TACOMA, Wash., Jan. 29, 2015 /PRNewswire/ -- Melanie Dressel, President and Chief Executive Officer of Columbia Banking System and Columbia Bank (NASDAQ: COLB) ("Columbia") said today upon the release of Columbia's fourth quarter 2014 earnings, "We continued to build on the momentum created by our recent acquisitions and the outstanding efforts of our bankers whose activities resulted in record-setting full year earnings and loan production for the quarter and year." Ms. Dressel continued, "Our entire team also worked hard preparing for and closing the Intermountain Community Bancorp acquisition which we announced during the third quarter."

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Significant Influences on the Quarter Ended December 31, 2014

Our reported net income for the current quarter was impacted by $5.4 million, or $0.10 per diluted share, in acquisition and accounting related items. Specifically, on a pre-tax basis, these items consisted of $4.6 million in acquisition-related expenses, $948 thousand of impact from FDIC loan accounting, and $2.8 million in provision for loan and lease losses related to the establishment of an allowance for loans acquired in the Intermountain transaction.

As the Intermountain transaction also impacted comparability of our balance sheet to prior periods, the table below is provided to summarize the amounts recognized as of the transaction date for each major class of assets acquired and liabilities assumed:



                                         November 1, 2014
                                         ----------------

                                          (in thousands)


    Purchase price as of November 1,
     2014                                                 $131,935

    Recognized amounts of identifiable
     assets acquired and (liabilities
     assumed), at fair value:

    Cash and cash equivalents                              $47,283

    Investment securities                         299,458

    Federal Home Loan Bank stock                    2,124

    Acquired loans                                502,595

    Interest receivable                             4,656

    Premises and equipment                         20,696

    Other real estate owned                         2,752

    Core deposit intangible                        10,900

    Other assets                                   35,353

    Deposits                                    (736,795)

    Other borrowings                             (22,904)

    Securities sold under agreements to
     repurchase                                  (59,043)

    Other liabilities                            (13,725)
                                                  -------

    Total fair value of identifiable net
     assets                                        93,350
                                                   ------

    Goodwill                                               $38,585
                                                           =======

Balance Sheet
Loans were $5.45 billion at December 31, 2014, up $622.4 million, or 13% from $4.82 billion at September 30, 2014. The increase in loans was driven by the acquisition of Intermountain as well as strong organic loan growth of approximately $120 million during the current quarter. Securities were $2.13 billion at December 31, 2014, an increase of $488.6 million, or 30% from $1.64 billion at September 30, 2014, again, primarily due to the acquisition of Intermountain. Compared to the prior year end period, loans increased $928.1 million, or 21%, during 2014. The growth during the year was comprised of $502.6 million acquired with Intermountain and $425.5 million of organic growth.

Total deposits at December 31, 2014 were $6.92 billion, an increase of $680.3 million, or 11% from $6.24 billion at September 30, 2014 due to the acquisition of Intermountain. Core deposits comprised 96% of total deposits and were $6.62 billion at December 31, 2014. The average rate on interest bearing deposits for the quarter was 0.08% compared to 0.07% for the third quarter of 2014. The slight uptick is attributed to the deposits obtained in the Intermountain acquisition.

Asset Quality

At December 31, 2014, nonperforming assets to total assets were 0.62% or $53.6 million, compared to 0.67%, or $49.9 million, at September 30, 2014. The $3.7 million increase was due to $5.2 million in nonperforming assets established through the Intermountain transaction, partially offset by a $1.5 million decrease in pre-acquisition nonperforming assets.

The following table sets forth, at the dates indicated, information regarding nonaccrual loans and total nonperforming assets:



                                December 31, 2014                  September 30, 2014  December 31, 2013

                                                                                  (1)               (1)
                                                                                  ---               ---

                                               (in thousands)

    Nonaccrual loans:

    Commercial business                                    $16,799                       $11,490         $12,609

    Real estate:

    One-to-four family
     residential                                  2,822                          3,513             2,667

    Commercial and multifamily
     residential                                  7,847                          8,468            11,043
                                                  -----                          -----            ------

    Total real estate                            10,669                         11,981            13,710

    Real estate construction:

    One-to-four family
     residential                                    465                          1,031             3,705
                                                    ---                          -----             -----

    Total real estate
     construction                                   945                          1,031             3,705

    Consumer                                      2,939                          3,496             3,991
                                                  -----                          -----             -----

    Total nonaccrual loans                       31,352                         27,998            34,015

    Other real estate owned and
     other personal property
     owned (1)                                   22,225                         21,941            36,037

    Total nonperforming assets                             $53,577                       $49,939         $70,052
                                                           =======                       =======         =======

    (1) Reclassified to conform to the
     current period's presentation. The
     reclassification was limited to
     including historically reported
     covered OREO and OPPO in the line
     item for "Other real estate owned
     and personal property owned".

The following table provides an analysis of the Company's allowance for loan and lease losses ("ALLL") at the dates and for the periods indicated:



                                Three Months Ended December             Twelve Months Ended December
                                            31,                                    31,
                              ----------------------------           -----------------------------

                                   2014               2013 (1)

                                                                          2014                  2013 (1)
                                                                          ----                   -------

                                                      (in thousands)

    Beginning balance                      $67,871                      $78,581                            $72,454 $82,300

    Charge-offs:

    Commercial business           (991)               (1,912)          (4,289)                  (4,942)

    One-to-four family
     residential real estate       (23)                  (37)            (230)                    (228)

    Commercial and
     multifamily residential
     real estate                      -                 (489)          (2,993)                  (2,543)

    One-to-four family
     residential real estate
     construction                     -                     -                -                    (133)

    Consumer                      (518)                 (980)          (2,774)                  (2,242)

    Purchased credit impaired
     (1)                       (3,086)               (3,822)         (14,436)                  (13,852)
                                 ------                 ------           -------                   -------

    Total charge-offs           (4,618)               (7,240)         (24,722)                  (23,940)

    Recoveries:

    Commercial business             449                  1,124             3,007                     2,443

    One-to-four family
     residential real estate         56                     90               159                       270

    Commercial and
     multifamily residential
     real estate                    224                    524               940                     1,033

    One-to-four family
     residential real estate
     construction                 1,426                     16             1,930                     2,665

    Consumer                        422                    200             1,353                       553

    Purchased credit impaired
     (1)                         2,031                  2,841             7,721                     7,231
                                  -----                  -----             -----                     -----

    Total recoveries              4,608                  4,795            15,110                    14,195
                                  -----                  -----            ------                    ------

    Net charge-offs                (10)               (2,445)          (9,612)                  (9,745)

    Provision (recapture) for
     loan and lease losses
     (1)                         1,708                (3,682)            6,727                     (101)
                                  -----                 ------             -----                      ----

    Ending balance                         $69,569                      $72,454                            $69,569 $72,454
                                           =======                      =======                            ======= =======

    (1) Reclassified to conform to the
     current period's presentation. The
     reclassification was limited to
     including charge-off, recovery, and
     provision activity related to the
     purchased credit impaired loan
     portfolio.

The allowance for loan losses to period end loans was 1.28% at December 31, 2014 compared to 1.41% at September 30, 2014. Excluding acquired loans, the allowance at December 31, 2014 represented 1.21% of non-acquired loans, compared to 1.27% of non-acquired loans at September 30, 2014. The allowance to loans, excluding acquired loans, is a non-GAAP financial measure. See the section titled "Non-GAAP Financial Measures" on the last pages of this earnings release for the reconciliation of the allowance for loan losses to period end loans, excluding acquired loans. The decline reflects strong organic loan growth as well as continued improvement in the Company's asset quality metrics.

