CNB CORP /MI/
10-K405, 1998-03-31
NATIONAL COMMERCIAL BANKS
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<PAGE>   1
                   U.S. SECURITIES AND EXCHANGE COMMISSION

                          Washington , D.C.  20549

                                  FORM 10-K

               ANNUAL REPORT UNDER SECTION 13 OR 15(D) OF THE
                       SECURITIES EXCHANGE ACT OF 1934
                 For the fiscal year ended December 31, 1997

                       Commission file number 0-28388

                               CNB CORPORATION
           (Exact name of registrant as specified in its charter)

               MICHIGAN                                     38-2662386
         (State or other jurisdiction of                 (I.R.S. Employer
         incorporation or organization)               Identification No.)
                 303 NORTH MAIN STREET, CHEBOYGAN, MI  49721
         (Address of principal executive offices, including Zip code)

      Registrant's telephone number                        (616) 627-7111

             Securities registered under 12(b) of the  Act: None

                Securities registered under 12(g) of the Act:
                   COMMON STOCK, PAR VALUE $2.50 PER SHARE
                              (Title of Class)

Check whether the issuer (1) filed all reports required to be filed by Section
13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12
months (or for such shorter period that the registrant was required to file
such reports), and (2) has been subject to such filing requirements for the
past 90 days.  Yes   X       No 
                   -----        -----

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained to the
best of the registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of the Form 10-K or any
amendment to this form 10-K.     [    X    ]

Aggregate market value of the voting stock held by non-affiliates of the
registrant as of March 20, 1998 was $ 45,098,000.  For this purpose only, the
affiliates of the registrant have been assumed to be the executive officers,
directors and 10% or more shareholders.

As of March 20, 1998 there were outstanding 1,025,844 shares of the
registrant's common stock, $ 2.50 par value.

The registrant's annual report to security holders for fiscal year ended
December 31, 1997 is incorporated by reference in Part I and Part II of this
report, and the registrant's proxy statement for its annual meeting of
shareholders is incorporated by reference in Part III of this report.
<PAGE>   2
        PART I


ITEM 1 - BUSINESS

CNB Corporation ("the Company") was incorporated in June, 1985 as a business
corporation under the Michigan Business Corporation Act, pursuant to the
authorization and direction of the Board of Directors of The Citizens National
Bank of Cheboygan ("the Bank").

The Company is a bank holding company registered with the Board of Governors of
the Federal Reserve System (the "Federal Reserve Board") under the Bank Holding
Company Act with the Bank as its only wholly-owned subsidiary.  The Bank was
acquired by the Company effective December 31, 1985.  The Company has corporate
power to engage in such activities as permitted to business corporations under
the Michigan Business Corporation Act, subject to the limitations of the Bank
Holding Company Act and regulations of the Federal Reserve Board.  In general,
the Bank Holding Company Act and regulations restrict the Company with respect
to its own activities and activities of any subsidiaries to the business of
banking or such other activities which are closely related to the business of
banking.

The Bank offers a full range of banking services to individuals, partnerships,
corporations, and other entities.  Banking services include checking, NOW
accounts, savings, time deposit accounts, money market deposit accounts, safe
deposit facilities and money transfers.

The Bank's lending function provides a full range of loan products.  These
include real estate mortgages, secured and unsecured commercial and consumer
loans, check credit loans, lines of credit, home equity loans and construction
financing.  The Bank also participates in specialty loan programs through the
Michigan State Housing Development Authority, Small Business Administration,
Federal Home Loan Mortgage Corporation, Consolidated Farm Service Agency, and
Mortgage Guaranty Insurance Corporation.  Through correspondent relationships,
the Bank also makes available credit cards and student loans.  The Bank's loan
portfolio is over 58% residential real estate mortgages on both primary and
secondary homes.  The borrower base is very diverse and loan to value ratios
are generally 80% or less.  The commercial loan portfolio accounts for
approximately 10% of total loans.  Agricultural lending is minimal and secured
by real estate.  Construction lending is predominately residential, with only
an occasional "spec" home or commercial building.  Unsecured lending is very
limited and personal guarantees are required on most commercial loans.

The Bank makes first and second mortgage loans to its customers for the
purchase of residential and commercial properties.  Historically, the Bank has
sold its residential mortgage loans qualifying for the secondary market to the
Federal Home Loan Mortgage Corporation("FHLMC").  The mortgage loan portfolio
serviced by the Bank for the FHLMC totaled over $ 27 million at December 31,
1997.

Banking services are delivered through a system of five full-service banking
offices and three drive- in branches plus six automated teller machines in
Cheboygan, Emmet and Presque Isle Counties, Michigan.  The business base of the
Counties is primarily tourism with light manufacturing.  The Bank maintains
correspondent bank relationships with several larger banks, which involve check
clearing operations, transfer of funds, loan participation, and the purchase
and sale of federal funds and other similar services.

                                   Page 1

<PAGE>   3


Under various agency relationships, the Bank provides trust and discount
brokerage services, and mutual fund, annuity and life insurance products to its
customers.


Investments

Securities and their fair values at December 31 were as follows:

<TABLE>
<CAPTION>
Available for sale                                                          Gross         Gross
                                                  Amortized  Unrealize   Unrealize         Fair
                                                     Cost      Gains       Losses          Value
                                                     ----      -----       ------          -----
                                                                      (In thousands)
<S>                                            <C>            <C>         <C>           <C>
1997

     U.S. government and agency                $  16,085      $    39      $   (8)      $     16,116    
     State and municipal                           2,997           49                          3,046    
                                               ---------      -------      -------      ------------
                                               $  19,082      $    88      $   (8)      $     19,162    
1996                                           =========      =======      =======      ============                          

     U.S. government and agency                $   7,988      $     7      $  (10)      $      7,985     
                                               ---------      -------      -------      ------------
                                               $   7,988      $     7      $  (10)      $      7,985     
                                               =========      =======      =======      ============                          
                                                                         
1995                                                                     
                                                                         
     U.S. government and agency                $  11,448      $    86      $  (11)      $     11,523      
     State and municipal                             295            3                            298   
                                               ---------      -------      -------      ------------
                                               $  11,743      $    89      $  (11)      $     11,821      
                                               =========      =======      =======      ============                          
                                                                                           
Held to Maturity                                                         
                                                                         
1997                                                                     
                                                                         
     U.S. government and agency                $  28,529      $   137       $  26       $     28,640      
     State and municipal                           13,95          135       $  11       $     14,078     
                                               ---------      -------      -------      ------------
                                               $  42,483      $   272       $ (37)      $     42,718      
                                               =========      =======      =======      ============                          
                                                                         
1996                                                                     
                                                                         
     U.S. government and agency                $  42,013      $   271       $ (75)      $     42,209      
     State and municipal                          11,072          142       $  (7)            11,207     
                                               ---------      -------      -------      ------------
                                               $  53,085      $   413       $ (82)      $     53,416      
                                               =========      =======      =======      ============                          
                                                                         
                                                                         
1995                                                                     
                                                                         
     U.S. government and agency                $  34,307      $   270       $ (18)      $     34,559      
     State and municipal                          12,523           74         (12)            12,585     
                                               ---------      -------      -------      ------------
                                               $  46,830      $   344       $ (30)      $     47,144      
                                               =========      =======      =======      ============                          
</TABLE>


                                    Page 2

<PAGE>   4



Scheduled maturities of securities available for sale and held to maturity at
December 31, 1997 were as follows:

<TABLE>
<CAPTION>
                                   Due in       Due from       Due from          Due                
                                   one year     one to         five to         after ten           
                                   or less      five years     ten years         years          Total      
                                                            (In thousands)                                 
<S>                                 <C>         <C>            <C>             <C>            <C>                           
U.S. Government and agencies        $17,477     $  27,010      $      -        $     -        $  44,487      
State and municipal                   6,449         8,272         1,994            493        $  17,158      
                                    -------     ---------      --------        -------        ---------
                                    $23,926     $  35,282      $  1,994        $   493        $  61,645      
                                    =======     =========      ========        =======        =========
                                                                                                             
Yield                                  5.77%         5.94%         4.95%          5.65%            5.84%      
</TABLE>


Loans

The following is a summary of loans at December 31:


                                   1997      1996     1995     1994     1993
                                              (In thousands)

Residential real estate         $  60,754 $ 56,699 $46,689  $42,391  $ 40,848
Consumer                           10,009    9,239   9,395    8,882    10,493
Commercial real estate             20,899   21,331  21,487   23,081    21,602
Commercial                         11,705    9,632  10,765    9,592    12,979
                                --------- -------- -------  -------  --------
                                  103,367   96,901  88,336   83,946    85,922
Deferred loan origination fees,      (128)    (160)   (189)    (240)     (213)
Allowance for loan losses          (1,442)  (1,361) (1,305)  (1,247)   (1,258)
                                --------- -------- -------  -------  --------
                                $ 101,797 $ 95,380 $86,842  $82,459  $ 84,451
                                ========= ======== =======  =======  ========



Maturity and Rate Sensitivity of Selected Loans

The following table presents the remaining maturity of total loans outstanding
(excluding residential real estate mortgage and consumer loans) at December 31,
1997, according to scheduled repayments of principal.  The amounts due after
one year are classified according to the sensitivity of changes in interest
rates.

                                             Total
                                             ------
                                         (In thousands)

In one year or less                       $   9,087
After one year but within five years
     Interest rates are floating or adjus     4,814
     Interest rates are fixed or predeter    13,422
After five years
     Interest rates are floating or adjus     4,948
     Interest rates are fixed or predeter       333
                                          ---------
                                          $  32,604
                                          =========

                                    Page 3

<PAGE>   5




Summary of loan loss experience is as follows:

Additional information relative to the allowance for loan losses is presented
in the following table.  This table summarizes loan balances at the end of each
period and daily average balances, changes in the allowance for loan losses
arising from loans charged off and recoveries on loans previously charged off
by loan category, and additions to the allowance for loan losses through
provisions charged to expense.



                                 1997      1996     1995     1994     1993
                                              (In thousands)

Balance at the beginning of the $  1,361  $ 1,305 $  1,246 $  1,258 $  1,072

Charge-offs:

     Residential real estate           2                44       15
     Consumer                         36       63       25       21       33
     Commercial real estate
     Commercial                                                  27
                                -------- -------- -------- -------- --------
Total charge-offs                     38       63       69       63       33
                                -------- -------- -------- -------- --------

Recoveries:

     Residential real estate           4        2       17        3        4
     Consumer                         15       17       11       13       28
     Commercial real estate
     Commercial                                                           37
                                -------- -------- -------- -------- --------
Total recoveries                      19       19       28       16       69
                                -------- -------- -------- -------- --------
Provision charged to expense         100      100      100       36      150
Allowance for possible loan
                                -------- -------- -------- -------- --------
     losses, end of period      $  1,442 $  1,361 $  1,305 $  1,247 $  1,258
                                ======== ======== ======== ======== ========

Total loans outstanding at
     end of period              $103,367 $ 96,901 $ 88,336  $83,946  $85,922

Average total loans outstanding
     for the year               $101,518  $93,193  $86,158  $84,302  $85,694

Ratio of net charge-offs to
     daily average loans outsta     0.02%    0.05%    0.05%    0.06%   (0.04)%

Ratio of net charge-offs to
     total loans outstanding        0.02%    0.05%    0.05%    0.06%   (0.04)%



                                    Page 4

<PAGE>   6



The allocation of the allowance for loan losses for the years ended
December 31 is:


                       Residential         Commercial
                       Real Estate Consumer   Real Commercial Unallocated Total
                                             Estate
                       ----------- ------  ------- ---------  ----------  -----
                                           (In thousands)

1997 Allowance amount      28        28       74       57      1,255  1,442
% of Total loans         58.8%      9.7%    20.2%    11.3%            100.0%

1996 Allowance amount      42        38        7       51      1,225  1,361
% of Total loans         58.5%      9.5%    22.0%    10.0%            100.0%

1995 Allowance amount      43        36       23       65      1,138  1,305
% of Total loans         52.9%     10.6%    24.3%    12.2%            100.0%

1994 Allowance amount       5        18       50       46      1,128  1,247
% of Total loans         50.5%     10.6%    27.5%    11.4%            100.0%

1993 Allowance amount      42        46       82       41      1,047  1,258   
% of Total loans         47.6%     12.2%    25.1%    15.1%            100.0%



The review of the loan portfolio revealed no undue concentrations of credit,
however, the portfolio continues to be highly concentrated in residential real
estate mortgages and highly dependent upon the tourist industry for the source
of repayment.  Because the reliance on tourism is both primary, (i.e. loans to
motels, hotels and restaurants, etc.) and secondary (i.e. loans to employees of
tourist related businesses), it is difficult to assess a specific dollar amount
of inherent loss potential.  Likewise, the residential  real estate market has
been stable or increasing, so inherent loss potential  in this concentration is
also difficult to reasonably assess.  Therefore, it is believed that a
reasonable margin should be maintained in the allowance for loan loss to cover
this undefined potential for loss within the loan portfolio.


