among the material estimates required to establish the allowance are : loss exposure at default ; the amount and timing of future cash flows on impacted loans ; value of collateral ; and determination of loss factors to be applied to the various elements of the portfolio . all of these estimates are susceptible to significant change . management reviews the level of the allowance at least quarterly and establishes the provision for loan losses based upon an evaluation of the portfolio , past loss experience , current economic conditions and other factors related to the collectability of the loan portfolio . although we believe that we use the best information available to establish the allowance for loan losses , future adjustments to the allowance may be necessary if economic or other conditions differ substantially from the assumptions used in making the evaluation . in addition , the banking regulators , as an integral part of their examination process , periodically review our allowance for loan losses and may require us to recognize adjustments to the allowance based on their judgments about information available to them at the time of their examination . a large loss could deplete the allowance and require increased provisions to replenish the allowance , which would adversely affect earnings . see note 1 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information regarding the methodology used to determine the allowance for loan losses . valuation methodologies . in the ordinary course of business , management applies various valuation methodologies to assets and liabilities that often involve a significant degree of judgment , particularly when active markets do not exist for the items being valued . generally , in evaluating various assets for potential impairment , management compares the fair value to the carrying value . quoted market prices are referred to when estimating fair values for certain assets , such as investment securities . however , for those items for which market-based prices do not exist , management utilizes significant estimates and assumptions to value such items . examples of these items include loans held for sale , loan servicing rights , derivative financial instruments , goodwill and other intangible assets , foreclosed and other repossessed assets , estimated present value of impaired loans , value ascribed to stock-based compensation and certain other financial investments . the use of different assumptions could produce significantly different results , which could have material positive or negative effects on the company 's results of operations . see note 22 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information . deferred tax assets . income tax expense involves estimates related to the valuation allowance on deferred tax assets . a valuation allowance reduces deferred tax assets to the amount management believes is more likely than not to be realized . in evaluating the realization of deferred tax assets , management considers the likelihood that sufficient taxable income of appropriate character will be generated within carryback and carryforward periods , including consideration of available tax planning strategies . see note 18 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information . balance sheet analysis story_separator_special_tag > replace_table_token_8_th ​ ( 1 ) includes multifamily loans . ( 2 ) includes farmland , land and land development loans . ( 3 ) includes construction loans for which the bank has committed to provide permanent financing . 38 fixed vs. adjustable rate loans the following table sets forth the dollar amount of all loans at september 30 , 2020 that are due after september 30 , 2021 , and have either fixed interest rates or adjustable interest rates . the amounts shown below exclude unearned loan origination fees . ​ replace_table_token_9_th ​ ( 1 ) includes multifamily loans ( 2 ) includes farmland , land and land development loans . ( 3 ) includes construction loans for which the bank has committed to provide permanent financing . trading account securities . our trading account securities represent an investment in a managed brokerage account that invests in small and medium lot , investment grade municipal bonds . the brokerage account is managed by an investment advisory firm registered with the u.s. securities and exchange commission . the bank ceased its trading account securities activity and liquidated this portfolio as of june 30 , 2018. securities available for sale . our available for sale securities portfolio consists primarily of u.s. government agency and sponsored enterprises securities , mortgage backed securities and collateralized mortgage obligations issued by u.s. government agencies and sponsored enterprises , municipal bonds , privately-issued collateralized mortgage obligations and asset-backed securities , and