<PAGE>   1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 21, 1999
 
                                                      REGISTRATION NO. 333-
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                         SUN COMMUNITY BANCORP LIMITED
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                             <C>                             <C>
            ARIZONA                          6022                         86-0878747
   (STATE OF INCORPORATION)      (PRIMARY STANDARD INDUSTRIAL          (I.R.S. EMPLOYER
                                  CLASSIFICATION CODE NUMBER)         IDENTIFICATION NO.)
</TABLE>
 
                      2777 EAST CAMELBACK ROAD, SUITE 101
                             PHOENIX, ARIZONA 85016
                                 (602) 955-6100
    (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                  OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                              CRISTIN REID ENGLISH
                       VICE PRESIDENT AND GENERAL COUNSEL
                         SUN COMMUNITY BANCORP LIMITED
                      2777 EAST CAMELBACK ROAD, SUITE 101
                             PHOENIX, ARIZONA 85016
                                 (602) 955-6100
      (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING
                        AREA CODE, OF AGENT FOR SERVICE)
 
                                   COPIES TO:
 
<TABLE>
<S>                                            <C>
           TERRY MORRIS ROMAN, ESQ.                       JENNIFER R. EVANS, ESQ.
            SNELL & WILMER L.L.P.                    VEDDER, PRICE, KAUFMAN & KAMMHOLZ
              ONE ARIZONA CENTER                           222 N. LASALLE STREET
         PHOENIX, ARIZONA 85004-0001                    CHICAGO, ILLINOIS 60601-1003
                (602) 382-6000                                 (312) 609-7500
</TABLE>
 
                            ------------------------
 
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
      practicable after the effective date of this Registration Statement.
                            ------------------------
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box.  [ ]
 
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.  [ ]
 
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
 
     If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
 
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
check the following box.  [ ]
                            ------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------
           TITLE OF EACH CLASS OF              PROPOSED MAXIMUM AGGREGATE               AMOUNT OF
        SECURITIES TO BE REGISTERED                  OFFERING PRICE                REGISTRATION FEE(1)
------------------------------------------------------------------------------------------------------------
<S>                                          <C>                             <C>
Common Stock, no par value..................           $34,500,000                       $9,591
------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) Calculated pursuant to Rule 457(o) of the rules and regulations promulgated
    under the Securities Act of 1933.
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME EFFECTIVE
ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a), MAY
DETERMINE.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>   2
 
THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES
IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.
 
        SUBJECT TO COMPLETION, PRELIMINARY PROSPECTUS DATED MAY   , 1999
 
PROSPECTUS
                                1,875,000 SHARES
 
                              [SUN COMMUNITY LOGO]
 
                                  COMMON STOCK
                           -------------------------
 
     Sun is offering 1,875,000 shares of common stock. Sun expects the public
offering price to be between $15.00 and $17.00 per share. This is Sun's initial
public offering, and no public market currently exists for its shares. Assuming
all of the shares being offered are sold, Capitol Bancorp Ltd. will be
purchasing 956,250 shares in order to maintain its 51% ownership in Sun after
the offering.
 
                      Proposed Nasdaq National Market(sm)
                              Trading Symbol: SCBL
 
     INVESTING IN THE COMMON STOCK INVOLVES A HIGH DEGREE OF RISK. SEE "RISK
FACTORS" BEGINNING ON PAGE 4.
 
<TABLE>
<CAPTION>
                                                            PER SHARE     TOTAL
                                                            ---------    -------
<S>                                                         <C>          <C>
Public offering price.....................................   $           $
Underwriting discount(1)..................................   $           $
Proceeds to Sun...........................................   $           $
</TABLE>
 
-------------------------
 
(1) The per share underwriting discount will not apply to those shares being
    sold to Capitol.
 
     Sun has granted the underwriters a 30-day option to purchase up to 281,250
additional shares of its common stock on the same terms and conditions set forth
above to cover over-allotments, if any.
 
     THE SHARES OF COMMON STOCK THAT ARE BEING OFFERED ARE NOT SAVINGS ACCOUNTS
OR DEPOSITS OR OTHER OBLIGATIONS OF A BANK AND ARE NOT INSURED BY THE BANK
INSURANCE FUND OR THE SAVINGS ASSOCIATION INSURANCE FUND OF THE FEDERAL DEPOSIT
INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY.
 
     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
 
     Sun expects that the shares of common stock will be ready for delivery in
Chicago, Illinois on or about              , 1999.
 
                            EVEREN SECURITIES, INC.
 
                  THE DATE OF THIS PROSPECTUS IS MAY   , 1999
<PAGE>   3
 
                         SUN COMMUNITY BANCORP LIMITED
                           BANK AND OFFICE LOCATIONS
 
               (Graphic indicating the Bank and Office locations
                       of Sun Community Bancorp Limited)
 
<PAGE>   4
 
           CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
 
     This prospectus includes forward-looking statements.  Sun has based these
forward-looking statements on its current expectations and projections about
future events. These forward-looking statements are subject to risks,
uncertainties and assumptions, including, among other things:
 
     - the results of management's efforts to implement Sun's business strategy
       including planned expansion into new markets such as Nevada and
       California;
 
     - adverse changes in the banks' loan portfolios and the resulting credit
       risk-related losses and expenses;
 
     - adverse changes in the economy of the banks' market areas that could
       increase credit-related losses and expenses;
 
     - adverse changes in real estate market conditions that could also
       negatively affect credit risk;
 
     - the consequences of continued bank acquisitions and mergers in Sun's
       market, resulting in fewer but much larger and financially stronger
       competitors, which could increase competition for financial services to
       Sun's detriment;
 
     - fluctuations in interest rates and market prices, which could negatively
       affect net interest margins, asset valuations and expense expectations;
 
     - changes in regulatory requirements of federal and state agencies
       applicable to bank holding companies and Sun's present and future banking
       subsidiaries;
 
     - year 2000 (Y2K) computer, embedded chip and related data processing
       issues; and
 
     - other factors discussed in "Risk Factors."
 
       Sun undertakes no obligation to publicly update or otherwise revise any
       forward-looking statements, whether as a result of new information,
       future events or otherwise. In light of these risks, uncertainties and
       assumptions, the forward-looking events discussed in this prospectus
       might not occur.
                                        2
<PAGE>   5
 
                               PROSPECTUS SUMMARY
 
     This summary highlights information contained elsewhere in this prospectus.
Because this is a summary, it may not contain all of the information that is
important to you. To understand the offering fully, you should read the entire
prospectus, including the financial statements and related notes, before making
a decision to invest in Sun's common stock. The terms "Sun," "company," "we,"
"our," and "corporation" as used in this prospectus refer to Sun Community
Bancorp Limited and its subsidiaries as a consolidated entity, except where it
is made clear that it means only Sun. Also, sometimes we refer to our banking
subsidiaries, collectively, as "the banks."
 
     Unless stated otherwise, all share, per share and financial information in
this prospectus:
 
     - assumes a public offering price of $16.00, the midpoint of the range
       stated on the cover of this prospectus,
 
     - gives effect to Sun's September 1998 3-for-1 stock split of its common
       stock, and
 
     - assumes no exercise of the underwriters' option to purchase additional
       shares of common stock from Sun.
 
                                   HIGHLIGHTS
 
     This is Sun's initial public offering of common stock. Sun is offering
1,875,000 shares, 51% of which will be purchased by Capitol Bancorp Ltd. Capitol
currently owns 51% of Sun's common stock. Capitol will be purchasing shares at
the same price as the public.
 
                      ABOUT SUN COMMUNITY BANCORP LIMITED
 
     Sun is a bank holding company. Although viewed regulatorily as a bank
holding company, Sun describes itself as a bank development company. Bank
development includes managing Sun's bank subsidiaries and the formation of new
banks and bank holding companies.
 
     Sun currently has six operating bank subsidiaries, all of which are in
Arizona:
 
     - Bank of Tucson, formed in 1996,
 
     - Valley First Community Bank (Scottsdale), formed in 1997,
 
     - Camelback Community Bank (Phoenix), formed in 1998,
 
     - Southern Arizona Community Bank (Tucson), formed in 1998,
 
     - Mesa Bank (Mesa), formed in 1998, and
 
     - Sunrise Bank of Arizona (Phoenix), formed in 1998.
 
     Sun plans to continue formation of additional new banks in Arizona and
other southwestern locations.
 
                                 SUN'S HISTORY
 
     Bank of Tucson was formed in 1996. To enable further bank development in
the Southwest, Sun was formed later as a bank holding company. Bank of Tucson
became a wholly-owned subsidiary of Sun through an exchange of common stock in
1997.
                                        3
<PAGE>   6
 
     Sun has added five newly-formed, or de novo, banks to its consolidated
group. 1998 was a year of significant bank development activity with the
addition of four banks. Currently, Sun has six banks, all less than three years
old and four less than one year old. Sun filed applications in early 1999 for
regulatory approval for the formation of two new banks, one in Arizona and one
in Nevada. Sun also formed an additional subsidiary to facilitate bank
development in Nevada in early 1999.
 
     Sun's approach to bank development is patterned after Capitol Bancorp's
successful bank development strategy. Capitol has total assets of approximately
$1 billion and includes 17 banks currently. Capitol's assets and number of banks
include Sun and Sun's banks because of Capitol's 51% ownership of Sun.
 
                        SUN'S BANK DEVELOPMENT STRATEGY
 
     For the brief period of its existence, Sun's strategy has been and
continues to be the establishment of an attractive community banking franchise
through bank development. The foundation of Sun's strategy is that small banks
in large markets can thrive through their focus on serving the customer.
 
     Bank development is viewed by Sun as:
 
     - managing Sun's investments in its banks,
 
     - mentoring new banks through their most crucial and early formative
       periods,
 
     - identifying opportunities for development of new banks,
 
     - recruiting management from the local community for new banks,
 
     - recruiting directors from the local community for new banks,
 
     - facilitating the regulatory process for new banks, and
 
     - raising capital for new banks.
 
     When forming a new bank, Sun purchases a majority interest, but does not
seek 100% ownership. Each new bank commences a community stock offering prior to
opening. Ideally, up to 49% of the bank's stock will be sold in the local
community and involve more than 100 local investors. Sun views this joint
ownership to be a "shared vision." It is a "vision" that the community has a
need for a new bank, one that is focused on the customer. It is "shared" because
of the joint investment of community investors and Sun. Sun views the concept of
"shared vision" to also encompass other relationships, particularly applicable
to bank customers and employees.
 
                       SUN'S COMMUNITY BANKING PHILOSOPHY
 
     Sun's business is community banking. Sun's banks are each small, single
location facilities. Each bank has a president. The bank president's office is
adjacent to the bank lobby and his or her door is always open to customers. Each
bank makes its own credit decisions. Each bank has its own board of directors,
drawn from leaders within the local business community. Each bank has local
investors. Each bank is focused on the customer, offering the following:
 
     - the bank president serves customers,
 
     - the bank's decision-makers are on site,
                                        4
<PAGE>   7
 
     - the bank makes house calls (courier service or other on site delivery),
       and
 
     - the bank's location is convenient.
 
     Sun's banks seek the profitable customer relationship that has been
displaced through mergers, mass marketing and a herd approach to treating
customers. Each of Sun's banks is focused on commercial banking activities. They
emphasize commercial loans, but offer a complete array of credit facilities to
customers. The banks also offer a complete range of deposit products with
emphasis on business checking and time accounts.
 
     Sun provides the back-room and administrative support and mentoring to aid
in the development and growth of its banks.
 
                                SUN'S MANAGEMENT
 
     Sun's management team has significant banking experience with an average of
more than 10 years' industry experience.
 
     Sun's Chairman and Chief Executive Officer, Joseph D. Reid, has more than
15 years of experience in starting new banks and managing bank development. Thus
far, he has started 17 community banks and three bank development companies.
 
     Sun recently hired John S. Lewis as its president to oversee the growth of
Sun's banks and Sun's back-room and administrative support services to the
banks. He has over 22 years of bank management experience in the Southwestern
United States.
 
                              PURPOSE OF OFFERING
 
     The proceeds from the offering will be used by Sun for investment in new
banks subsidiaries and future bank holding company subsidiaries, to supplement
the capital of existing banks, and for other corporate purposes.
 
                       SUN'S ADDRESS AND TELEPHONE NUMBER
 
     Sun's principal executive offices are located at 2777 East Camelback Road,
Suite 101, Phoenix, Arizona 85016. Sun's telephone number is (602) 955-6100.
 
                  SUN'S RELATIONSHIP WITH CAPITOL BANCORP LTD.
 
     Capitol Bancorp Ltd. owns a majority of Sun's common stock. Capitol is a
publicly traded multi-bank holding company headquartered in Lansing, Michigan.
Sun's Chairman and Chief Executive Officer, Joseph D. Reid, is also Chairman,
President and Chief Executive Officer of Capitol. Capitol is a Nasdaq-listed
company; traded under the symbol CBCL.
 
     Capitol will purchase enough shares in this offering to maintain its 51%
ownership and majority control of Sun. As a result, investors in this offering
will become minority shareholders in Sun.
 
                              RECENT DEVELOPMENTS
 
     Sun filed applications in early 1999 for regulatory approval for the
formation of two new banks, one in Arizona and one in Nevada. Sun also formed an
additional subsidiary to facilitate bank development in Nevada. Sun recently
hired John S. Lewis as president and hired other additional management personnel
to support Sun's growth.
                                        5
<PAGE>   8
 
                                  THE OFFERING
 
Securities Offered for Sale.....    Shares of common stock of Sun Community
                                    Bancorp Limited. For a description of these
                                    shares, see "Description of Capital Stock."
 
Number of Shares being
Offered.........................    1,875,000. 956,250 of such shares (51%) will
                                    be purchased by Capitol Bancorp Ltd. In
                                    addition, the underwriters have a 30-day
                                    option to purchase up to 281,250 additional
                                    shares to cover over-allotments. For a
                                    description of this option, see
                                    "Underwriting."
 
Price to the Public.............    $     per share.
 
Number of Shares to be
Outstanding After the
  Offering......................    5,728,870 shares will be outstanding
                                    immediately after the offering. This number
                                    assumes that the underwriters do not
                                    exercise their over-allotment option and
                                    does not include the additional 281,250
                                    shares that will be reserved for issuance
                                    under Sun's stock option program after this
                                    offering. For a description of this plan,
                                    see "Management -- Stock Option Program."
 
Dividend Policy.................    Sun does not intend to pay any cash
                                    dividends in the foreseeable future.
 
Use of Proceeds.................    Investment in future bank subsidiaries and
                                    future bank holding company subsidiaries; to
                                    supplement the capital of existing bank
                                    subsidiaries or for other corporate
                                    purposes. For further details, see "Use of
                                    Proceeds."
 
Risk Factors....................    You should read the "Risk Factors" section
                                    before deciding to invest in this offering.
 
Proposed Nasdaq National
Market(SM) Symbol...............    SCBL
                                        6
<PAGE>   9
 
                SUMMARY OF SELECTED CONSOLIDATED FINANCIAL DATA
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
     Selected consolidated financial data as of and for the periods ended
December 31, 1998 are derived from, and should be read in conjunction with,
Sun's Consolidated Financial Statements appearing elsewhere in this prospectus.
Selected consolidated financial data as of and for the three months ended March
31, 1999 and 1998 should also be read in conjunction with the Condensed
Consolidated Interim Financial Statements of Sun and the Notes thereto,
appearing elsewhere in this prospectus, and the information set forth under
"Capitalization" and "Management's Discussion and Analysis of Financial
Condition and Results of Operations." As described elsewhere in this prospectus,
because of the number of banks added in 1997 and 1998, Sun's historical
operating results are of limited relevance in evaluating Sun's historical
financial performance and predicting Sun's future operating results.
 
<TABLE>
<CAPTION>
                                THREE MONTHS ENDED
                                    MARCH 31,         PERIODS ENDED DECEMBER 31,
                                ------------------   ----------------------------
                                  1999      1998     1998(1)    1997(2)   1996(3)
                                --------   -------   --------   -------   -------
                                   (UNAUDITED)
<S>                             <C>        <C>       <C>        <C>       <C>
SELECTED STATEMENT OF
  OPERATIONS DATA:
  Net interest income.........  $  2,090   $   940   $  5,064   $ 1,957   $   231
  Provision for loan losses...       209        41        379       268        49
  Noninterest income..........       118        59        334       125        10
  Noninterest expense.........     2,463       796      5,330     2,036       440
  Income (loss) before income
     taxes, minority interest
     and cumulative effect of
     accounting change........      (464)      162       (311)     (222)     (248)
  Net income (loss) before
     minority interest and
     accounting change........      (400)       87       (340)     (189)     (164)
  Minority interest in net
     losses of consolidated
     subsidiaries.............       224        30        397       117        --
  Net income (loss) before
     cumulative effect of
     accounting change........      (176)      117         57       (72)     (164)
  Cumulative effect of
     accounting change(4).....      (386)       --         --        --        --
  Net income (loss)...........      (562)      117         57       (72)     (164)
  Net income (loss) per share:
  Before cumulative effect of
     accounting change:
     Basic....................     (0.05)     0.04       0.02     (0.05)    (0.14)
     Diluted..................     (0.05)     0.04       0.02     (0.05)    (0.14)
</TABLE>
 
                                        7
<PAGE>   10
 
<TABLE>
<CAPTION>
                                THREE MONTHS ENDED
                                    MARCH 31,         PERIODS ENDED DECEMBER 31,
                                ------------------   ----------------------------
                                  1999      1998     1998(1)    1997(2)   1996(3)
                                --------   -------   --------   -------   -------
                                   (UNAUDITED)
<S>                             <C>        <C>       <C>        <C>       <C>
  After cumulative effect of
     accounting change:
     Basic....................     (0.15)     0.04       0.02     (0.05)    (0.14)
     Diluted..................     (0.15)     0.04       0.02     (0.05)    (0.14)
  Cash dividends paid per
     share....................        --        --         --        --        --
SELECTED BALANCE SHEET DATA
  (AT END OF PERIOD):
  Total assets................  $159,121   $74,465   $135,578   $55,007   $17,276
  Portfolio loans.............    86,167    35,655     68,080    31,236     4,850
  Nonperforming loans.........        --        --         --        --        --
  Deposits....................   122,613    55,322     98,782    42,899    12,021
  Debt obligations............        --        --         --        --        --
  Minority interests in
     consolidated
     subsidiaries.............     9,280     1,980      9,411     2,010       -0-
  Shareholders' equity........    26,128    16,803     26,627     9,690     5,189
                                --------   -------   --------   -------   -------
  Total capitalization........    35,408    18,783     36,038    11,700     5,189
  Book value per common
     share(5).................      6.78      5.90       6.92      5.10      4.51
  Number of banks.............         6         2          6         2         1
FINANCIAL RATIOS:
  Net interest margin.........      4.88%     4.71%      4.51%     4.52%     1.33%
  Allowance for loan losses as
     percentage of portfolio
     loans....................      1.05      1.00       1.02      1.01      1.01
  Total capitalization as a
     percentage of total
     assets(6)................     22.25     25.22      26.58     21.27     30.04
  Return on average assets....      n.m.      n.m.       n.m.      n.m.      n.m.
  Return on average equity....      n.m.      n.m.       n.m.      n.m.      n.m.
</TABLE>
 
-------------------------
 
Notes:
 
n.m. -- Not meaningful for period presented.
 
(1) Includes Camelback Community Bank (effective May 1998), Southern Arizona
    Community Bank (effective August 1998), Mesa Bank (effective October 1998)
    and Sunrise Bank of Arizona (effective December 1998).
 
(2) Includes Valley First Community Bank (effective June 1997). Sun acquired
    Bank of Tucson in a share exchange transaction effective May 1997.
 
(3) Period ended December 31, 1996 consisted only of Bank of Tucson which
    commenced operations effective June 1996.
                                        8
<PAGE>   11
 
(4) Cumulative effect of accounting change (net of income tax benefit) relates
    to implementation of new accounting standard requiring write-off of
    unamortized capitalized start-up costs effective January 1, 1999.
 
(5) Excludes outstanding stock options.
 
(6) Includes shareholders' equity and minority interest in consolidated
    subsidiaries.
                                        9
<PAGE>   12
 
                                  RISK FACTORS
 
     Investing in the common stock from this offering will provide you with an
equity ownership interest in Sun. As a Sun shareholder, you will be subject to
risks inherent in our business. You should carefully consider the following
factors as well as other information contained in this prospectus before
deciding to invest in shares of Sun's common stock.
 
SUN HAS A LIMITED OPERATING HISTORY AND MAY NEVER BECOME PROFITABLE.
 
     Sun's oldest bank, Bank of Tucson, was formed in June 1996. Sun began its
operations as a bank holding company in May 1997. Four of its six banks are less
than one year old. Sun has incurred losses since its formation. Because of the
early stages of development of Sun and its banks, it is likely that Sun will
incur additional operating losses in future periods and may never produce
earnings. Net operating losses and the resulting retained-earnings deficit
reduce the underlying book value per share of Sun's common stock.
 
NEWLY FORMED BANKS ARE LIKELY TO INCUR SIGNIFICANT LOSSES.
 
     Four of Sun's six bank subsidiaries are less than one year old. De novo
banks are expected to incur operating losses in their early periods of operation
because of an inability to generate sufficient net interest income to cover
operating costs. Those operating losses can be significant and can occur for
longer periods than planned depending upon the ability to control operating
expenses and generate net interest income. Due to a recent accounting rule
change that requires immediate write-off of start-up costs, future de novo banks
are expected to report larger early period operating losses.
 
SUN MAY BE UNABLE TO EFFECTIVELY MANAGE ITS GROWTH.
 
     Sun has rapidly and significantly expanded its operations and anticipates
that further expansion will be required to realize its growth strategy. Sun's
rapid growth has placed significant demands on its management and other
resources which, given its expected future growth rate, are likely to continue.
To manage future growth, Sun will need to attract, hire and retain highly
skilled and motivated officers and employees and improve existing systems and/or
implement new systems for:
 
     - transaction processing;
 
     - operational and financial management; and
 
     - training, integrating and managing Sun's growing employee base.
 
FAVORABLE ENVIRONMENT FOR FORMATION OF NEW BANKS COULD CHANGE ADVERSELY.
 
     Sun's growth strategy includes, among other things, the formation of
additional new banks. Thus far, Sun has experienced favorable business
conditions for the formation of its small, community and customer-focused banks.
Those favorable conditions could change suddenly or over an extended period of
time whereby the availability of financial capital, human capital or general
economic conditions could preclude or severely limit expansion opportunities. To
the extent Sun is unable to effectively deploy its capital in new or existing
banks, this could adversely affect future earnings and the value of Sun's common
stock.
 
                                       10
<PAGE>   13
 
SUN'S BANKS ARE SMALL, HAVE LIMITATIONS ON THE SIZE OF LOANS THEY CAN MAKE AND
HAVE MINIMAL MARKET SHARE.
 
     Sun endeavors to capitalize its newly formed banks with the lowest dollar
amount permitted by regulatory agencies. As a result, the legal lending limits
of Sun's banks severely constrain the size of loans that those banks can make.
Additionally, many of the banks' competitors have significantly larger
capitalization and, hence, an ability to make significantly larger loans.
 
     Sun's banks are intended to be small in size. They each operate from single
locations. They are very small relative to the dynamic markets in which they
operate. Each of those markets has a variety of big and small competitors that
have resources far beyond those of Sun's banks. While it is the intention of
Sun's banks to operate as niche players within their geographic markets, their
continued existence is dependent upon being able to gain profitable market share
in those large markets that are dominated by substantially larger regulated and
unregulated financial institutions.
 
NEW INVESTORS IN SUN WILL BE MINORITY SHAREHOLDERS.
 
     Sun is a 51% owned subsidiary of Capitol Bancorp Ltd. Capitol is the
controlling shareholder of Sun. Capitol will continue to be the majority
shareholder of Sun after this offering is completed. Because of that majority
ownership, new investors in this offering will be minority shareholders and will
not be able to gather sufficient votes to cause a shareholder vote in opposition
to Capitol. Accordingly, Capitol may have substantial influence over the
business and policies of Sun, including the election of directors, approving or
disapproving mergers or consolidations, and other matters.
 
     Because it is a bank holding company that is regulated by the Federal
Reserve Board, Capitol could be caused to take actions with respect to Sun that
would not be in the best interests of Sun's minority shareholders. Further,
Capitol will, for the foreseeable future, have the ability to take actions with
respect to its majority interest in Sun which may not be consistent with the
objectives or desires or Sun's minority shareholders.
 
THERE ARE POTENTIAL CONFLICTS OF INTEREST RELATING TO CAPITOL BANCORP LTD.
 
     Because of Sun's relationship with Capitol and directors and officers which
serve both companies, Sun is likely to face potential conflicts of interest
relating to Capitol. Capitol is a publicly traded bank holding company.
 
     Certain of Sun's executive officers also are directors, officers or
employees of Capitol and either own, or hold options to purchase, equity
securities of Capitol. In particular, Joseph D. Reid, Chairman and Chief
Executive Officer of Sun, is also Chairman, President and Chief Executive
Officer of Capitol and in such capacity has majority voting control over
Capitol's investment in Sun. Upon the consummation of this offering, Capitol
also will directly own approximately 51% of Sun's outstanding common stock.
Accordingly, conflicts of interest may arise from time to time between Sun and
Capitol particularly with respect to the pursuit of overlapping corporate
opportunities. To date, there have been no material conflicts of interest
between Sun and Capitol, however there can be no assurance that conflicts will
not arise in the future. There is no formal process or procedure agreed to by
Capitol or Sun for resolution of future conflicts of interest, if any.
 
     Sun intends to review related-party transactions with Capitol on a
case-by-case basis. Because Sun has directors and officers in common with
Capitol, there may be inherent conflicts of interest when such directors and
officers make decisions related to transactions
 
                                       11
<PAGE>   14
 
between Sun and Capitol. Sun could lose valuable management input from such
interested directors and officers.
 
SUN MAY POSSIBLY FAIL TO OBTAIN OR MAINTAIN EXCHANGE LISTING ON THE NASDAQ
NATIONAL MARKET(SM).
 
     Sun intends to list its common stock on the Nasdaq National Market(SM), and
Sun believes that it will be able to satisfy and maintain its listing
requirements when it completes this offering. If Sun is unable to satisfy and
maintain the requirements for continued listing on the Nasdaq National
Market(SM), its shares will not be traded on that market.
 
SUN'S SHAREHOLDERS MAY EXPERIENCE LIQUIDITY PROBLEMS.
 
     If Sun's shares are not listed as intended, trading, if any, would be
conducted in the over-the-counter market, which was established for securities
that do not meet the Nasdaq National Market listing requirements. Consequently,
selling Sun's shares would be more difficult because smaller quantities of
shares could be bought and sold, transactions could be delayed, and security
analysts' and news media coverage of Sun may be reduced. These factors could
result in lower prices and larger spreads in the bid and ask prices for Sun's
shares.
 
SUN IS DEPENDENT UPON THE CONTRIBUTIONS OF ITS KEY MANAGEMENT PERSONNEL.
 
     Sun's future success depends, in large part, upon the continuing
contributions of its key management personnel, including bank presidents. Some
of Sun's executive officers have been with Sun for less than a year. The loss of
services of one or more key employees at Sun or its bank subsidiaries could have
a material adverse effect on Sun. Sun can provide no assurance that it will be
able to retain any of its key officers and employees or attract and retain
qualified personnel in the future.
 
     Joseph D. Reid, Sun's Chairman and Chief Executive Officer, has an
employment agreement which expires on January 1, 2001. The agreement will
automatically extend for another year unless Mr. Reid or Sun gives written
notice 45 days prior to the expiration date of the agreement. Certain members of
Sun's senior management also have employment agreements with Sun. See
"Management -- Employment Agreements."
 