The following is a summary of nonaccrual, past due and restructured loans as of
December 31:

                                 1997      1996     1995     1994     1993
                                              (In thousands)

Nonaccrual loans                $  21     $  70    $   -    $  161   $     161
Loans past due 90 days or more     78        61       80       132         338
Troubled debt restucturings         -         -        -         -           -
                                -----     -----    -----    ------   ---------
                                $  99     $ 131    $  80    $  293   $     499
                                =====     =====    =====    ======   =========

The gross interest income that would have been recorded for the period ending
December 31, 1997 if the loans would have been current in accordance with their
original terms was $ 4 thousand dollars.

                                    Page 5



<PAGE>   7



Deposits


The following table presents the remaining maturity of time deposits
individually exceeding $ 100,000 at December 31, 1997.


Up to 3 Months   $  7,184
3 to  6 Months      4,940
7 to 12 Months      2,035
Over 12 Months      3,562
                 --------
                 $ 17,721
                 ========



Supervision and Regulation

As a bank holding company within the meaning of the Bank Holding Company Act,
the Company is required by said Act to file annual reports of its operations
and such additional information as the Federal Reserve Board may require and is
subject, along with its subsidiary, to examination by the Federal Reserve
Board.  The Federal Reserve Board is the primary regulator of the Company.

The Bank Holding Company Act requires every bank holding company to obtain
prior approval of the Federal Reserve Board before it may merge with or
consolidate into another bank holding company, acquire substantially all the
assets of any bank, or acquire ownership or control of any voting shares of any
bank if after such acquisition it would own or control, directly or indirectly,
more than 5% of the voting shares of such bank holding company or bank.  The
Bank Holding Company Act also prohibits a bank holding company, with certain
exceptions, from acquiring direct or indirect ownership or control of more than
5% of the voting shares of any company which is not a bank and from engaging in
any business other than that of banking, managing and controlling banks or
furnishing services to banks and their subsidiaries.  However, holding
companies may engage in, and may own shares of companies engaged in, certain
businesses found by the Federal Reserve Board to be so closely related to
banking or the management or control of banks as to be a proper incident
thereto.

Under current regulations of the Federal Reserve Board, a holding company and
its nonbank subsidiaries are permitted, among other activities, to engage,
subject to certain specified limitations, in such banking related business
ventures as consumer finance, equipment leasing, computer service bureau and
software operations, data processing, discount securities brokerage, mortgage
banking and brokerage, sale and leaseback, and other forms of real estate
banking.  The Bank Holding Company Act does not place territorial restrictions
on the activities of nonbank subsidiaries of bank holding companies.

In addition, Federal legislation prohibits acquisition of "control" of a bank
or bank holding company without prior notice to certain federal bank
regulators.  "Control" in certain cases may include the acquisition of as
little as 10% of the outstanding shares of capital stock.

The Company's cash revenues are derived primarily from dividends paid by the
Bank.  National banking laws restrict the payment of cash dividends by a
national bank by providing, subject to certain exceptions, that dividends may
be paid only out of net profits then on hand after deducting 


                                    Page 6

<PAGE>   8


therefrom its losses and bad debts, and no dividends may be paid unless the
bank will have a surplus amounting to not less than one hundred percent (100%)
of its common capital stock.                                               


The Bank is a national banking association and as such is subject to the
regulations of, and supervision and regular examination by,  the Office of the
Comptroller of the Currency ("OCC").  Deposit accounts of the Bank are insured
by the Federal Deposit Insurance Corporation ("FDIC").  Requirements and
restrictions under the laws of the State of Michigan and Title 12 of the United
States Code include the requirements that banks maintain reserves against
deposits, restrictions on the nature and amount of loans which may be made by a
bank, and the interest that may be charged thereon, restrictions on the payment
of interest on certain deposits, and restrictions relating to investments and
other activities of a bank.  The Federal Reserve Board has established
guidelines for risk based capital by bank holding companies.  These guidelines
establish a risk adjusted ratio relating capital to risk-weighted assets and
off-balance sheet exposures.  These capital guidelines primarily define the
components of capital, categorize assets into different risk classes, and
include certain off-balance-sheet items in the calculation of capital
requirements.


An analysis of the Corporation's regulatory capital requirements at December
31, 1997 is presented on page 20 of the Registrant's 1997 Annual Report which
is incorporated herein by reference.


Competition

In its primary market, which includes Cheboygan County and parts of Emmet,
Mackinac, Presque Isle and Montmorency Counties, the Bank is one of two
principal banking institutions located within this market.  The competing bank
is a member of a multi-bank holding company with substantially more assets than
the Company.  There are also two credit unions, one savings and loan
association and a brokerage firm.  The Bank is the only independent community
bank in the Cheboygan County market.


On June 1, 1997, the Riegel - Neal Interstate Banking and Branching Efficiency
Act will be fully implemented allowing full interstate banking in Michigan and
other states which have opted into the program.  Since the Bank's niche is as a
community bank, it does not feel the addition of out of state banks to its
service area will have a significant impact on its business.  In order to
successfully compete, management has developed a sales and service culture,
stresses and rewards excellent customer service, and designs products to meet
the needs of the customer.  The Bank also utilizes its ability to sell loans in
the secondary market.


Employees

On December 31, 1997, the Bank employed 64 full-time and 17 part-time
employees.  This compares to 62 full-time and 14 part-time employees as of
December 31, 1996.  The Company has no full-time employees.  Its operation and
business are carried out by officers and employees of the Bank who are not
compensated by the Company.

                                    Page 7


<PAGE>   9

ITEM 2 - PROPERTIES

The Company and the Bank have their primary office at 303 North Main Street,
Cheboygan Michigan.  In addition, the Bank owns and operates the following
facilities: Onaway Office, 20581 W. State Street, Onaway; Mackinaw City Office,
580 S. Nicolet Street, Mackinaw City; Pellston Office, 200 Stimpson, Pellston;
Indian River Office, 3990 Straits Highway, Indian River; South Side drive-in,
991 1/2 South Main Street, Cheboygan; Downtown drive-in, 414 Division Street,
Cheboygan; East Side drive-in, 816 East State Street, Cheboygan.  All
properties are owned by the Bank free of any mortgages or encumbrances.


ITEM 3- LEGAL PROCEEDINGS.

Neither the Company nor the Bank are a party to any pending legal proceedings
other than the routine litigation that is incidental to the business of
lending.


ITEM 4-SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There have been no matters submitted to a vote of security holders during this
reporting period.



        PART II


ITEM 5-MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
          MATTERS.

The common stock of the Company has no public trading market.  All trades are
handled on a direct basis between buyer and seller.  The Bank acts as the
Company's transfer agent.  The principal market for the Company's stock
consists of existing shareholders, family members of existing shareholders and
individuals in its service area.


The information detailing the range of high and low bid information for the
equity for each full quarterly period within the two most recent fiscal years
can be found under the caption "Financial Highlights" of the Company's Annual
Report to Shareholders for the fiscal year ended December 31, 1997, which is
hereby incorporated by reference.


The information which indicates the amount of common equity that is subject to
outstanding options or warrants to purchase, or securities convertible into,
common equity of the registrant can be found in Note 8 on page 16 of the
Company's Annual Report to Shareholders for the fiscal year ended December 31,
1997, which is hereby incorporated by reference.



                                    Page 8

<PAGE>   10

There are no public offerings pending.


There are approximately 640 shareholders of record of the common stock of the
Company as of December 31,1997.


During 1997, the Company declared regular dividends of $ 1.31 per share plus a
special dividend of $ .48.  In 1996,  the Company declared regular dividends of
$ 1.25 plus a special dividend of $ .45. These per share statistics have been
retroactively adjusted for the 2 for 1 stock split of May 31, 1996 and the 5%
stock dividend of June 25,1997 and February 20, 1998. Subject to approval of
the Board of Directors of the Company and applicable law, the Company
anticipates that it will continue to pay a regular cash dividend equal to or
greater than the prior years.  Special dividends are considered each December
based on the current year's earnings.  These have resulted in a dividend payout
ratio averaging 66.0% for the past three years.


The Federal Reserve Board's Policy on the Payment of Cash Dividends by Bank
Holding Companies restricts the payment of cash dividends based on the
following criteria: (1) The Company's net income from operations over the past
year must be sufficient to fully fund the dividend and (2) the prospective rate
of earnings retention must be consistent with the Company's capital needs,
asset quality and overall financial condition.

ITEM 6-SELECTED FINANCIAL DATA.

This information is included on Page 4 under the caption "Financial Highlights"
of the Company's Annual Report to Shareholders for the fiscal year ended
December 31, 1997, which is hereby incorporated by reference.


ITEM 7-MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
          OF OPERATIONS.

This information is included on pages 24 through 31 of the Company's Annual
Report to Shareholders for the fiscal year ended December 31, 1997, which is
hereby incorporated by reference.


ITEM 7a-QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Not required as company meets requirements to be a small business filer.

ITEM 8-FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

This information is included on pages 7 through 22 of the Company's Annual
Report to Shareholders for the fiscal year ended December 31, 1997, which is
hereby incorporated by reference.


                                    Page 9


<PAGE>   11

ITEM 9-CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
          FINANCIAL DISCLOSURE.

None.


        PART III


ITEM 10-DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The information required by this item is included under the caption
"Information About Director Nominees" of the Company's proxy statement for the
annual meeting of shareholders scheduled for May 19, 1998, which is hereby
incorporated by reference.


Information about the executive officers of the Corporation is set forth below.


Name
- ----                           Position
                               --------
Robert E. Churchill            President and Chief Executive Officer of
                               the Corporation and Citizens National Bank
                               of Cheboygan

John P. Ward                   Senior Vice President, Secretary/Treasurer
                               of the Corporation and Senior Vice President
                               and Cashier of Citizens National Bank of
                               Cheboygan


John F. Ekdahl                 Senior Vice President of the Corporation and
                               Citizens National Bank of Cheboygan

Susan A. Eno                   Senior Vice President of the Corporation and
                               Citizens National Bank of Cheboygan


ITEM 11-EXECUTIVE COMPENSATION.

The information required by this item is included under the caption
"Compensation of Executive Officers" of the Company's proxy statement for the
annual meeting of shareholders scheduled for May 19, 1998, which is hereby
incorporated by reference.


                                   Page 10


<PAGE>   12



ITEM 12-SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

The information required by this item is included under the caption "Ownership
of Common Stock" of the Company's proxy statement for the annual meeting of
shareholders scheduled for May 19, 1998, which is hereby incorporated by
reference.

ITEM 13-CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

The information required by this item is included under the caption
"Indebtedness of and Transactions with Management" of the Company's proxy
statement for the annual meeting of shareholders scheduled for May 19, 1998,
which is hereby incorporated by reference.



        PART IV


ITEM 14-EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K.

     (a)     (1) Financial Statements.  The following financial statements and
             independent auditor's report of CNB Corporation and its subsidiary
             are filed as part of this report:

             Consolidated Balance Sheets-December 31, 1997 and 1996.

             Consolidated Statements of Income for the years ended December 31,
             1997, 1996 and 1995.

             Consolidated Statements of Changes in Shareholders' Equity for the
             years ended December 31,1997, 1996 and 1995.

             Consolidated Statements of Cash Flows for the years ended December
             31, 1997, 1996 and 1995.

             Notes to Consolidated Financial Statements.

             Independent Auditor's Report dated February 4, 1998.

The financial statements, the notes to financial statements and the report of
independent auditors listed above are incorporated by reference in Item 8 of
this report.

             (2) Financial Statement Schedules. Not applicable

             (3) Exhibits.

                  (3a) Articles of Incorporation.  Previously filed as exhibit
                  to the registrant's Form 10-KSB filed April 26, 1996.

                  (3b) By-laws.  Previously filed as exhibit to the
                  registrant's Form 10-KSB filed April 26, 1996.



                                   Page 11


<PAGE>   13

                  (11)  Statement regarding computation per share earnings.
                  This information is disclosed in Note 10 to the Company's
                  Financial Statements for the year ended December 31, 1997,
                  which is hereby incorporated by reference.

                  (13)  Annual report to shareholders for the year ended
                  December 31, 1997 (filed herewith).

                  (21)  Subsidiaries of the Company.  Citizens National Bank of
                  Cheboygan is the subsidiary of the Company.

                  (27)  Financial Data Schedule.

     (b)          Reports of Form 8-K.  No reports of Form 8-K were filed during
                  the last calendar quarter of the year covered by this report.


                                   Page 12

<PAGE>   14
        SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                CNB CORPORATION
                                  (Registrant)

Date March 26, 1998

/s/ Robert E. Churchill
- ------------------------------------
Robert E. Churchill
President and Chief Executive Officer


Pursuant to the requirement of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the registrant and
in the capacities indicated on March 26, 1998.

