Suzano (SUZ) reported Q4 net loss late Wednesday of 6.74 billion Brazilian reais ($1.17 billion), compared with a profit of 4.51 billion reais per share a year earlier.
Analysts polled by FactSet expected net income loss of $6.33 billion reais.
Net revenue for the quarter ended Dec. 31 was 14.18 billion reais, up from 10.37 billion reais a year earlier.
Analysts surveyed by FactSet expected $12.57 billion reais.