TACOMA, Wash., Jan. 26, 2017 /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 and full year 2016 earnings, "We are very pleased with our results for the fourth quarter, which continued to build upon our second and third quarter performance. Record loan production during the year, good credit quality metrics, and a continued focus on improved operating leverage helped us achieve record fourth quarter net income." Ms. Dressel continued, "I was also inspired by the shared commitment of our team, customers and business partners for helping to care for those who are truly in need. It's a privilege to give back to each of the communities we serve through our annual Warm Hearts Winter Drive."

Balance Sheet

Total assets at December 31, 2016 were $9.51 billion, a decrease of $77.1 million from September 30, 2016. Loans declined $46.3 million during the quarter as payments and a seasonal decline in line utilization offset strong loan originations of $294.1 million. Loan production was diversified across the portfolio sectors, with growth primarily centered in commercial business loans. Securities available for sale were $2.28 billion at December 31, 2016, a decrease of $81.5 million, or 3% from $2.36 billion at September 30, 2016. Total deposits at December 31, 2016 were $8.06 billion, relatively unchanged from September 30, 2016. Core deposits comprised 96% of total deposits and were $7.75 billion at December 31, 2016, a decrease of $59.5 million from September 30, 2016. The average cost of total deposits for the quarter was 0.04%, unchanged from the third quarter of 2016.

Income Statement

Net Interest Income

Net interest income for the fourth quarter of 2016 was $85.7 million, an increase of $165 thousand and $3.9 million from the linked and prior year periods, respectively. The linked quarter increase was principally from taxable securities income, whose yields benefited from a market-driven reduction in premium amortization. The increase from the prior year period was due to higher loan and securities volumes as well as the previously noted reduction in securities premium amortization. Incremental accretion income from purchased loans in the current period was $1.7 million lower than the prior year period. For additional information regarding net interest income, see the "Average Balances and Rates" table.

Noninterest Income

Noninterest income was $22.3 million for the fourth quarter of 2016, a decrease of $836 thousand compared to $23.2 million for the third quarter of 2016. The linked quarter decrease was due to lower card and merchant processing revenue as well as investment securities gains, partially offset by higher other noninterest income. Noninterest income was favorably impacted by a $391 thousand adjustment to our estimated mortgage repurchase liability which was recognized with our acquisition of West Coast Bank. Compared to the fourth quarter of 2015, noninterest income decreased by $2.4 million due to the $3.1 million adjustment recorded in the prior year period related to the previously noted mortgage repurchase liability. This decrease was partially offset by lower expenses from the FDIC loss-sharing asset. Additional details of the components of the change in the FDIC loss-sharing asset are provided in tabular format below.

The change in the FDIC loss-sharing asset has been a significant component of noninterest income but, as our larger loss-sharing agreements have expired, the significance continues to diminish. The following table reflects the income statement components of the change in the FDIC loss-sharing asset:



                                               Three Months Ended                                Twelve Months Ended

                               December 31,          September 30,        December 31,           December 31,        December 31,

                                       2016                    2016                 2015                    2016                 2015
                                       ----                    ----                 ----                    ----                 ----

                                                                     (in thousands)

    Adjustments reflected in
     income

    Amortization, net                       $(299)                                       $(315)                                     $(1,098)   (2,829)               (6,184)

    Loan impairment
     (recapture)                       (92)                         266                                    855                             301      2,268

    Sales of other real estate
     owned                               77                         (49)                                 (484)                            148    (1,237)

    Valuation adjustments on
     other real estate owned              -                           -                                    10                            (22)     1,158

    Other                              (74)                         (6)                                 (314)                          (183)      (15)
                                        ---                          ---                                   ----

    Change in FDIC loss-
     sharing asset                          $(388)                                       $(104)                                     $(1,031)             $(2,585)            $(4,010)
                                             =====                                         =====                                       =======               =======              =======

Noninterest Expense

Total noninterest expense for the fourth quarter of 2016 was $65.0 million, a decrease of $2.3 million from $67.3 million for the third quarter of 2016. The decrease was due to lower advertising and occupancy costs in the current quarter. During the prior quarter we incurred increased advertising costs from production and broadcast of refreshed television commercials as well as occupancy costs associated with the consolidation of a branch location.

Compared to the fourth quarter of 2015, noninterest expense decreased $1.9 million, or 3%, from $66.9 million. After removing the effect of $291 thousand in acquisition-related expenses from the current quarter and $1.9 million from the prior year period, noninterest expense was relatively unchanged from the fourth quarter of 2015. Compensation expense was higher in the current quarter due to recognizing additional incentive expense relative to the record loan production, deposit growth and financial performance. However, the increased compensation costs were substantially offset by decreases in several noninterest expense line items, the largest being occupancy.

Net Interest Margin ("NIM")

Columbia's net interest margin (tax equivalent) for the fourth quarter of 2016 was 4.11%, a decrease of 2 basis points from the linked quarter and a decline of 14 basis points from the prior year period. The decrease from the linked quarter was due to higher volume of interest-earning deposits with banks as well as lower incremental accretion income from acquired loans. The decrease from the prior year period was due to both lower incremental accretion income from acquired loans and lower yielding originated loans. Incremental accretion income was $4.3 million in the current period compared to $6.0 million in the prior year quarter.

Columbia's operating net interest margin (tax equivalent)((1) )was 3.99% for the fourth quarter of 2016, a decline of 4 and 10 basis points from the linked and prior year periods, respectively. Higher volumes of deposits with banks contributed to the decrease from both the linked and prior year periods. Lower yielding originated loans also contributed to the decrease from the prior year period.

Clint Stein, Columbia's Executive Vice President and Chief Financial Officer, commented, "We held higher than normal balances of overnight funds throughout the quarter to maintain balance sheet flexibility through year end." Mr. Stein continued, "The impact of the additional overnight funds was a reduction in our net interest margin of three basis points."

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



                                                          Three Months Ended                                                              Twelve Months Ended

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

                              2016                  2016                 2016                     2016             2015                      2016                      2015
                              ----                  ----                 ----                     ----             ----                      ----                      ----

                                                                            (dollars in thousands)

    Incremental
     accretion income
     due to:

    FDIC purchased
     credit impaired
     loans                         $1,199                                       $1,816                                   $1,300                                             $1,657             $2,200               $5,972  $9,096

    Other FDIC
     acquired loans
     (2)                        -                            -                                   -                         -                                      68                    -                234

    Other acquired
     loans                   3,087                         2,749                                3,074                      3,073                                    3,746               11,983              17,862
                             -----                         -----                                -----                      -----                                    -----               ------              ------

    Incremental
     accretion income              $4,286                                       $4,565                                   $4,374                                             $4,730             $6,014              $17,955 $27,192
                                   ======                                       ======                                   ======                                             ======             ======              ======= =======


    Net interest
     margin (tax
     equivalent)             4.11%                        4.13%                               4.10%                     4.13%                                   4.25%               4.12%              4.35%

    Operating net
     interest margin
     (tax equivalent)
     (1)                    3.99%                        4.03%                               4.00%                     4.03%                                   4.09%               4.01%              4.15%

    __________

    (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.

    (2) For 2016, incremental
     accretion income on other FDIC
     acquired loans is no longer
     considered significant.

Asset Quality

At December 31, 2016, nonperforming assets to total assets were 0.35% compared to 0.32% at September 30, 2016 and 0.39% at December 31, 2015. Total nonperforming assets increased $3.4 million from the linked quarter due to a $6.4 million increase in nonaccrual loans, partially offset by a decrease in other real estate owned.