For the fourth quarter of 2014, Columbia recorded a provision for loan and lease losses of $1.7 million. For the comparable quarter last year, the Company had a provision recapture of $3.7 million. The provision for loan and lease losses recorded during the current quarter was primarily driven by establishing an allowance for loans acquired in the Intermountain transaction.

Net Interest Margin ("NIM")

Columbia's net interest margin (tax equivalent) of 4.50% for the fourth quarter of 2014 was down 35 basis points from the third quarter of 2014 margin of 4.85%. The decrease was due to the combination of the acquisition of Intermountain, the premium amortization adjustment on mortgage-backed securities recorded in the third quarter of 2014 and continued repricing within the loan portfolio. Compared to the fourth quarter of 2013, Columbia's net interest margin decreased 53 basis points from 5.03%, due, in part, to lower incremental accretion on acquired loans, which was $13.3 million for the prior year quarter, and only $8.8 million for the current quarter as well as the previously mentioned loan repricing.

Columbia's operating net interest margin (tax equivalent)((1) )decreased to 4.17% for the fourth quarter of 2014, compared to 4.22% for the third quarter of 2014. The decrease was primarily due to a combination of a continuing low rate environment and the acquisition of Intermountain.

The following table shows the impact to interest income resulting from accretion of income on acquired loan portfolios as well as the net interest margin and operating net interest margin for the periods presented:



                         Three Months Ended                              Twelve Months Ended
                         ------------------                              -------------------

                      December 31,                         December 31,                         December 31,     December 31,

                                          2014                      2013                                    2014         2013
                                          ----                      ----                                    ----         ----

                                               (dollars in thousands)

    Incremental
     accretion income
     due to:

    FDIC purchased
     credit impaired
     loans                                        $3,796                                      $6,540                   $20,224 $29,815

    Other FDIC
     acquired loans                         10                       237                                     484        2,211

    Other acquired
     loans                               4,957                     6,540                                  21,093       26,200
                                         -----                     -----                                  ------       ------

    Incremental
     accretion income                             $8,763                                     $13,317                   $41,801 $58,226
                                                  ======                                     =======                   ======= =======


    Net interest
     margin (tax
     equivalent)                         4.50%                    5.03%                                   4.76%       5.16%

    Operating net
     interest margin
     (tax equivalent)
     (1)                                4.17%                    4.31%                                   4.21%       4.32%

    (1) Operating net interest
     margin (tax equivalent) is a
     non-GAAP financial measure.
     See the section titled "Non-
     GAAP Financial Measures" on the
     last pages of this earnings
     release for the reconciliation
     of operating net interest
     margin (tax equivalent) to net
     interest margin.

Impact of FDIC Acquired Loan Accounting

The following table illustrates the impact to earnings associated with Columbia's FDIC acquired loan portfolios:



                                                  FDIC Acquired Loan Activity


                              Three Months Ended                              Twelve Months Ended
                              ------------------                              -------------------

                   December 31,                             December 31,                          December 31,            December 31,

                           2014                                      2013                                2014                  2013
                           ----                                      ----                                ----                  ----

                                                    (in thousands)

    Incremental
     accretion
     income on
     FDIC
     purchased
     credit
     impaired
     loans                                     $3,796                                 $6,540                      $20,224                   $29,815

    Incremental
     accretion
     income on
     other FDIC
     acquired
     loans                   10                                       237                                 484                 2,211

    Recapture
     (provision)
     for losses on
     FDIC
     purchased
     credit
     impaired
     loans                  542                                     1,582                              (2,877)                3,261

    Change in FDIC
     loss-sharing
     asset              (5,304)                                   (9,571)                            (19,989)              (45,017)

    FDIC clawback
     liability
     benefit
     (expense)                8                                       (36)                               (294)                 (278)

    Pre-tax
     earnings
     impact                                    $(948)                              $(1,248)                    $(2,452)                $(10,008)
                                                =====                                =======                      =======                  ========

The incremental accretion income on FDIC purchased credit impaired loans represents the amount of income recorded above the contractual rate stated in the individual loan notes and stems from the discount established at the time these loan portfolios were acquired. At December 31, 2014, the accretable yield on purchased credit impaired loans was $73.8 million. Accretable yield is subject to change based upon expected future loan cash flows, which are remeasured by Columbia on a quarterly basis.

The $5.3 million change in the FDIC loss-sharing asset in the current quarter negatively affected noninterest income and consisted primarily of $5.1 million in amortization expense. Additional details of the components of the change in the FDIC loss-sharing asset are provided in tabular format on the following page in the section titled "Noninterest Income". With the expiration of our two most significant FDIC loss-sharing agreements on March 31, 2015, the amortization of our loss-sharing asset will continue to decline.

Fourth Quarter 2014 Results

Net Interest Income

Net interest income for the fourth quarter of 2014 was $78.8 million, an increase of $2.5 million compared to the third quarter of 2014. This increase was primarily due to the acquired loans and securities from the Intermountain transaction. Compared to the fourth quarter of 2013, net interest income increased by $1.6 million from $77.2 million. The increase from the prior year period is due to the acquired loans and securities from the acquisition of Intermountain and organic loan growth, tempered by the decline in incremental accretion income. For additional information regarding net interest income, see "Average Balances and Rates" tables.

Noninterest Income

Total noninterest income was $15.2 million for the fourth quarter of 2014, a decrease of $745 thousand compared to $15.9 million for the third quarter of 2014. This decrease was due to the gain of $565 thousand recorded during the third quarter related to the deposit premium realized on the sale of three branches to Sound Community Bancorp coupled with an additional $488 thousand in expense associated with the change in FDIC loss-sharing asset during the fourth quarter.

Compared to the fourth quarter of 2013, noninterest income increased by $4.6 million. The increase from the prior year period was primarily due to the expense recorded for the change in FDIC loss-sharing asset, which was $4.3 million less in the current quarter compared to the fourth quarter of 2013.

The change in the FDIC loss-sharing asset is a significant component of noninterest income. The following table reflects the income statement components of the change in the FDIC loss-sharing asset for the periods indicated:



                                      Three Months Ended                      Twelve Months Ended

                                         December 31,                            December 31,
                                         ------------                            ------------

                                               2014                 2013                                   2014       2013
                                               ----                 ----                                   ----       ----

                                                               (in thousands)

    Adjustments reflected in income

    Amortization, net                       (5,071)             (7,259)                               (21,279)  (36,729)

    Loan impairment (recapture)               (434)             (1,265)                                 2,301    (2,609)

    Sale of other real estate                  (75)             (1,101)                                (2,179)   (6,177)

    Write-downs of other real estate            206                 (10)                                 1,065        364

    Other                                        70                   64                                    103        132
                                                ---                  ---

    Change in FDIC loss-sharing asset                 $(5,304)                               $(9,571)           $(19,989)   $(45,019)
                                                       =======                                 =======             ========     ========

Noninterest Expense
Total noninterest expense for the fourth quarter of 2014 was $64.2 million, an increase of $535 thousand, or 1% from $63.6 million for the same quarter in 2013. The small increase from the prior year period was due to additional ongoing noninterest expense resulting from the Intermountain acquisition and increased cost of OREO. These increases were partially offset by lower acquisition-related expenses of $4.6 million for the current quarter compared to $7.9 million for the prior year period. Of the $4.6 million in acquisition-related expenses recorded during the current quarter, $4.5 million related to the recently completed Intermountain acquisition and the remaining $119 thousand related to the West Coast acquisition. Compared to the third quarter of 2014, noninterest expense increased $4.2 million, due to the $1.3 million increase in acquisition-related expenses, an increase in cost of OREO as well as additional ongoing expense resulting from the Intermountain acquisition.

