Byline Bancorp, Inc. Reports Third Quarter 2025 Financial Results

Company Release - 10/23/2025 Third quarter net income of $37.2 million, $0.82 diluted earnings per share Byline Bancorp, Inc. (NYSE: BY), today reported: At or for the quarter Third Quarter Highlights (compared to 2Q25 unless specified) 3Q25 2Q25 3Q24 Financial Results ($ in thousands) • Delivered solid third quarter results Net interest income $ 99,871 $ 95,970 $ 87,455 reflecting record revenues Non-interest income 15,864 14,483 14,385 Total revenue(1) 115,735 110,453 101,840 • Completed $75.0 million offering of Non-interest expense (NIE) 60,518 59,602 54,327 subordinated debt at 6.875% Pre-tax pre-provision net income (PTPP)(1) 55,217 50,851 47,513 Provision for credit losses 5,298 11,923 7,475 • PTPP ROAA of 2.25%(1), 12th consecutive Provision for income taxes 12,719 8,846 9,710 quarter greater than 2.00% Net income $ 37,200 $ 30,082 $ 30,328 • TBV per common share of $22.58(1), up 4.7% Per Share Diluted earnings per share (EPS) $ 0.82 $ 0.66 $ 0.69 Income Statement Dividends declared per common share 0.10 0.10 0.09 • Net interest income of $99.9 million, an Book value per common share 26.99 26.00 24.70 increase of $3.9 million, or 4.1% Tangible book value per common share(1) 22.58 21.56 20.21 • NIM expanded nine bps to 4.27% Balance Sheet & Credit Quality ($ in thousands) Total deposits $ 7,828,197 $ 7,810,479 $ 7,497,887 • Non-interest income of $15.9 million, an Total loans and leases 7,461,321 7,353,869 6,899,401 increase of $1.4 million, or 9.5% Net charge-offs 7,107 7,656 8,467 Allowance for credit losses (ACL) 105,717 107,727 98,860 • Adjusted efficiency ratio(1) of 50.27% ACL to total loans and leases held for investment 1.42% 1.47% 1.44% Balance Sheet Select Ratios (annualized where applicable) • Total assets of $9.8 billion Efficiency ratio(1) 51.00% 52.61% 52.02% Return on average assets (ROAA) 1.52% 1.25% 1.29% • Total loans and leases grew $107.5 million, Return on average stockholders' equity 12.21% 10.24% 11.39% or 5.8%(2) Return on average tangible common equity(1) 15.11% 12.83% 14.49% Net interest margin (NIM) 4.27% 4.18% 3.88% • TCE/TA of 10.78%(1), increase of 39 bps Common equity to total assets 12.61% 12.27% 11.63% Tangible common equity to tangible assets(1) 10.78% 10.39% 9.72% • CET 1 of 12.15%, up 30 bps Common equity tier 1 12.15% 11.85% 11.35% CEO/President Commentary Roberto R. Herencia, Executive Chairman and CEO of Byline Bancorp, commented, "Building on the momentum of a strong second quarter, we are pleased to deliver record financial results this quarter as a public company, reflecting the underlying strength of our business. We continue to execute well on our strategic plans and remain focused on becoming the preeminent commercial bank in Chicago." Alberto J. Paracchini, President of Byline Bancorp, added, "Third quarter results highlight the consistency of our execution and the strength of our commercial banking strategy. We delivered record earnings, strong profitability, margin expansion, and solid growth in loans, deposits, and fee revenue. I want to thank our employees for their continued dedication and contributions—they remain central to our success." (1) Represents non-GAAP financial measures. See “Reconciliation of non-GAAP Financial Measures” for a reconciliation to the most directly comparable GAAP financial measure. (2) Annualized. Board Declares Cash Dividend of $0.10 per Share On October 21, 2025, the Company's Board of Directors declared a cash dividend of $0.10 per share. The dividend will be paid on November 18, 2025, to stockholders of record of the Company's common stock as of November 4, 2025. STATEMENTS OF OPERATIONS HIGHLIGHTS Net Interest Income Net interest income for the third quarter of 2025 was $99.9 million, an increase of $3.9 million, or 4.1%, from the second quarter of 2025. The increase in net interest income was primarily due to higher interest income reflecting growth in the loan and lease portfolio, and lower rates paid on deposits, offset by higher interest expense on other borrowings. Tax-equivalent net interest margin(1) for the third quarter of 2025 was 4.28%, an increase of nine basis points compared to the second quarter of 2025. The increase was primarily due to lower reliance on brokered time deposits and higher yields on loans and leases, offset by higher costs of borrowings. Net loan accretion income contributed 11 basis points to the net interest margin for the quarter, a two basis point decrease over the prior quarter. The average cost of total deposits was 2.16% for the third quarter of 2025, a decrease of 11 basis points compared to the second quarter of 2025, mainly as a result of a lower balances of, and rates paid on, brokered time deposits. Provision for Credit Losses The provision for credit losses was $5.3 million for the third quarter of 2025, a