The following table sets forth information regarding nonaccrual loans and total nonperforming assets:



                                December 31, 2016            September 30, 2016  December 31, 2015
                                -----------------            ------------------  -----------------

                                                          (in thousands)

    Nonaccrual loans:

    Commercial business                           $11,555                                   $9,502         $9,437

    Real estate:

    One-to-four family
     residential                              568                            579                      820

    Commercial and multifamily
     residential                           11,187                          7,052                    9,513
                                           ------                          -----                    -----

    Total real estate                      11,755                          7,631                   10,333

    Real estate construction:

    One-to-four family
     residential                              563                            461                      928
                                              ---                            ---                      ---

    Total real estate
     construction                             563                            461                      928

    Consumer                                3,883                          3,772                      766
                                            -----                          -----                      ---

    Total nonaccrual loans                 27,756                         21,366                   21,464

    Other real estate owned and
     other personal property
     owned                                  5,998                          8,994                   13,738

    Total nonperforming assets                    $33,754                                  $30,360        $35,202
                                                  =======                                  =======        =======

The following table provides an analysis of the Company's allowance for loan and lease losses:



                                                   Three Months Ended                                              Twelve Months Ended

                              December 31,           September 30,              December 31,           December 31,               December 31,
                                      2016                     2016                       2015                    2016                        2015
                                      ----                     ----                       ----                    ----                        ----

                                                                           (in thousands)

    Beginning balance                      $70,264                                             $69,304                                              $69,049               $68,172 $69,569

    Charge-offs:

    Commercial business            (1,195)                            (2,159)                               (2,184)                              (10,068)      (8,266)

    One-to-four family
     residential real estate             -                                  -                                  (79)                                  (35)       (376)

    Commercial and
     multifamily residential
     real estate                      (63)                                  -                                 (264)                                  (89)       (505)

    One-to-four family
     residential real estate
     construction                     (88)                                  -                                     -                                  (88)           -

    Consumer                         (255)                              (383)                                 (545)                               (1,238)     (2,066)

    Purchased credit impaired      (2,118)                            (2,062)                               (3,680)                               (9,944)    (13,854)
                                    ------                              ------                                 ------                                 ------      -------

    Total charge-offs              (3,719)                            (4,604)                               (6,752)                              (21,462)     (25,067)

    Recoveries:

    Commercial business                377                                 854                                    886                                  2,646        2,336

    One-to-four family
     residential real estate            29                                  81                                     19                                    171          307

    Commercial and
     multifamily residential
     real estate                     1,182                                  20                                    277                                  1,401        3,975

    One-to-four family
     residential real estate
     construction                       11                                  21                                     52                                    291          193

    Commercial and
     multifamily residential
     real estate construction            -                                107                                      1                                    109            8

    Consumer                           168                                 399                                    224                                    933          931

    Purchased credit impaired        1,713                               2,216                                  2,067                                  7,004        7,329
                                     -----                               -----                                  -----                                  -----        -----

    Total recoveries                 3,480                               3,698                                  3,526                                 12,555       15,079
                                     -----                               -----                                  -----                                 ------       ------

    Net charge-offs                  (239)                              (906)                               (3,226)                               (8,907)     (9,988)

    Provision for loan and
     lease losses                       18                               1,866                                  2,349                                 10,778        8,591
                                       ---                               -----                                  -----                                 ------        -----

    Ending balance                         $70,043                                             $70,264                                              $68,172               $70,043 $68,172
                                           =======                                             =======                                              =======               ======= =======

The allowance for loan losses to period end loans was 1.13% at December 31, 2016 compared to 1.12% at September 30, 2016 and 1.17% at December 31, 2015. For the fourth quarter of 2016, Columbia recorded a net provision for loan and lease losses of $18 thousand compared to a net provision of $1.9 million for the linked quarter and $2.3 million for the comparable quarter last year. The net provision for loan and lease losses recorded during the current quarter consisted of $600 thousand of provision for loan losses for loans, excluding PCI loans, substantially offset by a provision recovery of $582 thousand for PCI loans.

Andy McDonald, Columbia's Executive Vice President and Chief Credit Officer, commented, "Our credit quality metrics continue to compare favorably to our peers. Our nonperforming assets to total assets of thirty five basis points remains below the fifty basis points we have long considered as a sustainable level for this point in the current economic cycle."

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 Accounting


                                    Three Months Ended                                     Twelve Months Ended

                   December 31,          September 30,               December 31,          December 31,        December 31,
                           2016                    2016                        2015                   2016                 2015
                           ----                    ----                        ----                   ----                 ----

                                                                (in thousands)

    Incremental
     accretion
     income on
     FDIC
     purchased
     credit
     impaired
     loans                      $1,199                                              $1,816                                       $2,200            $5,972 $9,096

    Incremental
     accretion
     income on
     other FDIC
     acquired
     loans (1)                -                                  -                                   68                              -      234

    Recapture
     (provision)
     for losses on
     FDIC
     purchased
     credit
     impaired
     loans                  582                                 433                               (1,349)                           271   (3,915)

    Change in FDIC
     loss-sharing
     asset                (388)                              (104)                              (1,031)                       (2,585)   (4,010)

    FDIC clawback
     liability
     recovery
     (expense)               28                                (29)                                (812)                         (280)    (979)

    Pre-tax
     earnings
     impact                     $1,421                                              $2,116                                       $(924)           $3,378   $426
                                ======                                              ======                                        =====            ======   ====

    _________

    (1) For 2016, incremental
     accretion income on other
     FDIC acquired loans is no
     longer considered
     significant.

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. At December 31, 2016, the accretable yield on purchased credit impaired loans was $45.2 million. Accretable yield is subject to change based upon expected future loan cash flows, which are remeasured by Columbia on a quarterly basis.

The $388 thousand change in the FDIC loss-sharing asset in the current quarter reduced noninterest income and consisted primarily of $299 thousand in amortization expense. Additional details of the components of the change in the FDIC loss-sharing asset are provided in tabular format in the section titled "Noninterest Income" in the prior page

Organizational Update

Ms. Dressel commented, "Earlier this month we announced the signing of a definitive agreement to purchase Pacific Continental Corporation. We are looking forward to this well respected Northwest franchise joining the Columbia team." Ms. Dressel continued, "Aside from both of our companies being commercially oriented community banks, we share a common passion for serving our customers and broader communities while creating an exceptional working environment for our employees."

Conference Call Information

Columbia's management will discuss the fourth quarter and full-year 2016 results on a conference call scheduled for Thursday, January 26, 2017 at 1:00 p.m. Pacific Standard Time (4:00 p.m. Eastern Standard Time). Interested parties may listen to this discussion by calling 1-866-378-3802; Conference ID code #22782095.

A conference call replay will be available from approximately 4:00 p.m. PST on January 26, 2017 through midnight PST on February 2, 2017. The conference call replay can be accessed by dialing 1-855-859-2056 and entering Conference ID code #22782095.

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 locations throughout Washington, Oregon and Idaho. For the tenth consecutive year, the bank was named in 2016 as one of Puget Sound Business Journal's "Washington's Best Workplaces." Columbia ranked in the top 20 on the 2016 Forbes list of best banks in the country for the fifth 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. These forward looking statements include, but are not limited to, descriptions of 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" or the negative of these words or 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 risks and uncertainties, many of which are outside our control, 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, (as applicable), 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 could significantly reduce net interest income 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; (6) legislation or regulatory requirements or changes may adversely affect the businesses in which Columbia is engaged; and (7) the proposed merger with Pacific Continental Corporation ("Pacific Continental") may not close when expected or at all because required regulatory, shareholder or other approvals and other conditions to closing are not received or satisfied on a timely basis or at all, which may have an effect on the trading prices of Columbia's stock. 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 which speak only as of the date hereof. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by the federal securities laws. 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.

