Perochena Antonio del Valle - 07 Aug 2026 Form 4 Insider Report for BYLINE BANCORP, INC. (BY)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: BY
Reported as of: 07 Aug 2026
Net transaction value: -$11,730,000
SEC form: 4
Accepted by SEC: 11 Aug 2026, 16:05:10 UTC
Prior SEC filing: 13 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Thomas J. Bell, III, Attorney-in-Fact

Key filing fact

Perochena Antonio del Valle filed Form 4 for BYLINE BANCORP, INC. (BY) on 11 Aug 2026.

Key facts

This page summarizes Perochena Antonio del Valle's Form 4 filing for BYLINE BANCORP, INC. (BY).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 11 Aug 2026, 16:05.

Change

Previous filing in this sequence was filed on 13 Jun 2025.
Current net transaction value: -$11,730,000.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001709907 Primary reporting owner

DEL VALLE PEROCHENA ANTONIO

Relationship: Director, 10%+ Owner
Address: 180 NORTH LASALLE STREET, SUITE 300, CHICAGO
Signature: /s/ Thomas J. Bell, III, Attorney-in-Fact
Signature date: 11 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BY transaction

Common stock

Sale

Transaction value: $11,730,000
Shares: -300,000
Change %: -2.5%
Price: $39.10
Shares after: 11,535,145
Date: 07 Aug 2026
Ownership: By MBG Investors I, L.P.
Footnotes: F1

BY holding

Common stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 40,808
Date: 07 Aug 2026
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Sale to and repurchase by Byline Bancorp, Inc. ("the Issuer") of 300,000 shares of Common Stock (the "Shares") pursuant to a Stock Repurchase Agreement (the "Stock Repurchase Agreement") dated as of August 7, 2026 between MBG Investors I, L.P. and the Issuer. Under the Stock Repurchase Agreement, the Issuer agreed to purchase the Shares at a price of $39.10 per Share, which price was determined based on the five (5) day average closing price for the Common Stock on the NYSE for the period from July 27, 2026 through July 31, 2026.