ISBC 2017 Form 10-K & 2018 Proxy Statement

FORM 10-K The following table sets forth, by rate category, the amount of certificates of deposit outstanding as of the dates indicated. At December 31, 2017 2016 2015 (Dollars in thousands) Certificates of Deposit 0.00% - 0.25% $ 527,836 $ 639,425 $ 606,970 0.26% - 0.50% 141,253 194,827 304,458 0.51% - 1.00% 396,098 643,526 384,941 1.01% - 2.00% 2,355,997 1,427,999 1,791,549 2.01% - 3.00% 37,808 31,956 301,930 Over 3.00% 1,270 9,827 26,462 Total $3,460,262 $2,947,560 $3,416,310 The following table sets forth, by rate category, the remaining period to maturity of certificates of deposit outstanding at December 31, 2017. Within Three Months Over Three to Six Months Over Six Months to One Year Over One Year to Two Years Over Two Years to Three Years Over Three Years Total (Dollars in thousands) Certificates of Deposit 0.00% - 0.25% $219,678 $121,546 $ 159,436 $ 8,309 $ 8,290 $ 10,577 $ 527,836 0.26% - 0.50% 25,076 26,751 36,365 52,996 56 9 141,253 0.51% - 1.00% 68,130 132,725 29,067 37,397 40,078 88,701 396,098 1.01% - 2.00% 375,905 488,746 1,156,638 285,021 20,475 29,212 2,355,997 2.01% - 3.00% — 20 555 4,432 27,866 4,935 37,808 Over 3.00% 139 334 108 106 326 257 1,270 Total $688,928 $770,122 $1,382,169 $388,261 $97,091 $133,691 $3,460,262 The following table sets forth the aggregate amount of outstanding certificates of deposit in amounts greater than or equal to $100,000 and the respective maturity of those certificates as of December 31, 2017. At December 31, 2017 (In thousands) Three months or less $ 475,735 Over three months through six months 591,987 Over six months through one year 908,666 Over one year 394,349 Total $2,370,737 Borrowings. We borrow directly from the FHLB. Our FHLB borrowings, frequently referred to as advances, are collateralized by our residential and commercial mortgage portfolios. The following table sets forth information concerning balances and interest rates on our advances from the FHLB at the dates and for the periods indicated. At or for the Year Ended December 31, 2017 2016 2015 2014 2013 (Dollars in thousands) Balance at end of period $4,331,052 $4,391,420 $3,106,783 $2,598,186 $3,099,593 Average balance during period 4,526,596 3,663,087 2,997,873 2,548,744 3,015,058 Maximum outstanding at any month end 5,355,298 4,391,420 3,548,000 3,230,000 3,586,000 Weighted average interest rate at end of period 1.96% 1.79% 2.12% 2.24% 1.83% Average interest rate during period 1.88% 1.86% 2.06% 2.19% 1.90% 20