Cornerstone Bancorp Inc. reported earning results for the fourth quarter and full year ended December 31, 2020. For the quarter, net income increased 63.2% to $2.29 million, or $2.30 per diluted share, in the fourth quarter of 2020, compared to $1.40 million, or $1.47 per diluted share, in the fourth quarter of 2019. For 2020, net income increased 64.2% to $8.37 million, or $8.42 per diluted share, compared to $5.10 million, or $6.63 per diluted share, in 2019.