The Company uses certain non-GAAP financial measures to provide meaningful supplemental information regarding the Company’s operational performance and to enhance investors’ overall understanding of such financial performance. These non-GAAP financial measures should not be considered a substitute for financial measures presented in accordance with GAAP and may be different from non-GAAP financial measures used by other companies. The table below presents reconciliations of certain GAAP to non-GAAP financial measures: Non-GAAP Measurements ($ in thousands, except per share amounts) December 31, 2018 September 30, 2018 June 30, 2018 March 31, 2018 December 31, 2017 Tangible Common Equity Ratio & Tangible Book Value Per Share Stockholders' equity 4,825,588 $ 4,741,685 $ 4,777,959 $ 4,867,490 $ 4,977,598 $ Less: Intangible assets 2,605,790 2,610,776 2,616,363 2,621,950 2,628,296 Tangible common equity 2,219,798 $ 2,130,909 $ 2,161,596 $ 2,245,540 $ 2,349,302 $ Total assets 25,731,354 $ 24,782,126 $ 24,529,557 $ 24,149,330 $ 24,994,876 $ Less: Intangible assets 2,605,790 2,610,776 2,616,363 2,621,950 2,628,296 Tangible assets 23,125,564 $ 22,171,350 $ 21,913,194 $ 21,527,380 $ 22,366,580 $ Tangible common equity ratio (1) 9.60% 9.61% 9.86% 10.43% 10.50% Tangible book value per share (2) 18.02 $ 17.28 $ 17.35 $ 17.75 $ 18.24 $ Shares outstanding 123,189,833 123,283,450 124,567,950 126,537,871 128,782,878 Return on Average Tangible Equity Net earnings 115,041 $ 116,287 $ 115,735 $ 118,276 $ 84,037 $ Average stockholders' equity 4,758,401 $ 4,748,819 $ 4,832,480 $ 4,901,207 $ 4,920,498 $ Less: Average intangible assets 2,608,497 2,614,055 2,619,351 2,625,593 2,495,876 Average tangible common equity 2,149,904 $ 2,134,764 $ 2,213,129 $ 2,275,614 $ 2,424,622 $ Return on average tangible equity (3) 21.23% 21.61% 20.98% 21.08% 13.75% (1) Tangible common equity divided by tangible assets (2) Tangible common equity divided by shares outstanding (3) Annualized net earnings divided by average tangible common equity.