| Summary of guarantees granted |
| | | | | | | | | | | | | | | | | | | | | Original | | | | | | | | | Related Party | | Relationship | | Object | | Amount | | Maturity | | 2025 | | 2024 | | 2023 | Gerdau Aços Longos S.A. | | Subsidiary | | Financing Agreements | | 150,000 | | apr/24 | | — | | — | | 150,000 | Gerdau Açominas S.A. | | Subsidiary | | Financing Agreements | | 400,000 | | nov/24 | | — | | — | | 400,000 | Gerdau Açominas S.A. | | Subsidiary | | Financing Agreements | | 375,000 | | may/25 | | — | | — | | 375,000 | Gerdau Aços Longos S.A. | | Subsidiary | | Financing Agreements | | 375,000 | | may/25 | | — | | — | | 375,000 | Gerdau Aços Longos S.A. | | Subsidiary | | Financing Agreements | | 836 | | jan/25 | | — | | 760 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 10,949 | | jan/25 | | — | | 10,701 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 1,868 | | jan/25 | | — | | 1,825 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 3,096 | | jan/25 | | — | | 3,025 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 4,043 | | jan/25 | | — | | 3,951 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 624 | | jan/25 | | — | | 610 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 3,229 | | jan/25 | | — | | 3,156 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 4,873 | | jan/25 | | — | | 4,762 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 4,992 | | jan/25 | | — | | 9,576 | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 14,483 | | feb/25 | | — | | 2,608 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 2,467 | | feb/25 | | — | | 2,396 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 59,644 | | mar/25 | | — | | 44,519 | | 63,024 | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 35,451 | | mar/25 | | — | | 25,042 | | 35,451 | Gerdau Aços Longos S.A. | | Subsidiary | | Financing Agreements | | 400,000 | | nov/25 | | — | | 400,000 | | 400,000 | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 3,235 | | jan/26 | | 3,497 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 2,492 | | jan/26 | | 2,694 | | — | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 1,372 | | jan/26 | | 1,484 | | — | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 10,670 | | jan/26 | | 11,536 | | — | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 2,004 | | jan/26 | | 2,167 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 312 | | jan/26 | | 337 | | — | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 551 | | jan/26 | | 563 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 7,109 | | jan/26 | | 7,686 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 9,432 | | jan/26 | | 10,198 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 2,594 | | jan/26 | | 2,805 | | — | | — | Gerdau Aços Longos S.A. | | Subsidiary | | Commercial Contract | | 446 | | feb/26 | | 483 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 2,052 | | mar/26 | | 2,219 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 993 | | mar/26 | | 1,073 | | — | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 11,951 | | jan/27 | | 11,680 | | 11,680 | | — | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 69,156 | | may/27 | | 390,000 | | — | | — | Gerdau Trade Inc. | | Subsidiary | | Financing Agreements | | 2,056,535 | | oct/27 | | 988,391 | | 2,641,096 | | 2,064,877 | Gerdau Corsa S.A.P.I. de C.V. | | Joint Venture | | Financing Agreements | | 601,588 | | jun/28 | | 243,023 | | 610,245 | | 648,322 | GUSAP III LP. | | Subsidiary | | Financing Agreements | | 2,100,600 | | jan/30 | | — | | 3,083,765 | | 2,410,967 | Gerdau Aços Longos S.A. and Gerdau Açominas S.A. | | Subsidiaries | | Commercial Contract | | 75,854 | | dec/34 | | 81,723 | | — | | — | UFV Barro Alto V Geração de Energia SPE Ltda | | Subsidiary | | Financing Agreements | | 100,496 | | mar/35 | | 100,496 | | — | | — | UFV Barro Alto VI Geração de Energia SPE Ltda | | Subsidiary | | Financing Agreements | | 100,496 | | mar/35 | | 100,413 | | — | | — | UFV Barro Alto VII Geração de Energia SPE Ltda | | Subsidiary | | Financing Agreements | | 100,496 | | mar/35 | | 100,580 | | — | | — | Gerdau Trade Inc. | | Subsidiary | | Financing Agreements | | 3,547,115 | | jun/35 | | 3,576,560 | | — | | — | Gerdau Ameristeel US Inc. | | Subsidiary | | Financing Agreements | | 103,505 | | oct/37 | | 280,622 | | 315,807 | | 246,906 | Gerdau Aços Longos S.A. | | Subsidiary | | Financing Agreements | | 12,834 | | jun/38 | | 8,967 | | 12,216 | | 12,216 | Gerdau Açominas S.A. | | Subsidiary | | Financing Agreements | | 335,000 | | oct/41 | | 217,118 | | — | | — | GUSAP III LP. | | Subsidiary | | Financing Agreements | | 1,117,100 | | apr/44 | | 2,646,891 | | 2,978,763 | | 2,328,873 |
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| Schedule of changes in Restricted and Performance Shares with key management |
| | | | | | | | | 2025 | | 2024 | | 2023 | Cost of Salaries, variable compensation and benefits | | 37,422 | | 40,396 | | 36,964 | Cost of contributions to management’s defined contribution pension plans | | 2,017 | | 1,952 | | 1,986 | Cost of long-term incentive plans | | 30,014 | | 32,098 | | 25,352 | | | 69,453 | | 74,446 | | 64,302 | | | | | | | | Cost of social charges | | 15,344 | | 16,361 | | 17,077 |
| | | | | | | | | 2025 | | 2024 | | 2023 | Available at beginning of the year | | 4,073,931 | | 4,945,852 | | 3,415,166 | Granted | | 1,091,796 | | 1,410,887 | | 2,705,702 | Exercised | | (803,483) | | (2,751,812) | | (938,953) | Cancelled | | — | | (321,345) | | (404,922) | Share Bonus | | — | | 790,349 | | 168,859 | Base Adjustment | | (64,382) | | — | | — | Available at the end of the year | | 4,297,862 | | 4,073,931 | | 4,945,852 |
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