Earnings release
Page 1
BOK Financial Corporation reports quarterly earnings of $160 million, or $2.64 per share, in the third quarter. Third quarter 2026 financial highlights Net Income Net income was $159.9 million, or $2.64 per diluted share, compared to $176.5 million, or $2.92 per diluted share. Prior quarter net income would have been $156.5 million, or $2.59 per diluted share, excluding the net gain related to the exchange of Visa B shares and the loss from repositioning of the available-for-sale securities portfolio. Net Interest Income & Margin Net interest income totaled $370.0 million, an increase of $18.1 million. Net interest margin was 3.00% for the third quarter compared to 2.91% in the prior quarter. Fees & Commissions Revenue Fees and commissions revenue was $188.0 million compared to $202.0 million in the prior quarter. Brokerage and trading revenue decreased $13.0 million due to an unfavorable rate environment and lower fixed-income trading volumes. Operating Expense Operating expense was largely consistent with the prior quarter at $360.7 million, as both personnel and non-personnel expense remained stable compared to the second quarter of 2026. Loans Period end loans were up $646 million over the prior quarter, to $27.7 billion, led by growth in energy loans, loans secured by industrial facilities, and mortgage finance loans. Average outstanding loan balances were $27.2 billion, an increase of $468 million. Credit Quality Nonperforming assets were $67 million, or 0.24% of outstanding loans and repossessed assets, at September 30, 2026, compared to $63 million, or 0.23%, at June 30, 2026. Net charge-offs for the third quarter were $886 thousand, or 0.01% of average loans on an annualized basis. Deposits Period end deposits decreased $324 million to $39.5 billion, and average deposits increased $304 million to $39.5 billion. Average interest-bearing deposits increased $278 million and average demand deposits increased by $26 million. The loan to deposit ratio was 70% at September 30, 2026, compared to 68% at June 30, 2026. Capital Tangible common equity ratio was 9.16% compared to 9.61% at June 30, 2026. Common equity Tier 1 capital ratio was 12.73%, Tier 1 capital ratio was 12.73%, and total capital ratio was 14.43%. p $646 million 2 bps $129.3 billion LOAN GROWTH NET CHARGE-OFFS (TTM) AUMA CEO Commentary Stacy Kymes, President and CEO, stated, “We delivered another strong quarter, with $646 million of loan growth, 11.5% year- over-year loan growth, continued expansion in core net interest income, and peer-leading credit outcomes. Our disciplined approach to managing the balance sheet also helped us exit the quarter with top-quartile tangible common equity, despite a period of rapidly increasing interest rates. These results are intentional, not accidental. They reflect decisions we have made consistently over many years around capital, liquidity, interest rate risk and credit. Higher rates created headwinds for mortgage banking and fixed-income trading this quarter, but we view those businesses through the cycle, where they provide an important source of diversification to our overall earnings profile. We manage the company for the long term, not for any one quarter. That discipline, combined with the diversity of our franchise, positions us to deliver durable performance and continue serving our customers well across a wide range of operating environments." 1 2 2
Page 2
Comparisons are to the prior quarter unless otherwise noted. See Explanation and Reconciliation of Non-GAAP Measures - Unaudited section following. 1 2
Page 3
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Net Interest Income (Dollars in thousands) Sep. 30, 2026 June 30, 2026 Change % Change Tax-equivalent interest revenue Interest-bearing cash and cash equivalents $ 4,903 $ 5,011 $ (108) (2.2)% Trading securities 76,118 70,590 5,528 7.8 % Investment securities 5,139 5,770 (631) (10.9)% Available-for-sale securities 143,898 135,676 8,222 6.1 % Fair value option securities 280 849 (569) (67.0)% Restricted equity securities 9,031 8,838 193 2.2 % Residential mortgage loans held for sale 1,422 1,452 (30) (2.1)% Loans 428,269 413,667 14,602 3.5 % Total tax-equivalent interest revenue $ 669,060 $ 641,853 $ 27,207 4.2 % Interest expense Interest-bearing deposits: Transaction $ 182,272 $ 176,460 $ 5,812 3.3 % Savings 1,203 1,206 (3) (0.2)% Time 33,368 32,443 925 2.9 % Total interest-bearing deposits 216,843 210,109 6,734 3.2 % Funds purchased and repurchase agreements 2,905 4,016 (1,111) (27.7)% Other borrowings 70,452 66,982 3,470 5.2 % Subordinated debentures 6,176 6,197 (21) (0.3)% Total interest expense 296,376 287,304 9,072 3.2 % Tax-equivalent net interest income 372,684 354,549 18,135 5.1 % Less: Tax-equivalent adjustment 2,709 2,719 (10) (0.4)% Net interest income $ 369,975 $ 351,830 $ 18,145 5.2 % Net interest margin 3.00 % 2.91 % 0.09 % N/A Average earning assets $ 49,410,198 $ 48,776,712 $ 633,486 1.3 % Average trading securities 5,908,204 5,876,732 31,472 0.5 % Average investment securities 1,591,744 1,676,175 (84,431) (5.0)% Average available-for-sale securities 13,854,420 13,554,693 299,727 2.2 % Average fair value option securities 27,833 71,064 (43,231) (60.8)% Average restricted equity securities 439,155 461,753 (22,598) (4.9)% Average loans balance 27,237,703 26,769,638 468,065 1.7 % Average interest-bearing deposits 31,825,110 31,547,501 277,609 0.9 % Average funds purchased and repurchase agreements 375,717 520,881 (145,164) (27.9)% Average other borrowings 7,163,522 6,922,451 241,071 3.5 % Net interest income was $370.0 million for the third quarter of 2026, an increase of $18.1 million over the prior quarter. Net interest margin expanded to 3.00% from 2.91%. For the third quarter of 2026, our core net interest margin excluding trading activities , a non-GAAP measure, increased 8 basis points to 3.21% compared to 3.13% in the prior quarter. Net interest income and margin benefited from loan growth and fixed-rate asset repricing. Average earning assets increased $633 million. Average loan balances increased $468 million. Average available-for-sale securities grew $300 million and trading securities increased $31 million. Average interest-bearing deposits increased $278 million, primarily from growth in interest-bearing transaction accounts and time deposits. Average other borrowings increased $241 million, while average funds purchased and repurchase agreements decreased $145 million. 1 See Explanation and Reconciliation of Non-GAAP Measures - Unaudited section following. 1
Page 4
2
Page 5
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) The yield on average earning assets was 5.37%, a 10 basis point increase over the prior quarter. The loan portfolio yield increased 4 basis points to 6.24%. The yield on trading securities increased 30 basis points to 5.15% and the yield on available-for-sale securities increased 13 basis points to 4.11%. Funding costs were 2.96%, up 3 basis points. The cost of interest-bearing deposits increased 3 basis points to 2.70%. The cost of other borrowings increased 2 basis points to 3.90%, while the cost of funds purchased and repurchase agreements decreased 2 basis points to 3.07%. The benefit to net interest margin from assets funded by noninterest-bearing liabilities was 59 basis points, an increase of 2 basis points. Other Operating Revenue (Dollars in thousands) Sep. 30, 2026 June 30, 2026 Change % Change Brokerage and trading revenue $ 19,451 $ 32,450 $ (12,999) (40.1)% Transaction card revenue 32,205 31,597 608 1.9 % Fiduciary and asset management revenue 69,863 71,007 (1,144) (1.6)% Deposit service charges and fees 34,140 33,326 814 2.4 % Mortgage banking revenue 16,740 18,985 (2,245) (11.8)% Other revenue 15,556 14,627 929 6.4 % Total fees and commissions 187,955 201,992 (14,037) (6.9)% Other gains, net 5,693 42,415 (36,722) N/A Loss on derivatives, net (19,282) (8,490) (10,792) N/A Loss on fair value option securities, net (1,151) — (1,151) N/A Change in fair value of mortgage servicing rights 18,256 6,300 11,956 N/A Loss on available-for-sale securities, net — (4,645) 4,645 N/A Total other operating revenue $ 191,471 $ 237,572 $ (46,101) (19.4)% Fees and commissions revenue totaled $188.0 million for the third quarter of 2026, decreasing $14.0 million compared to the prior quarter. Brokerage and trading revenue decreased $13.0 million to $19.5 million, primarily driven by an unfavorable rate environment and lower fixed-income trading volumes during the quarter. The nearly 80 basis point increase in the 10-year Treasury yield reduced customer demand for fixed-income products and mortgage-related activity, resulting in lower transaction volumes and trading revenues. Mortgage banking revenue decreased $2.2 million, driven by a decline in mortgage production volume and spreads due to rising mortgage interest rates. Production revenue as a percentage of production volume decreased 77 basis points to 0.06%. Fiduciary and asset management revenue decreased $1.1 million, as the prior quarter benefited from seasonal tax preparation fees. Excluding this seasonal revenue, fiduciary and asset management revenue increased over the prior quarter. Other gains, net, were a net gain of $5.7 million compared to a net gain of $42.4 million in the prior quarter. The second quarter of 2026 included a $30.9 million pre-tax gain, net of economic hedge, related to the exchange of our Visa B shares under the exchange offer by Visa, Inc. The current quarter included a net gain on investments related to deferred compensation of $1.8 million compared to a net gain of $8.8 million in the prior quarter. 3
