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SHAREHOLDERS' EQUITY - Share capital (Details) R$ / shares in Units, R$ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 06, 2020 $ / shares | Oct. 06, 2020 BRL (R$) R$ / shares shares | Dec. 31, 2020 BRL (R$) R$ / shares shares | Dec. 31, 2019 R$ / shares
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 1,361,263,584 |
Percentage of ordinary shares |  |  | 100.00% |
Maximum authorized increase in number of common shares |  |  | 780,119,712 |
SUZB3 common shares quoted (per share) | R$ / shares |  |  | R$ 58.54 | R$ 39.68
Secondary public offering | American Depositary Shares |  |  |  |
Share Capital |  |  |  |
Number of new shares issued |  | 13,180,000 |  |
Price per security | $ / shares | $ 8.15 |  |  |
Controlling Shareholders |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 622,977,034 |
Percentage of ordinary shares |  |  | 45.77% |
Suzano Holding S.A. |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 367,612,329 |
Percentage of ordinary shares |  |  | 27.01% |
Controller |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 194,809,797 |
Percentage of ordinary shares |  |  | 14.31% |
Managements |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 34,400,167 |
Percentage of ordinary shares |  |  | 2.53% |
Alden Fundo de Investimento em Aes |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 26,154,741 |
Percentage of ordinary shares |  |  | 1.92% |
Votorantim S.A. |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 50,180,059 |
Percentage of ordinary shares |  |  | 3.69% |
Other shareholders |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 676,064,487 |
Percentage of ordinary shares |  |  | 49.66% |
BNDESPAR | Secondary public offering |  |  |  |
Share Capital |  |  |  |
Number of new shares issued |  | 150,217,425 |  |
Price per security | R$ / shares |  | R$ 46.00 |  |
Aggregate value of new securities issued | R$ |  | R$ 6,910,002 |  |
Share Capital |  |  |  |
Share Capital |  |  |  |
Share capital | R$ |  |  | R$ 9,269,281 |
Quantity of ordinary shares |  |  | 1,361,263,584 |
Share issue related cost | R$ |  |  | R$ 33,735 |
Treasury shares |  |  |  |
Share Capital |  |  |  |
Quantity of ordinary shares |  |  | 12,042,004 |
Percentage of ordinary shares |  |  | 0.88% |

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