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Net Loss Per Share | 6 Months Ended
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Mar. 31, 2024
Earnings Per Share [Abstract] |
Net Loss Per Share | NET LOSS PER SHARE The following table presents the computation of basic and diluted net loss per share for the three and six months ended March 31, 2024 and 2023.
|  | Three Months Ended March 31, |  | Six Months Ended March 31,
|  | 2024 |  | 2023 |  | 2024 |  | 2023
|  | (in thousands, except per share amounts)
Numerator: |  |  |  |  |  |  |  |
Net (loss) income attributable to Arrowhead Pharmaceuticals, Inc. |  | $ | (125,300) |  |  | $ | 48,675 |  |  | $ | (258,164) |  |  | $ | 7,350 |
Denominator: |  |  |  |  |  |  |  |
Weighted-average basic shares outstanding |  | 123,285 |  |  | 106,757 |  |  | 115,307 |  |  | 106,394 |
Effect of dilutive securities |  | — |  |  | 1,386 |  |  | — |  |  | 1,499 |
Weighted-average diluted shares outstanding |  | 123,285 |  |  | 108,143 |  |  | 115,307 |  |  | 107,893 |
Basic net (loss) gain per share |  | $ | (1.02) |  |  | $ | 0.46 |  |  | $ | (2.24) |  |  | $ | 0.07 |
Diluted net (loss) gain per share |  | $ | (1.02) |  |  | $ | 0.45 |  |  | $ | (2.24) |  |  | $ | 0.07 |
The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to include them would be anti-dilutive.
|  | Three Months Ended March 31, |  | Six Months Ended March 31,
|  | 2024 |  | 2023 |  | 2024 |  | 2023
|  | (in thousands)
Options |  | 595 |  |  | 767 |  |  | 657 |  |  | 779 |
Restricted stock units |  | 3,411 |  |  | 3,583 |  |  | 3,931 |  |  | 3,290 |
Total |  | 4,006 |  |  | 4,350 |  |  | 4,588 |  |  | 4,069 |

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