Additional Information

In connection with the Agreement and Plan of Merger, dated as of January 9, 2017, by and between Columbia Banking System, Inc. and Pacific Continental, Columbia will file with the SEC a Registration Statement on Form S-4 that will include a Joint Proxy Statement of Columbia and Pacific Continental and a Prospectus of Columbia, as well as other relevant documents concerning the proposed transaction. Shareholders of Columbia and Pacific Continental are urged to carefully read the Registration Statement and the Joint Proxy Statement/Prospectus regarding the transaction in their entirety when they become available and any other relevant documents filed with the SEC, as well as any amendments or supplements to those documents, because they will contain important information. Shareholders of Columbia and Pacific Continental are also urged to carefully review and consider each of Columbia's and Pacific Continental's public filings with the SEC, including but not limited to their Annual Reports on Form 10-K, their proxy statements, their Current Reports on Form 8-K and their Quarterly Reports on Form 10-Q. A definitive Joint Proxy Statement/Prospectus will be sent to the shareholders of each institution seeking any required shareholder approvals. The Joint Proxy Statement/Prospectus and other relevant materials (when they become available) filed with the SEC may be obtained free of charge at the SEC's Website at http://www.sec.gov. PACIFIC CONTINENTAL AND COLUMBIA SHAREHOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS AND THE OTHER RELEVANT MATERIALS BEFORE VOTING ON THE TRANSACTION.

Investors will also be able to obtain these documents, free of charge, from Pacific Continental by accessing Pacific Continental's website at www.therightbank.com under the link "Investor Relations" or from Columbia at www.columbiabank.com under the tab "About" and then under the heading "Investor Relations." Copies can also be obtained, free of charge, by directing a written request to Columbia, Attention: Corporate Secretary, 1301 A Street, Suite 800, Tacoma, Washington 98401-2156 or to Pacific Continental, Attention: Corporate Secretary, 111 West Seventh Avenue, P.O. Box 10727, Eugene Oregon 97440-2727.

Participants in Solicitation

Columbia and Pacific Continental and their directors and executive officers and certain other persons may be deemed to be participants in the solicitation of proxies from the shareholders of Pacific Continental or Columbia in connection with the transaction. Information about the directors and executive officers of Columbia and their ownership of Columbia common stock is set forth in the proxy statement for Columbia's 2016 annual meeting of shareholders, as filed with the SEC on a Schedule 14A on March 16, 2016. Information about the directors and executive officers of Pacific Continental and their ownership of Pacific Continental common stock is set forth in the proxy statement for Pacific Continental's 2016 annual meeting of shareholders, as filed with the SEC on a Schedule 14A on March 15, 2016. Additional information regarding the interests of those participants and other persons who may be deemed participants in the solicitation may be obtained by reading the Joint Proxy Statement/Prospectus regarding the transaction when it becomes available. Free copies of this document may be obtained as described in the preceding paragraph.



    Contacts:                      Melanie J. Dressel,

                                   President and

                                   Chief Executive Officer


                                   Clint E. Stein,

                                   Executive Vice President

                                    and Chief Financial
                                    Officer


                                   Investor Relations

                                   (253) 305-1965



    FINANCIAL STATISTICS

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

    Unaudited                    December 31,            September 30,                  December 31,                December 31,                  December 31,

                                         2016                      2016                           2015                         2016                           2015
                                         ----                      ----                           ----                         ----                           ----

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

    Net interest income                          $85,737                                                    $85,572                                                   $81,819              $333,619   $324,887

    Provision for loan and
     lease losses                                    $18                                                     $1,866                                                    $2,349               $10,778     $8,591

    Noninterest income                           $22,330                                                    $23,166                                                   $24,745               $88,082    $91,473

    Noninterest expense                          $65,014                                                    $67,264                                                   $66,877              $261,142   $266,149

    Acquisition-related
     expense (included in
     noninterest expense)                           $291                                            $             -                                                   $1,872                $2,727    $10,917

    Net income                                   $30,718                                                    $27,484                                                   $26,740              $104,866    $98,827

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

    Earnings (basic)                               $0.53                                                      $0.47                                                     $0.46                 $1.81      $1.71

    Earnings (diluted)                             $0.53                                                      $0.47                                                     $0.46                 $1.81      $1.71

    Book value                                    $21.52                                                     $21.96                                                    $21.48                $21.52     $21.48

    Averages
    --------

    Total assets                              $9,568,214                                                 $9,493,451                                                $8,905,743            $9,311,621 $8,655,243

    Interest-earning assets                   $8,612,498                                                 $8,544,876                                                $7,937,308            $8,363,309 $7,685,734

    Loans                                     $6,200,506                                                 $6,179,163                                                $5,762,048            $6,052,389 $5,609,261

    Securities, including
     Federal Home Loan Bank
     stock                                    $2,314,521                                                 $2,351,093                                                $2,136,703            $2,269,121 $2,031,859

    Deposits                                  $8,105,522                                                 $7,918,532                                                $7,440,628            $7,774,309 $7,146,828

    Interest-bearing deposits                 $4,151,695                                                 $4,118,787                                                $3,933,001            $4,070,401 $3,937,881

    Interest-bearing
     liabilities                              $4,222,820                                                 $4,295,485                                                $4,031,214            $4,227,096 $4,097,483

    Noninterest-bearing
     deposits                                 $3,953,827                                                 $3,799,745                                                $3,507,627            $3,703,908 $3,208,947

    Shareholders' equity                      $1,274,388                                                 $1,278,588                                                $1,259,117            $1,269,801 $1,246,952

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

    Return on average assets            1.29%                                   1.16%                                      1.20%                                      1.13%        1.14%

    Return on average common
     equity                             9.68%                                   8.60%                                      8.50%                                      8.27%        7.93%

    Average equity to average
     assets                            13.32%                                  13.47%                                     14.14%                                     13.64%       14.41%

    Net interest margin (tax
     equivalent)                        4.11%                                   4.13%                                      4.25%                                      4.12%        4.35%

    Efficiency ratio (tax
     equivalent) (1)                   58.35%                                  60.02%                                     60.99%                                     60.04%       62.12%

    Operating efficiency ratio
     (tax equivalent) (2)              58.10%                                  60.47%                                     60.53%                                     59.21%       60.78%


                                 December 31,            September 30,                  December 31,

    Period end                           2016                      2016                           2015
    ----------                           ----                      ----                           ----

    Total assets                              $9,509,607                                                 $9,586,754                                    8,951,697

    Loans, net of unearned
     income                                   $6,213,423                                                 $6,259,757                                    5,815,027

    Allowance for loan and
     lease losses                                $70,043                                                    $70,264                                       68,172

    Securities, including
     Federal Home Loan Bank
     stock                                    $2,288,817                                                 $2,372,724                                    2,170,416

    Deposits                                  $8,059,415                                                 $8,057,816                                    7,438,829

    Core deposits                             $7,749,568                                                 $7,809,064                                    7,238,713

    Shareholders' equity                      $1,251,012                                                 $1,276,735                                    1,242,128

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

    Nonaccrual loans                             $27,756                                                    $21,366                                       21,464

    Other real estate owned
     ("OREO") and other
     personal property owned
     ("OPPO")                           5,998                                    8,994                                      13,738

      Total nonperforming assets                 $33,754                                                    $30,360                                                   $35,202
                                                 =======                                                    =======                                                   =======

    Nonperforming loans to
     period-end loans                   0.45%                                   0.34%                                      0.37%

    Nonperforming assets to
     period-end assets                  0.35%                                   0.32%                                      0.39%

    Allowance for loan and
     lease losses to period-
     end loans                          1.13%                                   1.12%                                      1.17%

    Net loan charge-offs                            $239                           (3)                         $906                           (4)                      $3,226 (5)


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

    (2) The operating efficiency
     ratio (tax equivalent) is a
     non-GAAP financial measure.
     See section titled "Non-GAAP
     Financial Measures" on the last
     page of this earnings release
     for the reconciliation of the
     operating efficiency ratio (tax
     equivalent) to the efficiency
     ratio (tax equivalent).

