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Regulatory Matters | 9 Months Ended
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Sep. 30, 2025
Banking Regulation, Global Systemically Important Bank (GSIB) Surcharge [Abstract] |
Regulatory Matters | Regulatory Matters The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1, and common equity Tier 1 capital to risk-weighted assets, and of Tier 1 capital to average assets. The following tables present actual and required capital ratios as of September 30, 2025 and December 31, 2024 for the Company and the Bank under applicable Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of September 30, 2025 and December 31, 2024 based on the then phased-in provisions of the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules.
| Actual |  | Required for Capital Adequacy Purposes |  | Required to be Considered Well Capitalized
As of September 30, 2025: | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
| (dollars in thousands)
Total Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,240,959 |  |  | 15.11 | % |  | $ | 862,402 |  |  | 10.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,233,469 |  |  | 15.02 | % |  | $ | 862,260 |  |  | 10.50 | % |  | $ | 821,200 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,137,918 |  |  | 13.85 | % |  | $ | 698,135 |  |  | 8.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,130,460 |  |  | 13.77 | % |  | $ | 698,020 |  |  | 8.50 | % |  | $ | 656,960 |  |  | 8.00 | %
Common equity Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,097,918 |  |  | 13.37 | % |  | $ | 574,935 |  |  | 7.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,130,460 |  |  | 13.77 | % |  | $ | 574,840 |  |  | 7.00 | % |  | $ | 533,780 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,137,918 |  |  | 11.71 | % |  | $ | 388,850 |  |  | 4.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,130,460 |  |  | 11.63 | % |  | $ | 388,755 |  |  | 4.00 | % |  | $ | 485,943 |  |  | 5.00 | %
| Actual |  |  |  | Required for Capital Adequacy Purposes |  | Required to be Considered Well Capitalized
As of December 31, 2024: | Amount |  | Ratio |  |  |  |  |  | Amount |  | Ratio |  | Amount |  | Ratio
| (dollars in thousands)
Total Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,258,218 |  |  | 15.71 | % |  |  |  |  |  | $ | 840,943 |  |  | 10.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,248,802 |  |  | 15.60 | % |  |  |  |  |  | $ | 840,740 |  |  | 10.50 | % |  | $ | 800,704 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,118,292 |  |  | 13.96 | % |  |  |  |  |  | $ | 680,763 |  |  | 8.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,148,328 |  |  | 14.34 | % |  |  |  |  |  | $ | 680,599 |  |  | 8.50 | % |  | $ | 640,563 |  |  | 8.00 | %
Common equity Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,060,690 |  |  | 13.24 | % |  |  |  |  |  | $ | 560,628 |  |  | 7.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,148,328 |  |  | 14.34 | % |  |  |  |  |  | $ | 560,493 |  |  | 7.00 | % |  | $ | 520,458 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,118,292 |  |  | 11.70 | % |  |  |  |  |  | $ | 382,214 |  |  | 4.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,148,328 |  |  | 12.02 | % |  |  |  |  |  | $ | 382,096 |  |  | 4.00 | % |  | $ | 477,620 |  |  | 5.00 | %
As of September 30, 2025 and December 31, 2024, capital levels at the Company and the Bank exceed all capital adequacy requirements under the Basel III Capital Rules. Also, at September 30, 2025 and December 31, 2024, the Bank’s capital levels exceeded the minimum amounts necessary to be considered well capitalized under the current regulatory framework for prompt corrective action. The Basel III Capital Rules require all banking organizations to maintain a capital conservation buffer above the minimum risk-based capital requirements in order to avoid certain limitations on capital distributions, stock repurchases and discretionary bonus payments to executive officers. The capital conservation buffer is exclusively composed of common equity tier 1 capital, and it applies to each of the risk-based capital ratios but not the leverage ratio. At September 30, 2025, the Company and the Bank are in compliance with the capital conservation buffer requirement.

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- Definition The entire disclosure for regulatory capital requirement for depository and lending institutions. Institutions include, but not are not limited to, finance company, insured depository institution, bank holding company, savings and loan association holding company, bank and savings institution not federally insured, mortgage company, foreign financial institution and credit union. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1D Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1F + Details
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