CHFC 2017 Annual Report

At December 31, 2017, the gross unrealized losses in our investment securities portfolio of $35.2 million were comprised as follows: state and political subdivisions securities of $22.4 million, GSA securities, residential MBSs and CMOs, combined, of $11.0 million, corporate bonds of $1.6 million and TRUPs of $0.2 million. The amortized costs and fair values of investment securities are disclosed in Note 4 to our Consolidated Financial Statements. State and political subdivisions securities, included in our available-for-sale and held-to-maturity investment securities portfolios, had an amortized cost of $1.03 billion and gross unrealized losses of $22.4 million at December 31, 2017. Our state and political subdivisions securities are from issuers mostly located in the State of Michigan and of which approximately 90.0% are general obligations of the issuer, meaning that repayment of these obligations is funded by general tax collections of the issuer. The gross unrealized losses were attributable to state and political subdivisions securities with an amortized cost of $809.0 million that generally mature beyond 2018. It was our assessment that the unrealized losses on these investment securities were attributable to current market interest rates being slightly higher than the yield on these investment securities and illiquidity in the market due to the nature of a portion of these investment securities.We concluded that the unrealized losses in our state and political subdivisions securities were temporary in nature at December 31, 2017. GSA securities, residential MBSs and CMOs, included in our available-for-sale investment securities portfolio, had a combined amortized cost of $1.40 billion and gross unrealized losses of $11.0 million at December 31, 2017. Virtually all of the investment securities in these categories are backed by the full faith and credit of the U.S. government or a guarantee of a U.S. government agency or government sponsored enterprise. We determined that the unrealized losses on these investment securities were attributable to current market interest rates being higher than the yields being earned on these investment securities. We concluded that the unrealized losses in our GSAsecurities, residential MBSs and CMOs were temporary in nature at December 31, 2017. Corporate bonds included in our available-for-sale investment securities portfolio had an amortized cost of $193.2 million and gross unrealized losses of $1.6 million at December 31, 2017. The investment securities in this category are investment grade securities and none have had recent downgrades. We determined that the unrealized losses on these investment securities were attributable to current market interest rates being higher than the yields being earned on these investment securities. We concluded that the unrealized loss was temporary in nature at December 31, 2017. At December 31, 2017, we held one TRUP in our held-to-maturity investment securities portfolio, with an amortized cost of $0.5million and gross unrealized loss of $0.1million. This TRUP represents a 10% interest in the TRUPof a well-capitalized non-public bank holding company inMichigan. The principal of $0.5 million of this TRUPmatures in 2033, with interest payments due quarterly. All scheduled interest payments on this TRUP have been made on a timely basis. We determined that the unrealized loss on this TRUP was attributable to a lack of liquidity for issuances of this size. We concluded that the unrealized loss was temporary in nature at December 31, 2017. At December 31, 2017, we expected to fully recover the entire amortized cost basis of each investment security in an unrealized loss position in our investment securities portfolio at that date. Furthermore, at December 31, 2017, we did not have the intent to sell any of our investment securities in an unrealized loss position and believed that it was more-likely-than-not that we would not have to sell any of our investment securities before a full recovery of amortized cost. However, there can be no assurance that OTTI losses will not be recognized on any investment security in the future. 49 Loans Our loan portfolio is comprised of commercial, commercial real estate and real estate construction and land development loans, referred to as our commercial loan portfolio, and residential mortgage, consumer installment and home equity loans, referred to as our consumer loan portfolio. At December 31, 2017, our loan portfolio was $14.16 billion and consisted of loans in the commercial loan portfolio totaling $8.46 billion, or 59.8% of total loans, and loans in the consumer loan portfolio totaling $5.69 billion, or 40.2% of total loans. Chemical Bank is a full-service commercial bank and the acceptance and management of credit risk is an integral part of our business. We maintain loan policies and credit underwriting standards as part of the process of managing credit risk. These standards include making loans generally only within our market areas. Our lending markets generally consist of communities throughout Michigan and additional communities located within Northeast Ohio and Northern Indiana. Our lending philosophy is implemented through strong administrative and reporting controls. We maintain a centralized independent loan review function that monitors the approval process and ongoing asset quality of the loan portfolio. Total loans were $14.16 billion at December 31, 2017, an increase of $1.16 billion, or 9.0%, from total loans of $12.99 billion at December 31, 2016. The increase in total loans during 2017 was attributable to organic loan growth of $2.29 billion, or 30.7%, partially offset by run-off in the acquired loan portfolio of $1.12 billion. Total loans increased $5.72 billion, or 79%, during 2016, from total loans of $7.27 billion at December 31, 2015. The increase in total loans during 2016 was attributable to $4.88