Transaction · 0001739310-26-000004

KISTNER WILLIAM G

KISTNER WILLIAM G, DIR, reported an open-market or private purchase at BYLINE BANCORP, INC. involving 100.000000 shares for an estimated $3830.00. Reported holdings after the transaction were 14289.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PDIR

BYBYLINE BANCORP, INC.

Filing timeAug 20

Trade dateAug 19, 2026

Filing · SECView on SEC

InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows

Price at filing

$38.33

Pre-filing

1mo ago -1.2%1w ago +2.3%1d ago +2.0%

Returns since

7d -0.2%30d -1.7%90d -1.7%180d -1.7%1y -1.7%

BY price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards

BY since 2026-08-20Filed 16 days ago · 30 days of pre-filing context shaded

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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative

Type: Buy
Identifier: 0001739310-26-000004
Transaction date: Aug 19, 2026
Shares: 100 sh
Estimated value: $383k
Holdings after: 14.2k sh

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M

Director Buy

+22score

Filing-only score

+22

Compact filing score computed from stored Form 4 facts. Version v1.

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No

Footnotes & amended

No footnotes recorded.

Original filing · 0001739310-26-000004

Related transactions

0 other filings

Same reporting owner

Recent company activity

0 recent txs