Total stock-based compensation expense is recorded in the condensed consolidated statements of operations as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Cost of revenue	$	67	$	112	$	133	$	240
Sales and marketing	1,131		2,186		2,545		4,615
Research and development	3,234		5,950		6,838		13,398
General and administrative	2,936		4,364		6,222		8,986
Total stock-based compensation	$	7,368	$	12,612	$	15,738	$	27,239

Under the Company’s 2021 Equity Incentive Plan, as of June 30, 2026, 49.9 million shares of Class A common stock were authorized, of which 30.0 million shares of Class A common stock were available for

future issuance. The number of shares reserved for issuance was increased in January 2026 pursuant to the evergreen provisions set forth in the 2021 Equity Incentive Plan.

For all restricted stock units (“RSUs”), the Company recorded stock-based compensation expense of $7.7 million and $16.3 million during the three and six months ended June 30, 2026, respectively, and $13.0 million and $27.8 million during the three and six months ended June 30, 2025, respectively.

A summary of the Company’s RSU activity for the six months ended June 30, 2026 is as follows (in thousands, except weighted average information):


	Number of Shares	Weighted Average Grant Date Fair Value Per Share
Unvested at December 31, 2025	6,557	$	9.23
Granted	3,387	1.80
Vested	(1,894)	9.09
Forfeited/Canceled	(936)	8.08
Unvested at June 30, 2026	7,114	$	5.88

As of June 30, 2026, total unrecognized stock-based compensation expense for unvested RSUs was $40.1 million, which is expected to be recognized over a weighted average period of 1.1 years.