     Mr. Reid and two other executive officers of Sun are also executive
officers of Capitol, the controlling and majority shareholder of Sun. Their
continued employment with Sun is, in part, dependent upon their continued
employment with Capitol. Since the services of these executive officers are not
exclusively devoted to Sun, there is a risk that these management resources may
not be immediately available when needed.
 
     Sun does not have "key person" life insurance policies on any of its key
personnel.
 
IF SUN CANNOT RECRUIT ADDITIONAL PERSONNEL, SUN'S BUSINESS MAY SUFFER.
 
     Sun's strategy is also dependent upon its continuing ability to attract and
retain other highly qualified personnel. Competition for such employees among
financial institutions is intense. Availability of personnel with appropriate
community banking experience varies. If Sun does not succeed in attracting new
employees or retaining and motivating current and future employees, Sun's
business could suffer significantly.
 
     Since beginning operations, Sun has expanded to approximately 110
employees. Sun also has employed many new key personnel, including a President
and a number of key
                                       12
<PAGE>   15
 
managerial and operations personnel. Sun expects to continue to add additional
key personnel in the near future.
 
SUN AND ITS BANKS OPERATE IN A HIGHLY REGULATED ENVIRONMENT AND ARE SUBJECT TO
SUPERVISION AND EXAMINATION BY VARIOUS FEDERAL AND STATE REGULATORY AGENCIES.
 
     As a bank holding company, Sun is subject to regulation and supervision
primarily by the Federal Reserve Board. Sun's current bank subsidiaries are
subject to supervision and regulation primarily by the state banking regulators
and the FDIC.
 
     Federal and the various state laws and regulations govern numerous matters
of the banks, including;
 
     - adequate capital and financial condition,
 
     - permissable types, amounts and extensions of credit and investments,
 
     - permissable nonbanking activities, and
 
     - restrictions on dividend payments.
 
     Federal and state regulatory agencies have extensive discretion and power
to prevent or remedy unsafe or unsound practices or violations of law by banks
and bank holding companies. Sun and its banks also undergo periodic examinations
by one or more regulatory agencies. Following such examinations Sun may be
required, among other things, to change its asset valuations or the amounts of
required loan loss allowances or to restrict its operations. Such actions would
result from the regulators' judgments based on information available to them at
the time of their examination. The banks' operations are also subject to a wide
variety of state and federal consumer protection and similar statutes and
regulations. Such federal and state regulatory restrictions limit the manner in
which Sun and its banks may conduct business and obtain financing. Those laws
and regulations can and do change significantly from time to time, and any such
change could adversely affect Sun. See "Supervision and Regulation."
 
REGULATORY INTERVENTION COULD SEVERELY LIMIT FUTURE EXPANSION PLANS.
 
     The banking industry is highly regulated. Sun and each of its banks are
subject to regulation and supervision by various governmental agencies. In order
to carry out some of its expansion plans, Sun is required to obtain permission
from the Federal Reserve Board. Additionally, applications for the formation of
new banks are subject to the prior approval of state and federal bank regulatory
agencies.
 
     While Sun's recent experience with the regulatory application process has
been favorable, the future climate for regulatory approval is impossible to
predict. Regulatory agencies could prohibit or otherwise significantly restrict
expansion plans of Sun, its current bank subsidiaries and future de novo banks.
 
THE BANKS' ALLOWANCES FOR LOAN LOSSES MAY PROVE INADEQUATE TO ABSORB ACTUAL
FUTURE LOAN LOSSES.
 
     Sun believes that its consolidated allowance for loan losses is maintained
at a level adequate to absorb any inherent losses in the loan portfolios of its
banks. Management's estimates are used to determine the allowance that is
considered adequate to absorb losses in the loan portfolios of Sun's banks.
Management's estimates are based on historical loan loss experience, specific
problem loans, value of underlying collateral and other relevant factors. These
estimates are subjective and their accuracy depends on the outcome of
                                       13
<PAGE>   16
 
future events. Actual future losses may differ from current estimates. Depending
on changes in economic, operating and other conditions, including changes in
interest rates, that are generally beyond Sun's control, actual loan losses
could increase significantly. As a result, such losses could exceed current
allowance estimates. No assurance can be provided that the allowance will be
sufficient to cover actual future loan losses should such losses be realized.
 
     Because Sun's banks do not have seasoned loan portfolios, it is likely that
the ratio of the allowance for loan losses will need to be increased in future
periods as those loan portfolios become more mature. If it becomes necessary to
increase the ratio of the allowance for loan losses to total loans, such
increases would be accomplished through higher provisions for loan losses, which
will adversely impact net income or will increase operating losses.
 
     In addition, bank regulatory agencies, as an integral part of their
supervisory functions, periodically review the adequacy of the allowance for
loan losses. Such regulatory agencies may require Sun or its banks to increase
its provision for loan losses or to recognize further loan charge-offs based
upon judgments different from those of management. Any increase in the allowance
required by regulatory agencies could have a negative impact on Sun's operating
results.
 
CHANGES IN INTEREST RATES MAY ADVERSELY AFFECT SUN'S BUSINESS.
 
     Changes in Net Interest Income.  Sun's profitability is significantly
dependent on net interest income. Net interest income is the difference between
interest income on interest-earning assets, such as loans, and interest expense
on interest-bearing liabilities, such as deposits. Therefore, any change in
general market interest rates, whether as a result of changes in monetary
policies of the Federal Reserve Board or otherwise, can have a significant
effect on our net interest income. Sun's assets and liabilities may react
differently to changes in overall market rates or conditions because there may
be mismatches between the repricing or maturity characteristic of assets and
liabilities. As a result, changes in interest rates can affect net interest
income in either a positive or negative way.
 
     Changes In The Yield Curve.  Changes in the difference between short and
long-term interest rates, commonly known as the yield curve, may also harm Sun's
business. For example, short-term deposits may be used to fund longer-term
loans. When differences between short-term and long-term interest rates shrink
or disappear, the spread between rates paid on deposits and received on loans
could narrow significantly, decreasing net interest income.
 
NO PRIOR MARKET FOR COMMON STOCK AND POSSIBLE VOLATILITY OF STOCK PRICE.
 
     Prior to this offering, there has been no established market price for
Sun's common stock. There can be no assurance that an active public market for
Sun's common stock will develop at any time in the future or continue if such a
market develops. If a public market develops, the market price of Sun's common
stock may be subject to significant fluctuations in response to numerous
factors, including variations in the annual or quarterly financial results of
Sun or its competitors, changes by financial research analysts in their
estimates of the earnings of Sun or its competitors or the failure of Sun or its
competitors to meet such estimates, conditions in the economy in general or the
banking industry in particular, or unfavorable publicity affecting Sun, its
banks, or the industry. In addition, equity markets have, on occasion,
experienced significant price and volume fluctuations
 
                                       14
<PAGE>   17
 
that have affected the market price for many companies' securities and have been
unrelated to the operating performance of those companies. Any fluctuation may
adversely affect the prevailing market price of Sun's common stock.
 
     In addition to the foregoing, any significant sales of Sun's common stock
owned by Capitol could result in a significant reduction in the market price of
Sun's common stock.
 
SUN HAS NO PRESENT INTENTION TO PAY DIVIDENDS AND DOES NOT PLAN TO PAY DIVIDENDS
IN THE FORESEEABLE FUTURE.
 
     Sun has not paid cash dividends on its common stock and does not plan to
pay dividends in the foreseeable future. Sun's ability to declare a dividend on
common stock will depend upon, among other things, future earnings, operating
and financial condition, capital requirements, general business conditions and
receipt of regulatory approvals, if then required. Sun is a legal entity
separate and distinct from its bank subsidiaries. Substantially all of Sun's
revenue and cash flows, including funds available for the payment of operating
expenses, is dependent upon payment of management fees and data processing fees
to Sun by its banks. Additionally, any funds available for payments of dividends
by Sun in the future, if any, will be mostly dependent upon the payment of
dividends to Sun from its banks. Dividends payable by the banks are severely
restricted by existing regulatory requirements. Further, most of Sun's banks
have a retained-earnings deficit and would be prohibited from payment of any
cash dividends until the deficit has been eliminated and a sufficient amount of
retained-earnings would exist for the payment of a dividend.
 
YOU WILL INCUR IMMEDIATE AND SUBSTANTIAL DILUTION IN YOUR SHARES.
 
     Investors in this offering will experience an immediate and substantial
dilution in the book value of the common stock. If you purchase shares of Sun's
common stock, and Sun sells 1,875,000 shares at an assumed offering price of
$16.00, the midpoint of the price range on the cover page of this prospectus,
the pro forma net book value of your shares at March 31, 1999 would have been
$9.56. This is $6.44 less than your purchase price. See "Dilution."
 
MANAGEMENT WILL HAVE SUBSTANTIAL DISCRETION OVER THE USE OF THE PROCEEDS OF THIS
OFFERING.
 
     Sun has not designated specific uses for the net proceeds of this offering.
Sun intends to use the net proceeds primarily for general corporate purposes and
the expansion of Sun's business by establishing new banking locations to the
extent opportunities are identified. Accordingly, you must rely upon the
judgment of Sun's management who will have significant flexibility with respect
to applying the net proceeds. See "Use of Proceeds."
 
POSSIBLE FUTURE SALES OF SHARES COULD AVERSELY AFFECT PREVAILING MARKET PRICES
FOR SUN'S STOCK.
 
     Sales of substantial amounts of Sun's common stock in the public market
under Rule 144 of the Securities Act of 1933 or otherwise, or the perception
that such sales could occur, may adversely affect prevailing market prices of
the common stock. If the prevailing market prices are affected, those sales
could impair Sun's future ability to raise additional capital through an
offering of its equity securities or to effect acquisitions using shares of
common stock. As of the date of this prospectus, approximately 1,140,041 shares
 
                                       15
<PAGE>   18
 
of common stock, or 29.6% of the shares of common stock currently outstanding,
are not subject to any resale restrictions under the Securities Act, and
approximately 3,670,079 shares of common stock, including the shares to be
purchased by Capitol in this offering, or 64.1% of the shares of common stock
that will be outstanding after the offering, are or will be subject to resale
restrictions under Rule 144. Subject to certain contractual restrictions
described elsewhere in this prospectus, 2,670,079 shares may currently be sold
subject to applicable volume restrictions. See "Shares Eligible for Future
Sale."
 
SUN RELIES ON COMPUTER HARDWARE, SOFTWARE, AND INTERNET-BASED TECHNOLOGY THAT
COULD HAVE YEAR 2000 PROBLEMS AND ADVERSELY AFFECT THE DELIVERY OF BANK SERVICES
TO OUR CUSTOMERS.
 
     Sun relies extensively on computer hardware, software and related
technology, together with data, in the operation of its business. This
technology and data are used in creating and delivering bank products and
services, and in Sun's internal operations, such as billing and accounting. In
connection with Capitol, who uses systems similar to those Sun uses, Sun has
initiated an enterprise-wide program to evaluate the technology and data used in
the creation and delivery of bank products and services and in Sun's internal
operations. If Sun fails to complete this implementation of its Year 2000 plan
prior to the commencement of the Year 2000, or bank customers and suppliers fail
to successfully remediate their own Year 2000 issues, it could materially
adversely affect Sun and its banks. The program includes resolving any Year 2000
issues that are related to Sun and its banks' systems, customers and suppliers.
However, there can be no assurances that third parties will successfully
remediate their own Year 2000 issues over which Sun has no control. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations for Periods Ended December 31, 1998, 1997 and 1996 -- Year 2000."
 
SUN MAKES FORWARD-LOOKING STATEMENTS IN THIS PROSPECTUS THAT MAY NOT PROVE TO BE
ACCURATE.
 
     This prospectus contains or incorporates forward-looking statements
including statements regarding, among other items, Sun's business strategy,
growth strategy, and anticipated trends in our business. Sun may make additional
written or oral forward-looking statements from time to time in filings with the
Securities and Exchange Commission or otherwise. When Sun uses the words
"believe," "expect," "anticipate," "project" and similar expressions, this
should alert you that this is a forward-looking statement. Forward-looking
statements speak only as of the date the statement is made. These
forward-looking statements are based largely on Sun's expectations. They are
subject to a number of risks and uncertainties, some of which cannot be
predicted or quantified and are beyond Sun's control. Future events and actual
results could differ materially from those set forth in, contemplated by, or
underlying the forward-looking statements. Statements in this prospectus
describe factors, among others, that could contribute to or cause these
differences. In light of these risks and uncertainties, there can be no
assurance that the forward-looking information contained in this prospectus will
in fact transpire or prove to be accurate. All subsequent written and oral
forward-looking statements attributable to us or persons acting on our behalf
are expressly qualified in their entirety by this section.
 
                                       16
<PAGE>   19
 
                                USE OF PROCEEDS
 
     The net proceeds to Sun from the offering (after deducting estimated
expenses of the offering, which are expected to be $               ) are
estimated to be approximately $     million. All of the net proceeds from the
offering will be used by Sun for investment in future bank subsidiaries and
future bank holding company subsidiaries, to supplement the capital of existing
banks or for other corporate purposes. Pending application of the net proceeds
described above, Sun currently intends to place such funds as deposits at
affiliated or unaffiliated banks or invest in high-grade investment securities.
 
     The foregoing represents Sun's present intentions with respect to the
allocation of proceeds of the offering based upon its present plans and business
conditions. The occurrence of certain unforeseen events or changed business
conditions, however, could result in the application of the proceeds of the
offering in a manner other than as described in this prospectus. See "Risk
Factors -- Management will have substantial discretion over the use of proceeds
of this offering."
 
                                       17
<PAGE>   20
 
                                 CAPITALIZATION
 
     The table presented below shows Sun's actual total capitalization as of
March 31, 1999, and as adjusted to reflect the issuance and sale of 1,875,000
shares of common stock which Sun is offering in this prospectus and the
application of the estimated net proceeds as described in "Use of Proceeds."
 
<TABLE>
<CAPTION>
                                                           ACTUAL     AS ADJUSTED
                                                          --------    -----------
                                                          (DOLLARS IN THOUSANDS)
<S>                                                       <C>         <C>
Debt obligations........................................  $    -0-     $    -0-
Minority interest in consolidated subsidiaries..........     9,280        9,280
Shareholders' equity
  Common stock, no par value, 10,000,000 shares
     authorized(1); issued and outstanding:
     Actual -- 3,853,870 shares
     As adjusted -- 5,728,870 shares....................    26,866       55,528
  Retained earnings deficit.............................      (742)         (742)
  Market value adjustment (net of tax effect) for
     investment securities available for sale
     (accumulated other comprehensive income)...........         4            4
                                                          --------     --------
          Total stockholders' equity....................    26,128       54,790
                                                          --------     --------
          Total capitalization..........................  $ 35,408     $ 64,070
                                                          ========     ========
Stock options outstanding, each to purchase one share of
  common stock..........................................   560,973      842,223(2)
                                                          ========     ========
Capital ratios:
  Ratio of total capitalization to total assets.........     22.25%       34.12%
  Tier I risk-weighted ratio............................     25.68        42.41
  Total risk-weighted ratio.............................     27.61        43.90
</TABLE>
 
-------------------------
(1) A proposed amendment to Sun's Articles of Incorporation has been submitted
    to Sun's shareholders to increase the number of authorized shares of common
    stock from 10,000,000 to 50,000,000. See "Description of Capital
    Stock -- Proposed Amendment to Articles of Incorporation."
 
(2) Assumes additional stock options will be granted, as a result of this
    offering pursuant to Sun's stock option program. See "Management -- Stock
    Option Program."
 
     Prior to the offering, there has been no public market for Sun's common
stock.
 
                                       18
<PAGE>   21
 
                                DIVIDEND POLICY
 
     Sun has not declared or paid a cash dividend on its common stock and does
not plan to declare or pay a cash dividend on the common stock in the
foreseeable future. Dividends may be paid only out of legally available funds as
permitted by statute, subject to the discretion of Sun's board of directors. See
"Risk Factors -- Sun Has No Present Intention To Pay Dividends and Does Not Plan
To Pay Dividends in the Forseeable Future" and "Supervision and
Regulation -- Financial Institution Regulation Generally -- Dividend
Limitations."
 
     Sun is a legal entity separate and distinct from its bank subsidiaries.
Substantially all of Sun's revenues and cash flow, including funds available for
other operating expenses, will be paid from fees charged by Sun to its banks for
management and data processing services. Funds available for payments of
dividends by Sun would principally consist of dividends paid to Sun by its
banks. Due to the development status of Sun's banks, their ability to pay
dividends to Sun is severely limited. There are also statutory and regulatory
limitations on the amount of dividends that may be paid to Sun by its banks. See
"Risk Factors -- Sun Has No Present Intention to Pay Dividends and Does Not Plan
To Pay Dividends in the Forseeable Future" and "Supervision and
Regulation -- Financial Institution Regulation Generally -- Dividend
Limitations" for a discussion of regulatory restrictions on the payment of
dividends by the banks to Sun.
 
                                       19
<PAGE>   22
 
                                    DILUTION
 
     The following table summarizes the pro forma book value per share resulting
from this offering, representing an immediate increase of $2.78 per share to
current shareholders and an immediate dilution in book value of $6.44 per share
to persons purchasing shares in this offering:
 
<TABLE>
<S>                                                           <C>      <C>
Per share price in this offering............................           $16.00
Pro forma net book value per share at March 31, 1999........  $6.78
Increase attributable to investors in this offering.........   2.78
                                                              -----
Pro forma net book value per share after offering...........             9.56
                                                                       ------
Per share book value dilution to investors in this
  offering(1)...............................................           $ 6.44
                                                                       ======
</TABLE>
 
---------------
 
(1) Does not give effect to and assumes no prior exercise of any of currently
    outstanding options to purchase up to an aggregate of 560,973 shares of
    common stock, all of which are currently exercisable. If such options were
    exercised, the pro forma net book value per share after the offering would
    be $9.38 and the per share book value dilution to investors in this offering
    would be $6.62.
 
     The following table compares, on a pro forma basis at March 31, 1999, the
total number of shares of common stock purchased from Sun, the total cash
consideration paid and the average price per share paid by existing shareholders
prior to the offering and assuming the sale of 1,875,000 shares.
 
<TABLE>
<CAPTION>
                               SHARES PURCHASED      TOTAL CONSIDERATION
                             --------------------   ----------------------    AVERAGE
                                         PERCENT                  PERCENT      PRICE
                              NUMBER     OF TOTAL     AMOUNT      OF TOTAL   PER SHARE
                             ---------   --------   -----------   --------   ---------
<S>                          <C>         <C>        <C>           <C>        <C>
Existing shareholders(1)...  3,853,870      67%     $26,866,516      47%      $ 6.97
Investors in this
  offering.................  1,875,000      33%      30,000,000      53%       16.00
                             ---------     ----     -----------     ----
          Total............  5,728,870     100%     $56,866,516     100%
                             =========     ====     ===========     ====
</TABLE>
 
-------------------------
(1) Does not give effect to and assumes no prior exercise of any currently
    outstanding options to purchase up to an aggregate of 560,973 shares of
    common stock, all of which are currently exercisable.
 
                                       20
<PAGE>   23
 
                              RECENT DEVELOPMENTS
 
PENDING BANK APPLICATIONS
 
     In February 1999, Sun filed applications for formation of East Valley
Community Bank to be located in Chandler, Arizona. These bank applications are
subject to approval by the Arizona Banking Department and the Federal Deposit
Insurance Corporation. Additionally, Sun's proposed purchase of at least 51% of
the common stock of East Valley Community Bank is subject to approval by the
Federal Reserve Board or, under delegated authority, the Federal Reserve Bank of
Chicago.
 
     In early 1999, Nevada Community Bancorp Limited was formed to become a bank
holding company to be engaged in bank development activities in the state of
Nevada. Sun owns a majority interest in Nevada Community Bancorp Limited. In
April 1999, an application was filed for Desert Community Bank to be formed and
located in the community of Las Vegas, Nevada. That application is subject to
approval by the state of Nevada and the FDIC. Additionally, approval by the
Federal Reserve Board or, under delegated authority, the Federal Reserve Bank of
Chicago will be necessary for Nevada Community Bancorp Limited's purchase of a
majority interest in Desert Community Bank.
 
RECENT HIRINGS
 
     In February 1999, Sun hired John S. Lewis to become President and a
director of Sun. Mr. Lewis has substantial banking experience in the
Southwestern portion of the United States with 22 years of prior banking
experience. Mr. Lewis will oversee bank performance and Sun's support services
provided to its banks.
 
     In early 1999, Sun hired Thomas C. Mangione to become Chief Operating
Officer of Nevada Community Bancorp Limited. Mr. Mangione has over 23 years of
experience in the banking industry, serving in varying capacities at First
Interstate Bank (subsequently merged with Wells Fargo). He also served on the
board of directors of Wells Fargo Bank from 1995 to 1996. Mr. Mangione will
provide oversight to Nevada Community Bancorp Limited's banks.
 
                                       21
<PAGE>   24
 
                                    BUSINESS
 
OVERVIEW
 
     Sun Community Bancorp Limited is a recently-formed company engaged in the
business of bank development. Its approach to banking is focused on the
development and operation of a number of small banks during an era of industry
consolidation and branching. Sun believes it has developed a unique approach
which includes local investment in its community banks. Each of Sun's banks
operates quite independently. Each bank is community-focused in its business
activities in terms of local investment, local leadership and local
decision-making in all aspects of making loans and providing deposit services.
Sun's primary roles are bank development and providing services, such as data
processing, accounting and similar administrative activities, which are most
efficiently performed on a combined basis for the banks.
 
     Sun was organized as an Arizona corporation on November 4, 1996. It became
a bank holding company in May 1997 when it completed a share exchange with the
shareholders of Bank of Tucson, an Arizona commercial bank. Bank of Tucson had
been formed by the same group of organizers as a de novo (newly formed) bank in
June of 1996. As a result of that share exchange, Bank of Tucson became Sun's
first bank subsidiary, and is 100% owned by Sun.
 
     Although viewed regulatorily as a bank holding company, Sun describes
itself as a bank development company. The concept of bank development differs
from 'bank holding' because it is more active, proactive and dynamic.
 
     Sun views bank development as:
 
     - managing Sun's investments in its banks,
 
     - mentoring new banks through their most crucial and early formative
       periods,
 
     - identifying opportunities for development of new banks,
 
     - recruiting management from the local community for new banks,
 
     - recruiting directors from the local community for new banks,
 
     - facilitating the regulatory process for new banks, and
 
     - raising capital for new banks.
 
     Sun's approach to bank development is patterned after Capitol Bancorp's
successful bank development strategy. Capitol has total assets of approximately
$1 billion and includes 17 banks currently. Capitol's assets and number of banks
include Sun and Sun's banks because of Capitol's 51% ownership of Sun.
 
SUN'S DE NOVO BANKING PHILOSOPHY
 
     The focus of Sun's de novo banking philosophy is the bank customer. In this
era of bank consolidation, branch closings and treating bank customers as a
commodity, management believes opportunities for customer-focused banking are
significant.
 
     Sun's banks are small and operate in big markets. They operate from a
single location and do not have any branches. Each bank has a president. The
president's office is adjacent to the bank lobby and his or her door is open to
customers. The bank president serves customers. Each bank makes its own credit
decisions. Each bank prices and markets its own loan and deposit products. Each
bank has its own board of directors, drawn mainly
                                       22
<PAGE>   25
 
from leaders within the local business community, which has full authority over
the bank, in contrast to "advisory" boards which lack authority. Each bank
begins with local investors. Each bank endeavors to be a solid citizen in its
community.
 
     Each bank is focused on the customer. Sun provides the back-room and
administrative support and mentoring to aid in the development and growth of the
banks.
 
     In the past few years, a number of independent de novo banks have been
formed by others, resulting from the waves of consolidation in the banking
industry. However, Sun's de novo banking philosophy differs from some other de
novo banks in a number of significant ways.
 
     Sun emphasizes minimal capitalization of its banks, generally $5 million or
less, in order to achieve the benefits of leverage earlier and at a
significantly lower cost than independently formed de novos. Sun's external
costs of raising capital for its de novo banks on a community offering basis
have typically approximated less than $175,000 per bank. Some other de novo
banks are, in Sun's opinion, excessively capitalized at $10 million or more,
often through an initial public offering of their common stock. When capitalized
at that level, the costs of raising capital can be significant, such as $750,000
or more, and can often take an extended period of time to achieve appropriate
leverage (i.e., adding sufficient loans and deposits to create a reasonable
return on equity). Sun's banks emphasize their smallness. Larger de novo banks
tend to emphasize their need for a targeted market share because they need to,
in part, due to their larger capitalization. On the other hand, Sun's banks do
not focus on market share as a key indicator of success; being a small bank in a
big market can provide a superior rate of return on deployed capital and assets.
 
     Sun's banks have access to an efficient back-room and a management team
which has significant experience in starting community banks. In contrast, some
other de novo banks must independently identify and implement back-room systems
and typically lack experience in starting new banks. Sun's banks start small and
stay small from a management and staffing perspective. Typically, Sun's banks
begin with a total staff of less than 10 people and then add staff when growth
and customer service needs dictate. Larger de novo banks tend to have
infrastructure or larger staff and hierarchy.
 
     Recent industry statistics report that de novo banks on average take
between one and two years to reach break-even operating results. Sun's banks
seek to achieve profitability within their first year of operation and to earn
back their operating losses in advance of their 36th month of operation. For
example, Bank of Tucson achieved profitability in its 11th month and cumulative
profitability in its 19th month of operation.
 
SUN'S CONCEPT OF 'SHARED VISION'
 
     Each de novo bank conducts a community stock offering prior to opening.
Typically, up to 49% of the de novo bank's stock will be sold in the local
community, generally involving more than 100 local investors. When investing in
a new bank, Sun purchases a majority interest and does not seek 100% ownership.
 
     Sun views this joint ownership to be a 'shared vision'. It is a 'vision'
that the community has a need for a new bank, one which is focused on the
customer. It is 'shared' because of the joint investment of community investors
and Sun. Sun's management believes its 'shared vision' concept also applies to
other relationships, including bank customers and employees.
 
                                       23
<PAGE>   26
 
     Sun's strategy of involving community investors in the de novo banks has
several advantages:
 
     - requires less capital investment in new banks by Sun at the outset,
 
     - ties the local community to the bank better than solely through
       marketing,
 
     - reduces the amount of early period startup losses in Sun's net income,
       and
 
     - leverages Sun's capital.
 
     Under current accounting rules, entities which are more than 50% owned by
another are consolidated or combined for financial reporting purposes. This
means that all of the banks' assets are included in Sun's consolidated balance
sheet, regardless of whether Sun owns 51% or 100%. Sun's net income, however,
will only include its subsidiaries net income or net loss to the extent of its
ownership percentage. This means that when a de novo bank incurs early startup
losses, Sun will only reflect that loss based on its ownership percentage.
Conversely, when banks generate income, Sun will only reflect that income based
on its ownership percentage. Based on Sun's experience, it typically requires a
full year of operation before a de novo bank becomes profitable.
 
SUN'S CURRENT OPERATIONS
 
     After its initial formation and first bank addition, Sun added several
newly-formed banks to its consolidated group. In 1997, Sun added one new bank,
bringing the total number of banks to two at year end 1997. 1998 was a year of
significant bank development activity, with the addition of four banks. At year
end 1998, the consolidated group included a total of six banks, all less than
three years old at that date and four less than one year old.
 
     All of Sun's current banks are located in Arizona. The following table
lists each of the banks, their community and related summary information:
 
<TABLE>
<CAPTION>
                                                        SUN'S
                                                      OWNERSHIP
BANK                                     LOCATION     PERCENTAGE     DATE OPENED
----                                    ----------    ----------    -------------
<S>                                     <C>           <C>           <C>
Bank of Tucson........................  Tucson           100%       June 1996
Valley First Community Bank...........  Scottsdale        52%       June 1997
Camelback Community Bank..............  Phoenix           55%       May 1998
Southern Arizona Community Bank.......  Tucson            51%       August 1998
Mesa Bank.............................  Mesa              53%       October 1998
Sunrise Bank of Arizona...............  Phoenix           51%       December 1998
</TABLE>
 
     Each of the banks operates from a single location, without branches. The
banks are organized as state commercial banks and their deposits are insured by
the FDIC.
 
