 HAMILTON, Bermuda--BUSINESS WIRE--The Bank of N.T. Butterfield Son Limited Butterfield or the Bank BSX: NTB.BH; NYSE: NTB today announced financial results for the fourth quarter and year ended December 31, 2020. Net income for the year ended December 31, 2020 was 147.2 million, or 2.90 per diluted common share, compared to 177.1 million, or 3.30 per diluted common share, for the year ended December 31, 2019. Core net income1 for the year ended December 31, 2020 was 154.5 m 