/s/ Thomas J. Fisher            /s/ Vincent J. Hillesheim
- -------------------------       --------------------------------
Thomas J. Fisher                Vincent J. Hillesheim
Chairman of the Board           Director

/s/ Robert E. Churchill         /s/ John L. Ormsbee
- -------------------------       --------------------------------
Robert E. Churchill             John L. Ormsbee
Director                        Director
President and 
Chief Executive Officer

/s/ Kathleen M. Darrow          /s/ Francis J. VanAntwerp, Jr.
- -------------------------       --------------------------------
Kathleen M. Darrow              Francis J. VanAntwerp, Jr.
Director                        Director


/s/ Thomas J. Ellenberger       /s/ John P. Ward  
- -------------------------       --------------------------------
Thomas J. Ellenberger           John P. Ward
Director                        Director
                                Senior Vice President, Secretary 
                                and Treasurer

/s/ Susan A. Eno                /s/ John F. Ekdahl
- -------------------------       --------------------------------
Susan A. Eno                    John F. Ekdahl
Senior Vice President           Senior Vice President
<PAGE>   15

                              INDEX TO EXHIBITS




EXHIBIT NO.           DESCRIPTION
- ------- ---           -----------


   (3a)           Articles of Incorporation.  Previously filed as exhibit
                  to the registrant's Form 10-KSB filed April 26, 1996.

   (3b)           By-laws.  Previously filed as exhibit to the
                  registrant's Form 10-KSB filed April 26, 1996.

   (11)           Statement regarding computation per share earnings.
                  This information is disclosed in Note 10 to the Company's
                  Financial Statements for the year ended December 31, 1997,
                  which is hereby incorporated by reference.

   (13)           Annual report to shareholders for the year ended
                  December 31, 1997 (filed herewith).

   (21)           Subsidiaries of the Company.  Citizens National Bank of
                  Cheboygan is the subsidiary of the Company.

   (27)           Financial Data Schedule.










<PAGE>   1

                                                                     EXHIBIT 13
                     CNB CORPORATION  1997 ANNUAL REPORT
- --------------------------------------------------------------------------------



                              Table of Contents



A Note of Appreciation...........................................   1

President's Message..............................................   2

1997 Community Support...........................................   3

Financial Highlights.............................................   4

Progress Report..................................................   5

Consolidated Balance Sheets......................................   7

Consolidated Statements of Income................................   8

Consolidated Statements of Shareholders' Equity..................   9

Consolidated Statements of Cash Flows............................  10

Notes to Consolidated Financial Statements.......................  11

Independent Auditor's Report.....................................  23

Management's Discussion And Analysis.............................  24

Mission Statement................................................  32

CNB Corporation Directors........................................  34

CNB Officers and Community Advisors..............................  35

CNB Staff........................................................  36














<PAGE>   2
                      CNB CORPORATION 1997 ANNUAL REPORT


                              PRESIDENT'S  MESSAGE



I am pleased to report that 1997 was a successful year for CNB Corporation.

Net income for CNB Corporation for the year ended December 31, 1997, was
$2,880,000 or $2.81 per share, compared to $2,601,000, or $2.53 per share,
earned during the same period last year.  Cash dividends declared during 1997
totaled $1.79 per share, including a special dividend of $.48 per share,
compared with $1.70 in dividends during 1996.

Earnings for the year increased 10.70%, due to an increase in interest income
earned on loans and investments as well as other non-interest income.  The
corporation's return on average assets (ROA) for 1997 was 1.58% versus 1.51%
the prior year.  The return on average equity (ROE) was 16.10% versus 15.33%
for 1996.

Deposits as of December 31, 1997, were $170.3 million, compared with $153.9
million the same time last year, an increase of 10.7%.  Loans as of December
31, 1997, were $103.4 million, compared with $96.9 million for the same time
last year, an increase of 6.7%.  Assets of the Corporation at year end, were
$190.8 million versus $173.1 million last year, an increase of 10.2%.

During the year, CNB introduced "TeleBanc".  With the new service, customers
are able to check account balances, transfer funds, and make loan payments from
anywhere there is a phone, 24 hours a day.

In December, we were saddened by the death of Francis E. Lindsay, former
Chairman of the Board of CNB Corporation and Citizens National Bank.  Francis
served on our board for more than 30 years and provided legal advice to the
Bank as general counsel for more than 40 years.

In February of this year, we were saddened by the death of Richard D. Burrus,
assistant vice president and branch manager of our Indian River Office.  Dick
was scheduled to retire from the Bank at the end of March.  Dick joined CNB in
1982 and was assigned to our Indian River Office since that time.

John P. Ward, senior vice president and secretary-treasurer of the Corporation,
has announced that he will retire at the end of June.  John joined Citizens
National Bank in 1973 and became a director of Citizens National Bank in 1994
and was elected a director of CNB Corporation in 1995.  Since 1973, John has
made many contributions to our organization for which we are most appreciative.
We wish him a happy and healthy retirement.  We are pleased that John will
continue to serve on the board of the Corporation and the Bank after his
retirement.

Irene M. English has been promoted to vice president of the Bank.  Irene has
been controller of CNB since 1997.  She has been employed with Citizens
National Bank since 1985.

You are undoubtedly aware of the "millennium bug" or the year 2000 computer
problems which pose a threat to businesses everywhere.  The problems, which
will evidence themselves in the year 2000, derive from a two digit limitation
in source programming for calendar years.  CNB has assembled an internal
technology committee to thoroughly identify and correct any potential problems
in this area well ahead of the year 2000.

The remodeling of the Onaway office has begun.  The renovation will include a
new teller line and upgraded drive-in service.  The new facility will allow us
to provide more convenient and efficient service to our customers.

We anticipate another good tourist season this year.  The national economy
remains strong and the economy in the State of Michigan is generally good.

The progress made by your bank during the past year would not have been
possible if it were not for our dedicated staff and committed board of
directors and community advisors.  The support of our stockholders and many
other friends has also been greatly appreciated.

I look forward to seeing you at our annual meeting.

Sincerely,



/s/ Robert E. Churchill
Robert E. Churchill
President

                                      2
<PAGE>   3


                      CNB CORPORATION 1997 ANNUAL REPORT


                             FINANCIAL HIGHLIGHTS




<TABLE>
<CAPTION>
                                             1997              1996             1995             1994           1993
                                             ----              ----             ----             ----           ----
                                                               (In thousands, except per share data)                       
<S>                                  <C>                 <C>               <C>              <C>           <C>       
OPERATING STATISTICS                                                                                        
    Interest income                      $  13,728         $   12,958        $  12,069        $  10,274    $   9,809
    Interest expense                         6,087              5,699            5,108            3,958        3,648
    Net interest income                      7,641              7,259            6,961            6,316        6,161
    Income before income taxes               4,151              3,723            3,424            2,635        2,443
    Net income                               2,880              2,601            2,365            1,827        1,737
    Basic earnings per share                  2.81               2.53             2.31             1.78         1.69
    Diluted earnings per share                2.80               2.53             2.31             1.78         1.69
    Return on average assets                                                                                
     (ROA)                                    1.58%              1.51%            1.48%            1.20%        1.20%
    Return on average                                                                                       
     shareholders' equity (ROE)              16.10%             15.33%           14.75%           12.04%       11.92%
                                                                                                            
BALANCE SHEET STATISTICS                                                                                    
    Securities                              61,645             61,070           58,831           55,549       51,356
    Loans                                  103,367             96,901           88,346           83,946       85,922
    Deposits                               170,326            153,868          148,149          136,000      133,366
    Total assets                           190,822            173,085          166,560          152,962      149,655
                                                                                                            
CAPITAL STATISTICS                                                                                          
    Shareholders' equity                    18,145             17,053           16,251           15,302       14,754
    Book value per share (1)                 17.69              16.63            15.84            14.91        13.70
    Cash dividend per share (1)               1.79               1.70             1.54             1.13          .93
    Dividend payout ratio                    63.92%             67.09%           66.89%           63.65%       53.97%
    Average equity to average                                                                               
     total assets                             9.82%              9.88%           10.04%            9.98%       10.13%
                                                                                                            
CREDIT STATISTICS                                                                                           
    Net charge-offs to gross loans             .02%               .05%             .05%             .06%        (.04)%
    Nonperforming assets                                                                                    
     to gross loans                            .10%               .14%             .09%             .35%         .58%
    Allowance for loan losses                                                                               
     to gross loans                           1.40%              1.41%            1.48%            1.49%        1.47%
    Allowance for loan losses                                                                               
     to nonperforming assets                 14.57X             10.39X           16.33X            4.29X        2.52X
</TABLE>


(1)  Restated for stock dividends, including the five percent stock dividend
     to be paid February 20, 1998.

PRICE RANGE FOR COMMON STOCK

The following table shows the high and low selling prices of known transactions
in common stock of the Company for each quarter of 1997 and 1996.  The Company
had 640 shareholders as of December 31, 1997.  The prices and dividends per
share have been restated to reflect the 1996 stock split, 1997 5% stock
dividend and the subsequent 5% stock dividend declared in 1998.


<TABLE>
<CAPTION>
                         1 9 9 7                     1 9 9 6
                         -------                     -------
                                    Cash                        Cash
                  Market Price    Dividends   Market Price    Dividends
        Quarter   High     Low    Declared    High     Low    Declared
        -------  ------  -------  ---------  ------  -------  ---------
        <S>     <C>      <C>       <C>      <C>    <C>        <C>

        1st      $32.65   $29.02    $0.32   $25.85   $24.04     $0.29
        2nd       35.24    35.24     0.33    27.21    25.85      0.32
        3rd       35.24    34.76     0.33    29.02    29.02      0.32
        4th       40.95    35.24     0.81    29.02    29.02      0.77
</TABLE>

                                      4

<PAGE>   4
                      CNB CORPORATION 1997 ANNUAL REPORT


                         CONSOLIDATED BALANCE SHEETS
                          December 31, 1997 and 1996




<TABLE>
<CAPTION>
                                                          1997        1996
                                                          ----        ----
                                                          (In thousands)
     <S>                                                <C>       <C>
     ASSETS
     Cash and due from banks                              $6,004    $6,054
     Federal funds sold                                   13,300     4,050
                                                        --------  --------
        Total cash and cash equivalents                   19,304    10,104
     Interest-earning deposits                             1,000         -
     Securities available for sale                        19,162     7,985
     Securities held to maturity (market value of
      $42,718 in 1997 and $53,416 in 1996)                42,483    53,085
     Other securities                                        716       180
     Loans, net                                          101,797    95,380
     Premises and equipment, net                           2,686     2,679
     Other assets                                          3,674     3,672
                                                        --------  --------

        Total assets                                    $190,822  $173,085
                                                        ========  ========

     LIABILITIES
     Deposits
        Non-interest bearing                             $23,769   $22,419
        Interest-bearing                                 146,557   131,449
                                                        --------  --------
            Total deposits                               170,326   153,868
     Other liabilities                                     2,351     2,164
                                                        --------  --------
        Total liabilities                                172,677   156,032
                                                        --------  --------

     SHAREHOLDERS' EQUITY
     Common stock - $2.50 par value; 2,000,000 shares
      authorized; 977,289 and 930,772 shares issued
      and outstanding in 1997 and 1996                     2,443     2,327
     Additional paid-in capital                            6,583     4,979
     Retained earnings                                     9,066     9,749
     Unrealized gains (losses) on securities available
      for sale, net of tax                                    53        (2)
                                                        --------  --------
        Total shareholders' equity                        18,145    17,053
                                                        --------  --------

            Total liabilities and shareholders' equity  $190,822  $173,085
                                                        ========  ========
</TABLE>
See accompanying notes to consolidated financial statements.

