BY / Byline Bancorp, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

as of 6/30/2025

Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) FORMCHECKBOX U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-18210

As filed with the Securities and Exchange Commission on September 4, 2025

As filed with the Securities and Exchange Commission on September 4, 2025 Registration No.

BYLINE BANCORP, INC. LETTER OF TRANSMITTAL To Tender for Exchange 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035 CUISP #124411 AB5 / ISIN# US1124411AB57 and CUSIP# 124411 AC3/ ISIN# US124411 AC31 (the “Old Notes”) for 6.875% Fixed-to-Float

Exhibit 99.1 BYLINE BANCORP, INC. LETTER OF TRANSMITTAL To Tender for Exchange 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035 CUISP #124411 AB5 / ISIN# US1124411AB57 and CUSIP# 124411 AC3/ ISIN# US124411 AC31 (the “Old Notes”) for 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035 that have been registered under the Securities Act of 1933 (the “Securities Act”) CUSIP# 124411 AD1

Calculation of Filing Fee Tables Byline Bancorp, Inc.

Exhibit 107 Calculation of Filing Fee Tables S-4 Byline Bancorp, Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Ef

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 7, 2025 BYLINE BANCORP, IN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 7, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Form of Registration Rights Agreement, dated as of August 7, 2025, by and among Byline Bancorp, Inc. and the Purchasers.

Exhibit 10.2 REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (the “Agreement”) is dated as of August 7, 2025 and is made by and among Byline Bancorp, Inc., a Delaware corporation and bank holding company (the “Company”), and the several purchasers of the Subordinated Notes (as defined below) identified on the signature pages to the Purchase Agreement (as defined below) (collective

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc. (

Byline Bancorp, Inc. Completes Private Placement of $75.0 Million of 6.875% Fixed-to-Floating Rate Subordinated Notes

Exhibit 99.1 Byline Bancorp, Inc. Completes Private Placement of $75.0 Million of 6.875% Fixed-to-Floating Rate Subordinated Notes Chicago, IL, August 7, 2025 – Byline Bancorp, Inc. (“Byline” or the “Company”) (NYSE: BY), the parent company of Byline Bank (the “Bank”), today announced the completion of a private placement of $75.0 million in aggregate principal amount of 6.875% Fixed-to-Floating R

Disclaimers Forward Looking Statements This presentation contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Any statem

Fixed Income Investor Presentation July 2025 Exhibit 99.2 Disclaimers Forward Looking Statements This presentation contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Any statements about Byline Bancorp, Inc.’s (“Byline”, the “Company”, “we” or “our”) expectations, bel

Indenture, dated as of August 7, 2025, by and between Byline Bancorp, Inc. and U.S. Bank Trust Company, National Association, as trustee.

Exhibit 4.1 Byline Bancorp, Inc. As Issuer, and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION As Trustee, Paying Agent and Registrar INDENTURE Dated as of August 7, 2025 6.875% Fixed-to-Floating Rate Subordinated Notes due 2035 TABLE OF CONTENTS ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE 1 1.01 Definitions 1 1.02 Compliance Certificates and Opinions 13 1.03 Form of Documents Delivered to

Form of Subordinated Note Purchase Agreement, dated as of August 7, 2025, by and among Byline Bancorp, Inc. and the Purchasers.

Exhibit 10.1 SUBORDINATED NOTE PURCHASE AGREEMENT This SUBORDINATED NOTE PURCHASE AGREEMENT (this “Agreement”) is dated as of August 7, 2025, and is made by and among Byline Bancorp, Inc., a Delaware corporation and registered bank holding company (the “Company”), and the several purchasers of the Subordinated Notes (as defined herein) identified on the signature pages hereto (each a “Purchaser” a

Forward-Looking Statements 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,

2Q25 Earnings Presentation Exhibit 99.2 Forward-Looking Statements 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 C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 24, 2025 BYLINE BANCORP, INC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 24, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Byline Bancorp, Inc. Reports Second Quarter 2025 Financial Results Second quarter net income of $30.1 million, $0.66 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Second Quarter 2025 Financial Results Second quarter net income of $30.1 million, $0.66 diluted earnings per share Chicago, IL, July 24, 2025 – Byline Bancorp, Inc. (NYSE: BY), today reported: At or for the quarter Second Quarter Highlights (compared to 1Q25 unless specified) 2Q25 1Q25 2Q24 Financial Results ($ in thousands) • Completed the acquisition and

June 17, 2025

Exhibit 16.1 June 17, 2025 U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Ladies and Gentlemen: We have read the statements made by Byline Bancorp, Inc. included under Item 4.01 of its Current Report on Form 8-K dated June 16, 2025 to be filed with the Securities and Exchange Commission. We agree with the statements concerning our Firm contained therein. Sincerely, /

Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 16, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Calculation of Filing Fee Tables

Calculation of Filing Fee Tables S-3 BYLINE BANCORP, INC. Narrative Disclosure The maximum aggregate offering price of the securities to which the prospectus relates is $109,795,864.40. The prospectus is a final prospectus for the related offering. The prospectus supplement to which this exhibit is attached is a final prospectus supplement and base prospectus for the related offering. The maximum

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 10, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Underwriting Agreement, dated June 10, 2025, by and among the Company, the Selling Stockholders and the Underwriter.

Exhibit 1.1 Execution Version BYLINE BANCORP, INC. 4,282,210 Shares of Common Stock Underwriting Agreement June 10, 2025 J.P. Morgan Securities LLC c/o J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Ladies and Gentlemen: Certain stockholders named in Schedule 2 hereto (the “Selling Stockholders”) of Byline Bancorp, Inc., a Delaware corporation (the “Company”), propose to se

Sole Book-Running Manager J.P. Morgan

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(3)  Registration Number 333-287920 PROSPECTUS SUPPLEMENT (to Prospectus dated June 10, 2025) 4,282,210 shares Common stock The selling stockholders identified in this prospectus supplement are offering up to an aggregate of 4,282,210 shares of common stock, par value $0.

As filed with the Securities and Exchange Commission on June 10, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on June 10, 2025 Registration No.

