BYLINE BANCORP, INC.

For the period ended Sep 30, 2026. Filed Nov 6, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 6, 2026

BY$38.79-0.1%Stored close · as of Nov 10, 2026

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Unregistered Sales of Equity Securities and Use of Proceeds

On December 11, 2025, we announced that our Board of Directors approved a new stock repurchase program authorizing the purchase of up to an aggregate of 2,250,000 shares of our outstanding common stock. The program will be in effect from January 1, 2026 until December 31, 2026, unless terminated earlier. The shares may, at the discretion of management, be repurchased from time to time in open market purchases as market conditions warrant or in privately negotiated transactions. We are not obligated to purchase any shares under the program, and the program may be discontinued at any time. The actual timing, number and share price of shares purchased under the repurchase program will be determined by us at our discretion and will depend on a number of factors, including the market price of our stock, general market and economic conditions and applicable legal requirements.

The table below includes information regarding purchases of our common stock during the quarter ended September 30, 2026.

Issuer Purchases of Equity Securities
Maximum Number of
	Total	Average	Total Number of Shares	Shares that
	Number of	Price	Purchased as Part of a	May Yet Be
	Shares	Paid per	Publicly Announced	Purchased Under the
	Purchased(1)	Share	Plan or Program	Plan or Program
July 1 - July 31, 2026	13,523	$38.86	12,464	1,644,800
August 1 - August 31, 2026	364,428	38.98	364,260	1,280,540
September 1 - September 30, 2026	146,927	37.71	145,256	1,135,284
Total	524,878	$38.62	521,980

(1)

Includes 2,898 shares acquired pursuant to the Company’s 2026 Omnibus Incentive Compensation Plan. Under the terms of the compensation plan, we can accept previously owned shares of common stock to be surrendered to satisfy the exercise price of stock options, the settlement of restricted stock awards and tax withholding obligations upon vesting and/or exercise.

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