    (3) For the three months ended
     December 31, 2016.

    (4) For the three months ended
     September 30, 2016.

    (5) For the three months ended
     December 31, 2015.



    QUARTERLY FINANCIAL
     STATISTICS

    Columbia Banking System,
     Inc.                                                                   Three Months Ended

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

                                         2016                      2016                   2016                      2016             2015
                                         ----                      ----                   ----                      ----             ----

                                                                (dollars in thousands except per share)

    Earnings
    --------

    Net interest income                          $85,737                                           $85,572                                   $82,140                $80,170    $81,819

    Provision for loan and
     lease losses                                    $18                                            $1,866                                    $3,640                 $5,254     $2,349

    Noninterest income                           $22,330                                           $23,166                                   $21,940                $20,646    $24,745

    Noninterest expense                          $65,014                                           $67,264                                   $63,790                $65,074    $66,877

    Acquisition-related
     expense (included in
     noninterest expense)                           $291                                    $            -                           $            -                $2,436     $1,872

    Net income                                   $30,718                                           $27,484                                   $25,405                $21,259    $26,740

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

    Earnings (basic)                               $0.53                                             $0.47                                     $0.44                  $0.37      $0.46

    Earnings (diluted)                             $0.53                                             $0.47                                     $0.44                  $0.37      $0.46

    Book value                                    $21.52                                            $21.96                                    $21.93                 $21.70     $21.48

    Averages
    --------

    Total assets                              $9,568,214                                        $9,493,451                                $9,230,791             $8,949,212 $8,905,743

    Interest-earning assets                   $8,612,498                                        $8,544,876                                $8,285,183             $8,005,945 $7,937,308

    Loans                                     $6,200,506                                        $6,179,163                                $5,999,428             $5,827,440 $5,762,048

    Securities, including
     Federal Home Loan Bank
     stock                                    $2,314,521                                        $2,351,093                                $2,262,012             $2,147,457 $2,136,703

    Deposits                                  $8,105,522                                        $7,918,532                                $7,622,266             $7,445,693 $7,440,628

    Interest-bearing deposits                 $4,151,695                                        $4,118,787                                $4,026,384             $3,983,314 $3,933,001

    Interest-bearing
     liabilities                              $4,222,820                                        $4,295,485                                $4,264,792             $4,124,582 $4,031,214

    Noninterest-bearing
     deposits                                 $3,953,827                                        $3,799,745                                $3,595,882             $3,462,379 $3,507,627

    Shareholders' equity                      $1,274,388                                        $1,278,588                                $1,267,670             $1,258,411 $1,259,117

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

    Return on average assets            1.29%                              1.16%                                1.10%                        0.95%     1.20%

    Return on average common
     equity                             9.68%                              8.60%                                8.02%                        6.76%     8.50%

    Average equity to average
     assets                            13.32%                             13.47%                               13.73%                       14.06%    14.14%

    Net interest margin (tax
     equivalent)                        4.11%                              4.13%                                4.10%                        4.13%     4.25%

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

    Total assets                              $9,509,607                                        $9,586,754                                $9,353,651             $9,035,932 $8,951,697

    Loans, net of unearned
     income                                   $6,213,423                                        $6,259,757                                $6,107,143             $5,877,283 $5,815,027

    Allowance for loan and
     lease losses                                $70,043                                           $70,264                                   $69,304                $69,264    $68,172

    Securities, including
     Federal Home Loan Bank
     stock                                    $2,288,817                                        $2,372,724                                $2,297,713             $2,196,407 $2,170,416

    Deposits                                  $8,059,415                                        $8,057,816                                $7,673,213             $7,596,949 $7,438,829

    Core deposits                             $7,749,568                                        $7,809,064                                $7,447,963             $7,384,622 $7,238,713

    Shareholders' equity                      $1,251,012                                        $1,276,735                                $1,274,479             $1,260,788 $1,242,128

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

    Nonaccrual loans                             $27,756                                           $21,366                                   $22,915                $36,891    $21,464

    OREO and OPPO                       5,998                               8,994                                10,613                        12,427     13,738
                                        -----                               -----                                ------                        ------     ------

      Total nonperforming assets                 $33,754                                           $30,360                                   $33,528                $49,318    $35,202
                                                 -------                                           -------                                   -------                -------    -------

    Nonperforming loans to
     period-end loans                   0.45%                              0.34%                                0.38%                        0.63%     0.37%

    Nonperforming assets to
     period-end assets                  0.35%                              0.32%                                0.36%                        0.55%     0.39%

    Allowance for loan and
     lease losses to period-
     end loans                          1.13%                              1.12%                                1.13%                        1.18%     1.17%

    Net loan charge-offs                            $239                                              $906                                    $3,600                 $4,162     $3,226



    LOAN PORTFOLIO COMPOSITION

    Columbia Banking System,
     Inc.

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

                                              2016                       2016                     2016                     2016              2015
                                              ----                       ----                     ----                     ----              ----

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

    Commercial business                            $2,551,054                                          $2,630,017                                 $2,518,682               $2,401,193 $2,362,575

    Real estate:

    One-to-four family
     residential                           170,331                               168,511                               172,957                        175,050      176,295

    Commercial and multifamily
     residential                         2,719,830                             2,686,783                             2,651,476                      2,520,352    2,491,736
                                         ---------                             ---------                             ---------                      ---------    ---------

      Total real estate                  2,890,161                             2,855,294                             2,824,433                      2,695,402    2,668,031

    Real estate construction:

    One-to-four family
     residential                           121,887                               130,163                               129,195                        133,447      135,874

    Commercial and multifamily
     residential                           209,118                               202,014                               185,315                        183,548      167,413
                                           -------                               -------                               -------                        -------      -------

      Total real estate
       construction                        331,005                               332,177                               314,510                        316,995      303,287

    Consumer                               329,261                               325,741                               325,632                        329,902      342,601

    Purchased credit impaired              145,660                               152,764                               161,107                        173,201      180,906
                                           -------                               -------                               -------                        -------      -------

    Subtotal loans                       6,247,141                             6,295,993                             6,144,364                      5,916,693    5,857,400

    Less:  Net unearned income            (33,718)                             (36,236)                             (37,221)                      (39,410)    (42,373)
                                           -------                               -------                               -------                        -------      -------

    Loans, net of unearned
     income                              6,213,423                             6,259,757                             6,107,143                      5,877,283    5,815,027

    Less:  Allowance for loan
     and lease losses                     (70,043)                             (70,264)                             (69,304)                      (69,264)    (68,172)

    Total loans, net                     6,143,380                             6,189,493                             6,037,839                      5,808,019    5,746,855
                                         =========                             =========                             =========                      =========    =========

    Loans held for sale                                $5,846                                              $3,361                                     $7,649                   $3,681     $4,509
                                                       ======                                              ======                                     ======                   ======     ======

                               
    December 31, 
    2016            
    September 30,              
    June 30,               
    March 31,    
    December 31,
    Loan Portfolio Composition
     -Percentages                                                       2016                     2016                     2016              2015
    --------------------------                                          ----                     ----                     ----              ----

