STI 2018 Annual Report

28 Item 6. SELECTED FINANCIAL DATA (continued) Year Ended December 31 2018 2017 2016 2015 2014 Capital Ratios at period end 2 : CET1 (Basel III) 9.21% 9.74% 9.59% 9.96% N/A Tier 1 common equity (Basel I) N/A N/A N/A N/A 9.60% Tier 1 capital 10.30 11.15 10.28 10.80 10.80 Total capital 12.02 13.09 12.26 12.54 12.51 Leverage 9.26 9.80 9.22 9.69 9.64 1 See Table 29 in Item 7 (MD&A) of this Form 10-K for a reconcilement of non-U.S. GAAP measures and additional information. 2 Basel III Final Rules became effective for the Company on January 1, 2015; thus, Basel III CET1 ratios are not applicable ("N/A") in periods ending prior to January 1, 2015 and Basel I Tier 1 common equity ratio is N/A in periods ending after January 1, 2015. Tier 1 capital, Total capital, and Leverage ratios for periods ended prior to January 1, 2015 were calculated under Basel I. Basel III capital ratios are calculated under the standardized approach using regulatory capital methodology applicable to the Company for each period presented, including the phase-in of transition provisions through January 1, 2018.