Net

6 Months Ended

Jun. 30, 2019

4. Property and Equipment, Net

Property and equipment consist of the following (in thousands):


	June 30,		December 31,
	2019		2018
		(unaudited)
Research equipment	$	9,348	$	7,787
Leasehold improvements		5,065		4,825
Computer equipment		360		167
Furniture and fixtures		93		70
Construction in progress		1,077		1,027
Property and equipment, gross		15,943		13,876
Less: accumulated depreciation and amortization		(3,614)		(2,469)
Property and equipment, net	$	12,329	$	11,407

Construction in progress at June 30, 2019 consists of the costs incurred for research equipment and for the build-out of additional lab and office space and at December 31, 2018 consists of the costs incurred for the build-out of a manufacturing suite at the Company’s headquarters in Beltsville, Maryland.

Depreciation and amortization expense was $582,000 and $1,145,000 for the three and six months ended June 30, 2019, respectively, and $387,000 and $763,000 for the three and six months ended June 30, 2018, respectively.