Columbia Banking Launches $1.2B Share Buyback and Sets NIM Guidance

Key Facts

1Columbia Banking System forecasts its Q4 net interest margin (NIM) to be around 4.05%.

2The company launched a new share buyback program valued at $1.2 billion.

Columbia Banking System launched a new share buyback program valued at $1.2 billion. Seeking Alpha reported that the company forecasts its fourth-quarter net interest margin (NIM) to be around 4.05%, following the release of its Q3 2026 earnings report.

COLB closed at $29.2 on October 21, 2026, with the stock reaching a session high of $29.24 and a low of $28.91. These capital return initiatives and margin guidance are part of the company's broader capital management and outlook strategy to drive shareholder value.