Filing Fee Table**

Calculation of Filing Fee Tables S-3 BYLINE BANCORP, INC. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

Sole Book-Running Manager J.P. Morgan

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 3, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 21, 2025 BYLINE BANCORP, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 21, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Second Amendment to Second Amended and Restated Term Loan and Revolving Credit Agreement, dated May 21, 2025, but effective May 25, 2025, by and between Byline Bancorp, Inc. and CIBC Bank USA

SECOND AMENDMENT TO SECOND AMENDED AND RESTATED TERM LOAN AND REVOLVING CREDIT AGREEMENT THIS SECOND AMENDMENT TO SECOND AMENDED AND RESTATED TERM LOAN AND REVOLVING CREDIT AGREEMENT is dated May 21, 2025, but effective May 25, 2025 (the "Second Amendment"), and is by and between Byline Bancorp, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc.

Forward-Looking Statements 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,

1Q25 Earnings Presentation Exhibit 99.2 Forward-Looking Statements 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 C

Byline Bancorp, Inc. Reports First Quarter 2025 Financial Results First quarter net income of $28.2 million, $0.64 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2025 Financial Results First quarter net income of $28.2 million, $0.64 diluted earnings per share Chicago, IL, April 24, 2025 – Byline Bancorp, Inc. (NYSE: BY), today reported: At or for the quarter First Quarter Highlights (compared to 4Q24 unless specified) 1Q25 4Q24 1Q24 Financial Results ($ in thousands) • PTPP ROAA of 2.06%(1), 10th con

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 24, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Def

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 1, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Byline Bancorp, Inc. Completes the Merger with First Security Bancorp, Inc.

Exhibit 99.1 Byline Bancorp, Inc. Completes the Merger with First Security Bancorp, Inc. Chicago, IL, April 1, 2025 – Byline Bancorp, Inc. (“Byline”) (NYSE: BY), the parent company of Byline Bank, announced today that it has completed its merger with First Security Bancorp, Inc. (“First Security Bancorp”) and its wholly owned bank subsidiary, First Security Trust and Savings Bank (“First Security”

Subsidiaries of Byline Bancorp, Inc.

Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2024) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORATION d/b/a Byline Financial Group

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-38139 Byline Bancorp,

Byline Bancorp, Inc. Insider Trading Policy

Exhibit 19.1 BYLINE BANCORP, INC. INSIDER TRADING POLICY Purpose The Board of Directors (the “Board”) of Byline Bancorp, Inc. (together with Byline Bank and its other subsidiaries, the “Company”) has adopted this Insider Trading Policy (this “Policy”) for the Company’s officers, directors, and employees with respect to their trading activities. For purposes of this Policy, the term “employee” incl

FIRST SECURITY BANCORP, INC. Merger Proposal — Your Vote Is Important

Filed Pursuant to Rule 424(b)(3) Registration Statement No. 333-283274 FIRST SECURITY BANCORP, INC. Merger Proposal — Your Vote Is Important On September 30, 2024, Byline Bancorp, Inc., a Delaware corporation (which we refer to as Byline), and First Security Bancorp, Inc., a Delaware corporation (which we refer to as First Security), entered into an Agreement and Plan of Merger (which we refer to

Form of Proxy Card to be used by First Security Bancorp, Inc.

Exhibit 99.2 Proxy First Security Bancorp, Inc. This proxy is solicited on behalf of the Board of Directors of First Security Bancorp, Inc. (the “Company”) for use at the Special Meeting of Stockholders of the Company to be held at 10:00 a.m., Central Time, on Tuesday, March 4, 2025, virtually only at zoom.us/j/85240835953 (passcode: 396187) and at any postponements or adjournments thereof (the “S

As filed with the Securities and Exchange Commission on January 29, 2025

As filed with the Securities and Exchange Commission on January 29, 2025 Registration No.

January 30, 2025

January 30, 2025 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

Forward-Looking Statements 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,

4Q24 Earnings Presentation Exhibit 99.2 Forward-Looking Statements 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 C

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 23, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2024 Financial Results Fourth quarter net income of $30.3 million, $0.69 diluted earnings per share Full year net income of $120.8 million, $2.75 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2024 Financial Results Fourth quarter net income of $30.3 million, $0.69 diluted earnings per share Full year net income of $120.8 million, $2.75 diluted earnings per share Chicago, IL, January 23, 2025 – Byline Bancorp, Inc. (NYSE: BY), today reported: At or For the quarter Full Year Highlights (compared to prior year) 4Q24 3Q

Byline Bancorp, Inc. Appoints Brian F. Doran as General Counsel

Byline Bancorp, Inc. Appoints Brian F. Doran as General Counsel Chicago, IL, January 21, 2025 – Byline Bancorp, Inc. (NYSE: BY) announced today that Brian F. Doran has joined the Company and Byline Bank as Executive Vice President, General Counsel. Mr. Doran will be responsible for leading the company’s overall legal function and corporate governance initiatives while providing operational and str

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 21, 2025 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

January 3, 2025

January 3, 2025 VIA EDGAR Mr. Michael Henderson U.S. Securities and Exchange Commission Division of Corporation Finance Office of Finance 100 F Street, N.E. Washington, D.C. 20549-0303 Re: Byline Bancorp, Inc. Form 10-K for the Fiscal Year Ended December 31, 2023 File No. 001-38139 (the “Form 10-K”) Dear Mr. Henderson: Byline Bancorp, Inc. (the “Company”), a Delaware corporation, hereby submits vi

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 3, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp Announces Approval of New Stock Repurchase Program

EXHIBIT 99.1 Byline Bancorp Announces Approval of New Stock Repurchase Program Chicago, IL, December 5, 2024 – Byline Bancorp, Inc. (“Byline” or the “Company”) (NYSE: BY), announced today that its Board of Directors has approved a new stock repurchase program that authorizes the Company to repurchase up to 1.25 million shares of the Company’s outstanding common stock. The shares authorized to be r

Calculation of Filing Fee Table (Form Type) Byline Bancorp, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Table S-4 (Form Type) Byline Bancorp, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee(3) Newly Registered

Voting Agreement, dated September 30, 2024 between Arthur Wirtz III, Daniel R. Wirtz and Byline Bancorp, Inc.

