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Note 8 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

																		*Accumulated*
										*Additional*								*Other*				*AXT, Inc.*								*Total*
		*Preferred*				*Common*				*Paid-In*				*Accumulated*				*Comprehensive*				*Stockholders’*				*Noncontrolling*				*Stockholders’*
		*Stock*				*Stock*				*Capital*				*Deficit*				*Income (Loss)*				*Equity*				*Interests*				*Equity*
Balance as of December 31, 2024		$	3,532			$	45			$	241,514			$	(43,664	)		$	(8,657	)		$	192,770			$	23,561			$	216,331
Stock-based compensation			—				—				563				—				—				563				—				563
Tongmei stock-based compensation			—				1				70				—				—				71				6				77
Net loss			—				—				—				(8,798	)			—				(8,798	)			(610	)			(9,408	)
Other comprehensive loss			—				—				—				—				431				431				53				484
Balance as of March 31, 2025			3,532				46				242,147				(52,462	)			(8,226	)			185,037				23,010				208,047
Stock-based compensation			—				—				607				—				—				607				—				607
Tongmei stock-based compensation			—				—				22				—				—				22				2				24
Net loss			—				—				—				(7,008	)			—				(7,008	)			(233	)			(7,241	)
Other comprehensive loss			—				—				—				—				1,056				1,056				128				1,184
Balance as of June 30, 2025			3,532				46				242,776				(59,470	)			(7,170	)			179,714				22,907				202,621
Common stock options exercised			—				—				96				—				—				96				—				96
Stock-based compensation			—				—				708				—				—				708				—				708
Tongmei stock-based compensation			—				—				26				—				—				26				2				28
Net loss			—				—				—				(1,906	)			—				(1,906	)			223				(1,683	)
Other comprehensive loss			—				—				—				—				510				510				65				575
Balance as of September 30, 2025		$	3,532			$	46			$	243,606			$	(61,376	)		$	(6,660	)		$	179,148			$	23,197			$	202,345

																		*Accumulated*
										*Additional*								*Other*				*AXT, Inc.*								*Total*
		*Preferred*				*Common*				*Paid-In*				*Accumulated*				*Comprehensive*				*Stockholders’*				*Noncontrolling*				*Stockholders’*
		*Stock*				*Stock*				*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
Stock-based compensation			—				—				614				—				—				614				—				614
Tongmei stock-based compensation			—				—				171				—				—				171				13				184
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
Stock-based compensation			—				—				621				—				—				621				—				621
Tongmei stock-based compensation			—				—				79				—				—				79				7				86
Net loss			—				—				—				(1,516	)			—				(1,516	)			316				(1,200	)
Other comprehensive income			—				—				—				—				(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
Stock-based compensation			—				—				709				—				—				723				—				723
Tongmei stock-based compensation			—				—				97				—				—				83				7				90
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