Columbia Banking System, Inc. director Steven R. Gardner filed a Form 144 notice of proposed sale on October 29, 2026, covering 10,522 shares of common stock to be sold through Fidelity Brokerage Services LLC on NASDAQ.

Key Highlights

  • Proposed seller: Steven R. Gardner, listed as a Director of Columbia Banking System, Inc.
  • Shares proposed for sale: 10,522 shares of common stock, with an aggregate market value of $328,616.53 according to the filing.
  • Broker named: Fidelity Brokerage Services LLC, 900 Salem Street, Smithfield, RI 02917.
  • Approximate date of sale: October 29, 2026, on NASDAQ.
  • Total shares outstanding: 282,902,268 shares of common stock, as reported in the filing.
  • No sales in prior 3 months: The filing indicates "Nothing to Report" for securities sold during the past 3 months.

Columbia Banking System Director Files Rule 144 Proposed Sale Notice

According to the Form 144 filing submitted on October 29, 2026, Steven R. Gardner, identified as a Director of Columbia Banking System, Inc. (NASDAQ:COLB), proposed to sell 10,522 shares of the company's common stock. The aggregate market value of those shares was stated as $328,616.53. The issuer's address is listed as 1301 A Street, Tacoma, Washington 98402, and the company's SEC File Number is 000-20288.

The filing details three separate acquisition transactions underlying the shares proposed for sale. According to the document, 180 shares were acquired via open market purchase on August 1, 2011, and 1,650 shares were similarly acquired on August 4, 2011, both listed as cash transactions with the issuer. A third block of 8,692 shares was acquired through an open market purchase on October 3, 2024, also for cash. None of the securities were noted as gifts.

The notice was signed by Wade Moss, identified as "a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Steven R. Gardner." By signing, the filing states that Gardner "does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed." The filing reports no sales of Columbia Banking System securities by Gardner during the three months preceding this notice.

What Was Disclosed

Columbia Banking System director Steven R. Gardner filed a Form 144 notice proposing to sell 10,522 shares of common stock valued at $328,616.53, with Fidelity Brokerage Services LLC as the named broker and an approximate sale date of October 29, 2026.