Exhibit 9.1 EXECUTION VERSION COMPANY VOTING AGREEMENT THIS COMPANY VOTING AGREEMENT (this “Agreement”) is entered into as of September 30, 2024, by and among Byline Bancorp, Inc., a Delaware corporation (“Byline”), and those stockholders of First Security Bancorp, Inc. (the “Company”) whose names appear on the signature page of this Agreement (such stockholders collectively referred to in this Ag

As filed with the Securities and Exchange Commission on November 15, 2024

As filed with the Securities and Exchange Commission on November 15, 2024 Registration No.

Consent of D.A. Davidson & Co

Exhibit 99.1 November 15, 2024 Consent of D.A. Davidson & Co.: We hereby consent to the inclusion of our opinion letter to the Board of Directors of First Security Bancorp, Inc. (“First Security”) as an Appendix to the Proxy Statement/Prospectus relating to First Security’s proposed merger with Byline Bancorp, Inc. contained in the Registration Statement on Form S-4 as filed with the Securities an

BY / Byline Bancorp, Inc. / Estate of Daniel L. Goodwin - SC 13G/A Passive Investment

SC 13G/A 1 d803703dsc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Byline Bancorp, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 124411109 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Chec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, I

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 24, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp, Inc. Reports Third Quarter 2024 Financial Results Net income of $30.3 million, $0.69 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Third Quarter 2024 Financial Results Net income of $30.3 million, $0.69 diluted earnings per share Chicago, IL, October 24, 2024 – Byline Bancorp, Inc. (NYSE: BY), today reported: At or For the quarter Third Quarter Highlights (compared to 2Q24, unless otherwise specified) 3Q24 2Q24 3Q23 Financial Results ($ in thousands) • Announced definitive merger agre

EX-99.2

3Q24 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

2 Forward-Looking Statements 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

3Q24 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

Byline Bancorp, Inc.

Byline Bancorp, Inc. Exhibit 99.2 Forward-Looking Statements The information included herein may contain “forward-looking statements” within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Any statements about Byline’s expectations, beliefs, plans, strategies, predictions, forecasts, objectives or assumptions of future events or performance are not historical facts and ma

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Exhibit 99.2Forward-Looking Statements The information included herein may contain “forward-looking statements” within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Any statements about Byline’s expectations, beliefs, plans, strategies, predictions, forecasts, objectives or assumptions of future events or performance are not historical facts and may be forward-looking.

2

Exhibit 99.1 Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No. 001-38139) Byline Bancorp, Inc. and first security Bancorp, Inc. Announce Definitive Merger Agreement Chicago & Elmwood Park, IL, September 30, 2024 – Byline Bancorp,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 30, 2024 BYLINE BANCORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 30, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 30, 2024 BYLINE BANCORP

Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No. 001-38139) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Da

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc. (

EX-99.2

2Q24 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

Byline Bancorp, Inc. Reports Second Quarter 2024 Financial Results Net income of $29.7 million, $0.68 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Second Quarter 2024 Financial Results Net income of $29.7 million, $0.68 diluted earnings per share Chicago, IL, July 25, 2024 – Byline Bancorp, Inc. (NYSE: BY), today reported: For the quarter Second Quarter Highlights (compared to 1Q24, unless otherwise specified) 2Q24 1Q24 2Q23 Financial Results ($ in thousands) • ROAA of 1.31%; PTPP ROAA of 2.03%(1) Ne

2 Forward-Looking Statements 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

2Q24 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 25, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 4, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

First Amendment to Second Amended and Restated Term Loan and Revolving Credit Agreement, dated May 24, 2024, but effective May 26, 2024, by and between Byline Bancorp, Inc. and CIBC Bank USA

EXHIBIT 10.1 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED TERM LOAN AND REVOLVING CREDIT AGREEMENT THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED TERM LOAN AND REVOLVING CREDIT AGREEMENT is dated May 24, 2024, but effective May 26, 2024 (the “First Amendment”), and is by and between Byline Bancorp, Inc., a Delaware corporation (“Borrower”), with offices at 180 N. LaSalle Street, 3rd Floor,

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 24, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc.

Byline Bancorp, Inc. Reports First Quarter 2024 Financial Results First quarter net income of $30.4 million, $0.70 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2024 Financial Results First quarter net income of $30.4 million, $0.70 diluted earnings per share Chicago, IL, April 25, 2024 – Byline Bancorp, Inc. (NYSE: BY), today reported: For the quarter First Quarter Highlights 1Q24 4Q23 1Q23 Financial Results ($ in thousands) • ROAA of 1.36% Net interest income $ 85,541 $ 86,285 $ 75,718 Non-interest

EX-99.2

1Q24 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

2 Forward-Looking Statements 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

1Q24 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 25, 2024 BYLINE BANCORP, IN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 25, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Def

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 3, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

BY / Byline Bancorp, Inc. / Estate of Daniel L. Goodwin - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Information Statement Pursuant to Rules 13d-1 Under the Securities Exchange Act of 1934 (Amendment No. )* Byline Bancorp, Inc. (Name of Issuer) Common Stock, Par Value of $0.01 Per Share (Title of Class of Securities) 124411109 (CUSIP Number) March 11, 2024 Date of Event Which Requires Filing of the

BY / Byline Bancorp, Inc. / Clariond Eugenio - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* Under the Securities Exchange Act of 1934 (Amendment No. 2) Byline Bancorp, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 124411 109 (CUSIP Number) March 19, 2024** (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sc

Form of Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan Restricted Share Award Agreement (Time Based Vesting)

EXHIBIT 10.4 Byline Bancorp, INC. 2017 OMNIBUS INCENTIVE COMPENSATION PLAN RESTRICTED SHARE AWARD AGREEMENT (TIME-BASED VESTING) This Restricted Share Award Agreement (this “Award Agreement”) evidences an award of restricted shares (the “Restricted Shares”) by Byline Bancorp, Inc., a Delaware corporation (“Byline”), under the Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan (as amende

Exhibit 4.2

EXHIBIT 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Our common stock is the only class of our securities that is registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The following description of our common stock is a summary and does not purport to be complete. It is subject

