Note 8 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2026

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, 2025		$	3,532			$	55			$	339,922			$	(64,924	)		$	(5,295	)		$	273,290			$	23,285			$	296,575
Common stock options exercised			—				1				1,477				—				—				1,478				—				1,478
Stock-based compensation			—				—				1,035				—				—				1,035				—				1,035
Net loss			—				—				—				(1,620	)			—				(1,620	)			148				(1,472	)
Other comprehensive loss			—				—				—				—				691				691				143				834
Balance as of March 31, 2026			3,532				56				342,434				(66,544	)			(4,604	)			274,874				23,576				298,450
Common stock options exercised			—				—				489				—				—				489				—				489
Stock-based compensation			—				—				762				—				—				762				—				762
Issuance of common stock, net of issuance costs of $32,417			—				10				600,073				—				—				600,083				—				600,083
Net income			—				—				—				11,128				—				11,128				1,093				12,221
Other comprehensive loss			—				—				—				—				(62	)			(62	)			170				108
Balance as of June 30, 2026			3,532				66				943,758				(55,416	)			(4,666	)			887,274				24,839				912,113

																		*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 income			—				—				—				—				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 income			—				—				—				—				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