Byline Bancorp, Inc.

BY·NYSE·$33.40Share Price as of 11/2·$2BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/01/26 10-KFY 202502/27/26 10-QQ3 ended 09/30/2511/07/25 10-QQ2 ended 06/30/2508/07/25

Disclosures

8-KCurrent report10/22/26 8-KCurrent report10/08/26 8-KCurrent report10/06/26 8-KCurrent report07/23/26 8-KCurrent report06/03/26

Prospectuses and Registrations

S-8Registration of securities for employees06/03/26 S-3ASRAutomatic shelf registration04/07/26 424B3Prospectus11/21/25 S-4/ARegistration (business combination, amended)10/31/25 S-4Registration (business combination)09/04/25

Proxies

DEFA14AAdditional proxy materials04/24/26 DEF 14ADefinitive proxy04/20/26 DEF 14ADefinitive proxy04/21/25 DEFA14AAdditional proxy materials04/21/25 DEF 14ADefinitive proxy04/22/24

Ownership

144Proposed sale of securities10/29/26 Form 4Insider transaction10/26/26 Form 4Insider transaction08/20/26 Form 4Insider transaction08/20/26 SC 13G/ABeneficial ownership (amended)08/17/26

Other

ARSAnnual report to shareholders04/20/26 UPLOADLetter from the SEC09/15/25 DD08/19/25 ARSAnnual report to shareholders04/21/25 EFFECTRequest for effectiveness02/03/25