Organizational Update

Ms. Dressel commented, "We feel very fortunate to have added such a qualified team of bankers to the Columbia Bank family as the result of our acquisition of Intermountain. Throughout our footprint, our bankers remain committed to retaining and developing full service relationships with customers. We continue to have opportunity for growth in all of our markets. In particular, the Boise market is one of the areas on which we will concentrate in 2015."

Forbes Ranking 2015

"We are gratified to rank in the top 20 on the annual Forbes list of best banks in the country, based on safety and soundness measures," Ms. Dressel said. "Columbia ranked #17, a significant jump from our previous position of #31 a year ago. In addition, we ranked as the best in Washington State, and second in the Pacific Northwest for the fourth year in a row."

Conference Call Information

Columbia's management will discuss the fourth quarter 2014 results on a conference call scheduled for Thursday, January 29, 2015 at 1:00 p.m. PST (4:00 pm EST). Interested parties may listen to this discussion by calling 1-866-378-3802; Conference ID code #62154937.

A conference call replay will be available from approximately 4:00 p.m. PST on January 29, 2015 through midnight PST on February 5, 2015. The conference call replay can be accessed by dialing 1-855-859-2056 and entering Conference ID code #62154937.

Annual Meeting of Shareholders
Columbia Banking System's Annual Meeting of Shareholders will be held at 1:00 PDT on April 22, 2015, at the William W. Philip Hall at the University of Washington Tacoma., 1900 Commerce Street, Tacoma, Washington 98402. The Hall is named in honor of William W. "Bill" Philip, who had a seminal role in establishing UW Tacoma, and was a co-founder of Columbia Bank.

Directions and parking information are available at www.tacoma.washington.edu/conference.

About Columbia
Headquartered in Tacoma, Washington, Columbia Banking System, Inc. is the holding company of Columbia Bank, a Washington state-chartered full-service commercial bank, with 78 branches in Washington, 60 in Oregon, and 16 in Idaho. For the eighth consecutive year, the bank was named in 2014 as one of Puget Sound Business Journal's "Washington's Best Workplaces." Columbia ranked in the top 20 on the 2015 Forbes list of best banks in the country, as well as ranking the best in Washington and second in the Pacific Northwest for the fourth year in a row.

More information about Columbia can be found on its website at www.columbiabank.com.

Note Regarding Forward-Looking Statements

This news release includes forward looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which management believes are a benefit to shareholders. These forward looking statements describe Columbia's management's expectations regarding future events and developments such as future operating results, growth in loans and deposits, continued success of Columbia's style of banking and the strength of the local economy. The words "will," "believe," "expect," "intend," "should," and "anticipate" and words of similar construction are intended in part to help identify forward looking statements. Future events are difficult to predict, and the expectations described above are necessarily subject to risk and uncertainty that may cause actual results to differ materially and adversely. In addition to discussions about risks and uncertainties set forth from time to time in Columbia's filings with the Securities and Exchange Commission, available at the SEC's website at www.sec.gov and the Company's website at www.columbiabank.com, including the "Risk Factors," "Business" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" sections of our annual reports on Form 10-K and quarterly reports on Form 10-Q, factors that may cause actual results to differ materially from those contemplated by such forward-looking statements include, among others, the following: (1) local, national and international economic conditions may be less favorable than expected or have a more direct and pronounced effect on Columbia than expected and adversely affect Columbia's ability to continue its internal growth at historical rates and maintain the quality of its earning assets; (2) changes in interest rates may reduce interest margins more than expected and negatively affect funding sources; (3) projected business increases following strategic expansion or opening or acquiring new branches may be lower than expected; (4) costs or difficulties related to the integration of acquisitions may be greater than expected; (5) competitive pressure among financial institutions may increase significantly; and (6) legislation or regulatory requirements or changes may adversely affect the businesses in which Columbia is engaged. We believe the expectations reflected in our forward-looking statements are reasonable, based on information available to us on the date hereof. However, given the described uncertainties and risks, we cannot guarantee our future performance or results of operations and you should not place undue reliance on these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. The factors noted above and the risks and uncertainties described in our SEC filings should be considered when reading any forward-looking statements in this release.



    FINANCIAL STATISTICS

    Columbia Banking System, Inc.                                       Three Months Ended                                     Twelve Months Ended

    Unaudited                                                              December 31,                                           December 31,
                                                                           ------------                                           ------------

                                                                   2014                         2013 (1)

                                                                                                                                 2014                         2013 (1)
                                                                                                                                 ----                          -------

    Earnings                                                                 (dollars in thousands except per share amounts)
    --------

    Net interest income                                                        $78,764                                         $77,209                                        $304,048                                     $291,095

    Provision (recapture) for loan and
     lease losses (1)                                                           $1,708                                        $(3,682)                                         $6,727                                       $(101)

    Noninterest income                                                         $15,185                                         $10,612                                         $59,750                                      $26,700

    Noninterest expense                                                        $64,154                                         $63,619                                        $239,286                                     $230,886

    Acquisition-related expense
     (included in noninterest expense)                                          $4,556                                          $7,910                                          $9,432                                      $25,488

    Net income                                                                 $18,920                                         $19,973                                         $81,574                                      $60,016

    Per Common Share
    ----------------

    Earnings (basic)                                                             $0.34                                           $0.39                                           $1.53                                        $1.24

    Earnings (diluted)                                                           $0.34                                           $0.38                                           $1.52                                        $1.21

    Book value                                                                  $21.34                                          $20.50                                          $21.34                                       $20.50

    Averages
    --------

    Total assets                                                            $8,152,463                                      $7,192,084                                      $7,468,091                                   $6,558,517

    Interest-earning assets                                                 $7,199,443                                      $6,269,894                                      $6,561,047                                   $5,754,543

    Loans                                                                   $5,168,761                                      $4,504,587                                      $4,782,369                                   $4,140,826

    Securities, including Federal Home
     Loan Bank stock                                                        $1,918,690                                      $1,662,720                                      $1,708,575                                   $1,474,744

    Deposits                                                                $6,759,259                                      $6,003,657                                      $6,187,342                                   $5,420,577

    Interest-bearing deposits                                               $4,174,459                                      $3,839,060                                      $3,901,524                                   $3,596,343

    Interest-bearing liabilities                                            $4,282,273                                      $3,886,126                                      $3,986,017                                   $3,683,145

    Noninterest-bearing deposits                                            $2,584,800                                      $2,164,597                                      $2,285,818                                   $1,824,234

    Shareholders' equity                                                    $1,185,346                                      $1,056,694                                      $1,109,581                                     $979,099

    Financial Ratios
    ----------------

    Return on average assets                                      0.93%                           1.11%                         1.09%                           0.92%

    Return on average common equity                               6.39%                           7.57%                         7.36%                           6.14%