Page 6
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Operating Expense (Dollars in thousands) Sep. 30, 2026 June 30, 2026 Change % Change Personnel $ 213,251 $ 214,094 $ (843) (0.4)% Business promotion 9,676 11,152 (1,476) (13.2)% Professional fees and services 14,310 13,799 511 3.7 % Net occupancy and equipment 32,960 34,151 (1,191) (3.5)% FDIC and other insurance 6,350 6,183 167 2.7 % Data processing and communications 54,320 51,707 2,613 5.1 % Printing, postage, and supplies 3,888 3,745 143 3.8 % Amortization of intangible assets 2,311 2,390 (79) (3.3)% Mortgage banking costs 10,664 11,879 (1,215) (10.2)% Other expense 12,931 12,579 352 2.8 % Total operating expense $ 360,661 $ 361,679 $ (1,018) (0.3)% Total operating expense remained stable at $360.7 million for the third quarter of 2026. The third quarter included $1.7 million of deferred compensation expense offset by gains on related investments in Other gains, net. Excluding the impact of deferred compensation, total operating expense increased $6.4 million. Personnel costs increased $6.5 million excluding the impact of deferred compensation. Regular compensation expense increased $3.2 million, primarily reflecting investments in talent, including the addition of revenue-producing personnel. Cash- based incentive compensation increased $1.2 million due to strong loan production during the quarter. Employee benefits expense increased $1.1 million, driven by higher employee healthcare costs, partially offset by a seasonal decrease in payroll taxes. Non-personnel expense was consistent with the prior quarter. A $2.6 million increase in data processing and communications expense, primarily driven by higher software costs, was fully offset by decreases in business promotion expense and net occupancy and equipment costs. Mortgage banking costs decreased $1.2 million due to lower loan payoff activity during the quarter. 4
Page 7
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Loans (Dollars in thousands) Sep. 30, 2026 June 30, 2026 Change % Change Commercial: Services $ 4,071,262 $ 4,099,879 $ (28,617) (0.7)% Healthcare 4,025,188 4,083,814 (58,626) (1.4)% Energy 3,316,625 3,052,662 263,963 8.6% Mortgage finance 588,956 451,826 137,130 30.4% General business 4,653,214 4,609,267 43,947 1.0% Total commercial 16,655,245 16,297,448 357,797 2.2% Commercial real estate: Multifamily 2,550,096 2,570,246 (20,150) (0.8)% Industrial 1,448,975 1,283,315 165,660 12.9% Office 840,859 852,721 (11,862) (1.4)% Retail 706,760 670,893 35,867 5.3% Residential construction and land development 112,124 111,668 456 0.4% Other commercial real estate 474,481 396,487 77,994 19.7% Total commercial real estate 6,133,295 5,885,330 247,965 4.2% Loans to individuals: Residential mortgage 2,860,238 2,847,768 12,470 0.4% Residential mortgage guaranteed by U.S. government agencies 161,171 159,886 1,285 0.8% Personal 1,919,555 1,893,283 26,272 1.4% Total loans to individuals 4,940,964 4,900,937 40,027 0.8% Total loans $ 27,729,504 $ 27,083,715 $ 645,789 2.4% Outstanding loans were $27.7 billion at September 30, 2026, a $646 million increase over June 30, 2026, led by energy loans, commercial real estate loans secured by industrial facilities, and mortgage finance loans. Unfunded loan commitments were $16.6 billion at September 30, 2026, consistent with the prior quarter. Outstanding commercial loan balances, which include services, healthcare, energy, mortgage finance, and general business loans, increased $358 million over the prior quarter. Energy loan balances grew by $264 million to $3.3 billion, or 12% of total loans. The majority of this portfolio is first lien, senior secured, reserve-based lending to oil and gas producers, which we believe is the lowest risk form of energy lending. Approximately 72% of committed production loans are secured by properties primarily producing oil. The remaining 28% are secured by properties primarily producing natural gas. Unfunded energy loan commitments were $4.3 billion at September 30, 2026, a $273 million decrease compared to June 30, 2026. The Company launched the residential mortgage finance line of business in the third quarter of 2025, and these loan balances increased by $137 million during the current quarter to $589 million, or 2% of total loans. Mortgage finance loans primarily consist of warehouse lending facilities to Independent Mortgage Bankers to fund residential mortgages. General business loans increased $44 million to $4.7 billion, or 17% of total loans. General business loans consist of $3.0 billion of wholesale/retail loans and $1.6 billion of loans from other commercial industries. Services sector loan balances decreased $29 million compared to the prior quarter and totaled $4.1 billion, or 15% of total loans. Services sector loans consist of a large number of loans to a variety of businesses, including state and local municipal government entities, Native American tribal government and casino operations, foundations and not-for-profit organizations, educational services, and specialty trade contractors. 5
Page 9
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Healthcare sector loan balances decreased $59 million and totaled $4.0 billion, or 15% of total loans. Our healthcare sector loans primarily consist of $3.1 billion of loans for the development and operation of senior housing and care facilities, including independent living, assisted living, and skilled nursing. Generally, we loan to borrowers with a portfolio of multiple facilities, which serves to help diversify risks specific to a single facility. Commercial real estate loan balances increased $248 million to $6.1 billion, representing 22% of total loans. Loans secured by industrial facilities increased $166 million, other real estate loans increased $78 million, and loans secured by retail facilities increased $36 million. Loans secured by multifamily residential properties decreased $20 million and loans secured by office facilities decreased $12 million to $841 million. Unfunded commercial real estate loan commitments were $2.4 billion at September 30, 2026, a $105 million increase over June 30, 2026. We take a disciplined approach to managing our concentration of commercial real estate loan commitments as a percentage of capital. Loans to individuals increased $40 million to $4.9 billion and represented 18% of total loans. Personal loans increased by $26 million and residential mortgage loans increased $14 million. Personal loans consist primarily of loans to Wealth Management clients secured by the cash surrender value of insurance policies or marketable securities. Personal loans also include direct loans secured by and for the purchase of automobiles, recreational and marine equipment, as well as unsecured loans. Period End & Average Deposits (Dollars in thousands) Sep. 30, 2026 June 30, 2026 Change % Change Period end deposits Demand $ 7,839,541 $ 7,861,661 $ (22,120) (0.3)% Interest-bearing transaction 26,892,362 27,242,418 (350,056) (1.3)% Savings 896,472 900,480 (4,008) (0.4)% Time 3,903,004 3,851,282 51,722 1.3 % Total deposits $ 39,531,379 $ 39,855,841 $ (324,462) (0.8)% Average deposits Demand $ 7,709,027 $ 7,682,623 $ 26,404 0.3 % Interest-bearing transaction 27,036,654 