Megan Biggam - Jun 10, 2025 Form 4 Insider Report for BYLINE BANCORP, INC. (BY)

Role: EVP HEAD OF COMMUNITY BANKING
Signature: /s/ Thomas J. Bell III, Attorney-in-Fact
Stock symbol: BY
Transactions as of: Jun 10, 2025
Transactions value $: -$56,223
Form type: 4
Date filed: 6/12/2025, 11:19 AM
Previous filing: Jun 11, 2025
Next filing: Jun 23, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BIGGAM MEGAN	EVP HEAD OF COMMUNITY BANKING	180 NORTH LASALLE STREET, SUITE 300, CHICAGO	/s/ Thomas J. Bell III, Attorney-in-Fact	2025-06-12	0001709994

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BY	Common stock	Options Exercise	$40.4K	+3.61K	+20.48%	$11.18	21.2K	Jun 10, 2025	Direct
transaction	BY	Common stock	Sale	-$96.6K	-3.61K	-17%	$26.75	17.6K	Jun 10, 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BY	Stock Option	Options Exercise	$0	-3.61K	-8.99%	$0.00	36.6K	Jun 10, 2025	Common Stock	40.2K	$11.18	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.