Columbia Banking System Announces Q3 2026 Earnings Call

What Happened

• Columbia Banking System, Inc. (COLB) filed a Form 8-K on September 30, 2026, disclosing it will hold a quarterly earnings conference call on Thursday, October 22, 2026 at 2:00 p.m. PT (5:00 p.m. ET).
• Management will discuss Columbia’s third quarter 2026 financial results and provide an update on recent activities. A press release with the call information is attached as Exhibit 99.1 and incorporated by reference.

Key Details

• Filing date: September 30, 2026 (Form 8-K, Item 7.01 Regulation FD Disclosure).
• Conference call: Thursday, October 22, 2026 at 2:00 p.m. PT / 5:00 p.m. ET.
• Purpose: Discuss Q3 2026 financial results and recent company activities.
• Press release announcing the call is filed as Exhibit 99.1.

Why It Matters

• The call will be the first public management commentary on Columbia’s Q3 2026 quarterly results — a potential market-moving event for shareholders and analysts.
• Investors who follow earnings, revenue, and other quarterly results should note the date/time to hear management’s discussion and any forward-looking updates. The 8-K itself does not include financial results; those details will be presented on the call and in subsequent disclosures.