pass-through asset-backed securities guaranteed by the sba . available for sale securities increased by $ 24.7 million , from $ 177.3 million at september 30 , 2019 to $ 202.0 million at september 30 , 2020 , due primarily to purchases of $ 37.8 million and an increase in unrealized gains of $ 4.8 million , partially offset by principal repayments of $ 6.0 million , sales of $ 3.2 million and maturities and calls of $ 8.2 million . securities held to maturity . our held to maturity securities portfolio consists of mortgage-backed securities issued by government sponsored enterprises and municipal bonds . held to maturity securities decreased by $ 234,000 from september 30 , 2019 to september 30 , 2020 , due primarily to maturities and principal repayments . 39 the following table sets forth the amortized costs and fair values of our investment securities at the dates indicated . ​ replace_table_token_10_th ​ the following table sets forth the stated maturities and weighted average yields of debt securities at september 30 , 2020. weighted average yields on tax-exempt securities are presented on a tax equivalent basis using a federal marginal tax rate of 21.0 % . story_separator_special_tag issuance costs , to 6.48 % for 2019 , net of amortization of debt issuance costs . 43 average balances and yields . the following tables present information regarding average balances of assets and liabilities , the total dollar amounts of interest income and dividends from average interest-earning assets , the total dollar amounts of interest expense on average interest-bearing liabilities , and the resulting annualized average yields and costs . the yields and costs for the periods indicated are derived by dividing income or expense by the average balances of assets or liabilities , respectively , for the periods presented . nonaccrual loans are included in average balances only . loan fees are included in interest income on loans and totaled $ 1.8 million , $ 753,000 and $ 723,000 for 2020 , 2019 and 2018 , respectively . tax exempt income on loans and investment securities for the 2020 , 2019 and 2018 periods has been adjusted to a tax equivalent basis using a federal marginal tax rate of 21.0 % , 21.0 % and 24.5 % , respectively . ​ replace_table_token_13_th ​ 44 rate/volume analysis . the following table sets forth the effects of changing rates and volumes on our net interest income . the rate column shows the effects attributable to changes in rate ( changes in rate multiplied by prior volume ) . the volume column shows the effects attributable to changes in volume ( changes in volume multiplied by prior rate ) . the net column represents the sum of the prior columns . changes attributable to changes in both rate and volume have been allocated proportionally based on the absolute dollar amounts of change in each . ​ replace_table_token_14_th ​ provision for loan losses . the provision for loan losses increased $ 6.5 million , or 444.2 % , from $ 1.5 million for the year ended september 30 , 2019 to $ 8.0 million for the year ended september 30 , 2020 due primarily to an increase in total loans of $ 289.3 million , an increase in nonperforming loans for the year and changes to qualitative factors within the allowance for loan losses calculation related to economic uncertainties surrounding the covid-19 pandemic . net charge-offs in 2020 were $ 976,000 compared to $ 746,000 for 2019 and nonperforming loans increased $ 8.4 million to $ 13.6 million at september 30 , 2020. in 2019 , the provision for loan losses increased $ 110,000 , or 8.1 % , from $ 1.4 million for the year ended september 30 , 2018 to $ 1.5 million for the year ended september 30 , 2019 due primarily to an increase in the total loans of $ 106.7 million . net charge-offs in 2019 were $ 746,000 compared to $ 122,000 for 2018 and nonperforming loans increased $ 907,000 to $ 5.2 million at september 30 , 2019. the consistent application of management 's allowance for loan losses methodology resulted in an increase in the level of the allowance for loan losses for 2020. see “ analysis of nonperforming and classified assets ” included herein . it is management 's assessment that the allowance for loan losses at september 30 , 2020 was adequate and appropriately reflected the probable incurred losses in the bank 's loan portfolio at that date . 