                                      7


<PAGE>   5
                      CNB CORPORATION 1997 ANNUAL REPORT


                      CONSOLIDATED STATEMENTS OF INCOME
                 Years ended December 31, 1997, 1996 and 1995

                                                                 

<TABLE>
<CAPTION>
                                           1997           1996           1995
                                           ----           ----           ----     
                                           (In thousands, except per share data)
<S>                                    <C>            <C>            <C>
INTEREST INCOME
  Loans, including fees                    $ 9,608        $ 8,934        $ 8,456
  Securities
     Taxable                                 3,194          3,349          2,864
     Tax-exempt                                391            402            264
  Federal funds sold                           535            273            485
                                           -------        -------        -------
     Total interest income                  13,728         12,958         12,069

INTEREST EXPENSE ON DEPOSITS                 6,087          5,699          5,108
                                           -------        -------        -------

NET INTEREST INCOME                          7,641          7,259          6,961

Provision for loan losses                      100            100            100
                                           -------        -------         ------

NET INTEREST INCOME AFTER PROVISION
FOR LOAN LOSSES                              7,541          7,159          6,861
                                           -------        -------         ------

NON-INTEREST INCOME
  Service charges and fees                     816            711            703
  Loan sales and servicing fees                217            140            182
  Other income                                 268            187            151
                                           -------        -------        -------
     Total non-interest income               1,301          1,038          1,036
                                           -------        -------        -------

NON-INTEREST EXPENSES
  Salaries and employee benefits             2,715          2,573          2,517
  Occupancy                                    620            589            552
  FDIC insurance premiums                       19              2            157
  Supplies                                     186            161            154
  Other expenses                             1,151          1,149          1,093
                                           -------        -------        -------
     Total non-interest expenses             4,691          4,474          4,473
                                           -------        -------        -------

INCOME BEFORE INCOME TAXES                   4,151          3,723          3,424

Income tax expense                           1,271          1,122          1,059
                                           -------        -------        -------

NET INCOME                                 $ 2,880        $ 2,601        $ 2,365
                                           =======        =======        =======

Basic earnings per share                   $  2.81        $  2.53        $  2.31
Diluted earnings per share                 $  2.80        $  2.53        $  2.31
</TABLE>



                                      8
<PAGE>   6


                      CNB CORPORATION 1997 ANNUAL REPORT




          CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
                 Years ended December 31, 1997, 1996 and 1995





<TABLE>
<CAPTION>
                                                                                                    UNREALIZED
                                                                                                  GAINS (LOSSES)
                                                                                                   ON SECURITIES
                                                                                                    AVAILABLE
                                                                  ADDITIONAL                        FOR SALE,
                                                        COMMON      PAID-IN        RETAINED            NET            TOTAL      
                                                        STOCK       CAPITAL        EARNINGS           OF TAX         EQUITY      
                                                        ------   -------------   -------------    --------------     -------     
<S>                                                     <C>     <C>            <C>            <C>                <C>         
(In thousands, except per share data)                                                                                        
                                                                                                                             
BALANCE - JANUARY 1, 1995                               $2,327         $4,979         $8,111         $  (115)    $15,302     
                                                                                                                             
Net income                                                                             2,365                       2,365     
Cash dividends - $1.54 per share                                                      (1,583)                     (1,583)     
Net change in unrealized gains (losses)                
    on securities available for sale                                                                     167         167     
                                                       -------        -------        -------         -------    --------     
                                                                                                                             
BALANCE - DECEMBER 31, 1995                              2,327          4,979          8,893              52      16,251     
                                                                                                                             
Net income                                                                             2,601                       2,601     
Cash dividends - $1.70 per share                                                      (1,745)                     (1,745)     
Net change in unrealized gains (losses)                
    on securities available for sale                                                                     (54)        (54)     
                                                       -------        -------        -------         -------    --------     
                                                                                                                             
BALANCE - DECEMBER 31, 1996                              2,327          4,979          9,749              (2)     17,053     
                                                                                                                             
Net income                                                                             2,880                       2,880     
Cash dividends - $1.79 per share                                                      (1,841)                     (1,841)     
5% stock dividend                                          116          1,599         (1,722)                         (7)     
Shares issued under stock option plan                                       5                                          5     
Net change in unrealized gains (losses)              
    on securities available for sale                                                                      55          55     
                                                       -------        -------        -------         -------    --------     
                                          
BALANCE - DECEMBER 31, 1997                            $ 2,443        $ 6,583        $ 9,066         $    53    $ 18,145
                                                       =======        =======        =======         =======    ========
</TABLE>                                  
                                      9
<PAGE>   7

                    CNB CORPORATION     1997 ANNUAL REPORT



                    CONSOLIDATED STATEMENTS OF CASH FLOWS
                 Years ended December 31, 1997, 1996 and 1995


<TABLE>
<CAPTION>
                                                            1997            1996          1995
                                                            ----            ----          ----
                                                                       (In thousands)
<S>                                                     <C>            <C>            <C>        
CASH FLOWS FROM OPERATING ACTIVITIES
    Net income                                            $  2,880       $  2,601       $  2,365  
    Adjustments to reconcile net income to net cash                                               
     from operating activities                                                                    
        Depreciation                                           275            267            230  
        Accretion and amortization of investment                                                  
         securities, net                                       121            312            722  
        Provision for loan losses                              100            100            100  
        Loans originated for sale                           (7,741)        (3,710)        (5,361) 
        Proceeds from sales of loans originated for sale     7,745          3,727          5,396  
        Gain on sales of loans                                  (4)           (17)           (35) 
        (Increase) decrease in other assets                    (30)            15           (121) 
        Increase (decrease) in other liabilities               146            (26)           200  
                                                          --------       --------       --------  
            Total adjustments                                  612            668          1,131  
                                                          --------       --------       --------  
                Net cash from operating activities           3,492          3,269          3,496  
                                                          --------       --------       --------  
                                                                                                  
CASH FLOWS FROM INVESTING ACTIVITIES                                                              
    Net increase in interest-earning deposits               (1,000)             -              -  
    Proceeds from maturities of securities                                                        
     available for sale                                      3,000          5,780              -  
    Purchase of securities available for sale              (14,105)        (2,029)        (1,978) 
    Proceeds from maturities of securities held                                                   
     to maturity                                            25,144         31,853         27,054  
    Purchase of securities held to maturity                (14,651)       (38,417)       (28,829) 
    Purchase of other securities                              (536)             -              -  
    Net increase in portfolio loans                         (6,517)        (8,638)        (4,483) 
    Premises and equipment expenditures                       (282)        (1,001)          (135) 
                                                          --------       --------       --------  
        Net cash from investing activities                  (8,947)       (12,452)        (8,371) 
                                                                                                  
CASH FLOWS FROM FINANCING ACTIVITIES                                                              
    Net increase in deposits                                16,458          5,719         12,149  
    Dividends paid                                          (1,808)        (1,722)        (1,282) 
    Proceeds from exercise of stock options                      5              -              -  
                                                          --------       --------       --------  
        Net cash from financing activities                  14,655          3,997         10,867  
                                                                                                  
Net change in cash and cash equivalents                      9,200         (5,186)         5,992  
                                                                                                  
Cash and cash equivalents at beginning of year              10,104         15,290          9,298  
                                                          --------       --------       --------  
                                                                                                  
Cash and cash equivalents at end of year                  $ 19,304       $ 10,104       $ 15,290  
                                                          ========       ========       ========  
                                                                                                  
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION                                                  
    Cash paid during the period for                                                               
        Interest                                          $  6,046       $  5,693       $  5,028  
        Income taxes                                         1,123          1,056          1,050         

SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING ACTIVITIES
    Transfer from securities held to maturity
     to securities available for sale                     $      -       $      -       $  4,941
</TABLE>

                                      10

<PAGE>   8

                      CNB CORPORATION 1997 ANNUAL REPORT




                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

PRINCIPLES OF CONSOLIDATION:  The consolidated financial statements include CNB
Corporation (the Company) and its wholly-owned subsidiary, Citizens National
Bank (the Bank).  All significant intercompany accounts and transactions are
eliminated in consolidation.

NATURE OF OPERATIONS AND CONCENTRATIONS OF CREDIT RISK:  The Company is a
one-bank holding company which conducts no direct business activities.  All
business activities are performed by the Bank.

The Bank provides a full range of banking services to individuals, agricultural
businesses, commercial businesses and light industries located in its service
area.  It maintains a diversified loan portfolio, including loans to
individuals for home mortgages, automobiles and personal expenditures, and
loans to business enterprises for current operations and expansion.  The Bank
offers a variety of deposit accounts, including checking, savings, money
market, individual retirement accounts and certificates of deposit.

The principal markets for the Bank's financial services are the Michigan
communities in which the Bank is located and the area immediately surrounding
these communities.  The Bank serves these markets through eight offices located
in Cheboygan, Presque Isle, and Emmet Counties in Northern Lower Michigan.

USE OF ESTIMATES:  To prepare financial statements in conformity with generally
accepted accounting principles, management makes estimates and assumptions
based on available information.  These estimates and assumptions affect the
amounts reported in the financial statements and the disclosures provided, and
future results could differ.  The allowance for loan losses, fair values of
financial instruments, and status of contingencies are particularly subject to
change in the near term.

CASH FLOW REPORTING:  Cash and cash equivalents include cash and due from banks
and federal funds sold.  Net cash flows are reported for customer loan and
deposit transactions and interest-earning time deposits with other financial
institutions.

SECURITIES:  Securities classified as held to maturity are carried at amortized
cost when management has the positive intent and ability to hold them to
maturity.  Securities are classified as available for sale when they might be
sold before maturity.  Securities available for sale are carried at fair value,
with unrealized holding gains and losses reported in shareholders' equity, net
of tax. Trading securities are carried at fair value, with changes in
unrealized holding gains and losses included in income.  Realized gains and
losses are based on specific identification of amortized cost.  Securities are
written down to fair value when a decline in fair value is not temporary.
Interest income includes amortization of purchase premium or discount.  

Other securities, which include Federal Reserve Bank and Federal Home Loan Bank
stocks, are carried at cost.

LOANS:  Loans are reported at the principal balance outstanding, net of
deferred loan fees and costs.  Loans held for sale are reported at the lower of
cost or market, on an aggregate basis.

LOAN INCOME:  Interest income on loans is accrued over the term of the loans
based upon the principal outstanding and includes amortization of net deferred
loan fees and costs over the loan term.  Interest income is not reported when
full loan repayment is in doubt, typically when payments are past due over 90
days, unless the loan is both well secured and in the process of collection.
Payments received on such loans are reported as principal reductions.

ALLOWANCE FOR LOAN LOSSES:  The allowance for loan losses is a valuation
allowance for probable credit losses, increased by the provision for loan
losses and decreased by charge-offs less recoveries.  Management estimates the
allowance balance required based on past loan loss experience, known and
inherent risks in the portfolio, information about specific borrower situations
and estimated collateral values, economic conditions and other factors.
Allocations of the allowance may be made for specific loans, but the entire
allowance is available for any loan that, in management's judgment, should be
charged-off.

Loan impairment is reported when full payment under the loan terms is not
expected.  Impairment is evaluated 


                                      11


<PAGE>   9

                      CNB CORPORATION 1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
                                                                              
in total for smaller-balance loans of similar nature such as residential
mortgage, consumer and credit card loans, and on an individual loan basis for
other loans.  If a loan is impaired, a portion of the allowance is allocated so
that the loan is reported, net, at the present value of estimated future cash
flows using the loan's existing rate or at the fair value of collateral if
repayment is expected solely from the collateral.  Loans are evaluated for
impairment when payments are delayed, typically 90 days or more, or when it is
probable that all principal and interest amounts will not be collected according
to the original terms of the loan.

PREMISES AND EQUIPMENT:  Premises and equipment are stated at cost less
accumulated depreciation.  Depreciation is computed on the straight-line method
over  the assets useful lives.  These assets are reviewed for impairment when
events indicate the carrying amount may not be recoverable.  Maintenance and
repairs are charged to expense and improvements are capitalized.

OTHER REAL ESTATE OWNED:  Real estate properties acquired through, or in lieu
of, loan foreclosure are initially recorded at fair value at acquisition.  Any
reduction to fair value from the carrying value of the related loan is
accounted for as a loan loss.  After acquisition, a valuation allowance reduces
the reported amount to the lower of the initial amount or fair value less costs
to sell.  Expenses, gains and losses on disposition, and changes in the
valuation allowance are reported in other expenses.

SERVICING RIGHTS:  Servicing rights represent the allocated value of servicing
rights retained on loans sold.  Servicing rights are expensed in proportion to,
and over the period of, estimated net servicing revenues.  Impairment is
evaluated based on the fair value of the rights, using groupings of the
underlying loans as to interest rates and then, secondarily, as to geographic
and prepayment characteristics.  Any impairment of a grouping is reported as a
valuation allowance.

EMPLOYEE BENEFITS:  A defined benefit pension plan covers substantially all
employees, with benefits based on years of service and compensation prior to
retirement.  Contributions to the plan are based on the maximum amount
deductible for income tax purposes.  A 401(k) savings and retirement plan has
also been established and covers substantially all employees.  Contributions to
the 401(k) plan are made and expensed annually.

STOCK OPTIONS:  No expense for stock options is recorded, as the grant price
equals the market price of the stock at grant date.  Pro forma disclosures show
the effect on income and earnings per share had the options' fair value been
recorded using an option pricing model.  The pro forma effect is expected to
increase in the future.  Options granted vest over one year and have a maximum
term of ten years.  There are 41,343 shares authorized for future grant.

INCOME TAXES:  Income tax expense is the sum of the current year income tax due
or refundable and the change in deferred tax assets and liabilities.  Deferred
tax assets and liabilities are the expected future tax consequences of
temporary differences between the carrying amounts and tax bases of assets and
liabilities, computed using enacted tax rates.  A valuation allowance, if
needed, reduces deferred tax assets to the amount expected to be realized.