26,826,903 209,751 0.8 % Savings 897,005 902,531 (5,526) (0.6)% Time 3,891,451 3,818,067 73,384 1.9 % Total average deposits $ 39,534,137 $ 39,230,124 $ 304,013 0.8 % Our funding sources, which primarily include deposits and wholesale borrowings, provide adequate liquidity to meet our needs. The loan to deposit ratio was 70% at September 30, 2026, compared to 68% at June 30, 2026, providing significant on- balance sheet liquidity to meet future loan demand and contractual obligations. Period end deposits totaled $39.5 billion at September 30, 2026, a $324 million decrease. Interest-bearing transaction accounts decreased $350 million, demand deposits decreased $22 million, and time deposits increased $52 million. Average deposits were $39.5 billion during the third quarter, a $304 million increase. Average interest-bearing transaction accounts increased $210 million, average time deposits increased $73 million, and average demand deposits increased $26 million. Average Commercial Banking deposits increased $162 million to $19.1 billion, or 48% of total deposits. Our commercial deposit portfolio is highly diversified across industries and customers. The highest concentration by industry within our commercial deposit portfolio is with our energy customers representing 9% of our total deposits. Average Consumer Banking deposits increased $42 million to $8.6 billion, or 22% of total deposits. Average Wealth Management deposits increased by $102 million to $10.8 billion, or 27% of total deposits. Average Funds Management and Other deposits were largely unchanged at $1.1 billion, or 3% of total deposits. 6
Page 10
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Capital Minimum Capital Requirement Capital Conservation Buffer Minimum Capital Requirement Including Capital Conservation Buffer Sep. 30, 2026 June 30, 2026 Common equity Tier 1 4.50 % 2.50 % 7.00 % 12.73 % 12.89 % Tier 1 capital 6.00 % 2.50 % 8.50 % 12.73 % 12.89 % Total capital 8.00 % 2.50 % 10.50 % 14.43 % 14.67 % Tier 1 leverage 4.00 % N/A 4.00 % 9.95 % 9.81 % Tangible common equity ratio 9.16 % 9.61 % Common stock repurchased (shares) — 2,519 Average price per share repurchased $ — $ 129.89 The company's common equity Tier 1 capital ratio was 12.73% at September 30, 2026. In addition, the company's Tier 1 capital ratio was 12.73%, total capital ratio was 14.43%, and leverage ratio was 9.95% at September 30, 2026. At June 30, 2026, the company's common equity Tier 1 capital ratio was 12.89%, Tier 1 capital ratio was 12.89%, total capital ratio was 14.67%, and leverage ratio was 9.81%. The company's tangible common equity ratio , a non-GAAP measure, was 9.16% at September 30, 2026, and 9.61% at June 30, 2026. The tangible common equity ratio is primarily based on total shareholders' equity, which includes unrealized gains and losses on available-for-sale securities. No shares of common stock were repurchased during the third quarter of 2026. The company repurchased 2,519 shares of common stock at an average price of $129.89 per share in the second quarter of 2026. We view buybacks opportunistically, but within the context of maintaining our strong capital position. Credit Quality Nonperforming assets totaled $67 million, or 0.24% of outstanding loans and repossessed assets, at September 30, 2026, compared to $63 million, or 0.23%, at June 30, 2026. Excluding loans guaranteed by U.S. government agencies, nonperforming assets totaled $58 million, or 0.21% of outstanding loans and repossessed assets, at September 30, 2026, compared to $55 million, or 0.20%, at June 30, 2026. Nonaccruing loans increased $4.1 million compared to June 30, 2026. New nonaccruing loans identified in the third quarter totaled $12 million, offset by $4.7 million in payments received, $1.7 million in charge-offs, and $1.2 million in loans that returned to accrual status. Nonaccruing healthcare loans increased $4.0 million and nonaccruing loans to individuals increased $1.6 million, while nonaccruing general business loans decreased $1.3 million. Net charge-offs were $886 thousand, or 0.01% of average loans on an annualized basis, in the third quarter. At September 30, 2026, net charge-offs for the trailing twelve months were $4.7 million, or 0.02% of average loans. Net charge-offs were $500 thousand, or 0.01% of average loans on an annualized basis, in the second quarter of 2026. No provision for expected credit losses was necessary for the third quarter of 2026. An improvement in economic forecast assumptions, primarily GDP growth and lower unemployment, compared to the prior quarter was offset by the impact of loan growth during the quarter. At September 30, 2026, the combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments was $322 million, or 1.16% of outstanding loans and 555% of nonaccruing loans, excluding residential mortgage loans guaranteed by U.S. government agencies. At June 30, 2026, the combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments was $323 million, or 1.19% of outstanding loans and 592% of nonaccruing loans, excluding residential mortgage loans guaranteed by U.S. government agencies. 1 1 See Explanation and Reconciliation of Non-GAAP Measures - Unaudited section following. 7 1
Page 11
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Securities & Derivatives The fair value of the available-for-sale securities portfolio totaled $13.9 billion at September 30, 2026, a $277 million increase compared to June 30, 2026. At September 30, 2026, the available-for-sale securities portfolio consisted primarily of $10.5 billion of residential mortgage-backed securities fully backed by U.S. government agencies and $2.5 billion of commercial mortgage-backed securities fully backed by U.S. government agencies. At September 30, 2026, the available-for-sale securities portfolio had a net unrealized loss of $650 million, compared to $256 million at June 30, 2026. We hold an inventory of trading securities in support of sales to a variety of customers. At September 30, 2026, the trading securities portfolio totaled $4.1 billion, compared to $5.0 billion at June 30, 2026. Derivative contracts are carried at fair value. At September 30, 2026, the net fair values of derivative contracts, before consideration of cash margin, reported as assets under our customer risk management programs totaled $910 million, compared to $445 million at June 30, 2026. The aggregate net fair value of derivative contracts, before consideration of cash margin, held under these programs reported as liabilities totaled $882 million at September 30, 2026, and $433 million at June 30, 2026. The company also maintains a portfolio of residential mortgage-backed and commercial mortgage-backed securities issued by U.S. government agencies and interest rate derivative contracts as an economic hedge of the changes in the fair value of our mortgage servicing rights. This portfolio of fair value option securities decreased $1.5 million to $27 million at September 30, 2026. The net cost of the changes in the fair value of mortgage servicing rights and related economic hedges was $887 thousand during the third quarter of 2026, including a $19.1 million decrease in the fair value of securities and derivative contracts held as an economic hedge, an $18.3 million increase in the fair value of mortgage servicing rights, and $3 thousand of related net interest expense. Third Quarter 2026 Segment Highlights Commercial Banking Consumer Banking Wealth Management (In thousands) Sep. 30, 2026 June 30, 2026 Sep. 30, 2026 June 30, 2026 Sep. 30, 2026 June 30, 2026 Net interest income and fee revenue $ 241,184 $ 240,406 $ 95,784 $ 95,759 $ 141,148 $ 146,459 Net loans charged-off (recovered) 1,474 (145) 1,302 1,118 (25) (5) Personnel expense 51,155 50,042 26,136 24,715 68,260 66,332 Non-personnel expense 32,426 32,049 38,206 38,721 27,408 27,866 Net income before taxes 140,712 146,160 14,468 13,555 28,846 34,977 Average loans $ 22,357,163 $ 22,003,116 $ 2,675,121 $ 2,633,853 $ 2,562,344 $ 2,479,191 Average deposits 19,080,487 18,918,188 8,635,318 8,592,876 10,757,766 10,656,194 Assets under management or administration $129,333,432 $ 129,271,398 Commercial Banking contributed $140.7 million to net income before taxes in the third quarter of 2026, a decrease of $5.4 million compared to the second quarter of 2026. Combined net interest income and fee revenue totaled $241.2 million, consistent with the prior quarter. Net interest income increased $2.9 million due to increased loan volumes. Investment banking revenue decreased $4.3 million due to lower loan syndication fees. Other operating expense increased $1.5 million, primarily reflecting investments in talent, including the addition of revenue-producing personnel during the quarter. Other gains, net, were $1.9 million for the third quarter of 2026, compared to $4.3 million in the second quarter of 2026 from merchant banking activities. Average loans increased $354 million, or 2%, to $22.4 billion. Average deposits remained stable at $19.1 billion. 8