     Sun's plans for 1999 include the ongoing growth and development of its
existing banks and the formation of additional new banks. As of March 31, 1999,
applications were pending for two de novo banks, one in Arizona and one in
Nevada. See "Recent Developments."
 
     BANK DEVELOPMENT ACTIVITY OCCURS ON VARIOUS LEVELS.  In Arizona, Sun's
banks are direct subsidiaries, although Sun's ownership varies between 51% and
100%, as shown in the table above. In states other than Arizona, Sun intends to
form de novo banks through subsidiary bank holding companies which are
majority-owned by Sun.
                                       24
<PAGE>   27
 
     For example, in early 1999, Nevada Community Bancorp Limited was formed. In
April 1999, the Nevada company completed a private placement of $10 million of
common stock, of which Sun purchased $5.1 million. As a result, Sun owns 51% and
has majority voting control of the Nevada company. The Nevada company is
expected to purchase a majority interest in a de novo bank being formed in Las
Vegas later this year. The Nevada company may also purchase a majority interest
in one or two additional de novo banks in Nevada in 1999. It is expected that
Sun will provide back-room and related administrative support services to the
Nevada company and its future subsidiary banks.
 
     Sun provides back-room and administrative support services on a combined
basis for each of the banks. These services include:
 
     - data processing,
 
     - processing of checks and deposits,
 
     - accounting,
 
     - internal and external financial reporting,
 
     - asset/liability management,
 
     - internal audit,
 
     - credit administration and loan review,
 
     - regulatory compliance assistance,
 
     - budgeting,
 
     - strategic planning,
 
     - legal support services,
 
     - human resources and employee benefits administration, and
 
     - other administrative support services.
 
     These back-room and administrative support services do not involve a direct
interface with the bank customer. Sun is able to provide these services
economically and efficiently and at a lower cost to each bank than if they had
to contract for services separately through other providers. Sun also provides
these services on a transparent basis, maintaining the customer-contact
interface at the bank level.
 
     Sun also actively monitors and mentors its banks through the following
activities:
 
     - Reviewing monthly financial statements of each bank, including
       comparisons to budget and other goals or performance targets,
 
     - Actively participating in the development of detailed budgets for each
       bank,
 
     - Periodic internal auditing of transactions, balances, lending activity
       and deposit gathering,
 
     - Loan review procedures to monitor loan quality, origination procedures
       and identification of problem loans,
 
     - Asset/liability management assistance to monitor and enhance
       profitability, balance sheet management and net interest margins, and
 
     - Implementing a comprehensive risk management program which includes a
       risk matrix and assesses trends in business and financial risks at each
       bank.
 
                                       25
<PAGE>   28
 
     Sun currently anticipates using a similar bank development strategy in
other states, such as California. While other states are currently under
consideration by Sun's management, there are no specific plans at this time.
 
MARKETS
 
     Sun's banks currently are all located in the state of Arizona. Four are
located in or around Phoenix. Two are located in greater Tucson. The
metropolitan area of both Phoenix and Tucson are large and Sun's banks in those
communities do not compete with each other either due to having sufficient
geographic distance from each other or differing business emphasis.
 
     Phoenix is located within Maricopa County, one of the nation's fastest
growing economies. Pima County, which includes greater Tucson has reported
significant growth in recent years, but at a pace less than Maricopa County.
According to recent statistics, Maricopa County is one of the fastest growing
counties in the United States.
 
     Each of the banks offers a comprehensive range of banking products and
services, tailored to meet the needs of the bank customers. The banks' primary
customer emphasis is on entrepreneurs, professionals and other high net worth
individuals seeking personalized banking services. The banks emphasize
commercial loans, consistent with the banks' focus on business customers. The
banks also offer residential and other consumer loans. One bank, Sunrise Bank of
Arizona, emphasizes SBA lending (loans made through the Small Business
Administration, an agency of the US government).
 
     Each bank defines its own particular market. No map lines are drawn to
prohibit any of Sun's banks from pursuing customers in particular areas. Each
bank develops its own marketing effort, tailored to the strengths of bank
management, the bank's location and bank's board of directors.
 
     The banks offer trust services through Valley First Community Bank, which
is Sun's only bank currently having trust powers. Bank of Tucson has a
wholly-owned subsidiary, Sun Community Mortgage Company, which offers certain
types of residential mortgage loans, principally in greater Tucson.
 
     Each of the banks offers a wide range of deposit products, with emphasis on
business checking accounts and time deposits.
 
COMPETITION
 
     Each of Sun's banks operates in dynamic and highly competitive markets.
Sun's banks are small banks in large markets. The market share of Sun's banks,
individually and collectively, is not significant. Sun's banks are not expected
to achieve significant market share, rather, they are expected to remain small.
 
     Banking services, in general, are viewed as a commodity. This perception
seems to result from a retail orientation of larger, megabanks and other mass
marketers of financial services. Sun's banks do not have a retail focus, they
have a relationship focus. Sun's banks seek the profitable customer relationship
which has been displaced through mergers, mass marketing and an impersonal
approach to handling the customer. Sun believes that there is a large enough
group of profitable customers seeking a banking relationship within Sun's target
markets to enable small customer-focused banks to thrive in the shadows of
larger institutions. There is, however, little statistical evidence to support
this view.
 
                                       26
<PAGE>   29
 
     Competition for loans and deposits is intense in most markets. Larger banks
and nonbank financial institutions are aggressive in their efforts to obtain
banking business on the basis of price, delivery and service. While Sun's banks
frequently encounter competitive situations in both loans and deposits which are
price driven, Sun's banks emphasize their personalized service and ability to
meet the customers' needs, rather than emphasizing price. Competitive
opportunities based solely on price are not desirable to Sun's banks; the
emphasis is on customer relationships.
 
     Sun's banks' competitive advantages are:
 
     - local decision making,
 
     - quick response time,
 
     - service, and
 
     - follow-through.
 
     The competitors of Sun's banks vary from large to very large banks.
Additionally, there is a significant number of nonbank competitors, including
commercial finance companies, credit unions, credit card issuers, loan 'stores'
and numerous other companies and agencies which provide credit or investment
accounts or both. All of the competitors are significantly larger than Sun's
banks, individually and collectively, and have resources much larger than Sun or
its banks.
 
     The small size of Sun's banks limits the size of the loans which the banks
can make individually. All commercial banks are subject to legal lending limits
which are based primarily upon a bank's capital. Larger banks have significantly
larger legal lending limits than small banks, such as Sun's. While this can
adversely impact the banks' ability to compete on loan transactions, the banks
can make larger loans than their individual lending limit through having other
banks, which can be affiliated or unaffiliated banks, participate in making the
loan. Sun's banks emphasize commercial loans of $350,000 to $600,000
individually and larger loans through loan participations with other banks.
 
     Each of Sun's banks operates from a single location. Competitors operate
from multiple locations including branches and the Internet. The single
locations of Sun's banks are not perceived to be a limiting factor but are
perceived to be a competitive advantage because:
 
     - the customer seeks a banking relationship,
 
     - the bank's decision-makers are on site,
 
     - the bank makes house calls (courier service or other on site delivery),
       and
 
     - the bank's location is convenient.
 
EMPLOYEES
 
     At March 31, 1999, Sun and its banks employed a total of 110 full time
employees. None of the work force is unionized. Management believes that its
relationships with employees is good.
 
PROPERTIES
 
     As of March 31, 1999, none of Sun's or its banks' facilities are owned by
the company. Sun's and its banks' office facilities are leased under operating
leases with third parties except for an operating lease for a proposed bank
location. See "Recent
 
                                       27
<PAGE>   30
 
Developments." These lease agreements typically have a lease term of 10 years
plus renewal options. Sun believes that its facilities are adequate for its
operations, as now conducted. Additional information about Sun's rent expense
and lease commitments is included in the accompanying financial statements for
the periods ended December 31, 1998.
 
RELATIONSHIP WITH CAPITOL BANCORP LTD.
 
     Sun is 51% owned by Capitol Bancorp Ltd., a Michigan based, publicly traded
bank holding company. Capitol will purchase 51% of the shares sold in this
offering and will maintain its 51% ownership of Sun. Capitol is currently
required by the Federal Reserve Board to maintain not less than 51% voting
control of Sun. Accordingly, Sun has entered into an anti-dilution agreement
with Capitol which requires Sun to afford to Capitol the opportunity to maintain
Capitol's ownership percentage of Sun at 51%. Pursuant to Capitol's By-Laws,
Joseph D. Reid, as President of Capitol, has authority to vote Sun's shares held
by Capitol.
 
     Some of Sun's executive officers are also executive officers of Capitol.
Sun's Chairman and Chief Executive Officer, Joseph D. Reid, is also Chairman,
President and Chief Executive Officer of Capitol. Mr. Reid is also a significant
shareholder of Sun and Capitol. Lee W. Hendrickson is Senior Vice President and
Chief Financial Officer of Sun and Capitol. Cristin Reid English is Vice
President and General Counsel of Sun and Capitol.
 
     Sun and its banks operate separately from Capitol. Although Sun's and
Capitol's data processing systems are substantially similar, they are physically
separate in different states and are not interdependent.
 
     Some of Sun's employee benefit plans are either patterned after Capitol's
or are a part of a multiemployer plan with Capitol. Additionally, Sun and
Capitol jointly purchase some insurance, such as property, casualty, directors'
and officers' insurance.
 
     Michael L. Kasten, Sun's Vice Chairman, is also a director of Capitol.
Michael J. Devine, a director of Sun, is also a director of Oakland Commerce
Bank, a subsidiary of Capitol. Messrs. Kasten and Devine both serve as directors
of each of Sun's current bank subsidiaries.
 
     There are no agreements or understandings which prohibit or preclude
Capitol from engaging in business activities in competition with Sun or its
banks. Similarly, there are no agreements or understandings which prohibit or
preclude Sun from engaging in business activities in competition with Capitol or
its bank subsidiaries. See "Risk Factors -- There are potential conflicts of
interest relating to Capitol Bancorp Ltd."
 
LEGAL PROCEEDINGS
 
     Neither Sun nor any of its banks are a party to any legal proceeding or are
aware of any threatened litigation where Sun or its banks may be exposed to any
material loss.
 
                                       28
<PAGE>   31
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
     Selected consolidated financial data as of and for the periods ended
December 31, 1998 are derived from, and should be read in conjunction with,
Sun's Consolidated Financial Statements appearing elsewhere in this prospectus.
Selected consolidated financial data as of and for the three months ended March
31, 1999 and 1998 should also be read in conjunction with the Condensed
Consolidated Interim Financial Statements of Sun and the Notes thereto,
appearing elsewhere in this prospectus, and the information set forth under
"Capitalization" and "Management's Discussion and Analysis of Financial
Condition and Results of Operations." As described elsewhere in this prospectus,
because of the number of banks added in 1997 and 1998, Sun's historical
operating results are of limited relevance in evaluating Sun's historical
financial performance and predicting Sun's future operating results.
 
<TABLE>
<CAPTION>
                                   THREE MONTHS ENDED
                                       MARCH 31,         PERIODS ENDED DECEMBER 31,
                                   ------------------   -----------------------------
                                     1999      1998     1998(1)    1997(2)   1996(3)
                                   --------   -------   --------   -------   --------
                                      (UNAUDITED)
<S>                                <C>        <C>       <C>        <C>       <C>
SELECTED STATEMENT OF OPERATIONS
  DATA:
Interest income:
  Portfolio loans (including
     fees).......................  $  2,258   $   913   $  5,296   $ 1,845   $    114
  Loans held for resale..........        28                   30
  Taxable investment
     securities..................       200       185        763       736        186
  Federal funds sold.............       461       237      1,230       290         45
  Interest-bearing deposits with
     banks and other.............        29                   25                    9
                                   --------   -------   --------   -------   --------
          Total interest
             income..............     2,976     1,335      7,344     2,871        354
Interest expense:
  Demand deposits................       546       270      1,427       626         74
  Savings deposits...............         3         2          9         6
  Time deposits..................       337       123        844       282         41
  Other..........................                                                   8
                                   --------   -------   --------   -------   --------
          Total interest
             expense.............       886       395      2,280       914        123
                                   --------   -------   --------   -------   --------
          Net interest income....     2,090       940      5,064     1,957        231
Provision for loan losses........       209        41        379       268         49
                                   --------   -------   --------   -------   --------
          Net interest income
             after provision for
             loan losses.........     1,881       899      4,685     1,689        182
Noninterest income:
  Service charges on deposit
     accounts....................        70        38        224        87          8
  Other..........................        48        21        110        38          2
                                   --------   -------   --------   -------   --------
          Total noninterest
             income..............       118        59        334       125         10
</TABLE>
 
                                       29
<PAGE>   32
 
<TABLE>
<CAPTION>
                                   THREE MONTHS ENDED
                                       MARCH 31,         PERIODS ENDED DECEMBER 31,
                                   ------------------   -----------------------------
                                     1999      1998     1998(1)    1997(2)   1996(3)
                                   --------   -------   --------   -------   --------
                                      (UNAUDITED)
<S>                                <C>        <C>       <C>        <C>       <C>
Noninterest expense:
  Salaries and employee
     benefits....................     1,410       409      2,673     1,021        246
  Occupancy......................       241        76        546       179         24
  Equipment rent, depreciation
     and maintenance.............       247        89        557       173         34
  Deposit insurance premiums.....         2         1          6         1          1
  Other..........................       563       221      1,548       662        135
                                   --------   -------   --------   -------   --------
          Total noninterest
             expense.............     2,463       796      5,330     2,036        440
                                   --------   -------   --------   -------   --------
          Income (loss) before
             federal income
             taxes, minority
             interest and
             cumulative effect of
             change in accounting
             principle...........      (464)      162       (311)     (222)      (248)
Federal income taxes (benefit)...       (64)       75         29       (33)       (84)
                                   --------   -------   --------   -------   --------
  Net income (loss) before
     minority interest and
     cumulative effect of change
     in accounting principle.....      (400)       87       (340)     (189)      (164)
Minority interest in net losses
  of consolidated subsidiaries...       224        30        397       117         --
                                   --------   -------   --------   -------   --------
NET INCOME (LOSS) BEFORE
  CUMULATIVE EFFECT OF CHANGE IN
  ACCOUNTING PRINCIPLE...........      (176)      117         57       (72)      (164)
Change in accounting principle,
  net of income tax effect(4)....      (386)       --         --        --         --
                                   --------   -------   --------   -------   --------
NET INCOME (LOSS)................  $   (562)  $   117   $     57   $   (72)  $   (164)
                                   ========   =======   ========   =======   ========
  NET INCOME (LOSS) PER SHARE:
     Before cumulative effect of
       change in accounting
       principle
       Basic.....................  $  (0.05)  $  0.04   $   0.02   $ (0.05)  $  (0.14)
                                   ========   =======   ========   =======   ========
       Diluted...................  $  (0.05)  $  0.04   $   0.02   $ (0.05)  $  (0.14)
                                   ========   =======   ========   =======   ========
     After cumulative effect of
       change in accounting
       principle
       Basic.....................  $  (0.15)  $  0.04   $   0.02   $ (0.05)  $  (0.14)
                                   ========   =======   ========   =======   ========
       Diluted...................  $  (0.15)  $  0.04   $   0.02   $ (0.05)  $  (0.14)
                                   ========   =======   ========   =======   ========
     Cash dividends paid per
       share.....................        --        --         --        --         --
</TABLE>
 
                                       30
<PAGE>   33
 
<TABLE>
<CAPTION>
                                   THREE MONTHS ENDED
                                       MARCH 31,         PERIODS ENDED DECEMBER 31,
                                   ------------------   -----------------------------
                                     1999      1998     1998(1)    1997(2)   1996(3)
                                   --------   -------   --------   -------   --------
                                      (UNAUDITED)
<S>                                <C>        <C>       <C>        <C>       <C>
SELECTED BALANCE SHEET DATA (AT
  END OF PERIOD):
At end of period:
  Total assets...................  $159,121   $74,465   $135,578   $55,007   $ 17,276
  Portfolio loans................    86,167    35,655     68,080    31,236      4,850
  Nonperforming loans............        --        --         --        --         --
  Deposits.......................   122,613    55,322     98,782    42,899     12,021
  Debt obligations...............        --        --         --        --         --
  Minority interests in
     consolidated subsidiaries...     9,280     1,980      9,411     2,010         --
  Shareholders' equity...........    26,128    16,803     26,627     9,690      5,189
                                   --------   -------   --------   -------   --------
  Total capitalization...........    35,408    18,783     36,038    11,700      5,189
  Book value per common
     share(5)....................      6.78      5.90       6.92      5.10       4.51
  Number of banks................         6         2          6         2          1
FINANCIAL RATIOS:
  Net interest margin............      4.88%     4.71%      4.51%     4.52%      1.33%
  Allowance for loan losses as
     percentage of portfolio
     loans.......................      1.05      1.00       1.02      1.01       1.01
  Total capitalization as a
     percentage of total
     assets(6)...................     22.25     25.22      26.58     21.27      30.04
  Return on average assets.......      n.m.      n.m.       n.m.      n.m.       n.m.
  Return on average equity.......      n.m.      n.m.       n.m.      n.m.       n.m.
</TABLE>
 
-------------------------
 
Notes: n.m. -- Not meaningful for period presented.
 
(1) Includes Camelback Community Bank (effective May 1998), Southern Arizona
    Community Bank (effective August 1998), Mesa Bank (effective October 1998)
    and Sunrise Bank of Arizona (effective December 1998).
 
(2) Includes Valley First Community Bank (effective June 1997). Sun acquired
    Bank of Tucson in a share exchange transaction effective May 1997.
 
(3) Period ended December 31, 1996 consisted only of Bank of Tucson which
    commenced operations effective June 1996.
 
(4) Cumulative effect of accounting change (net of income tax benefit) relates
    to implementation of new accounting standard requiring write-off of
    unamortized capitalized start-up costs effective January 1, 1999.
 
(5) Excludes outstanding stock options.
 
(6) Includes stockholders' equity and minority interest in consolidated
    subsidiaries.
 
                                       31
<PAGE>   34
 
   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
                                   OPERATIONS
                     PERIODS ENDED MARCH 31, 1999 AND 1998
 
     This narrative discusses Sun's financial condition and results of
operations and should be read in conjunction with the Consolidated Interim
Financial Statements. This discussion also includes historical financial
information as well as some statements which are "forward-looking." Such
forward-looking statements are subject to a variety of future events and
uncertainties. Readers are cautioned not to place significant reliance on such
forward-looking statements. Past trends and results may not be reliable
indicators of future results or trends. A number of important factors, which are
outside of Sun's or management's control, could affect actual future results and
cause actual future results to differ materially from those in the
forward-looking statements.
 
OVERVIEW
 
     The interim periods for the three months ended March 31, 1999 and 1998
differ significantly. The 1998 period included two banks, Bank of Tucson and
Valley First Community Bank. The 1999 period includes those two banks plus four
more banks which were formed after March 31, 1998 (Camelback Community Bank,
Southern Arizona Community Bank, Mesa Bank, and Sunrise Bank of Arizona).
 
     At March 31, 1999, consolidated total assets were $159.1 million, a
significant increase from the beginning of the year level of $135.6 million and
more than double the approximate $74.5 million at March 31, 1998.
 
     The 1999 interim period included a net loss from operations, before the
cumulative effect of an accounting change, of approximately $176,000, which was
the predictable result of four of Sun's banks being less than one year old and
incurring their expected early-period losses. In the three months ended March
31, 1998, net income approximated $117,000.
 
CHANGES IN FINANCIAL CONDITION
 
     As indicated previously, total assets were $159.1 million at March 31,
1999. Consolidated total assets increased $23.5 million during the three months
ended March 31, 1999. Such asset growth was 17% for that period or an annualized
growth rate of 69%, based on consolidated assets of $135.6 million at the
beginning of the year.
 
     The change in total assets was the result of growth at each of Sun's six
banks.
 
     The allowance for loan losses, as a percentage of total loans, was 1.02% at
both March 31, 1999, and 1998. Sun's de novo banks, as a condition of charter
approval, are required to maintain an allowance for loan losses of not less than
1% for their first few years of operation. The allowance for loan losses is
maintained at a level believed to be adequate by management to absorb potential
losses in the portfolio.
 
     Portfolio loans increased $18.1 million during the three months ended March
31, 1999, an increase of 26.6% from the beginning of the year. The annualized
rate of growth in portfolio loans exceeded 100%. Most of the loan growth
occurred in commercial loans, which comprised 90% of total loans at March 31,
1999, relatively unchanged from the percentage at the beginning of the year. The
growth and concentration in commercial loans is consistent with the banks'
emphasis on fulfilling the credit needs of entrepreneurs,
 
                                       32
<PAGE>   35
 
professionals, commercial real estate developers and other small, local
businesses within their communities.
 
     Cash and cash equivalents increased $2.6 million in the first quarter of
1999. Total cash and cash equivalents were $50.9 million at March 31, 1999, or
32.0% of total assets at March 31, 1999.
 
     Total deposits were $122.6 million at March 31, 1999, compared to $98.8
million at the beginning of the year. The ratio of non-interest bearing deposits
to total deposits decreased from 28.4% at the beginning of the year to 23.9% at
March 31, 1999. The change in this ratio is the result of increases in time
deposits at the banks.
 
CONSOLIDATED INTERIM RESULTS OF OPERATION
 
     Total interest income was $3.0 million for the three months ended March 31,
1999, compared to $1.3 million for the corresponding 1998 period, an increase of
123%. Similar increases occurred in Sun's other categories of operating results,
including interest expense, provisions for loan losses, net interest income and
non-interest expenses.
 
     Consolidated operations resulted in a net loss of approximately $176,000
for the three month 1999 period, before the cumulative effect of a change in
accounting principle.
 
     In 1998, the American Institute of CPAs issued a Statement of Position
which changes the accounting for costs of start-up activities. It requires
start-up and organizational costs to be charged to expense when incurred. In the
circumstances of Sun and its banks, this new accounting standard applies to
previously capitalized pre-opening and other start-up costs of its banks which,
net of amortization, were $1,149,000 at December 31, 1998, and classified as a
component of other assets at that date. Implementation of this standard is
reflected as a cumulative effect adjustment (net of income tax effect) of
$386,000 charged to operations effective January 1, 1999.
 
LIQUIDITY, CAPITAL RESOURCES, AND CAPITAL ADEQUACY
 
     As previously discussed, Sun continued to maintain significant consolidated
liquidity in the form of cash and cash equivalents at December 31, 1998. In
addition to cash and cash equivalents, Sun's banks have additional liquidity in
investment securities available for sale, which approximated $14.4 million at
March 31, 1999, an increase of approximately $1.5 million from the December 31,
1998 level of $12.9 million.
 
     Stockholders' equity approximated $26.1 million at March 31, 1999, or 16.4%
of consolidated total assets.
 
     Sun's consolidated financial statements for the period ended December 31,
1998, and the accompanying narrative regarding financial condition and results
of operations, include a discussion of capital adequacy and various matters
relating to current regulatory capital requirements. That information is not
repeated here and readers should refer to those disclosures and commentary. In
the opinion of management, all of Sun's affiliated banks meet the regulatory
criteria to be classified as "well capitalized" at March 31, 1999.
 
TRENDS AFFECTING INTERIM OPERATIONS
 
     The accompanying "Management's Discussion and Analysis of Financial
Condition and Results of Operations" for the periods ended December 31, 1998,
1997 and 1996 includes a thorough discussion of trends affecting Sun's
operations and the operations of its banks. That information is not repeated
here, and readers should refer to that narrative.
 
                                       33
<PAGE>   36
 
     No significant changes in interest rates occurred during the three months
ended March 31, 1999, as compared with interest rates in effect during the
fourth and final quarter of calendar 1998. Competition for deposits has
continued to be intense during early 1999 as is the case with competition for
new loans.
 
YEAR 2000
 
     The accompanying "Management's Discussion and Analysis of Financial
Condition and Results of Operations" for the periods ended December 31, 1998,
1997 and 1996 includes a thorough discussion of Year 2000 issues and its
potential impact on Sun and its banks. Readers should refer to that discussion.
 
     During the three months ended March 31, 1999, management continued its
efforts to address the Year 2000 issue, in terms of testing, remediation of
systems and development of contingency plans continued.
 
     The efforts of Sun and its banks on this issue are significant and
on-going. Even with the extensive testing methodologies implemented by Sun, its
banks and other financial institutions, until the century date change actually
occurs and it is determined that such systems properly process data after that
date, there can be no assurance that such systems will function properly,
despite adequate and appropriate planning, testing and remediation efforts.
 
     Sun and its banks, in their on-going effort to competently address evolving
Year 2000 issues, will continue to devote both human and financial resources to
this issue.
 
NEW ACCOUNTING STANDARDS
 
     As previously mentioned, a new accounting standard was implemented
effective January 1, 1999, which required the write off of previously
capitalized start up and organizational costs.
 
     The accompanying "Management's Discussion and Analysis of Financial
Condition and Results of Operations" for the periods ended December 31, 1998,
1997 and 1996 includes a discussion of new accounting standards adopted in 1998
and certain other new accounting standards which will become effective in 1999.
Readers should refer to that discussion for additional information.
 
     A variety of proposed or otherwise potential accounting standards are
currently under study by standard-setting organizations and various regulatory
agencies. Because of the tentative and preliminary nature of those proposed
standards, management has not determined whether implementation of such proposed
standards would be material to Sun's financial statements in future periods.
 
                                       34
<PAGE>   37
 
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                           AND RESULTS OF OPERATIONS
                 PERIODS ENDED DECEMBER 31, 1998, 1997 AND 1996
 
     This narrative discusses Sun's financial condition and results of
operations and should be read in conjunction with the Consolidated Financial
Statements. This discussion also includes historical financial information as
well as some statements which are "forward-looking." Such forward-looking
statements are subject to a variety of future events and uncertainties. Readers
are cautioned not to place significant reliance on such forward-looking
statements. Past trends and results may not be reliable indicators of future
results or trends. A number of important factors, which are outside of Sun's or
management's control, could affect actual future results and cause actual future
results to differ materially from those in the forward-looking statements.
 
OVERVIEW
 
     1998 was another significant year in Sun's evolution. Sun completed 1998
with six operating banks, after beginning the year with two. Total consolidated
assets were $135.6 million at December 31, 1998, compared to $55.0 million at
year-end 1997.
 
     1998 also marked Sun's first period of profitability with net income of
$57,000, compared with a loss of $72,000 in 1997.
 
     The 1996 period referred to herein relates to Bank of Tucson which was
formed in June 1996. Hence, the 1996 period was less than a full year. Bank of
Tucson became a wholly-owned subsidiary of Sun in May 1997 in a share exchange
transaction.
 
     Under current accounting rules, entities which are more than 50% owned by
another are consolidated or combined for financial reporting purposes. This
means that all of the banks' assets are included in Sun's consolidated balance
sheet, regardless of whether Sun owns 51% or 100%. Sun's net income, however,
will only include its subsidiaries' net income or net loss to the extent of its
ownership percentage. This means that when a de novo bank incurs early startup
losses, Sun will only count that loss to the extent of its ownership percentage.
Conversely, if that de novo bank generates income, Sun will only count that
income based on its ownership percentage. Based on Sun's experience, it
typically requires a full year of operation before a de novo bank becomes
profitable.
 
CHANGES IN CONSOLIDATED GROUP
 
     Each of the periods of 1996, 1997 and 1998 have been significant periods of
evolution for Sun. Through the development of de novo (newly formed) banks, Sun
has actively pursued bank development in addition to managing its investments in
its previously existing bank subsidiaries.
 