decrease of $6.6 million compared to $11.9 million for the second quarter of 2025, mainly due to lower non-performing loans and leases, lower watch list and criticized loans, and higher recoveries compared to the prior quarter. Non-interest Income Non-interest income for the third quarter of 2025 was $15.9 million, an increase of $1.4 million, or 9.5%, compared to $14.5 million for the second quarter of 2025. The increase in total non-interest income was primarily due to higher net gains on sales of loans. Net gains on sales of loans were $7.0 million for the current quarter, an increase of $1.6 million, or 28.9% compared to the prior quarter. During the third quarter of 2025, we sold $92.9 million of U.S. government guaranteed loans compared to $73.0 million during the second quarter of 2025. Non-interest Expense Non-interest expense for the third quarter of 2025 was $60.5 million, an increase of $916,000 , or 1.5%, compared to $59.6 million for the second quarter of 2025. The increase in non-interest expense was mainly due to a $1.5 million increase in other non-interest expense driven primarily by a loss related to the extinguishment of subordinated debt issued in 2020. This was partially offset by a $967,000 decrease in legal, audit and other professional fees. Our efficiency ratio was 51.00%(1) for the third quarter of 2025, compared to 52.61%(1) for the second quarter of 2025, an improvement of 161 basis points. The improvement in the efficiency ratio was mainly driven by increased total revenues. Excluding significant items, our adjusted efficiency ratio was 50.27%(1) for the third quarter of 2025, compared to 48.20%(1) for the second quarter of 2025, an increase of 207 basis points. On an adjusted basis, non-interest expense increased $4.9 million compared to the second quarter of 2025, principally by higher incentive expense and increased health insurance in salaries and employee benefits. Income Taxes We recorded income tax expense of $12.7 million during the third quarter of 2025, compared to $8.8 million during the second quarter of 2025. The effective tax rates were 25.5% and 22.7% for the third quarter of 2025 and second quarter of 2025, respectively. The increase in the effective tax rate was due to income tax benefits related to share-based compensation recorded in the second quarter. STATEMENTS OF FINANCIAL CONDITION HIGHLIGHTS Assets Total assets were $9.8 billion as of September 30, 2025, an increase of $92.2 million, or 0.9%, compared to $9.7 billion at June 30, 2025. The increase for the current quarter was mainly due to an increase in net loans and leases of $114.7 million driven by increases to the commercial and industrial loan portfolio, and an increase in cash and cash equivalents of $40.7 million. These were offset by a $63.0 million decrease in securities available-for-sale mainly due to principal paydowns of securities. Allowance for Credit Losses The ACL was $105.7 million as of September 30, 2025, a decrease of $2.0 million, or 1.9%, from $107.7 million at June 30, 2025, mainly due to charge-offs of fully reserved loans. Net charge-offs of loans and leases during the third quarter of 2025 were $7.1 million, or 0.38% of average loans and leases, on an annualized basis. This was a decrease of $549,000 compared to net charge-offs of $7.7 million, or 0.43% of average loans and leases, during the second quarter of 2025. The decrease in net charge-offs for the quarter was primarily due to increased recoveries of previously charged-off loans. Asset Quality Non-performing assets were $67.4 million, or 0.69% of total assets, as of September 30, 2025, a decrease of $5.1 million from $72.5 million, or 0.75% of total assets, at June 30, 2025. The decrease was primarily driven by charge-offs of reserved loans and the resolution of a large commercial real estate loan. The government guaranteed portion of non-performing loans included in non-performing assets was $8.4 million at September 30, 2025, compared to $8.8 million at June 30, 2025, a decrease of $402,000. Deposits and Other Liabilities Total deposits increased $17.7 million, or 0.2% to $7.8 billion at September 30, 2025. The increase in deposits was mainly due to increases in non-interest-bearing demand accounts, mainly due to deposit shift and seasonality, offset by decreases to time deposits driven by decreased brokered time deposits. Total borrowings and other liabilities were $746.5 million at September 30, 2025, an increase of $29.2 million from $717.3 million at June 30, 2025. The increase was primarily driven by timing of subordinated debt issued during the third quarter and subsequent full redemption of $75.0 million of subordinated notes due 2030 on October 1, 2025. Stockholders’ Equity Total stockholders’ equity was $1.2 billion at September 30, 2025, an increase of $45.3 million, or 3.8%, from June 30, 2025, primarily