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Income (expenses) by nature | 9 Months Ended
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Sep. 30, 2025
Analysis of income and expense [abstract] |
Disclosure of expenses by nature [text block] | 29 INCOME (EXPENSES) BY NATURE
|  | 09/30/2025 |  | 09/30/2024
Cost of sales (1) |  |  |  |
Personnel expenses |  | (1,655,870) |  |  | (1,158,918) |
Costs of raw materials, materials and services |  | (10,193,836) |  |  | (7,942,922) |
Logistics cost |  | (4,583,146) |  |  | (3,511,014) |
Depreciation, depletion and amortization |  | (7,410,834) |  |  | (5,592,701) |
Other |  | (947,366) |  |  | (435,255) |
|  | (24,791,052) |  |  | (18,640,810) |
Selling expenses |  |  |  |
Personnel expenses |  | (281,771) |  |  | (236,663) |
Services |  | (184,625) |  |  | (165,567) |
Logistics cost |  | (1,077,476) |  |  | (890,229) |
Depreciation and amortization |  | (727,420) |  |  | (717,720) |
Other (2) |  | (171,801) |  |  | (71,608) |
|  | (2,443,093) |  |  | (2,081,787) |
General and administrative expenses |  |  |  |
Personnel expenses |  | (1,217,486) |  |  | (986,136) |
Services |  | (406,502) |  |  | (341,444) |
Depreciation and amortization |  | (95,173) |  |  | (105,344) |
Other (3) |  | (266,809) |  |  | (196,676) |
|  | (1,985,970) |  |  | (1,629,600) |
Other operating (expenses) income, net |  |  |  |
Results from sales of other products, net |  | 85,309 |  |  | 70,764 |
Results from sales and disposals of property, plant and equipment, intangible and biological assets, net |  | (272,228) |  |  | (132,693) |
Result on fair value adjustment of biological assets |  | (73,248) |  |  | 539,003 |
Depreciation, amortization and other PPA realizations (4) |  | 7,210 |  |  | 1,719 |
Provision for judicial liabilities |  | (155,276) |  |  | (113,173) |
Other operating income (expenses), net |  | (1,549) |  |  | 50,406 |
|  | (409,782) |  |  | 416,026 |
(1)Includes R$485,199 related to maintenance downtime costing (R$320,212 as at September 30, 2024). (2)Includes expected credit losses, insurance, materials for use and consumption, travel, accommodation, trade fairs and events. (3)Includes, substantially corporate expenses, insurance, materials for use and consumption, social programs and donations, travel and accommodation. (4)Refers, substantially, to the write-off of contingent liabilities assumed in Fibria's PPA as disclosed in note 20.1.

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