     Sun is a uniquely structured affiliation of community banks. Each bank has
only one location, and is focused on meeting the banking needs of entrepreneurs,
professionals and other individuals seeking individually-tailored service within
its own market. Each bank has full decision-making authority in structuring and
approving loans and the delivery of other banking services. Each bank is managed
by an on-site president and management team under the direction of its local
board of directors, which is comprised of business leaders from that bank's
community.
 
     Sun's de novo community banking philosophy involves the formation and
operation of small, customer-focused, community banks. These banks have been
organized on a
 
                                       35
<PAGE>   38
 
"partnership" basis through which local investors purchase up to 49% of the de
novo bank's common stock. Ideally, more than 100 local business leaders and
other community individuals become shareholders in those community banks. This
approach also serves to aid in the formation of the initial customer base for
those de novo banks, since those community shareholders typically open accounts
at their new community bank.
 
     At year-end 1998, Sun's affiliated banks include the following:
 
<TABLE>
<CAPTION>
                                                            YEAR
                                                          FORMED OR     ARIZONA
                                                          ACQUIRED     COMMUNITY
                                                          ---------    ----------
<S>                                                       <C>          <C>
Bank of Tucson..........................................    1996       Tucson
Valley First Community Bank.............................    1997       Scottsdale
Camelback Community Bank................................    1998       Phoenix
Southern Arizona Community Bank.........................    1998       Tucson
Mesa Bank...............................................    1998       Mesa
Sunrise Bank of Arizona.................................    1998       Phoenix
</TABLE>
 
CHANGES IN CONSOLIDATED FINANCIAL POSITION
 
     As previously mentioned, total assets were $135.6 million at December 31,
1998. Assets increased in 1998 approximately $80.6 million compared to
consolidated total assets of $55.0 million at December 31, 1997.
 
     A significant portion of the asset growth in 1998 ($34 million) was the
result of banks which were newly formed during the year. Bank of Tucson, Sun's
first banking subsidiary, increased its assets about 53% or $22.3 million in
1998. Valley First Community Bank, Sun's second bank subsidiary (formed in
mid-1997), increased its assets nearly three-fold in 1998 or $23.8 million.
 
     At year-end 1998, total portfolio loans were $68.1 million or about 50% of
total assets. Portfolio loans increased more than 100% in 1998, from $31.2
million.
 
     Commercial loans comprised nearly 90% of total portfolio loans at year-end
1998 and 84% of total portfolio loans at December 31, 1997. The growth and
concentration in commercial loans is consistent with the banks' emphasis on
fulfilling the credit needs of entrepreneurs, professionals, commercial real
estate developers and other small, local businesses within their communities.
 
     Cash and cash equivalents also increased significantly in 1998 from $10.1
million at the beginning of the year to $48.4 million at December 31, 1998. Cash
and cash equivalents approximated 36% of total assets at year-end 1998, which is
a higher percentage than year-end 1997 (18%). This increase, as a percentage, is
a predictable result from recently formed de novo banks which generally achieve
deposit growth at a rate faster than the rate at which funds can be deployed
into loans.
 
     Most of the asset growth in 1998 was funded by increases in deposits, which
grew more than 100% from $42.9 million to $98.8 million at December 31, 1998.
Most of the $55.9 million deposit growth was deployed into loans ($36.8 million)
and interest-bearing cash equivalents (federal funds sold).
 
                                       36
<PAGE>   39
 
     A comparative summary of the individual banks' total portfolio loans,
allowance for loan losses, nonperforming loans and loan loss allowance ratio
follows:
 
<TABLE>
<CAPTION>
                                                                               ALLOWANCE AS A
                                                 ALLOWANCE                      PERCENTAGE OF
                                  TOTAL             FOR       NONPERFORMING         TOTAL
                             PORTFOLIO LOANS    LOAN LOSSES       LOANS        PORTFOLIO LOANS
                            -----------------   -----------   --------------   ---------------
                             1998      1997     1998   1997   1998     1997     1998     1997
                            -------   -------   ----   ----   -----    -----   ------   ------
<S>                         <C>       <C>       <C>    <C>    <C>      <C>     <C>      <C>
Bank of Tucson............  $37,899   $23,406   $392   $235   $ --     $ --     1.03%    1.00%
Valley First Community
  Bank....................   20,879     7,830    209     82     --       --     1.00     1.05
Camelback Community Bank..    3,246       n/a     33    n/a     --      n/a     1.02      n/a
Southern Arizona Community
  Bank....................    2,925       n/a     30    n/a     --      n/a     1.03      n/a
Mesa Bank.................    1,386       n/a     14    n/a     --      n/a     1.01      n/a
Sunrise Bank of Arizona...    1,745       n/a     18    n/a     --      n/a     1.03      n/a
                            -------   -------   ----   ----   ----     ----     ----     ----
Consolidated..............  $68,080   $31,236   $696   $317   $-0-     $-0-     1.02%    1.01%
                            =======   =======   ====   ====   ====     ====     ====     ====
</TABLE>
 
-------------------------
n/a -- not applicable
 
     The allowance for loan losses, as a percentage of portfolio loans has
approximated 1% for the periods presented. De novo banks, as a condition of
charter approval, are generally required to maintain an allowance for loan
losses of not less than 1% for their first few years of operation, which is not
materially different than requirements under generally accepted accounting
principles. More mature banks typically maintain substantially higher loan loss
allowances, on a percentage basis. The lower allowance ratio for de novo banks
is appropriate in the context of their young and, hence, unseasoned loan
portfolios. While the lower allowance ratio is appropriate in early periods for
de novo banks, ultimately it is expected that they will increase their allowance
ratios as they mature and their loan portfolios become more seasoned.
 
     The allowance for loan losses is maintained at a level believed adequate by
management to absorb potential losses in the portfolio. A number of elements are
considered in management's determination of the adequacy of the allowance which
includes evaluation of recent loss experience (minimal thus far), current
economic conditions, volume, amount and composition of the portfolio, loan
commitments outstanding and other factors.
 
     The consolidated balance sheets as of December 31, 1998 and 1997 include
the total assets of each of Sun's bank subsidiaries, regardless of whether those
banks are wholly-owned (in the case of Bank of Tucson) or are less than 100%,
but majority, owned (as in the case of Sun's five other bank subsidiaries); this
consolidation treatment is required under generally accepted accounting
principles. The consolidation requirements for assets is different than the
results of operations inasmuch as consolidated net income includes only Sun's
pro rata share of its percentage ownership in the bank subsidiaries.
 
CONSOLIDATED RESULTS OF OPERATIONS
 
     As is the case with changes in Sun's consolidated financial position, Sun's
consolidated results of operations have changed significantly during the periods
presented, primarily due to the combined effects of the development of its bank
subsidiaries and the periods and dates in which those bank subsidiaries have
been added.
                                       37
<PAGE>   40
 
     Revenue growth and net interest income generally lag behind the rate of
asset growth. This is because asset growth is funded primarily through increases
in interest-bearing deposits which are not immediately deployed into the
highest-yielding asset category -- loans. Additionally, de novo banks, because
of their start-up nature, first generate deposits, often at a pace faster than
the rate of deployment into loans.
 
     De novo banks, by their nature, are expected to incur operating losses
during their early periods of operations. Accordingly, banks formed in 1997 and
1998 did not contribute positively to consolidated 1998 earnings.
 
     It is, however, notable that Bank of Tucson (formed in 1996) reported
strong 1998 earnings of $776,000 or a rate of return of 1.25% on average assets
even though the bank was eighteen months old at the beginning of the year.
Further, Valley First Community Bank, formed in June 1997, reported its first
quarterly period of profitability in the fourth calendar quarter of 1998 and
reported a modest net operating loss of $81,000 in 1998. A comparative summary
of assets and results of operations follows (dollar amounts in thousands):
 
<TABLE>
<CAPTION>
                                    TOTAL ASSETS
                                   AT DECEMBER 31          NET INCOME (LOSS)
                                 -------------------    -----------------------
                                   1998       1997      1998     1997     1996
                                 --------    -------    -----    -----    -----
<S>                              <C>         <C>        <C>      <C>      <C>
Bank of Tucson.................  $ 63,860    $41,605    $ 776    $ 150    $(164)
Camelback Community Bank.......    10,017        n/a     (370)     n/a      n/a
Mesa Bank......................     6,192        n/a     (118)     n/a      n/a
Southern Arizona Community
  Bank.........................    12,395        n/a     (252)     n/a      n/a
Sunrise Bank of Arizona........     5,411        n/a      (26)     n/a      n/a
Valley First Community Bank....    36,588     12,826      (81)    (245)     n/a
Other, net.....................     1,115        576      128       23       --
                                 --------    -------    -----    -----    -----
Consolidated...................  $135,578    $55,007    $  57    $ (72)   $(164)
                                 ========    =======    =====    =====    =====
n/a -- not applicable
</TABLE>
 
     Total interest income was $354,000 in 1996, $2.9 million in 1997 and $7.3
million in 1998. Interest expense for the periods similarly increased from
$123,000 to $915,000 to $2.3 million, respectively. Net interest income,
accordingly, increased from $231,000 in 1996 to nearly $2 million in 1997 and $5
million in 1998. These changes are the result of the number of banks included
within the consolidated group as well as the ongoing development of banks formed
before 1998.
 
     Total noninterest income has similarly increased during the periods
presented from about $10,000 in 1996 to $125,000 in 1997 and $334,000 in 1998.
 
     Total noninterest expenses have correspondingly increased from $440,000 in
1996 to $1.9 million in 1997 and $4.9 million in 1998. Increases in each of the
categories during those periods (primarily salaries and employee benefits,
occupancy and various other noninterest expenses) correspond to the increased
number of bank subsidiaries during the periods presented as well as necessary
increases in staffing in concert with asset growth.
 
     Overall, Sun achieved modest profitability of $57,000 in 1998 after
incurring losses of $72,000 in 1997 and $164,000 in 1996. The 1996 and 1997
operating losses were due to expected start-up period losses of de novo banks.
 
                                       38
<PAGE>   41
 
LIQUIDITY, CAPITAL RESOURCES AND CAPITAL ADEQUACY
 
     At December 31, 1998, Sun maintained significant liquidity in the form of
cash and cash equivalents, as previously discussed. In addition to cash and cash
equivalents, significant liquidity exists in the form of investment securities
available for sale ($12.9 million at December 31, 1998 and $11.5 million at
December 31, 1997). Together, total liquidity (cash, cash equivalents, loans
held for resale and investment securities available for sale) approximated $62.5
million or 46% of total assets at December 31, 1998 and $21.7 million or 39.4%
of total assets at December 31, 1997.
 
     Management has designated all of Sun's current investment securities as
being "available for sale" due to the longer-term strategy of the banks'
striving to maintain higher loan-to-deposit ratios to maximize earnings.
Accordingly, such investment securities available for sale are carried at market
value with the market value adjustment being reflected as an element of
stockholders' equity (net of related tax effect) on the consolidated balance
sheet (also described as accumulated other comprehensive income).
 
     As discussed previously, the primary funding source for asset growth is
deposits. Each of the banks offers a full array of deposit products. The banks
emphasize time deposits by offering attractive rates in comparison to
competitors, when needed, to fund loan demand. Time deposits approximated $23.8
million or 24% of total deposits at December 31, 1998 ($8.7 million or 20% at
December 31, 1997).
 
     The banks' also emphasize noninterest-bearing demand deposits (checking
accounts) which amounted to $28 million at December 31, 1998 or 28% of total
deposits ($9.6 million or 22% of total deposits at December 31, 1997). The level
of checking account deposits is important in reducing the banks' overall cost of
funds.
 
     Deposits at each of the banks are insured up to the maximum amount covered
by FDIC insurance. As noted previously, Sun owns between 51% and 100% of its
consolidated affiliated banks. For banks which are not wholly-owned by Sun,
appropriate accounting recognition is given to applicable minority interests in
those subsidiaries on Sun's consolidated balance sheet. Minority interests in
consolidated subsidiaries approximated $9.1 million at December 31, 1998 and $2
million in 1997. Sun's strategy of majority ownership (less than 100%) for its
de novo expansion has generated significant resources provided by minority
interests in those entities.
 
     Stockholders' equity approximated $26.6 million or nearly 20% of total
assets at December 31, 1998. Stockholders' equity increased significantly in
1998 due to two private placement stock offerings, one in January 1998 and one
in December 1998.
 
     In September 1998, Sun issued a three-for-one stock split. All share and
per share information appearing in the consolidated financial statements has
been retroactively restated to reflect the stock split as if it had occurred at
the beginning of the periods presented.
 
     During the periods presented, Sun has not paid cash dividends. Payment of
cash dividends in future periods is subject to a number of significant
variables, including retained earnings available for dividends (if any) and
regulatory capital requirements, in addition to liquidity, cash adequacy and
other factors. Accordingly, there can be no assurance with respect to payment of
cash dividends in the future.
 
     Sun and each of its affiliated banks are subject to very complex banking
rules and regulations relating to capital adequacy. Key ratios of leverage, Tier
I capital and Tier II capital (as those terms are currently defined in the
regulatory guidance) and corresponding
 
                                       39
<PAGE>   42
 
ratios in relation to total assets and risk-weighted assets are set forth in
Note M to the Consolidated Financial Statements.
 
     Under the current regulatory framework, banks are categorized as "well
capitalized," "adequately capitalized" or "inadequately capitalized." Banks
which fall into the "inadequately capitalized" category are subject to the
"prompt corrective action" provisions of the FDIC Improvement Act, which can
result in significant regulatory agency intervention and other adverse action.
Although it is permissible to maintain capital adequacy at the "adequately
capitalized" level, Sun's management currently intends to maintain the capital
of each affiliated bank within the "well capitalized" category. Classification
as a "well capitalized" institution enables such institutions to enjoy the
lowest-cost deposit insurance assessment and less restrictive regulatory
intervention in relation to certain banking business activities.
 
     De novo banks, as a condition of charter approval, are required to maintain
certain higher capital ratios. Generally, such banks are required to maintain a
Tier I capital assets ratio of not less than 8% for the first three years of
operation in addition to maintaining the previously-discussed allowance for loan
losses of not less than 1% of portfolio loans. Such capital ratio requirements,
in the opinion of management, do not constrict the operations of de novo banks
during the periods that the ratios are required and, consistent with
management's effort to maintain capital adequacy at each affiliated bank, Sun
will infuse such amounts of capital as are necessary to maintain compliance with
those capital requirements. As of December 31, 1998, each of Sun's bank
subsidiaries are subject to the 8% capital to assets ratio.
 
     In the opinion of management, all of Sun's affiliated banks meet the
criteria to be classified as "well capitalized" at December 31, 1998.
 
TRENDS AFFECTING OPERATIONS
 
     The most significant trends which can impact the financial condition and
results of operations of financial institutions are changes in market rates of
interest and changes in general economic conditions.
 
     Changes in interest rates, either up or down, can have an impact on net
interest income (plus or minus), depending on the direction and timing of such
changes. At any point in time, there is a difference between interest
rate-sensitive assets and interest rate-sensitive liabilities. That difference,
from a timing perspective, arises because it is practically impossible to
maintain a perfectly matched relationship between rate-sensitive assets and
liabilities. This means that when interest rates change, the timing of the
effect of such interest rate changes can differ between their effect on assets
and liabilities. The difference between interest rate-sensitive assets and
interest rate-sensitive liabilities is characterized as a "gap" which is
quantified by the distribution of rate-sensitive amounts within various time
periods in which they reprice or mature. The following table
 
                                       40
<PAGE>   43
 
summarizes Sun's consolidated financial position in relation to "gap" at
December 31, 1998 (dollar amounts in thousands):
 
<TABLE>
<CAPTION>
                                          INTEREST RATE SENSITIVITY
                                    --------------------------------------
                                    0 TO 3    4 TO 12   1 TO 5      OVER
                                    MONTHS    MONTHS     YEARS    5 YEARS     TOTAL
                                    -------   -------   -------   --------   --------
<S>                                 <C>       <C>       <C>       <C>        <C>
ASSETS
  Federal funds sold..............  $37,600        --        --         --   $ 37,600
  Interest-bearing deposits
     with banks...................       --   $   850        --   $      9        859
  Loans held for resale...........    1,276        --        --         --      1,276
  Investment securities...........    6,480     5,426   $ 1,000         17     12,923
  Portfolio loans:
     Commercial...................   47,036     2,418     8,490      2,422     60,366
     Real estate mortgage.........    4,371                                     4,371
     Installment..................    1,541       423     1,086        292      3,342
  Non-earning assets and other....                                  14,548     14,548
                                    -------   -------   -------   --------   --------
          Total Assets............  $98,304   $ 9,117   $10,576   $ 17,288   $135,285
                                    =======   =======   =======   ========   ========
LIABILITIES AND STOCKHOLDERS'
  EQUITY
  Interest-bearing deposits:
     Time deposits over
       $100,000...................  $ 2,273   $ 4,213   $ 1,758         --   $  8,244
     Time deposits under
       $100,000...................    3,176     7,356     4,987         --     15,519
     All other interest-bearing
       deposits...................   46,986        --        --         --     46,986
                                    -------   -------   -------   --------   --------
  Total interest-bearing
     deposits.....................   52,435    11,569     6,745                70,749
  Debt obligations
  Non-interest bearing
     liabilities..................       --        --        --   $ 28,791     28,791
  Minority interest in
     consolidated subsidiaries....       --        --        --         --      9,118
  Stockholders' equity............       --        --        --         --     26,627
                                    -------   -------   -------   --------   --------
          Total Liabilities and
             Stockholders'
             Equity...............  $52,435   $11,569   $ 6,745   $ 28,791   $135,285
                                    =======   =======   =======   ========   ========
Interest rate sensitive period
  gap.............................  $45,869   $(2,452)  $ 3,831   $(11,503)
Interest rate sensitive
  cumulative gap..................  $45,869   $43,417   $47,248   $ 35,745
Period rate sensitive
  assets/period rate sensitive
  liabilities.....................     1.87      0.79      1.57       0.60
Cumulative rate sensitive assets/
  cumulative rate sensitive
  liabilities.....................     1.87      1.68      1.67       1.36
Cumulative gap to total assets....    33.91%    32.09%    34.92%     26.42%
</TABLE>
 
                                       41
<PAGE>   44
 
     The "gap" changes daily based upon changes in the underlying assets and
liabilities at each of Sun's banks. Analyzing exposure to interest rate risk is
prone to imprecision because the "gap" is constantly changing, the "gap" differs
at each of the banks, and it is difficult to predict the timing, amount and
direction of future changes in market interest rates and the corresponding
effect on customer behavior.
 
     Sun's banks endeavor to manage and monitor interest rate risk in concert
with market conditions. Management strives to maintain a balanced position of
interest rate-sensitive assets and liabilities. Sun and its banks have not
engaged in speculative positions through the use of derivatives in anticipation
of interest rate movements. In these most recent periods of lower interest
rates, the banks emphasize variable rate loans and time deposits to the extent
possible in a competitive environment; however, competitive influences often
result in making fixed rate loans, although the banks seek to limit the duration
of such loans. Similarly, low interest rates generally make competition more
intense for deposits, since loan demand will typically increase during periods
of lower rates and, accordingly, result in higher interest costs on deposits,
adversely impacting interest margins. Future interest rates and the impact on
earnings are difficult to predict. In addition to interest rate risk relating to
Sun's interest-bearing assets and liabilities, changes in interest rates also
can impact future transaction volume of loans and deposits at the banks. For
activities which are influenced by levels of interest rates for transaction
volume (for example, origination of residential mortgage loans), pricing margins
and demand can become impacted significantly by changes in interest rates.
 
     As a means of monitoring and managing exposure to interest rate risk,
management uses a computerized simulation model which, at a static point in
time, is intended to estimate pro forma effects of changes in interest rates.
Using the consolidated "gap" table information above and Sun's simulation model,
the following table illustrates, on a consolidated basis, changes which would
occur in annual levels of interest income, interest expense and net interest
income (in thousands) assuming one hundred and two hundred basis point ("bp")
increases and decreases in interest rates:
 
<TABLE>
<CAPTION>
                            PRO FORMA
                            ASSUMING        PRO FORMA EFFECT OF         PRO FORMA EFFECT OF
                            NO CHANGE     INTEREST RATE INCREASES     INTEREST RATE DECREASES
                           IN INTEREST    ------------------------    -----------------------
                              RATES        +100 BP       +200 BP       -100 BP       -200 BP
                           -----------    ----------    ----------    ---------     ---------
<S>                        <C>            <C>           <C>           <C>           <C>
Interest income..........    $18,082        $19,539       $20,996      $16,626       $15,169
Interest expense.........      5,659          6,700         7,740        4,619         3,578
                             -------        -------       -------      -------       -------
  Net interest income....    $12,423        $12,839       $13,256      $12,007       $11,591
                             =======        =======       =======      =======       =======
</TABLE>
 
     The pro forma analysis above is intended to quantify theoretical changes in
interest income based on stated assumptions. Such pro forma analysis excludes
the effect of numerous other variables such as borrowers' ability to repay loans
or the ability of banks to obtain deposits in a radically changed interest-rate
environment and how management would revise its asset and liability management
priorities in concert with rate changes.
 
     Simulation modeling techniques are inherently flawed and inaccurate due to
the number of variables and due to the fact that the actual effects of changes
in interest rates are subject to some variables (for example, customer behavior)
which simulation models cannot effectively predict. Therefore, actual future
results will differ from pro forma simulation model analyses and such
differences may be significant.
 
                                       42
<PAGE>   45
 
     General economic conditions also have a significant impact on financial
institution results of operations and financial condition. Economic conditions
nationally and in the banks' local environments have remained relatively stable
and positive. Local economic conditions, and to some extent national economic
conditions, have a significant impact on levels of loan demand as well as the
ability of borrowers to repay loans and the availability of funds for customers
to make deposits. Throughout 1998, 1997 and 1996, the U.S. economy has continued
to produce the longest peacetime economic expansion in history. While worldwide
economic conditions are unstable, the duration of the current economic expansion
period in the United States is questionable. Additionally, issues regarding the
century date change and its impact on financial institutions, their customers
and the economy in general are uncertain.
 
     Continuing consolidation of the banking industry on a national basis, and
in the respective markets of Sun's banks, has presented opportunities for
growth. As a result of consolidation of the banking industry, coupled with the
closure of branch locations by larger institutions and conversion of customer
relationships into perceived 'commodities' by the larger banks, many customer
relationships have been displaced, generating opportunities for development by
Sun's banks. For retail customers, banking services have become a commodity in
an environment that is dominated by larger mega-bank or mass-merchandising
institutions. For the professional, entrepreneur and other customers seeking a
more service-oriented, customized banking relationship, Sun's banks fill that
need through their focus on single-location banks with full, local
decision-making authority. In those markets in which Sun's affiliated banks are
located, the banks focus on service delivery and keeping the bank's size at an
appropriate level; only a modest market share of deposits and loan activity is
necessary to achieve profitability and reasonable earnings performance.
 
     The ongoing banking consolidation environment further presents
opportunities for expansion of de novo banking activities in numerous markets.
While it is difficult to predict specific locations and markets for future de
novo banking development, plans are underway in early 1999 for additional de
novo banks in Arizona and elsewhere in the southwestern United States.
 
     As previously discussed, de novo banks generally incur operating losses
during their early periods of operations. Management expects Sun's
recently-formed de novo banks to detract from consolidated earnings performance
and additional de novo banks formed in 1999 and beyond will similarly adversely
impact short-term profitability. On a consolidated basis, such operating losses
reduce net income by the pro rata share of Sun's ownership percentage in those
de novo banks. When de novo banks become profitable, their operating results
will contribute to consolidated earnings to the extent of Sun's ownership
percentage.
 
     Commercial banks continue to be subject to significant regulatory
requirements which impact current and future operations. In addition to the
extent of regulatory interaction with financial institutions, extensive rules
and regulations governing lending activities, deposit gathering and capital
adequacy (to name a few), the costs of financial institution regulation are
significant. Such costs include, but are not limited to, the significant amount
of management time and expense which is incurred in maintaining compliance and
developing systems for compliance with those rules and regulations as well as
the cost of examinations, audits and other compliance activities.
 
     Premiums for FDIC insurance have historically been significant costs of
doing business as financial institutions. In recent years, however, deposit
insurance premiums have been maintained at a stable and modest level by Sun
maintaining its banks in the so-
 
                                       43
<PAGE>   46
 
called "well capitalized" category of capital adequacy and the overall health of
the banking industry, in general. Future deposit insurance premium levels are
difficult to predict inasmuch as deposit insurance premiums will be determined
based on general economic conditions, the relative health of the banking and
financial institution industry and other unpredictable factors. It is reasonable
to expect that deposit insurance premiums will increase at some point in the
future.
 
     The future of financial institution regulation, and the costs of regulation
is uncertain and difficult to predict.
 
     The ongoing expansion of Internet and 'e-commerce' activity continues to
evolve. Thus far, Sun's banks have not experienced significant competition from
competitors' delivery of banking services via the Internet or other e-commerce
channels. The impact of the Internet and e-commerce on Sun's banks is difficult
to predict; Sun's information systems staff is continuing to explore
implementation of Internet banking opportunities for Sun's banks. Management
expects that Internet banking and e-commerce, in general, will result in
deposits being obtained as more of a "commodity" in the future, while nongeneric
loan products will continue to be handled face-to-face with the customer.
 
YEAR 2000
 
     Bank regulatory agencies, other regulatory bodies and the media have
focused on business continuity issues associated with computer systems and the
year 2000. Often described as the "Y2K" issue, financial institutions are
collectively being closely monitored for their plans to eliminate potential
computer processing problems on or after January 1, 2000. Regulatory agencies
are concerned about financial institution readiness with their internal systems
to accommodate the year 2000 transition. Specifically, financial institutions
are required to adopt a comprehensive Y2K compliance plan which is reviewed by
various bank regulatory agencies from time to time in terms of carrying out the
aspects of the plan and its impact on financial institution readiness.
 
     Sun and its banks are subject to the requirements as outlined by the
Federal Financial Institutions Examination Counsel (FFIEC). As such, the
measures that have been taken follow those guidelines regarding the Awareness,
Assessment, Renovation, Validation (testing) and Implementation phases as more
fully defined and described in various interagency publications. Year 2000
issues and plan status updates are communicated under these same guidelines to
the various boards of directors of Sun and its bank subsidiaries. Further,
periodic year 2000 reviews are performed by various banking regulatory agencies
and Sun's internal audit staff. Throughout 1998 and continuing in 1999, both
mission-critical and nonmission-critical programs and systems are being
addressed in an attempt to avoid unnecessary business interruptions. The review
is comprehensive and covers a variety of third party providers as well as
internal systems. The vast majority of programs in use are "packaged" or "turn
key" in nature, upon which Sun will primarily rely on its vendors for resolution
of year 2000 issues. Following the guidelines as set forth by the FFIEC,
changes, modifications or replacements to those programs are being made in
conjunction with test results. Except for its reliance on certain software and
hardware vendors for year 2000 solutions, Sun and its banks have minimal
dependence on other vendors on which the century date change is expected to have
a material impact.
 
     Certain key milestone dates for the Renovation and Implementation phases
have been established by the FFIEC. The Awareness, Assessment and Validation
phases have been
 
                                       44
<PAGE>   47
 
completed. The Renovation and Implementation phases are on schedule as of
December 31, 1998.
 
     The efforts of Sun and its banks on this issue are significant and ongoing.
 
     During the fourth quarter of 1998, certain of Sun's and the banks' systems
and software were tested for year 2000 readiness. Based on the results of that
testing, no significant mission-critical system failures were observed. Other
key planning and testing efforts will occur throughout calendar 1999, consistent
with the FFIEC's guidance and other regulatory requirements.
 
     Contingency plans, intended to address alternative courses of action in the
event that certain systems and software do not function properly with the date
change, are in the process of development. Timing and development of those
contingency plans are currently evolving in accordance with the FFIEC's guidance
and other regulatory requirements. Those contingency plans are expansive in
scope and also include infrastructure issues such as continuity of electricity
provided by public power companies and telecommunications provided by a variety
of entities.
 