due to an increase in retained earnings from net income. Conference Call, Webcast and Slide Presentation We will host a conference call and webcast at 9:00 a.m. Central Time on Friday, October 24, 2025, to discuss our quarterly financial results. Analysts and investors may participate in the question-and-answer session. The call can be accessed via telephone at (833) 470-1428; passcode 463912. A recorded replay can be accessed through November 7, 2025, by dialing (866) 813-9403; passcode: 194319. A slide presentation relating to our third quarter 2025 results will be accessible prior to the conference call. The slide presentation and webcast of the conference call can be accessed on our investor relations website at www.bylinebancorp.com. About Byline Bancorp, Inc. Headquartered in Chicago, Byline Bancorp, Inc. is the parent company of Byline Bank, a full service commercial bank serving small- and medium-sized businesses, financial sponsors, and consumers. Byline Bank has approximately $9.8 billion in assets and operates 45 branch locations throughout the Chicago and Milwaukee metropolitan areas. Byline Bank offers a broad range of commercial and community banking products and services including small ticket equipment leasing solutions and is one of the top Small Business Administration lenders in the United States. Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.S. federal securities laws. Forward-looking statements include, without limitation, statements concerning plans, estimates, calculations, forecasts and projections with respect to the anticipated future performance of the Company. These statements are often, but not always, made through the use of words or phrases such as ‘‘may’’, ‘‘might’’, ‘‘should’’, ‘‘could’’, ‘‘predict’’, ‘‘potential’’, ‘‘believe’’, ‘‘expect’’, ‘‘continue’’, ‘‘will’’, ‘‘anticipate’’, ‘‘seek’’, ‘‘estimate’’, ‘‘intend’’, ‘‘plan’’, ‘‘projection’’, ‘‘would’’, ‘‘annualized’’, “target” and ‘‘outlook’’, or the negative version of those words or other comparable words or phrases of a future or forward-looking nature. Forward-looking statements involve estimates and known and unknown risks, and reflect various assumptions and involve elements of subjective judgment and analysis, which may or may not prove to be correct, and which are subject to uncertainties and contingencies outside the control of Byline and its respective affiliates, directors, employees and other representatives, which could cause actual results to differ materially from those presented in this communication. No representations, warranties or guarantees are or will be made by Byline as to the reliability, accuracy or completeness of any forward-looking statements contained in this communication or that such forward-looking statements are or will remain based on reasonable assumptions. You should not place undue reliance on any forward-looking statements contained in this communication. Certain risks and important factors that could affect Byline’s future results are identified in our Annual Report on Form 10-K and other reports we file with the Securities and Exchange Commission, including among other things under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024. Any forward-looking statement speaks only as of the date on which it is made, and Byline undertakes no obligation to update any forward-looking statement, whether to reflect events or circumstances after the date on which the statement is made, to reflect new information or the occurrence of unanticipated events, or otherwise unless required under the federal securities laws. BYLINE BANCORP, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (unaudited) September 30, June 30, September 30, (dollars in thousands) 2025 2025 2024 ASSETS Cash and due from banks $ 70,406 $ 75,114 $ 77,047 Interest bearing deposits with other banks 188,610 143,236 375,549 Cash and cash equivalents 259,016 218,350 452,596 Equity and other securities, at fair value 10,461 10,759 9,132 Securities available-for-sale, at fair value 1,512,194 1,575,240 1,502,108 Securities held-to-maturity, at amortized cost — — 605 Restricted stock, at cost 15,934 18,649 22,743 Loans held for sale 20,566 25,814 19,955 Loans and leases: Loans and leases 7,440,755 7,328,055 6,879,446 Allowance for credit losses - loans and leases (105,717 ) (107,727 ) (98,860 ) Net loans and leases 7,335,038 7,220,328 6,780,586 Servicing assets, at fair value 19,019 18,797 18,945 Premises and equipment, net 58,785 59,544 63,135 Other real estate owned, net 4,220 4,946 532 Goodwill and other intangible assets, net 202,014 203,508 199,443 Bank-owned life insurance 106,575 105,714 99,295 Deferred tax assets, net 49,918 57,104 37,737 Accrued interest receivable and other assets 218,635 201,465 217,504 Total assets $ 9,812,375 $ 9,720,218 $ 9,424,316 LIABILITIES AND STOCKHOLDERS’ EQUITY LIABILITIES