Page 12
BOK Financial Corporation quarterly earnings release Exhibit 99.1(a) Consumer Banking contributed $14.5 million to net income before taxes in the third quarter of 2026, largely unchanged from the prior quarter. Combined net interest income and fee revenue totaled $95.8 million, consistent with the prior quarter. Personnel expense increased $1.4 million which was fully offset by lower corporate expense allocations. Average loans increased $41 million, or 2%, to $2.7 billion. Average deposits were largely unchanged at $8.6 billion. Wealth Management contributed $28.8 million to net income before taxes in the third quarter of 2026, a decrease of $6.1 million compared to the second quarter of 2026. Combined net interest income and fee revenue decreased $5.3 million. Total revenue from trading activities decreased $9.9 million reflecting an unfavorable rate environment and lower fixed-income trading volumes during the quarter. Investment banking revenue increased $5.2 million due to higher municipal underwriting and financial advisory fees. Other operating expense increased $1.5 million, primarily due to higher cash-based incentive compensation costs, reflecting stronger underwriting activity during the quarter. Average loans increased $83 million, or 3%, to $2.6 billion. Average deposits were largely unchanged at $10.8 billion. Assets under management or administration remained stable at $129.3 billion. Conference Call & Webcast The company will host a conference call at noon Central time on Tuesday, October 20, 2026, to discuss the financial results with investors. The live audio webcast and presentation slides will be available on the company’s website at bokf.com. The conference call can also be accessed by dialing 1-833-461-5787 toll free, or 1-585-542-9983, meeting ID: 717 984 566. A webcast replay will also be available shortly after the conclusion of the live call at bokf.com or by dialing 1-833-309-1852 and referencing replay meeting ID: 717 984 566. About BOK Financial Corporation BOK Financial Corporation is a $54 billion regional financial services company headquartered in Tulsa, Oklahoma with $129 billion in assets under management or administration. The company's stock is publicly traded on NASDAQ under the Global Select market listings (BOKF). BOK Financial Corporation's holdings include BOKF, NA; BOK Financial Securities, Inc.; and BOK Financial Private Wealth, Inc. BOKF, NA's holdings include TransFund and Cavanal Hill Investment Management, Inc. BOKF, NA operates banking divisions across eight states as: Bank of Albuquerque; Bank of Oklahoma; Bank of Texas; and BOK Financial in Arizona, Arkansas, Colorado, Kansas and Missouri; as well as having limited purpose offices in Connecticut, Nebraska, Tennessee, and Wisconsin. Through its subsidiaries, BOK Financial Corporation provides commercial and consumer banking, brokerage trading, investment and trust services, mortgage origination and servicing, and an electronic funds transfer network. For more information, visit www.bokf.com. The company will continue to evaluate critical assumptions and estimates, such as the appropriateness of the allowance for credit losses and asset impairment as of September 30, 2026 through the date its financial statements are filed with the Securities and Exchange Commission and will adjust amounts reported if necessary. This news release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are based on management's beliefs, assumptions, current expectations, estimates and projections about BOK Financial Corporation, the financial services industry and the economy generally. Words such as “anticipates,” “believes,” “estimates,” “expects,” “forecasts,” “plans,” “outlook,” “projects,” “will,” “intends,” “may,” “could,” “should,” “would,” “potential,” “continue,” “seek,” “target,” variations of such words and similar expressions are intended to identify such forward-looking statements. Management judgments relating to and discussion of the provision and allowance for credit losses, allowance for uncertain tax positions, accruals for loss contingencies and valuation of mortgage servicing rights involve judgments as to expected events and are inherently forward-looking statements. Assessments that acquisitions and growth endeavors will be profitable are statements of belief as to the outcome of future events based in part on information provided by others which BOK Financial has not independently verified and for which BOK Financial assumes no responsibility for the accuracy or completeness. These various forward-looking statements are not guarantees of future performance and involve certain risks, uncertainties, and assumptions which are difficult to predict with regard to timing, extent, likelihood and degree of occurrence. All statements other than statements of historical fact are forward-looking statements. Therefore, actual results and outcomes may materially differ from what is expected, implied or forecasted in such forward-looking statements. Internal and external factors that might cause such a difference include, but are not limited to: changes in government; changes in governmental economic policy, including tariffs; changes in commodity prices; interest rates and interest rate relationships; inflation; demand for products and services; the degree of competition by traditional and nontraditional competitors; changes in banking regulations; tax laws; prices, levies and assessments; the impact of technological advances; trends in customer behavior as well as their ability to repay loans; credit quality deterioration; cybersecurity incidents and data breaches; operational failures or interruptions; liquidity risks; capital adequacy requirements; litigation and regulatory enforcement actions; and other risks detailed in BOK Financial Corporation’s filings with the Securities and Exchange Commission. BOK Financial Corporation and its affiliates undertake no obligation to update, amend or clarify forward-looking statements, whether as a result of new information, future events, or otherwise. 9
Page 13
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) BALANCE SHEETS – UNAUDITED BOK FINANCIAL CORPORATION
Page 14
(In thousands) Sep 30, 2026 June 30, 2026 Assets Cash and due from banks $ 878,300 $ 975,769 Interest-bearing cash and cash equivalents 387,089 545,597 Trading securities 4,056,856 4,952,988 Investment securities, net of allowance 1,567,688 1,627,281 Available-for-sale securities 13,859,871 13,582,780 Fair value option securities 26,959 28,461 Restricted equity securities 334,911 298,418 Residential mortgage loans held for sale 82,884 102,531 Loans: Commercial 16,655,245 16,297,448 Commercial real estate 6,133,295 5,885,330 Loans to individuals 4,940,964 4,900,937 Total loans 27,729,504 27,083,715 Allowance for loan losses (272,565) (277,474) Loans, net of allowance 27,456,939 26,806,241 Premises and equipment, net 612,261 651,641 Receivables 278,319 292,415 Goodwill 1,044,749 1,044,749 Intangible assets, net 15,961 29,828 Mortgage servicing rights 346,586 333,998 Real estate and other repossessed assets, net of allowance 303 508 Derivative contracts, net 864,125 324,711 Cash surrender value of bank-owned life insurance 426,282 423,126 Receivable on unsettled securities sales 776,544 39,673 Other assets 1,058,551 1,118,572 Total assets $ 54,075,178 $ 53,179,287 Liabilities Deposits: Demand $ 7,839,541 $ 7,861,661 Interest-bearing transaction 26,892,362 27,242,418 Savings 896,472 900,480 Time 3,903,004 3,851,282 Total deposits 39,531,379 39,855,841 Funds purchased and repurchase agreements 1,838,395 1,503,916 Other borrowings 3,769,253 3,073,995 Subordinated debentures 396,697 396,661 Accrued interest, taxes, and expense 309,229 292,534 Due on unsettled securities purchases 1,327,763 1,155,712 Derivative contracts, net 520,298 325,231 Other liabilities 467,112 490,499 Total liabilities 48,160,126 47,094,389 Shareholders' equity Capital, surplus, and retained earnings 6,458,944 6,332,631 Accumulated other comprehensive loss (544,453) (249,525) Total shareholders’ equity 5,914,491 6,083,106 Non-controlling interests 561 1,792 Total equity 5,915,052 6,084,898 Total liabilities and equity $ 54,075,178 $ 53,179,287
