Columbia Banking System Announces Quarterly Cash Dividend

What Happened
Columbia Banking System, Inc. (the parent company of Columbia Bank) filed an 8-K on August 14, 2026, announcing that its Board of Directors approved a quarterly cash dividend of $0.37 per common share. The dividend is payable on September 14, 2026, to shareholders of record as of August 28, 2026. The announcement was issued via a press release attached to the filing.

Key Details

• Dividend amount: $0.37 per common share (quarterly cash dividend)
• Record date: August 28, 2026
• Payment date: September 14, 2026
• Filing date / disclosure: Form 8-K filed August 14, 2026; press release included as Exhibit 99.1

Why It Matters
A declared quarterly dividend provides income to shareholders and signals the Board’s decision to return capital to investors. For current and prospective shareholders, the record and payment dates determine eligibility and expected cash flow timing. The 8-K is a formal SEC disclosure ensuring the market and investors are informed of the dividend decision.