EARNINGS AND DIVIDENDS PER SHARE:  Basic earnings per share is based on
weighted-average shares outstanding.  Diluted earnings per share further
assumes issuance of any dilutive potential shares.  The accounting standard for
computing earnings per share was revised for 1997, and all earnings per share
previously reported are restated to follow the new standard.  On January 18,
1998 the board of directors declared a five percent stock dividend to be paid
on February 20, 1998 to shareholders.  Earnings per share and dividends per
share have been restated for all subsequent stock splits and stock dividends,
including the five percent stock dividend declared January 18, 1998.

In 1996 and 1997, shareholders of the Company approved an increase in the
number of authorized shares from 500,000 to 1,000,000 and from 1,000,000 to
2,000,000, respectively.

STOCK SPLITS AND STOCK DIVIDENDS:  Cash dividends per share are based on the
number of shares outstanding at the date of declaration, retroactively adjusted
for stock dividends.  Dividends issued in stock are reported by transferring
the market value of the stock issued from retained earnings to 


                                      12
<PAGE>   10

                      CNB CORPORATION 1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

common stock and additional paid-in capital.  Stock splits are recorded
by adjusting par value. Fractional shares are paid in cash for all stock splits
and dividends.  A five percent stock dividend was declared in 1997 and 1998 and
a two-for-one stock split was declared in 1996.

FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK:  The Company, in the normal
course of business, makes commitments to extend credit which are not reflected
in the consolidated financial statements.

FAIR VALUES OF FINANCIAL INSTRUMENTS:  Fair values of financial instruments are
estimated using relevant market information and other assumptions.  Fair value
estimates involve uncertainties and matters of significant judgment regarding
interest rates, credit risk, prepayments, and other factors, especially in the
absence of broad markets for particular items.  Changes in assumptions or in
market conditions could significantly affect the estimates.  The fair value
estimates of existing on- and off-balance-sheet financial instruments do not
include the value of anticipated future business or the values of assets and
liabilities not considered financial instruments.

RECLASSIFICATION:  Some items in prior financial statements have been
reclassified to conform with the current presentation.


NOTE 2 - SECURITIES

The amortized cost and fair values of securities at year end, were as follows:


<TABLE>
<CAPTION>
                                                     Gross           Gross     
                                      Amortized    Unrealized      Unrealized     Fair
                                        Cost         Gains           Losses       Value
Available for sale                    ---------    ----------      ----------    -------
   1997                                                  (In thousands)      
<S>                                 <C>            <C>             <C>          <C>     
         U.S. Government and agency  $  16,085     $       39     $       (8)    $16,116
         State and municipal             2,997             49              -       3,046
                                     ---------     ----------     ----------     -------
                                                                                        
                                     $  19,082     $       88     $       (8)    $19,162
                                     =========     ==========     ==========     =======
 1996                                                       
         U.S. Government and agency  $   7,988     $        7     $      (10)    $ 7,985
                                     ---------     ----------     ----------     -------
                                                                                        
                                     $   7,988     $        7     $      (10)    $ 7,985
                                     =========     ==========     ==========     =======
                                                                                        
Held to maturity                                                                        
 1997                                                                                   
         U.S. Government and agency  $  28,529     $      137     $      (26)    $28,640
         State and municipal            13,954            135            (11)     14,078
                                     ---------     ----------     ----------     -------
                                                                                        
                                     $  42,483     $      272     $      (37)    $42,718
                                     =========     ==========     ==========     =======
                                                                                        
 1996                                                                                   
         U.S. Government and agency  $  42,013     $      271     $      (75)    $42,209
         State and municipal            11,072            142             (7)     11,207
                                     ---------     ----------     ----------     -------
                                                                                        
                                     $  53,085     $      413     $      (82)    $53,416
                                     =========     ==========     ==========     =======
</TABLE>      


There were no sales of securities during 1997, 1996 or 1995.

Contractual maturities of debt securities at year end 1997 were as follows.
Expected maturities may differ from contractual maturity because borrowers may
have the right to call or prepay obligations with or without call or prepayment
penalties.


                                      13
<PAGE>   11


                      CNB CORPORATION 1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
  NOTE 2 - SECURITIES (Continued)
                                     Available For Sale           Held to Maturity        
                                    Amortized      Fair         Amortized      Fair       
                                      Cost         Value          Cost        Value       
                                    ---------    ---------      ---------    --------     
                                                 (In thousands)                         
  <S>                               <C>          <C>          <C>          <C>            
        Due in one year or less     $   5,201    $   5,205     $  18,721    $ 18,730       
        Due from one to five years     12,922       12,967        22,315      22,456       
        Due from five to ten years        959          990           954         987       
        Due after ten years                 -            -           493         545       
                                    ---------    ---------     ---------    --------       
                                                                                          
                                    $  19,082    $  19,162     $  42,483    $ 42,718       
                                    =========    =========     =========    ========                   
</TABLE>


Securities with a carrying value of $997,000 were pledged at December 31, 1997,
to secure public deposits and for other purposes.

Except as indicated below, total securities of any state (including its
political subdivisions) were less than 10% of shareholders' equity.  At year
end 1997 and 1996, the amortized cost of securities issued by the state of
Michigan and all of its political subdivisions totaled $9,778,000 and
$5,279,000 with an estimated fair value of $9,906,000 and $5,329,000,
respectively.  At year end 1997 and 1996, the amortized cost of securities
issued by the state of Illinois and all of its political subdivisions totaled
$2,639,000 and $3,153,000 with an estimated fair value of $2,663,000 and
$3,209,000, respectively.


NOTE 3 - LOANS


<TABLE>
<CAPTION>
Year end loans were as follows:
                                                                                      1997            1996   
                                                                                      ----            ----   
                                                                                        (In thousands)                      
<S>                                                                            <C>                 <C>       
      Residential real estate                                                        $ 60,754      $56,699   
      Consumer                                                                         10,009        9,239   
      Commercial real estate                                                           20,899       21,331   
      Commercial                                                                       11,705        9,632   
                                                                                     --------      -------   
                                                                                      103,367       96,901   
      Deferred loan origination fees, net                                                (128)        (160)   
      Allowance for loan losses                                                        (1,442)      (1,361)   
                                                                                     --------      -------   
                                                                                                             
                                                                                     $101,797      $95,380   
                                                                                     ========      =======   

</TABLE>

Activity in the allowance for loan losses is summarized as follows:

<TABLE>
<CAPTION>
                                                     1997           1996         1995
                                                     ----           ----         ----   
                                                             (In thousands)
    <S>                                           <C>           <C>          <C>
      Beginning balance                              $1,361        $1,305       $1,246
      Provision for loan losses                         100           100          100
      Charge-offs                                       (38)          (63)         (69)
      Recoveries                                         19            19           28
                                                     ------        ------      -------
                                                                 
      Ending balance                                 $1,442        $1,361       $1,305
                                                     ======        ======      =======
</TABLE>


The Company had no impaired loans for 1997 and 1996.  There were no loans held
for sale at year end 1997 and 1996.

                                      14
<PAGE>   12
                    CNB CORPORATION     1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS




NOTE 4 - LOAN SERVICING

Mortgage loans serviced for others are not reported as assets.  These loans
totaled $27,414,000 and $23,184,000 at year end 1997 and 1996, respectively.
Related escrow deposit balances were $29,000 and $35,000, respectively.


NOTE 5 - PREMISES AND EQUIPMENT


<TABLE>
<CAPTION>
Year end premises and equipment were as follows:
                                            1997     1996
                                           -------  -------
<S>                                        <C>      <C>
                                           (In thousands)

Real estate and buildings                   $3,355   $3,215
Furniture and fixtures                       2,866    2,724
                                           -------  -------
                                             6,221    5,939
Less accumulated depreciation               (3,535)  (3,260)
                                           -------  -------

                                            $2,686   $2,679
                                           =======  =======
</TABLE>


Depreciation expense amounted to $275,000, $267,000 and $230,000 in 1997, 1996
and 1995, respectively.

NOTE 6 - DEPOSITS

Time deposit accounts individually exceeding $100,000 total $17,721,000 and
$9,732,000 at year end 1997 and 1996, respectively.

At year end 1997, the scheduled maturities of time deposits are as follows for
the years ending December 31:
<TABLE>
<CAPTION>
                                  (In thousands)
             <S>                     <C>
             1998                      $46,087
             1999                       14,857
             2000                        3,613
             2001                        1,886
             2002                        1,516
                                       -------
                    
                                       $67,959
                                       =======
</TABLE>



NOTE 7 - EMPLOYEE BENEFITS

DEFINED BENEFIT RETIREMENT PLAN:  The Company has a defined benefit,
noncontributory pension plan which provides retirement benefits for essentially
all employees.  The following sets forth the plan's funded status and amounts
recognized in the financial statements:


<TABLE>
<CAPTION>
                                                                   1997             1996
                                                                   ----             ----
<S>                                                            <C>             <C>
                                                                      (In thousands)
Present values using actuarial assumptions
   Accumulated benefit obligation
      Vested                                                      $ 1,796           $ 1,626
      Non vested                                                        1                 1
                                                                 --------           -------
         Total                                                    $ 1,797           $ 1,627
                                                                 ========           =======
Projected benefit obligation                                      $(2,658)          $(2,453)
Plan assets at fair value                                           2,940             2,489
                                                                 --------           -------
      Funded status                                                   282                36
Unrecognized transition obligation                                   (125)             (136)
Unrecognized prior service cost                                       (43)              (46)
Unrecognized net loss                                                  96               288
                                                                 --------           -------
      Net pension asset                                           $   210           $   142
                                                                 ========           =======

</TABLE>

NOTE 7 - EMPLOYEE BENEFITS (Continued)

Net pension expense and related year end assumptions consist of the following:

<TABLE>
<CAPTION>
                                                                  1997            1996              1995
                                                                  ----            ----              ----
                                                                              (In thousands)
  <S>                                                         <C>              <C>              <C>
   Service cost                                                  $ 109           $   106          $   100
   Interest cost on benefit obligation                             197               184              173
   Actual return on plan assets                                   (203)             (191)            (158)
   Net amortization and deferral                                    (3)               (4)               -
                                                                 -----           -------          -------
                                                                                   
      Pension expense                                            $ 100           $    95          $   115
                                                                 =====           =======          =======
                                                                                   
   Weighted average discount rate                                 8.00%             8.00%            8.00%
   Rate of increase in future compensation                        5.00%             5.00%            5.00%
   Expected long term return on plan assets                       8.00%             8.00%            8.00%
</TABLE>


Plan assets are administered by Empire National Bank as trustee of the plan.
Plan assets are invested in diversified mutual funds operated and administered
by the Frank Russell Investment Company.

                                      15
<PAGE>   13

                      CNB CORPORATION 1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE 7 - EMPLOYEE BENEFITS (CONTINUED)

DEFERRED COMPENSATION PLAN:  The Company has adopted a deferred compensation
plan to provide retirement benefits to the directors, at their option, in lieu
of annual directors' fees.  The present value of future benefits are accrued
annually over the period of active service of each participant.  The expense
for the plan was $152,000, $145,000 and $151,000 in 1997, 1996, and 1995,
respectively.

The Company has also purchased insurance on the lives of participating
directors with the Company as the owner and beneficiary of the policies.

401(K) PLAN:  The Company has a 401(k) savings and retirement plan covering
substantially all employees.  Under the plan, employees may defer up to the
lesser of 20% of their eligible compensation or the limitations set by the IRS.
During 1997, 1996 and 1995, the Board of Directors elected to contribute a
matching contribution equal to 100% of the first 2% and 50% of the next 2% of
the employee's deferred compensation.  Employee contributions and the Company's
matching percentages are vested immediately.  The Company's matching
percentages are determined annually by the Board of Directors and resulted in
total contributions of $54,000, $56,000 and $54,000 in 1997, 1996 and 1995,
respectively.

NOTE 8 - STOCK OPTIONS

STOCK OPTION PLAN:  The shareholders approved an incentive stock option plan in
May 1996 under which options may be issued at market prices to employees.  The
right to exercise the options vests over a one year period.  No options were
exercisable at December 31, 1996.  The options outstanding and exercisable at
year end December 31, 1997 are as follows:


<TABLE>
<CAPTION>
                                                          Number
                                                        of Options
                                           Price      Exercisable and
          Issue Date  Expiration Date  Per Share (1)  Outstanding (1)
          ----------  ---------------  -------------  ---------------
          <S>         <C>              <C>            <C>

           May 1996    May 2006          $  29.03       12,679
</TABLE>


Pro forma disclosures are required for companies that do not adopt the fair
value accounting method for stock-based employee compensation.  Proforma
compensation is not material for 1997 or 1996.  The proforma effect is expected
to increase in future years as additional options are granted.  The exercise
price of options granted is equivalent to the market value of underlying stock
at the grant date.  Accordingly, no compensation cost was actually recognized
for stock options in 1997 or 1996.  There was no compensation cost in 1995, as
the plan was not approved until 1996.