     From a federal financial institution regulatory standpoint, most of the
recent monitoring and examinations performed by federal financial institution
regulatory agencies have been performed by the FDIC. Those FDIC examinations
have been frequent and are expected to be ongoing throughout 1999. Examinations
are performed on location at each bank insured by the FDIC, as required by
Congressional mandate. The FDIC, based on the results of its examination
procedures, determines a financial institution's 'rating' regarding its year
2000 readiness. Those ratings are 'satisfactory', 'needs improvement' or
'unsatisfactory'. Federal banking regulations prohibit disclosure of those
ratings to the public and outside parties by an institution. The FFIEC does,
however, maintain a website address which includes an updated list of financial
institutions that have been subject to enforcement actions relating to
regulatory concerns with the banks' current year 2000 readiness status. As of
December 31, 1998, none of Sun's banks were listed as being subject to
enforcement action for year 2000 readiness.
 
     Sun's and its banks' risk of year 2000 problems principally center around
the ability of various systems and software to continue processing transactions
and accurately accounting for activity in customer accounts after the century
date change. Even with the extensive testing methodologies implemented by Sun,
its banks and other financial institutions, until the century date change
actually occurs and it is determined that such systems properly process data
after that date, there can be no assurance that such systems will function
properly, despite adequate and appropriate planning, testing and remediation
efforts.
 
     Regulatory agencies require banks to update their customers on the banks'
compliance efforts. Letters and informational brochures are being sent to
customers notifying them of the banks' efforts at addressing the year 2000
issue, while block messages are being included on customers' account statements.
Sun and its banks are also following regulatory mandates that require an
assessment of their customers' year 2000 readiness efforts. Each bank has
distributed questionnaires requesting the status of certain customers' year 2000
readiness which the banks are reviewing and pursuing as deemed necessary.
 
     Sun estimates its cost to address the year 2000 issue approximated $250,000
in 1998. These costs principally relate to the added personnel costs, external
consultants and software upgrades in addition to the costs of testing and
planning. Such costs are difficult to estimate. Management expects to incur a
similar amount of such costs on this matter in 1999.
 
                                       45
<PAGE>   48
 
     Sun and its banks, in their ongoing effort to competently address evolving
Y2K issues, will continue to devote both human and financial resources to this
issue.
 
NEW ACCOUNTING STANDARDS
 
     Certain new accounting standards became applicable to Sun during 1998.
 
     Financial Accounting Standards Board (FASB) Statement No. 130, "Reporting
Comprehensive Income" requires presentation of all components of "comprehensive
income" and "total comprehensive income." This new standard became effective for
Sun as of January 1, 1998. Implementation of this new accounting standard had no
impact on Sun's financial position or results of operations for the year ended
December 31, 1998. Components of comprehensive income and total comprehensive
income are included in the consolidated statements of shareholders' equity.
 
     FASB Statement No. 131, "Disclosures About Segments of an Enterprise and
Related Information" revises reporting of information about operating segments
in annual and interim financial statements. This Statement sets revised
standards for disclosures about products and services, geographic areas and
major customers. It is intended to promote a more practical approach to segment
reporting by requiring presentation of information on the basis which is used
internally by management for evaluating segment performance and allocation of
resources to segments of the enterprise. The Statement permits aggregation or
combination of segments which have similar characteristics. Although Sun's banks
operate independently and are managed and monitored separately, each bank is
substantially similar in terms of business focus, types of customers, products
and services. Further, each of the banks and Sun are subject to substantially
similar laws and regulations unique to the banking industry. Accordingly, the
consolidated financial statements reflect the presentation of segment
information on an aggregated basis.
 
     FASB Statement No. 133, "Accounting For Derivative Instruments and Hedging
Activities" requires all derivatives to be recognized in financial statements
and to be measured at fair value. Gains and losses resulting from changes in
fair value would be included in income, or comprehensive income, depending on
whether the instrument qualifies for hedge accounting and the type of hedging
instrument involved. This new accounting standard will become effective for Sun
in the year 2000 and, because Sun has not typically entered into derivative
contracts either to hedge existing risks or for speculative purposes, is not
expected to have a material effect on its financial statements.
 
     The American Institute of Certified Public Accountants (AICPA) issued
Statement of Position 98-1, "Costs of Computer Software Developed or Obtained
for Internal Use." It requires capitalization of certain costs of development of
software and is not expected to have a material effect on Sun's financial
statements when implemented in 1999.
 
     The AICPA issued Statement of Position 98-5, "Reporting on the Costs of
Start-Up Activities." It requires start-up costs and organizational costs to be
charged to expense when incurred. The initial application of the statement will
require a cumulative effect adjustment for those companies that had previously
capitalized start-up and organization costs and will become effective in 1999.
See Note P to the consolidated financial statements.
 
     A variety of proposed or otherwise potential accounting standards are
currently under study by standard-setting organizations and various regulatory
agencies. Because of the tentative and preliminary nature of these proposed
standards, management has not determined whether implementation of such proposed
standards would be material to Sun's financial statements in future periods.
 
                                       46
<PAGE>   49
 
             SUPPLEMENTAL SELECTED FINANCIAL DATA FOR PERIODS ENDED
                               DECEMBER 31, 1998
 
     The following tables (tables A through G), present certain supplemental
selected financial data for Sun on a consolidated basis for the periods ended
December 31, 1998. The accompanying tables should be read in conjunction with
the financial statements and management's discussion and analysis of financial
condition and results of operations elsewhere herein.
 
DISTRIBUTION OF ASSETS, LIABILITIES AND STOCKHOLDERS' EQUITY (TABLE A)
 
     Net interest income, the primary component of earnings, represents the
difference between interest income on interest-earning assets and interest
expense on interest-bearing liabilities. Net interest income depends upon the
volume of interest-earning assets and interest-bearing liabilities and the rates
earned or paid on them. This table sets forth the daily average balances for the
major asset and liability categories and the actual related interest income and
expense (in thousands) and average yield/cost for the years ended December 31,
1998 and 1997. Corresponding information for the period ended December 31, 1996
is not meaningful.
 
<TABLE>
<CAPTION>
                                                  YEAR ENDED DECEMBER 31,
                                -----------------------------------------------------------
                                            1998                           1997
                                ----------------------------   ----------------------------
                                                       (1)                            (1)
                                          INTEREST   AVERAGE             INTEREST   AVERAGE
                                AVERAGE   INCOME/    YIELD/    AVERAGE   INCOME/    YIELD/
                                BALANCE   EXPENSE     COST     BALANCE   EXPENSE     COST
                                -------   --------   -------   -------   --------   -------
<S>                             <C>       <C>        <C>       <C>       <C>        <C>
ASSETS
Investment securities:
  U.S. Treasury and government
     agencies.................  $12,902    $  763     5.91%    $12,482    $  736     5.90%
Interest-bearing deposits with
  banks.......................      535        25     4.67%
Federal funds sold............   23,269     1,230     5.29%      5,200       289     5.56%
Loans held for resale.........      445        30     6.74%
Portfolio loans (2)...........   45,225     5,296    11.71%     15,407     1,846    11.98%
                                -------    ------    ------    -------    ------    ------
     Total Interest-Earning
       Assets/Interest
       Income.................   82,376     7,344     8.92%     33,089     2,871     8.68%
Allowance for loan losses
  (deduct)....................     (415)                          (146)
Cash and due from banks.......    4,094                          1,507
Premises and equipment, net...    1,706                            587
Other assets..................    1,910                            989
                                -------                        -------
          Total Assets........  $89,671                        $36,026
                                =======                        =======
</TABLE>
 
                                       47
<PAGE>   50
 
<TABLE>
<CAPTION>
                                                  YEAR ENDED DECEMBER 31,
                                -----------------------------------------------------------
                                            1998                           1997
                                ----------------------------   ----------------------------
                                                       (1)                            (1)
                                          INTEREST   AVERAGE             INTEREST   AVERAGE
                                AVERAGE   INCOME/    YIELD/    AVERAGE   INCOME/    YIELD/
                                BALANCE   EXPENSE     COST     BALANCE   EXPENSE     COST
                                -------   --------   -------   -------   --------   -------
<S>                             <C>       <C>        <C>       <C>       <C>        <C>
LIABILITIES AND STOCKHOLDERS' EQUITY
Interest-bearing deposits:
  Savings deposits............  $   285    $    9     3.16%    $   166    $    6     3.61%
  Time deposits under
     $100,000.................    5,480       287     5.24%      2,926       150     5.13%
  Time deposits of $100,000 or
     more.....................   10,073       557     5.53%      2,273       132     5.81%
  Other interest-bearing
     deposits.................   35,784     1,427     3.99%     16,539       626     3.78%
  Other.......................       33                             12
                                -------    ------    ------    -------    ------    ------
     Total Interest-Bearing
       Liabilities/Interest
       Expense................   51,655     2,280     4.41%     21,916       914     4.17%
Noninterest-bearing demand
  deposits....................   16,242                          6,030
Accrued interest on deposits
  and other liabilities.......      200                            100
Minority interest in
  consolidated subsidiaries...    5,120                            604
Stockholders' equity..........   16,454                          7,376
                                -------                        -------
          Total Liabilities
             and Stockholders'
             Equity...........  $89,671                        $36,026
                                =======                        =======
Net Interest Income...........             $5,064                         $1,957
                                           ======                         ======
Interest Rate Spread (3)......                        4.51%                          4.51%
                                                     ======                         ======
Net Yield on Interest-Earning
  Assets(4)...................                        6.15%                          5.91%
                                                     ======                         ======
Ratio of Average
  Interest-Earning Assets to
  Interest-Bearing
  Liabilities.................   1.59 X                         1.51 X
                                =======                        =======
</TABLE>
 
-------------------------
 
(1) Average yield/cost is determined by dividing the actual interest
    income/expense by the daily average balance of the asset or liability
    category.
 
(2) Average balance of loans includes non-accrual loans (none for periods
    presented).
 
(3) Interest rate spread represents the average yield on interest-earning assets
    less the average cost of interest-bearing liabilities.
 
(4) Net yield is based on net interest income as a percentage of average total
    interest-earning assets.
 
CHANGES IN NET INTEREST INCOME (TABLE B)
 
     The following table summarizes the extent to which changes in interest
rates and changes in the volume of interest-earning assets and interest-bearing
liabilities have affected the Corporation's net interest income during the
periods indicated. The change in
 
                                       48
<PAGE>   51
 
interest attributable to volume is calculated by multiplying the annual change
in volume by the prior year's rate. The change in interest attributable to rate
is calculated by multiplying the annual change in rate by the current year's
average balance. Any variance attributable jointly to volume and rate changes
has been allocated to each category based on the percentage of each to the total
change in both categories.
 
<TABLE>
<CAPTION>
                                                     YEAR ENDED DECEMBER 31, 1998
                                                              COMPARED TO
                                                     YEAR ENDED DECEMBER 31, 1997
                                                     -----------------------------
                                                                             NET
                                                     VOLUME      RATE       TOTAL
                                                     -------    -------    -------
<S>                                                  <C>        <C>        <C>
Increase (Decrease) In Interest Income:
  Investment securities:
     U.S. Treasury and government agencies.........  $   24     $    3     $   27
  Interest-bearing deposits with banks.............      --         25         25
  Federal funds sold...............................   1,006       (65)        941
  Loans held for resale............................      30                    30
  Portfolio loans..................................   3,569      (119)      3,450
                                                     ------     ------     ------
          Total....................................   4,628      (155)      4,473
Increase (Decrease) In Interest Expense
  On Deposits:
     Savings.......................................       4        (1)          3
     Time deposits under $100,000..................     131          6        137
     Time deposits of $100,000 or more.............     454       (29)        425
     Other interest-bearing deposits...............     725         76        801
Other..............................................       1        (1)         --
                                                     ------     ------     ------
          Total....................................   1,315         51      1,366
                                                     ------     ------     ------
Increase (Decrease) in Net Interest Income.........  $3,313     $(206)     $3,107
                                                     ======     ======     ======
</TABLE>
 
INVESTMENT PORTFOLIO (TABLE C)
 
     The following table sets forth the amortized cost and market value of
investment securities as of December 31, 1998, 1997 and 1996 (in thousands):
 
<TABLE>
<CAPTION>
                                                   DECEMBER 31,
                          ---------------------------------------------------------------
                                 1998                  1997                  1996
                          -------------------   -------------------   -------------------
                          AMORTIZED   MARKET    AMORTIZED   MARKET    AMORTIZED   MARKET
                            COST       VALUE      COST       VALUE      COST       VALUE
                          ---------   -------   ---------   -------   ---------   -------
<S>                       <C>         <C>       <C>         <C>       <C>         <C>
U.S. Treasury and
  government agencies...   $12,905    $12,923    $11,439    $11,534    $10,887    $10,872
                           -------    -------    -------    -------    -------    -------
          Total
          investments...   $12,905    $12,923    $11,439    $11,534    $10,887    $10,872
                           =======    =======    =======    =======    =======    =======
</TABLE>
 
                                       49
<PAGE>   52
 
     The following table sets forth the amortized cost, relative maturities and
weighted average yields of investment securities at December 31, 1998 (in
thousands):
 
<TABLE>
<CAPTION>
                                                 U.S. TREASURY AND
                                                GOVERNMENT AGENCIES
                                         ---------------------------------
                                                      WEIGHTED     TOTAL
                                         AMORTIZED    AVERAGE     CARRYING
                                           COST        YIELD       AMOUNT
                                         ---------    --------    --------
<S>                                      <C>          <C>         <C>
Maturity:
  Due in one year or less..............   $10,906       5.67%     $10,906
  Due after one year but within five
     years.............................     1,999       5.42%       1,999
                                          -------                 -------
          Total........................   $12,905                 $12,905
                                          =======                 =======
</TABLE>
 
     Following is a summary of the weighted average maturities of investment
securities at December 31, 1998:
 
<TABLE>
<S>                                         <C>         <C>
U.S. Treasury securities..................  3 months    25 days
U.S. Agencies.............................  7 months     3 days
</TABLE>
 
LOAN PORTFOLIO SUMMARY (TABLE D)
 
     Portfolio Loans outstanding as of the end of each period are shown in the
following table according to type of loan (in thousands):
 
<TABLE>
<CAPTION>
                                                   DECEMBER 31,
                                           -----------------------------
                                            1998       1997       1996
                                           -------    -------    -------
<S>                                        <C>        <C>        <C>
Commercial...............................  $60,366    $26,062    $ 3,768
Real estate mortgage.....................    4,372      2,607        534
Installment..............................    3,342      2,567        548
                                           -------    -------    -------
          Total portfolio loans..........  $68,080    $31,236    $ 4,850
                                           =======    =======    =======
</TABLE>
 
     The following table presents (in thousands) the remaining maturity of
portfolio loans outstanding at December 31, 1998 according to scheduled
repayments of principal.
 
     Aggregate maturities of portfolio loan balances which are due:
 
<TABLE>
<CAPTION>
                                            FIXED     VARIABLE
                                            RATE        RATE       TOTAL
                                           -------    --------    -------
<S>                                        <C>        <C>         <C>
In one year or less......................  $ 3,680    $32,070     $35,750
After one year but within five years.....    9,511     14,339      23,850
After five years.........................    2,522      5,958       8,480
Non-accrual loans (classified as variable
  rate)..................................       --         --          --
                                           -------    -------     -------
          Total..........................  $15,713    $52,367     $68,080
                                           =======    =======     =======
</TABLE>
 
                                       50
<PAGE>   53
 
     The following summarizes, in general, the Corporation's various loan
classifications:
 
COMMERCIAL
 
     Includes a range of business credit products, current asset lines of credit
and equipment term loans. These products bear higher inherent economic risk than
other types of lending activities.
 
REAL ESTATE
 
     Includes single family residential loans held for permanent portfolio, and
home equity lines of credit. Risks are nominal, borne out by loss experience,
housing economic data and loan-to-value percentages.
 
INSTALLMENT
 
     Includes a broad range of consumer credit products, secured by automobiles,
boats, etc., with typical consumer credit risks.
 
     All loans are subject to underwriting procedures commensurate with the loan
size, nature of collateral, industry trends, risks and experience factors.
Appropriate collateral is required for most loans, as is documented evidence of
debt repayment sources.
 
     As of December 31, 1998, there were no nonperforming loans (loans past due
90 days or on nonaccrual status).
 
                                       51
<PAGE>   54
 
SUMMARY OF LOAN LOSS EXPERIENCE (TABLE E)
 
     The table below summarizes portfolio loan balances, daily average loan
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, as of the end of each period.
 
<TABLE>
<CAPTION>
                                                   YEAR ENDED
                                                  DECEMBER 31,       PERIOD ENDED
                                               ------------------    DECEMBER 31,
                                                1998       1997          1996
                                               -------    -------    ------------
                                                         (IN THOUSANDS)
<S>                                            <C>        <C>        <C>
Allowance for loan losses at beginning of
  period.....................................  $   317    $    49       $   --
Allowance of acquired bank...................
Loans charged-off:
  Commercial.................................
  Real estate................................
  Installment................................
                                               -------    -------       ------
          Total charge-offs..................       --         --           --
Recoveries:
  Commercial.................................
  Real estate................................
  Installment................................
                                               -------    -------       ------
          Total recoveries...................       --         --           --
                                               -------    -------       ------
          Net charge-offs....................       --         --           --
Additions to allowance charged to expense....      379        268           49
                                               -------    -------       ------
     Allowance for loan losses at December
       31....................................  $   696    $   317       $   49
                                               =======    =======       ======
Total portfolio loans outstanding at December
  31.........................................  $68,080    $31,236       $4,850
                                               =======    =======       ======
Ratio of allowance for loan losses to
  portfolio loans outstanding................     1.02%      1.01%        1.01%
                                               =======    =======       ======
Average total portfolio loans for the year...  $45,225    $15,407       $4,850
                                               =======    =======       ======
Ratio of net charge-offs to average portfolio
  loans outstanding..........................     0.00%      0.00%        0.00%
                                               =======    =======       ======
</TABLE>
 
     The allowance for loan losses has been established as a general allowance
for future losses on the loan portfolio. For internal purposes, management
allocates the allowance to all loan classifications. The amounts allocated in
the following table, which includes all loans for which, based on the
Corporation's loan rating system, management has concerns, should not be
interpreted as an indication of future charge-offs and the amounts allocated
 
                                       52
<PAGE>   55
 
are not intended to reflect the amount that may be available for future losses
since the allowance is a general allowance.
 
<TABLE>
<CAPTION>
                                         YEAR ENDED DECEMBER 31,       PERIOD ENDED
                                         -----------------------       DECEMBER 31,
                                           1998           1997             1996
                                         --------       --------       ------------
                                                       (IN THOUSANDS)
<S>                                      <C>            <C>            <C>
Commercial.............................  $   318        $   145           $   15
Real estate mortgage...................       11             17                2
Installment............................       33             13                2
Unallocated............................      334            142               30
                                         -------        -------           ------
Total Allowance for Loan Losses........  $   696        $   317           $   49
                                         =======        =======           ======
          Total portfolio loans
             outstanding...............  $68,080        $31,236           $4,850
                                         =======        =======           ======
Percent of allowance to portfolio loans
  outstanding..........................     1.02%          1.01%            1.01%
                                         =======        =======           ======
</TABLE>
 
AVERAGE DEPOSITS (TABLE F)
 
     The following table presents the average balances of deposits (in
thousands) and the average rates of interest paid for the years ended December
31, 1998 and 1997.
 
<TABLE>
<CAPTION>
                                                        DECEMBER 31,
                                          ----------------------------------------
                                                 1998                  1997
                                          ------------------    ------------------
                                                     AVERAGE               AVERAGE
                                          AMOUNT      RATE      AMOUNT      RATE
                                          -------    -------    -------    -------
<S>                                       <C>        <C>        <C>        <C>
Noninterest-bearing demand deposits...    $16,242               $ 6,030
Savings deposits......................        285     3.16%         166     3.61%
Time deposits under $100,000..........      5,480     5.24%       2,926     5.13%
Time deposits of $100,000 or more.....     10,073     5.53%       2,273     5.81%
Other interest-bearing deposits.......     35,784     3.99%      16,539     3.78%
                                          -------               -------
          Total deposits..............    $67,864               $27,934
                                          =======               =======
</TABLE>
 
     The following table sets forth the amount of time certificates of deposit
issued in amounts of $100,000 or more, by time remaining until maturity, which
were outstanding at December 31, 1998 (in thousands):
 
<TABLE>
<S>                                                     <C>
Three months or less................................    $ 3,145
Three months to twelve months.......................      7,387
Over 12 months......................................      4,987
                                                        -------
                                                        $15,519
                                                        =======
</TABLE>
 
                                       53
<PAGE>   56
 
CERTAIN FINANCIAL RATIOS (TABLE G)
 
     The following table shows the ratio of net income to average stockholders'
equity, average total assets and certain other ratios for the periods ended
December 31, 1998, 1997 and 1996:
 
<TABLE>
<CAPTION>
                                                     YEAR ENDED         PERIOD
                                                    DECEMBER 31         ENDING
                                                   --------------    DECEMBER 31,
                                                   1998     1997         1996
                                                   -----    -----    ------------
<S>                                                <C>      <C>      <C>
Net income as a percentage of:
  Average stockholders' equity...................   n.m.     n.m.            n.m.
  Average total assets...........................   n.m.     n.m.            n.m.
Average stockholders' equity as a percentage of
  average total assets...........................  18.35%   20.47%          48.94%
Dividend payout ratio (cash dividends per share
  as a percentage of net income per share):
  Basic..........................................     --       --              --
  Diluted........................................     --       --              --
</TABLE>
 
-------------------------
 
n.m. -- not meaningful for the period presented.
 
                                       54
<PAGE>   57
 
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
     The following table lists the director nominees, directors and executive
officers of Sun.
 
<TABLE>
<CAPTION>
                                                                     DIRECTOR AND/OR
                                                                    EXECUTIVE OFFICER
NAME                   AGE                 POSITION                       SINCE
----                   ---                 --------                 -----------------
<S>                    <C>   <C>                                    <C>
Joseph D. Reid         56    Chairman, Chief Executive Officer and
                             Director                                     1996
Michael L. Kasten      53    Vice Chairman and Director                   1997
John S. Lewis          45    President and Director                       1999
Michael F. Hannley     50    Executive Vice President and Director        1997
Gary W. Hickel         50    Executive Vice President and Director        1997
Richard N. Flynn       55    Secretary and Director                       1997
*Sylvia Edmonds        51    Director                                     1997
  Cotton
Michael J. Devine      57    Director                                     1997
Michael J. Harris      61    Director Nominee                               --
Humberto S. Lopez      53    Director                                     1997
Kathryn L. Munro       50    Director                                     1999
Ronald K. Sable        57    Director                                     1997
Gerry J. Smith         41    Executive Vice President                     1998
Lee W. Hendrickson     43    Senior Vice President and Chief
                             Financial Officer                            1997
Patricia L. Stone      50    Senior Vice President                        1998
Leonard C. Zazula      44    Senior Vice President                        1997
Cristin Reid English   30    Vice President and General Counsel           1997
Paige E. Mulhollan     41    Vice President and Corporate
                             Controller                                   1999
Katherine P. Wait      34    Vice President                               1997
</TABLE>
 
-------------------------
* Not standing for re-election at 1999 Annual Meeting of Shareholders.
 
     JOSEPH D. REID, CHAIRMAN, CHIEF EXECUTIVE OFFICER, DIRECTOR, is the founder
of Sun, and each of its banks. Mr. Reid holds the office of Chairman of the
Board of Directors and Chief Executive Officer of Sun, and Chairman of the Board
and Chief Executive Officer of each of its banks. He also serves as Chairman,
President and Chief Executive Officer of Capitol Bancorp Ltd., a Michigan-based
bank development company with assets of over $1 billion, and which owns 51% of
the common stock of Sun. Mr. Reid has been in the bank development business
since 1982 and has an extensive background in the formation, organization and
operation of community based banks. After forming six banks in the Midwest, Mr.
Reid saw an opportunity to develop banks in the southwestern region of the
United States, specifically in Arizona. In 1996, he organized Bank of Tucson,
and formed Sun and one de novo in 1997. In 1998, Sun's second year of operation,
Mr. Reid led the development of four additional banks in the State of Arizona.
To date, Mr. Reid has organized 17 operating banks in the states of Michigan and
Arizona. Mr. Reid is
 
                                       55
<PAGE>   58
 
developing three additional bank holding companies to be located in Nevada,
California, and Indiana.
 
     Mr. Reid is a member of the board of directors of the Phoenix Chamber of
Commerce, and a member of the board of trustees of the Arizona's Children
Foundation. Before concentrating in the financial services field, he was engaged
in the private practice of law in the State of Michigan. Mr. Reid is the father
of Cristin Reid English.
 
     MICHAEL L. KASTEN, VICE CHAIRMAN, DIRECTOR, currently serves as managing
partner of Kasten Investments, LLC, a position he has held since 1997. He has
also served as the president of Kasten Management, Inc., a real estate
development and management company since 1982. Mr. Kasten is founder of numerous
companies which include Kasten Insulation Services, where he has served as vice
president and director since 1992. Mr. Kasten is a member of the board of
directors of Capitol Bancorp Ltd., the chairman of the board of directors of
Portage Commerce Bank, a wholly-owned subsidiary of Capitol Bancorp Ltd., and a
director of each of Bank of Tucson, Camelback Community Bank, Mesa Bank,
Southern Arizona Community Bank, Sunrise Bank of Arizona, and Valley First
Community Bank.
 
     JOHN S. LEWIS, PRESIDENT, DIRECTOR, joined Sun as its President in February
1999. As President, Mr. Lewis will assist the presidents of Sun's existing six
Arizona banks, as well as future banks, with operational issues. He served as
president of MicroAge Integration Group from January 1997 to 1999, where he was
responsible for its $1.4 billion global systems integration business, which
included MicroAge Infosystems Services and MicroAge Solutions. From 1974 to
1996, Mr. Lewis was employed with First Interstate Bank. He held several
different positions during that time, including chairman and chief executive
officer of the Southwest Region, executive and senior vice president of human
resources, executive and senior vice president of retail banking and executive
vice president of the Southwest Region Administration. In this latter position,
Mr. Lewis was responsible for overseeing operations for all First Interstate
divisions in Arizona, Nevada, Utah, Colorado, Wyoming and New Mexico. His
responsibilities included: legal compliance, human resources, corporate
properties, marketing/communications, training and support services. After First
Interstate was acquired by Wells Fargo Bank in 1996, Mr. Lewis served as
executive vice president and division manager for Wells Fargo's Southwest Region
branch banking network.
 
     MICHAEL F. HANNLEY, EXECUTIVE VICE PRESIDENT, DIRECTOR, currently serves as
the President of the Bank of Tucson, a de novo institution formed in June 1996
and a wholly-owned subsidiary of Sun. He has been involved in the banking
industry for over twenty-five years. He previously served as senior vice
president and director of professional banking and administration for National
Bank of Arizona from May 1986 to January 1996. He was an original incorporator
of Sun.
 
     GARY W. HICKEL, EXECUTIVE VICE PRESIDENT, DIRECTOR, is the president of
Valley First Community Bank, a de novo bank that opened in June 1997 and a
majority-owned subsidiary of Sun. Mr. Hickel has been involved in the greater
Phoenix area banking industry for over twenty years. His prior positions include
senior vice president and southwest division head for First Interstate Bank's
residential real estate group from 1991 to 1994, and consultant to various
financial service companies involved in commercial real estate mortgage lending
on a nationwide basis including Securnet Financial Corporation/ Pathway
Financial from 1994 to 1996, and Consumer Guaranty Corporation for a brief
period in 1996.
 
                                       56
<PAGE>   59
 
     RICHARD N. FLYNN, DIRECTOR, SECRETARY, is the president of Flynn &
Associates, a commercial tax consulting firm in Tucson, a position he has held
since 1989. He has served as a managing partner of Winema Partners, a real
estate development company since 1985. He serves as secretary and a director of
Bank of Tucson.
 
