TACOMA, Wash. - Columbia Banking System Inc. announced Thursday that it has revised its fourth-quarter earnings to reflect a loss of $136,000, or 1 cent a share, rather than a previously reported profit of $3.8 million, or 32 cents a share.

The adjustment is the result of a $6 million increase in loan-loss provisions to $18.8 million, stemming solely from the "deterioration in a single substantial credit relationship," the company said in a news release.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.