The following is a summary of the option transactions for the period January 1,
1996 through December 31, 1997:


<TABLE>
<CAPTION>
                                                                   Weighted-
                                                                    Average
                                           Available    Options    Exercise
                                           For Grant  Outstanding    Price
                                           ---------  -----------  ---------
    <S>                                    <C>        <C>          <C>

    Balance at January 1, 1996                     -            -  $       -
       Options authorized                     50,000            -          -
       Options issued                        (12,500)      12,500      32.00
                                           ---------  -----------  ---------
    Balance at December 31, 1996              37,500       12,500      32.00
       Effect of 5% stock
        dividend                               1,875          625          -
       Options exercised                           -       (1,050)     30.48
                                           ---------  -----------  ---------
    Balance at December 31, 1997              39,375       12,075      30.48
       Effect of subsequent 5%
        stock dividend                         1,968          599          -
                                           ---------  -----------  ---------
    Restated balance at December 31, 1997     41,343       12,674  $   29.03
                                           =========  ===========  =========
</TABLE>


(1)  Restated for stock dividends, including the five percent stock dividend
     to be paid February 20, 1998.

                                      16
<PAGE>   14


                    CNB CORPORATION 1997 ANNUAL REPORT

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE 9 - INCOME TAXES


<TABLE>
<CAPTION>
Income tax expense consists of:
                                                           1997        1996      1995
                                                           ----        ----      ----  
                                                                  (In thousands)
<S>                                                       <C>     <C>             <C>
        Current                                           $1,204     $1,166    $1,017
        Deferred                                              67       (44)        42
                                                          ------     ------   -------
                                                          $1,271     $1,122    $1,059
                                                          ======     =======   ======
</TABLE>

Year end deferred tax assets and liabilities consist of:

<TABLE>
<CAPTION>
                                                               1997     1996
                                                               ----     ----   
                                                              (In thousands)
<S>                                                           <C>     <C> 
        Deferred tax assets                         
            Allowance for loan losses                          $343     $315
            Unrealized losses on securities         
             available for sale                                   -        1
            Deferred compensation                               368      344
            Other                                                40       96
                                                               ----     ----
                                                    
                Total deferred tax assets                       751      756
                                                               ----     ----
                                                    
        Deferred tax liabilities                    
            Pension                                              45       22
            Unrealized gains on securities          
             available for sale                                  27        -
            Fixed assets                                         43       35
            Mortgage servicing rights                            16        -
            Accretion                                            69       53
                                                               ----     ----
                Total deferred tax liabilities                  200      110
                                                               ----     ----
                                                    
                    Net deferred tax asset                     $551     $646
                                                               ====     ====
</TABLE>


Income tax expense calculated at  the statutory rate of 34% differs from actual
income tax expense as follows:

<TABLE>
<CAPTION>
                                                     1997        1996     1995
                                                     ----        ----     ---- 
                                                            (In thousands)
 <S>                                                <C>     <C>         <C>
 Statutory rate applied to income before taxes      $1,411     $1,266    $1,164
 Deduct                                                
    Tax-exempt interest income                        (133)      (139)     (102)
    Other                                               (7)        (5)       (3)
                                                    ------     ------    ------
                                                       
                                                    $1,271     $1,122    $1,059
                                                    ======     ======    ======
</TABLE>



NOTE 10 - EARNINGS PER SHARE

A reconciliation of the numerators and denominators of the basic earnings per
share and diluted earnings per share computations is presented below:


<TABLE>
<CAPTION>
                                                      1997       1996       1995
                                                    ---------  ---------  ---------
<S>                                                 <C>        <C>        <C>
Basic earnings per share
     Net income available to common
        shareholders (in thousands)                 $   2,880  $   2,601  $   2,365
                                                    =========  =========  =========
     Weighted average shares outstanding,
        adjusted for subsequent five percent stock
        dividend to be paid February 20, 1998       1,026,124  1,026,174  1,026,174
                                                    =========  =========  =========

        Basic earnings per share                    $    2.81  $    2.53  $    2.31
                                                    =========  =========  =========
Diluted earnings per share
     Net income available to common
        shareholders (in thousands)                 $   2,880  $   2,601  $   2,365
                                                    =========  =========  =========
     Weighted average shares outstanding,
        adjusted for subsequent five percent stock
        dividend to be paid February 20, 1998.      1,026,124  1,026,174  1,026,174

     Add dilutive effects of assumed exercises
        of stock options                                2,267          -          -
                                                    ---------  ---------  ---------
         Weighted average dilutive
        potential shares outstanding                1,028,391  1,026,174  1,026,174
                                                    =========  =========  =========

        Diluted earnings per share                  $    2.80  $    2.53  $    2.31
                                                    =========  =========  =========
</TABLE>

                                      17
<PAGE>   15

                    CNB CORPORATION 1997 ANNUAL REPORT



                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS




NOTE 11 - RELATED PARTY TRANSACTIONS

Certain directors and executive officers of the Corporation and the Bank
(including family members, affiliates and companies in which they are principal
owners) had loans outstanding with the Bank in the ordinary course of business.
A summary of the aggregate loans outstanding which exceeded $60,000 to these
individuals follows:


<TABLE>
<CAPTION>
                                                  1997     1996
                                                 -------  -------
               <S>                               <C>      <C>
                                                 (In thousands)

               Balance outstanding, January 1     $1,377     $980
               New loans and rewrites              7,664    8,163
               Payments and payoffs               (7,158)  (7,676)
               Other                                   -      (90)
                                                 -------  -------

               Balance outstanding, December 31   $1,883   $1,377
                                                 =======  =======
</TABLE>


Related party deposits totaled $1,352,000 and $933,000 at year end 1997 and
1996, respectively.


NOTE 12 - COMMITMENTS, OFF-BALANCE-SHEET RISK, AND CONTINGENCIES

There are various contingent liabilities that are not reflected in the
financial statements, including claims and legal actions arising in the
ordinary course of business.  In the opinion of management, after consultation
with legal counsel, the ultimate disposition of these matters is not expected
to have a material effect on financial condition or result of operations.

At year end 1997 and 1996, reserves of $1,065,000 and $1,060,000 were required
as deposits with the Federal Reserve or as cash on hand.  These reserves do not
earn interest.

Some financial instruments are used in the normal course of business to meet
the financing needs of customers and to reduce exposure to interest rate
changes.  These financial instruments include commitments to extend credit and
standby letters of credit.  These involve, to a varying degree, credit and
interest-rate risk in excess of the amount reported in the financial
statements.

Exposure to credit loss if the other party does not perform is represented by
the contractual amount for commitments to extend credit and standby letters of
credit.  The same credit policies are used for commitments and conditional
obligations as are used for loans.

Commitments to extend credit are agreements to lend to a customer as long as
there is no violation of any condition established in the commitment.
Commitments generally have fixed expiration dates or other termination clauses
and may require payment of a fee.  Since many of the commitments are expected
to expire without being used, the total commitments do not  necessarily
represent future cash requirements.  Standby letters of credit are conditional
commitments to guarantee a customer's performance to a third party.

A summary of the notional or contractual amounts of financial instruments with
off-balance-sheet risk at year end follows:

<TABLE>
<CAPTION>
                                                  1997       1996
                                                  ----       ----
                                                   (In thousands)
                 <S>                             <C>        <C>
                 Commitments to extend credit    $14,045    $14,736
                 Standby letters of credit            30         29
</TABLE>



Substantially all of these commitments are at variable or uncommitted rates.


NOTE 13 - FAIR VALUES OF FINANCIAL INSTRUMENTS

The following methods and assumptions were used to estimate fair values for
financial instruments.  The carrying amount is considered to estimate fair
value for cash and variable rate loans or deposits that reprice frequently and
fully.  Securities fair values are based on quoted market prices or, if no
quotes are available, on the rate and term of the security and on information
about the issuer.  For fixed rate loans or deposits and for variable rate loans
or deposits with infrequent repricing or repricing limits, the fair value is
estimated by discounted cash flow analysis or underlying collateral values,
where applicable.  The fair value of off-balance-sheet items approximates cost
and is not considered significant to this presentation.


                                      18
<PAGE>   16
                      CNB CORPORATION 1997 ANNUAL REPORT


                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



The estimated year end values of financial instruments were:


<TABLE>
<CAPTION>
                                            1 9 9 7            1 9 9 6
                                       -----------------  -----------------
                                       Carrying   Fair    Carrying   Fair
                                        Amount    Value    Amount    Value
                                       --------  -------  --------  -------
                                                 (In thousands)
    <S>                                <C>       <C>      <C>      <C>
    Assets
        Cash and cash equivalents      $ 19,304 $ 19,304  $ 10,104 $ 10,104
        Interest-earning deposits         1,000    1,000         -        -
        Securities available for sale    19,162   19,162     7,985    7,985
        Securities held to maturity      42,483   42,718    53,085   53,416
        Other securities                    716      716       180      180
        Loans, net                      101,797  101,883    95,380   95,541

    Liabilities
        Deposits
            Non-interest bearing       $ 23,769 $ 23,769  $ 22,419 $ 22,419
            Interest-bearing            146,557  146,540   131,449  131,631
</TABLE>

NOTE 14 - REGULATORY CAPITAL

The Company and Bank are subject to regulatory capital requirements
administered by federal banking agencies.  Capital adequacy guidelines and
prompt corrective action regulations involve quantitative measures of assets,
liabilities, and certain off-balance-sheet items calculated under regulatory
accounting practices.  Capital amounts and classifications are also subject to
qualitative judgments by regulators about components, risk weightings and other
factors, and the regulators can lower classifications in certain cases.
Failure to meet various capital requirements can initiate regulatory action
that could have a direct material effect on the financial statements.

The prompt corrective action regulations provide five classifications,
including well capitalized, adequately capitalized, undercapitalized,
significantly undercapitalized, and critically undercapitalized, although these
terms are not used to represent overall financial condition.  If adequately
capitalized, regulatory approval is required to accept brokered deposits.  If
undercapitalized, capital distributions are limited, as is asset growth and
expansion, and plans for capital restoration are required.  The minimum
requirements are:


<TABLE>
<CAPTION>
                                   Capital to Risk-                               
                                   Weighted Assets            Tier 1 Capital      
                                        Total        Tier 1  To Average Assets    
                                   ----------------  ------  -----------------    
      <S>                              <C>           <C>         <C>                  
                                                                                  
      Well capitalized                  10%           6%           5%                   
      Adequately capitalized             8%           4%           4%                   
      Undercapitalized                   6%           3%           3%                   
</TABLE>


                                      19

<PAGE>   17


                      CNB CORPORATION 1997 ANNUAL REPORT




                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


NOTE 14 - REGULATORY CAPITAL (CONTINUED)


The Company and Bank were categorized as well capitalized at year end.  Actual
capital levels (in millions) and minimum required levels were:

<TABLE>
<CAPTION>
                                                                                            Minimum Required
                                                                                               To Be Well
                                                                  Minimum Required         Capitalized Under
                                                                    For Capital            Prompt Corrective
                                               Actual            Adequacy Purposes         Action Regulations
                                               ------           --------------------     ---------------------
                                           Amount    Ratio         Amount     Ratio         Amount      Ratio
                                          -------   -------     ---------  ---------     ----------  ---------
<S>                                       <C>     <C>           <C>        <C>         <C>         <C>
1997
Total capital (to risk weighted assets)
  Consolidated                             $19.4   19.2%         $8.1       8.0%          $10.1      10.0%
  Bank                                      19.3   19.2%          8.1       8.0%           10.1      10.0%
Tier 1 capital (to risk weighted assets)                                                
  Consolidated                              18.1   17.9%          4.0       4.0%            6.1       6.0%
  Bank                                      18.1   17.9%          4.0       4.0%            6.1       6.0%
Tier 1 capital (to average assets)
  Consolidated                              18.1    9.6%          7.6       4.0%            9.4       5.0%
  Bank                                      18.1    9.6%          7.6       4.0%            9.4       5.0%

1996
Total capital (to risk weighted assets)
  Consolidated                             $18.2   19.6%         $7.4       8.0%           $9.3      10.0%
  Bank                                      18.2   19.6%          7.4       8.0%            9.3      10.0%
Tier 1 capital (to risk weighted assets)                                                
  Consolidated                              17.1   18.3%          3.7       4.0%            5.6       6.0%
  Bank                                      17.1   18.3%          3.7       4.0%            5.6       6.0%
Tier 1 capital (to average assets)                                                         
  Consolidated                              17.1    9.9%          6.9       4.0%            8.6       5.0%
  Bank                                      17.1    9.9%          6.9       4.0%            8.6       5.0%
</TABLE>


                                      20
<PAGE>   18

                      CNB CORPORATION 1997 ANNUAL REPORT



                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


NOTE 15 - PARENT COMPANY CONDENSED FINANCIAL STATEMENTS

Following are condensed parent company financial statements:

                            CONDENSED BALANCE SHEETS
                           DECEMBER 31, 1997 AND 1996


<TABLE>
<CAPTION>
                                                     1997     1996
                                                    -------  -------
                                                     (In thousands)
             <S>                                   <C>      <C>
             ASSETS
             Cash                                  $     1  $    11
             Investment in subsidiary               18,138   17,047
             Other assets                              837      798
                                                   -------  -------

                                                   $18,976  $17,856
                                                   =======  =======

             LIABILITIES AND SHAREHOLDERS' EQUITY
             Dividends payable                     $   831  $   791
             Other liabilities                           -       12
             Shareholders' equity                   18,145   17,053
                                                   -------  -------

                                                   $18,976  $17,856
                                                   =======  =======
</TABLE>



                         CONDENSED STATEMENTS OF INCOME
                  YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                    1997     1996     1995
                                                   -------  -------  ------
     <S>                                           <C>      <C>      <C>
                                                   (In thousands)

     Dividends from subsidiary                     $ 1,875  $ 1,764  $1,590
     Operating expenses                                 45       35      19
                                                   -------  -------  ------

     Income before income tax and equity
      in undistributed income of subsidiary          1,830    1,729   1,571

     Income tax benefit                                 15       12       7

     Equity in undistributed income of subsidiary    1,035      860     787
                                                   -------  -------  ------

     NET INCOME                                    $ 2,880  $ 2,601  $2,365
                                                   =======  =======  ======
</TABLE>


                                      21
<PAGE>   19

                      CNB CORPORATION 1997 ANNUAL REPORT


                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



NOTE 15 - PARENT COMPANY CONDENSED FINANCIAL STATEMENTS (Continued)

                       CONDENSED STATEMENTS OF CASH FLOWS
                  YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                     1997     1996     1995
                                                    -------  -------  -------
  <S>                                               <C>      <C>      <C>
                                                          (In thousands)
  CASH FLOWS FROM OPERATING ACTIVITIES
  Net income                                        $ 2,880  $ 2,601  $ 2,365
  Equity in undistributed net income of subsidiary   (1,035)    (860)    (787)
  Change in other assets                                (40)     (30)    (300)
  Change in other liabilities                           (12)      13        2
                                                    -------  -------  -------
     Net cash from operating activities               1,793    1,724    1,280

  CASH FLOWS FROM FINANCING ACTIVITIES
  Dividends                                          (1,808)  (1,722)  (1,282)
  Net shares issued                                      (5)       -        -
                                                    -------  -------  -------
     Net cash from financing activities              (1,803)  (1,722)  (1,282)
                                                    -------  -------  -------

  Net change in cash and cash equivalents               (10)       2       (2)

  Cash at beginning of year                              11        9       11
                                                    -------  -------  -------

  CASH AT END OF YEAR                               $     1  $    11  $     9
                                                    =======  =======  =======
</TABLE>



The Company's primary source of funds to pay dividends to shareholders is the
dividends it receives from the Bank.  The Bank is subject to certain
restrictions on the amount of dividends that it may declare without prior
regulatory approval.  At December 31, 1997, $4,557,000 of retained earnings
were available for dividend declaration without prior regulatory approval.



                                      22
<PAGE>   20

                      CNB CORPORATION 1997 ANNUAL REPORT








                          INDEPENDENT AUDITOR'S REPORT



                             [CROWNE CHIZEK LOGO]


Board of Directors and Shareholders
CNB Corporation
Cheboygan, Michigan


We have audited the accompanying consolidated balance sheets of CNB Corporation
as of December 31, 1997 and 1996, and the related consolidated statements of
income, changes in shareholders' equity and cash flows for each of the three
years in the period ended December 31, 1997.  These financial statements are
the responsibility of the Corporation's management.  Our responsibility is to
express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free
from material misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.
An audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation.  We believe that our audits provide a reasonable basis
for our opinion.

In our opinion, the consolidated financial statements referred to above present
fairly, in all material respects, the financial position of CNB Corporation as
of December 31, 1997 and 1996, and the results of its operations and its cash
flows for each of the three years in the period ended December 31, 1997, in
conformity with generally accepted accounting principles.




                                             /s/ CROWNE, CHIZEK AND COMPANY LLP
                                             Crowe, Chizek and Company LLP

Grand Rapids, Michigan
February 4, 1998



                                      23
<PAGE>   21

                    CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS

This discussion provides information about the consolidated financial condition
and results of operations of CNB Corporation (the Company) and its subsidiary,
Citizens National Bank of Cheboygan (the Bank).  This discussion should be read
in conjunction with the financial statements beginning on Page 7 and the
related footnotes.

                              FINANCIAL CONDITION

CASH AND CASH EQUIVALENTS

The balance maintained in cash and cash equivalents varies based on daily
fluctuations in loan and deposit balances.  Sufficient cash is maintained on a
daily basis to meet the anticipated liquidity needs of the Company for customer
transactions and to clear checks drawn on other financial institutions.  This
amount of clearings can vary by as much as $3 million in one day, causing the
Company's cash position to vary.

SECURITIES

Investment balances increased $1 million during 1997.  Securities available for
sale represent 31.1% of the portfolio.  Currently, the Company primarily
maintains a short-term securities portfolio.  Therefore, not many securities
are needed in the available for sale classification to meet anticipated
liquidity needs.  The average life of the investment portfolio is being
extended as securities of a longer maturity are added to the portfolio when
appropriate.  As the amount of securities maturing on a regular monthly basis
decreases, liquidity will be maintained by adding to the available for sale
portfolio.

The chart below shows the change in each of the categories of the portfolio.


<TABLE>
<CAPTION>
                                                   1997     1996      1995    
                                                 --------  -------  --------  
                                                       (In thousands)     
       <S>                                       <C>       <C>      <C>       
       U.S. Government and agency securities     $ (5,353) $ 4,168    $ (3,748)  
       Tax exempt state and municipal               1,108     (219)      3,766  
       Taxable state and municipal                  4,820   (1,530)      3,265  
                                                 --------  -------    --------  
                                                                              
          Total change in securities             $    575  $ 2,419    $  3,283  
                                                 ========  =======    ========  
</TABLE>



Holdings in state and municipal securities increased during the year primarily
as a result of increases in funds available through the growth of the deposit
portfolio.  The chart below shows the percentage composition of the portfolio
as of December 31.


<TABLE>
<CAPTION>
                                                    1997     1996
                                                   -------  -------
            <S>                                    <C>      <C>

            U.S. Government and agency securities    72.42%   81.63%
            Tax exempt state and municipal           15.23    13.70
            Taxable state and municipal              12.35     4.67
                                                   -------  -------

                                                    100.00%  100.00%
                                                   =======  =======
</TABLE>


Securities available for sale are recorded at fair value, and securities held
to maturity are recorded at amortized cost.  The net unrealized gain on
securities available for sale at December 31, 1997 was $53,000, net of taxes.
The unrealized gains and losses are temporary, since they are a result of
market changes rather than a reflection of credit quality.  Management has no
specific intent to sell these securities at the present time.

The Company maintains a conservative investment portfolio with a majority of
the investments in U.S. Government and agency securities and issues of
governmental units in our service area.  The maturities of the U.S. Government
and agency securities have typically been very short, two years or less,
providing liquidity in addition to quality.  During 1997, management felt that
there was sufficient liquidity to increase the maturity of the investment
portfolio, thereby increasing the potential yield.  These plans are expected to
continue through 1998.


                                      24
<PAGE>   22
                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS


                     
LOANS

Total loans increased $6.5 million, or 6.7% during 1997.  The largest percent
growth for 1997 came in the commercial lending area.  As a full service lender,
the Company offers a variety of personal and commercial loans.  Home mortgages
comprise the largest portion of the loan portfolio.  The Company generally
retains the ownership of adjustable rate loans and short to medium term
fixed-rate loans, and originates and sells long term single family residential
fixed-rate mortgage loans to the secondary market.  The Company originated $7.7
million in loans for sale in 1997 and $3.7 million in 1996.  This practice
allows the Company to meet the housing credit needs of its service area while
maintaining an appropriate interest rate sensitivity and liquidity position.
In addition to mortgage loans, the Company makes loans for personal and
business use, secured and unsecured, to customers in its service area.

ALLOWANCE FOR LOAN LOSSES

The allowance for loan losses represents that amount which management estimates
is adequate to provide for losses inherent in the loan portfolio.  Management
determines the adequacy of the allowance for loan losses by reviewing selected
loans (including large loans, non-accrual loans and problem and delinquent
loans) and establishes specific loss allowance on these loans.  Historical loss
information and local economic conditions are considered in establishing
allowances on the remaining loan portfolio.  The allowance is increased by
provisions charged to expense and reduced by loan losses, net of recoveries.

The quality of the Company's loan portfolio compares well with its peer group
with non-performing loans at 0.10% of total loans at December 31, 1997 and
0.14% at December 31, 1996.  Loans charged off were 0.04% of total loans during
1997 and 0.07% in 1996.  The allowance for loan losses increased in 1997 and
1996 to an amount considered adequate by management to cover possible losses
that are currently anticipated based on past experience and specific
identification.

CREDIT QUALITY

The Company continues to maintain a high level of asset quality as a result of
actively managing delinquencies, nonperforming assets and potential problem
loans.  The Company performs an ongoing review of all large credits to watch
for any deterioration in quality.  Nonperforming loans are comprised of: (1)
loans accounted for on a nonaccrual basis; (2) loans contractually past due 90
days or more as to interest or principal payments (but not included in the
nonaccrual loans in (1) above); and (3) other loans whose terms have been
renegotiated to provide a reduction or deferral of interest or principal
because of a deterioration in the financial position of the borrower (exclusive
of loans in (1) or (2) above).  The aggregate amount of nonperforming loans is
shown in the table below.


<TABLE>
<CAPTION>
                                                  December 31,
                                                 1997     1996
                                                -------  -------
                <S>                             <C>      <C>
                                                (In thousands)

                Nonaccrual loans                $    21  $    70
                Loans past due 90 days or more       78       61
                Troubled debt restructurings          -        -
                                                -------  -------

                   Total nonperforming loans    $    99  $   131
                                                =======  =======

                Percent of total loans              .10%     .14%
                                                =======  =======
</TABLE>

                                      25

<PAGE>   23

                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS

DEPOSITS

The Company's service area has experienced steady economic growth.  The Company
offers competitive deposit products and has, therefore, shown steady deposit
growth as it increases its market share.  Deposits increased $16.5 million or
10.7% during 1997.  Time deposits accounted for $10.4 million of this increase.
The Company considers a $16.5 million growth in deposits to be noteworthy
considering the number of individuals who have moved their funds from financial
institutions into the equities markets to seek higher rates of return.

The majority of the Company's deposits are derived from core customers,
relating to long term relationships with local personal, business and public
customers.  Deposit rates are monitored continually to assure that the Company
pays a competitive rate.  The Company does not support its growth through
purchased or brokered deposits.

                         LIQUIDITY AND FUNDS MANAGEMENT

Consistent with 1996, as detailed in the Consolidated Statements of Cash Flows,
the Company continued to build its balance sheet in 1997 with cash flows
obtained from operations and increases in deposits.  Net income combined with
net cash from operating activities provided approximately $3.5 million in
liquidity.  This liquidity combined with increases in deposits of $16.5
million, offset by dividends paid to shareholders, allowed for loan growth of
$6.5 million.  Excess funds were invested in federal funds which allowed the
Company to obtain a higher yield without impairing liquidity.  The Company
serves a market which is highly tied to the tourist industry.  Consequently,
the Company experiences seasonal swings in liquidity.  Deposits growth occurs
during July, August and September, then may decline through the fall and winter
months.  As a result, the Company is usually very liquid from June to
September.  Investment security maturities are distributed evenly from October
to May to meet the Company's liquidity needs during these months.  The Company
does not anticipate any significant changes in its seasonal pattern.


                                      26

<PAGE>   24

                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS



FUNDS MANAGEMENT

The following chart shows the Company's interest rate sensitivity as of
December 31, 1997:


<TABLE>
<CAPTION>
                                          Repricing or Maturing Within
                                                 (In Thousands)
                           Up to          4 to 12     1 to 5    Over
                           3 Months       Months      Years     5 Years    Total
                           --------       -------     ------    -------    --------
<S>                        <C>          <C>           <C>      <C>        <C>  
Federal funds sold          $13,300       $     -     $     -    $     -    $ 13,300
Interest-earning deposits         -         1,000           -          -       1,000
Taxable investment                                     
 securities                   9,422        14,483      28,240          -      52,145
Non-taxable investment                                 
 securities                     203         2,915       4,201      2,181       9,500
Loans                        29,338        30,631      32,848     10,550     103,367
                           --------       -------     -------    -------    --------
   Total rate sensitive                                
    assets                   52,263        49,029      65,289     12,731    $179,312
                           --------       -------     -------    -------    ========
                                                       
Interest-bearing demand                                
 deposits                     1,506         4,065       9,480          -      15,051
Savings                       5,733         5,158      12,036          -      22,927
Money market savings         19,095         6,459      15,066          -      40,620
Time deposits                20,084        26,004      21,871          -      67,959
                           --------       -------     -------    -------    --------
   Total rate sensitive                                
    liabilities              46,418        41,686      58,453          -    $146,557
                           --------       -------     -------    -------    ========
                                                       
Gap                           5,845         7,343       6,836     12,731  
                           --------       -------     -------    -------  
                                                       
Cumulative gap              $ 5,845       $13,188     $20,024    $32,755  
                           ========       =======     =======    =======  

Cumulative ratio             112.59%       117.62%
                           ========       =======
</TABLE>



Management reviews the rate and term of any callable securities in the
portfolio.  The probability of call is used as the basis for determining a
repricing date.  Management believes that the difference between rate sensitive
assets and rate sensitive liabilities ("Gap") overstates true interest
sensitivity.  Interest exposure is not as significant as expressed in the above
schedule.  Even though the Company has the contractual right to make a change
in certain deposit rates, given its competitive position, management believes
that liabilities do not need to be repriced as soon as rates begin to move.
During 1997, the Company originated and retained $8.3 million in 15 year fixed
rate mortgages.  This has provided better utilization of its available funds
and will contribute to increased interest income in the future.

