Latest filingAug 20, 2026Most recent Form 4
BY
BYLINE BANCORP, INC.
NYSEFinancialsState Commercial Banks
Insider activity for last month from 08/05 to 09/05. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$1.53M2 buys
Total selling$00 sells
Net open-market+$1.53M2 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period2transactions
- P · Open-market buys · dominant2 · 100%
Activity by reported role
A joint filing can contribute to multiple roles2transactions
- Director · dominant2 · 100%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeHerseth Mary Jo S.Common stock · Indirect · The Herseth Family Revocable Trust Dated 12/02/25
19,100Aug 19, 2026
Kistner William GCommon stock · Indirect · William G. Kistner Trust Date June 22, 1973
14,289Aug 19, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 05 → Sep 05
LessMore
Top insiders
By absolute net value across the selected period- HS+$11.5k
- KG+$3.8k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
BY transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| BY | KISTNER WILLIAM G | DIR | buy | 100 | $383k | P | −1.7% | 08/20 | 08/19 | |
| BY | HERSETH MARY JO S. | DIR | buy | 300 | $1.15M | P | −1.7% | 08/20 | 08/19 |
BYLINE BANCORP, INC. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at BYLINE BANCORP, INC.?
KISTNER WILLIAM G, HERSETH MARY JO S..
When was the latest reported open-market purchase?
Kistner William G reported a buy on Aug 19, 2026 valued at $383k. Read the SEC filing.
When was the latest reported open-market sale?
No code-S sale is available for this period.
What is the recent purchase and sale balance?
Net open-market buying in the selected period was $15,348.50. This describes filed transactions, not a bullish rating.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.