    Commercial business                      41.1%                                42.0%                                41.2%                         40.9%       40.6%

    Real estate:

    One-to-four family
     residential                              2.7%                                 2.7%                                 2.8%                          3.0%        3.0%

    Commercial and multifamily
     residential                             43.7%                                43.0%                                43.6%                         42.9%       42.9%
                                              ----                                  ----                                  ----                           ----         ----

      Total real estate                      46.4%                                45.7%                                46.4%                         45.9%       45.9%

    Real estate construction:

    One-to-four family
     residential                              2.0%                                 2.1%                                 2.1%                          2.3%        2.3%

    Commercial and multifamily
     residential                              3.4%                                 3.2%                                 3.0%                          3.1%        2.9%
                                               ---                                   ---                                   ---                            ---          ---

      Total real estate
       construction                           5.4%                                 5.3%                                 5.1%                          5.4%        5.2%

    Consumer                                  5.3%                                 5.2%                                 5.3%                          5.6%        5.9%

    Purchased credit impaired                 2.3%                                 2.4%                                 2.6%                          2.9%        3.1%
                                               ---                                   ---                                   ---                            ---          ---

    Subtotal loans                          100.5%                               100.6%                               100.6%                        100.7%      100.7%

    Less:  Net unearned income              (0.5)%                               (0.6)%                               (0.6)%                        (0.7)%      (0.7)%

    Loans, net of unearned
     income                                 100.0%                               100.0%                               100.0%                        100.0%      100.0%
                                             =====                                 =====                                 =====                          =====        =====



    DEPOSIT COMPOSITION

    Columbia Banking System,
     Inc.

    Unaudited

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

                                      2016                       2016                    2016                     2016             2015
                                      ----                       ----                    ----                     ----             ----

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

    Core deposits:

    Demand and other non-
     interest bearing                      $3,944,495                                         $3,942,434                                $3,652,951                          $3,553,468 $3,507,358

    Interest bearing demand        985,293                               963,242                              957,548                       958,469                 925,909

    Money market                 1,791,283                             1,873,376                            1,818,337                     1,838,364               1,788,552

    Savings                        723,667                               714,047                              692,694                       695,588                 657,016

    Certificates of deposit,
     less than $250,000            304,830                               315,965                              326,433                       338,733                 359,878
                                   -------                               -------                              -------                       -------                 -------

      Total core deposits        7,749,568                             7,809,064                            7,447,963                     7,384,622               7,238,713


    Certificates of deposit,
     $250,000 or more               79,424                                79,590                               72,812                        70,571                  72,126

    Certificates of deposit
     insured by CDARS(R)            22,039                                16,951                               22,755                        24,752                  26,901

    Brokered money market
     accounts                      208,348                               152,151                              129,590                       116,878                 100,854
                                   -------                               -------                              -------                       -------                 -------

    Subtotal                     8,059,379                             8,057,756                            7,673,120                     7,596,823               7,438,594

      Premium resulting from
       acquisition date fair
       value adjustment                 36                                    60                                   93                           126                     235
                                       ---                                   ---                                  ---                           ---                     ---

    Total deposits                         $8,059,415                                         $8,057,816                                $7,673,213                          $7,596,949 $7,438,829
                                           ==========                                         ==========                                ==========                          ========== ==========

                             
    December 31,            
    September 30,              
    June 30,              
    March 31,                                 December 31,
                                                                                                                                                         
    2015
    Deposit Composition -
     Percentages                      2016                       2016                    2016                     2016
    ---------------------             ----                       ----                    ----                     ----

    Core deposits:

    Demand and other non-
     interest bearing                48.9%                                48.9%                               47.6%                        46.8%                  47.2%

    Interest bearing demand          12.2%                                12.0%                               12.5%                        12.6%                  12.4%

    Money market                     22.2%                                23.2%                               23.7%                        24.2%                  24.0%

    Savings                           9.0%                                 8.9%                                9.0%                         9.2%                   8.8%

    Certificates of deposit,
     less than $250,000               3.8%                                 3.9%                                4.3%                         4.5%                   4.8%
                                       ---                                   ---                                  ---                           ---                     ---

      Total core deposits            96.1%                                96.9%                               97.1%                        97.3%                  97.2%


    Certificates of deposit,
     $250,000 or more                 1.0%                                 1.0%                                0.9%                         0.9%                   1.0%

    Certificates of deposit
     insured by CDARS(R)              0.3%                                 0.2%                                0.3%                         0.3%                   0.4%

    Brokered money market
     accounts                         2.6%                                 1.9%                                1.7%                         1.5%                   1.4%

    Total                           100.0%                               100.0%                              100.0%                       100.0%                 100.0%
                                     =====                                 =====                                =====                         =====                   =====



    CONSOLIDATED STATEMENTS OF
     INCOME

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

    Unaudited                     December 31,           September 30,               December 31,             December 31,            December 31,

                                          2016                     2016                    2015 (1)                     2016                 2015 (1)
                                          ----                     ----                     -------                     ----                  -------

                                                                        (in thousands except per share)

    Interest Income

    Loans                                      $74,542                                                $74,956                                           $71,358              $291,465 $286,166

    Taxable securities                   9,333                                8,988                                    8,516                              35,167      30,774

    Tax-exempt securities                2,724                                2,799                                    2,870                              11,121      11,842

    Deposits in banks                      135                                   15                                       25                                 216         109
                                           ---                                  ---                                      ---                                 ---         ---

    Total interest income               86,734                               86,758                                   82,769                             337,969     328,891

    Interest Expense

    Deposits                               782                                  823                                      733                               3,134       2,977

    Federal Home Loan Bank
     advances                               77                                  229                                       83                                 671         474

    Other borrowings                       138                                  134                                      134                                 545         553
                                           ---                                  ---                                      ---                                 ---         ---

    Total interest expense                 997                                1,186                                      950                               4,350       4,004
                                           ---                                -----                                      ---                               -----       -----

    Net Interest Income                 85,737                               85,572                                   81,819                             333,619     324,887

    Provision for loan and lease
     losses                                 18                                1,866                                    2,349                              10,778       8,591
                                           ---                                -----                                    -----                              ------       -----

    Net interest income after
     provision for loan and lease
     losses                             85,719                               83,706                                   79,470                             322,841     316,296

    Noninterest Income

    Deposit account and treasury
     management fees (1)                 7,196                                7,222                                    7,010                              28,500      28,451

    Card revenue (1)                     5,803                                6,114                                    5,776                              23,620      22,690

    Financial services and trust
     revenue (1)                         2,919                                2,746                                    2,939                              11,266      12,596

    Loan revenue (1)                     2,954                                2,949                                    2,807                              10,967      10,932

    Merchant processing revenue          2,006                                2,352                                    2,173                               8,732       8,975

    Bank owned life insurance            1,087                                1,073                                    1,071                               4,546       4,441

    Investment securities gains,
     net                                     7                                  572                                      281                               1,181       1,581

    Change in FDIC loss-sharing
     asset                               (388)                               (104)                                 (1,031)                            (2,585)    (4,010)

    Other (1)                              746                                  242                                    3,719                               1,855       5,817
                                           ---                                  ---                                    -----                               -----       -----

    Total noninterest income            22,330                               23,166                                   24,745                              88,082      91,473

    Noninterest Expense

    Compensation and employee
     benefits                           38,196                               38,476                                   36,689                             150,282     149,410

    Occupancy                            7,690                                8,219                                   10,037                              33,734      34,818

    Merchant processing expense          1,018                                1,161                                    1,058                               4,330       4,204

    Advertising and promotion              720                                1,993                                    1,233                               4,598       4,713