Page 15
10
Page 16
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) AVERAGE BALANCE SHEETS – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended (In thousands) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Assets Interest-bearing cash and cash equivalents $ 534,863 $ 550,518 $ 577,641 $ 546,045 $ 495,091 Trading securities 5,908,204 5,876,732 5,617,531 5,295,598 5,603,200 Investment securities, net of allowance 1,591,744 1,676,175 1,747,860 1,804,984 1,861,565 Available-for-sale securities 13,854,420 13,554,693 13,614,473 13,564,939 13,386,515 Fair value option securities 27,833 71,064 126,772 72,229 105,651 Restricted equity securities 439,155 461,753 361,514 250,430 337,055 Residential mortgage loans held for sale 92,731 93,685 77,105 91,414 91,422 Loans: Commercial 16,374,803 16,015,484 15,430,740 15,037,471 14,490,145 Commercial real estate 5,972,277 5,914,630 5,779,715 5,581,588 5,743,572 Loans to individuals 4,890,623 4,839,524 4,715,130 4,623,492 4,592,422 Total loans 27,237,703 26,769,638 25,925,585 25,242,551 24,826,139 Allowance for loan losses (276,455) (277,546) (276,437) (277,580) (277,398) Loans, net of allowance 26,961,248 26,492,092 25,649,148 24,964,971 24,548,741 Total earning assets 49,410,198 48,776,712 47,772,044 46,590,610 46,429,240 Cash and due from banks 1,033,468 979,068 963,980 988,135 960,602 Derivative contracts, net 580,254 662,250 421,256 268,675 317,732 Cash surrender value of bank-owned life insurance 424,214 422,700 422,540 420,167 417,261 Receivable on unsettled securities sales 223,492 196,521 173,506 227,678 162,035 Other assets 3,410,011 3,520,847 3,369,683 3,357,081 3,405,206 Total assets $ 55,081,637 $ 54,558,098 $ 53,123,009 $ 51,852,346 $ 51,692,076 Liabilities Deposits: Demand $ 7,709,027 $ 7,682,623 $ 7,693,948 $ 8,009,082 $ 7,894,847 Interest-bearing transaction 27,036,654 26,826,903 26,707,581 27,396,541 26,076,475 Savings 897,005 902,531 877,650 852,390 867,939 Time 3,891,451 3,818,067 3,701,080 3,729,596 3,641,985 Total deposits 39,534,137 39,230,124 38,980,259 39,987,609 38,481,246 Funds purchased and repurchase agreements 375,717 520,881 924,228 1,185,566 873,800 Other borrowings 7,163,522 6,922,451 5,349,061 3,008,388 5,048,301 Subordinated debentures 396,678 396,642 396,606 241,482 — Derivative contracts, net 386,728 291,598 302,403 317,206 332,893 Due on unsettled securities purchases 516,586 494,740 418,478 452,673 329,361 Other liabilities 626,273 661,187 727,779 697,979 663,323 Total liabilities 48,999,641 48,517,623 47,098,814 45,890,903 45,728,924 Total equity 6,081,996 6,040,475 6,024,195 5,961,443 5,963,152 Total liabilities and equity $ 55,081,637 $ 54,558,098 $ 53,123,009 $ 51,852,346 $ 51,692,076 11
Page 18
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) STATEMENTS OF EARNINGS – UNAUDITED BOK FINANCIAL CORPORATION
Page 19
Three Months Ended Nine Months Ended September 30, September 30, (In thousands, except share and per share data) 2026 2025 2026 2025 Interest revenue $ 666,351 $ 644,453 $ 1,921,410 $ 1,905,450 Interest expense 296,376 306,807 857,051 923,387 Net interest income 369,975 337,646 1,064,359 982,063 Provision for credit losses — 2,000 — 2,000 Net interest income after provision for credit losses 369,975 335,646 1,064,359 980,063 Other operating revenue: Brokerage and trading revenue 19,451 43,239 95,507 112,432 Transaction card revenue 32,205 29,463 95,767 86,116 Fiduciary and asset management revenue 69,863 63,878 207,351 188,814 Deposit service charges and fees 34,140 31,896 99,684 93,490 Mortgage banking revenue 16,740 19,764 56,688 58,572 Other revenue 15,556 16,190 44,727 46,452 Total fees and commissions 187,955 204,430 599,724 585,876 Other gains, net 5,693 8,264 47,892 15,679 Gain (loss) on derivatives, net (19,282) (453) (32,146) 14,647 Gain (loss) on fair value option securities, net (1,151) 630 (3,225) 2,067 Change in fair value of mortgage servicing rights 18,256 (2,375) 32,711 (14,634) Gain (loss) on available-for-sale securities, net — 213 (4,645) 213 Total other operating revenue 191,471 210,709 640,311 603,848 Other operating expense: Personnel 213,251 226,347 638,519 655,243 Business promotion 9,676 9,960 30,054 27,917 Professional fees and services 14,310 15,137 42,404 43,808 Net occupancy and equipment 32,960 33,040 100,293 98,689 FDIC and other insurance 6,350 7,302 18,218 20,328 FDIC special assessment — (1,209) — (1,209) Data processing and communications 54,320 50,062 157,795 147,237 Printing, postage, and supplies 3,888 4,036 11,312 11,742 Amortization of intangible assets 2,311 2,656 7,144 7,964 Mortgage banking costs 10,664 10,668 34,300 25,068 Other expense 12,931 11,771 36,467 35,015 Total other operating expense 360,661 369,770 1,076,506 1,071,802 Net income before taxes 200,785 176,585 628,164 512,109 Federal and state income taxes 40,910 35,714 135,987 111,397 Net income 159,875 140,871 492,177 400,712 Net income (loss) attributable to non-controlling interests 22 (23) 19 23 Net income attributable to BOK Financial Corporation shareholders $ 159,853 $ 140,894 $ 492,158 $ 400,689 Earnings per share: Basic and diluted $ 2.64 $ 2.22 $ 8.14 $ 6.27 Average shares used in computation: Basic and diluted 60,101,757 62,840,270 60,072,208 63,196,043 12
Page 20
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) QUARTERLY EARNINGS TREND – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended (In thousands, except share and per share data) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Interest revenue $ 666,351 $ 639,134 $ 615,925 $ 625,818 $ 644,453 Interest expense 296,376 287,304 273,371 280,537 306,807 Net interest income 369,975 351,830 342,554 345,281 337,646 Provision for credit losses — — — — 2,000 Net interest income after provision for credit losses 369,975 351,830 342,554 345,281 335,646 Other operating revenue: Brokerage and trading revenue 19,451 32,450 43,606 47,310 43,239 Transaction card revenue 32,205 31,597 31,965 31,564 29,463 Fiduciary and asset management revenue 69,863 71,007 66,481 68,347 63,878 Deposit service charges and fees 34,140 33,326 32,218 32,039 31,896 Mortgage banking revenue 16,740 18,985 20,963 19,013 19,764 Other revenue 15,556 14,627 14,544 16,591 16,190 Total fees and commissions 187,955 201,992 209,777 214,864 204,430 Other gains (losses), net 5,693 42,415 (216) 28,078 8,264 Loss on derivatives, net (19,282) (8,490) (4,374) (2,366) (453) Gain (loss) on fair value option securities, net (1,151) — (2,074) 551 630 Change in fair value of mortgage servicing rights 18,256 6,300 8,155 1,407 (2,375) Gain (loss) on available-for-sale securities, net — (4,645) — 1,748 213 Total other operating revenue 191,471 237,572 211,268 244,282 210,709 Other operating expense: Personnel 213,251 214,094 211,174 222,726 226,347 Business promotion 9,676 11,152 9,226 11,516 9,960 Professional fees and services 14,310 13,799 14,295 18,371 15,137 Net occupancy and equipment 32,960 34,151 33,182 32,693 33,040 FDIC and other insurance 6,350 6,183 5,685 6,078 7,302 FDIC special assessment — — — (9,479) (1,209) Data processing and communications 54,320 51,707 51,768 51,299 50,062 Printing, postage, and supplies 3,888 3,745 3,679 4,077 4,036 Amortization of intangible assets 2,311 2,390 2,443 2,656 2,656 Mortgage banking costs 10,664 11,879 11,757 10,663 10,668 Other expense 12,931 12,579 10,957 10,454 11,771 Total other operating expense 360,661 361,679 354,166 361,054 369,770 Net income before taxes 200,785 227,723 199,656 228,509 176,585 Federal and state income taxes 40,910 51,141 43,936 51,243 35,714 Net income 159,875 176,582 155,720 177,266 140,871 Net income (loss) attributable to non- controlling interests 22 43 (46) (35) (23) Net income attributable to BOK Financial Corporation shareholders $ 159,853 $ 176,539 $ 155,766 $ 177,301 $ 140,894 Earnings per share: Basic and diluted $ 2.64 $ 2.92 $ 2.58 $ 2.89 $ 2.22 Average shares used in computation: Basic and diluted 60,101,757 60,080,833 60,033,282 60,916,929 62,840,270
Page 21
13
Page 22
