🕵️ Byline Bancorp, Inc. ($BY)
SEC insider & ownership activity, last 12 months · CIK 1702750 · every row links its SEC filing
Over the last 12 months insiders sold $25.1M against $60K of open-market buying. Del Valle Perochena Antonio sold $11.7M in discretionary trades (Aug). 1 planned sale is pending, the largest $375K (Brogan Ptacin). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
4 buyers, $60K (7 lots) · 6 sellers, $25.1M (7 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Del Valle Perochena Antonio | 0 | – | 1 | $11.7M | Aug 7, 2026 |
| MBG Investors I, L.P. | 0 | – | 1 | $11.7M | Aug 7, 2026 |
| Roberto R. Herencia | 0 | – | 1 | $774K | Aug 13, 2026 |
| Abraham Thomas | 0 | – | 2 | $629K | Oct 28, 2025 |
| John Barkdidjija | 0 | – | 1 | $146K | Feb 26, 2026 |
| Rose Dana | 0 | – | 1 | $94K | Aug 12, 2026 |
| Brian F. Doran | 1 | $25K | 0 | – | Feb 17, 2026 |
| Herseth Mary Jo S. | 2 | $21K | 0 | – | Aug 19, 2026 |
| William G. Kistner | 3 | $9K | 0 | – | Aug 19, 2026 |
| Phillip R. Cabrera | 1 | $5K | 0 | – | Jan 28, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| MBG Investors I, L.P. | 26.7% | 13G | Feb 13, 2025 | filing ↗ | |
| Antonio Del Valle Perochena | 26.7% | 13G | Feb 13, 2025 | filing ↗ | |
| Antonio Del Valle Perochena | 25.6% | 13G | Aug 17, 2026 | filing ↗ | |
| MBG Investors I, LP | 25.5% | 13G | Aug 17, 2026 | filing ↗ | |
| Dimensional Fund Advisors LP | 5.1% | 13G | Oct 9, 2025 | filing ↗ | |
| BlackRock, Inc. | 5.0% | 13G | Oct 17, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Roberto Herencia | $785K | Aug 13, 2026 | filing ↗ |
| DanaRose | $95K | Aug 12, 2026 | filing ↗ |
| Brogan Ptacin | $375K | Aug 3, 2026 | filing ↗ |
| John Barkdidjija | $160K | Feb 26, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 23, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 2, 2026 | filing ↗ |
| New financial obligation (2.03) | May 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 22, 2026 | filing ↗ |
| Earnings (2.02) | Apr 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 23, 2026 | filing ↗ |
| Earnings (2.02) | Jan 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 22, 2026 | filing ↗ |
| Other events (8.01) | Dec 11, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 11, 2025 | filing ↗ |
| Earnings (2.02) | Oct 23, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 23, 2025 | filing ↗ |
| Other events (8.01) | Oct 1, 2025 | filing ↗ |