Byline Bancorp, Inc. Compensation Clawback Policy

EXHIBIT 97.1 Compensation Clawback Policy Purpose The Compensation Committee (the “Committee”) of Byline Bancorp, Inc. (“Byline” or the “Company”) believes that it is in the best interest of the Company to reinforce the Company’s compensation philosophy by adopting this compensation clawback policy (the “Policy”) for the adjustment or recovery of incentive-based compensation awards to executive of

First Amendment to Byline Bancorp, Inc. Employee Stock Purchase Plan

EXHIBIT 10.10 FIRST AMENDMENT to the BYLINE BANCORP, INC. EMPLOYEE STOCK PURCHASE PLAN Section 10.05 of the Byline Bancorp, Inc. Employee Stock Purchase Plan (the “Plan”) provides that the Plan may be amended to increase the maximum number of shares which may be issued under any Offering (as defined in the Plan) by action of the Board of Directors of Byline Bancorp, Inc. (the “Company”), subject t

Subsidiaries of Byline Bancorp, Inc. (filed as Exhibit 21.1 to Byline Bancorp, Inc.’s Annual Report on Form 10-K (File No. 001-38139) filed on March 4, 2024 and incorporated herein by reference).

Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2023) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORATION d/b/a Byline Financial Group

Form of Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan Restricted Share Award Agreement (Cliff Time Based Vesting)

EXHIBIT 10.5 Byline Bancorp, INC. 2017 OMNIBUS INCENTIVE COMPENSATION PLAN RESTRICTED SHARE AWARD AGREEMENT (TIME-BASED VESTING) This Restricted Share Award Agreement (this “Award Agreement”) evidences an award of restricted shares (the “Restricted Shares”) by Byline Bancorp, Inc., a Delaware corporation (“Byline”), under the Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan (as amende

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-38139 Byline Bancorp,

BY / Byline Bancorp, Inc. / Mbg Investors I, L.p. - SC 13G/A Passive Investment

SC 13G/A 1 mbg-sc13ga-2024-02-12.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* Under the Securities Exchange Act of 1934 *(Amendment No. 2) BYLINE BANCORP, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 124411 109 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

2 Forward-Looking Statements 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

4Q23 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 25, 2024 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2023 Financial Results Fourth quarter net income of $29.6 million, $0.68 diluted earnings per share; Full year net income of $107.9 million, $2.67 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2023 Financial Results Fourth quarter net income of $29.6 million, $0.68 diluted earnings per share; Full year net income of $107.9 million, $2.67 diluted earnings per share Chicago, IL, January 25, 2024 – Byline Bancorp, Inc. (NYSE: BY), today reported: For the quarter Full Year Highlights 4Q23 3Q23 4Q22 Financial Results (in

EX-99.2

4Q23 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

Byline Bancorp Announces Approval of New Stock Repurchase Program

EXHIBIT 99.1 Byline Bancorp Announces Approval of New Stock Repurchase Program Chicago, IL, December 6, 2023 – Byline Bancorp, Inc. (“Byline” or the “Company”) (NYSE: BY), announced today that its Board of Directors has approved a new stock repurchase program that authorizes the Company to repurchase up to 1.25 million shares of the Company’s outstanding common stock. The shares authorized to be r

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 5, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, I

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 26, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

EX-99.2

3Q23 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

2 Forward-Looking Statements 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

3Q23 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

Byline Bancorp, Inc. Reports Third Quarter 2023 Financial Results Net income of $28.2 million, $0.65 diluted earnings per share

Exhibit 99.1 Byline Bancorp, Inc. Reports Third Quarter 2023 Financial Results Net income of $28.2 million, $0.65 diluted earnings per share Chicago, IL, October 26, 2023 – Byline Bancorp, Inc. (NYSE: BY), today reported: For the quarter Third Quarter Highlights 3Q23 2Q23 3Q222 Financial Results (in thousands) (compared to 2Q23) Net interest income $ 92,452 $ 76,166 $ 68,635 Completed the acquisit

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 3, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fi

Byline Bancorp, Inc. Announces the Appointment of Carlos Ruiz Sacristán to its Board of Directors

EXHIBIT 99.1 Byline Bancorp, Inc. Announces the Appointment of Carlos Ruiz Sacristán to its Board of Directors Chicago, IL, October 4, 2023 – Byline Bancorp, Inc. (NYSE: BY) announced today the appointment of Carlos Ruiz Sacristán to the Boards of Directors of both Byline Bancorp and its subsidiary, Byline Bank, effective immediately. Mr. Ruiz Sacristán has decades of leadership, executive, and op

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 27, 2023 BYLINE BANCORP, INC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 27, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

2 Forward-Looking Statements 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

2Q23 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

EX-99.2

2Q23 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

Byline Bancorp, Inc. Reports Second Quarter 2023 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports Second Quarter 2023 Financial Results Select Second Quarter 2023 Financial Highlights • Net income of $26.1 million, or $0.70 per diluted share • Pre-tax pre-provision return on average assets of 2.23%1 • Return on average assets of 1.41%; Return on average tangible common equity of 16.78%1 • Net interest margin of 4.32% • Efficiency ratio of 52.92% • Tota

Byline Bancorp, Inc. Completes the Merger with Inland Bancorp, Inc.

Byline Bancorp, Inc. Completes the Merger with Inland Bancorp, Inc. Chicago, IL, July 3, 2023 – Byline Bancorp, Inc. (“Byline”) (NYSE: BY), the parent company of Byline Bank, announced today that it has completed its merger with Inland Bancorp, Inc. (“Inland Bancorp”) and its wholly owned bank subsidiary, Inland Bank and Trust. As a result of the transaction, effective July 1, 2023, Inland Bank an

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 1, 2023 BYLINE BANCORP, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 1, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

As filed with the Securities and Exchange Commission on June 7, 2023.

As filed with the Securities and Exchange Commission on June 7, 2023. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Byline Bancorp, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 36-3012593 (State or Other Jurisdiction of Incorporation) (I.R.S. Employer Identificat

Filing Fee Table

Exhibit 107 FORM S-8 Registration Statement Under the Securities Act of 1933 (Form Type) Byline Bancorp, Inc.