    Average equity to average assets                             14.54%                          14.69%                        14.86%                          14.93%

    Net interest margin (tax equivalent)                          4.50%                           5.03%                         4.76%                           5.16%

    Efficiency ratio (tax equivalent)
     (2)                                                        66.30%                          70.69%                        63.97%                          70.87%

    Operating efficiency ratio (tax
     equivalent) (3)                                             60.82%                          64.43%                        63.33%                          64.85%


                                                                         December 31,
                                                                         ------------

    Period end                                                     2014                         2013 (1)
    ----------                                                     ----                          -------

    Total assets                                                            $8,584,325                                      $7,161,582

    Loans, net of unearned income (1)                                       $5,445,378                                      $4,517,296

    Allowance for loan and lease losses
     (1)                                                                      $69,569                                         $72,454

    Securities, including Federal Home
     Loan Bank stock                                                        $2,131,622                                      $1,696,640

    Deposits                                                                $6,924,722                                      $5,959,475

    Core deposits                                                           $6,619,944                                      $5,696,357

    Shareholders' equity                                                    $1,228,175                                      $1,053,249

    Nonperforming assets
    --------------------

    Nonaccrual loans                                                           $31,352                                         $34,015

    Other real estate owned and other
     personal property owned (1)                                 22,225                           36,037

    Total nonperforming assets (1)                                             $53,577                                         $70,052
                                                                               -------                                         -------

    Nonperforming loans to period-end
     loans (4)                                                    0.58%                           0.75%

    Nonperforming assets to period-end
     assets (4)                                                   0.62%                           1.02%

    Allowance for loan and lease losses
     to period-end loans (4)                                      1.28%                           1.60%

    Net loan charge-offs (1)                                                    $9,612               (5)                        $9,745               (6)


    (1) Adjusted to conform to current period presentation. The adjustment was limited to including historically disclosed "covered" amounts into the respective rows as these amounts are no longer disclosed separately in the consolidated balance sheets
     or consolidated statements of income.

    (2) Noninterest expense divided by the sum of net interest income on a tax equivalent basis and noninterest income on a tax equivalent basis.

    (3) The operating efficiency ratio (tax equivalent) is a non-GAAP financial measure. See section titled "Non-GAAP Financial Measures" on the last pages of this earnings release for the reconciliation of the operating efficiency ratio (tax
     equivalent) to the efficiency ratio (tax equivalent). During the second quarter of 2014, the methodology was changed to now exclude Washington state Business and Occupation ("B&O") taxes. Amounts presented in prior periods have been adjusted to
     conform with the current methodology.

    (4) Nonperforming asset ratios have been adjusted as a result of the adjustments noted in (1) above to no longer calculate ratios exclusive of "covered" amounts.

    (5)  For the twelve months ended December 31, 2014.

    (6)  For the twelve months ended December 31, 2013.


    FINANCIAL STATISTICS

    Columbia Banking
     System, Inc.

    Unaudited                  December 31,

                                                                                December 31,

                                            2014

                                                                                              2013
                                                                                              ----

    Loan Portfolio
     Composition                                (dollars in thousands)
    --------------

    Commercial business                 $2,119,565                     38.9%                             $1,561,782           34.6%

    Real estate:

    One-to-four family
     residential            175,571                         3.2%                   108,317                              2.4%

    Commercial and
     multifamily
     residential          2,363,541                        43.5%                 2,080,075                             46.0%
                          ---------                         ----                  ---------                              ----

    Total real estate     2,539,112                        46.7%                 2,188,392                             48.4%

    Real estate
     construction:

    One-to-four family
     residential            116,866                         2.1%                    54,155                              1.2%

    Commercial and
     multifamily
     residential            134,443                         2.5%                   126,390                              2.8%
                            -------                          ---                    -------                               ---

    Total real estate
     construction           251,309                         4.6%                   180,545                              4.0%

    Consumer                364,182                         6.7%                   357,014                              7.9%

    Purchased credit
     impaired               230,584                         4.2%                   297,845                              6.6%
                            -------                          ---                    -------                               ---

    Subtotal loans        5,504,752                       101.1%                 4,585,578                            101.5%

    Less:  Net unearned
     income                (59,374)                      (1.1)%                  (68,282)                           (1.5)%
                            -------                        -----                    -------                             -----

    Loans, net of
     unearned income      5,445,378                       100.0%                 4,517,296                            100.0%
                                                          =====                                                       =====

    Less:  Allowance for
     loan and lease
     losses                (69,569)                                                            (52,280)

    Total loans, net      5,375,809                                                          4,465,016
                          =========                                                          =========

    Loans held for sale                     $1,116                                                             $735
                                            ======                                                             ====


                             December 31,                                  December 31,

                                            2014                                               2013
                                            ----                                               ----

    Deposit Composition                         (dollars in thousands)
    -------------------

    Core deposits:

    Demand and other non-
     interest bearing                   $2,651,373                     38.3%                             $2,171,703           36.4%

    Interest bearing
     demand               1,304,258                        18.8%                 1,170,006                             19.6%

    Money market          1,760,331                        25.4%                 1,569,261                             26.3%

    Savings                 615,721                         8.9%                   496,444                              8.3%

    Certificates of
     deposit less than
     $100,000               288,261                         4.2%                   288,943                              4.9%
                            -------                          ---                    -------                               ---

    Total core deposits   6,619,944                        95.6%                 5,696,357                             95.5%


    Certificates of
     deposit greater than
     $100,000               202,014                         2.9%                   201,498                              3.5%

    Certificates of
     deposit insured by
     CDARS(R)                18,429                         0.3%                    19,488                              0.3%

    Brokered money market
     accounts                83,402                         1.2%                    41,765                              0.7%
                             ------                                                 ------

    Subtotal              6,923,789                       100.0%                 5,959,108                            100.0%
                                                          =====                                                       =====

    Premium resulting
     from acquisition
     date fair value
     adjustment                 933                                                                  367
                                ---                                                                ---

    Total deposits                      $6,924,722                                                       $5,959,475
                                        ==========                                                       ==========


    QUARTERLY FINANCIAL STATISTICS

    Columbia Banking System, Inc.                                                                        Three Months Ended
                                                                                                         ------------------

    Unaudited                                               December 31,                  September 30,                    June 30,                    March 31,                   December 31,

                                                                    2014                        2014 (1)                      2014 (1)                    2014 (1)                      2013 (1)
                                                                    ----                         -------                       -------                     -------                       -------

                                                                                            (dollars in thousands except per share)

    Earnings
    --------

    Net interest income                                                         $78,764                                        $76,220                                     $75,124                                       $73,940                                     $77,209

    Provision (recapture) for loan and
     lease losses (1)                                                            $1,708                                           $980                                      $2,117                                        $1,922                                    $(3,682)

    Noninterest income                                                          $15,185                                        $15,930                                     $14,627                                       $14,008                                     $10,612

    Noninterest expense                                                         $64,154                                        $59,982                                     $57,764                                       $57,386                                     $63,619

    Acquisition-related expense
     (included in noninterest expense)                                           $4,556                                         $3,238                                        $672                                          $966                                      $7,910

    Net income                                                                  $18,920                                        $21,583                                     $21,227                                       $19,844                                     $19,973

    Per Common Share
    ----------------

    Earnings (basic)                                                              $0.34                                          $0.41                                       $0.40                                         $0.38                                       $0.39

