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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 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 | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 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 | — |
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.