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) FINANCIAL HIGHLIGHTS – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended (In thousands, except ratio, share, and per share data) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Capital: Period end shareholders' equity $ 5,914,491 $ 6,083,106 $ 5,973,175 $ 5,918,646 $ 6,022,535 Risk-weighted assets $ 42,542,692 $ 40,936,020 $ 40,777,918 $ 38,966,948 $ 38,136,467 Risk-based capital ratios: Common equity Tier 1 12.73 % 12.89 % 12.61 % 12.90 % 13.60 % Tier 1 12.73 % 12.89 % 12.61 % 12.90 % 13.61 % Total capital 14.43 % 14.67 % 14.39 % 14.77 % 14.48 % Leverage ratio 9.95 % 9.81 % 9.85 % 9.86 % 10.19 % Tangible common equity ratio 9.16 % 9.61 % 9.29 % 9.46 % 10.06 % Common stock: Book value per share $ 97.34 $ 100.11 $ 98.31 $ 97.63 $ 95.22 Tangible book value per share $ 79.89 $ 82.42 $ 80.58 $ 79.83 $ 78.11 Market value per share: High $ 146.84 $ 139.73 $ 138.42 $ 122.16 $ 114.17 Low $ 125.96 $ 123.24 $ 113.53 $ 102.72 $ 96.89 Cash dividends paid $ 38,123 $ 38,116 $ 38,118 $ 38,042 $ 36,122 Dividend payout ratio 23.85 % 21.59 % 24.47 % 21.46 % 25.64 % Shares outstanding, net 60,758,773 60,766,867 60,759,992 60,620,507 63,247,676 Stock buy-back program: Shares repurchased — 2,519 — 2,617,414 365,547 Amount $ — $ 327 $ — $ 282,645 $ 40,575 Average price paid per share $ — $ 129.89 $ — $ 107.99 $ 111.00 Performance ratios (quarter annualized): Return on average assets 1.15 % 1.30 % 1.19 % 1.36 % 1.08 % Return on average equity 10.43 % 11.73 % 10.49 % 11.80 % 9.38 % Return on average tangible common equity 12.66 % 14.27 % 12.78 % 14.42 % 11.46 % Net interest margin 3.00 % 2.91 % 2.90 % 2.98 % 2.91 % Efficiency ratio 63.52 % 60.21 % 63.21 % 60.71 % 66.66 % Adjusted efficiency ratio 63.52 % 63.49 % 63.21 % 64.89 % 66.88 % Other data: Tax-equivalent interest $ 2,709 $ 2,719 $ 2,610 $ 2,555 $ 2,565 Net unrealized loss on available-for- sale securities $ (649,774) $ (256,458) $ (216,978) $ (132,566) $ (203,682) 1 2 1 1 1 See Explanation and Reconciliation of Non-GAAP Measures - Unaudited section following. Excludes 1% excise tax on corporate stock repurchases. 14 1 2
Page 23
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) Three Months Ended (In thousands, except ratio, share, and per share data) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Mortgage banking: Mortgage production revenue $ 119 $ 2,174 $ 3,926 $ 1,963 $ 2,370 Mortgage loans funded for sale $ 231,130 $ 280,838 $ 230,858 $ 230,376 $ 229,812 Add: Current period end outstanding commitments 45,385 65,547 83,674 49,048 67,842 Less: Prior period end outstanding commitments 65,547 83,674 49,048 67,842 64,508 Total mortgage production volume $ 210,968 $ 262,711 $ 265,484 $ 211,582 $ 233,146 Mortgage loan refinances to mortgage loans funded for sale 16 % 20 % 30 % 27 % 13 % Realized margin on funded mortgage loans 0.39 % 1.01 % 1.22 % 1.10 % 0.96 % Production revenue as a percentage of production volume 0.06 % 0.83 % 1.48 % 0.93 % 1.02 % Mortgage servicing revenue $ 16,621 $ 16,811 $ 17,037 $ 17,050 $ 17,394 Average outstanding principal balance of mortgage loans serviced for others $ 21,335,683 $ 21,718,909 $ 22,109,450 $ 21,882,238 $ 22,269,300 Average mortgage servicing revenue rates 0.31 % 0.31 % 0.31 % 0.31 % 0.31 % Gain (loss) on mortgage servicing rights, net of economic hedge: Loss on derivatives, net $ (17,989) $ (7,324) $ (4,211) $ (2,651) $ (508) Gain (loss) on fair value option securities, net (1,151) — (2,074) 551 630 Gain (loss) on economic hedge of mortgage servicing rights (19,140) (7,324) (6,285) (2,100) 122 Change in fair value of mortgage servicing rights 18,256 6,300 8,155 1,407 (2,375) Gain (loss) on changes in fair value of mortgage servicing rights, net of economic hedges, included in other operating revenue (884) (1,024) 1,870 (693) (2,253) Net interest income (expense) on fair value option securities (3) 110 86 114 169 Total economic benefit (cost) of changes in the fair value of mortgage servicing rights, net of economic hedges $ (887) $ (914) $ 1,956 $ (579) $ (2,084) 3 Actual interest earned on fair value option securities less internal transfer-priced cost of funds. 153
Page 24
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) EXPLANATION AND RECONCILIATION OF NON-GAAP MEASURES – UNAUDITED BOK FINANCIAL CORPORATION
Page 25
Three Months Ended (In thousands, except ratio and per share data) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Reconciliation of tangible common equity ratio: Total shareholders' equity $ 5,914,491 $ 6,083,106 $ 5,973,175 $ 5,918,646 $ 6,022,535 Less: Goodwill and intangible assets, net 1,060,710 1,074,577 1,077,052 1,079,501 1,082,125 Tangible common equity $ 4,853,781 $ 5,008,529 $ 4,896,123 $ 4,839,145 $ 4,940,410 Total assets $ 54,075,178 $ 53,179,287 $ 53,760,405 $ 52,237,501 $ 50,193,387 Less: Goodwill and intangible assets, net 1,060,710 1,074,577 1,077,052 1,079,501 1,082,125 Tangible assets $ 53,014,468 $ 52,104,710 $ 52,683,353 $ 51,158,000 $ 49,111,262 Tangible common equity ratio 9.16 % 9.61 % 9.29 % 9.46 % 10.06 % Reconciliation of return on average tangible common equity: Total average shareholders' equity $ 6,080,564 $ 6,038,651 $ 6,022,247 $ 5,959,186 $ 5,960,711 Less: Average goodwill and intangible assets, net 1,069,452 1,075,733 1,078,240 1,080,758 1,083,390 Average tangible common equity $ 5,011,112 $ 4,962,918 $ 4,944,007 $ 4,878,428 $ 4,877,321 Net income attributable to BOK Financial Corporation shareholders $ 159,853 $ 176,539 $ 155,766 $ 177,301 $ 140,894 Return on average tangible common equity 12.66 % 14.27 % 12.78 % 14.42 % 11.46 % Calculation of efficiency ratio and adjusted efficiency ratio: Total other operating expense $ 360,661 $ 361,679 $ 354,166 $ 361,054 $ 369,770 Less: Amortization of intangible assets 2,311 2,390 2,443 2,656 2,656 Numerator for efficiency ratio $ 358,350 $ 359,289 $ 351,723 $ 358,398 $ 367,114 Less: FDIC special assessment benefit — — — (9,479) (1,209) Numerator for adjusted efficiency ratio $ 358,350 $ 359,289 $ 351,723 $ 367,877 $ 368,323 Net interest income $ 369,975 $ 351,830 $ 342,554 $ 345,281 $ 337,646 Add: Tax-equivalent adjustment 2,709 2,719 2,610 2,555 2,565 Tax-equivalent net interest income 372,684 354,549 345,164 347,836 340,211 Add: Total other operating revenue 191,471 237,572 211,268 244,282 210,709 Less: Gain (loss) on available-for-sale securities, net — (4,645) — 1,748 213 Denominator for efficiency ratio $ 564,155 $ 596,766 $ 556,432 $ 590,370 $ 550,707 Less: Gain on sale of merchant banking investment — — — 23,475 — Less: Gain on exchange of Visa shares — 30,908 — — — Denominator for adjusted efficiency ratio $ 564,155 $ 565,858 $ 556,432 $ 566,895 $ 550,707 Efficiency ratio 63.52 % 60.21 % 63.21 % 60.71 % 66.66 % Adjusted efficiency ratio 63.52 % 63.49 % 63.21 % 64.89 % 66.88 % Reconciliation of pre-provision net revenue: Net income before taxes $ 200,785 $ 227,723 $ 199,656 $ 228,509 $ 176,585 Add: Provision for credit losses — — — — 2,000 Less: Net income (loss) attributable to non-controlling interests 22 43 (46) (35) (23) Pre-provision net revenue $ 200,763 $ 227,680 $ 199,702 $ 228,544 $ 178,608
Page 26
16
Page 27
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) Three Months Ended (In thousands, except ratio and per share data) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Information on net interest income and net interest margin excluding trading activities: Net interest income $ 369,975 $ 351,830 $ 342,554 $ 345,281 $ 337,646 Less: Trading activities net interest income 21,337 18,283 15,366 13,211 14,325 Net interest income excluding trading activities 348,638 333,547 327,188 332,070 323,321 Add: Tax-equivalent adjustment 2,709 2,719 2,610 2,555 2,565 Tax-equivalent net interest income excluding trading activities $ 351,347 $ 336,266 $ 329,798 $ 334,625 $ 325,886 Average interest-earning assets $ 49,410,198 $ 48,776,712 $ 47,772,044 $ 46,590,610 $ 46,429,240 Less: Average trading activities interest-earning assets 5,908,204 5,876,732 5,617,531 5,295,598 5,603,200 Average interest-earning assets excluding trading activities $ 43,501,994 $ 42,899,980 $ 42,154,513 $ 41,295,012 $ 40,826,040 Net interest margin on average interest- earning assets 3.00 % 2.91 % 2.90 % 2.98 % 2.91 % Net interest margin on average trading activities interest-earning assets 1.47 % 1.25 % 1.05 % 1.04 % 1.07 % Net interest margin on average interest- earning assets excluding trading activities 3.21 % 3.13 % 3.15 % 3.22 % 3.16 % Reconciliation of adjusted net income and earnings per share: Net income attributable to BOK Financial Corporation shareholders $ 159,853 $ 176,539 $ 155,766 $ 177,301 $ 140,894 Impact of FDIC special assessment benefit, net of tax — — — (7,239) (923) Gain on exchange of Visa shares, net of tax — (23,604) — — — Loss on repositioning of available-for- sale securities portfolio, net of tax — 3,547 — — — Gain on sale of merchant banking investment, net of tax — — — (17,928) — Adjusted net income $ 159,853 $ 156,482 $ 155,766 $ 152,134 $ 139,971 Earnings per share $ 2.64 $ 2.92 $ 2.58 $ 2.89 $ 2.22 Impact of FDIC special assessment benefit, net of tax — — — (0.12) (0.01) Gain on exchange of Visa shares, net of tax — (0.39) — — — Loss on repositioning of available-for- sale securities portfolio, net of tax — 0.06 — — — Gain on sale of merchant banking investment, net of tax — — — (0.29) — Adjusted earnings per share $ 2.64 $ 2.59 $ 2.58 $ 2.48 $ 2.21 17