    Earnings (diluted)                                                            $0.34                                          $0.41                                       $0.40                                         $0.37                                       $0.38

    Book value                                                                   $21.34                                         $20.78                                      $20.71                                        $20.39                                      $20.50

    Averages
    --------

    Total assets                                                             $8,152,463                                     $7,337,306                                  $7,229,187                                    $7,143,759                                  $7,192,084

    Interest-earning assets                                                  $7,199,443                                     $6,451,660                                  $6,339,102                                    $6,244,692                                  $6,269,894

    Loans                                                                    $5,168,761                                     $4,770,443                                  $4,646,356                                    $4,537,107                                  $4,504,587

    Securities, including Federal Home
     Loan Bank stock                                                         $1,918,690                                     $1,585,996                                  $1,645,993                                    $1,682,370                                  $1,662,720

    Deposits                                                                 $6,759,259                                     $6,110,809                                  $5,968,881                                    $5,901,838                                  $6,003,657

    Interest-bearing deposits                                                $4,174,459                                     $3,847,730                                  $3,807,710                                    $3,772,370                                  $3,839,060

    Interest-bearing liabilities                                             $4,282,273                                     $3,889,233                                  $3,901,016                                    $3,868,060                                  $3,886,126

    Noninterest-bearing deposits                                             $2,584,800                                     $2,263,079                                  $2,161,171                                    $2,129,468                                  $2,164,597

    Shareholders' equity                                                     $1,185,346                                     $1,099,512                                  $1,084,927                                    $1,067,353                                  $1,056,694

    Financial Ratios
    ----------------

    Return on average assets                                       0.93%                          1.18%                         1.17%                       1.11%                         1.11%

    Return on average common equity                                6.39%                          7.86%                         7.83%                       7.45%                         7.57%

    Average equity to average assets                              14.54%                         14.99%                        15.01%                      14.94%                        14.69%

    Net interest margin (tax equivalent)                           4.50%                          4.85%                         4.86%                       4.85%                         5.03%

    Period end
    ----------

    Total assets                                                             $8,584,325                                     $7,466,081                                  $7,297,458                                    $7,237,053                                  $7,161,582

    Loans, net of unearned income (1)                                        $5,445,378                                     $4,823,022                                  $4,714,575                                    $4,577,363                                  $4,517,296

    Allowance for loan and lease losses
     (1)                                                                       $69,569                                        $67,871                                     $69,295                                       $70,571                                     $72,454

    Securities, including Federal Home
     Loan Bank stock                                                         $2,131,622                                     $1,643,003                                  $1,621,929                                    $1,671,594                                  $1,696,640

    Deposits                                                                 $6,924,722                                     $6,244,401                                  $5,985,069                                    $6,044,416                                  $5,959,475

    Core deposits                                                            $6,619,944                                     $5,990,118                                  $5,735,047                                    $5,768,434                                  $5,696,357

    Shareholders' equity                                                     $1,228,175                                     $1,096,211                                  $1,092,151                                    $1,074,491                                  $1,053,249

    Nonperforming, assets
    ---------------------

    Nonaccrual loans                                                            $31,352                                        $27,998                                     $30,613                                       $36,397                                     $34,015

    Other real estate owned and other
     personal property owned (1)                                  22,225                          21,941                         28,254                       30,662                         36,037
                                                                  ------                          ------                         ------                       ------                         ------

    Total nonperforming assets (1)                                              $53,577                                        $49,939                                     $58,867                                       $67,059                                     $70,052
                                                                                -------                                        -------                                     -------                                       -------                                     -------

    Nonperforming loans to period-end
     loans (2)                                                     0.58%                          0.58%                         0.65%                       0.80%                         0.75%

    Nonperforming assets to period-end
     assets (2)                                                    0.62%                          0.67%                         0.81%                       0.93%                         0.98%

    Allowance for loan and lease losses
     to period-end loans (2)                                       1.28%                          1.41%                         1.47%                       1.54%                         1.60%

    Net loan charge-offs (1)                                                        $10                                         $2,404                                      $3,393                                        $3,805                                      $2,445


    (1) Adjusted to conform to current period presentation. The adjustment was limited to including historically disclosed "covered" amounts into the respective rows as these amounts are no longer disclosed separately in the consolidated balance sheets or consolidated statements of income.

    (2) Nonperforming asset ratios have been adjusted as a result of the adjustments noted in (1) above to no longer calculate ratios exclusive of "covered" amounts.


    CONSOLIDATED STATEMENTS OF INCOME

    Columbia Banking
     System, Inc.                         Three Months Ended

                                                                                       Twelve Months Ended

    Unaudited                                December 31,

                                                                                           December 31,
                                                                                      ------------

                                         2014               2013 (1)                  2014                  2013 (1)
                                         ----                -------                   ----                   -------

                                                 (in thousands except per share)

    Interest Income

    Loans                                        $69,831                           $69,294                            $268,279 $266,284

    Taxable securities                  7,075                  6,400                 28,754                    20,459

    Tax-exempt securities               2,917                  2,548                 10,830                     9,837

    Deposits in banks                      74                     65                    179                       355
                                          ---                    ---                    ---                       ---

    Total interest income              79,897                 78,307                308,042                   296,935

    Interest Expense

    Deposits                              811                    890                  3,005                     3,962

    Federal Home Loan Bank
     advances                              87                     89                    396                     (404)

    Prepayment charge on
     Federal Home Loan Bank
     advances                               -                     -                     -                    1,548

    Other borrowings                      235                    119                    593                       734
                                          ---                    ---                    ---                       ---

    Total interest expense              1,133                  1,098                  3,994                     5,840
                                        -----                  -----                  -----                     -----

    Net Interest Income                78,764                 77,209                304,048                   291,095

    Provision (recapture)
     for loan and lease
     losses (1)                         1,708                (3,682)                 6,727                     (101)
                                        -----                 ------                  -----                      ----

    Net interest income
     after provision
     (recapture) for loan
     and lease losses                  77,056                 80,891                297,321                   291,196

    Noninterest Income

    Service charges and
     other fees                        14,575                 13,840                 55,555                    48,351

    Merchant services fees              1,961                  2,878                  7,975                     8,812

    Investment securities
     gains, net                             -                     -                   552                       462

    Bank owned life
     insurance                            926                    960                  3,823                     3,570

    Change in FDIC loss-
     sharing asset                    (5,304)               (9,571)              (19,989)                  (45,017)

    Other                               3,027                  2,505                 11,834                    10,522
                                        -----                  -----                 ------                    ------

    Total noninterest
     income                            15,185                 10,612                 59,750                    26,700

    Noninterest Expense

    Compensation and
     employee benefits                 35,903                 34,835                130,864                   125,432

    Occupancy                           8,024                 11,494                 32,300                    33,054

    Merchant processing                   948                    891                  4,006                     3,551

    Advertising and
     promotion                          1,218                    895                  3,964                     4,090

    Data processing and
     communications                     3,900                  3,573                 15,369                    14,076

    Legal and professional
     fees                               4,012                  2,363                 11,389                    12,338

    Taxes, licenses and
     fees                               1,165                    996                  4,552                     5,033

    Regulatory premiums                 1,105                  1,300                  4,549                     4,706

    Net cost (benefit) of
     operation of other
     real estate                          162                (1,295)               (1,045)                  (7,401)

