Loan Portfolio and Risk Management - As of December 31, 2019, approximately 48% of the Company's loan portfolio consisted of commercial and industrial, agricultural, commercial construction, and commercial real estate loans, which generally expose the Company to greater risk of non-payment and loss compared to residential real estate loans [94]. - The Company maintains an allowance for loan losses, which is an estimate of incurred losses within the existing portfolio of loans, and changes in economic conditions may require an increase in this allowance, potentially impacting net income and capital [97]. - The adoption of the CECL model, effective January 1, 2020, is expected to create more volatility in the level of the allowance for loan losses, influenced by macroeconomic forecasts and credit quality [97]. - The Company maintains an allowance for loan losses, which is subject to management's estimates and may not be sufficient to cover actual loan losses, potentially impacting financial condition and results of operations [97]. - The Company recognizes impairment charges for investments when their fair value declines below cost, which could negatively impact financial performance [119]. Financial Position and Regulatory Environment - The Company had total assets of approximately $9.7 billion as of December 31, 2019, and may face heightened regulatory requirements if total consolidated assets exceed $10 billion [102]. - The Company had total assets of approximately $9.7 billion as of December 31, 2019, and may exceed $10 billion in total consolidated assets in the near future, which would subject it to heightened regulatory requirements [102]. - The Company is subject to extensive federal and state regulation, which may limit the types of financial services offered and increase operational costs, potentially impacting earnings [100]. - The Company is subject to extensive government regulation, which may interfere with its ability to conduct business and negatively impact financial results [100]. Competition and Market Conditions - The Company faces substantial competition from various financial institutions, which may affect its growth and profitability due to larger competitors having more financial resources and fewer regulatory constraints [98]. - The Company faces strong competition from various financial institutions, which may adversely affect its performance and growth [98]. - Economic volatility may adversely impact the Company's business, including decreased investor confidence and increased delinquencies and default rates [116]. - Economic volatility may adversely impact the Company's financial position, leading to decreased investor confidence and potential declines in credit usage [116]. Operational Risks and Management - Liquidity management is crucial for the Company, with a focus on maintaining a basic surplus above the minimum policy level of 5%, which could be pressured by competitive deposit pricing and loan growth exceeding deposit growth [107]. - The Company relies on dividends from its subsidiaries as the principal source of funds for obligations, and any inability of the Bank to pay dividends could adversely affect the Company's financial condition [108]. - The Company is dependent on its executive management team, and the loss of key personnel could adversely affect operations [130]. - The Company relies on third-party vendors for key business operations, and any issues with these vendors could adversely affect its ability to deliver services [115]. - The Company is exposed to operational risks from fraud, which may lead to financial losses or reputational harm despite substantial resources devoted to prevention [113]. Technological Changes and Cybersecurity - The financial services industry is undergoing rapid technological changes, and the Company's future success depends on its ability to effectively implement new technology-driven products and services [114]. - Cybersecurity risks are a significant concern for the Company, as incidents could disrupt operations and harm financial condition, necessitating ongoing investment in security measures [109]. - Cybersecurity risks pose a significant threat to the Company's operations, potentially leading to material harm to financial condition and business relationships [109]. - The Company faces continuous cybersecurity risks requiring ongoing attention and resources to identify and mitigate potential threats [111]. Future Acquisitions and Financial Instruments - Future acquisitions may present risks, including potential declines in demand for fee-based services and exposure to asset quality issues of acquired businesses [121]. - Future acquisitions may present risks, including exposure to asset quality issues and the challenge of integrating operations, which could affect financial results [121]. - The transition from LIBOR to alternative rates like SOFR could create considerable costs and risks, impacting the Company's financial instruments [128]. - The transition from LIBOR to alternative rates like SOFR could create considerable costs and risks, impacting the value of LIBOR-linked financial instruments [128]. Stock and Shareholder Considerations - The Company's common stock price may fluctuate significantly due to various factors, including economic conditions and regulatory actions [132]. - The Company's common stock price may fluctuate significantly due to various factors including political climate, changes in analysts' recommendations, and general economic conditions [132]. - The Company is not restricted from issuing additional common stock, which may lead to dilution of existing shareholders' equity [133]. - Provisions in the Company's bylaws and Delaware law could delay or prevent a takeover, potentially affecting stockholder value [131]. - Provisions in the Company's certificate of incorporation and bylaws could delay or prevent a takeover by a third party, potentially affecting stockholder benefits [131].

