InsiderTrades

Form 4 for BY BYLINE BANCORP, INC.

Accepted 2026-08-11 16:05:10 ET · period of report 2026-08-07 · accession 0001709907-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
I 2026-08-11 16:05 2026-08-07 BY DEL VALLE PEROCHENA ANTONIO Dir, 10% S - Sale $39.10 -300.0K 11.54M -3% -$11.73M

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common stock 2026-08-07 S D 300,000 $39.10 11,535,145 I By MBG Investors I, L.P. — — (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.