Non-interest-bearing demand deposits $ 1,932,869 $ 1,773,229 $ 1,729,908 Interest-bearing deposits 5,895,328 6,037,250 5,767,979 Total deposits 7,828,197 7,810,479 7,497,887 Other borrowings 361,286 414,110 518,786 Subordinated notes, net 148,971 74,127 73,997 Junior subordinated debentures issued to capital trusts, net 71,272 71,136 70,783 Accrued expenses and other liabilities 164,967 157,950 166,551 Total liabilities 8,574,693 8,527,802 8,328,004 STOCKHOLDERS’ EQUITY Common stock 471 471 454 Additional paid-in capital 758,089 756,029 714,864 Retained earnings 615,784 583,170 507,576 Treasury stock (56,959 ) (57,015 ) (47,904 ) Accumulated other comprehensive loss, net of tax (79,703 ) (90,239 ) (78,678 ) Total stockholders’ equity 1,237,682 1,192,416 1,096,312 Total liabilities and stockholders’ equity $ 9,812,375 $ 9,720,218 $ 9,424,316 BYLINE BANCORP, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) Three Months Ended September 30, June 30, September 30, (dollars in thousands, except per share data) 2025 2025 2024 INTEREST AND DIVIDEND INCOME Interest and fees on loans and leases $ 132,401 $ 128,199 $ 128,336 Interest on securities 13,289 13,907 11,260 Other interest and dividend income 2,917 2,421 6,840 Total interest and dividend income 148,607 144,527 146,436 INTEREST EXPENSE Deposits 42,857 44,380 52,076 Other borrowings 1,502 1,396 3,919 Subordinated notes and debentures 4,377 2,781 2,986 Total interest expense 48,736 48,557 58,981 Net interest income 99,871 95,970 87,455 PROVISION FOR CREDIT LOSSES 5,298 11,923 7,475 Net interest income after provision for credit losses 94,573 84,047 79,980 NON-INTEREST INCOME Fees and service charges on deposits 2,741 2,633 2,591 Loan servicing revenue 3,062 3,071 3,174 Loan servicing asset revaluation (1,294 ) (2,150 ) (2,183 ) ATM and interchange fees 1,015 1,059 1,143 Net losses on sales of securities available-for-sale — (37 ) — Change in fair value of equity securities, net (298 ) 83 388 Net gains on sales of loans 6,981 5,414 5,864 Wealth management and trust income 1,366 1,074 1,101 Other non-interest income 2,291 3,336 2,307 Total non-interest income 15,864 14,483 14,385 NON-INTEREST EXPENSE Salaries and employee benefits 37,492 37,819 34,974 Occupancy and equipment expense, net 4,531 4,739 4,373 Loan and lease related expenses 1,274 938 703 Legal, audit, and other professional fees 3,876 4,843 3,643 Data processing 4,903 4,986 4,215 Net (gain) loss recognized on other real estate owned and other related expenses 617 (44 ) 74 Other intangible assets amortization expense 1,494 1,499 1,345 Other non-interest expense 6,331 4,822 5,000 Total non-interest expense 60,518 59,602 54,327 INCOME BEFORE PROVISION FOR INCOME TAXES 49,919 38,928 40,038 PROVISION FOR INCOME TAXES 12,719 8,846 9,710 NET INCOME $ 37,200 $ 30,082 $ 30,328 EARNINGS PER COMMON SHARE Basic $ 0.82 $ 0.66 $ 0.70 Diluted $ 0.82 $ 0.66 $ 0.69 BYLINE BANCORP, INC. AND SUBSIDIARIES SELECTED FINANCIAL DATA (unaudited) As of or For the Three Months Ended September 30, June 30, September 30, (dollars in thousands, except share and per share data) 2025 2025 2024 Earnings per Common Share Basic earnings per common share $ 0.82 $ 0.66 $ 0.70 Diluted earnings per common share $ 0.82 $ 0.66 $ 0.69 Adjusted diluted earnings per common share(1)(3) $ 0.83 $ 0.75 $ 0.70 Weighted average common shares outstanding (basic) 45,102,828 45,306,240 43,516,006 Weighted average common shares outstanding (diluted) 45,372,602 45,484,392 43,966,189 Common shares outstanding 45,859,977 45,866,649 44,384,706 Cash dividends per common share $ 0.10 $ 0.10 $ 0.09 Dividend payout ratio on common stock 12.20 % 15.15 % 13.04 % Book value per common share $ 26.99 $ 26.00 $ 24.70 Tangible book value per common share(1) $ 22.58 $ 21.56 $ 20.21 Key Ratios and Performance Metrics (annualized where applicable) Net interest margin 4.27 % 4.18 % 3.88 % Net interest margin, fully taxable equivalent(1)(4) 4.28 % 4.19 % 3.89 % Average cost of deposits 2.16 % 2.27 % 2.76 % Efficiency ratio(1)(2) 51.00 % 52.61 % 52.02 % Adjusted efficiency ratio(1)(2)(3) 50.27 % 48.20 % 51.62 % Non-interest income to total revenues(1) 13.71 % 13.11 % 14.13 % Non-interest expense to average assets 2.47 % 2.48 % 2.31 % Adjusted non-interest expense to average assets(1)(3) 2.44 % 2.28 % 2.29 % Return on average stockholders' equity 12.21 % 10.24 % 11.39 % Adjusted return on average stockholders' equity(1)(3) 12.42 % 11.51 % 11.53 % Return on average assets 1.52 % 1.25 % 1.29 % Adjusted return on average assets(1)(3) 1.54 % 1.41 % 1.30 % Pre-tax pre-provision return on average assets(1) 2.25 % 2.12 % 2.02 % Adjusted pre-tax pre-provision return on average assets(1)(3) 2.29 % 2.32 % 2.03 % Return on average tangible common stockholders' equity(1) 15.11 % 12.83 % 14.49 % Adjusted return on average tangible common stockholders' equity(1)(3) 15.36 % 14.37 % 