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Quarterly Results Quarterly Results Show all 2020 Q4 GBT Q4 2020 Financial Results Conference Call GBT Reports Recent Business Progress and Fourth Quarter and Full Year 2020 Financial Results Form 10-K Q3 GBT Reports Recent Business Progress and Third Quarter 2020 Financial Results Form 10-Q Q2 GBT Reports Recent Business Progress and Second Quarter 2020 Financial Results Form 10-Q Q1 GBT Reports Recent Business Progress and First Quarter 2020 Financial Results Form 10-Q 2019 Q4 GBT Reports Recent Business Progress and Fourth Quarter and Full Year 2019 Financial Results Form 10-K