Byline Bancorp, Inc. filings document the disclosure record of a Delaware bank holding company and its Byline Bank operations. Form 8-K reports furnish quarterly financial results, related presentation materials, and material-event disclosures covering operating performance, capital management, and balance-sheet actions.
The company's regulatory filings also address stock repurchase authorizations, redemption of subordinated notes, changes in the independent registered public accounting firm, and annual proxy matters. Proxy disclosures cover board and governance items, executive compensation, equity awards, and shareholder voting matters relevant to the company's public-company structure.
Byline Bancorp, Inc. (BY) reported third-quarter 2026 net income of $41.8 million and diluted earnings per share of $0.94. Total revenue was $121.0 million, up 4.6% year over year; net interest income was $103.7 million, up 2.8% from the second quarter, and net interest margin rose five basis points to 4.33%. Non-performing assets reached $87.9 million, or 0.89% of total assets, up 21.6% from June 30, primarily due to more non-accrual loans and leases.
Deposits rose 2.1% from the prior quarter to $8.0 billion, while wholesale funding was reduced by $268.7 million. Byline repurchased 521,980 common shares for $20.4 million and declared a $0.14-per-share cash dividend, a 16.7% increase, payable November 17, 2026, to holders of record November 3, 2026. The company also announced a merger agreement with Illinois State Bancorp, Inc., parent of First Nations Bank and The Bank of Bourbonnais.
Byline Bancorp, Inc. announced Byline Bank leadership appointments effective January 1, 2027: Sean H. McGuire will become Executive Vice President and Chief Commercial Banking Officer, Scott E. Hawthorne will become Executive Vice President and Chief Credit Officer, and Darrin Bacon will become Executive Vice President and Head of Commercial Banking. McGuire’s Chief Commercial Banking Officer position is newly created.
Brogan Ptacin, Executive Vice President and Head of Commercial Banking, and Mark Fucinato, Executive Vice President and Chief Credit Officer, gave notice they will retire effective December 31, 2026, after a combined 25 years of service to the Bank. Both will remain with the Bank in non-executive, part-time advisory roles; Fucinato will work with Hawthorne on the transition.
Bacon will report to McGuire, while McGuire and Hawthorne will report to Byline Bank President and Chief Executive Officer Alberto Paracchini. Byline Bank has approximately $9.9 billion in assets and operates 44 branch locations.
Byline Bancorp, Inc. (BY) agreed to acquire Illinois State Bancorp, Inc. in a cash-and-stock transaction valued at approximately $87.9 million, based on Byline’s October 5, 2026 closing share price of $37.63. At closing, Byline is to issue approximately 1.4 million shares and pay $28.9 million in cash to Illinois State Bancorp shareholders, plus approximately $5.1 million in cash to settle outstanding stock options; the stated value is $261.23 per Illinois State Bancorp common share.
Both companies’ boards approved the agreement unanimously. Closing is expected during the first quarter of 2027, subject to regulatory approvals, Illinois State Bancorp shareholder approval and other closing conditions. The combined franchise is expected to operate 48 branches with approximately $10.5 billion in assets, $8.0 billion in loans and $8.4 billion in deposits.
Byline’s presentation projects mid-single-digit EPS accretion and 1.2% tangible-book-value dilution, with earnback expected in less than 1.5 years. It estimates pre-tax merger costs of approximately $16.6 million.
BYLINE BANCORP, INC. (BY) director William G. Kistner reported purchasing 100 shares of common stock on 2026-08-19 at $38.30 per share in an open market or private transaction. The shares are held indirectly through the William G. Kistner Trust dated June 22, 1973, which now holds 14,289 shares, while Kistner also holds 1,036 shares directly.
BYLINE BANCORP, INC. (BY) director Mary Jo S. Herseth reported an open-market purchase of 300 shares of common stock on 2026-08-19 at $38.395 per share. The shares are held indirectly through The Herseth Family Revocable Trust Dated 12/02/25, bringing the trust’s reported holdings to 19,100 shares. The Rule 10b5-1 trading-plan checkbox was not selected.
BYLINE BANCORP, INC. common stock is reported as beneficially owned by MBG Investors I, L.P. and Antonio del Valle Perochena in this amended Schedule 13G. MBG reports beneficial ownership of 11,535,145 shares, representing 25.5% of the common stock outstanding. Antonio del Valle Perochena reports beneficial ownership of 11,575,953 shares, or 25.6%, including 40,808 shares held with sole voting and dispositive power and the remainder with shared power.
The amendment reflects a reduction in MBG’s beneficial ownership following the issuer’s repurchase of 300,000 shares from MBG under a Stock Repurchase Agreement dated August 7, 2026. The issuer agreed to purchase these shares at $39.10 per share, for an aggregate purchase price of $11.73 million, based on the five-day average closing price on the NYSE from July 27–31, 2026. Percent-of-class figures are calculated using 45,186,420 shares outstanding as of August 3, 2026.
Byline Bancorp, Inc. Chief Executive Officer Roberto R. Herencia reported selling 19,750 shares of common stock on 2026-08-13 at $39.2054 per share in an open-market or private transaction. Following this sale, he directly holds 411,643 shares of common stock.
He also reports indirect holdings of 16,612 shares through the Roberto Herencia Inc. Defined Benefit Plan and 2,575 shares through the Roberto Herencia Inc. 401(k). The filing indicates the Rule 10b5-1 trading-plan checkbox was not selected.
BYLINE BANCORP, INC. executive Dana Rose, Chief Human Resources Officer, reported a sale of 2,421 shares of common stock on 2026-08-12 at $39.00 per share in an open market or private transaction. Following this transaction, Rose directly holds 11,605 shares of BY common stock.
BY filed a notice of proposed sale of common stock by an affiliate through Merrill Lynch, with trading on the NYSE. The filing covers 2,421 shares of common stock, all originally received as stock awards for compensation on various dates in 2023 and 2025.