First Amendment to Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan (filed as exhibit 99.3 to the Company's Registration Statement on Form S-8 (File No. 333-219143) filed on June 7, 2023 and incorporated herein by reference)

Exhibit 99.3 FIRST AMENDMENT TO 2017 OMNIBUS INCENTIVE COMPENSATION PLAN WHEREAS, Byline Bancorp, Inc., a Delaware corporation, (the “Company”) established an incentive compensation plan known as the 2017 Omnibus Incentive Compensation Plan (the “Plan”) effective June 14, 2017; and WHEREAS, effective upon stockholder approval on June 6, 2023 (the “Amendment Effective Date”), the Company wishes to

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 6, 2023 BYLINE BANCORP, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 6, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 6, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Second Amended and Restated Term Loan and Revolving Credit Agreement, dated as of May 26, 2023, between Byline Bancorp, Inc. and CIBC Bank USA

Exhibit 10.1 SECOND AMENDED and RESTATED TERM LOAN AND Revolving credit AGREEMENT dated as of May 26, 2023 between BYLINE BANCORP, INC., a Delaware corporation as Borrower, and CIBC BANK USA, as Lender 12W937202 VP/#61253042.3 Table of Contents Page SECTION 1. DEFINITIONS 1 1.1. Definitions 2 1.2. Other Interpretive Provisions 12 SECTION 2. COMMITMENT OF LENDER; BORROWING, EVIDENCING OF LOANS 12 2

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 26, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Inland Bancorp, Inc. 2901 Butterfield Road Oak Brook, Illinois 60523 630-218-8000

Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No. 001-38139) Inland Bancorp, Inc. 2901 Butterfield Road Oak Brook, Illinois 60523 630-218-8000 May 17, 2023 Dear Stockholder: On November 30, 2022, Inland Bancorp, Inc. (“Inland Banc

Form of Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan Restricted Share Award Agreement (Performance Based Vesting)(filed as Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q (File No. 001-38139) filed on May 5, 2023 and incorporated herein by reference)

EXHIBIT 10.1 Byline Bancorp, INC. 2017 OMNIBUS INCENTIVE COMPENSATION PLAN RESTRICTED SHARE AWARD AGREEMENT (PERFORMANCE-BASED VESTING) This Restricted Share Award Agreement (this “Award Agreement”) evidences a performance-based award of restricted shares (the “Restricted Shares” or “Shares”) by Byline Bancorp, Inc., a Delaware corporation (“Byline”), under the Byline Bancorp, Inc. 2017 Omnibus In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc.

2 Forward-Looking Statements 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

1Q23 Earnings Presentation Exhibit 99.2 2 Forward-Looking Statements 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

Byline Bancorp, Inc. Reports First Quarter 2023 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2023 Financial Results Select First Quarter 2023 Financial Highlights • Net income of $23.9 million, or $0.64 per diluted share • Pre-tax pre-provision return on average assets of 2.32%1 • Return on average assets of 1.32%; Return on average tangible common equity of 16.20%1 • Net interest margin of 4.38%; down one bp from the previous quarte

EX-99

1Q23 Earnings Presentation Exhibit 99.22 Forward-Looking Statements 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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 27, 2023 BYLINE BANCORP, IN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 27, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Merger Proposal — Your Vote Is Important

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration Statement No. 333-269919 Merger Proposal — Your Vote Is Important On November 30, 2022, Byline Bancorp, Inc., which we refer to as Byline, and Inland Bancorp, Inc., which we refer to as Inland, and Butterfield Acquisition Corporation, a wholly owned subsidiary of Byline (which we refer to as “merger sub”), entered into an Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Def

As filed with the Securities and Exchange Commission on April 24, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on April 24, 2023 Registration No.

BYLINE BANCORP, INC. 180 North LaSalle Street, Suite 300 Chicago, IL 60601

BYLINE BANCORP, INC. 180 North LaSalle Street, Suite 300 Chicago, IL 60601 April 24, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: John Stickel Re: Byline Bancorp, Inc. Registration Statement on Form S-4 (Registration Number 333-269919) Request for Acceleration of Effectiveness Dear Mr. Stickel: Pursuant to Ru

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 17, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 17, 2023 BYLINE BANCORP, IN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 17, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 18, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 5, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Employment Agreement with Thomas J. Bell III (filed as exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-38139) filed on April 11, 2023 and incorporated herein by reference)

Exhibit 10.1 Thomas J. Bell, III Byline Bancorp, Inc. and Byline Bank 180 North LaSalle Street, Suite 3000 Chicago, IL 60601 Re: Employment Terms Dear Tom: On behalf of the Board of Directors of each of Byline Bancorp, Inc., a Delaware corporation (the “Holding Company”), and Byline Bank, an Illinois chartered bank (the “Company”), (the “Holding Company Board” and the “Board”, respectively), I am

Subsidiaries of Byline Bancorp, Inc.

Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2022) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORATION d/b/a Byline Financial Group

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-38139 Byline Bancorp,

Exhibit 4.2

EXHIBIT 4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Our common stock is the only class of our securities that is registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The following description of our common stock is a summary and does not purport to be complete. It is subject

Consent of Piper Sandler & Co.

Exhibit 99.1 1251 AVENUE OF THE AMERICAS, 6TH FLOOR NEW YORK, NY 10020 P 212 466-7800 | TF 800 635-6851 Piper Sandler & Co. Since 1885. Member SIPC and NYSE. CONSENT OF PIPER SANDLER & CO. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Inland Bancorp, Inc. (the “Company”) as an Appendix to the Proxy Statement/Prospectus relating to the proposed merger of the

Subsidiaries of Byline Bancorp, Inc.

Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2022) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORATION d/b/a Byline Financial Group

Form of Proxy Card to be used by Inland Bancorp, Inc.

Exhibit 99.2 Inland Bancorp, Inc. SPECIAL MEETING OF STOCKHOLDERS [●], 2023 at [●] [a.m./p.m.] Central Time THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned stockholder of Inland Bancorp, Inc. (“Inland”) hereby appoints [●] and [●], or any of them, as proxies, each with the power to appoint a substitute, and hereby authorizes them to represent and to vote all such shares

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-4 (Form Type) Byline Bancorp, Inc.

Power of Attorney (included on the signature page to the Registration Statement).*

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 22, 2023 Registration No.

