Components of share-based compensation expense are as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
(Unaudited, U.S. Dollars, in thousands)	2025		2024		2025		2024
Cost of sales	$	468	$	514	$	929	$	1,090
Sales, general, and administrative		6,915		8,883		12,564		16,098
Research and development		441		562		800		1,571
Total	$	7,824	$	9,959	$	14,293	$	18,759


	Three Months Ended June 30,				Six Months Ended June 30,
(Unaudited, U.S. Dollars, in thousands)	2025		2024		2025		2024
Stock options	$	1,594	$	1,382	$	2,463	$	2,500
Market-based stock options		592		499		1,238		826
Time-based restricted stock awards and units		3,528		6,254		6,522		12,127
Market-based / performance-based restricted stock units		1,650		1,303		3,070		2,141
Stock purchase plan		460		521		1,000		1,165
Total	$	7,824	$	9,959	$	14,293	$	18,759

During the three months ended June 30, 2025, and 2024, the Company issued 0.4 million and 0.6 million shares, respectively, of common stock related to stock purchase plan issuances, stock option exercises, and the vesting of restricted stock awards and units. During the six months ended June 30, 2025, and 2024, the Company issued 1.0 million and 0.9 million shares, respectively, of common stock related to stock purchase plan issuances, stock option exercises, and the vesting of restricted stock awards and units.