45 noninterest income . noninterest income increased $ 87.2 million , or 199.0 % , from $ 43.9 million for the year ended september 30 , 2019 to $ 131.1 million for the year ended september 30 , 2020. the increase was due primarily to an increase in mortgage banking income of $ 84.8 million . the increase in mortgage banking income is due to production from the secondary-market residential mortgage lending segment that commenced operations in april 2018. net gains on the sale of loans guaranteed by the sba also increased $ 1.1 million for 2020. in 2019 , noninterest income increased $ 30.6 million , or 229.9 % , from $ 13.3 million for the year ended september 30 , 2018 to $ 43.9 million for the year ended september 30 , 2019. the increase was due primarily to increases in mortgage banking income and real estate lease income of $ 30.7 million and $ 589,000 , respectively . these increases were partially offset by a decrease in the net gain on sale of loans guaranteed by the sba of $ 924,000. the increase in mortgage banking income is due to production from the secondary-market residential mortgage lending segment that commenced operations in april 2018. the increase in real estate lease income for 2019 is due to the acquisition in october 2018 of a commercial office building that now serves as the company 's new corporate headquarters , a portion of which is leased to other tenants . noninterest expense . noninterest expenses increased $ 63.4 million , or 101.6 % , from $ 62.4 million for the year ended september 30 , 2019 to $ 125.8 million for the year ended september 30 , 2020. the increase was due primarily to increases in compensation and benefits , advertising expense and other operating expenses of $ 50.0 million , $ 4.6 million and $ 4.2 million , respectively . the increase in compensation and benefits expense is attributable to the addition of new employees primarily to support the growth of the company 's mortgage banking and sba lending activities , routine salary and benefits adjustments , and increased incentive compensation as a result of the company 's performance . the increases in advertising expense and other operating expenses are primarily due to the mortgage banking segment . in 2019 , noninterest expenses increased $ 29.4 million , or 89.0 % , from $ 33.0 million for the year ended september 30 , 2018 to $ 62.4 million for the year ended september 30 , 2019. the increase was due primarily to increases in compensation and benefits , occupancy and equipment , advertising

cash and cash equivalents . at september 30 , 2020 and 2019 , cash and cash equivalents totaled $ 33.7 million and $ 41.4 million , respectively . the bank is required to maintain reserve balances on hand and with the federal reserve bank , which are unavailable for investment but are interest-bearing . loans . our primary lending activity is the origination of loans secured by real estate . we originate one to four family mortgage loans , multifamily loans , commercial real estate loans , commercial business loans and construction loans . to a lesser extent , we originate various consumer loans including home equity lines of credit . net loans increased $ 279.4 million , from $ 810.7 million at september 30 , 2019 to $ 1.09 billion at september 30 , 2020. at september 30 , 2020 , residential mortgage loans totaled $ 191.8 million , or 17.3 % of total loans , compared to $ 197.5 million , or 24.1 % of total loans at september 30 , 2019. we generally originate loans for investment purposes , although , depending on the interest rate environment , we typically sell 25-year and 30-year fixed rate residential mortgage loans that we originate into the secondary market in order to limit exposure to interest rate risk and to earn noninterest income . management intends to continue offering short-term adjustable rate residential mortgage loans and generally sell long-term fixed rate mortgage loans in the secondary market .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash and cash equivalents . at september 30 , 2020 and 2019 , cash and cash equivalents totaled $ 33.7 million and $ 41.4 million , respectively . the bank is required to maintain reserve balances on hand and with the federal reserve bank , which are unavailable for investment but are interest-bearing . loans . our primary lending activity is the origination of loans secured by real estate . we originate one to four family mortgage loans , multifamily loans , commercial real estate loans , commercial business loans and construction loans . to a lesser extent , we originate various consumer loans including home equity lines of credit . net loans increased $ 279.4 million , from $ 810.7 million at september 30 , 2019 to $ 1.09 billion at september 30 , 2020. at september 30 , 2020 , residential mortgage loans totaled $ 191.8 million , or 17.3 % of total loans , compared to $ 197.5 million , or 24.1 % of total loans at september 30 , 2019. we generally originate loans for investment purposes , although , depending on the interest rate environment , we typically sell 25-year and 30-year fixed rate residential mortgage loans that we originate into the secondary market in order to limit exposure to interest rate risk and to earn noninterest income . management intends to continue offering short-term adjustable rate residential mortgage loans and generally sell long-term fixed rate mortgage loans in the secondary market .