Page 28
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) Explanation of Non-GAAP Measures The tangible common equity ratio and return on average tangible common equity are primarily based on total shareholders' equity, which includes unrealized gains and losses on available-for-sale securities, less intangible assets and equity that do not benefit common shareholders. These measures are valuable indicators of a financial institution's capital strength since they eliminate intangible assets from shareholders' equity and retain the effect of unrealized losses on securities and other components of accumulated other comprehensive income in shareholders' equity. The efficiency ratio and adjusted efficiency ratio measure the company's ability to use its assets and manage its liabilities effectively in the current period. Pre-provision net revenue is a measure of revenue less expenses and is calculated before provision for credit losses and income tax expense. This financial measure is frequently used by investors and analysts and enables them to assess a company's ability to generate earnings to cover credit losses through a credit cycle. It also provides an additional basis for comparing the results of operations between periods by isolating the impact of the provision for credit losses, which can vary significantly between periods. Net interest income and net interest margin excluding trading activities removes the effect of trading activities on these metrics allowing management and investors to assess the performance of the company's core lending and deposit activities without the associated volatility from trading activities. We believe adjusting net income and earnings per share for notable non-core items enhances comparability of results with prior periods, demonstrates the impact of significant items, and provides a useful measure for determining the company's expenses that are core to our business operations and are expected to recur over time. 18
Page 29
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) LOANS TREND – UNAUDITED BOK FINANCIAL CORPORATION (In thousands) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Commercial: Services $ 4,071,262 $ 4,099,879 $ 3,901,933 $ 3,911,917 $ 3,710,643 Healthcare 4,025,188 4,083,814 3,955,763 4,008,208 3,878,543 Energy 3,316,625 3,052,662 3,005,693 2,882,242 2,681,512 Mortgage finance 588,956 451,826 228,242 177,765 84,271 General business 4,653,214 4,609,267 4,481,452 4,300,935 4,157,971 Total commercial 16,655,245 16,297,448 15,573,083 15,281,067 14,512,940 Commercial real estate: Multifamily 2,550,096 2,570,246 2,553,709 2,432,330 2,500,323 Industrial 1,448,975 1,283,315 1,418,626 1,368,436 1,396,795 Office 840,859 852,721 821,569 814,139 811,601 Retail 706,760 670,893 613,976 573,451 593,835 Residential construction and land development 112,124 111,668 109,480 129,783 122,033 Other commercial real estate 474,481 396,487 367,319 353,867 328,020 Total commercial real estate 6,133,295 5,885,330 5,884,679 5,672,006 5,752,607 Loans to individuals: Residential mortgage 2,860,238 2,847,768 2,784,134 2,731,415 2,676,366 Residential mortgage guaranteed by U.S. government agencies 161,171 159,886 160,254 158,359 151,642 Personal 1,919,555 1,893,283 1,785,243 1,808,615 1,771,639 Total loans to individuals 4,940,964 4,900,937 4,729,631 4,698,389 4,599,647 Total loans $ 27,729,504 $ 27,083,715 $ 26,187,393 $ 25,651,462 $ 24,865,194 19
Page 30
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) LOANS MANAGED BY PRINCIPAL MARKET AREA – UNAUDITED BOK FINANCIAL CORPORATION (In thousands) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Texas: Commercial $ 7,661,864 $ 7,628,676 $ 7,489,036 $ 7,383,319 $ 6,800,577 Commercial real estate 2,212,490 2,063,517 2,149,123 2,057,016 2,107,335 Loans to individuals 1,086,029 1,090,244 1,077,386 1,066,827 1,037,831 Total Texas 10,960,383 10,782,437 10,715,545 10,507,162 9,945,743 Oklahoma: Commercial 4,860,306 4,528,261 3,907,911 3,829,109 3,692,319 Commercial real estate 729,858 656,369 612,981 589,709 574,126 Loans to individuals 3,210,216 3,161,854 3,065,886 3,005,460 2,927,185 Total Oklahoma 8,800,380 8,346,484 7,586,778 7,424,278 7,193,630 Arizona: Commercial 1,376,604 1,344,873 1,378,256 1,253,824 1,228,593 Commercial real estate 1,514,202 1,445,762 1,448,141 1,332,658 1,348,838 Loans to individuals 224,825 219,062 220,116 224,354 222,963 Total Arizona 3,115,631 3,009,697 3,046,513 2,810,836 2,800,394 Colorado: Commercial 2,042,394 2,071,731 2,125,660 2,127,979 2,132,770 Commercial real estate 571,127 590,820 596,517 600,668 589,307 Loans to individuals 183,767 191,015 191,721 200,378 208,323 Total Colorado 2,797,288 2,853,566 2,913,898 2,929,025 2,930,400 Kansas/Missouri: Commercial 343,240 337,120 291,075 282,189 270,068 Commercial real estate 517,797 529,988 537,709 571,331 618,052 Loans to individuals 182,004 182,925 117,617 142,392 142,408 Total Kansas/Missouri 1,043,041 1,050,033 946,401 995,912 1,030,528 New Mexico: Commercial 305,757 310,768 308,712 311,636 282,479 Commercial real estate 527,230 538,269 484,623 465,228 458,720 Loans to individuals 46,242 47,787 48,099 49,589 51,056 Total New Mexico 879,229 896,824 841,434 826,453 792,255 Arkansas: Commercial 65,080 76,019 72,433 93,011 106,134 Commercial real estate 60,591 60,605 55,585 55,396 56,229 Loans to individuals 7,881 8,050 8,806 9,389 9,881 Total Arkansas 133,552 144,674 136,824 157,796 172,244 Total BOK Financial $ 27,729,504 $ 27,083,715 $ 26,187,393 $ 25,651,462 $ 24,865,194 Loans attributed to a principal market may not always represent the location of the borrower or the collateral. 20
Page 31
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) DEPOSITS BY PRINCIPAL MARKET AREA – UNAUDITED BOK FINANCIAL CORPORATION (In thousands) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Oklahoma: Demand $ 3,527,086 $ 3,482,203 $ 3,463,094 $ 3,492,243 $ 3,520,203 Interest-bearing: Transaction 13,079,586 13,623,048 13,629,679 13,732,961 13,352,070 Savings 563,986 563,466 561,079 532,284 520,995 Time 2,388,448 2,371,623 2,245,523 2,232,078 2,356,945 Total interest-bearing 16,032,020 16,558,137 16,436,281 16,497,323 16,230,010 Total Oklahoma 19,559,106 20,040,340 19,899,375 19,989,566 19,750,213 Texas: Demand 2,209,001 2,178,864 2,071,766 2,177,256 2,194,177 Interest-bearing: Transaction 7,653,569 7,167,229 6,447,755 6,691,395 6,427,135 Savings 146,584 148,701 153,501 149,593 147,560 Time 701,037 673,126 676,876 647,158 649,757 Total interest-bearing 8,501,190 7,989,056 7,278,132 7,488,146 7,224,452 Total Texas 10,710,191 10,167,920 9,349,898 9,665,402 9,418,629 Colorado: Demand 862,461 977,110 881,440 1,152,203 929,383 Interest-bearing: Transaction 1,998,927 2,210,988 2,072,825 2,137,579 2,204,899 Savings 58,749 56,735 58,605 54,809 53,768 Time 296,655 293,325 299,196 282,320 284,962 Total interest-bearing 2,354,331 2,561,048 2,430,626 2,474,708 2,543,629 Total Colorado 3,216,792 3,538,158 3,312,066 3,626,911 3,473,012 New Mexico: Demand 612,267 599,831 580,900 580,400 591,330 Interest-bearing: Transaction 1,393,257 1,596,275 1,447,506 1,405,940 1,376,694 Savings 101,591 102,306 99,848 95,630 94,180 Time 398,750 386,946 374,661 354,757 347,227 Total interest-bearing 1,893,598 2,085,527 1,922,015 1,856,327 1,818,101 Total New Mexico 2,505,865 2,685,358 2,502,915 2,436,727 2,409,431 Arizona: Demand 364,041 351,429 398,102 365,007 368,432 Interest-bearing: Transaction 1,330,817 1,369,657 1,439,796 1,450,416 1,406,300 Savings 9,835 9,787 11,593 14,656 13,571 Time 65,360 73,261 73,912 72,286 71,886 Total interest-bearing 1,406,012 1,452,705 1,525,301 1,537,358 1,491,757 Total Arizona 1,770,053 1,804,134 1,923,403 1,902,365 1,860,189