14.67 % Non-interest-bearing deposits to total deposits 24.69 % 22.70 % 23.07 % Loans and leases held for sale and loans and lease held for investment to total deposits 95.31 % 94.15 % 92.02 % Deposits to total liabilities 91.29 % 91.59 % 90.03 % Deposits per branch $ 173,960 $ 173,566 $ 162,998 Asset Quality Ratios Non-performing loans and leases to total loans and leases held for investment, net before ACL 0.85 % 0.92 % 1.02 % Total non-performing assets as a percentage of total assets 0.69 % 0.75 % 0.75 % ACL to total loans and leases held for investment, net before ACL 1.42 % 1.47 % 1.44 % Net charge-offs to average total loans and leases held for investment, net before ACL - loans and leases 0.38 % 0.43 % 0.49 % Capital Ratios Common equity to total assets 12.61 % 12.27 % 11.63 % Tangible common equity to tangible assets(1) 10.78 % 10.39 % 9.72 % Leverage ratio 12.20 % 11.92 % 11.18 % Common equity tier 1 capital ratio 12.15 % 11.85 % 11.35 % Tier 1 capital ratio 13.12 % 12.83 % 12.39 % Total capital ratio 15.81 % 14.87 % 14.41 % (1) Represents a non-GAAP financial measure. See “Reconciliation of non-GAAP Financial Measures” for a reconciliation of our non-GAAP measures to the most directly comparable GAAP financial measure. (2) Represents non-interest expense less amortization of intangible assets divided by net interest income and non-interest income. (3) Calculation excludes merger-related expenses and expenses related to the secondary public offering of common stock. (4) Interest income and rates include the effects of a tax equivalent adjustment to adjust tax exempt investment income on tax exempt investment securities to a fully taxable basis, assuming a federal income tax rate of 21%. BYLINE BANCORP, INC. AND SUBSIDIARIES QUARTER-TO-DATE STATEMENT OF AVERAGE INTEREST-EARNING ASSETS AND AVERAGE INTEREST-BEARING LIABILITIES (unaudited) For the Three Months Ended September 30, 2025 June 30, 2025 September 30, 2024 (dollars in thousands) Average Balance(5) Interest Inc / Exp Avg. Yield / Rate Average Balance(5) Interest Inc / Exp Avg. Yield / Rate Average Balance(5) Interest Inc / Exp Avg. Yield / Rate ASSETS Cash and cash equivalents $ 191,881 $ 1,859 3.84 % $ 182,140 $ 1,655 3.64 % $ 468,852 $ 5,771 4.90 % Loans and leases(1) 7,355,958 132,401 7.14 % 7,220,834 128,199 7.12 % 6,827,726 128,336 7.48 % Taxable securities 1,585,013 13,491 3.38 % 1,650,463 13,806 3.36 % 1,508,987 11,467 3.02 % Tax-exempt securities(2) 153,424 1,084 2.80 % 154,719 1,098 2.85 % 156,085 1,091 2.78 % Total interest-earning assets $ 9,286,276 $ 148,835 6.36 % $ 9,208,156 $ 144,758 6.31 % $ 8,961,650 $ 146,665 6.51 % Allowance for credit losses - loans and leases (109,877 ) (106,278 ) (101,001 ) All other assets 540,521 531,939 513,200 TOTAL ASSETS $ 9,716,920 $ 9,633,817 $ 9,373,849 LIABILITIES AND STOCKHOLDERS’ EQUITY Deposits Interest checking $ 834,763 $ 3,682 1.75 % $ 820,341 $ 3,551 1.74 % $ 754,586 $ 4,439 2.34 % Money market accounts 2,986,541 23,468 3.12 % 2,905,465 22,749 3.14 % 2,386,909 21,371 3.56 % Savings 495,506 136 0.11 % 506,874 139 0.11 % 495,541 190 0.15 % Time deposits 1,654,056 15,571 3.73 % 1,810,909 17,941 3.97 % 2,134,587 26,076 4.86 % Total interest-bearing-deposits 5,970,866 42,857 2.85 % 6,043,589 44,380 2.95 % 5,771,623 52,076 3.59 % Other borrowings 307,457 1,502 1.94 % 298,916 1,396 1.87 % 474,498 3,919 3.29 % Subordinated notes and debentures 190,074 4,377 9.14 % 145,175 2,781 7.68 % 144,702 2,986 8.21 % Total borrowings 497,531 5,879 4.69 % 444,091 4,177 3.77 % 619,200 6,905 4.44 % Total interest-bearing liabilities $ 6,468,397 $ 48,736 2.99 % $ 6,487,680 $ 48,557 3.00 % $ 6,390,823 $ 58,981 3.67 % Non-interest-bearing-demand deposits 1,888,693 1,802,639 1,741,250 Other liabilities 151,540 164,944 182,148 Total stockholders’ equity 1,208,290 1,178,554 1,059,628 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 9,716,920 $ 9,633,817 $ 9,373,849 Net interest spread(3) 3.37 % 3.31 % 2.84 % Net interest income, fully taxable equivalent $ 100,099 $ 96,201 $ 87,684 Net interest margin, fully taxable equivalent(2)(4) 4.28 % 4.19 % 3.89 % Less: Tax-equivalent adjustment 228 0.01 % 231 0.01 % 229 0.01 % Net interest income $ 99,871 $ 95,970 $ 87,455 Net interest margin(4) 4.27 % 4.18 % 3.88 % Net loan accretion impact on margin $ 2,528 0.11 % $ 2,978 0.13 % $ 2,982 0.13 % (1) Loan and lease balances are net of deferred origination fees and costs and initial direct costs. Non-accrual loans and leases are included in total loan and lease balances. (2) Interest income and rates include the effects of a tax equivalent adjustment to adjust tax exempt investment income on tax exempt investment securities to a fully taxable basis, assuming a federal income tax rate of 21%. (3) Represents the average rate earned on interest-earning assets minus the average rate paid on interest-bearing liabilities. (4) Represents