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 Suspicious Activity Report : among the material estimates required to establish the allowance are : loss exposure at default ; the amount and timing of future cash flows on impacted loans ; value of collateral ; and determination of loss factors to be applied to the various elements of the portfolio . all of these estimates are susceptible to significant change . management reviews the level of the allowance at least quarterly and establishes the provision for loan losses based upon an evaluation of the portfolio , past loss experience , current economic conditions and other factors related to the collectability of the loan portfolio . although we believe that we use the best information available to establish the allowance for loan losses , future adjustments to the allowance may be necessary if economic or other conditions differ substantially from the assumptions used in making the evaluation . in addition , the banking regulators , as an integral part of their examination process , periodically review our allowance for loan losses and may require us to recognize adjustments to the allowance based on their judgments about information available to them at the time of their examination . a large loss could deplete the allowance and require increased provisions to replenish the allowance , which would adversely affect earnings . see note 1 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information regarding the methodology used to determine the allowance for loan losses . valuation methodologies . in the ordinary course of business , management applies various valuation methodologies to assets and liabilities that often involve a significant degree of judgment , particularly when active markets do not exist for the items being valued . generally , in evaluating various assets for potential impairment , management compares the fair value to the carrying value . quoted market prices are referred to when estimating fair values for certain assets , such as investment securities . however , for those items for which market-based prices do not exist , management utilizes significant estimates and assumptions to value such items . examples of these items include loans held for sale , loan servicing rights , derivative financial instruments , goodwill and other intangible assets , foreclosed and other repossessed assets , estimated present value of impaired loans , value ascribed to stock-based compensation and certain other financial investments . the use of different assumptions could produce significantly different results , which could have material positive or negative effects on the company 's results of operations . see note 22 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information . deferred tax assets . income tax expense involves estimates related to the valuation allowance on deferred tax assets . a valuation allowance reduces deferred tax assets to the amount management believes is more likely than not to be realized . in evaluating the realization of deferred tax assets , management considers the likelihood that sufficient taxable income of appropriate character will be generated within carryback and carryforward periods , including consideration of available tax planning strategies . see note 18 of the notes to consolidated financial statements beginning on page f-1 of this annual report for additional information . balance sheet analysis story_separator_special_tag > replace_table_token_8_th ​ ( 1 ) includes multifamily loans . ( 2 ) includes farmland , land and land development loans . ( 3 ) includes construction loans for which the bank has committed to provide permanent financing . 38 fixed vs. adjustable rate loans the following table sets forth the dollar amount of all loans at september 30 , 2020 that are due after september 30 , 2021 , and have either fixed interest rates or adjustable interest rates . the amounts shown below exclude unearned loan origination fees . ​ replace_table_token_9_th ​ ( 1 ) includes multifamily loans ( 2 ) includes farmland , land and land development loans . ( 3 ) includes construction loans for which the bank has committed to provide permanent financing . trading account securities . our trading account securities represent an investment in a managed brokerage account that invests in small and medium lot , investment grade municipal bonds . the brokerage account is managed by an investment advisory firm registered with the u.s. securities and exchange commission . the bank ceased its trading account securities activity and liquidated this portfolio as of june 30 , 2018. securities available for sale . our available for sale securities portfolio consists primarily of u.s. government agency and sponsored enterprises securities , mortgage backed securities and collateralized mortgage obligations issued by u.s. government agencies and sponsored enterprises , municipal bonds , privately-issued collateralized mortgage obligations and asset-backed securities , and pass-through asset-backed securities guaranteed by the sba . available for sale securities increased by $ 24.7 million , from $ 177.3 million at september 30 , 2019 to $ 202.0 million at september 30 , 2020 , due primarily to purchases of $ 37.8 million and an increase in unrealized gains of $ 4.8 million , partially offset by principal repayments of $ 6.0 million , sales of $ 3.2 million and maturities and calls of $ 8.2 million . securities held to maturity . our held to maturity securities portfolio consists of mortgage-backed securities issued by government sponsored enterprises and municipal bonds . held to maturity securities decreased by $ 234,000 from september 30 , 2019 to september 30 , 2020 , due primarily to maturities and principal repayments . 