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Employee Benefit Plans
 12 Months Ended
Dec. 31, 2024
Retirement Benefits [Abstract]  
Employee Benefit Plans

Note 15—Employee Benefit Plans

The Company’s defined contribution 401(k) savings plan (the "Plan") covers substantially all employees that have completed certain service requirements. The Board of Directors determines the amount of any discretionary profit sharing contribution made to the Plan. There were no profit sharing contributions to the Plan for the years ended December 31, 2024, 2023, or 2022. The net assets of the Plan are not included in the Consolidated Statements of Financial Condition.

The 401(k) employer match contribution is equal to 100% of the first 3% and 50% for the next 2% contributed to the Plan by employees. Total expense for the employer contributions made to the Plan were $3.6 million, $3.3 million, and $3.0 million during the years ended December 31, 2024, 2023, and 2022, respectively.

On June 14, 2017, the Company’s Board of Directors adopted the Byline Bancorp, Inc. Employee Stock Purchase Plan (the "ESPP") within the meaning of Section 423 of the Internal Revenue Code, as amended. The ESPP allows employees to purchase shares of the Company’s common stock at a discount to the market price of the stock through automatic payroll deductions. A total of 200,000 shares of common stock were reserved for sale under the ESPP, subject to adjustment in accordance with the terms of the ESPP. On June 7, 2022, an additional 200,000 shares were reserved. The Company issued 63,880 shares in connection with the ESPP for the year ended December 31, 2024, leaving 88,644 available at December 31, 2024. The Company recognized $394,000, $388,000, and $169,000 of compensation expense for the years ended December 31, 2024, 2023, and 2022, respectively.