net interest income (annualized) divided by total average earning assets. (5) Average balances are average daily balances. BYLINE BANCORP, INC. AND SUBSIDIARIES SELECTED BALANCE SHEET TABLES AND FINANCIAL RATIOS (unaudited) The following table presents our allocation of originated, purchased credit deteriorated (PCD), and acquired non-credit-deteriorated loans and leases at the dates indicated: September 30, 2025 June 30, 2025 September 30, 2024 (dollars in thousands) Amount % of Total Amount % of Total Amount % of Total Originated loans and leases: Commercial real estate $ 2,234,986 30.0 % $ 2,184,187 29.8 % $ 2,040,072 29.7 % Residential real estate 552,984 7.4 % 534,062 7.3 % 497,034 7.2 % Construction, land development, and other land 412,032 5.6 % 416,118 5.6 % 415,636 6.0 % Commercial and industrial 2,804,434 37.7 % 2,737,054 37.4 % 2,476,177 36.0 % Installment and other 2,431 0.0 % 2,984 0.0 % 3,839 0.1 % Leasing financing receivables 750,531 10.1 % 731,610 10.0 % 711,233 10.3 % Total originated loans and leases $ 6,757,398 90.8 % $ 6,606,015 90.1 % $ 6,143,991 89.3 % Purchased credit deteriorated loans: Commercial real estate $ 71,359 1.0 % $ 84,747 1.2 % $ 95,240 1.4 % Residential real estate 24,061 0.3 % 27,076 0.4 % 31,362 0.5 % Construction, land development, and other land 2,513 0.0 % 2,487 0.0 % 4 0.0 % Commercial and industrial 19,193 0.3 % 17,428 0.2 % 14,526 0.2 % Installment and other 81 0.0 % 86 0.0 % 110 0.0 % Total purchased credit deteriorated loans $ 117,207 1.6 % $ 131,824 1.8 % $ 141,242 2.1 % Acquired non-credit-deteriorated loans and leases: Commercial real estate $ 215,801 2.9 % $ 224,442 3.1 % $ 227,035 3.3 % Residential real estate 178,896 2.4 % 172,570 2.4 % 181,976 2.6 % Construction, land development, and other land 50,493 0.7 % 61,897 0.8 % 84,172 1.2 % Commercial and industrial 106,827 1.4 % 113,609 1.6 % 100,852 1.5 % Installment and other 14,133 0.2 % 17,698 0.2 % 32 0.0 % Leasing financing receivables — — — — 146 0.0 % Total acquired non-credit-deteriorated loans and leases $ 566,150 7.6 % $ 590,216 8.1 % $ 594,213 8.6 % Total loans and leases $ 7,440,755 100.0 % $ 7,328,055 100.0 % $ 6,879,446 100.0 % Allowance for credit losses - loans and leases (105,717 ) (107,727 ) (98,860 ) Total loans and leases, net of allowance for credit losses - loans and leases $ 7,335,038 $ 7,220,328 $ 6,780,586 The following table presents the balance and activity within the allowance for credit losses - loans and lease for the periods indicated: Three Months Ended September 30, June 30, September 30, (dollars in thousands) 2025 2025 2024 ACL - loans and leases, beginning of period $ 107,727 $ 100,420 $ 99,730 Adjustment for acquired PCD loans — 3,206 — Provision for credit losses - loans and leases 5,097 11,757 7,597 Net charge-offs - loans and leases (7,107 ) (7,656 ) (8,467 ) ACL - loans and leases, end of period $ 105,717 $ 107,727 $ 98,860 Net charge-offs - loans and leases to average total loans and leases held for investment, net before ACL 0.38 % 0.43 % 0.49 % Provision for credit losses - loans and leases to net charge-offs - loans and leases during the period 0.72 x 1.54 x 0.90x BYLINE BANCORP, INC. AND SUBSIDIARIES SELECTED BALANCE SHEET TABLES AND FINANCIAL RATIOS (unaudited) The following table presents the amounts of non-performing loans and leases and other real estate owned at the date indicated: September 30, 2025 Change from (dollars in thousands) September 30, 2025 June 30, 2025 September 30, 2024 June 30, 2025 September 30, 2024 Non-performing assets: Non-accrual loans and leases $ 63,158 $ 67,552 $ 70,507 (6.5 )% (10.4 )% Past due loans and leases 90 days or more and still accruing interest — — — —% —% Total non-performing loans and leases $ 63,158 $ 67,552 $ 70,507 (6.5 )% (10.4 )% Other real estate owned 4,220 4,946 532 (14.7 )% 692.8 % Total non-performing assets $ 67,378 $ 72,498 $ 71,039 (7.1 )% (5.2 )% Total non-performing loans and leases as a percentage of total loans and leases 0.85 % 0.92 % 1.02 % Total non-performing assets as a percentage of total assets 0.69 % 0.75 % 0.75 % Allowance for credit losses - loans and leases as a percentage of non-performing loans and leases 167.38 % 159.47 % 140.21 % Non-performing assets guaranteed by U.S. government: Non-accrual loans guaranteed $ 8,417 $ 8,819 $ 11,332 (4.6 )% (25.7 )% Past due loans 90 days or more and still accruing interest guaranteed — — — —% —% Total non-performing loans guaranteed $ 8,417 $ 8,819 $ 11,332 (4.6 )% (25.7 )% Total non-performing loans and leases not guaranteed as a percentage of total loans and leases 0.74 % 0.80 % 0.86 % Total non-performing assets not guaranteed as a percentage of total assets 0.60 % 0.66 % 0.63 % The following table presents the composition of deposits at the dates indicated: September 30, 2025 Change from (dollars in thousands) September 30, 2025 