39 the following table sets forth the amortized costs and fair values of our investment securities at the dates indicated . ​ replace_table_token_10_th ​ the following table sets forth the stated maturities and weighted average yields of debt securities at september 30 , 2020. weighted average yields on tax-exempt securities are presented on a tax equivalent basis using a federal marginal tax rate of 21.0 % . story_separator_special_tag issuance costs , to 6.48 % for 2019 , net of amortization of debt issuance costs . 43 average balances and yields . the following tables present information regarding average balances of assets and liabilities , the total dollar amounts of interest income and dividends from average interest-earning assets , the total dollar amounts of interest expense on average interest-bearing liabilities , and the resulting annualized average yields and costs . the yields and costs for the periods indicated are derived by dividing income or expense by the average balances of assets or liabilities , respectively , for the periods presented . nonaccrual loans are included in average balances only . loan fees are included in interest income on loans and totaled $ 1.8 million , $ 753,000 and $ 723,000 for 2020 , 2019 and 2018 , respectively . tax exempt income on loans and investment securities for the 2020 , 2019 and 2018 periods has been adjusted to a tax equivalent basis using a federal marginal tax rate of 21.0 % , 21.0 % and 24.5 % , respectively . ​ replace_table_token_13_th ​ 44 rate/volume analysis . the following table sets forth the effects of changing rates and volumes on our net interest income . the rate column shows the effects attributable to changes in rate ( changes in rate multiplied by prior volume ) . the volume column shows the effects attributable to changes in volume ( changes in volume multiplied by prior rate ) . the net column represents the sum of the prior columns . changes attributable to changes in both rate and volume have been allocated proportionally based on the absolute dollar amounts of change in each . ​ replace_table_token_14_th ​ provision for loan losses . the provision for loan losses increased $ 6.5 million , or 444.2 % , from $ 1.5 million for the year ended september 30 , 2019 to $ 8.0 million for the year ended september 30 , 2020 due primarily to an increase in total loans of $ 289.3 million , an increase in nonperforming loans for the year and changes to qualitative factors within the allowance for loan losses calculation related to economic uncertainties surrounding the covid-19 pandemic . net charge-offs in 2020 were $ 976,000 compared to $ 746,000 for 2019 and nonperforming loans increased $ 8.4 million to $ 13.6 million at september 30 , 2020. in 2019 , the provision for loan losses increased $ 110,000 , or 8.1 % , from $ 1.4 million for the year ended september 30 , 2018 to $ 1.5 million for the year ended september 30 , 2019 due primarily to an increase in the total loans of $ 106.7 million . net charge-offs in 2019 were $ 746,000 compared to $ 122,000 for 2018 and nonperforming loans increased $ 907,000 to $ 5.2 million at september 30 , 2019. the consistent application of management 's allowance for loan losses methodology resulted in an increase in the level of the allowance for loan losses for 2020. see “ analysis of nonperforming and classified assets ” included herein . it is management 's assessment that the allowance for loan losses at september 30 , 2020 was adequate and appropriately reflected the probable incurred losses in the bank 's loan portfolio at that date . 45 noninterest income . noninterest income increased $ 87.2 million , or 199.0 % , from $ 43.9 million for the year ended september 30 , 2019 to $ 131.1 million for the year ended september 30 , 2020. the increase was due primarily to an increase in mortgage banking income of $ 84.8 million . the increase in mortgage banking income is due to production from the secondary-market residential mortgage lending segment that commenced operations in april 2018. net gains on the sale of loans guaranteed by the sba also increased $ 1.1 million for 2020. in 2019 , noninterest income increased $ 30.6 million , or 229.9 % , from $ 13.3 million for the year ended september 30 , 2018 to $ 43.9 million for the year ended september 30 , 2019. the increase was due primarily to increases in mortgage banking income and real estate lease income of $ 30.7 million and $ 589,000 , respectively . these increases were partially offset by a decrease in the net gain on sale of loans guaranteed by the sba of $ 924,000. the increase in mortgage banking income is due to production from the secondary-market residential mortgage lending segment that commenced operations in april 2018. the increase in real estate lease income for 2019 is due to the acquisition in october 2018 of a commercial office building that now serves as the company 's new corporate headquarters , a portion of which is leased to other tenants . noninterest expense . noninterest expenses increased $ 63.4 million , or 101.6 % , from $ 62.4 million for the year ended september 30 , 2019 to $ 125.8 million for the year ended september 30 , 2020. the increase was due primarily to increases in compensation and benefits , advertising expense and other operating expenses of $ 50.0 million , $ 4.6 million and $ 4.2 million , respectively . the increase in compensation and benefits expense is attributable to the addition of new employees primarily to support the growth of the company 's mortgage banking and sba lending activities , routine salary and benefits adjustments , and increased incentive compensation as a result of the company 's performance . the increases in advertising expense and other operating expenses are primarily due to the mortgage banking segment . in 2019 , noninterest expenses increased $ 29.4 million , or 89.0 % , from $ 33.0 million for the year ended september 30 , 2018 to $ 62.4 million for the year ended september 30 , 2019. the increase was due primarily to increases in compensation and benefits , occupancy and equipment , advertising

