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Loss Per Share | 3 Months Ended
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Mar. 31, 2024
Earnings Per Share [Abstract] |
Loss Per Share | 15. LOSS PER SHARE The calculation of basic and diluted loss per share is as follows:
|  | Three Months Ended |
|  | March 31, |
(In thousands, except per share amounts) |  | 2024 |  |  | 2023 |
Numerator |  |  |  |  |  |
Net loss attributable to ADTRAN Holdings, Inc. |  | $ | (324,550 | ) |  | $ | (40,083 | )
Denominator |  |  |  |  |  |
Weighted average number of shares – basic |  |  | 78,814 |  |  |  | 78,358 |
Effect of dilutive securities |  |  |  |  |  |
Stock options |  |  | — |  |  |  | — |
PSUs, RSUs and restricted stock |  |  | — |  |  |  | — |
Weighted average number of shares – diluted |  |  | 78,814 |  |  |  | 78,358 |
Loss per share attributable to ADTRAN Holdings, Inc. – basic |  | $ | (4.12 | ) |  | $ | (0.51 | )
Loss per share attributable to ADTRAN Holdings, Inc. – diluted |  | $ | (4.12 | ) |  | $ | (0.51 | )
For the three months ended March 31, 2024 and 2023, 1.1 million and 0.1 million shares, respectively, of unvested PSUs, RSUs and restricted stock were excluded from the calculation of diluted earnings per share due to their anti-dilutive effect. For the three months ended March 31, 2024 and 2023, 3.5 million and 0.4 million stock options, respectively, were outstanding but were not included in the computation of diluted earnings per share. These stock options were excluded because their exercise prices were greater than the average market price of the common shares during the applicable period, making them anti-dilutive under the treasury stock method.

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