June 30, 2025 September 30, 2024 June 30, 2025 September 30, 2024 Non-interest-bearing demand deposits $ 1,932,869 $ 1,773,229 $ 1,729,908 9.0 % 11.7 % Interest-bearing checking accounts 868,922 857,460 749,721 1.3 % 15.9 % Money market demand accounts 2,957,995 2,996,684 2,426,522 (1.3 )% 21.9 % Other savings 488,894 501,020 489,618 (2.4 )% (0.1 )% Time deposits (below $250,000) 1,151,764 1,216,990 1,639,658 (5.4 )% (29.8 )% Time deposits ($250,000 and above) 427,753 465,096 462,460 (8.0 )% (7.5 )% Total deposits $ 7,828,197 $ 7,810,479 $ 7,497,887 0.2 % 4.4 % BYLINE BANCORP, INC. AND SUBSIDIARIES RECONCILIATION OF NON-GAAP FINANCIAL MEASURES (unaudited) Non-GAAP Financial Measures This release contains certain financial information determined by methods other than in accordance with accounting principles generally accepted in the United States of America (“GAAP”). These measures include adjusted net income, adjusted diluted earnings per share, adjusted non-interest expense, adjusted non-interest expense excluding amortization of intangible assets, adjusted efficiency ratio, adjusted non-interest expense to average assets, tax equivalent net interest income, tax-equivalent net interest margin, total revenue, non-interest income to total revenues, adjusted return on average stockholders’ equity, adjusted return on average assets, pre-tax pre-provision net income, adjusted pre-tax pre-provision net income, pre-tax pre-provision return on average assets, adjusted pre-tax pre-provision return on average assets, tangible common equity, tangible assets, tangible net income available to common stockholders, adjusted tangible net income available to common stockholders, tangible book value per common share, tangible common equity to tangible assets, return on average tangible common stockholders' equity, and adjusted return on average tangible common stockholders' equity. Management believes that these non-GAAP financial measures provide useful information to management and investors that is supplementary to the Company’s financial condition, results of operations and cash flows computed in accordance with GAAP; however, management acknowledges that our non-GAAP financial measures have a number of limitations. As such, these disclosures should not be viewed as a substitute for results determined in accordance with GAAP financial measures that we and other companies use. Management also uses these measures for peer comparison. See below in the financial schedules included in this press release for a reconciliation of the non-GAAP financial measures to the comparable GAAP financial measures. Additionally, please refer to the Company’s Annual Report on Form 10-K for the detailed definitions of these non-GAAP financial measures. As of or For the Three Months Ended September 30, June 30, September 30, (dollars in thousands, except per share data) 2025 2025 2024 Net income and earnings per share excluding significant items: Reported Net Income $ 37,200 $ 30,082 $ 30,328 Significant items: Merger-related expenses — 4,450 411 Secondary public offering of common stock expenses — 413 — Loss on extinguishment of debt 843 — — Tax benefit (221 ) (1,117 ) (32 ) Adjusted Net Income $ 37,822 $ 33,828 $ 30,707 Reported Diluted Earnings per Share $ 0.82 $ 0.66 $ 0.69 Significant items: Merger-related expenses — 0.10 0.01 Secondary public offering of common stock expenses — 0.01 — Loss on extinguishment of debt 0.02 — — Tax benefit (0.01 ) (0.02 ) — Adjusted Diluted Earnings per Share $ 0.83 $ 0.75 $ 0.70 BYLINE BANCORP, INC. AND SUBSIDIARIES RECONCILIATION OF NON-GAAP FINANCIAL MEASURES (continued) (unaudited) As of or For the Three Months Ended September 30, June 30, September 30, (dollars in thousands, except per share data, ratios annualized, where applicable) 2025 2025 2024 Adjusted non-interest expense: Non-interest expense $ 60,518 $ 59,602 $ 54,327 Less: Merger-related expenses — 4,450 411 Less: Secondary public offering of common stock expenses — 413 — Less: Loss on extinguishment of debt 843 — — Adjusted non-interest expense $ 59,675 $ 54,739 $ 53,916 Adjusted non-interest expense excluding amortization of intangible assets: Adjusted non-interest expense $ 59,675 $ 54,739 $ 53,916 Less: Amortization of intangible assets 1,494 1,499 1,345 Adjusted non-interest expense excluding amortization of intangible assets $ 58,181 $ 53,240 $ 52,571 Pre-tax pre-provision net income: Pre-tax income $ 49,919 $ 38,928 $ 40,038 Add: Provision for credit losses 5,298 11,923 7,475 Pre-tax pre-provision net income $ 55,217 $ 50,851 $ 47,513 Adjusted pre-tax pre-provision net income: Pre-tax pre-provision net income $ 55,217 $ 50,851 $ 47,513 Add: Merger-related expenses — 4,450 411 Add: Secondary public offering of common stock expenses — 413 — Add: Loss on extinguishment of debt 843 — — Adjusted pre-tax pre-provision net income $ 56,060 $ 