BY Insider Trading Activity and SEC Form 4 Filings
BY insider trading summary
Over the past 12 months, insiders at Byline Bancorp, Inc. (BY) reported 6 open-market purchases worth $99K by 5 insiders and 6 sales worth $25.0M by 5 insiders on SEC Form 4. Net insider selling was $24.9M.
Latest BY insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Oct 29, 2026 | Brogan Ptacin | Head of Commercial Banking | Sell | $73K (1,871 @ $39.05) |
| Oct 29, 2026 | Brogan Ptacin | Head of Commercial Banking | Sell | $554K (14,229 @ $38.90) |
| Oct 26, 2026 | Pamela C Stewart | Insider | Buy | $45K (1,160 @ $38.61) |
| Aug 19, 2026 | William G Kistner | Insider | Buy | $4K (100 @ $38.30) |
| Aug 19, 2026 | Mary Jo S. Herseth | Insider | Buy | $12K (300 @ $38.40) |
| Aug 13, 2026 | Roberto R Herencia | Chief Executive Officer | Sell | $774K (19,750 @ $39.21) |
| Aug 12, 2026 | Dana Rose | Chief Human Resources Officer | Sell | $94K (2,421 @ $39.00) |
| Aug 7, 2026 | Valle Perochena Antonio Del | Insider | Sell | $11.7M (300,000 @ $39.10) |
| Aug 7, 2026 | Mbg Investors I, L.P. | Insider | Sell | $11.7M (300,000 @ $39.10) |
| Mar 16, 2026 | Mary Jo S. Herseth | Insider | Buy | $9K (300 @ $30.83) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.