Page 32
21
Page 33
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) (In thousands) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Kansas/Missouri: Demand 237,762 248,190 271,399 281,263 282,235 Interest-bearing: Transaction 1,323,397 1,199,349 1,203,155 1,194,500 1,151,956 Savings 13,182 16,782 16,222 14,256 14,251 Time 30,436 35,686 38,542 37,820 37,563 Total interest-bearing 1,367,015 1,251,817 1,257,919 1,246,576 1,203,770 Total Kansas/Missouri 1,604,777 1,500,007 1,529,318 1,527,839 1,486,005 Arkansas: Demand 26,923 24,034 27,628 33,558 21,416 Interest-bearing: Transaction 112,809 75,872 111,487 237,279 64,174 Savings 2,545 2,703 2,859 2,695 2,411 Time 22,318 17,315 18,099 12,664 14,538 Total interest-bearing 137,672 95,890 132,445 252,638 81,123 Total Arkansas 164,595 119,924 160,073 286,196 102,539 Total BOK Financial $ 39,531,379 $ 39,855,841 $ 38,677,048 $ 39,435,006 $ 38,500,018 22
Page 34
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) NET INTEREST MARGIN TREND – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Tax-equivalent asset yields Interest-bearing cash and cash equivalents 3.64 % 3.65 % 3.60 % 3.85 % 4.39 % Trading securities 5.15 % 4.85 % 4.64 % 4.83 % 5.25 % Investment securities, net of allowance 1.29 % 1.38 % 1.41 % 1.41 % 1.41 % Available-for-sale securities 4.11 % 3.98 % 3.93 % 3.94 % 3.93 % Fair value option securities 3.82 % 4.51 % 4.83 % 4.83 % 5.45 % Restricted equity securities 8.23 % 7.66 % 7.39 % 7.22 % 7.84 % Residential mortgage loans held for sale 6.11 % 6.22 % 5.42 % 5.84 % 6.08 % Loans 6.24 % 6.20 % 6.25 % 6.48 % 6.70 % Allowance for loan losses Loans, net of allowance 6.31 % 6.26 % 6.31 % 6.55 % 6.78 % Total tax-equivalent yield on earning assets 5.37 % 5.27 % 5.23 % 5.36 % 5.53 % Cost of interest-bearing liabilities: Interest-bearing deposits: Transaction 2.67 % 2.64 % 2.67 % 2.88 % 3.14 % Savings 0.53 % 0.54 % 0.54 % 0.54 % 0.55 % Time 3.40 % 3.41 % 3.53 % 3.64 % 3.73 % Total interest-bearing deposits 2.70 % 2.67 % 2.71 % 2.91 % 3.14 % Funds purchased and repurchase agreements 3.07 % 3.09 % 2.90 % 3.47 % 3.29 % Other borrowings 3.90 % 3.88 % 3.90 % 4.22 % 4.54 % Subordinated debt 6.23 % 6.25 % 6.14 % 6.12 % — % Total cost of interest-bearing liabilities 2.96 % 2.93 % 2.92 % 3.06 % 3.33 % Tax-equivalent net interest spread 2.41 % 2.34 % 2.31 % 2.30 % 2.20 % Effect of noninterest-bearing funding sources and other 0.59 % 0.57 % 0.59 % 0.68 % 0.71 % Tax-equivalent net interest margin 3.00 % 2.91 % 2.90 % 2.98 % 2.91 % Yield calculations are shown on a tax-equivalent basis at the statutory federal and state rates for the periods presented. The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also includes average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield/rate calculations are generally based on the conventions that determine how interest income and expense is accrued. 23
Page 35
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) CREDIT QUALITY INDICATORS – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended (In thousands, except ratios) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Nonperforming assets: Nonaccruing loans: Commercial: Healthcare $ 25,120 $ 21,112 $ 21,138 $ 23,490 $ 24,507 Services 2,857 2,928 1,260 6,135 7,647 Energy — — — — 31 General business 3,812 5,118 2,868 6,477 85 Total commercial 31,789 29,158 25,266 36,102 32,270 Commercial real estate 6,315 6,431 6,601 6,697 6,809 Loans to individuals: Permanent mortgage 19,795 18,768 20,175 18,263 21,255 Permanent mortgage guaranteed by U.S. government agencies 8,193 7,585 7,768 8,586 7,348 Personal 185 200 194 4,712 4,712 Total loans to individuals 28,173 26,553 28,137 31,561 33,315 Total nonaccruing loans 66,277 62,142 60,004 74,360 72,394 Real estate and other repossessed assets 303 508 15 176 1,751 Total nonperforming assets $ 66,580 $ 62,650 $ 60,019 $ 74,536 $ 74,145 Total nonperforming assets excluding those guaranteed by U.S. government agencies $ 58,387 $ 55,065 $ 52,251 $ 65,950 $ 66,797 Accruing loans 90 days past due $ — $ 6,242 $ 2,411 $ — $ 1,135 Gross charge-offs $ 1,652 $ 1,305 $ 3,176 $ 2,353 $ 4,348 Recoveries (766) (805) (1,303) (907) (721) Net charge-offs (recoveries) $ 886 $ 500 $ 1,873 $ 1,446 $ 3,627 Provision for loan losses $ (4,023) $ 255 $ 3,732 $ (386) $ 4,270 Provision for credit losses from off- balance sheet unfunded loan commitments 4,122 142 (5,934) 487 (2,208) Provision for expected credit losses from mortgage banking activities (77) (283) 2,213 (95) (74) Provision for credit losses related to investment (held-to-maturity) securities portfolio (22) (114) (11) (6) 12 Total provision for credit losses $ — $ — $ — $ — $ 2,000 1 Excludes residential mortgage loans guaranteed by agencies of the U.S. government. 24 1
Page 36
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) Three Months Ended (In thousands, except ratios) Sep 30, 2026 June 30, 2026 Mar. 31, 2026 Dec. 31, 2025 Sep. 30, 2025 Allowance for loan losses to period end loans 0.98 % 1.02 % 1.06 % 1.08 % 1.12 % Combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments to period end loans 1.16 % 1.19 % 1.23 % 1.28 % 1.32 % Nonperforming assets to period end loans and repossessed assets 0.24 % 0.23 % 0.23 % 0.29 % 0.30 % Net charge-offs (annualized) to average loans 0.01 % 0.01 % 0.03 % 0.02 % 0.06 % Allowance for loan losses to nonaccruing loans 469.26 % 508.59 % 531.66 % 419.41 % 426.92 % Combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments to nonaccruing loans 554.66 % 591.96 % 618.45 % 497.36 % 504.99 % 1 1 Excludes residential mortgage loans guaranteed by agencies of the U.S. government. 25 1
Page 37
BOK Financial Corporation Quarterly Earnings Release Exhibit 99.1(b) SEGMENTS – UNAUDITED BOK FINANCIAL CORPORATION Three Months Ended 3Q26 vs 2Q26 3Q26 vs 3Q25 (In thousands, except ratios) Sep 30, 2026 June 30, 2026 Sep. 30, 2025 Change % Change Change % Change Commercial Banking: Net interest income $ 181,883 $ 178,992 $ 179,473 $ 2,891 1.6 % $ 2,410 1.3 % Fees and commissions revenue 59,301 61,414 57,538 (2,113) (3.4)% 1,763 3.1 % Combined net interest income and fee revenue 241,184 240,406 237,011 778 0.3 % 4,173 1.8 % Other operating expense 83,581 82,091 82,360 1,490 1.8 % 1,221 1.5 % Corporate allocations 17,347 16,586 17,934 761 4.6 % (587) (3.3)% Net income before taxes 140,712 146,160 138,316 (5,448) (3.7)% 2,396 1.7 % Average assets $ 23,722,951 $ 23,375,564 $ 21,764,695 $ 347,387 1.5 % $ 1,958,256 9.0 % Average loans 22,357,163 22,003,116 20,322,138 354,047 1.6 % 2,035,025 10.0 % Average deposits 19,080,487 18,918,188 18,161,486 162,299 0.9 % 919,001 5.1 % Consumer Banking: Net interest income $ 58,574 $ 57,912 $ 58,451 $ 662 1.1 % $ 123 0.2 % Fees and commissions revenue 37,210 37,847 38,071 (637) (1.7)% (861) (2.3)% Combined net interest income and fee revenue 95,784 95,759 96,522 25 — % (738) (0.8)% Other operating expense 64,342 63,436 64,042 906 1.4 % 300 0.5 % Corporate allocations 14,802 16,626 14,326 (1,824) (11.0)% 476 3.3 % Net income before taxes 14,468 13,555 14,490 913 6.7 % (22) (0.2)% Average assets $ 8,687,730 $ 8,648,052 $ 8,372,125 $ 39,678 0.5 % $ 315,605 3.8 % Average loans 2,675,121 2,633,853 2,432,968 41,268 1.6 % 242,153 10.0 % Average deposits 8,635,318 8,592,876 8,330,481 42,442 0.5 % 304,837 3.7 % Wealth Management: Net interest income $ 50,048 $ 45,378 $ 43,626 $ 4,670 10.3 % $ 6,422 14.7 % Fees and commissions revenue 91,100 101,081 111,516 (9,981) (9.9)% (20,416) (18.3)% Combined net interest income and fee revenue 141,148 146,459 155,142 (5,311) (3.6)% (13,994) (9.0)% Other operating expense 95,668 94,198 102,971 1,470 1.6 % (7,303) (7.1)% Corporate allocations 16,852 17,312 15,568 (460) (2.7)% 1,284 8.2 % Net income before taxes 28,846 34,977 36,606 (6,131) (17.5)% (7,760) (21.2)% Average assets $ 11,397,662 $ 11,219,080 $ 11,265,485 $ 178,582 1.6 % $ 132,177 1.2 % Average loans 2,562,344 2,479,191 2,353,961 83,153 3.4 % 208,383 8.9 % Average deposits 10,757,766 10,656,194 10,731,569 101,572 1.0 % 26,197 0.2 % Fiduciary assets 78,125,091 78,944,144 73,862,296 (819,053) (1.0)% 4,262,795 5.8 % Assets under management or administration 129,333,432 129,271,398 122,673,531 62,034 — % 6,659,901 5.4 % Certain prior period amounts have been reclassified to conform to current period presentation. 26