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Note 13 - Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
|  | Actual |  |  | For Capital Adequacy Purposes |  |  | To Be Well Capitalized Under Prompt Corrective Action Provisions |
|  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
As of December 31, 2025: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET I Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 1,838,024 |  |  |  | 11.65 | % |  | $ | 709,755 |  |  |  | 4.50 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,866,335 |  |  |  | 11.83 | % |  |  | 709,698 |  |  |  | 4.50 | % |  | $ | 1,025,119 |  |  |  | 6.50 | %
Tier I Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 1,838,524 |  |  |  | 11.66 | % |  |  | 946,340 |  |  |  | 6.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,866,835 |  |  |  | 11.84 | % |  |  | 946,264 |  |  |  | 6.00 | % |  |  | 1,261,685 |  |  |  | 8.00 | %
Total Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 2,038,579 |  |  |  | 12.93 | % |  |  | 1,261,787 |  |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 2,039,090 |  |  |  | 12.93 | % |  |  | 1,261,685 |  |  |  | 8.00 | % |  |  | 1,577,107 |  |  |  | 10.00 | %
Tier I Capital to Average Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 1,838,524 |  |  |  | 10.26 | % |  |  | 717,027 |  |  |  | 4.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,866,835 |  |  |  | 10.41 | % |  |  | 716,995 |  |  |  | 4.00 | % |  |  | 896,244 |  |  |  | 5.00 | %
As of December 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET I Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  | $ | 1,634,837 |  |  |  | 11.42 | % |  | $ | 644,441 |  |  |  | 4.50 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,694,412 |  |  |  | 11.83 | % |  |  | 644,402 |  |  |  | 4.50 | % |  | $ | 930,803 |  |  |  | 6.50 | %
Tier I Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 1,635,337 |  |  |  | 11.42 | % |  |  | 859,255 |  |  |  | 6.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,694,912 |  |  |  | 11.84 | % |  |  | 859,203 |  |  |  | 6.00 | % |  |  | 1,145,604 |  |  |  | 8.00 | %
Total Capital to Risk Weighted Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 1,847,146 |  |  |  | 12.90 | % |  |  | 1,145,673 |  |  |  | 8.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,859,978 |  |  |  | 12.99 | % |  |  | 1,145,604 |  |  |  | 8.00 | % |  |  | 1,432,005 |  |  |  | 10.00 | %
Tier I Capital to Average Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated |  |  | 1,635,337 |  |  |  | 9.59 | % |  |  | 682,238 |  |  |  | 4.00 | % |  |  | N/A |  |  |  | N/A |
ServisFirst Bank |  |  | 1,694,912 |  |  |  | 9.94 | % |  |  | 682,223 |  |  |  | 4.00 | % |  |  | 852,779 |  |  |  | 5.00 | %

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