BY / Byline Bancorp Inc / Mbg Investors I, L.p. - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* Under the Securities Exchange Act of 1934 *(Amendment No. 1) BYLINE BANCORP, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 124411 109 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

BYLINE BANCORP, INC. 180 North LaSalle Street, Suite 300 Chicago, IL 60601

BYLINE BANCORP, INC. 180 North LaSalle Street, Suite 300 Chicago, IL 60601 February 2, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: David Lin Re: Byline Bancorp, Inc. Registration Statement on Form S-3 (Registration Number 333-268793) Request for Acceleration of Effectiveness Dear Mr. Lin: Pursuant to Rule 46

As filed with the Securities and Exchange Commission on January 30, 2023

As filed with the Securities and Exchange Commission on January 30, 2023 Registration No.

January 30, 2023

CORRESP 1 filename1.htm Chicago New York Washington, DC London San Francisco Los Angeles Singapore Dallas Miami vedderprice.com January 30, 2023 VIA EDGAR Mr. David Lin U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-0303 Re: Byline Bancorp, Inc. Registration Statement on Form S-3 Filed December 14, 2022 File No. 333-268793 (the “Re

Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2022 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports Fourth Quarter and Full Year 2022 Financial Results Select Fourth Quarter 2022 Financial Highlights • Net income of $24.4 million, or $0.65 per diluted share • Net interest margin of 4.39%; up 36 bps from the previous quarter • Pre-tax pre-provision return on average assets of 2.05% • Return on average assets of 1.33%; Return on tangible common equity of 1

2 Forward-Looking Statements 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

Byline Bancorp, Inc. 4Q22 Earnings Presentation January 26, 2022 Exhibit 99.2 2 Forward-Looking Statements 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

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 26, 2023 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

EX-99.2

Byline Bancorp, Inc. 4Q22 Earnings Presentation January 26, 2022 Exhibit 99.22 Forward-Looking Statements 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

Inland Bancorp, Inc. 2901 Butterfield Road Oak Brook, Illinois 60523 630-218-8000

Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No. 001-38139) Inland Bancorp, Inc. 2901 Butterfield Road Oak Brook, Illinois 60523 630-218-8000 Dear Inland Bancorp, Inc. Stockholders: We are pleased to announce that your Board of D

BY / Byline Bancorp Inc / Clariond Eugenio - SC 13G/A Passive Investment

SC 13G/A 1 brhc10046314sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* Under the Securities Exchange Act of 1934 (Amendment No. 1) Byline Bancorp, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 124411 109 (CUSIP Number) December 29, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to

Filing Fee Table**

EX-FILING FEES 6 tm2231798d1ex-filingfees.htm EX-FILING FEES Exhibit 107 Calculation of Filing Fee Table Form S-3 (Form Type) Byline Bancorp, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price per Unit Maximum

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 (for senior debt securities). **

Exhibit 25.1 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ? U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 (for subordinated debt securities).**

Exhibit 25.2 securities and exchange commission Washington, D.C. 20549 FORM T-1 Statement of Eligibility Under The Trust Indenture Act of 1939 of a Corporation Designated to Act as Trustee Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) ? U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821036 I.R.S. E

As filed with the Securities and Exchange Commission on December 14, 2022

As filed with the Securities and Exchange Commission on December 14, 2022 Registration No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 7, 2022 BYLINE BANCORP,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 7, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp Announces Approval of New Stock Repurchase Program

EXHIBIT 99.1 Byline Bancorp Announces Approval of New Stock Repurchase Program Chicago, IL, December 12, 2022 – Byline Bancorp, Inc. (“Byline” or the “Company”) (NYSE: BY), announced today that its Board of Directors has approved a new stock repurchase program that authorizes the Company to repurchase up to 1.25 million shares of the Company’s outstanding common stock. The shares authorized to be

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 30, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 30, 2022 BYLINE BANCORP,

Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No.: 001-38139) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 D

Byline Bancorp, Inc. and Inland Bancorp, Inc. Announce Definitive Merger Agreement

Exhibit 99.1 Filed by Byline Bancorp, Inc. Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Byline Bancorp, Inc. (Commission File No.: 001-38139) Byline Bancorp, Inc. and Inland Bancorp, Inc. Announce Definitive Merger Agreement Chicago & Oak Brook, IL, November 30, 2022 – Byline Bancorp, Inc. (“Byli

A Compelling Partnership November 30, 2022

A Compelling Partnership November 30, 2022 Forward-Looking Statements The information included herein may contain ?forward-looking statements? within the meaning of the U.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, I

Q3 2022 Conference Call

Q3 2022 Conference Call Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.

EX-99.2

Exhibit 99.2 Q3 2022 Conference CallForward-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 of

Byline Bancorp, Inc. Reports Third Quarter 2022 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports Third Quarter 2022 Financial Results Select Third Quarter 2022 Financial Highlights ? Net income of $22.7 million, or $0.61 per diluted share ? Net interest income of $68.9 million and $12.0 million of non-interest income ? Total revenue1 of $80.9 million ? Net interest margin of 4.04% ? Return on average assets of 1.26% ? Efficiency ratio of 55.11% ? Orig

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 27, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 7, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fi

Second Amendment to First Amended and Restated Revolving Credit Agreement, dated as of October 7, 2002, by and between Byline Bancorp, Inc. and CIBC Bank USA

EXHIBIT 10.1 SECOND AMENDMENT TO FIRST AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT This Second Amendment to First Amended and Restated Revolving Credit Agreement (the ?Second Amendment?) is made and entered into as of October 7, 2022, but effective October 7, 2022, by and between Byline Bancorp, Inc., a Delaware corporation (?Borrower?), with offices at 180 N. LaSalle Street, 3rd Floor, Chicag

Certificate of Elimination of 7.50% Fixed-to-Floating Noncumulative Perpetual Preferred Stock Series B

EXHIBIT 3.5 CERTIFICATE OF ELIMINATION OF THE 7.50% FIXED-TO-FLOATING NONCUMULATIVE PERPETUAL PREFERRED STOCK, SERIES B ($0.01 Par Value) OF BYLINE BANCORP, INC. Pursuant to Section 151(g) of the General Corporation Law of the State of Delaware Byline Bancorp, Inc., a corporation organized and existing under the laws of the State of Delaware (the ?Company?), in accordance with the provisions of Se

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc. (

Byline Bancorp, Inc. Announces Chief Financial Officer Transition Plan

Exhibit 99.3 Byline Bancorp, Inc. Announces Chief Financial Officer Transition Plan Chicago, IL, July 28, 2022 ? Byline Bancorp, Inc. (?Byline? or the ?Company?) (NYSE: BY), the parent company of Byline Bank (?Byline Bank?), announced today that Thomas J. Bell, III, currently Senior Vice President, Treasurer, and a member of Byline?s executive leadership team, will succeed Lindsay Corby as Chief F

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 25, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Q2 2022 Conference Call

Q2 2022 Conference Call Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.