     SYLVIA EDMONDS COTTON, DIRECTOR, is currently serving as the chairman and
chief executive officer of Perpetua, Inc., a funeral home and cemetery
acquisition company, a position she has held since 1998. Since January 1994 she
has also served as the senior managing director for The Edmonds Group, an
investment and merchant banking firm. Ms. Cotton gained her operating experience
by serving as executive vice president for finance and administration for
Envirotest, an environmental testing company, from 1991 to 1994. She also serves
as a director of Bank of Tucson.
 
     MICHAEL J. DEVINE, DIRECTOR, has been engaged in the private practice of
law since 1967 in Bloomfield Hills, Michigan. He was an incorporating director
of several successful efforts to form de novo banks in Michigan and Arizona. He
currently serves as chairman on the board of Oakland Commerce Bank, a
wholly-owned subsidiary of Capitol, and as a director of each of Bank of Tucson,
Camelback Community Bank, Mesa Bank, Southern Arizona Community Bank, Sunrise
Bank of Arizona, and Valley First Community Bank, which are majority-owned
subsidiaries of Sun.
 
     MICHAEL J. HARRIS, DIRECTOR NOMINEE, has been nominated and agreed to serve
as a director of Sun immediately following the annual meeting of shareholders.
Mr. Harris has been a real estate broker at Tucson Realty and Trust Co. since
February 1990. He also serves as a director of Bank of Tucson.
 
     HUMBERTO S. LOPEZ, DIRECTOR, serves as the president and a director of HSL
Properties, which participates in real estate syndications, acquisitions, and
sales. He has held this position since 1975. He also serves as a director of
Bank of Tucson.
 
     KATHRYN L. MUNRO, DIRECTOR, was employed with Bank of America from 1980 to
1998. Most recently she served as chief executive officer of the southwest
banking group for Bank of America's Southwest region. Prior to that she served
as president of Bank of America Arizona, and was a member of the bank's Board of
Directors from 1994 until 1998. Ms. Munro joined Sun as a director in April
1999.
 
     RONALD K. SABLE, DIRECTOR, has served as senior vice president of The
Aerospace Corporation since October 1997, where he is responsible for new
business development and is a member of the Executive Council. From July 1994 to
October 1997 he served as vice president of Space Technology Applications and as
vice president, Washington Region.
 
     GERRY SMITH, EXECUTIVE VICE PRESIDENT, joined Sun in October of 1998. He
served as president and chief executive officer of Signature Bank in Bad Axe,
Michigan, an eight-branch community bank, from 1995 to 1998. Prior to this
position, he served as the community bank president for the Monroe region of
First of America Bank Corporation in Monroe, Michigan from 1989 to 1995. Mr.
Smith provides Sun oversight in the areas of risk management and accounting.
 
     LEE W. HENDRICKSON, SENIOR VICE PRESIDENT AND CHIEF FINANCIAL OFFICER, has
served as senior vice president and chief financial officer for Capitol Bancorp
Ltd. since 1991, and as Senior Vice President and Chief Financial Officer of Sun
since its inception.
 
     PATRICIA L. STONE, SENIOR VICE PRESIDENT OF CREDIT ADMINISTRATION, joined
Sun in 1998 with over 20 years experience in the banking industry. Ms. Stone
served as Senior
 
                                       57
<PAGE>   60
 
Vice President from 1992 to 1997 for Wells Fargo Bank, formerly First Interstate
Bank. Ms. Stone was employed in various capacities at First Interstate since
1975.
 
     LEONARD C. ZAZULA, SENIOR VICE PRESIDENT, BANK OPERATIONS. In August 1997,
Mr. Zazula became senior vice president of systems operations for Sun after
joining Valley First Community Bank. Since 1989, Mr. Zazula has been involved in
numerous successful de novo bank efforts both in Michigan and Arizona, including
affiliates of Capitol. Mr. Zazula was employed with Valley Commerce Bank from
January 1995 to January 1997 as vice president, chief financial officer, and
senior operations officer.
 
     CRISTIN REID ENGLISH, VICE PRESIDENT AND GENERAL COUNSEL, has served as
vice president of corporate development and general counsel of Capitol Bancorp
Ltd. and Sun since September 1997. Prior to this position she served as vice
president of Access BIDCO, Incorporated (a hybrid commercial finance company),
from 1995 to 1998. From 1993 to 1995 she was engaged in the private practice of
law in Lansing, Michigan. She currently serves as a director of Ann Arbor
Commerce Bank and Portage Commerce Bank, affiliate banks of Capitol Bancorp Ltd.
Ms. English is the daughter of Joseph D. Reid.
 
     PAIGE E. MULHOLLAN, VICE PRESIDENT AND CORPORATE CONTROLLER, joined Sun as
its vice president and corporate controller in January 1999. From March 1997 to
January 1999, he was corporate controller of Employee Solutions, Inc., an
employee leasing firm located in Phoenix, Arizona. From 1994 to March 1997, he
was an assistant vice president with the Controller Group and Consolidated
Reporting with First Interstate Bancorp and Wells Fargo and Company, which
acquired First Interstate Bancorp in 1996.
 
     KATHERINE P. WAIT, VICE PRESIDENT, joined the Bank of Tucson in her current
position prior to its opening in 1996. She previously served as assistant vice
president and financial reporting manager for the National Bank of Arizona from
October 1992 to May 1996.
 
                                       58
<PAGE>   61
 
                   BOARDS OF DIRECTORS OF SUN'S SUBSIDIARIES
 
                                 BANK OF TUCSON
 
Bruce I. Ash, Vice President
Paul Ash Investment Co.
 
Sylvia Edmonds Cotton, Chairman & CEO
Perpetua, Inc
 
Michael J. Devine
Attorney At Law
 
Brian K. English
Attorney At Law
 
William A. Estes, Jr., President
TEM Corp.
 
Richard N. Flynn, President
Flynn & Associates
 
Michael F. Hannley, President
 
Michael J. Harris, Associate Broker
Tucson Realty and Trust Company
 
Richard F. Imwalle, President
University of Arizona Foundation
 
Michael L. Kasten, Managing Partner
Kasten Investments, LLC
 
Burton J. Kinerk, Attorney At Law
Kinerk, Beal, Schmidt &Dyer, PC
 
Humberto S. Lopez, President
HSL Properties, Inc.
 
Lyn M. Papanikolas, Director
of Public Relations
Arizona Children's Home
 
Joseph D. Reid, Chairman and CEO
 
                            CAMELBACK COMMUNITY BANK
 
Shirley A. Agnos, President
Arizona Town Hall
 
Michael J. Devine
Attorney At Law
 
Brian K. English
Attorney At Law
 
Michael L. Kasten, Managing Partner
Kasten Investments, LLC
 
Jolm S. Lewis, President
Sun Community Bancorp Limited
 
Tammy A. Linn
Consultant
 
Susan C. Mulligan,
Certified Public Acct.
Miller Wagner & Co., LTD., CPA's
 
Earl A. Petznick, President and CEO
Nothside Hay Co.
 
William J. Post, President and CEO
Arizona Public Service Co.
 
Barbara J. Ralston, President
 
Joseph D. Reid, Chairman and CEO
 
Dan A. Robledo,
Senior Vice President and County Operations Manager
Lawyer's Title of Arizona, Inc.
 
Mary Jane Rynd, Partner
Rynd, Carneal & Ewing, PLC
 
Senator Jacqueline J. Steiner
Community Volunteer
 
                                   MESA BANK
 
Neil R. Bama, President
 
Michael J. Devine
Attorney At Law
 
Debra L. Duvall, Ed.D.,
Assistant Superintendent
Mesa Public Schools
 
Brian K. English
Attorney At Law
 
Robert R. Evans, Sr. Partner
Evans Management Co.
 
Gary W. Hickel, President
Valley First Community Bank
 
Stewart A. Hogue, Owner
Commercial Lithographers
 
Michael L. Kasten, Managing Partner
Kasten Investments, LLC
 
                                       59
<PAGE>   62
 
Philip S. Kellis, Managing Partner
Dobson Ranch Inn
 
Ruth L. Nesbitt
Community Volunteer
 
Joseph D. Reid, Chairman and CEO
 
James A. Schmidt, Certified Public
Accountant
Nelson Lambson & Co., PLC
 
Daniel P. Skinner, Owner
& Manager
Lebaron & Carroll LSI, Inc.
 
Terry D. Turk, President
Sun American Mortgage Co.
 
                        SOUTHERN ARIZONA COMMUNITY BANK
 
William R. Assenmacher, President
TA. Caid Industries, Inc.
 
Thomas F. Cordell,
Director/Multi-Media Specialist
University of Arizona, ECAT
 
Michael J. Devine
Attorney At Law
 
Robert A. Elliot,
President & Owner
Robert A. Elliot, Inc.
 
Brian K. English
Attorney At Law
 
Michael F. Hannley, President
Bank of Tucson
 
Michael L. Kasten,
Managing Partner
Kasten Investments, LLC
 
John P. Lewis, President
 
Jim Livengood, Director of Athletics
University of Arizona
 
James A. Mather
Certified Public Accountant/
Attorney At Law
 
Joseph D. Reid, Chairman and CEO
 
Louise M. Thomas, President
Events Made Special
 
Paul A. Zucarelli,
Owner & Principal
Gordon, Zucarelli & Handley
Insurance
 
                            SUNRISE BANK OF ARIZONA
 
Sandra A. Abalos, President
Abalos & Associates, PC
 
Michael J. Devine
Attorney At Law
 
Brian K. English
Attorney At Law
 
Howard J. Hickey, III,
Executive Vice President
Sunrise Bank of Arizona
 
William D. Hinz, President
 
Michael L. Kasten, Managing Partner
Kasten Investments, LLC
 
John T. Katsenes, Manager
Katsenes Enterprises
 
Kevin B. Kinerk,
Executive Vice President
Sunrise Bank of Arizona
 
Gerald D. Paquette, President
Commercial Blueprint Company
 
Joseph D. Reid, Chairman and CEO
 
Mark A. Steig
Orthodontist
 
James R. Wentworth, Principal
Wentworth, Webb & Postal
 
                          VALLEY FIRST COMMUNITY BANK
 
W. Craig Berger, President
W. Craig Berger Financial Services, Ltd.
 
Marilyn D. Cummings, Realtor
Russ Lyon Realty Company
 
Michael J. Devine
Attorney At Law
 
                                       60
<PAGE>   63
 
Brian K. English
Attorney At Law
 
William R. Fitzpatrick,
Certified Public Accountant
Fitzpatrick, Hopkins, Kelly &
Leonhard, PLC
 
Warner A. Gabel, III,
President & Designated Broker
Gabel Investments, Inc.
 
Patrick J. Harris,
Vice President of Marketing
Skill Golf, Inc.
 
Gary W. Hickel, President
 
Michael L. Kasten,
Managing Partner
Kasten Investments, LLC
 
Gordon D. Murphy, Chairman
Esperanca Foundation
 
Mary D. Ogilvy
Community Volunteer
 
Joseph D. Reid, Chairman and CEO
 
Harry Rosenzweig, Co-Owner
Harry's Fine Jewelry
 
                                       61
<PAGE>   64
 
DIRECTOR COMPENSATION
 
     Each non-employee director of Sun receives a fee of $750 for attendance at
each board meeting. In addition, non-employee directors receive a fee of $200
for attendance at meetings of any committees of the board on which they serve.
Messrs. Kasten, Devine and Sable each receive a travel allowance of $300 for
each meeting attended. Directors who are also officers of Sun are not
compensated for their services as directors.
 
BOARD COMMITTEES
 
     The Board of Directors has an Executive Committee, a Compensation Committee
and an Audit Committee.
 
     EXECUTIVE COMMITTEE.  The Executive Committee has the authority to act in
place of the full Board of Directors, whenever the Board is not in session. The
Executive Committee shall report through its chairman, actions taken between the
regular meetings of the Board of Directors. The Board of Directors retains the
right to rescind any committee action which remains executory at the time of
consideration.
 
     COMPENSATION COMMITTEE.  The Compensation Committee is responsible for
reviewing and recommending compensation of Sun's officers and recommending
non-cash compensation programs, including stock option plans and grants
thereunder, retirement plans, 401(k) plans and employee stock purchase plans.
 
     AUDIT COMMITTEE.  The Audit Committee reports to the Board of Directors in
discharging its responsibilities relating to the accounting, reporting and
financial control practices of Sun. The Audit Committee has general
responsibility for the oversight of financial controls, as well as Sun's
accounting and audit activities. The Audit Committee also annually reviews the
qualifications of the independent auditors. The Audit Committee is composed
entirely of outside directors who are not now, and have never been, officers of
Sun.
 
                              COMMITTEE MEMBERSHIP
 
<TABLE>
<CAPTION>
NAME                       EXECUTIVE COMMITTEE   COMPENSATION COMMITTEE   AUDIT COMMITTEE
----                       -------------------   ----------------------   ---------------
<S>                        <C>                   <C>                      <C>
Joseph D. Reid...........           X
Richard N. Flynn.........           X
Michael L. Kasten........           X                      X
Humberto S. Lopez........           X                      X
Sylvia Edmonds Cotton....                                  X
Michael J. Devine........                                                        X
Ronald Sable.............                                                        X
</TABLE>
 
                                       62
<PAGE>   65
 
EXECUTIVE COMPENSATION
 
                           SUMMARY COMPENSATION TABLE
 
     The table below sets forth compensation paid by Sun to its Chief Executive
Officer and other executive officers whose compensation exceeds $100,000. Some
of Sun's executive officers are employed by both Sun and Capitol and receive
compensation from each company. The options listed below include options granted
by Sun and also its bank subsidiaries. This table does not reflect compensation
paid to those individuals by Capitol. John S. Lewis, Sun's recently-appointed
President, did not begin serving in that capacity until after December 31, 1998.
 
<TABLE>
<CAPTION>
                                                                             LONG-TERM
                                                            ANNUAL          COMPENSATION
                                                         COMPENSATION          AWARDS
                                                            AWARDS          ------------
                                                      ------------------     SECURITIES
NAME AND                                               SALARY     BONUS      UNDERLYING
PRINCIPAL POSITION                            YEAR      ($)        ($)      Options/SARs
------------------                            ----    --------    ------    ------------
<S>                                           <C>     <C>         <C>       <C>
Joseph D. Reid(1)
  Chairman and Chief Executive Officer of
  Sun, Chairman and Chief Executive Officer
  of each of Sun's current bank
  subsidiaries..............................  1998     101,154        --      127,694(2)
                                              1997      36,923        --       45,000(3)
                                              1996       9,615        --      140,000(4)
Michael F. Hannley
  Executive Vice President of Sun; President
  of Bank of Tucson.........................  1998     138,089    12,000        5,000(5)
                                              1997     132,990        --       12,000(5)
                                              1996     115,053        --       60,000(6)
Gary W. Hickel(7)
  Executive Vice President of Sun; President
  of Valley First Community Bank............  1998     134,807     5,000        7,000(8)
                                              1997     123,193        --       14,000(9)
</TABLE>
 
-------------------------
 
(1) Excludes compensation paid to Mr. Reid for services rendered in all
    capacities to Capitol.
 
(2) Represents 72,694 Sun options; 5,000 Camelback Community Bank options;
    20,000 Mesa Bank options; 5,000 Southern Arizona Community Bank options;
    20,000 Sunrise Bank of Arizona options; and 5,000 Valley First Community
    Bank options.
 
(3) Represents no Sun options; 20,000 Camelback Community Bank options; 20,000
    Southern Arizona Community Bank options; and 5,000 Valley First Community
    Bank options.
 
(4) Represents 20,000 Valley First Community Bank options and 120,000 Bank of
    Tucson options, which were converted into Sun options in 1997 when Bank of
    Tucson became a wholly-owned subsidiary of Sun.
 
(5) Represents Sun options.
 
                                       63
<PAGE>   66
 
(6) Represents 60,000 Bank of Tucson options, which were converted into Sun
    options in 1997 when Bank of Tucson became a wholly-owned subsidiary of Sun.
 
(7) Mr. Hickel's employment with Sun commenced in fiscal 1997.
 
(8) Represents 5,000 Sun options and 2,000 Valley First Community Bank options.
 
(9) Represents 12,000 Sun options and 2,000 Valley First Community Bank options.
 
                       OPTIONS GRANTS IN LAST FISCAL YEAR
 
     The following table shows grants of stock options by Sun and its subsidiary
banks to the named Sun executive officers during the fiscal year ended December
31, 1998. Sun does not maintain an option or other stock-based plan that
provides for the grant of stock appreciation rights.
 
<TABLE>
<CAPTION>
                                                                             POTENTIAL REALIZABLE
                                        INDIVIDUAL GRANTS                      VALUE AT ASSUMED
                        --------------------------------------------------      ANNUAL RATES OF
                        NUMBER OF     PERCENT OF                                  STOCK PRICE
                        SECURITIES   TOTAL OPTIONS   EXERCISE                  APPRECIATION FOR
                        UNDERLYING    GRANTED TO      PRICE                       OPTION TERM
NAME AND GRANTOR OF      OPTIONS     EMPLOYEES IN      (PER     EXPIRATION   ---------------------
OPTION                   GRANTED      FISCAL YEAR     SHARE)       DATE         5%          10%
-------------------     ----------   -------------   --------   ----------   ---------   ---------
<S>                     <C>          <C>             <C>        <C>          <C>         <C>
Joseph D. Reid
  Sun.................    22,694(1)      27.5%        $10.00     11/01/08    $108,250    $259,392
                          50,000(1)                    10.00     01/01/09     238,500     571,500
  Camelback Community
     Bank.............     5,000           45          14.00     10/01/07      38,600      95,050
  Mesa Bank...........    20,000           60          14.00     12/31/05     114,000     265,600
  Southern Arizona
     Community Bank...     5,000           45          14.00     10/01/07      38,600      95,050
  Sunrise Bank of
     Arizona..........    20,000           40          14.00     10/01/08     176,000     446,200
  Valley First
     Community Bank...     5,000         60.6          14.00     10/01/05      28,500      66,400
Michael F. Hannley
  Sun.................     5,000(1)      1.89          10.00     11/01/08      23,850      57,150
Gary W. Hickel
  Sun.................     5,000(1)      1.89          10.00     11/01/08      23,850      57,150
  Valley First
     Community Bank...     2,000         22.9          14.00     09/30/05      11,400      26,560
</TABLE>
 
-------------------------
 
(1) Sun has the right to repurchase options for a period of 5 years after the
    date of issuance at a price of $.10 per option. The right of repurchase
    expires at the rate of 20% of the issued options per year during the first 5
    years from the date of issuance.
 
                                       64
<PAGE>   67
 
                AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                       AND FISCAL YEAR-END OPTION VALUES
 
     The following table shows the value of the named Sun executive officers'
unexercised options at December 31, 1998. None of the named executive officers
exercised any stock options in 1998.
 
<TABLE>
<CAPTION>
                                                       NUMBER OF SECURITIES          VALUE OF UNEXERCISED
                              SHARES                  UNDERLYING UNEXERCISED         IN-THE-MONEY OPTIONS
                             ACQUIRED               OPTIONS AT FISCAL YEAR-END       AT FISCAL YEAR-END(1)
                                ON       VALUE     ----------------------------   ---------------------------
NAME                         EXERCISE   REALIZED   EXERCISABLE    UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
----                         --------   --------   -----------    -------------   -----------   -------------
<S>                          <C>        <C>        <C>            <C>             <C>           <C>
Joseph D. Reid.............        --         --     312,694(2)            --     $1,795,764             --
Michael F. Hannley.........        --         --      77,000(3)            --        829,800             --
Gary W. Hickel.............        --         --      21,000(4)            --        150,000             --
</TABLE>
 
-------------------------
(1) Assumes a market price for Sun's common stock equal to $16.00, the mid range
    of the offering price, less the exercise price. None of the bank options are
    in-the-money.
 
(2) Represents 192,694 Sun options; 25,000 Camelback Community Bank options;
    20,000 Mesa Bank options; 25,000 Southern Arizona Community Bank options;
    20,000 Sunrise Bank of Arizona options; and 30,000 Valley First Community
    Bank options.
 
(3) 77,000 Sun options.
 
(4) 17,000 Sun options, 4,000 Valley First Community Bank options.
 
EMPLOYMENT AGREEMENTS
 
     JOSEPH D. REID.  Sun employs Joseph D. Reid under an agreement which
terminates on January 1, 2001. The agreement automatically renews for successive
one-year periods unless either Sun or Mr. Reid gives written notice to the
contrary. In addition to information found elsewhere in this prospectus, the
agreement provides:
 
     - a base salary equal to $25,000 per bank subsidiary;
 
     - discretionary bonuses;
 
     - stock options equal to 5% of the total outstanding shares of Sun's common
       stock, subject to Sun's right to repurchase any such options;
 
     - right to receive additional stock options equal to 5% of any additional
       issuances of Sun's common stock, having an exercise price equal to the
       fair market value at the time of the grant; and
 
     - participation in Sun's benefit plans, an automobile and lodging
       allowance, and certain other fringe benefits.
 
If Mr. Reid's employment is terminated without cause, Mr. Reid will receive his
base salary for the duration of the then current term plus one additional year's
salary. In the event Sun is sold to Capitol, then all of Mr. Reid's vested
options shall be converted into options of Capitol equal to the ratio that Sun's
common stock is converted into Capitol's common stock. In the event Sun is sold
to a third party, Mr. Reid will receive a lump sum payment equal to two times
his annual base salary.
 
     Additionally, each of Sun's subsidiaries employs Mr. Reid, as Chief
Executive Officer, under separate agreements. The agreements are for a term of
three years and automatically renew for additional one year terms unless notice
is otherwise given by either party. Mr. Reid receives no cash compensation under
the agreements, but he does receive stock
 
                                       65
<PAGE>   68
 
options to purchase 30,000 shares of common stock in each bank. The options are
exercisable at $14.00 per share. In the event a bank is sold to Sun, the options
granted to Mr. Reid to purchase shares in such bank will be converted into
options of Sun equal to the ratio that the bank's common stock is converted into
Sun's common stock. The converted options will become immediately vested and
exercisable. In the event a bank is sold to a third party, then all of Mr.
Reid's stock options to purchase shares in such bank will become immediately
vested and exercisable.
 
     JOHN S. LEWIS.  Sun employs its newly-appointed President, John S. Lewis,
under an agreement which terminates February 1, 2004. The agreement provides:
 
     - an annual base salary equal to $150,000, with annual adjustments at the
       discretion of the board of directors;
 
     - discretionary bonuses;
 
     - stock options equal to 3.5% of the total issued shares of Sun's common
       stock, having an exercise price of $10.00 per share, subject to Sun's
       right to repurchase any such options;
 
     - right to receive additional stock options equal to 3.5% of any additional
       issuances of Sun's common stock, having an exercise price equal to the
       fair market value at the time of the grant; and
 
     - participation in Sun's benefit plans, an automobile allowance, and
       certain other fringe benefits.
 
If Mr. Lewis' employment is terminated without cause, Mr. Lewis will receive for
a period of one year following termination an amount equal to his annual base
salary on the date of termination. In the event Sun is sold to Capitol, then all
of Mr. Lewis' vested options will convert into options of Capitol equal to the
ratio that Sun's common stock is converted into Capitol's common stock. In the
event Sun is sold to a third party, Sun's right to repurchase any of the stock
options terminates.
 
     GARY W. HICKEL.  Valley First Community Bank employs Gary W. Hickel under
an agreement which terminates on October 1, 1999. The agreement automatically
renews for successive one-year periods unless either Valley First or Mr. Hickel
gives written notice to the contrary. In addition to information found elsewhere
in this prospectus, the agreement provides:
 
     - an annual base salary equal to $125,000, with annual adjustments at the
       discretion of the board of directors;
 
     - discretionary bonuses;
 
     - stock options to purchase a total of 20,000 shares of Valley Community's
       common stock at an exercise price of $14.00 per share, all of which shall
       vest in accordance with certain performance standards;
 
     - right to receive additional stock options to purchase his pro rata share
       of all or any part of new issuances of Valley Community's common stock;
       and
 
     - participation in Valley Community's benefit plans, an automobile
       allowance, and certain other fringe benefits;
 
If Mr. Hickel's employment is terminated without cause, Mr. Hickel will receive
for a period of one year following termination an amount equal to his annual
base salary on the date of termination. In the event Mr. Hickel is terminated
without cause or upon a change
 
                                       66
<PAGE>   69
 
in control of Valley Community, including a sale to Capitol, all stock options
granted under the agreement will immediately vest and become exercisable. In the
event Valley Community is sold to a third party, Mr. Hickel will receive a lump
sum payment equal to two times his annual base salary.
 
     MICHAEL F. HANNLEY.  Bank of Tucson employs Michael F. Hannley under an
at-will employment agreement. In addition to information found elsewhere in this
prospectus, the agreement provides:
 
     - for discretionary bonuses;
 
     - stock options to purchase a total of 30,000 shares of Sun's common stock
       at an exercise price of $14.00 per share, subject to Sun's right to
       repurchase any such options; and
 
     - right to receive additional stock options to purchase his pro rata share
       of all or any part of new issuances of Sun's common stock.
 
In the event Sun is sold to Capitol, then all of Mr. Hannley's stock options
will convert into options of Capital equal to the ratio that Sun's common stock
is converted into Capitol's common stock. In the event Sun is sold to a third
party, Mr. Hannley will receive a lump sum payment equal to two times his annual
base salary.
 
STOCK OPTION PROGRAM
 
     In November 1998, Sun's Board of Directors adopted a stock option program.
The program establishes an option pool, which at all times will be equal to 15%
of the issued and outstanding shares of Sun. The options issued pursuant to the
program have an exercise price equal to the fair market value at the time of
issuance, a ten year exercise period, and are subject to a diminishing right of
repurchase for a five year period from the date of issue. The right of
repurchase does not apply to those options that have been exercised. The options
are non-dilutive in the event of a stock split or stock dividend. Pursuant to
the program, the option pool will be allocated as follows: corporate officers
5%, Chairman and Chief Executive Officer 5%, President 3.5%, Board of Directors
1%, and unallocated .5%.
 
                                       67
<PAGE>   70
 
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     Sun's banking subsidiaries have, in the normal course of business, made
loans to certain directors and officers of Sun and its subsidiaries, and to
organizations in which certain directors and officers have an interest. As of
December 31, 1998, the outstanding principal balance of such loans approximated
$4,674,000 representing 17.5% of the stockholders' equity. In the opinion of
management, such loans were made in the ordinary course of business and were
made on substantially the same terms, including interest rates and collateral as
those prevailing at the time for comparable transactions with unrelated parties
and did not involve more than the normal risk of collectibility or present other
unfavorable features. Sun has a written policy that all loans to, and all
transactions with Sun's officers, directors, affiliates and/or shareholders
holding 10% or more of Sun's stock will be made or entered into for bona fide
business purposes, on terms no less favorable than could be made to, or obtained
from, unaffiliated parties, and shall be approved by a majority of the directors
of Sun, including a majority of the independent disinterested directors of Sun.
 
     Lee W. Hendrickson is Sun's Senior Vice President and Chief Financial
Officer and also serves as the Senior Vice President and Chief Financial Officer
of Capitol Bancorp Ltd., Sun's controlling shareholder. Cristin Reid English is
Sun's Vice President and General Counsel and also serves as Vice President and
General Counsel of Capitol Bancorp Ltd.
 
     East Valley Community Bank, in organization, has entered into a lease
agreement with Chandler Properties Group, LLC. The lease is at market rate and
for an initial term of ten years. The principals of Chandler Properties Group,
LLC include Messrs. Kasten, Lopez, Flynn and Devine, members of the board of
directors of Sun and certain of its banks.
 
