Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2024

Stockholders' Equity

Consolidated statements of stockholders' equity

									Accumulated
									Other		AXT, Inc.				Total
	Preferred		Common		Additional		Accumulated		Comprehensive		Stockholders’		Noncontrolling		Stockholders’
	Stock		Stock		Paid-In Capital		Deficit		Income (Loss)		Equity		Interests		Equity
Balance as of December 31, 2023	$	3,532	$	44	$	238,452	$	(32,040)	$	(5,999)	$	203,989	$	23,494	$	227,483
Common stock options exercised		—		—		20		—		—		20		—		20
Investment in subsidiary with noncontrolling interest		—		—		—		—		—		—		—		—
Investment in subsidiary with redeemable noncontrolling interest		—		—		—		—		—		—		—		—
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		(24)		—		—		(24)		13		(11)
Stock-based compensation		—		—		614		—		—		614		—		614
Tongmei stock-based compensation		—		—		195		—		—		195		—		195
Net loss		—		—		—		(2,083)		—		(2,083)		106		(1,977)
Other comprehensive income		—		—		—		—		(1,627)		(1,627)		(187)		(1,814)
Balance as of March 31, 2024	$	3,532	$	44	$	239,257	$	(34,123)	$	(7,626)	$	201,084	$	23,426	$	224,510
Common stock options exercised		—		—		5		—		—		5		—		5
Investment in subsidiary with noncontrolling interest		—		—		—		—		—		—				—
Investment in subsidiary with redeemable noncontrolling interest		—		—		—		—		—		—		—		—
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		(15)		—		—		(15)		7		(8)
Stock-based compensation		—		—		621		—		—		621		—		621
Tongmei stock-based compensation		—		—		94		—		—		94		—		94
Net loss		—		—		—		(1,516)		—		(1,516)		316		(1,200)
Other comprehensive income (loss)		—		—		—		—		(601)		(601)		(69)		(670)
Balance as of June 30, 2024	$	3,532	$	44	$	239,962	$	(35,639)	$	(8,227)	$	199,672	$	23,680	$	223,352

									Accumulated
									Other		AXT, Inc.				Total
	Preferred		Common		Additional		Accumulated		Comprehensive		Stockholders’		Noncontrolling		Stockholders’
	Stock		Stock		Paid-In Capital		Deficit		Income (Loss)		Equity		Interests		Equity
Balance as of December 31, 2022	$	3,532	$	44	$	235,308	$	(14,159)	$	(3,118)	$	221,607	$	23,293	$	244,900
Common stock options exercised		—		—		8		—		—		8		—		8
Investment in subsidiary with noncontrolling interest		—		—		(36)		—		—		(36)		239		203
Investment in subsidiary with redeemable noncontrolling interest		—		—		(36)		—		—		(36)		—		(36)
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		33		—		—		33		(16)		17
Stock-based compensation		—		—		717		—		—		717		—		717
Tongmei stock-based compensation		—		—		198		—		—		198		—		198
Net loss		—		—		—		(3,348)		—		(3,348)		(169)		(3,517)
Other comprehensive income		—		—		—		—		858		858		70		928
Balance as of March 31, 2023	$	3,532	$	44	$	236,192	$	(17,507)	$	(2,260)	$	220,001	$	23,417	$	243,418
Common stock options exercised		—		—		2		—		—		2		—		2
Investment in subsidiary with noncontrolling interest		—		—		(74)		—		—		(74)		380		306
Investment in subsidiary with redeemable noncontrolling interest		—		—		(75)		—		—		(75)		—		(75)
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		31		—		—		31		(14)		17
Stock-based compensation		—		—		720		—		—		720		—		720
Tongmei stock-based compensation		—		—		192		—		—		192		—		192
Net income (loss)		—		—		—		(5,089)		—		(5,089)		38		(5,051)
Other comprehensive income (loss)		—		—		—		—		(5,915)		(5,915)		(623)		(6,538)
Balance as of June 30, 2023	$	3,532	$	44	$	236,988	$	(22,596)	$	(8,175)	$	209,793	$	23,198	$	232,991