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Note 10 - Net Loss Per Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to AXT, Inc. |  | $ | (1,906 | ) |  | $ | (2,937 | ) |  | $ | (17,712 | ) |  | $ | (6,536 | )
Less: Preferred stock dividends |  |  | (44 | ) |  |  | (44 | ) |  |  | (132 | ) |  |  | (132 | )
Net loss available to common stockholders |  | $ | (1,950 | ) |  | $ | (2,981 | ) |  | $ | (17,844 | ) |  | $ | (6,668 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic net loss per share - weighted-average common shares |  |  | 43,842 |  |  |  | 43,157 |  |  |  | 43,701 |  |  |  | 43,079 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock options |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Restricted stock awards |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Denominator for dilutive net loss per common shares |  |  | 43,842 |  |  |  | 43,157 |  |  |  | 43,701 |  |  |  | 43,079 |
Net loss attributable to AXT, Inc. per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.04 | ) |  | $ | (0.07 | ) |  | $ | (0.41 | ) |  | $ | (0.15 | )
Diluted |  | $ | (0.04 | ) |  | $ | (0.07 | ) |  | $ | (0.41 | ) |  | $ | (0.15 | )
Options excluded from diluted net loss per share as the impact is anti-dilutive |  |  | 1,133 |  |  |  | 1,186 |  |  |  | 1,133 |  |  |  | 1,186 |
Restricted stock excluded from diluted net loss per share as the impact is anti-dilutive |  |  | 2,325 |  |  |  | 1,518 |  |  |  | 2,325 |  |  |  | 1,518 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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