    Data processing                      4,138                                4,275                                    4,399                              16,488      17,421

    Legal and professional fees          2,523                                2,264                                    2,081                               7,889       9,608

    Taxes, licenses and fees             1,106                                1,491                                    1,392                               5,185       5,395

    Regulatory premiums                    792                                  776                                    1,180                               3,777       4,806

    Net cost (benefit) of
     operation of other real
     estate owned                          612                                (249)                                    (60)                                551     (1,629)

    Amortization of intangibles          1,420                                1,460                                    1,652                               5,946       6,882

    Other                                6,799                                7,398                                    7,216                              28,362      30,521
                                         -----                                -----                                    -----                              ------      ------

    Total noninterest expense           65,014                               67,264                                   66,877                             261,142     266,149
                                        ------                               ------                                   ------                             -------     -------

    Income before income taxes          43,035                               39,608                                   37,338                             149,781     141,620

    Provision for income taxes          12,317                               12,124                                   10,598                              44,915      42,793
                                        ------                               ------                                   ------                              ------      ------

    Net Income                                 $30,718                                                $27,484                                           $26,740              $104,866  $98,827
                                               =======                                                =======                                           =======              ========  =======

    Earnings per common share

    Basic                                        $0.53                                                  $0.47                                             $0.46                 $1.81    $1.71

    Diluted                                      $0.53                                                  $0.47                                             $0.46                 $1.81    $1.71

    Dividends paid per common
     share                                       $0.39                                                  $0.39                                             $0.36                 $1.53    $1.34

    Weighted average number of
     common shares outstanding          57,220                               57,215                                   57,057                              57,184      57,019

    Weighted average number of
     diluted common shares
     outstanding                        57,229                               57,225                                   57,070                              57,193      57,032

    __________

    (1) Reclassified to conform to the
     current period's presentation.
     Reclassifications consisted of
     disaggregating fee revenue previously
     presented in 'Service charges and other
     fees' and certain revenue previously
     presented in 'Other' into the
     presentation above. The Company made
     these reclassifications to provide
     additional information about its
     sources of noninterest income. There
     was no change to total noninterest
     income as previously reported as a
     result of these reclassifications.



    CONSOLIDATED BALANCE SHEETS

    Columbia Banking System, Inc.

    Unaudited                                                                                                                                                                   December 31,                  September 30,                                                                                  December 31,

                                                                                                                                                                                                        2016                           2016                     2015
                                                                                                                                                                                                        ----                           ----                     ----

                                                                                                                                                                                                                                               (in thousands)

                                                                                     ASSETS

    Cash and due from banks                                                                                                                               $193,038                                                     $180,839                                       $166,929

    Interest-earning deposits with banks                                                                                                   31,200                                         11,225                                       8,373
                                                                                                                                           ------                                         ------                                       -----

    Total cash and cash equivalents                                                                                                       224,238                                        192,064                                     175,302

    Securities available for sale at fair value (amortized cost of $2,299,037, $2,324,721 and $2,157,610, respectively)                 2,278,577                                      2,360,084                                   2,157,694

    Federal Home Loan Bank stock at cost                                                                                                   10,240                                         12,640                                      12,722

    Loans held for sale                                                                                                                     5,846                                          3,361                                       4,509

    Loans, net of unearned income of ($33,718), ($36,236) and ($42,373), respectively                                                   6,213,423                                      6,259,757                                   5,815,027

    Less: allowance for loan and lease losses                                                                                              70,043                                         70,264                                      68,172
                                                                                                                                           ------                                         ------                                      ------

    Loans, net                                                                                                                          6,143,380                                      6,189,493                                   5,746,855

    FDIC loss-sharing asset                                                                                                                 3,535                                          3,592                                       6,568

    Interest receivable                                                                                                                                     30,074                                     31,606                                    27,877

    Premises and equipment, net                                                                                                                            150,342                                    152,908                                   164,239

    Other real estate owned                                                                                                                                  5,998                                      8,994                                    13,738

    Goodwill                                                                                                                                               382,762                                    382,762                                   382,762

    Other intangible assets, net                                                                                                                            17,631                                     19,051                                    23,577

    Other assets                                                                                                                                           256,984                                    230,199                                   235,854

    Total assets                                                                                                                                                    $9,509,607                                                   $9,586,754                                    $8,951,697
                                                                                                                                                                    ==========                                                   ==========                                    ==========

                                                                      LIABILITIES AND SHAREHOLDERS' EQUITY

    Deposits:

    Noninterest-bearing                                                                                                                                             $3,944,495                                                   $3,942,434                                    $3,507,358

    Interest-bearing                                                                                                                                     4,114,920                                  4,115,382                                 3,931,471
                                                                                                                                                         ---------                                  ---------                                 ---------

    Total deposits                                                                                                                                       8,059,415                                  8,057,816                                 7,438,829

    Federal Home Loan Bank advances                                                                                                         6,493                                         66,502                                      68,531

    Securities sold under agreements to repurchase                                                                                         80,822                                         69,189                                      99,699

    Other liabilities                                                                                                                                      111.865                                    116,512                                   102,510
                                                                                                                                                           -------                                    -------                                   -------

    Total liabilities                                                                                                                                    8,258,595                                  8,310,019                                 7,709,569

    Commitments and contingent liabilities


                                                                                                                          December 31,            September 30,                 December 31,

                                                                                                                                   2016                        2016                          2015
                                                                                                                                   ----                        ----                          ----

    Preferred stock (no par value)                                                                                      (in thousands)

    Authorized shares                                                                                                             2,000                                   2,000                                            2,000

    Issued and outstanding                                                                                                            9                                       9                                                9                                2,217                       2,217                     2,217

    Common stock (no par value)

    Authorized shares                                                                                                           115,000                                 115,000                                          115,000

    Issued and outstanding                                                                                                       58,042                                  58,043                                           57,724                              995,837                     994,098                   990,281

    Retained earnings                                                                                                                                                                                271,957                                   263,915                            255,925

    Accumulated other comprehensive income (loss)                                                                                                                                      (18,999)                                     16,505                            (6,295)
                                                                                                                                                                                        -------                                      ------                             ------

    Total shareholders' equity                                                                                                                                                                     1,251,012                                 1,276,735                          1,242,128

    Total liabilities and shareholders' equity                                                                                                                                                    $9.509,607                                             $9,586,754                               $8,951,697
                                                                                                                                                                                                  ==========                                             ==========                               ==========



    AVERAGE BALANCES AND RATES

    Columbia Banking System, Inc.

    Unaudited

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

                                                         December 31, 2016                                        December 31, 2015

                                          Average                  Interest           Average                  Average                   Interest                Average
                                         Balances               Earned / Paid           Rate                  Balances                Earned / Paid                Rate
                                         --------               -------------           ----                  --------                -------------                ----

                                                                              (dollars in thousands)

    ASSETS

    Loans, net (1)(2)                              $6,200,506                                      $75,838                        4.89%                                  $5,762,048                        $72,322         5.02%

    Taxable securities                   1,853,788                            9,333                            2.01%                          1,686,594                        8,516                 2.02%

    Tax exempt securities (2)              460,733                            4,191                            3.64%                            450,109                        4,417                 3.93%

    Interest-earning deposits
     with banks                             97,471                              135                            0.55%                             38,557                           25                 0.26%
                                            ------                              ---                                                              ------                          ---

    Total interest-earning
     assets                              8,612,498                                      $89,497                          4.16%                          7,937,308                            $85,280               4.30%

    Other earning assets                   162,591                                                                           153,298

    Noninterest-earning assets             793,125                                                                           815,137
                                           -------                                                                           -------

