Columbia Banking System, Inc. filed a current report on October 22, 2026, disclosing the release of its third quarter 2026 financial results and an accompanying investor slide presentation.

Key Highlights

  • Event date: Columbia Banking System, Inc. issued its third quarter 2026 earnings press release on October 22, 2026.
  • Investor presentation: An investor slide presentation was issued the same day, intended for review during the earnings conference call on October 22, 2026.
  • Quarter covered: The reported results pertain to the period ended September 30, 2026.
  • Follow-on filing: Final financial statements and additional analyses are to be included in a future quarterly report covering the quarter ended September 30, 2026.
  • Signatory: The filing was signed by Ivan A. Seda, Executive Vice President and Chief Financial Officer.
  • Exchange listing: Columbia Banking System's common stock, no par value, trades on NASDAQ:COLB.

Columbia Banking System Announces Third Quarter 2026 Results and Investor Materials

Columbia Banking System, Inc., a Washington-incorporated bank holding company headquartered at 1301 A Street, Tacoma, Washington, filed a current report with the SEC on October 22, 2026, covering two disclosure items. According to the filing, the company issued a press release on that date announcing its third quarter 2026 financial results. That press release is attached to the filing as Exhibit 99.1. The company noted that final financial statements and additional analyses for the quarter ended September 30, 2026 will be included in a subsequent quarterly report covering that period.

The filing also disclosed, under Regulation FD, that the company issued an investor slide presentation on October 22, 2026, which it stated it intends to review during its earnings release conference call held on the same date. That presentation is attached as Exhibit 99.2. As the filing explains, both the press release and the investor presentation "shall not be deemed 'filed' for purposes of Section 18 of the Securities Exchange Act of 1934" and are not incorporated by reference into filings under the Securities Act or the Exchange Act except as expressly specified. The report was signed by Ivan A. Seda, Executive Vice President and Chief Financial Officer.

What Was Disclosed

Columbia Banking System filed a current report on October 22, 2026, attaching a third quarter 2026 earnings press release and an investor presentation as exhibits. The company indicated that comprehensive financial statements for the quarter ended September 30, 2026 will follow in a quarterly report.