Byline Bancorp Inc. director Brogan Ptacin filed a Form 144 notice on October 29, 2026, disclosing a proposed sale of 16,100 shares of Class A Common Stock through UBS Financial Services Inc.

Key Highlights

  • Seller: Brogan Ptacin, a director of Byline Bancorp Inc., acting as trustee of the Brogan M. Ptacin Rev Trust DTD 03/24/2004.
  • Shares proposed for sale: 16,100 shares of Class A Common Stock, with an aggregate market value of $626,619.84.
  • Shares outstanding: 45,186,420 shares of Class A Common Stock outstanding, according to the filing.
  • Approximate sale date: October 29, 2026, through broker UBS Financial Services Inc., Weehawken, NJ.
  • Original acquisition: The 16,100 shares were acquired on June 10, 2014, via a merger with First Bank & Trust, with payment described as "N/A."
  • No prior sales reported: The filing indicates nothing to report for securities sold during the past three months.

Ptacin Trust Proposes Rule 144 Sale of Byline Bancorp Shares Held Since 2014 Merger

According to the Form 144 notice filed with the U.S. Securities and Exchange Commission, Brogan Ptacin, a director of Byline Bancorp Inc. (NYSE:BY), intends to sell 16,100 shares of the company's Class A Common Stock. The filing states the proposed sale would be executed through UBS Financial Services Inc., located at 1000 Harbor Blvd, 3rd Floor, Weehawken, NJ 07086, with an approximate sale date of October 29, 2026. The aggregate market value of the shares to be sold is listed as $626,619.84.

The filing discloses that the shares were originally acquired on June 10, 2014, through a merger with First Bank & Trust, with the issuer identified as the person from whom the securities were acquired. A remark in the filing notes that "Brogan Ptacin is selling stock from Brogan M. Ptacin Rev Trust DTD 03/24/2004 as trustee," indicating the shares are held within a revocable trust for which Ptacin serves as trustee.

The filing further states that no sales of Byline Bancorp securities were made by Ptacin during the three months preceding this notice. The Form 144 was signed by Joseph Cassidy, identified as attorney-in-fact for Brogan Ptacin, acting on behalf of UBS Financial Services Inc. As required under Rule 144, the signing party represented having no knowledge of material adverse information regarding the issuer's current and prospective operations that has not been publicly disclosed.

What Was Disclosed

A Form 144 notice was filed on October 29, 2026, by Byline Bancorp director Brogan Ptacin, proposing to sell 16,100 shares of Class A Common Stock acquired in the 2014 First Bank & Trust merger, with an aggregate market value of $626,619.84.