55,714 $ 47,924 Tax equivalent net interest income: Net interest income $ 99,871 $ 95,970 $ 87,455 Add: Tax-equivalent adjustment 228 231 229 Net interest income, fully taxable equivalent $ 100,099 $ 96,201 $ 87,684 Total revenue: Net interest income $ 99,871 $ 95,970 $ 87,455 Add: Non-interest income 15,864 14,483 14,385 Total revenue $ 115,735 $ 110,453 $ 101,840 Tangible common stockholders' equity: Total stockholders' equity $ 1,237,682 $ 1,192,416 $ 1,096,312 Less: Goodwill and other intangibles 202,014 203,508 199,443 Tangible common stockholders' equity $ 1,035,668 $ 988,908 $ 896,869 Tangible assets: Total assets $ 9,812,375 $ 9,720,218 $ 9,424,316 Less: Goodwill and other intangibles 202,014 203,508 199,443 Tangible assets $ 9,610,361 $ 9,516,710 $ 9,224,873 Average tangible common stockholders' equity: Average total stockholders' equity $ 1,208,290 $ 1,178,554 $ 1,059,628 Less: Average goodwill and other intangibles 202,723 203,767 200,091 Average tangible common stockholders' equity $ 1,005,567 $ 974,787 $ 859,537 Average tangible assets: Average total assets $ 9,716,920 $ 9,633,817 $ 9,373,849 Less: Average goodwill and other intangibles 202,723 203,767 200,091 Average tangible assets $ 9,514,197 $ 9,430,050 $ 9,173,758 Tangible net income: Net income $ 37,200 $ 30,082 $ 30,328 Add: After-tax intangible asset amortization 1,103 1,107 986 Tangible net income $ 38,303 $ 31,189 $ 31,314 Adjusted tangible net income: Tangible net income $ 38,303 $ 31,189 $ 31,314 Add: Merger-related expenses — 4,450 411 Add: Secondary public offering of common stock expenses — 413 — Add: Loss on extinguishment of debt 843 — — Add: Tax benefit on significant items (221 ) (1,117 ) (32 ) Adjusted tangible net income $ 38,925 $ 34,935 $ 31,693 BYLINE BANCORP, INC. AND SUBSIDIARIES RECONCILIATION OF NON-GAAP FINANCIAL MEASURES (continued) (unaudited) As of or For the Three Months Ended September 30, June 30, September 30, (dollars in thousands, except share and per share data, ratios annualized, where applicable) 2025 2025 2024 Pre-tax pre-provision return on average assets: Pre-tax pre-provision net income $ 55,217 $ 50,851 $ 47,513 Average total assets 9,716,920 9,633,817 9,373,849 Pre-tax pre-provision return on average assets 2.25 % 2.12 % 2.02 % Adjusted pre-tax pre-provision return on average assets: Adjusted pre-tax pre-provision net income $ 56,060 $ 55,714 $ 47,924 Average total assets 9,716,920 9,633,817 9,373,849 Adjusted pre-tax pre-provision return on average assets 2.29 % 2.32 % 2.03 % Net interest margin, fully taxable equivalent: Net interest income, fully taxable equivalent $ 100,099 $ 96,201 $ 87,684 Total average interest-earning assets 9,286,276 9,208,156 8,961,650 Net interest margin, fully taxable equivalent 4.28 % 4.19 % 3.89 % Non-interest income to total revenues: Non-interest income $ 15,864 $ 14,483 $ 14,385 Total revenues 115,735 110,453 101,840 Non-interest income to total revenues 13.71 % 13.11 % 14.13 % Adjusted non-interest expense to average assets: Adjusted non-interest expense $ 59,675 $ 54,739 $ 53,916 Average total assets 9,716,920 9,633,817 9,373,849 Adjusted non-interest expense to average assets 2.44 % 2.28 % 2.29 % Adjusted efficiency ratio: Adjusted non-interest expense excluding amortization of intangible assets $ 58,181 $ 53,240 $ 52,571 Total revenues 115,735 110,453 101,840 Adjusted efficiency ratio 50.27 % 48.20 % 51.62 % Adjusted return on average assets: Adjusted net income $ 37,822 $ 33,828 $ 30,707 Average total assets 9,716,920 9,633,817 9,373,849 Adjusted return on average assets 1.54 % 1.41 % 1.30 % Adjusted return on average stockholders' equity: Adjusted net income $ 37,822 $ 33,828 $ 30,707 Average stockholders' equity 1,208,290 1,178,554 1,059,628 Adjusted return on average stockholders' equity 12.42 % 11.51 % 11.53 % Tangible common equity to tangible assets: Tangible common equity $ 1,035,668 $ 988,908 $ 896,869 Tangible assets 9,610,361 9,516,710 9,224,873 Tangible common equity to tangible assets 10.78 % 10.39 % 9.72 % Return on average tangible common stockholders' equity: Tangible net income $ 38,303 $ 31,189 $ 31,314 Average tangible common stockholders' equity 1,005,567 974,787 859,537 Return on average tangible common stockholders' equity 15.11 % 12.83 % 14.49 % Adjusted return on average tangible common stockholders' equity: Adjusted tangible net income $ 38,925 $ 34,935 $ 31,693 Average tangible common stockholders' equity 1,005,567 974,787 859,537 Adjusted return on average tangible common stockholders' equity 15.36 % 14.37 % 14.67 % Tangible book value per share: Tangible common equity $ 1,035,668 $ 988,908 $ 896,869 Common shares outstanding 45,859,977 45,866,649 44,384,706 Tangible book value per share $ 22.58 $ 21.56 $ 20.21 Investors / Media: Brooks Rennie Investor Relations Director 312-660-5805 [email protected] Source: Byline Bancorp, Inc.