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019. OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________. COMMISSION FILE NUMBER 0-14703 NBT BANCORP INC. (Exact Name of Registrant as Specified in its Charter) Delaware 16-1268674 (State ...

Financial Performance - Net income for Q2 2019 was $30.6 million, up 4.9% from Q1 2019 and up 8.7% from Q2 2018[145] - Diluted earnings per share for Q2 2019 was $0.69, an increase of 4.5% from the prior quarter and 7.8% from the same period last year[145] - Net income for the six months ended June 30, 2019 was $59.7 million, up 10.3% from the same period last year[146] Interest Income and Margin - Net interest income for Q2 2019 was $78.6 million, up 1.2% from Q1 2019[149] - FTE net interest margin for the six months ended June 30, 2019 was 3.63%, up 6 basis points from 2018[143] - Interest income rose by $19.1 million, or 11.5%, due to the increase in earning assets and a 30 basis point improvement in loan yields[151] - The net interest margin (FTE) for the six months ended June 30, 2019, was 3.63%, up from 3.57% for the same period in 2018[155] Assets and Liabilities - Average interest-earning assets increased by $70 million to $8.8 billion compared to the prior quarter[149] - Total interest-earning assets for the three months ended June 30, 2019, were $8.78 billion, with a net interest income (FTE) of $79.07 million[153] - The average cost of interest-bearing liabilities increased by 38 basis points, with total interest-bearing liabilities amounting to $6.08 billion[153] Loan Performance - Total loans increased by $75.6 million to $6.96 billion as of June 30, 2019, representing approximately 72.3% of total assets[169] - The allowance for loan losses totaled $72.2 million at June 30, 2019, compared to $71.4 million at March 31, 2019, and $72.5 million at June 30, 2018, representing a stable allowance level[178] - Net charge-offs for the three months ended June 30, 2019, were $6.5 million, down from $6.9 million in the prior quarter and comparable to the second quarter of 2018[175] Noninterest Income and Expense - Noninterest income for the three months ended June 30, 2019 was $34.2 million, up $0.4 million, or 1.2%, from the prior quarter and comparable with the second quarter of 2018[162] - Noninterest expense for the three months ended June 30, 2019 was $66.2 million, down $2.2 million, or 3.3%, from the prior quarter[164] - Noninterest expense for the six months ended June 30, 2019 was $134.7 million, up $5.5 million, or 4.3%, from the same period in 2018[165] Tax and Equity - Income tax expense for the three months ended June 30, 2019 was $8.8 million, up $0.7 million from the prior quarter and from the second quarter of 2018[166] - The effective tax rate for the second quarter of 2019 was 22.4%, up from 21.8% in the first quarter of 2019[166] - Stockholders' equity increased to $1.1 billion, representing 11.15% of total assets at June 30, 2019, compared to $1.0 billion, or 10.65%, at December 31, 2018[187] Capital and Liquidity - The Company maintained a tier 1 leverage ratio of 9.88% and a common equity tier 1 capital ratio of 10.95% at June 30, 2019, indicating strong capital position[191] - The Company’s Basic Surplus measurement was 15.8% of total assets or approximately $1.5 billion as of June 30, 2019, up from 11.2% or $1.1 billion at December 31, 2018[202] - The Bank had approximately $140.9 million available for payment of dividends to the Company without OCC approval as of June 30, 2019[205] Risk Management - The Company aims to manage interest rate risk while minimizing net interest margin compression, adjusting its asset/liability position as needed[197] - The earnings at risk modeling is the primary tool used to manage interest rate risk, with scenarios including a flat rate, a gradual increase of 200 bps, and a gradual decrease of 100 bps over 12 months[198] - In the declining rate scenario, net interest income is projected to decrease by 1.85% compared to the flat rate scenario, while in the rising rate scenario, a slight decline of 0.88% is anticipated[199][200] Deposits and Competition - Total deposits were $7.6 billion at June 30, 2019, an increase of $225.5 million, or 3.1%, from December 31, 2018[184] - Increasing competition for deposits could lead to a decrease in the Company's deposit base or increase funding costs, impacting liquidity[204]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019. OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________. COMMISSION FILE NUMBER 0-14703 NBT BANCORP INC. (Exact Name of Registrant as Specified in its Charter) DELAWARE 16-1268674 (State of I ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2018 COMMISSION FILE NUMBER: 0-14703 NBT BANCORP INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (IRS Employer Identification No.) Delaware 16-1268674 52 SOUTH BROAD STREET NORWICH, NEW YORK 13815 (Address of principal executive of ...