    Total assets                                   $9,568,214                                                                               $8,905,743
                                                   ==========                                                                               ==========

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Certificates of deposit                          $410,372                                         $114                        0.11%                                    $460,858                           $179         0.16%

    Savings accounts                       720,453                               18                            0.01%                            653,738                           17                 0.01%

    Interest-bearing demand                969,104                              154                            0.06%                            920,021                          161                 0.07%

    Money market accounts                2,051,766                              496                            0.10%                          1,898,384                          376                 0.08%
                                         ---------                              ---                                                           ---------                          ---

    Total interest-bearing
     deposits                            4,151,695                              782                            0.08%                          3,933,001                          733                 0.07%

    Federal Home Loan Bank
     advances                               10,128                               77                            3.04%                             18,915                           83                 1.76%

    Other borrowings                        60,997                              138                            0.90%                             79,298                          134                 0.68%
                                            ------                              ---                                                              ------                          ---

    Total interest-bearing
     liabilities                         4,222,820                                         $997                          0.09%                          4,031,214                               $950               0.09%

    Noninterest-bearing
     deposits                            3,953,827                                                                         3,507,627

    Other noninterest-bearing
     liabilities                           117,179                                                                           107,785

    Shareholders' equity                 1,274,388                                                                         1,259,117
                                         ---------                                                                         ---------

    Total liabilities &
     shareholders' equity                          $9,568,214                                                                               $8,905,743
                                                   ==========                                                                               ==========

    Net interest income (tax equivalent)                                                              $88,500                                                                        $84,330
                                                                                                      =======                                                                        =======

    Net interest margin (tax equivalent)                                                                                                                  4.11%                                                     4.25%
                                                                                                                                                           ====                                                       ====


             (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 acquired
                     loans were included in the
                     interest income calculations. The
                     amortization of net deferred loan
                     fees was $1.7 million and $1.1
                     million for the three month
                     periods ended December 31, 2016
                     and December 31, 2015,
                     respectively. The incremental
                     accretion on acquired loans was
                     $4.3 million and $6.0 million for
                     the three months ended December
                     31, 2016 and 2015, respectively.

             (2)    Tax-exempt income is calculated
                     on a tax equivalent basis. The
                     tax equivalent yield adjustment
                     to interest earned on loans was
                     $1.3 million and $964 thousand
                     for the three months ended
                     December 31, 2016 and 2015,
                     respectively. The tax equivalent
                     yield adjustment to interest
                     earned on tax exempt securities
                     was $1.5 million for both three
                     months ended December 31, 2016
                     and 2015.



    AVERAGE BALANCES AND RATES

    Columbia Banking System, Inc.

    Unaudited

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

                                                         December 31, 2016                                        September 30, 2016

                                          Average                  Interest           Average                  Average                   Interest                Average
                                                                Earned / Paid           Rate                  Balances                Earned / Paid
                                         Balances                                                                                                                  Rate
                                         --------                                                                                                                  ----

                                                                              (dollars in thousands)

    ASSETS

    Loans, net (1)(2)                              $6,200,506                                      $75,838                        4.89%                                  $6,179,163                        $76,195         4.93%

    Taxable securities                   1,853,788                            9,333                            2.01%                          1,870,466                        8,988                 1.92%

    Tax exempt securities (2)              460,733                            4,191                            3.64%                            480,627                        4,306                 3.58%

    Interest-earning deposits
     with banks                             97,471                              135                            0.55%                             14,620                           15                 0.41%
                                            ------                              ---                                                              ------                          ---

    Total interest-earning
     assets                              8,612,498                                      $89,497                          4.16%                          8,544,876                            $89,504               4.19%

    Other earning assets                   162,591                                                                           155,663

    Noninterest-earning assets             793,125                                                                           792,912
                                           -------                                                                           -------

    Total assets                                   $9,568,214                                                                               $9,493,451
                                                   ==========                                                                               ==========

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Certificates of deposit                          $410,372                                         $114                        0.11%                                    $417,887                           $124         0.12%

    Savings accounts                       720,453                               18                            0.01%                            705,923                           18                 0.01%

    Interest-bearing demand                969,104                              154                            0.06%                            961,527                          189                 0.08%

    Money market accounts                2,051,766                              496                            0.10%                          2,033,450                          492                 0.10%
                                         ---------                              ---                                                           ---------                          ---

    Total interest-bearing
     deposits                            4,151,695                              782                            0.08%                          4,118,787                          823                 0.08%

    Federal Home Loan Bank
     advances                               10,128                               77                            3.04%                             96,931                          229                 0.95%

    Other borrowings                        60,997                              138                            0.90%                             79,767                          134                 0.67%
                                            ------                              ---                                                              ------                          ---

    Total interest-bearing
     liabilities                         4,222,820                                         $997                          0.09%                          4,295,485                             $1,186               0.11%

    Noninterest-bearing
     deposits                            3,953,827                                                                         3,799,745

    Other noninterest-bearing
     liabilities                           117,179                                                                           119,633

    Shareholders' equity                 1,274,388                                                                         1,278,588
                                         ---------                                                                         ---------

    Total liabilities &
     shareholders' equity                          $9,568,214                                                                               $9,493,451
                                                   ==========                                                                               ==========

    Net interest income (tax equivalent)                                                              $88,500                                                                        $88,318
                                                                                                      =======                                                                        =======

    Net interest margin (tax equivalent)                                                                                                                  4.11%                                                     4.13%
                                                                                                                                                           ====                                                       ====


             (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 acquired loans were
                     included in the interest income
                     calculations. The amortization of
                     net deferred loan fees was $1.7
                     million and $1.4 million for the
                     three month periods ended December
                     31, 2016 and September 30, 2016.
                     The incremental accretion on
                     acquired loans was $4.3 million
                     and $4.6 million for the three
                     months ended December 31, 2016 and
                     September 30, 2016, respectively.

             (2)    Tax-exempt income is calculated on
                     a tax equivalent basis. The tax
                     equivalent yield adjustment to
                     interest earned on loans was $1.3
                     million and $1.2 million for the
                     three months ended December 31,
                     2016 and September 30, 2016,
                     respectively. The tax equivalent
                     yield adjustment to interest
                     earned on tax exempt securities
                     was $1.5 million and $1.5 million
                     for the three month periods ended
                     December 31, 2016 and September
                     30, 2016, respectively.



    AVERAGE BALANCES AND RATES

    Columbia Banking System, Inc.

    Unaudited

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

                                                                                      2016                                                                        2015

                                          Average                    Interest                    Average                Average                       Interest         Average
                                         Balances                 Earned / Paid                    Rate                 Balances                   Earned / Paid        Rate
                                         --------                 -------------                    ----                 --------                   -------------        ----

                                                                                   (dollars in thousands)

    ASSETS

    Loans, net (1)(2)                                $6,052,389                                     $296,283                        4.90%                                  $5,609,261                         $289,450       5.16%

    Taxable securities                   1,804,004                            35,167                             1.95%                       1,577,711                          30,774                  1.95%

    Tax exempt securities (2)              465,117                            17,109                             3.68%                         454,148                          18,219                  4.01%

    Interest-earning deposits
     with banks                             41,799                               216                             0.52%                          44,614                             109                  0.24%
                                            ------                               ---                                                            ------                             ---

    Total interest-earning
     assets                              8,363,309                                      $348,775                           4.17%                             7,685,734                         $338,552                4.40%

    Other earning assets                   156,871                                                                             149,476

    Noninterest-earning assets             791,441                                                                             820,033
                                           -------                                                                             -------

    Total assets                                     $9,311,621                                                                            $8,655,243
                                                     ==========                                                                            ==========

