Stock-based compensation expense, net of forfeitures and adjustments of $0.1 million and $(0.4) million for the three months ended June 30, 2025 and 2024, respectively, and $0.2 million and $0.2 million for the six months ended June 30, 2025 and 2024, respectively, was as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2025		2024		2025		2024
Cost of sales	$	354	$	275	$	644	$	448
General and administrative	6,119		4,929		11,783		8,256
Sales and marketing	354		293		680		558
Research and development	1,060		789		1,961		1,434
Total	$	7,887	$	6,286	$	15,068	$	10,696

At June 30, 2025, the aggregate unrecognized compensation expense related to unvested equity awards was $59.6 million, which is expected to be recognized as compensation expense in fiscal years 2025 through 2028.

A summary of stock option activity for the six months ended June 30, 2025 is below:


(in thousands, except for weighted average exercise price)	Options outstanding	Weighted average exercise price
Outstanding at January 1, 2025	714	$	13.36

Exercised	(19)	16.23
Canceled/forfeited	(1)	24.87
Outstanding at June 30, 2025	694	$	13.28

A summary of unvested restricted stock units activity for the six months ended June 30, 2025 is below:


(in thousands, except for weighted average award value)	Restricted Stock Unit Awards	Weighted average award value
Outstanding at January 1, 2025	1,122	$	47.21
Granted	507	69.24
Vested	(447)	42.32
Canceled/forfeited	(46)	49.28
Outstanding at June 30, 2025	1,136	$	60.28

A total of 330,000 shares of Company common stock were made available for purchase under the Company's 2021 Employee Stock Purchase Plan ("ESPP"), subject to adjustment as provided for in the ESPP. As of June 30, 2025, 39,596 shares of common stock were purchased under the ESPP since inception, including 11,273 shares purchased under the ESPP during the three months ended June 30, 2025.