                                       68
<PAGE>   71
 
                             PRINCIPAL SHAREHOLDERS
 
     This table sets forth information regarding the beneficial ownership as of
March 31, 1999 of common stock in Sun and each of its bank subsidiaries held by:
 
     - each beneficial owner of more than 5% of the outstanding shares of Sun's
       common stock,
 
     - each director and director-nominee of Sun,
 
     - each of the named executive officers of Sun, and
 
     - all of Sun's directors and executive officers as a group.
 
     Unless otherwise indicated, each of the shareholders listed below has sole
voting and investment power with respect to the shares beneficially owned and
the address of each of the listed shareholders is 2777 East Camelback Road,
Phoenix, Arizona 85016.
 
SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                  SHARES BENEFICIALLY OWNED    SHARES BENEFICIALLY OWNED
                                    PRIOR TO THE OFFERING        AFTER THE OFFERING(1)
NAME AND ADDRESS OF               -------------------------    -------------------------
BENEFICIAL OWNER                    NUMBER      PERCENTAGE       NUMBER      PERCENTAGE
-------------------               ----------    -----------    ----------    -----------
<S>                               <C>           <C>            <C>           <C>
Capitol Bancorp Ltd.............  1,965,474        51.00%
  One Business & Trade Center
  200 Washington Square North
  Lansing, MI 48933
Joseph D. Reid..................    226,394(2)      5.87%
Michael L. Kasten...............     95,554(3)      2.48%
John S. Lewis...................    137,385(4)      3.44%
Michael F. Hannley..............     92,750(5)      2.40%
Gary W. Hickel..................     18,000(6)         *
Richard N. Flynn................     51,422(3)      1.33%
Sylvia Edmonds Cotton...........     18,484(7)         *
Michael J. Devine...............     10,522(3)         *
Michael J. Harris...............     16,800            *
Humberto S. Lopez...............    122,645(3)      3.18%
Kathryn L. Munro(8).............         --           --
Ronald K. Sable.................     27,601(3)         *
Gerry Smith.....................     17,100(9)         *
Lee W. Hendrickson..............     10,600(10)        *
Patricia L. Stone...............     21,000(11)        *
Leonard C. Zazula...............     20,000(12)        *
Cristin Reid English............     13,962(13)        *
Paige E. Mulhollan..............         --           --
</TABLE>
 
                                       69
<PAGE>   72
 
<TABLE>
<CAPTION>
                                  SHARES BENEFICIALLY OWNED    SHARES BENEFICIALLY OWNED
                                    PRIOR TO THE OFFERING        AFTER THE OFFERING(1)
NAME AND ADDRESS OF               -------------------------    -------------------------
BENEFICIAL OWNER                    NUMBER      PERCENTAGE       NUMBER      PERCENTAGE
-------------------               ----------    -----------    ----------    -----------
<S>                               <C>           <C>            <C>           <C>
Katherine P. Wait...............     13,750(14)        *
All Officers and Directors as a
  Group (19 Persons)............  2,727,159(15)    65.06%
</TABLE>
 
-------------------------
 
  *  Represents less than 1% of the total shares outstanding.
 
 (1) Assuming no purchase of common stock in this offering.
 
 (2) Includes 192,694 options.
 
 (3) Includes 6,422 options.
 
 (4) Includes 134,885 options.
 
 (5) Includes 77,000 options.
 
 (6) Includes 17,000 options.
 
 (7) Including 1,284 options.
 
 (8) Ms. Munro was elected to the board in April 1999.
 
 (9) Includes 17,000 options.
 
(10) Includes 10,500 options.
 
(11) Includes 21,000 options.
 
(12) Includes 18,000 options.
 
(13) Includes 11,500 options.
 
(14) Includes 13,000 options.
 
(15) Includes 545,973 options.
 
                                       70
<PAGE>   73
 
SUN'S SUBSIDIARY BANKS
 
<TABLE>
<CAPTION>
                                                   SOUTHERN    SUNRISE
                              CAMELBACK             ARIZONA     BANK     VALLEY FIRST
NAME AND ADDRESS OF           COMMUNITY    MESA    COMMUNITY     OF       COMMUNITY
BENEFICIAL OWNER                BANK       BANK      BANK      ARIZONA       BANK
-------------------           ---------   ------   ---------   -------   ------------
<S>                           <C>         <C>      <C>         <C>       <C>
Joseph D. Reid..............   28,577(1)  21,000(2)  26,000(3) 22,000(4)    33,000(5)
Michael L. Kasten...........    4,000(6)   4,000(7)   4,000(8)  4,000(9)     4,000(10)
John S. Lewis...............    1,800         --        --         --           --
Michael F. Hannley..........       --        100       100        100          100
Gary W. Hickel..............       --        100        --         --        4,500(11)
Sylvia Edmonds..............
Michael J. Devine...........      300        300       400        200           --
Richard N. Flynn............       --         --        --         --           --
Michael J. Harris...........       --         --        --         --           --
Humberto S. Lopez...........       --         --     7,143(12)     --           --
Kathryn L. Munro............       --         --        --         --           --
Ronald K. Sable.............      100        200       200        200           --
Gerry Smith.................       --         --        --         --           --
Lee W. Hendrickson..........      100        100       100        100           --
Patricia L. Stone...........       --         --       400         --           --
Leonard C. Zazula...........       --         --        --         --          200
Cristin Reid English........      150        100       100        100          100
Paige E. Mulhollan..........       --         --        --         --           --
Katherine P. Wait...........       --         --        --         --           --
All Officers and Directors
  as a Group (19 Persons)...   35,027(13) 25,900(14)  38,443(15) 26,700(16)    41,900(17)
</TABLE>
 
     Except where noted, share ownership represents less than 1% of the total
outstanding stock.
-------------------------
      (1) Includes 25,000 Camelback Community Bank options; represents
          approximately 8.8% of the outstanding stock.
 
      (2) Includes 20,000 Mesa options; represents approximately 6.5% of the
          outstanding stock.
 
      (3) Includes 25,000 Southern Arizona Community Bank options; represents
          approximately 7.5% of the outstanding stock.
 
      (4) Includes 20,000 Sunrise Bank of Arizona options; represents
          approximately 6.0% of the outstanding stock.
 
      (5) Includes 30,000 Valley First Community Bank options; represents
          approximately 9.6% of the outstanding stock.
 
      (6) Represents approximately 1.3% of the outstanding stock.
 
      (7) Represents approximately 1.3% of the outstanding stock.
 
      (8) Represents approximately 1.2% of the outstanding stock.
 
      (9) Represents approximately 1.1% of the outstanding stock.
 
                                       71
<PAGE>   74
 
     (10) Represents approximately 1.3% of the outstanding stock.
 
     (11) Includes 4,000 Valley First Community Bank options; represents
          approximately 2.4% of the outstanding stock.
 
     (12) Represents approximately 2.2% of the outstanding stock.
 
     (13) Includes 25,000 options; represents approximately 10.8% of the
          outstanding stock.
 
     (14) Includes 20,000 options; represents approximately 8.1% of the
          outstanding stock.
 
     (15) Includes 25,000 options; represents approximately 11.1% of the
          outstanding stock.
 
     (16) Includes 20,000 options; represents approximately 8.1% of the
          outstanding stock.
 
     (17) Includes 34,000 options; represents approximately 12% of the
          outstanding stock.
 
                                       72
<PAGE>   75
 
                           SUPERVISION AND REGULATION
 
     Bank holding companies and banks are extensively regulated under federal
and state law. References under this heading to applicable statutes or
regulations are brief summaries of portions thereof that do not purport to be
complete and that are qualified in their entirety by reference to those statutes
and regulations. Any change in applicable laws or regulations may have a
material adverse effect on Sun's business.
 
BANK HOLDING COMPANY REGULATION
 
     FEDERAL RESERVE BOARD.  Sun is subject to supervision by the Board of
Governors of the Federal Reserve System (the "Federal Reserve Board") under the
Bank Holding Company Act (the "BHC Act"). As a result, Sun is required to file
periodic reports, and other additional information as the Federal Reserve Board
may require, pursuant to the BHC Act. Sun is examined by the Federal Reserve
Board, which may also examine its banking and non-banking affiliates.
 
     ACQUISITIONS AND ACTIVITIES.  Under the BHC Act, Sun must obtain prior
Federal Reserve Board approval for the acquisition of more than 5% of the voting
shares, or substantially all the assets, of any bank or bank holding company.
Sun must also obtain approval for any merger or consolidation with another bank
holding company. With certain exceptions, the BHC Act prohibits Sun from
acquiring the voting shares or assets of any company that is not a bank or bank
holding company. It also prevents Sun from engaging in any activity other than
banking, managing or controlling banks, or performing services for its
authorized affiliates.
 
     Sun may, however, acquire an interest in a company or engage in an activity
if the Federal Reserve Board determines that it is so closely related to banking
or managing or controlling banks as to be a proper incident thereto. Even if a
specific activity has previously been approved, the Federal Reserve Board may
still order Sun to terminate the activity, or to terminate its ownership or
control of any subsidiary, if it constitutes a serious risk to the financial
safety, soundness or stability of any of Sun's banking subsidiaries.
 
     ACQUISITIONS OF BANKS.  Any person, including associates, affiliates and
groups acting in concert with the person, who purchases or subscribes for:
 
     - 5% or more of Sun's shares may be required to obtain prior approval of
       the Federal Reserve Board, or
 
     - 15% or more of Sun's shares may be required to obtain prior approval of
       both the Arizona Banking Department and the Federal Reserve Board.
 
     Under the Change in Bank Control Act, a person may be required to obtain
the prior regulatory approval of the Federal Deposit Insurance Corporation
("FDIC") and the Federal Reserve Board before acquiring the power to direct the
management, operations or policies of Sun or its banking affiliates. The person
may also be required to obtain approval before acquiring control of 25% or more
of any class of Sun or its affiliates' outstanding voting stock. In addition,
any corporation, partnership, trust or organized group that acquires a
controlling interest in Sun or its banking affiliates may have to obtain the
Federal Reserve Board's approval to become a bank holding company and as a
result will become subject to its regulations.
 
     CAPITAL ADEQUACY REQUIREMENTS.  Under Federal Reserve Board policy, Sun is
expected to act as a source of financial strength and commit resources to
support its
 
                                       73
<PAGE>   76
 
banking affiliates. It is the Federal Reserve Board's position that Sun must
provide support even when it would otherwise not consider itself able to do so.
 
     The Federal Reserve Board has adopted risk-based capital requirements for
assessing the capital adequacy of bank holding companies. These standards define
regulatory capital and establish minimum capital standards in relation to assets
and off-balance sheet exposures, as adjusted for credit risks. The Federal
Reserve Board's risk-based guidelines apply on a consolidated basis for bank
holding companies with consolidated assets of $150 million or more and on a
"bank-only" basis for bank holding companies with consolidated assets of less
than $150 million. Under the Federal Reserve Board's risk-based guidelines,
capital is classified into two categories:
 
     - Tier 1 or "core" capital, which consists of the following:
 
        - common shareholders' equity,
 
        - perpetual preferred stock,
 
        - minority interests in the common equity accounts of consolidated
          affiliates, and
 
        - certain other capital instruments.
 
        Tier 1 capital is reduced by goodwill, certain other intangible assets
        and certain investments in other corporations.
 
     - Tier 2 capital, which consists of the following:
 
        - allowance for loan and lease losses,
 
        - perpetual preferred stock,
 
        - "hybrid capital instruments,"
 
        - perpetual debt and mandatory convertible debt securities,
 
        - term subordinated debt,
 
        - intermediate term preferred stock, and
 
        - certain other capital instruments excluded from Tier 1 capital.
 
     Under the Federal Reserve Board's capital guidelines, bank holding
companies are required to maintain a minimum ratio of qualifying capital to
risk-weighted assets of 8.0%, of which at least 4.0% must be in the form of Tier
1 capital.
 
     The Federal Reserve Board also requires a minimum leverage ratio of Tier 1
capital to total assets of 3.0%, except that bank holding companies not rated in
the highest category under the regulatory rating system are required to maintain
a leverage ratio of 1.0% to 2.0% above the minimum. The 3.0% Tier 1 capital to
total assets ratio constitutes the minimum leverage standard for the strongest
bank holding companies under the rating system, and is used in conjunction with
the risk-based ratio in determining the overall capital adequacy of banking
organizations. In addition, the Federal Reserve Board continues to consider the
Tier 1 leverage ratio in evaluating proposals for expansion or new activities.
 
     In its capital adequacy guidelines, the Federal Reserve Board emphasizes
that these standards are supervisory minimums and that banking organizations
generally are expected to operate well above the minimum ratios. These
guidelines also provide that banking organizations experiencing internal growth
or making acquisitions are expected to maintain strong capital positions
substantially above the minimum levels.
 
                                       74
<PAGE>   77
 
     Sun's banking affiliates are subject to these requirements. They are also
subject to requirements of the FDIC, state banking regulatory agencies and other
agencies, whether as a condition of charter approval or other circumstances.
 
BANK REGULATION
 
     The deposits of Sun's affiliate banks are insured under the provisions of
the Federal Deposit Insurance Act, and as a result are subject to the FDIC's
supervision and examination. The FDIC supervises compliance with federal law and
regulations which place restrictions on loans between FDIC-insured banks and
their directors, executive officers and other controlling persons.
 
     Sun is also affected by the credit policies of other monetary authorities,
including the Federal Reserve Board, which regulate the national supply of bank
credit. These policies influence the overall growth of bank loans, investments,
and deposits and may also affect interest rates charged on loans and paid on
deposits. The monetary policies of the Federal Reserve Board have had a
significant effect on the operating results of commercial banks in the past and
are expected to continue to do so in the future.
 
FINANCIAL INSTITUTION REGULATION GENERALLY
 
     TRANSACTIONS WITH AFFILIATES.  State and federal regulatory agencies impose
various restrictions on transactions between a bank and its holding company or
other affiliates. These transactions include loans and other extensions of
credit, purchases of securities and other assets, and payments of fees or other
distributions. In general, these restrictions limit and/or prohibit the amount
of transactions between Sun and its affiliates. The restrictions also require
that transactions with affiliates be on terms comparable to those with
unaffiliated entities.
 
     LOANS TO DIRECTORS, EXECUTIVE OFFICERS AND PRINCIPAL SHAREHOLDERS.  Loans
between Sun and any of its directors, executive officers or principal
shareholders must be made on substantially the same terms as a comparable
transaction with a person who is not in the same position. This restriction does
not apply if the loan is made pursuant to a compensation or benefit plan that is
widely available to all of Sun's employees and does not favor insiders.
 
     All outstanding loans to Sun's executive officers, directors, principal
shareholders and affiliates generally may not exceed 15% of its unimpaired
capital and surplus for loans that are not fully secured and 10% of unimpaired
capital and surplus for loans that are fully secured by readily marketable
collateral. A majority of Sun's disinterested directors must approve any loans
to insiders in excess of the greater of $25,000 or 5% of capital and unimpaired
surplus.
 
     DIVIDEND LIMITATIONS.  As a bank holding company, Sun is primarily
dependent upon dividend distributions from its bank affiliates. A major source
of Sun's revenue comes from dividends received or expected to be received from
its bank affiliates. As a result, Sun's ability to pay dividends is likely to be
dependent on the amount of dividends paid by its bank affiliates. Sun's bank
affiliates are prohibited from paying dividends until start up losses are
recovered and a cumulative profit is made. No assurance can be given that Sun's
bank affiliates will, in any circumstances, pay dividends.
 
                                       75
<PAGE>   78
 
     Federal and state statutes and regulations impose restrictions on Sun's
ability to pay dividends:
 
     - Federal Reserve Board policy provides that a bank holding company should
       not pay dividends unless:
 
        - the bank holding company's net income over the prior year is
          sufficient to fully fund the dividends, and
 
        - the prospective rate of earnings retention appears consistent with the
          capital needs, asset quality and overall financial condition of the
          bank holding company and its affiliates,
 
     - Arizona law limits Sun's ability to pay dividends to its shareholders,
       especially if Sun is unable to pay its debts as they become due.
 
     In addition Sun's ability to pay dividends may be affected by the various
minimum capital requirements and the capital and non-capital standards
established under the Federal Deposit Insurance Corporation Improvements Act of
1991 ("FDICIA"). Sun's right and the right of its shareholders and creditors to
participate in any distribution of the assets or earnings of Sun's affiliates is
further subject to the prior claims of creditors of the affiliate.
 
     YEAR 2000 COMPLIANCE.  The federal banking agencies, through the Federal
Financial Institutions Examination Council, expect the senior management and
board of directors of banks and their holding companies to be actively involved
in overseeing the Year 2000 issue. The agencies expect active involvement in the
readiness and monitoring of business risks posed not only by vendors of computer
systems but business partners, counter parties, and major loan customers. The
OCC issued an advisory letter in May 1997 providing comprehensive Year 2000
guidance and establishing a schedule for banks to achieve Year 2000 compliance.
Senior management is expected to report at least quarterly to the board of
directors on Year 2000 compliance progress and to notify the board immediately
if critical benchmarks are missed.
 
     The agencies have indicated that Year 2000 readiness progress will be
required as a condition to regulatory approval of expansion proposals.
Enforcement actions may also be brought against banking organizations that have
inadequate Year 2000 readiness programs.
 
STANDARDS FOR SAFETY AND SOUNDNESS
 
     The FDIC requires the Federal Reserve Board, together with the other
federal bank regulatory agencies, to prescribe standards of safety and soundness
relating generally to operations and management, asset growth, asset quality,
earnings, stock valuation, and compensation. The federal bank regulatory
agencies have adopted a set of guidelines prescribing safety and soundness
standards pursuant to the FDICIA. The guidelines establish general standards
relating to:
 
     - internal controls and information systems,
 
     - internal audit systems,
 
     - loan documentation,
 
     - credit underwriting,
 
     - interest rate exposure,
 
     - asset growth,
 
                                       76
<PAGE>   79
 
     - compensation, and
 
     - fees and benefits.
 
     In general, the guidelines require appropriate systems and practices to
identify and manage the risks and exposures specified in the guidelines. The
guidelines prohibit excessive compensation as an unsafe and unsound practice.
Compensation is deemed excessive when the amount paid is unreasonable or
disproportionate to the services performed by an executive officer, employee,
director or principal shareholder.
 
     The Federal Reserve Board, FDIC and the Office of the Controller of the
Currency ("OCC") adopted regulations that authorize the agencies to order
non-complying institutions to submit a compliance plan. If the institution fails
to submit or implement an acceptable compliance plan, the applicable agency must
issue an order directing action to correct the deficiency. The agency may also
issue an order directing other actions of the types to which an undercapitalized
association is subject under the "prompt corrective action" provisions of the
FDICIA. If an institution fails to comply with such an order the agency may seek
to enforce it through judicial proceedings and impose civil money penalties. The
agencies may also propose guidelines for asset quality and earnings standards.
 
     A range of other provisions of the FDICIA include:
 
     - requirements applicable to closure of branches;
 
     - additional disclosures to depositors with respect to terms and interest
       rates applicable to deposit accounts;
 
     - uniform regulations for extensions of credit secured by real estate;
 
     - restrictions on activities of, and investments by, state-chartered banks;
 
     - modification of accounting standards to conform to generally accepted
       accounting principles including (1) the reporting of off-balance sheet
       items and (2) supplemental disclosure of the estimated fair market value
       of assets and liabilities in financial statements filed with the banking
       regulators;
 
     - increased penalties in making or failing to file assessment reports with
       the FDIC;
 
     - greater restrictions on extensions of credit to directors, officers and
       principal shareholders; and
 
     - increased reporting requirements on agricultural loans and loans to small
       businesses.
 
     The Federal Reserve Board, OCC, FDIC and other federal banking agencies'
risk-based capital standards provide for consideration of interest rate risk
when assessing the capital adequacy of a bank. The agencies must explicitly
include a bank's exposure to declines in the economic value of its capital due
to changes in interest rates as a factor in evaluating its capital adequacy. The
agencies have also adopted a joint agency policy statement providing guidance to
banks for managing interest rate risk. The policy statement emphasizes the
importance of adequate oversight by management and a sound risk management
process. The assessment of interest rate risk management made by the banks'
examiners will be incorporated into the banks' overall risk management rating
and used to determine the effectiveness of management.
 
     PROMPT CORRECTIVE ACTION.  The FDICIA requires the federal banking
regulators, including the Federal Reserve Board, the OCC and the FDIC, to take
prompt corrective action with respect to depository institutions that fall below
certain capital standards. It
 
                                       77
<PAGE>   80
 
also prohibits any depository institution from making any capital distribution
that would cause it to be undercapitalized.
 
     Institutions that are not adequately capitalized may be subject to a
variety of supervisory actions including the following:
 
     - restrictions on growth;
 
     - restrictions on investment activities;
 
     - restrictions on capital distributions;
 
     - restrictions on affiliate transactions; and
 
     - required to submit a capital restoration plan guaranteed in part by any
       company having control of the institution.
 
     In other respects, the FDICIA provides for enhanced supervisory authority,
including greater authority for the appointment of a conservator or receiver for
under-capitalized institutions. The capital-based prompt corrective action
provisions of the FDICIA and their implementing regulations apply to
FDIC-insured depository institutions. Federal banking agencies, however, have
indicated that they may take appropriate action at the holding company level
based on their assessment of the effectiveness of supervisory actions imposed
upon affiliate insured depository institutions pursuant to the prompt corrective
action provisions of the FDICIA.
 
     INSURANCE OF DEPOSIT ACCOUNTS.  The banks' deposits are insured by the FDIC
to the maximum amount permitted by law, which is currently $100,000 per
depositor in most cases. FDIC insurance premiums are assessed on a risk-based
system, meaning that the amount of a depositary institution's premium depends on
its risk classification. The FDIC has authority to raise or lower assessment
rates on insured deposits in order to achieve certain designated reserve ratios
in the insurance funds. The FDIC may also impose special additional assessments.
Each depository institution is assigned to one of three capital groups:
"well-capitalized," "adequately capitalized" or "undercapitalized". Within each
capital group, institutions are assigned to one of three subgroups. The
institution is assigned to a subgroup on the basis of supervisory evaluations by
the institution's primary supervisory authority and other information the FDIC
determines to be relevant to its financial condition and the risk posed to the
deposit insurance fund. An institution's assessment rate depends on the capital
category and supervisory category to which it is assigned.
 
     The FDIC's current assessment rate schedule for the Bank Insurance Fund
("BIF") provides an assessment rate of zero for well-capitalized institutions
with the highest supervisory ratings and the schedule calls for an assessment
rate of 0.27% of insured deposits for institutions in the lowest risk assessment
classification.
 
     COMMUNITY REINVESTMENT ACT.  Under the Community Reinvestment Act ("CRA"),
a financial institution has a continuing and affirmative obligation, consistent
with its safe and sound operation, to help meet the credit needs of its entire
community, including low and moderate income neighborhoods. The CRA does not
establish specific lending requirements or programs for financial institutions.
In addition, the CRA does not limit an institution's discretion to develop the
types of products and services that it believes are best suited to its
particular Community. The CRA requires each federal banking agency, in
connection with its examination of a financial institution, to assess and assign
one of four ratings to the institution's record of meeting the credit needs of
its community.
 
                                       78
<PAGE>   81
 
     The record is taken into account by a federal banking agency in its
evaluation of certain applications by the institution, including applications
for the following:
 
     - charters;
 
     - branches and other deposit facilities;
 
     - relocations;
 
     - mergers;
 
     - consolidations;
 
     - acquisitions of assets or assumptions of liabilities; and
 
     - savings and loan holding company acquisitions.
 
     The CRA also requires that all institutions make public disclosure of their
CRA ratings.
 
     In April 1995, the Federal Reserve Board, the OCC and other federal banking
agencies revised the CRA regulations. Among other things, the amended CRA
regulations substituted the prior process-based assessment factors with a new
evaluation system that rates an institution based on its actual performance in
meeting community needs. In particular, the evaluation system would focus on
three tests:
 
     - a lending test, to evaluate the institution's record of making loans in
       its assessment areas;
 
     - an investment test, to evaluate the institution's record of investing in
       community development projects, affordable housing, and programs
       benefiting low or moderate-income individuals and businesses; and
 
     - a service test, to evaluate the institution's availability and
       effectiveness of services through its branches, ATMs and other offices.
 
     The amended CRA regulations also clarified how an institution's CRA
performance would be considered in the application process.
 
     ENFORCEMENT ACTIONS.  Federal and state statutes and regulations provide
financial institution regulatory agencies with great flexibility to undertake
enforcement action against an institution that fails to comply with regulatory
requirements, particularly capital requirements.
 
     Possible enforcement actions include the following:
 
     - the imposition of a capital restoration plan and capital directive,
 
     - receivership,
 
     - conservatorship, or
 
     - the termination of deposit insurance.
 
     INTERSTATE BANKING AND BRANCHING LEGISLATION.  Under the Riegle-Neal
Interstate Banking and Branching Efficiency Act of 1994, adequately capitalized
and adequately managed bank holding companies are allowed to acquire banks
across state lines subject to certain limitations. It also permits banks to
merge with one another across state lines resulting in a main bank with branches
in separate states. After establishing branches in a state through an interstate
merger transaction, a bank could then establish and acquire
 
                                       79
<PAGE>   82
 
additional branches at any location in the state where any bank involved in the
interstate merger could have established or acquired branches under applicable
federal and state law.
 
MONETARY POLICY AND ECONOMIC CONDITIONS
 
     The earnings of banks and bank holding companies are affected by general
economic conditions and by the fiscal and monetary policies of federal
regulatory agencies, including the Federal Reserve Board. Through open market
transactions, variations in the discount rate and the establishment of reserve
requirements, the Federal Reserve Board exerts considerable influence over the
cost and availability of funds obtainable for lending or investing.
 
     The above monetary and fiscal policies and resulting changes in interest
rates have affected the operating results of all commercial banks in the past
and are expected to do so in the future. It is impossible to predict the nature
or the extent of any effects which fiscal or monetary policies may have on Sun's
business and earnings.
 
                          DESCRIPTION OF CAPITAL STOCK
 
     The following description of Sun's common stock does not purport to be
complete and is subject in all respects to applicable Arizona law and to the
provisions of Sun's Articles of Incorporation and Bylaws, copies of which have
been filed as exhibits to the Registration Statement of which this prospectus is
a part.
 
     Sun is authorized to issue 10,000,000 shares of common stock, no par value.
Upon completion of the offering, and assuming no exercise of the underwriters'
over-allotment option, there will be 5,728,870 shares of common stock issued and
outstanding. An additional 281,250 shares of common stock will be issuable upon
exercise of outstanding options granted or expected to be granted upon the
closing of the offering under the terms of Sun's stock option program. See
"Management-Stock Option Program." Prior to the offering, there are 3,853,870
shares of common stock outstanding. A proposal to amend Sun's Articles of
Incorporation to increase the number of authorized shares of common stock from
10,000,000 to 50,000,000 has been proposed for shareholder approval at Sun's
next annual meeting of shareholders.
 
COMMON STOCK
 
     Each holder of common stock is entitled to one vote per share of record on
all matters to be voted upon by the shareholders. Holders also have cumulative
voting rights in the election of directors, as provided under Arizona law. This
means that shareholders may multiply the total number of shares they are
entitled to vote by the total number of directors for whom they are entitled to
vote, and may apply that product to elect a single director or distribute that
product among two or more candidates. For example, at a meeting to elect three
directors, a shareholder holding 100 voting shares could cast 300 votes for a
single candidate, or could cast any combination totaling 300 votes for two or
more candidates. Arizona's cumulative voting rights may allow shareholders
holding a minority of Sun's shares a greater opportunity to elect a director
even though management or larger shareholders control a substantial percentage
of Sun's shares.
 
     Each share of common stock entitles the holder thereof to an equal and
ratable right to receive dividends when, if and as declared from time to time by
the board of directors out of legally available funds. Sun does not anticipate
paying cash dividends in the foreseeable future. See "Dividend Policy."
 
