HERSETH MARY JO S. 4

What Happened Mary Jo S. Herseth, a director of Byline Bancorp, Inc. (BY), acquired 300 shares in an open-market purchase on March 16, 2026. The shares were bought at $30.83 each for a total reported transaction value of $9,249. This was a purchase (code P) reported on a Form 4 — purchases are often viewed as a more informative signal than routine sales but do not, by themselves, prove intent.

Key Details

• Transaction date and price: 2026-03-16, 300 shares @ $30.83 each.
• Total transaction value: $9,249.
• Shares owned after transaction: Not specified in the provided summary; see the Form 4 filing for total holdings.
• Filing timeliness: Reported on 2026-03-16 (same day), indicating a timely filing in the summary provided.
• Notes: Transaction reported as an open-market/private purchase (code P). No 10b5-1 plan, tax withholding, or other footnotes were included in the provided data.

Context Open-market purchases by directors can signal confidence but should be weighed with other information (size of purchase, past trading, company fundamentals). This is a relatively small buy in dollar terms; retail investors may view it as a minor insider purchase rather than a definitive endorsement. For full details, consult the SEC Form 4 (Accession 0001772766-26-000002).