STOCK TITAN

Byline Bancorp (NYSE: BY) director adds 100 shares at $38.30

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

BYLINE BANCORP, INC. (BY) director William G. Kistner reported purchasing 100 shares of common stock on 2026-08-19 at $38.30 per share in an open market or private transaction. The shares are held indirectly through the William G. Kistner Trust dated June 22, 1973, which now holds 14,289 shares, while Kistner also holds 1,036 shares directly.

Positive

  • None.

Negative

  • None.
Insider KISTNER WILLIAM G
Role Director
Bought 100 shs ($4K)
Type Security Shares Price Value
Purchase Common stock 100 $38.30 $4K
holding Common stock -- -- --
Holdings After Transaction: Common stock — 14,289 shares (Indirect, William G. Kistner Trust Date June 22, 1973); Common stock — 1,036 shares (Direct)
Shares purchased 100 shares Common stock purchased on 2026-08-19
Purchase price $38.30 per share Price for the 100-share common stock purchase
Indirect holdings after transaction 14,289 shares Common stock held indirectly via William G. Kistner Trust
Direct holdings after transaction 1,036 shares Common stock held directly by William G. Kistner
indirect ownership financial
"The shares are reported as indirect ownership through the William G. Kistner Trust"
open market or private transaction financial
"transaction code description indicates a purchase in open market or private transaction"
Form 4 regulatory
"Insider transactions are disclosed on Form 4 filed with the SEC"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
trust financial
"Shares are held through the William G. Kistner Trust Date June 22, 1973"
A trust is a legal setup in which one party (the trustee) holds and manages assets—like cash, stocks or property—on behalf of other people (beneficiaries) according to instructions from the person who created it (the grantor). Think of it as a locked box with a keyholder who must follow written rules; for investors it matters because trusts influence who controls and benefits from assets, affect taxes and succession, and can change how quickly or transparently shares are bought, sold or voted.

FAQ

What insider transaction did BY (BYLINE BANCORP, INC.) report for William G. Kistner?

William G. Kistner reported a purchase of 100 BY common shares on 2026-08-19. The transaction was coded as a purchase in an open market or private transaction, indicating an increase in his indirect holdings through a trust.

At what price did the BY director buy shares in this Form 4 filing?

The director bought BY shares at $38.30 per share. This per-share price applies to the 100 shares purchased on 2026-08-19 in an open market or private transaction reported in the Form 4.

How many BY shares does William G. Kistner now hold indirectly?

Following the reported transaction, the William G. Kistner Trust holds 14,289 BY common shares. These shares are reported as indirect ownership, separate from Kistner’s directly owned BY shares.

How many BY shares does William G. Kistner own directly after this transaction?

After the reported activity, William G. Kistner directly owns 1,036 BY common shares. This direct position is listed separately from his 14,289 shares held indirectly through the William G. Kistner Trust.

Was the BY insider transaction made under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmatively selected. There is no accompanying footnote stating that this 100-share purchase was executed pursuant to a pre-arranged 10b5-1 trading plan.

What type of transaction code is used in this BY Form 4 filing?

The purchase of BY shares is reported with transaction code P. This code denotes a purchase in an open market or private transaction, distinguishing it from grants, option exercises, gifts, or other non-market transactions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates
SEC Form 4
FORM 4UNITED 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
KISTNER WILLIAM G

(Last)(First)(Middle)
180 NORTH LASALLE STREET
SUITE 300

(Street)
CHICAGO ILLINOIS 60601

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
BYLINE BANCORP, INC. [ BY ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/19/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)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)
CodeVAmount(A) or (D)Price
Common stock08/19/2026P100A$38.314,289IWilliam G. Kistner Trust Date June 22, 1973
Common stock1,036D
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 (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)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 (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Thomas J. Bell III, Attorney-in-Fact08/20/2026
** Signature of Reporting PersonDate
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)