BY (Byline Bancorp, Inc. Common Stock)

Insider Trading Activity

Every open-market purchase and sale reported by BY officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.

Form 4 Filings
50
most recent
Open-Market Buys
16
code P
Sales
7
code S
Reporting Insiders
25
current holders
BY — Recent Form 4 Transactions (latest 2026-08-20)
FiledInsiderRole TypeSharesValue
2026-08-20 WILLIAM G KISTNER Director Buy
2026-08-20 MARY JO S. HERSETH Director Buy
2026-08-14 ROBERTO R HERENCIA CHIEF EXECUTIVE OFFICER Sell
2026-08-12 Dana Rose CHIEF HUMAN RESOURCES OFFICER Sell
2026-08-11 MBG INVESTORS I, L.P. 10%+ Owner Sell
2026-08-11 PEROCHENA ANTONIO DEL VALLE Director Sell
2026-08-04 Brogan Ptacin HEAD OF COMMERCIAL BANKING MIXED
2026-06-10 Velez Margarita Hugues Director A
2026-06-10 CARLOS RUIZ SACRISTAN Director A
2026-06-03 Velez Margarita Hugues Director F
2026-05-04 WILLIAM G KISTNER Director Buy
2026-04-20 THOMAS ABRAHAM PRESIDENT, SBC A
2026-03-16 MARY JO S. HERSETH Director Buy
2026-03-02 John Barkidjija HEAD OF CRE & SPECIALTY FIN Sell
2026-02-24 Brian F Doran General Counsel A
2026-02-24 Alberto J Paracchini PRESIDENT MIXED
2026-02-24 THOMAS ABRAHAM PRESIDENT, SBC MIXED
2026-02-24 Maria Sherylle A Olano SVP, CHIEF ACCOUNTING OFFICER MIXED
2026-02-24 Dana Rose CHIEF HUMAN RESOURCES OFFICER MIXED
2026-02-24 ROBERTO R HERENCIA CHIEF EXECUTIVE OFFICER MIXED
2026-02-24 Nicolas Mando CHIEF TECHNOLOGY & OPERATIONS MIXED
2026-02-24 John Barkidjija HEAD OF CRE & SPECIALTY FIN MIXED
2026-02-24 MICHELLE LYNN JOHNSON CHIEF RISK OFFICER MIXED
2026-02-24 Thomas J Bell III EVP CHIEF FINANCIAL OFFICER MIXED
2026-02-24 MEGAN BIGGAM EVP HEAD OF COMMUNITY BANKING MIXED
2026-02-24 Mark Fucinato CHIEF CREDIT OFFICER MIXED
2026-02-24 Brogan Ptacin HEAD OF COMMERCIAL BANKING MIXED
2026-02-17 Brian F Doran General Counsel Buy
2026-01-29 PHILLIP R. CABRERA Director Buy
2025-12-10 MARY JO S. HERSETH Director J
2025-10-29 THOMAS ABRAHAM PRESIDENT, SBC Sell
2025-10-28 WILLIAM G KISTNER Director Buy
2025-09-15 Dana Rose CHIEF HUMAN RESOURCES OFFICER Sell
2025-09-02 Maria Sherylle A Olano SVP, CHIEF ACCOUNTING OFFICER F
2025-08-29 Brogan Ptacin HEAD OF COMMERCIAL BANKING MIXED
2025-08-11 WILLIAM G KISTNER Director Buy
2025-06-24 ROBERTO R HERENCIA CHIEF EXECUTIVE OFFICER MIXED
2025-06-24 Thomas J Bell III EVP CHIEF FINANCIAL OFFICER MIXED
2025-06-23 MEGAN BIGGAM EVP HEAD OF COMMUNITY BANKING MIXED
2025-06-13 MARY JO S. HERSETH Director Buy
2025-06-13 PEROCHENA ANTONIO DEL VALLE Director Buy
2025-06-13 WILLIAM G KISTNER Director Buy
2025-06-13 STEVEN P. KENT Director Buy
2025-06-13 ROBERTO R HERENCIA CHIEF EXECUTIVE OFFICER Buy
2025-06-12 PHILLIP R. CABRERA Director Buy
2025-06-12 MEGAN BIGGAM EVP HEAD OF COMMUNITY BANKING MIXED
2025-06-11 MEGAN BIGGAM EVP HEAD OF COMMUNITY BANKING MIXED
2025-06-04 Velez Margarita Hugues Director MIXED
2025-03-07 MARY JO S. HERSETH Director Buy
2025-03-06 WILLIAM G KISTNER Director Buy
BY — Current Insider Holders
InsiderRole Shares HeldValue
Director 11,575,953
10%+ Owner 11,535,145
Director 473,620
CHIEF EXECUTIVE OFFICER 414,218
PRESIDENT 188,990
Director 185,400
Director 118,750
EVP CHIEF FINANCIAL OFFICER 59,702
EVP and CFO 54,139
HEAD OF COMMERCIAL BANKING 53,059
Director 46,364
PRESIDENT, SBC 45,539
Chief Credit Officer 34,941
EVP HEAD OF COMMUNITY BANKING 34,172
Former EVP & President of SBC 33,477
CHIEF CREDIT OFFICER 25,623
Director 20,000
HEAD OF CRE & SPECIALTY FIN 19,243
Director 19,100
SVP, CHIEF ACCOUNTING OFFICER 18,768
Director 15,325
CHIEF TECHNOLOGY & OPERATIONS 15,297
CHIEF HUMAN RESOURCES OFFICER 11,605
CHIEF RISK OFFICER 10,332
Director 8,722
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the BY quote page; the site-wide leaderboard is on the insider transactions hub.