EX-99.2

Byline Bancorp, Inc. Reports Second Quarter 2022 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports Second Quarter 2022 Financial Results Select Second Quarter 2022 Financial Highlights ? Net income of $20.3 million, or $0.54 per diluted share ? Net interest income of $61.6 million and $14.2 million of non-interest income ? Total revenue1 of $75.8 million ? Net interest margin of 3.76% ? Return on average assets of 1.17% ? Efficiency ratio of 55.29% ? No

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 7, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

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, fo

Investor Presentation ? June 2022 Exhibit 99.1 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 statem

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 6, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc.

Byline Bancorp, Inc. Reports First Quarter 2022 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2022 Financial Results Select First Quarter 2022 Financial Highlights ? Net income of $22.3 million, or $0.58 per diluted share ? Net interest income of $58.7 million and $19.4 million non-interest income ? Total revenue1 of $78.2 million ? Net interest margin of 3.81% ? Return on average assets of 1.35% ? Efficiency ratio of 54.96% ? Non-int

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 28, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Q1 2022 Conference Call

Q1 2022 Conference Call Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 28, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Byline Bancorp, Inc. Reports First Quarter 2022 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2022 Financial Results Select First Quarter 2022 Financial Highlights ? Net income of $22.3 million, or $0.58 per diluted share ? Net interest income of $58.7 million and $19.4 million non-interest income ? Total revenue1 of $78.2 million ? Net interest margin of 3.81% ? Return on average assets of 1.35% ? Efficiency ratio of 54.96% ? Non-int

Q4 2021 Conference Call

Q4 2021 Conference Call Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.???) Filed by the Registrant?x Filed by a Party other than the Registrant?? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Def

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.???) Filed by the Registrant?? Filed by a Party other than the Registrant?? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by Rul

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 18, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Byline Bancorp, Inc. Announces the Appointment of Margarita Hugues Vélez to its Board of Directors and the Retirement of Board Member Steven M. Rull

EX-99.1 2 by-ex991.htm EX-99.1 Exhibit 99.1 Byline Bancorp, Inc. Announces the Appointment of Margarita Hugues Vélez to its Board of Directors and the Retirement of Board Member Steven M. Rull Chicago, IL, April 22, 2022 – Byline Bancorp, Inc. (NYSE: BY) announced today the appointment of Margarita Hugues Vélez to the Boards of Directors of both Byline Bancorp and its subsidiary, Byline Bank, effe

Subsidiaries of Byline Bancorp, Inc.

Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2021) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORATION d/b/a Byline Financial Group

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-38139 Byline Bancorp,

Description of the Company’s Securities Registered Under Section 12 of the Securities Act of 1934

EXHIBIT 4.2 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Our common stock is the only class of our securities that is registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?). The following description of our common stock is a summary and does not purport to be complete. It is subject

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 15, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

Q4 2021 Conference Call

Q4 2021 Conference Call Forward-Looking Statements This communication contains forward-looking statements within the meaning of the U.

Byline Bancorp, Inc. Reports Full Year and Fourth Quarter 2021 Financial Results

Exhibit 99.1 Byline Bancorp, Inc. Reports Full Year and Fourth Quarter 2021 Financial Results Select Full Year 2021 Financial Highlights ? Net income of $92.8 million, or $2.40 per diluted share ? Net interest margin of 3.84% ? Return on average assets of 1.40% ? Efficiency ratio of 57.27% ? Originated loans and leases increased $425.9 million, or 11.6% ? Non-interest-bearing deposits increased $3

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 27, 2022 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

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, fo

Investor Presentation ? December 2021 Exhibit 99.1 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 st

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 14, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

Byline Bank Announces Plan to Consolidate Six Branches and Disposition of Real Estate

Exhibit 99.1 Byline Bank Announces Plan to Consolidate Six Branches and Disposition of Real Estate Chicago, IL, December 10, 2021 ? Byline Bancorp, Inc. (NYSE: BY) (the ?Company? or ?Byline?), the parent company of Byline Bank (the ?Bank?), today announced plans to continue to optimize its branch network, dispose of a portfolio of owned real estate properties and reduce the amount of office square

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 10, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, I

Byline Bancorp, Inc. Reports Third Quarter 2021 Financial Results

Byline Bancorp, Inc. Page 1 of 19 Exhibit 99.1 Byline Bancorp, Inc. Reports Third Quarter 2021 Financial Results Select Third Quarter 2021 Highlights ? Net income of $25.3 million, or $0.66 per diluted share ? Net interest margin of 3.91% ? Return on average assets of 1.53%, as adjusted1 1.59% ? Efficiency ratio of 54.18% ? Non-interest bearing deposits 41.1% of total deposits ? Originated loans a

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, fo

Q3 2021 Conference Call Exhibit 99.2 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 o

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 28, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

First Amendment to First Amended and Restated Revolving Credit Agreement, dated as of October 8, 2021, by and between Byline Bancorp, Inc. and CIBC Bank USA.

FIRST AMENDMENT TO FIRST AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT THIS FIRST AMENDMENT TO FIRST AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT is dated October 8, 2021 (the ?First Amendment?), and is by and between Byline Bancorp, Inc.