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Certificates of deposit                            $426,296                                         $522                        0.12%                                    $483,193                             $868       0.18%

    Savings accounts                       698,687                                71                             0.01%                         637,464                              70                  0.01%

    Interest-bearing demand                952,135                               695                             0.07%                         982,491                             612                  0.06%

    Money market accounts                1,993,283                             1,846                             0.09%                       1,834,733                           1,427                  0.08%
                                         ---------                             -----                                                         ---------                           -----

    Total interest-bearing
     deposits                            4,070,401                             3,134                             0.08%                       3,937,881                           2,977                  0.08%

    Federal Home Loan Bank
     advances                               79,673                               671                             0.84%                          70,678                             474                  0.67%

    Other borrowings                        77,022                               545                             0.71%                          88,924                             553                  0.62%
                                            ------                               ---                                                            ------                             ---

    Total interest-bearing
     liabilities                         4,227,096                                        $4,350                           0.10%                             4,097,483                           $4,004                0.10%

    Noninterest-bearing
     deposits                            3,703,908                                                                           3,208,947

    Other noninterest-bearing
     liabilities                           110,816                                                                             101,861

    Shareholders' equity                 1,269,801                                                                           1,246,952
                                         ---------                                                                           ---------

    Total liabilities &
     shareholders' equity                            $9,311,621                                                                            $8,655,243
                                                     ==========                                                                            ==========

    Net interest income (tax equivalent)                                                                $344,425                                                                       $334,548
                                                                                                        ========                                                                       ========

    Net interest margin (tax equivalent)     4.12%                                                                       4.35%
                                              ====                                                                         ====


             (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 acquired
                     loans were included in the
                     interest income calculations. The
                     amortization of net deferred loan
                     fees was $5.3 million and $4.9
                     million for the twelve months
                     ended December 31, 2016 and 2015,
                     respectively. The incremental
                     accretion on acquired loans was
                     $18.0 million and $27.2 million
                     for the twelve months ended
                     December 31, 2016 and 2015,
                     respectively.

             (2)    Tax-exempt income is calculated
                     on a tax equivalent basis. The
                     tax equivalent yield adjustment
                     to interest earned on loans was
                     $4.8 million and $3.3 million for
                     the twelve months ended December
                     31, 2016 and 2015, respectively.
                     The tax equivalent yield
                     adjustment to interest earned on
                     tax exempt securities was $6.0
                     million and $6.4 million for the
                     twelve months ended December 31,
                     2016 and 2015, respectively.

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. 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                                                       Twelve Months Ended

                            December 31,             September 30,               December 31,               December 31,            December 31,

                                    2016                       2016                        2015                        2016                     2015
                                    ----                       ----                        ----                        ----                     ----

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

    Net interest income
     (tax equivalent) (1)                   $88,500                                                 $88,318                                             $84,330                 $344,425   $334,548
                                            -------                                                 -------                                             -------                 --------   --------

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

    Incremental accretion
     income on FDIC
     purchased credit
     impaired loans              (1,199)                               (1,816)                                   (2,200)                              (5,972)     (9,096)

    Incremental accretion
     income on other FDIC
     acquired loans (2)                -                                     -                                      (68)                                    -       (234)

    Incremental accretion
     income on other
     acquired loans              (3,087)                               (2,749)                                   (3,746)                             (11,983)    (17,862)

    Premium amortization on
     acquired securities           1,348                                  1,991                                      2,253                                 7,738       10,217

    Interest reversals on
     nonaccrual loans                246                                    266                                        582                                 1,072        1,713

    Operating net interest
     income (tax
     equivalent) (1)                        $85,808                                                 $86,010                                             $81,151                 $335,280   $319,286
                                            =======                                                 =======                                             =======                 ========   ========

    Average interest
     earning assets                      $8,612,498                                              $8,544,876                                          $7,937,308               $8,363,309 $7,685,734

    Net interest margin
     (tax equivalent) (1)          4.11%                                 4.13%                                     4.25%                                4.12%       4.35%

    Operating net interest
     margin (tax
     equivalent) (1)               3.99%                                 4.03%                                     4.09%                                4.01%       4.15%


                                                    Three Months Ended                                                      Twelve Months Ended

                            December 31,             September 30,               December 31,               December 31,            December 31,

                                    2016                       2016                        2015                        2016                     2015
                                    ----                       ----                        ----                        ----                     ----

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

    Noninterest expense
     (numerator A)                          $65,014                                                 $67,264                                             $66,877                 $261,142   $266,149

    Adjustments to arrive
     at operating
     noninterest expense:

    Acquisition-related
     expenses                      (291)                                     -                                   (1,872)                              (2,727)    (10,917)

    Net benefit (cost) of
     operation of OREO and
     OPPO                          (612)                                   254                                        150                                 (544)       1,724

    FDIC clawback liability
     expense                          28                                   (29)                                     (812)                                (280)       (979)

    Loss on asset disposals          (7)                                  (31)                                      (52)                                (205)       (433)

    State of Washington
     Business and
     Occupation ("B&O")
     taxes                         (995)                               (1,382)                                   (1,294)                              (4,752)     (4,962)

    Operating noninterest
     expense (numerator B)                  $63,137                                                 $66,076                                             $62,997                 $252,634   $250,582


    Net interest income
     (tax equivalent) (1)                   $88,500                                                 $88,318                                             $84,330                 $344,425   $334,548

    Noninterest income            22,330                                 23,166                                     24,745                                88,082       91,473

    Bank owned life
     insurance tax
     equivalent adjustment           586                                    577                                        576                                 2,448        2,391
                                     ---                                    ---                                        ---                                 -----        -----

    Total revenue (tax
     equivalent)
     (denominator A)                       $111,416                                                $112,061                                            $109,651                 $434,955   $428,412


    Operating net interest
     income (tax
     equivalent) (1)                        $85,808                                                 $86,010                                             $81,151                 $335,280   $319,286

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

    Investment securities
     gains, net                      (7)                                 (572)                                     (281)                              (1,181)     (1,581)

    Gain on asset disposals         (52)                                  (16)                                       (4)                                (124)       (129)

    Mortgage loan
     repurchase liability
     adjustment                    (391)                                     -                                   (3,147)                                (391)     (3,147)

    Change in FDIC loss-
     sharing asset                   388                                    104                                      1,031                                 2,585        4,010
                                                                           ---

    Operating noninterest
     income (tax
     equivalent)                  22,854                                 23,259                                     22,920                                91,419       93,017
                                  ------                                 ------                                     ------                                ------       ------

    Total operating revenue
     (tax equivalent)
     (denominator B)                       $108,662                                                $109,269                                            $104,071                 $426,699   $412,303

    Efficiency ratio (tax
     equivalent) (numerator
     A/denominator A)             58.35%                                60.02%                                    60.99%                               60.04%      62.12%

    Operating efficiency
     ratio (tax equivalent)
     (numerator B/
     denominator B)               58.10%                                60.47%                                    60.53%                               59.21%      60.78%

    __________

    (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 $2.8 million, $2.7 million
     and $2.5 million for the three months ended
     December 31, 2016, September 30, 2016 and
     December 31, 2015, respectively; and $10.8
     million and $9.7 million for the twelve months
     ended December 31, 2016 and December 31, 2015,
     respectively.

    (2) For 2016, incremental accretion income on
     other FDIC acquired loans is no longer
     considered significant and will no longer be
     tracked for these non-GAAP financial measures.

To view the original version on PR Newswire, visit:http://www.prnewswire.com/news-releases/columbia-banking-system-announces-record-fourth-quarter-and-full-year-2016-results-300397183.html

SOURCE Columbia Banking System, Inc.