LYTIR

Company · BY

Byline Bancorp, Inc.

Name as listed on its exchange; filed with the SEC as BYLINE BANCORP, INC.

Nasdaq's symbol directory lists BY on the New York Stock Exchange as “Byline Bancorp, Inc. Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 3 occasions ($60K); insiders sold on 4 occasions ($13.2M); 1 planned-sale notice; 1 filing by holders of 5% or more; 3 company reports (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $60K in total; Insider sales: $13.2M in total.Aug: Insider purchases $15KAug: Insider sales $12.6MOct: Insider purchases $45KOct: Insider sales $627KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $60KInsider sales below: $13.2M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. MBG INVESTORS I, L.P. sold on 1 day latest Aug 7, 2026 sold $11.7M
  2. HERENCIA ROBERTO R, CHIEF EXECUTIVE OFFICER sold on 1 day latest Aug 13, 2026 sold $774K
  3. Ptacin Brogan, HEAD OF COMMERCIAL BANKING sold on 1 day latest Oct 29, 2026 sold $627K
  4. Rose Dana, CHIEF HUMAN RESOURCES OFFICER sold on 1 day latest Aug 12, 2026 sold $94K
  5. Stewart Pamela C bought on 1 day latest Oct 26, 2026 bought $45K
  6. HERSETH MARY JO S. bought on 1 day latest Aug 19, 2026 bought $12K
  7. KISTNER WILLIAM G bought on 1 day latest Aug 19, 2026 bought $4K
Every trade (7)
  1. SELLPtacin Brogan, HEAD OF COMMERCIAL BANKING sold Oct 29, 2026 16,100 shares 2 legs combined filing $627K
  2. BUYStewart Pamela C bought Oct 26, 2026 1,160 shares filing $45K
  3. BUYHERSETH MARY JO S. bought Aug 19, 2026 300 shares filing $12K
  4. BUYKISTNER WILLIAM G bought Aug 19, 2026 100 shares filing $4K
  5. SELLHERENCIA ROBERTO R, CHIEF EXECUTIVE OFFICER sold Aug 13, 2026 19,750 shares filing $774K
  6. SELLRose Dana, CHIEF HUMAN RESOURCES OFFICER sold Aug 12, 2026 2,421 shares filing $94K
  7. SELLMBG INVESTORS I, L.P. sold Aug 7, 2026 300,000 shares filing $11.7M

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. Brogan Ptacin filed Oct 29, 2026 Director 16,100 shares planned sale date 10/29/2026 filing $627K

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. MBG INVESTORS I, L.P. filed Aug 17, 2026 Schedule 13G/A passive filing 25.5%

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition filing Oct 22, 2026
  2. Departure or appointment of directors or officers; Regulation FD disclosure filing Oct 8, 2026
  3. Regulation FD disclosure filing Oct 6, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.