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 8, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fi

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 21, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

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, fo

Investor Presentation ? September 2021 Exhibit 99.1 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 s

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc. (

Byline Bancorp, Inc. Reports Second Quarter 2021 Financial Results

EX-99.1 2 by-20210729ex991.htm EX-99.1 Byline Bancorp, Inc. Page 1 of 20 Exhibit 99.1 Byline Bancorp, Inc. Reports Second Quarter 2021 Financial Results Select Second Quarter 2021 Highlights  Net income of $28.5 million, or $0.73 per diluted share  Net interest margin of 3.74%  Return on average assets of 1.70%, as adjusted1 1.78%  Efficiency ratio of 51.95%  Non-interest bearing deposits 41.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 29, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

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, fo

EX-99.2 3 by-20210729ex992.htm EX-99.2 Q2 2021 Conference Call Exhibit 99.2 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

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 8, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

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, fo

Investor Presentation ? May 2021 Exhibit 99.1 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 stateme

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 10, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission File

Quarterly Report - 1Q21 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 Byline Bancorp, Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 29, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Byline Bancorp, Inc. Reports First Quarter 2021 Financial Results

Byline Bancorp, Inc. Page 1 of 20 Exhibit 99.1 Byline Bancorp, Inc. Reports First Quarter 2021 Financial Results Select First Quarter 2021 Highlights ? Net income of $21.8 million, or $0.56 per diluted share ? Net interest margin of 3.77% ? Return on average assets of 1.34%, as adjusted1 1.37% ? Efficiency ratio of 51.25% ? Non-interest bearing deposits 40.1% of total deposits ? Originated loans a

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, fo

Q1 2021 Conference Call Exhibit 99.2 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 o

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14

Employment Agreement, dated December 19, 2019, by and among Byline Bank and Thomas Abraham

EX-10.1 2 by-ex1016.htm EX-10.1 Exhibit 10.1 Thomas Abraham Re:Employment Terms Dear Tom: On behalf of the Board of Directors (the “Board”) of Byline Bank, an Illinois chartered bank (the “Company”), I am pleased to confirm your continued employment with the Company on the terms set forth in this letter (“Agreement”). 1.Term. The term of this Agreement commences upon your written acceptance below

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 13, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission Fil

Subsidiaries of Byline Bancorp, Inc.

EX-21.1 4 by-ex21110.htm EX-21.1 Exhibit 21.1 Subsidiaries of Byline Bancorp, Inc. (as of December 31, 2020) Subsidiary Jurisdiction of Incorporation/Organization/Charter Byline Bank Illinois Subsidiaries of Byline Bank: Lily Pond LLC (Series LLC) Illinois Lily Pond R Series, LLC Illinois Lily Pond V Series, LLC Illinois Lily Pond C Series, LLC Illinois Lily Pond T Series, LLC Illinois BFG CORPORA

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-38139 Byline Bancorp,

Form of Byline Bancorp, Inc. 2017 Omnibus Incentive Compensation Plan Restricted Share Award Agreement (Performance Based Vesting)(filed as Exhibit 10.10 to the Company's Annual Report on Form 10-K (File No. 001-38139) filed on March 4, 2021 and incorporated herein by reference)

EXHIBIT 10.10 Byline Bancorp, INC. 2017 OMNIBUS INCENTIVE COMPENSATION PLAN RESTRICTED SHARE AWARD AGREEMENT (PERFORMANCE-BASED VESTING) This Restricted Share Award Agreement (this ?Award Agreement?) evidences a performance-based award of restricted shares (the ?Restricted Shares? or ?Shares?) by Byline Bancorp, Inc., a Delaware corporation (?Byline?), under the Byline Bancorp, Inc. 2017 Omnibus I

Description of the Company’s Securities Registered Under Section 12 of the Securities Act of 1934

Exhibit 4.2 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Our common stock is the only class of our securities that is registered under Section 12 of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?). The following description of our common stock is a summary and does not purport to be complete. It is subject

Employment Agreement with Roberto R. Herencia (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-38139) filed on February 22, 2021 and incorporated herein by reference)

EX-10.1 2 by-ex10115.htm EX-10.1 Exhibit 10.1 February 19, 2021 Roberto R. Herencia Byline Bancorp, Inc. and Byline Bank 180 N. LaSalle St.,Suite 300 Chicago, IL 60601 Re: Employment Terms Dear Roberto: On behalf of the Board of Directors of each of Byline Bancorp, Inc., a Delaware corporation (the “Holding Company”), and Byline Bank, an Illinois chartered bank (the “Bank”), (the “Holding Company

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 2, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

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, fo

EX-99.1 2 by-ex99115.htm EX-99.1 Investor Presentation – February 2021 Exhibit 99.1 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 per

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, fo

EX-99.1 2 by-ex99115.htm EX-99.1 Q4 2020 Conference Call Exhibit 99.1 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 th

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp, Inc. Reports Full Year and Fourth Quarter 2020 Financial Results

EX-99.1 2 by-ex9916.htm EX-99.1 Byline Bancorp, Inc. Page 1 of 22 Byline Bancorp, Inc. Reports Full Year and Fourth Quarter 2020 Financial Results Select Full Year 2020 Highlights • Net income of $37.5 million, or $0.96 per diluted share • Net interest margin of 3.80% • Pre-tax pre-provision return on average assets1 of 1.75%, as adjusted1 1.83% • Efficiency ratio of 58.40% • Originated loans and

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition - 4Q20 ER 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 28, 2021 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 11, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

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, fo

EX-99.1 2 by-ex9916.htm EX-99.1 Investor Presentation – December 2020 Exhibit 99.1 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 perf

Financial Statements and Exhibits, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): December 8, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp Announces Approval of New Stock Repurchase Program

Exhibit 99.1 Byline Bancorp Announces Approval of New Stock Repurchase Program Chicago, IL, December 10, 2020 – Byline Bancorp, Inc. (NYSE: BY) announced today that its Board of Directors has approved a new stock repurchase program that authorizes the Company to repurchase up to 1.25 million shares of the Company’s outstanding common stock. The shares authorized to be repurchased represent approxi

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38139 ne Byline Bancorp

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 22, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

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, fo

Q3 2020 Conference Call Exhibit 99.1 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 o

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): October 22, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission F

Byline Bancorp, Inc. Reports Third Quarter 2020 Financial Results

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 22, 2020 BYLINE BANCORP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 22, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): September 18, 2020 BYLINE BANCORP, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-38139 36-3012593 (Commission