| Summary of fair values of financial assets and financial liabilities |
| | | | | | | | | Financial Instruments as of 12/31/2025 | | FV Level 1 | | FV Level 2 | | FV Level 3 | | Total | Assets | | | | | | | | | - Debt securities at fair value through profit or loss | | 243,188,707 | | 6,317,794 | | — | | 249,506,501 | - Derivatives | | — | | 9,910,637 | | — | | 9,910,637 | - Other financial assets | | 44,370,988 | | — | | — | | 44,370,988 | - Other debt securities | | 63,225,729 | | 35,384,116 | | — | | 98,609,845 | - Investments in Equity Instruments | | 4,306,274 | | — | | 1,399,669 | | 5,705,943 | Total Assets | | 355,091,698 | | 51,612,547 | | 1,399,669 | | 408,103,914 | Liabilities | | | | | | | | | - Liabilities at fair value through profit or loss | | 693,909 | | — | | — | | 693,909 | - Other financial liabilities | | 271,671,634 | | — | | — | | 271,671,634 | Total Liabilities | | 272,365,543 | | — | | — | | 272,365,543 |
| | | | | | | | | Financial Instruments as of 12/31/2024 | | FV Level 1 | | FV Level 2 | | FV Level 3 | | Total | Assets | | | | | | | | | - Debt securities at fair value through profit or loss | | 337,225,295 | | 9,184,953 | | — | | 346,410,248 | - Derivatives | | — | | 6,087,827 | | — | | 6,087,827 | - Other financial assets | | 22,573,471 | | — | | — | | 22,573,471 | - Other debt securities | | 145,575,345 | | 128,242,424 | | — | | 273,817,769 | - Financial assets pledged as collateral | | 230,670,891 | | — | | — | | 230,670,891 | - Investments in Equity Instruments | | 68,878 | | — | | 866,079 | | 934,957 | Total Assets | | 736,113,880 | | 143,515,204 | | 866,079 | | 880,495,163 | Liabilities | | | | | | | | | - Derivatives | | — | | 2,281,117 | | — | | 2,281,117 | - Other financial liabilities | | 208,818,482 | | — | | — | | 208,818,482 | Total Liabilities | | 208,818,482 | | 2,281,117 | | — | | 211,099,599 |
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| Summary of difference between carrying amount and fair value of assets and liabilities |
| | | | | | | | | | | Other Financial Instruments as of 12/31/2025 | | Book value | | Fair value | | FV Level 1 | | FV Level 2 | | FV Level 3 | Financial Assets | | | | | | | | | | | - Cash and due from Banks | | 1,599,186,464 | | 1,599,186,464 | | 1,599,186,464 | | — | | — | - Other financial assets | | 13,162,141 | | 13,162,141 | | 13,162,141 | | — | | — | - Loans and other financing | | 3,765,478,226 | | 4,018,615,003 | | — | | — | | 4,018,615,003 | - Reverse Repo Transactions | | 3,657,016 | | 3,657,016 | | 3,657,016 | | — | | — | - Other Debt Securities | | 706,297,983 | | 715,560,730 | | 715,560,730 | | — | | — | - Financial assets Pledged as collateral | | 681,163,072 | | 680,687,200 | | 680,687,200 | | — | | — | | | 6,768,944,902 | | 7,030,868,554 | | 3,012,253,551 | | — | | 4,018,615,003 | Financial Liabilities | | | | | | | | | | | - Deposits | | 5,118,886,479 | | 5,136,751,125 | | — | | — | | 5,136,751,125 | - Other financial liabilities | | 8,600,651 | | 8,600,651 | | 8,600,651 | | — | | — | - Repo transactions | | 393,411,412 | | 393,411,412 | | 393,411,412 | | — | | — | - Financing received from the Central Bank and other financial institutions | | 480,793,742 | | 453,162,201 | | — | | — | | 453,162,201 | - Unsubordinated Debt securities | | 174,866,398 | | 176,412,406 | | 176,412,406 | | — | | — | | | 6,176,558,682 | | 6,168,337,795 | | 578,424,469 | | — | | 5,589,913,326 |