    Amortization of
     intangibles                        1,777                  1,657                  6,293                     6,045

    Other (1)                           5,940                  6,910                 27,045                    29,962
                                        -----                  -----                 ------                    ------

    Total noninterest
     expense                           64,154                 63,619                239,286                   230,886
                                       ------                 ------                -------                   -------

    Income before income
     taxes                             28,087                 27,884                117,785                    87,010

    Provision for income
     taxes                              9,167                  7,911                 36,211                    26,994
                                        -----                  -----                 ------                    ------

    Net Income                                   $18,920                           $19,973                             $81,574  $60,016
                                                 =======                           =======                             =======  =======

    Earnings per common
     share

    Basic                                          $0.34                             $0.39                               $1.53    $1.24

    Diluted                                        $0.34                             $0.38                               $1.52    $1.21

    Dividends paid per
     common share                                  $0.30                             $0.11                               $0.94    $0.41

    Weighted average number
     of common shares
     outstanding                       55,137                 50,847                 52,618                    47,993

    Weighted average number
     of diluted common
     shares outstanding                55,272                 52,358                 53,183                    49,051

    (1) Reclassified to conform to the
     current period's presentation. The
     reclassification was limited to
     removing the separate line item for
     FDIC clawback liability expense
     within noninterest expense and
     including the prior period activity
     in the line item for other
     noninterest expense as well as
     removing the separate line item for
     provision for losses on covered
     loans and including the prior period
     activity in the line item for
     provision for loan and lease losses.



    CONSOLIDATED BALANCE SHEETS

    Columbia Banking System, Inc.

    Unaudited                                                                                                                        December 31,        December 31,

                                                                                                                                              2014              2013 (1)
                                                                                                                                              ----               -------

                                                                                                                                          (in thousands)

                                                                     ASSETS

    Cash and due from banks                                                                                                $171,221           $165,030

    Interest-earning deposits with banks                                                                                                  16,949                14,531
                                                                                                                                          ------                ------

    Total cash and cash equivalents                                                                                                      188,170               179,561

    Securities available for sale at fair value (amortized cost of $2,087,069 and $1,680,491, respectively)                            2,098,257             1,664,111

    Federal Home Loan Bank stock at cost                                                                                                  33,365                32,529

    Loans held for sale                                                                                                                    1,116                   735

    Loans, net of unearned income of ($59,374) and ($68,282), respectively (1)                                                         5,445,378             4,517,296

    Less: allowance for loan and lease losses (1)                                                                                         69,569                72,454
                                                                                                                                          ------                ------

    Loans, net                                                                                                                         5,375,809             4,444,842

    FDIC loss-sharing asset                                                                                                               15,174                39,846

    Interest receivable                                                                                                                   27,802                22,206

    Premises and equipment, net                                                                                                          172,090               154,732

    Other real estate owned                                                                                                               22,190                35,927

    Goodwill                                                                                                                             382,537               343,952

    Other intangible assets, net                                                                                                          30,459                25,852

    Other assets                                                                                                                         237,356               217,289

    Total assets                                                                                                         $8,584,325         $7,161,582
                                                                                                                         ==========         ==========

                                                      LIABILITIES AND SHAREHOLDERS' EQUITY

    Deposits:

    Noninterest-bearing                                                                                                  $2,651,373         $2,171,703

    Interest-bearing                                                                                                                   4,273,349             3,787,772
                                                                                                                                       ---------             ---------

    Total deposits                                                                                                                     6,924,722             5,959,475

    Federal Home Loan Bank advances                                                                                                      216,568                36,606

    Securities sold under agreements to repurchase                                                                                       105,080                25,000

    Other borrowings                                                                                                                       8,248                     -

    Other liabilities                                                                                                                    101,532                87,252
                                                                                                                                         -------                ------

    Total liabilities                                                                                                                  7,356,150             6,108,333

    Commitments and contingent liabilities

                                                              December 31,                                  December 31,

                                                                                 2014                                           2013
                                                                                 ----                                           ----

    Preferred stock (no par value)

    Authorized shares                                                           2,000                                          2,000

    Issued and outstanding                                                          9                                              9              2,217                 2,217

    Common stock (no par value)

    Authorized shares                                                          63,033                                         63,033

    Issued and outstanding                                                     57,437                                         51,265            985,839               860,562

    Retained earnings                                                                                                                    234,498               202,514

    Accumulated other comprehensive loss                                                                                                   5,621              (12,044)
                                                                                                                                           -----               -------

    Total shareholders' equity                                                                                                         1,228,175             1,053,249

    Total liabilities and shareholders' equity                                                                           $8,584,325         $7,161,582
                                                                                                                         ==========         ==========

    (1) Reclassified to conform to the
     current period's presentation. The
     reclassification was limited to
     removing the separate line items for
     covered loans and including the
     prior period balances in the line
     items for loans, net of unearned
     income and allowance for loan and
     lease losses.



    AVERAGE BALANCES AND RATES

    Columbia Banking System, Inc.

    Unaudited

                                                   Three Months Ended December 31,                                Three Months Ended December 31,

                                                                                         2014                                                       2013
                                                                                         ----                                                       ----

                                          Average                       Interest                          Average                    Average                      Interest                Average

                                         Balances                    Earned / Paid                          Rate                     Balances                   Earned / Paid              Rate
                                         --------                    -------------                          ----                     --------                   -------------              ----

                                                                                   (dollars in thousands)

    ASSETS

    Loans, net (1)(2)(3)                                $5,168,761                                     $70,463                 5.45%                                   $4,504,587                 $69,542         6.18%

    Taxable securities                    1,491,930                           7,075                       1.90%            1,319,447                         6,400                   1.94%

    Tax exempt securities (3)               426,759                           4,577                       4.29%              343,273                         3,952                   4.61%

    Interest-earning deposits
     with banks                             111,993                              74                       0.26%              102,587                            65                   0.25%
                                            -------                             ---                                          -------                           ---

    Total interest-earning assets         7,199,443                                        $82,189                4.57%                  6,269,894                                $79,959            5.10%

    Other earning assets                    140,135                                                                                     125,788

    Noninterest-earning assets              812,885                                                                                     796,402
                                            -------                                                                                     -------

    Total assets                                        $8,152,463                                                                                                  $7,192,084
                                                        ==========                                                                                                  ==========

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Certificates of deposit                               $497,704                                        $284                 0.23%                                     $520,764                    $426         0.33%

    Savings accounts                        591,137                              18                       0.01%              491,756                            23                   0.02%

    Interest-bearing demand               1,260,231                             138                       0.04%            1,158,016                           129                   0.04%

    Money market accounts                 1,825,387                             371                       0.08%            1,668,524                           312                   0.07%
                                          ---------                             ---                                        ---------                           ---

    Total interest-bearing
     deposits                             4,174,459                             811                       0.08%            3,839,060                           890                   0.09%

    Federal Home Loan Bank
     advances                                24,823                              87                       1.40%               22,066                            89                   1.62%

    Other borrowings                         82,991                             235                       1.13%               25,000                           119                   1.90%
                                             ------                             ---                                           ------                           ---

    Total interest-bearing
     liabilities                          4,282,273                                         $1,133                0.11%                  3,886,126                                 $1,098            0.11%

    Noninterest-bearing deposits          2,584,800                                                                                   2,164,597

    Other noninterest-bearing
     liabilities                            100,044                                                                                        84,667

    Shareholders' equity                  1,185,346                                                                                   1,056,694
                                          ---------                                                                                   ---------

    Total liabilities &
     shareholders' equity                               $8,152,463                                                                                                    $7,192,084
                                                        ==========                                                                                                  ==========

    Net interest income (tax equivalent)                   $81,056                                                                                       $78,861
                                                           =======                                                                                       =======

    Net interest margin (tax equivalent)                                                                                                           4.50%                                                   5.03%
                                                                                                                                                    ====                                                     ====

             (1)    Nonaccrual loans have been
                      included in the tables as loans
                      carrying a zero yield. Amortized
                      net deferred loan fees and net
                      unearned discounts on certain
                      acquired loans were included in
                      the interest income calculations.
                      The amortization of net deferred
                      loan fees was $1.2 million and
                      $1.0 million for the three months
                      ended December 31, 2014 and 2013,
                      respectively. The accretion of
                      net unearned discounts on certain
                      acquired loans was $5.0 million
                      and $6.8 million for the three
                      months ended December 31, 2014
                      and 2013, respectively.

