InsiderTrades

Form 4 for BY BYLINE BANCORP, INC.

Accepted 2026-08-04 13:41:06 ET · period of report 2026-08-03 · accession 0001368185-26-000004 · 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
D 2026-08-04 13:41 2026-08-03 BY Ptacin Brogan HEAD OF COMMERCIAL BANKING A - Grant $12.70 +9,450 35.3K +37% +$120.0K
D 2026-08-04 13:41 2026-08-03 BY Ptacin Brogan HEAD OF COMMERCIAL BANKING D - Sale to Iss $39.61 -9,450 25.9K -27% -$374.3K
D 2026-08-04 13:41 2026-08-03 BY Ptacin Brogan HEAD OF COMMERCIAL BANKING M - OptEx $0.00 -9,450 0 -100% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common stock 2026-08-03 A A 9,450 $12.70 35,309 D — —
2 Common Common stock 2026-08-03 D D 9,450 $39.61 25,859 D — —
3 Derivative Common Stock 2026-08-03 M D 9,450 $0.00 0 D $12.70 · 2018-05-31 to 2026-12-20 9,450 Common Stock