| | | | | | | | | | | Other Financial Instruments as of 12/31/2024 | | Book value | | Fair value | | FV Level 1 | | FV Level 2 | | FV Level 3 | Financial Assets | | | | | | | | | | | - Cash and due from Banks | | 858,981,662 | | 858,981,662 | | 858,981,662 | | — | | — | - Other financial assets | | 15,093,100 | | 15,093,100 | | 15,093,100 | | — | | — | - Loans and other financing | | 2,854,710,927 | | 3,132,630,423 | | — | | — | | 3,132,630,423 | - Other Debt Securities | | 795,536,505 | | 794,483,922 | | 792,734,227 | | 1,749,695 | | — | - Financial assets Pledged as collateral | | 2,447 | | 2,447 | | 2,447 | | — | | — | | | 4,524,324,641 | | 4,801,191,554 | | 1,666,811,436 | | 1,749,695 | | 3,132,630,423 | Financial Liabilities | | | | | | | | | | | - Deposits | | 4,174,648,931 | | 4,206,034,138 | | — | | — | | 4,206,034,138 | - Other financial liabilities | | 9,796,031 | | 9,796,031 | | 9,796,031 | | — | | — | - Financing received from the Central Bank and other financial institutions | | 51,695,858 | | 51,598,312 | | — | | — | | 51,598,312 | - Repo Transactions | | 44,677,369 | | 44,677,369 | | 44,677,369 | | — | | — | - Unsubordinated debt securities | | 67,297,539 | | 67,297,539 | | 67,297,539 | | — | | — | | | 4,348,115,728 | | 4,379,403,389 | | 121,770,939 | | — | | 4,257,632,450 |
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| Summary of equity instruments measured at fair value with changes in other comprehensive income |
| | | | | | | | | | | | | FV at | | Income / (Loss) | | | | | | FV at | Detail | | 12/31/2024 | | through OCI | | Disposals | | Additions | | 12/31/2025 | Mercado Abierto Electrónico S.A. | | 5,982 | | - | | (5,982) | | — | | — | Play Digital S.A. | | 148,670 | | (49,500) | | — | | — | | 99,170 | Seguro de Depósitos S.A | | 74,879 | | 51,955 | | — | | — | | 126,834 | Compensador Electrónica S.A. | | 599,364 | | 520,925 | | — | | 28,232 | | 1,148,521 | Provincanje S.A. | | 10,057 | | — | | (10,057) | | — | | — | Cuyo Aval Sociedad de Garantía Recíproca | | 20,038 | | (2,776) | | — | | — | | 17,262 | Argencontrol S.A. | | 3,339 | | (801) | | — | | — | | 2,538 | IEBA S.A. | | 80 | | (19) | | — | | — | | 61 | Other Reciprocal Guarantee Companies | | 3,670 | | (6,091) | | — | | 7,704 | | 5,283 | Total | | 866,079 | | 513,693 | | (16,039) | | 35,936 | | 1,399,669 |
| | | | | | | | | | | | | FV at | | Income / (Loss) | | | | | | FV at | Detail | | 12/31/2023 | | through OCI | | Disposals | | Additions | | 12/31/2024 | Mercado Abierto Electrónico S.A. | | 4,676 | | 1,306 | | — | | — | | 5,982 | Play Digital S.A. | | 487,312 | | (651,440) | | (200,910) | | 513,708 | | 148,670 | Seguro de Depósitos S.A | | 54,234 | | 20,645 | | — | | — | | 74,879 | Compensador Electrónica S.A. | | 318,857 | | 323,021 | | (45,141) | | 2,627 | | 599,364 | Provincanje S.A. | | 21,900 | | (11,843) | | — | | — | | 10,057 | Cuyo Aval Sociedad de Garantía Recíproca | | 16,182 | | 3,856 | | — | | — | | 20,038 | Argencontrol S.A. | | 1,664 | | 1,675 | | — | | — | | 3,339 | IEBA S.A. | | 175 | | (95) | | — | | — | | 80 | Other Reciprocal Guarantee Companies | | 2,781 | | 889 | | — | | — | | 3,670 | Total | | 907,781 | | (311,986) | | (246,051) | | 516,335 | | 866,079 |
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