             (2)    Incremental accretion on purchased
                     credit impaired loans is included
                     in loan interest earned. The
                     incremental accretion income on
                     purchased credit impaired loans
                     was $3.8 million and $6.5 million
                     for the three months ended
                     December 31, 2014 and 2013,
                     respectively.

             (3)    Yields on a fully tax equivalent
                      basis. The tax equivalent yield
                      adjustment to interest earned on
                      noncovered loans was $632
                      thousand and $248 thousand for
                      the three months ended December
                      31, 2014 and 2013, respectively.
                      The tax equivalent yield
                      adjustment to interest earned on
                      tax exempt securities was $1.7
                      million and $1.4 million for the
                      three months ended December 31,
                      2014 and 2013, respectively.



    AVERAGE BALANCES AND RATES

    Columbia Banking System, Inc.

    Unaudited

                                                   Twelve Months Ended December 31,                                Twelve Months Ended December 31,

                                                                                         2014                                                        2013
                                                                                         ----                                                        ----

                                          Average                       Interest                           Average                    Average                      Interest                  Average

                                         Balances                    Earned / Paid                          Rate                      Balances                   Earned / Paid                Rate
                                         --------                    -------------                          ----                      --------                   -------------                ----

                                                                                   (dollars in thousands)

    ASSETS

    Loans, net (1)(2)(4)                                $4,782,369                                     $270,210                 5.65%                                   $4,140,826                   $266,903         6.45%

    Taxable securities (3)                1,332,144                          28,754                        2.16%            1,155,066                        20,459                    1.77%

    Tax exempt securities (4)               376,431                          16,997                        4.52%              319,678                        15,262                    4.77%

    Interest-earning deposits
     with banks                              70,103                             179                        0.26%              138,973                           355                    0.26%
                                             ------                             ---                                           -------                           ---

    Total interest-earning assets         6,561,047                                       $316,140                 4.82%                  5,754,543                                $302,979              5.27%

    Other earning assets                    132,419                                                                                      111,228

    Noninterest-earning assets              774,625                                                                                      692,746
                                            -------                                                                                      -------

    Total assets                                        $7,468,091                                                                                                   $6,558,517
                                                        ==========                                                                                                   ==========

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Certificates of deposit                               $485,487                                       $1,259                 0.26%                                     $535,656                     $1,998         0.37%

    Savings accounts                        543,303                              60                        0.01%              445,666                            94                    0.02%

    Interest-bearing demand               1,204,584                             478                        0.04%            1,048,482                           587                    0.06%

    Money market accounts                 1,668,150                           1,208                        0.07%            1,566,539                         1,283                    0.08%
                                          ---------                           -----                                         ---------                         -----

    Total interest-bearing
     deposits                             3,901,524                           3,005                        0.08%            3,596,343                         3,962                    0.11%

    Federal Home Loan Bank
     advances (5)                            44,876                             396                        0.88%               51,030                         1,144                    2.24%

    Other borrowings                         39,617                             593                        1.50%               35,772                           734                    2.05%
                                             ------                             ---                                            ------                           ---

    Total interest-bearing
     liabilities                          3,986,017                                         $3,994                 0.10%                  3,683,145                                  $5,840              0.16%

    Noninterest-bearing deposits          2,285,818                                                                                    1,824,234

    Other noninterest-bearing
     liabilities                             86,675                                                                                         72,039

    Shareholders' equity                  1,109,581                                                                                      979,099
                                          ---------                                                                                      -------

    Total liabilities &
     shareholders' equity                               $7,468,091                                                                                                     $6,558,517
                                                        ==========                                                                                                   ==========

    Net interest income (tax equivalent)                  $312,146                                                                                       $297,139
                                                          ========                                                                                       ========

    Net interest margin (tax equivalent)                                                                                                            4.76%                                                      5.16%
                                                                                                                                                     ====                                                        ====

             (1)    Nonaccrual loans have been
                      included in the table as loans
                      carrying a zero yield. Amortized
                      net deferred loan fees and net
                      unearned discounts on certain
                      acquired loans were included in
                      the interest income calculations.
                      The amortization of net deferred
                      loan fees was $4.5 million and
                      $3.3 million for the twelve
                      months ended December 31, 2014
                      and 2013, respectively. The
                      accretion of net unearned
                      discounts on certain acquired
                      loans was $21.6 million and $28.4
                      million for the twelve months
                      ended December 31, 2014 and 2013,
                      respectively.

             (2)    Incremental accretion on purchased
                      credit impaired loans is also
                      included in loan interest earned.
                      The incremental accretion income
                      on purchased credit impaired
                      loans was $20.2 million and $29.8
                      million for the twelve months
                      ended December 31, 2014 and 2013,
                      respectively.

             (3)    During the twelve months ended
                      December 31, 2014, the Company
                      recorded a $2.6 million reversal
                      of premium amortization, which
                      increased interest income on
                      taxable securities.

             (4)    Yields on a fully tax equivalent
                      basis. The tax equivalent yield
                      adjustment to interest earned on
                      noncovered loans was $1.9 million
                      and $619 thousand for the twelve
                      months ended December 31, 2014
                      and 2013, respectively. The tax
                      equivalent yield adjustment to
                      interest earned on tax exempt
                      securities was $6.2 million and
                      $5.4 million for the twelve
                      months ended December 31, 2014
                      and 2013, respectively.

             (5)    Federal Home Loan Bank advances
                      includes a prepayment charge of
                      $1.5 million during the twelve
                      months ended December 31, 2013.
                      As a result of the prepayment,
                      the Company recorded $874
                      thousand in premium amortization,
                      which partially offset the impact
                      of the prepayment charge.

Non-GAAP Financial Measures

The Company considers its operating net interest margin and operating efficiency ratios to be important measurements as they more closely reflect the ongoing operating performance of the Company. Despite the importance of the operating net interest margin and operating efficiency ratio to the Company, there are no standardized definitions for them and, as a result, the Company's calculations may not be comparable with other organizations. Also, there may be limits in the usefulness of these measure to investors. As a result, the Company encourages readers to consider its consolidated financial statements in their entirety and not to rely on any single financial measure.

