Sec Form 4/A Filing - YOHANAN ROBERT R. @ BYLINE BANCORP, INC. - 2018-11-28

FORM 4/A Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person YOHANAN ROBERT R. 2. Issuer Name and Ticker or Trading Symbol BYLINE BANCORP, INC. [ BY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 180 N. LASALLE ST., SUITE 300 3. Date of Earliest Transaction (MM/DD/YY) 11/28/2018 (Street) CHICAGO, IL60661 4. If Amendment, Date Original Filed (MM/DD/YY) 11/30/2018 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 11/28/2018 S 1,000 D $ 20.95 377,725 ( 1 ) I By Robert R. Yohanan Revocable Trust Common Stock 127,895 ( 2 ) D Common Stock 3,195 I By The Yohanan Family Partnership ( 3 ) Common Stock 299,773 I By Dublin Family Partnership, LLC ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other YOHANAN ROBERT R. 180 N. LASALLE ST. SUITE 300 CHICAGO, IL60661 X Signatures /s/Ana Casanueva, Attorney-in-Fact for Robert R. Yohanan 12/03/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 amendment is filed solely to reflect that the shares were sold by the Robert R. Yohanan Revocable Trust, and not by Dublin Family Partnership, LLC, as mistakenly reported on the original Form 4 filed on 11/30/18. ( 2 )18,372 of these shares are owned jointly with Reporting Person's spouse. Shares owned and held solely by the Reporting Person's spouse are not included in this report, and the Reporting Person disclaims beneficial ownership of those shares. ( 3 )These securities are held by The Yohanan Family Partnership (the "Family Partnership") for which the Reporting Person is a partner. The Reporting Person disclaims beneficial ownership of the securities held by the Family Partnership except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all the reported securities for purposes of Section 16 or for any other purpose. ( 4 )These securities are held by Dublin Family Partnership, LLC ("Dublin") for which the Reporting Person is a member. The Reporting Person disclaims beneficial ownership of the securities held by the Partnership except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all the reported securities for purposes of Section 16 or for any other purpose.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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