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Stock-Based Employee Benefit Plans (Tables) | 12 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Summary of Restricted Stock Unit and Market Stock Unit Activity | The following table summarizes the RSUs activity during fiscal 2025:
| Shares |  | Weighted-average Grant-date Fair Value
| (In thousands) |  |
Outstanding at September 30, 2024 | 305 |  |  | $ | 724.40 |
Granted | 56 |  |  | 2,119.14 |
Released | (128) |  |  | 647.91 |
Forfeited | (19) |  |  | 933.24 |
Outstanding at September 30, 2025 | 214 |  |  | $ | 1,114.47 |
The following table summarizes the MSUs activity during fiscal 2025:
| Shares |  | Weighted- average Grant-date Fair Value
| (In thousands) |  |
Outstanding at September 30, 2024 | 62 |  |  | $ | 1,161.62 |
Granted | 32 |  |  | 1,596.70 |
Released | (46) |  |  | 978.49 |
Forfeited | (3) |  |  | 1,846.85 |
Outstanding at September 30, 2025 | 45 |  |  | $ | 1,611.35 |
Summary of Performance Stock Unit Activity | The following table summarizes the PSUs activity during fiscal 2025:
| Shares |  | Weighted- average Grant-date Fair Value
| (In thousands) |  |
Outstanding at September 30, 2024 | 85 |  |  | $ | 786.85 |
Granted | 14 |  |  | 2,227.11 |
Released | (46) |  |  | 665.22 |
Forfeited | (7) |  |  | 1,161.69 |
Outstanding at September 30, 2025 | 46 |  |  | $ | 1,283.09 |
Summary of Assumptions Used to Estimate Fair Value of Market Stock Units | We used the following assumptions to estimate the fair value of our MSUs during fiscal 2025, 2024 and 2023:
| Year Ended September 30,
| 2025 |  |  | 2024 |  |  | 2023 |
Expected volatility in FICO’s stock price | 36.2 |  | % |  | 36.3 |  | % |  | 47.3 |  | %
Expected volatility in Russell 3000 Index | N/A |  |  | 18.2 |  | % |  | 26.0 |  | %
Expected volatility in S&P 500 Index (peer average) | 30.9 |  | % |  | N/A |  |  | N/A |
Correlation between FICO and the Russell 3000 Index | N/A |  |  | 60.3 |  | % |  | 73.5 |  | %
Correlation between FICO and the S&P 500 Index | 30.3 |  | % |  | N/A |  |  | N/A |
Risk-free interest rate | 4.09 |  | % |  | 4.39 |  | % |  | 4.02 |  | %
Average expected dividend yield | — |  | % |  | — |  | % |  | — |  | %
Summary of Assumptions Used to Estimate Fair Value of Stock Options | We used the following assumptions to estimate the fair value of our stock options during fiscal 2025, 2024 and 2023:
| Year Ended September 30,
| 2025 |  | 2024 |  | 2023
Stock Options: |  |  |  |  |  |  |  |  |  |  |
Weighted-average expected term (years) |  |  | 4.40 |  |  |  | 4.46 |  |  |  | 5.23
Expected volatility (range) | 34.6 |  | - | 36.5 | % |  | 33.6 |  | - | 33.9 | % |  | 33.4 |  | - | 35.5 | %
Weighted-average volatility |  |  | 35.0 | % |  |  |  | 33.7 | % |  |  |  | 33.5 | %
Risk-free interest rate (range) | 3.89 |  | - | 4.08 | % |  | 4.18 |  | - | 4.30 | % |  | 3.40 |  | - | 4.49 | %
Weighted-average expected dividend yield |  |  | — | % |  |  |  | — | % |  |  |  | — | %
Summary of Option Activity | The following table summarizes option activity during fiscal 2025:
| Shares |  | Weighted- average Exercise Price |  | Weighted- average Remaining Contractual Term |  | Aggregate Intrinsic Value
| (In thousands) |  |  |  | (In years) |  | (In thousands)
Outstanding at September 30, 2024 | 189 |  |  | $ | 479.26 |  |  |  |  |
Granted | 5 |  |  | 2,014.89 |  |  |  |  |
Exercised | (65) |  |  | 224.16 |  |  |  |  |
Outstanding at September 30, 2025 | 129 |  |  | $ | 670.08 |  |  | 3.43 |  | $ | 109,164 |
Exercisable at September 30, 2025 | 65 |  |  | $ | 457.59 |  |  | 2.11 |  | $ | 67,464 |
Vested or expected to vest at September 30, 2025 | 127 |  |  | $ | 664.36 |  |  | 3.41 |  | $ | 108,192 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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