The following tables reconcile the Company's calculation of the operating net interest margin and operating efficiency ratio:



                            Three Months Ended December 31,

                                                                           Twelve Months Ended December 31,


                               2014                          2013               2014                          2013
                               ----                          ----               ----                          ----

    Operating net interest
     margin non-GAAP
     reconciliation:                              (dollars in thousands)

    Net interest income
     (tax equivalent) (1)                  $81,056                          $78,861                                  $312,146   $297,139
                                           -------                          -------                                  --------   --------

    Adjustments to arrive
     at operating net
     interest income (tax
     equivalent):

    Incremental accretion
     income on FDIC
     purchased credit
     impaired loans         (3,796)                      (6,540)          (20,224)                     (29,815)

    Incremental accretion
     income on other FDIC
     acquired loans            (10)                        (237)             (484)                      (2,211)

    Incremental accretion
     income on other
     acquired loans         (4,957)                      (6,540)          (21,093)                     (26,200)

    Premium amortization on
     acquired securities      2,490                         1,828              7,123                         7,309

    Correction of
     immaterial error -
     securities premium
     amortization                 -                            -           (2,622)                            -

    Interest reversals on
     nonaccrual loans           189                           161              1,291                           882

    Prepayment charges on
     FHLB advances                -                            -                 -                        1,548

    Operating net interest
     income (tax
     equivalent) (1)                       $74,972                          $67,533                                  $276,137   $248,652
                                           =======                          =======                                  ========   ========

    Average interest
     earning assets                     $7,199,443                       $6,269,894                                $6,561,047 $5,754,543

    Net interest margin
     (tax equivalent) (1)     4.50%                        5.03%             4.76%                        5.16%

    Operating net interest
     margin (tax
     equivalent) (1)          4.17%                        4.31%             4.21%                        4.32%


                            Three Months Ended December 31,

                                                                         Twelve Months Ended December 31,


                                 2014                      2013              2014                          2013
                                 ----                      ----              ----                          ----

    Operating efficiency
     ratio non-GAAP
     reconciliation:                             (dollars in thousands)

    Noninterest expense
     (numerator A)                        $64,154                        $63,619                                $239,286 $230,886

    Adjustments to arrive
     at operating
     noninterest expense:

    Acquisition-related
     expenses                 (4,556)                  (7,910)          (9,432)                     (25,488)

    Net benefit of
     operation of OREO and
     OPPO                       (160)                    1,308             1,182                         7,539

    FDIC clawback liability
     benefit (expense)              8                      (36)            (294)                        (278)

    Loss on asset disposals       (6)                    (107)            (563)                        (141)

    State of Washington
     Business and
     Occupation ("B&O")
     taxes                    (1,067)                    (908)          (4,183)                      (4,727)

    Operating noninterest
     expense (numerator B)                $58,373                        $55,966                                $225,996 $207,791


    Net interest income
     (tax equivalent) (1)                 $81,056                        $78,861                                $312,146 $297,139

    Noninterest income         15,185                    10,612            59,750                        26,700

    Bank owned life
     insurance tax
     equivalent adjustment        528                       530             2,177                         1,969
                                  ---                       ---             -----                         -----

    Total revenue (tax
     equivalent)
     (denominator A)                      $96,769                        $90,003                                $374,073 $325,808


    Operating net interest
     income (tax
     equivalent) (1)                      $74,972                        $67,533                                $276,137 $248,652

    Adjustments to arrive
     at operating
     noninterest income
     (tax equivalent):

    Investment securities
     gains, net                     -                        -            (552)                        (462)

    Gain on asset disposals       (8)                    (354)             (86)                        (421)

    Other nonrecurring gain         -                  (1,025)                -                      (1,025)

    Gain related to branch
     sale deposit premium           -                        -            (565)                            -

    Change in FDIC loss-
     sharing asset              5,304                     9,571            19,989                        45,017

    Operating noninterest
     income (tax
     equivalent)               21,009                    19,334            80,713                        71,778
                               ------                    ------            ------                        ------

    Total operating revenue
     (tax equivalent)
     (denominator B)                      $95,981                        $86,867                                $356,850 $320,430

    Efficiency ratio (tax
     equivalent) (numerator
     A/denominator A)          66.30%                   70.69%           63.97%                       70.87%

    Operating efficiency
     ratio (tax equivalent)
     (numerator B/
     denominator B)            60.82%                   64.43%           63.33%                       64.85%

    (1) Tax-exempt interest income has been
     adjusted to a tax equivalent basis. The amount
     of such adjustment was an addition to net
     interest income of $2.3 million and $1.7
     million for the three months ended December 31,
     2014 and 2013, respectively, and $8.1 million
     and $6.0 million for the twelve months ended
     December 31, 2014 and 2013, respectively.

Non-GAAP Financial Measures - Continued

The Company considers its ratio of allowance for loan and lease losses to period-end loans, excluding acquired loans to be an important measurement because it more closely reflects the ongoing allowance coverage and provides a ratio that is more comparable to other bank holding companies that have not had similar acquisitions. Despite the importance of this ratio to the Company, there are no standardized definitions for it and, as a result, the Company's calculations may not be comparable with other organizations. Also, there may be limits in the usefulness of this measure to investors. As a result, the Company encourages readers to consider its consolidated financial statements in their entirety and not to rely on any single financial measure.

The following table reconciles the Company's calculation of the allowance for loan and lease losses to period-end loans, excluding acquired loans:



                         December 31,              September 30,          December 31,

                                 2014                        2014                   2013
                                 ----                        ----                   ----

                                            (dollars in thousands)

    Allowance for loan
     and lease losses
     (numerator a)                       $69,569                                $67,871            $72,454

    Less: Allowance for
     loan and lease
     losses attributable
     to acquired loans       (23,212)                   (21,876)              (24,362)
                              -------                     -------                -------

    Equals: Allowance
     for loan and lease
     losses, excluding
     acquired loans
     (numerator b)                       $46,357                   45,995                48,092


    Loans, net of
     unearned income
     (denominator a)                  $5,445,378                             $4,823,022         $4,517,296

    Less: acquired
     loans, net           (1,615,496)                (1,187,487)           (1,479,387)
                           ----------                  ----------             ----------

    Equals: Loans,
     excluding acquired
     loans, net of
     unearned income
     (denominator b)                  $3,829,882                             $3,635,535         $3,037,909


    Allowance for loan
     and lease losses to
     period-end loans
     (numerator a/
     denominator a)             1.28%                      1.41%                 1.60%

    Allowance for loan
     and lease losses to
     period-end loans,
     excluding acquired
     loans (numerator b/
     denominator b)             1.21%                      1.27%                 1.58%

Explanatory Note

Our two most significant FDIC loss-sharing agreements expire on March 31, 2015. As a result, a significant portion of receivables previously disclosed as "covered loans" will no longer be covered by FDIC loss-sharing. To prepare for this event, we have changed our consolidated balance sheet presentation, and reclassified our prior period balance sheets, to no longer differentiate between covered and non-covered loans. Further, when presenting certain loan portfolio details, we refer to loans acquired with deteriorated credit quality as "purchased credit impaired" loans. Purchased credit impaired loan balances approximate balances previously presented as "covered loans".



    Contacts:                    Melanie J. Dressel,

                                 President and

                                 Chief Executive Officer

                                 (253) 305-1911


                                 Clint E. Stein,

                                 Executive Vice President

                                  and Chief Financial
                                  Officer

                                 (253) 593-8304

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SOURCE Columbia Banking System, Inc.