Stockholders' Equity (Tables)

9 Months Ended

Sep. 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
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 loss		—		—		—		—		(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
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 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
Common stock options exercised		—		1		2		—		—		3		—		3
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		(14)		—		—		(14)		7		(7)
Stock-based compensation		—		—		723		—		—		723		—		723
Tongmei stock-based compensation		—		—		97		—		—		97		—		97
Net loss		—		—		—		(2,937)		—		(2,937)		190		(2,747)
Other comprehensive income		—		—		—		—		3,189		3,189		372		3,561
Balance as of September 30, 2024	$	3,532	$	45	$	240,770	$	(38,576)	$	(5,038)	$	200,733	$	24,249	$	224,982

									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
Common stock options exercised		—		—		—		—		—		—		—		—
Investment in subsidiary with noncontrolling interest		—		—		(43)		—		—		(43)		242		199
Investment in subsidiary with redeemable noncontrolling interest		—		—		(44)						(44)		—		(44)
Noncontrolling interest portion of Tongmei stock-based compensation		—		—		(139)		—		—		(139)		68		(71)
Stock-based compensation		—		—		703		—		—		703		—		703
Tongmei stock-based compensation		—		—		188		—		—		188		—		188
Net loss		—		—		—		(5,823)		—		(5,823)		(236)		(6,059)
Other comprehensive income (loss)		—		—		—		—		(406)		(406)		(54)		(460)
Balance as of September 30, 2023	$	3,532	$	44	$	237,653	$	(28,419)	$	(8,581)	$	204,229	$	23,218	$	227,447