CAPITAL RESOURCES

The capital ratios of the Company exceed the regulatory guidelines for well
capitalized institutions.  The Company has maintained an average leverage ratio
of 9.7% for the last three years.  This strong capital position provides the
Company with the flexibility to leverage its capital so as to be able to take
advantage of expansion opportunities.  The Company's strong capital position
also provides the flexibility to continue with a high dividend payout ratio
which has averaged 66.0% over the past three years.  Earnings are projected to
continue at current levels or better which will allow the Company to continue
to pay out dividends at this level.  Dividends represent a yield of
approximately 5.1% in 1997 and 6.2% in 1996.  A five percent stock dividend was 

                                      27

<PAGE>   25

                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS




distributed to shareholders in 1997 and a five percent stock dividend was
declared on January 18, 1998 and is payable on February 20, 1998.  The stock of
the Company is generally traded locally. Additional information concerning
capital ratios and shareholder return is included in the Financial Highlights
schedule.  The Company maintains a five year plan and utilizes a formal
strategic planning process.  Management and the Board continue to monitor long
term goals, which include increasing market share and maintaining long term
earnings sufficient to pay consistent dividends.

                             RESULTS OF OPERATIONS

NET INTEREST INCOME

In 1997, net interest income increased $382,000 or 5.3%, due to increase in
average earning assets of $9.5 million.  The yield on interest-earning assets
was 8.02% compared to 8.01% for 1996 while the cost of interest-bearing
deposits increased to 4.35% from 4.32% in 1996.  The net interest margin (net
interest income as a percentage of average earning assets) decreased to 4.46%
from 4.49% due to an increase in the cost of interest-bearing deposits.

In 1996, net interest spread (the difference between the average yield on
earning assets and the average cost of interest-bearing deposits) was down but
volumes were up.  As a result, the Company experienced an increase of $298,000
in net interest income.  The yield on interest-earning assets for 1996
decreased 2 basis points to 8.01% while the cost of interest-bearing deposits
increased 14 basis points to 4.32%. The following table shows the daily
average Consolidated Balance Sheet, revenue on earning assets (on a pre-tax
basis), expense on interest bearing liabilities, and the annualized effective
rate or yield for the periods ending:

         Yield Analysis of Consolidated Average Assets and Liabilities
                                 (In thousands)

<TABLE>
<CAPTION>
                               YEAR ENDED                  YEAR ENDED                  YEAR ENDED
                           DECEMBER 31, 1997            DECEMBER 31, 1996           DECEMBER 31, 1995
                      ----------------------------  --------------------------  -------------------------
                        Average             Yield/   Average           Yield/    Average           Yield/
                        Balance      Int     Rate    Balance    Int     Rate     Balance    Int     Rate
                      ------------  ------  ------  ---------  ------  -------  ---------  ------  ------
<S>                   <C>           <C>     <C>     <C>        <C>     <C>      <C>        <C>     <C>
Interest earning assets:
 Interest-earning
  deposits               $    460  $    27    5.87% $    249  $    16    6.43%  $    592   $   35    5.91%
 Federal funds sold         9,293      535    5.76     5,113      273    5.34      7,756      485    6.25
 Total securities          59,950    3,558    5.93    63,144    3,735    5.92     55,712    3,093    5.55
 Loans                    101,518    9,608    9.46    93,193    8,934    9.59     86,158    8,456    9.81
                         --------  -------  ------  --------  -------  -------  --------   ------  ------
   Total interest
    earning assets        171,221   13,728    8.02%  161,699   12,958    8.01%   150,218   12,069    8.03%
                                   -------  ------            -------  -------             ------  ------
Cash and due from
  banks                     5,819                      5,447                       5,198
Premises and
 equipment, net             2,590                      1,929                       1,984
Other assets                2,426                      2,656                       2,339
                         --------                   --------                    --------
   Total                 $182,056                   $171,731                    $159,739
                         ========                   ========                    ========
</TABLE>


                                      28

<PAGE>   26

                 Yield Analysis of Consolidated Average Assets and Liabilities

<TABLE>
<CAPTION>
                               YEAR ENDED                  YEAR ENDED                  YEAR ENDED
                           DECEMBER 31, 1997            DECEMBER 31, 1996           DECEMBER 31, 1995
                      ----------------------------  --------------------------  -------------------------
                        Average             Yield/   Average           Yield/    Average           Yield/
                        Balance      Int     Rate    Balance    Int     Rate     Balance    Int     Rate
                      ------------  ------  ------  ---------  ------  -------  ---------  ------  ------
<S>                   <C>           <C>     <C>     <C>        <C>     <C>      <C>        <C>     <C>
Interest-bearing
 liabilities:
 Interest-bearing
  demand deposits     $    13,943      333    2.39% $ 14,051      337    2.40%  $ 13,377      321    2.40%
 Savings deposits          63,189    2,377    3.76    59,473    2,178    3.66     56,153    2,043    3.64
 Time deposits             62,798    3,377    5.38    58,417    3,184    5.45     52,740    2,744    5.20
                      -----------   ------  ------  --------   ------  -------  --------   ------  ------
   Total interest
    bearing deposits      139,930    6,087    4.35%  131,941    5,699    4.32%   122,270    5,108    4.18%
                                    ------  ------             ------  -------             ------  ------
Non-interest bearing
 deposits                  22,484                     21,156                      19,859
Other liabilities           1,757                      1,667                       1,578
Shareholders' equity       17,885                     16,967                      16,032
                      -----------                   --------                    --------
   Total              $   182,056                   $171,731                    $159,739
                      ===========                   ========                    ========
Net interest income                 $7,641                     $7,259                      $6,961
                                    ======                     ======                      ======
Net interest spread                           3.67%                      3.69%                       3.85%
                                            ======                     ======                       =====
Net yield on
 interest earning
 assets                                       4.46%                      4.49%                       4.63%
                                            ======                     ======                       =====
Ratio of interest
 earning assets
 to interest bearing
 liabilities                                  1.22%                      1.23%                       1.23%
                                            ======                     ======                       =====
</TABLE>



The table below shows the effect of volume and rate changes on net interest
income on a pre-tax basis.


<TABLE>
<CAPTION>
                                            1997 Compared to 1996      1996 Compared to 1995
                                          -------------------------  -------------------------
                                          Volume    Rate      Net    Volume    Rate      Net
                                          -------  -------  -------  -------  -------  -------
                                                            (In thousands)
<S>                                       <C>      <C>      <C>      <C>      <C>      <C>
Interest-earning deposits                 $    12  $    (1) $    11  $   (22) $     3  $   (19)
Federal funds sold                            239       23      262     (148)     (64)    (212)
Total securities                             (190)      13     (177)     431      211      642
Loans, net                                    789     (115)     674      678     (200)     478
                                          -------  -------  -------  -------  -------  -------
 Total interest-earning assets                850      (80)     770      939      (50)     889
                                               
Interest-bearing demand deposits               (3)      (1)      (4)      16        -       16
Savings deposits                              139       60      199      122       13      135
Time deposits                                 236      (43)     193      305      135      440
                                          -------  -------  -------  -------  -------  -------
 Total interest-bearing deposits              372       16      388      443      148      591
                                          -------  -------  -------  -------  -------  -------

   Net change in net interest income (a)  $   478  $   (96) $   382  $   496  $  (198) $   298
                                          =======  =======  =======  =======  =======  =======
</TABLE>


(a)  The net change in interest due to both rate and volume has been allocated
     to volume and rate changes in proportion to the relationship of the
     absolute dollar amounts of the change in each.




                                      29
<PAGE>   27


                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS


LOANS

As of December 31, 1997 loans increased 6.7% in 1997 to $103.4 million compared
to $96.9 million at year end 1996.  Substantial growth occurred in our
commercial lending which grew to $11.7 million in 1997 from $9.6 million in
1996, or a 21.9% increase.  The largest component of our loan portfolio is
residential real estate which grew to $60.8 million up from $56.7 million in
1996 or 7.2%.  The Company generally retains the ownership of adjustable rate
loans and short to medium term fixed rate loans, and originates and sells long
term single family residential fixed rate mortgages to the secondary market.
All loans are domestic.  An annual review of loan concentrations at December
31, 1997 indicates that the pattern of loans in the portfolio has not changed.
There is no individual industry with more than a 10% concentration, however,
all tourism related businesses, when combined, total 12.0% of total loans.

The Company did not borrow funds during 1997.

DEPOSITS

Total deposits grew 10.7% to $170.3 million compared to $153.9 million for
1996.  The largest increase was in interest-bearing deposits which grew 11.5%
to $146.6 million in 1997 compared to $131.5 million in 1996.

As of December 31, 1997 the loan to deposit ratio was 60.7% compared to 63.0%
at December 31, 1996.  Management continues to emphasize loan growth and would
like to see this ratio at a minimum of 65%.  This change in the asset mix from
securities to higher yielding loans will increase the net interest margin.

CASH AND CASH EQUIVALENTS

Cash and cash equivalents increased to $19.3 million from $10.1 million in
1996.  Cash from operating activities and financing activities provided $18.1
million which was offset by a decrease from investing activities of $8.9
million.

EQUITY

Total equity for the Company at year end 1997 was $18.1 million compared to
$17.1 million in 1996.  The Company had $2.9 million in income and paid out
$1.8 million in dividends during 1997.  The unrealized gain on securities
available for sale increased equity $55,000.

OTHER INCOME

Non-interest income continues to improve, increasing $263,000 or 25.3% in 1997.
Service charge and fee income increased $105,000 or 14.8% and other income
increased $81,000 or 43.3%.

In 1996, non-interest income increased $2,000 or .2% compared to 1995.  Other
income increased $36,000 or 23.8% while loan sales and servicing fees decreased
$42,000 or 23.1%.

OTHER EXPENSE

Non-interest expense increased $217,000 or 4.9% in 1997.  Salary and benefits
increased $142,000 or 5.5%, while net occupancy expense of bank premises
increased $31,000 or 5.3% compared to 1996.

In 1996, non-interest expense increased $1,000 compared to 1995.  A change in
the FDIC assessment rates reduced the expense by $155,000 from $157,000 in 1995
to $2,000 in 1996, while salaries and benefits increased $56,000 or 2.2%.

FEDERAL INCOME TAXES

Income tax expense increased 13.3% to $1.3 million in 1997.  This was primarily
due to an increase in pre-tax income.  The Company's effective tax rate
increased to 30.6% in 1997 from 30.1% in 1996.  There was no significant change
in the Company's income tax position from 1996 to 1997.
The effective tax rates for 1997, 1996 and 1995 are shown in the table below:

                                      30

<PAGE>   28

                      CNB CORPORATION 1997 ANNUAL REPORT



                     MANAGEMENT'S DISCUSSION AND ANALYSIS





<TABLE>
<CAPTION>
                                                              1997     1996     1995       
                                                             -------  -------  -------     
          <S>                                                <C>      <C>      <C>         
          Income before tax (In thousands)                   $4,151   $3,723   $3,424      
          Income tax expense (In thousands)                   1,271    1,122    1,059      
          Effective tax rate                                   30.6%    30.1%    30.9%     
</TABLE>


NET INCOME

Consolidated net income was $2,880,000 for 1997, compared to $2,601,000 for
1996.  Return on consolidated average assets for 1997 was 1.58%, compared to
1.51% in 1996.  Return on average shareholders' equity was 16.10% in 1997
compared to 15.33% in 1996.  Basic earnings per share for 1997, 1996, and 1995
were $2.81, $2.53 and $2.31.  Improved net interest income, combined with
improved other income have contributed to this increase.


                                      31


<PAGE>   1







Exhibit 21.)Subsidiary of the Company:

Citizens National Bank of Cheboygan is the sole subsidiary of the Company.









                                   Page 13






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