A summary of the Company’s stock option activity for the three months ended March 31, 2023 is as follows:


	Number of Options	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life
				(in years)
Outstanding at December 31, 2022	5,114,490	$	9.50	4.7
Granted	—	—
Exercised	(23,989)	2.68
Forfeited/expired	(540,987)	8.97
Outstanding at March 31, 2023	4,549,514	$	9.60	4.5

At March 31, 2023, total remaining stock-based compensation expense for unvested stock option awards was $1.3 million, which is expected to be recognized over a weighted-average period of 1.9 years. For the three months ended March 31, 2023 and 2022, the Company recorded stock-based compensation expense for stock option awards of $0.3 million and $0.4 million, respectively.

Activity in connection with restricted stock units is as follows for the three months ended March 31, 2023:


	Number of Shares	Weighted- Average Grant Date Fair Value
Non-vested — December 31, 2022	10,007,869	$	4.04
Granted	5,421,366	2.49
Vested	(1,024,364)	3.95
Forfeited	(610,111)	3.78
Non-vested — March 31, 2023	13,794,760	$	3.45

At March 31, 2023, total remaining stock-based compensation expense for non-vested restricted stock units was $39.6 million, which is expected to be recognized over a weighted-average period of 2.8 years. For the three months ended March 31, 2023 and 2022, the Company recorded $4.4 million and $3.1 million in stock-based compensation expense for restricted stock units, respectively.

The Company recorded stock-based compensation cost relating to stock options and restricted stock units in the following categories on the accompanying condensed consolidated statements of comprehensive loss (in thousands):


	Three Months Ended March 31,
	2023		2022
Cost of revenue	$	50	$	37
Sales and marketing	1,895		1,175
Technology and development	1,017		900
General and administrative	1,746		1,386
Total stock-based compensation expense	4,708		3,498
Amount capitalized to internal software use	222		246
Total stock-based compensation cost	$	4,930	$	3,744