                                       80
<PAGE>   83
 
     In the event of the liquidation, dissolution or winding up of Sun, the
holders of common stock will be entitled to share ratably in all assets
remaining after payments to creditors. Holders of common stock have no
preemptive, conversion, or redemption rights and are not subject to further
calls or assessments by Sun. All of the shares of common stock to be issued and
sold in the offering will be, immediately upon consummation of the offering,
validly issued, fully paid and nonassessable.
 
AUTHORIZED BUT UNISSUED SHARES
 
     Authorized but unissued shares may be used for a variety of corporate
purposes, including future public or private offerings to raise capital or to
facilitate corporate acquisitions. One of the effects of the existence of
authorized but unissued shares may be to enable the board of directors to issue
shares to persons friendly to current management, which issuance could render
more difficult or discourage an attempt to obtain control of Sun by means of a
merger, tender offer, proxy contest or otherwise, and thereby protect the
continuity of Sun's management and possibly deprive the shareholders of
opportunities to sell their shares of common stock at prices higher than
prevailing market prices. This could have the effect of discouraging third
parties from making proposals involving an unsolicited acquisition or change in
control of Sun, although such proposals, if made, might be considered desirable
by a majority of Sun's shareholders.
 
PROPOSED AMENDMENT TO ARTICLES OF INCORPORATION
 
     Sun's board of directors has recommended to its shareholders the approval
of a proposal to amend Sun's Articles of Incorporation to increase the number of
authorized shares of common stock from 10,000,000 to 50,000,000.
 
     At December 31, 1998, there were 3,853,870 common shares outstanding. If
the amendment is adopted approximately 46,150,000 shares of common stock will be
authorized and unissued, before issuance of the shares of common stock being
offered hereby. At December 31, 1998, there were 560,973 stock options
outstanding which provide for the issuance of a like number of common shares, if
and when exercised. Except to the extent that Sun may issue additional common
shares upon exercise of stock options and the offering of common shares in this
offering, Sun has no commitments for issuance of additional common shares, but
wishes to have such shares available for future issuance as the need may arise.
No further shareholder approval would be required prior to the issuance of the
additional shares authorized by this amendment. Sun's shareholders will vote on
this matter at Sun's annual meeting of shareholders to be held on May 28, 1999.
Investors in common shares in this offering will not be eligible to vote at that
meeting.
 
     The proposed increase in the number of common shares authorized will have
no dilutive effect upon the proportionate voting power of the present
shareholders of Sun. However, to the extent common shares are subsequently
issued to persons other than present shareholders and/or in proportions other
than the proportion which presently exists, such issuance could have a
substantial dilutive effect on shareholders at that time. The proposed increase
would allow Sun's board of directors to issue additional shares in a share
exchange acquisition without a shareholder vote (except as required by law or
applicable rules of securities markets). While Sun has no present plans,
proposals, understandings or agreements for any such acquisition, issuance of
additional shares and a share exchange may have a dilutive effect not only on
the voting power but on the earnings per share and book value per share,
depending on the terms of a particular transaction.
 
                                       81
<PAGE>   84
 
     The future issuance of additional shares of common stock by Sun may also
have an anti-takeover effect by making it more difficult to obtain shareholder
approval of various actions, such as a merger. The proposed increase in the
number of common shares authorized could enable Sun's board of directors to make
an attempt by another person or entity to obtain control of the company more
difficult, though the board of directors has no present intention of issuing
additional shares for such purposes and has no present knowledge of any such
takeover efforts.
 
     Sun's board of directors believes that the increased number of common
shares contemplated by the proposed amendment to the Articles of Incorporation
is desirable to make additional shares available for issuance without further
shareholder authorization, except as may be required by law or by applicable
rules of securities markets. Increasing the number of shares authorized by the
Articles of Incorporation will not materially affect any substantive rights,
powers or privileges of holders of common shares. Sun's board of directors
believes that having such additional shares authorized and available for
issuance will allow Sun to have greater flexibility in considering potential
future actions involving the issuance of stock.
 
     Implementation of this proposed amendment to the Articles of Incorporation
requires approval by a majority of Sun's common shares eligible to vote thereon.
It is Sun's understanding that Capitol, Sun's majority and controlling
shareholder, intends to vote in favor of such proposal.
 
CERTAIN PROVISIONS OF ARTICLES OF INCORPORATION AND BYLAWS
 
     Sun's by-laws establish an advance notice procedure with regard to business
to be brought before an annual or special meeting of shareholders of Sun and
with regard to the nomination of candidates for election of directors, other
than by or at the direction of the board of directors. Although Sun's by-laws do
not give the board of directors any power to approve or disapprove shareholder
nominations for the election of directors or proposals for action, they may have
the effect of precluding a contest for the election of directors or the
consideration of shareholder proposals if the established procedures are not
followed, and of discouraging or deterring a third party from conducting a
solicitation of proxies to elect its own slate of directors or to approve its
own proposal without regard to whether consideration of such nominees or
proposals might be harmless or beneficial to Sun and its shareholders.
 
DIRECTOR'S LIABILITY
 
     Sun's Articles of Incorporation limit personal liability of directors, to
Sun or its shareholders, for monetary damages for breach of their fiduciary duty
as a director except to the extent such limitation of liability is not permitted
under Arizona law. Arizona law provides that the liability of a director may not
be eliminated or limited for: (1) transactions in which a director receives a
financial benefit to which the director is not entitled; (2) an intentional
infliction of harm on the corporation or the shareholders; (3) liability for
unlawful distributions in violation of Arizona law or the Articles of
Incorporation, or (4) an intentional violation of criminal law.
 
CERTAIN EFFECTS OF ARIZONA LAW
 
     Business Combinations.  Under Arizona law, any person who acquires 10% or
more of the voting power of the common stock of a corporation is considered an
"interested shareholder." For a period of three years after an acquisition,
certain business combinations
 
                                       82
<PAGE>   85
 
between Sun and the interested shareholder are prohibited, unless prior to the
acquisition of the common stock by the interested shareholder, a committee of
the "disinterested" directors approves the acquisition of the common stock or
the business combination. After the three-year period, only the following three
types of business combinations between Sun and the interested shareholder are
permitted:
 
     - a business combination approved by the board of directors before the
       acquisition of common stock by the interested shareholder;
 
     - a business combination approved by holders of a majority of the common
       stock not owned by the interested shareholder; and
 
     - a business combination which meets certain conditions relating to price
       and form of consideration.
 
     Control Share Acquisitions.  Under Arizona law, a party acquiring Sun's
common stock may lose the right to vote some or all of those shares if the
acquisitions results in that party holding greater than 20%, 33%, or 50% of the
outstanding common stock of Sun. An acquiring party can avoid losing the right
to vote these shares if the right to vote is approved by a majority of the
disinterested shareholders. If approval of the right to vote shares is obtained
at one of the specified levels, additional shareholder approvals are required
when a shareholder seeks to acquire the power to vote shares at the next level.
 
     In addition, unless otherwise provided in Sun's Articles of Incorporation
or By-laws approved by the shareholders, Sun may call for redemption of all but
not less than all of the acquiring party's common stock at a redemption price
equal to the market value of the shares at the time the call for redemption is
given if either:
 
     - the acquiring person fails to deliver certain written information to Sun
       by the tenth day after crossing any of the specified levels above; or
 
     - the shareholders vote not to accord voting rights to such shares.
 
     Limitation on Share Repurchases.  Under Arizona law, Sun may not purchase
or agree to purchase any shares of its common stock from a beneficial owner of
more than 5% of the voting power of Sun's common stock for more than the
"average market price" of the shares if the shares have been owned by the
beneficial owner for less than three years unless either:
 
     - the purchase or agreement to purchase is approved by shareholders holding
       a majority of the disinterested common stock; or
 
     - Sun makes an offer, of at least equal value per share, to all holders of
       the common stock of Sun.
 
INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     Sun's Articles of Incorporation provide that Sun shall indemnify to the
fullest extent allowed by Arizona law, any person who incurs liability or
expense by reason of that person acting as an officer or director of Sun.
Arizona law generally provides that indemnification is permissible only when the
director or officer acted in good faith and in a manner reasonably believed to
be in the best interests of the corporation and, with respect to any criminal
action or proceeding, had no reasonable cause to believe that the conduct was
unlawful. Indemnification of directors is precluded in connection with a
proceeding by or in the right of the corporation in which the director was held
liable to the corporation or in connection with any other proceeding charging
improper personal benefit to the director,
 
                                       83
<PAGE>   86
 
whether or not involving action in the director's official capacity, in which
the director was held liable on the basis that personal benefit was improperly
received by the director. In the opinion of the SEC, indemnification for
liabilities arising under the federal securities laws is unenforceable.
 
     FDIC regulations impose limitations on indemnification payments which could
restrict, in certain circumstances, payments by Sun or its banks to their
respective directors or officers that would otherwise be permitted or required
under Arizona law or Sun's Articles of Incorporation.
 
TRANSFER AGENT AND REGISTRAR
 
     The transfer agent and registrar for the common stock is              ,
city, state.
 
                                       84
<PAGE>   87
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
     Immediately prior to the offering, Sun had 3,853,870 shares of common stock
outstanding, 2,333,470 of which are held by "affiliates" of Sun. Upon completion
of the offering, Sun will have 5,728,870 shares of common stock outstanding,
excluding 842,223 shares of common stock issuable upon the exercise of
outstanding options. Of the shares outstanding upon completion of the offering,
a total of approximately 2,058,791 shares, including the shares sold pursuant to
the offering, will be freely tradeable without restriction under the Securities
Act. The remaining 3,670,079 shares outstanding upon the completion of the
offering may be resold publicly only upon registration under the Securities Act
or in compliance with an exemption from the registration requirements of the
Securities Act, such as Rule 144. Affiliates of Sun generally will be able to
sell shares of common stock only in accordance with the limitations or Rule 144
under the Securities Act.
 
     In general, under Rule 144 as currently in effect, a person (or persons
whose shares are aggregated), including an "affiliate" who has beneficially
owned "restricted" shares for at least one year, may sell in the open market
within any three-month period a number of shares that does not exceed the
greater of (1) one percent of the then outstanding shares of the Sun's common
stock (approximately 57,288 shares immediately following the offering assuming
no exercise of the underwriters" over-allotment option) or (2) the average
weekly trading volume of the common stock during the four calendar weeks
preceding the date on which notice of the sale is filed with the SEC. Sales
pursuant to Rule 144 are subject to certain requirements relating to manner of
sale, notice and availability of current public information about Sun. An
"affiliate" of Sun may sell securities that are not "restricted" without regard
to the period of beneficial ownership but subject to the volume limitations
described above and other conditions of Rule 144. A person (or persons whose
shares are aggregated) who is not deemed an "affiliate" of Sun (and has not been
at any time during the three months immediately preceding the sale) and who has
beneficially owned his or her shares for at least two years would be entitled to
sell such shares under Rule 144(k) without regard to the volume limitations,
manner of sale provisions, notice requirements, or availability of public
information described above.
 
     Capitol, Sun and the directors and executive officers of Sun (who are
expected to hold an aggregate of approximately 3,289,717 shares after the
offering, excluding the shares that they have a right to acquire pursuant to
options granted to them under Sun's Stock Option Program) have agreed, or will
agree, that they will not issue, offer for sale, sell, transfer, or otherwise
dispose of or register with the SEC any shares of common stock (or any
securities convertible into or exercisable for shares of common stock), for a
period of 180 days from the date of this prospectus without the prior written
consent of EVEREN Securities, Inc., except that (1) Sun may issue shares upon
the exercise of options under Sun's stock option program and (2) the directors
and officers may gift common stock owned by them to others who have agreed in
writing to be bound by the same agreement.
 
     As of January 1, 1999, there were outstanding options to purchase an
aggregate of 560,973 shares of Sun's common stock at exercise prices ranging
from $4.67 to $10.00 under Sun's Stock Option Program. See "Management -- Stock
Option Program." Resulting from this offering, Sun will grant additional options
to purchase 281,250 shares of Sun's common stock at an exercise price of $16.00.
 
     Prior to the offering, there has been no public trading market for Sun's
common stock, and no predictions can be made as to the effect, if any, that
sales of shares or the availability of shares for sale will have on the
prevailing market price of the common stock
 
                                       85
<PAGE>   88
 
after completion of the offering. Sales of substantial amounts of common stock
in the public market could have an adverse affect on prevailing market prices.
 
     Sun will apply for listing of its common shares on the Nasdaq National
Market(sm) under the symbol "SCBL."
 
                                       86
<PAGE>   89
 
                                  UNDERWRITING
 
     Subject to the terms and conditions of the Underwriting Agreement, the
underwriters named below, for whom EVEREN Securities, Inc, is acting as
representative (the "Representative") have severally agreed to purchase from
Sun, and Sun has agreed to sell to them, the respective number of shares of
common stock set forth opposite each underwriter's name below:
 
<TABLE>
<CAPTION>
                                                               NUMBER
UNDERWRITER                                                   OF SHARES
-----------                                                   ---------
<S>                                                           <C>
EVEREN Securities, Inc....................................
          Total...........................................    1,875,000
</TABLE>
 
     The Underwriting Agreement provides that the obligations of the several
underwriters thereunder are subject to approval of certain legal matters by
their counsel and to various other conditions. The nature of the underwriters'
obligation is such that they are committed to purchase and pay for all shares of
common stock if any are purchased.
 
     The underwriters propose to offer the shares of Sun's common stock directly
to the public at the initial public offering price set forth on the cover page
of this prospectus, and to certain securities dealers (who may include the
underwriters) at such price, less a concession not in excess of $     per share
of common stock. The underwriters may allow, and such selected dealers may
reallow, a concession not in excess of $     per share of common stock to
certain brokers and dealers. After this offering, the price to the public,
concession, allowance and reallowance may be changed by the Representative. The
Representative has informed Sun that it does not intend to confirm sales to any
account over which it exercises discretionary authority.
 
     At Sun's request, the underwriters have agreed that 956,250 of the shares
offered hereby will be sold to Capitol at the initial public offering price in
order to enable Capitol to maintain its 51% ownership in Sun in accordance with
the anti-dilution agreement between Sun and Capitol. Accordingly, the number of
shares of common stock available for sale to the general public will be reduced.
There will be no underwriting discount with respect to the shares sold to
Capitol.
 
     Sun has granted the underwriters an option, exercisable during the 30-day
period after the date of this prospectus, to purchase up to 281,250 additional
shares of common stock at the same price per share as Sun will receive for the
1,875,000 shares that the underwriters have agreed to purchase solely to cover
over-allotments, if any. To the extent that the underwriters exercise this
option, each of the underwriters will be committed, subject to certain
conditions, to purchase such additional shares of common stock in approximately
the same proportions as set forth in the above table. If purchased, the
underwriters will sell the additional shares on the same terms as the 1,875,000
shares are being sold, including an agreement that 51% of these shares will also
be sold to Capitol at the initial public offering price. If the underwriters
exercise the over-allotment option in full, the total public offering price will
be $     , total underwriting discounts and commissions will be $     and total
proceeds to Sun will be $     .
 
     The offering of the common stock is made for delivery when, as and if
accepted by the underwriters and subject to prior sale and to withdrawal,
cancellation or modification of the offering without notice. The underwriters
reserve the right to reject any order for the purchase of common stock.
 
                                       87
<PAGE>   90
 
     Subject to certain exceptions, Sun has agreed not to issue, and each of its
officers and directors (and certain shareholders of Sun) has agreed not to
offer, sell or otherwise dispose of any of Sun's shares of common stock for a
period of 180 days after the date of this prospectus (other than shares sold
pursuant to this prospectus) without the prior written consent of EVEREN
Securities. Capitol has also agreed to the same restrictions with respect to its
shares of Sun common stock, including the shares Capitol will be purchasing in
this offering.
 
     Sun has agreed to indemnify the underwriters against certain liabilities
under the Securities Act, or to contribute to payments the underwriters may be
required to make in respect thereof.
 
     Prior to this offering, there has been no public market for Sun's common
stock. Consequently, Sun negotiated the initial public offering price with the
underwriters. Among the factors considered in such negotiations were:
 
     - Prevailing market conditions;
 
     - An assessment of management;
 
     - Sun's results of operations in recent periods;
 
     - The present stage of Sun's development;
 
     - The market capitalization of stages in development of other companies
       which Sun and the Representative believe to be comparable to Sun; and
 
     - Estimates of Sun's business potential.
 
     There can be no assurance that an active trading market will develop for
Sun's common stock or that Sun's common stock will trade in the public market
subsequent to this offering at or above the initial public offering price. The
initial public offering price should not be considered an indication of the
actual value of Sun's common stock. Such price is subject to change as a result
of market conditions and other factors. Sun cannot assure you that its common
stock can be resold at or above the initial public offering price.
 
     In order to facilitate this offering, certain persons participating in this
offering may engage in transactions that stabilize, maintain or otherwise affect
the price of Sun's common stock during and after the offering, such as the
following:
 
     - The underwriters may over-allot or otherwise create a short position in
       the common stock for its own account by selling more shares of common
       stock than may have been sold to them.
 
     - The underwriters may elect to cover any such short position by purchasing
       shares of common stock in the open market or by exercising the
       over-allotment option;
 
     - The underwriters may stabilize or maintain the price of Sun's common
       stock by bidding for or purchasing shares of common stock in the open
       market;
 
     - The underwriters may engage in passive market making transactions; and
 
     - The underwriters may impose penalty bids, under which selling concessions
       allowed to syndicate members of other broker-dealers participating in
       this offering are reclaimed if shares of common stock previously
       distributed in the offering are repurchased in connection with
       stabilization transactions or otherwise.
 
     The effect of these transactions may be to stabilize or maintain the market
price at a level above that which might otherwise prevail in the open market.
The imposition of a
 
                                       88
<PAGE>   91
 
penalty bid may also affect the price of Sun's common stock to the extent that
it discourages resales thereof. No representation is made as to the magnitude of
effect of any such stabilization or other transactions. Such transactions may be
effected on the Nasdaq National Market or otherwise and, if commenced, may be
discontinued at any time.
 
                                       89
<PAGE>   92
 
                                 LEGAL MATTERS
 
     The validity of the common stock offered in this prospectus is being passed
upon for Sun by Snell & Wilmer L.L.P., Phoenix, Arizona. Certain legal matters
will be passed upon for the underwriters by Vedder, Price, Kaufman & Kammholz,
Chicago, Illinois.
 
                                    EXPERTS
 
     The consolidated balance sheets as of December 31, 1998 and 1997 and the
statements of operations, cash flows and changes in stockholders' equity for the
years ended December 31, 1998 and 1997 of Sun included in this prospectus have
been included in reliance on the report of BDO Siedman, LLP, independent
accountants, given on the authority of that firm as experts in accounting and
auditing. Consolidated financial information of Sun for the period ended
December 31, 1996 included in this prospectus have been included in reliance on
the report of Cotton, Parker, Johnson & Co. P.C., independent accountants, given
on the authority of that firm as experts in accounting and auditing.
 
                                       90
<PAGE>   93
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     Sun has filed with the SEC a registration statement on Form S-1 under the
Securities Act and the rules and regulations promulgated thereunder with respect
to the common stock being offered hereby. This prospectus omits certain
information contained in the registration statement or in any amendments to the
registration statement, and you should look at the registration statement and
the exhibits and schedules thereto for further information with respect to Sun
and the common stock being offered hereby. Statements contained in this
prospectus describing the provisions or contents of any contract, agreement or
any other document are not necessarily complete with respect to each such
contract, agreement or document filed as an exhibit to the registration
statement, and reference is made to the exhibit for a more complete description
of the matters involved.
 
     A copy of the registration statement, including the exhibits and schedules
thereto, and any other documents Sun may file may be inspected without charge at
the SEC's Public Reference Room at 450 Fifth Street, N.W., Washington, D.C.
20549. Copies of the registration statement and the exhibits and schedules
thereto can be obtained from the Public Reference Room upon payment of
prescribed fees. You may obtain information on the operation of the Public
Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an
Internet web site that contains reports, proxy information and statements and
other information regarding issuers that file electronically with the SEC. Sun's
filings with the SEC are available to the public at the site which is
http://www.sec.gov.
 
     Prior to filing the registration statement of which this prospectus is a
part, Sun was not subject to the reporting requirements of Section 13 or 15(d)
of the Securities Exchange Act of 1934. Upon effectiveness of the registration
statement, Sun will become subject to the informational and periodic reporting
requirements of the Exchange Act, and in accordance therewith, will file
periodic reports, proxy statements and other information with the SEC. Such
periodic reports, proxy statements and other information will be available for
inspection and copying at the public reference facility referenced above. Sun
intends to register the securities offered by the registration statement under
the Exchange Act simultaneously with the effectiveness of the registration
statement and to furnish Sun's shareholders with annual reports containing
financial statements examined and reported on by Sun's independent public
accountants, and quarterly reports for the first three fiscal quarters of each
fiscal year containing unaudited interim financial information.
 
                                       91
<PAGE>   94
 
                         INDEX TO FINANCIAL STATEMENTS
 
                 SUN COMMUNITY BANCORP LIMITED AND SUBSIDIARIES
                       CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
FINANCIAL STATEMENTS                                          PAGE
--------------------                                          ----
<S>                                                           <C>
Condensed Consolidated Interim Financial Statements
  (unaudited)
  Consolidated Balance Sheets as of March 31, 1999 and
     December 31, 1998......................................   F-2
  Consolidated Statements of Operations for the Three Months
     ended March 31, 1999 and 1998..........................   F-4
  Consolidated Statements of Changes in Stockholders' Equity
     for the Three Months ended March 31, 1999 and 1998.....   F-6
  Consolidated Statements of Cash Flows for the Three Months
     ended March 31, 1999 and 1998..........................   F-7
  Notes to Consolidated Interim Financial
     Statements -- March 31, 1999 and 1998..................   F-8
Audited Consolidated Financial Statements
  Independent Auditors' Reports.............................  F-10
  Consolidated Balance Sheets as of December 31, 1998 and
     1997...................................................  F-12
  Consolidated Statements of Operations for the Years ended
     December 31, 1998 and 1997 and the period ended
     December 31, 1996......................................  F-14
  Consolidated Statements of Changes in Stockholders' Equity
     for the Years ended December 31, 1998 and 1997 and the
     period ended December 31, 1996.........................  F-16
  Consolidated Statements of Cash Flows for the Years ended
     December 31, 1998 and 1997 and the period ended
     December 31, 1996......................................  F-17
  Notes to Consolidated Financial Statements -- December 31,
     1998...................................................  F-18
</TABLE>
 
                                       F-1
<PAGE>   95
 
                          CONSOLIDATED BALANCE SHEETS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                       MARCH 31     DECEMBER 31
                                                         1999           1998
                                                     ------------   ------------
                                                             (UNAUDITED)
<S>                                                  <C>            <C>
ASSETS
Cash and due from banks............................  $  9,461,357   $  9,902,458
Interest-bearing deposits with banks...............     3,768,680        858,955
Federal funds sold.................................    37,700,000     37,600,000
                                                     ------------   ------------
  Cash and cash equivalents........................    50,930,037     48,361,413
Loans held for resale..............................     2,789,253      1,275,788
Investment securities available for sale, carried
  at market value..................................    14,428,325     12,922,539
Portfolio loans:
  Commercial.......................................    77,596,397     60,366,282
  Real estate mortgage.............................     4,555,965      4,371,401
  Installment......................................     4,014,413      3,342,226
                                                     ------------   ------------
          Total portfolio loans....................    86,166,775     68,079,909
  Less allowance for loan losses...................      (905,000)      (696,000)
                                                     ------------   ------------
          Net portfolio loans......................    85,261,775     67,383,909
Premises and equipment, net........................     2,935,614      2,753,721
Accrued interest income............................       617,933        448,331
Other assets.......................................     2,158,238      2,432,336
                                                     ------------   ------------
          TOTAL ASSETS.............................  $159,121,175   $135,578,037
                                                     ============   ============
LIABILITIES AND STOCKHOLDERS' EQUITY
Deposits:
  Noninterest-bearing..............................  $ 29,314,830   $ 28,033,128
  Interest-bearing.................................    93,298,665     70,748,676
                                                     ------------   ------------
          Total deposits...........................   122,613,495     98,781,804
Accrued interest on deposits and other
  liabilities......................................     1,099,385        757,879
                                                     ------------   ------------
          Total liabilities........................   123,712,880     99,539,683
MINORITY INTEREST IN CONSOLIDATED SUBSIDIARIES.....     9,279,713      9,411,272
STOCKHOLDERS' EQUITY
Common stock, no par value, 10,000,000 shares
  authorized; issued and outstanding:
  1999 -- 3,853,870 shares
  1998 -- 3,847,060 shares.........................    26,866,516     26,795,416
Retained-earnings deficit..........................      (741,654)      (179,673)
</TABLE>
 
                                       F-2
<PAGE>   96
 
<TABLE>
<CAPTION>
                                                       MARCH 31     DECEMBER 31
                                                         1999           1998
                                                     ------------   ------------
                                                             (UNAUDITED)
<S>                                                  <C>            <C>
Market value adjustment (net of tax effect) for
  investment securities available for sale
  (accumulated other comprehensive income).........         3,720         11,339
                                                     ------------   ------------
          Total stockholders' equity...............    26,128,582     26,627,082
                                                     ------------   ------------
          TOTAL LIABILITIES AND
          STOCKHOLDERS' EQUITY.....................  $159,121,175   $135,578,037
                                                     ============   ============
</TABLE>
 
See notes to consolidated interim financial statements
 
                                       F-3
<PAGE>   97
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                                 THREE MONTHS ENDED
                                                                      MARCH 31
                                                              ------------------------
                                                                 1999          1998
                                                              ----------    ----------
                                                                    (UNAUDITED)
<S>                                                           <C>           <C>
Interest income:
  Portfolio loans (including fees)..........................  $2,258,024    $  912,947
  Loans held for resale.....................................      28,475
  Taxable investment securities.............................     199,610       185,101
  Federal funds sold........................................     460,626       236,966
  Interest-bearing deposits with banks and other............      28,794
                                                              ----------    ----------
          Total interest income.............................   2,975,529     1,335,014
Interest expense:
  Demand deposits...........................................     546,280       269,946
  Savings deposits..........................................       3,164         1,741
  Time deposits.............................................     336,139       122,922
  Other.....................................................         308
                                                              ----------    ----------
          Total interest expense............................     885,891       394,609
                                                              ----------    ----------
          Net interest income...............................   2,089,638       940,405
Provision for loan losses...................................     209,000        41,000
                                                              ----------    ----------
          Net interest income after provision for loan
            losses..........................................   1,880,638       899,405
Noninterest income:
  Service charges on deposit accounts.......................      70,542         7,565
  Other.....................................................      48,033        20,979
                                                              ----------    ----------
          Total noninterest income..........................     118,575        58,544
Noninterest expense:
  Salaries and employee benefits............................   1,410,161       409,198
  Occupancy.................................................     241,094        76,083
  Equipment rent, depreciation and maintenance..............     246,340        88,636
  Deposit insurance premiums................................       2,133           965
  Other.....................................................     563,520       220,376
                                                              ----------    ----------
          Total noninterest expense.........................   2,463,248       795,258
                                                              ----------    ----------
          Income (loss) before federal income taxes,
            minority interest and cumulative effect of
            change in accounting principle..................    (464,035)      162,691
                                                              ----------    ----------
Federal income taxes (benefit)..............................     (64,000)       75,000
  Net income (loss) before minority interest and cumulative
     effect of change in accounting principle...............    (400,035)       87,691
Minority interest in net losses of consolidated
  subsidiaries..............................................     224,282        29,742
                                                              ----------    ----------
  NET INCOME (LOSS) BEFORE CUMULATIVE EFFECT OF ACCOUNTING
     CHANGE.................................................    (175,753)      117,433
Change in accounting principle, net of income tax effect of
  $200,000 -- Note B........................................    (386,228)
                                                              ----------    ----------
  NET INCOME (LOSS).........................................  $ (561,981)   $  117,433
                                                              ==========    ==========
</TABLE>
 
                                       F-4
<PAGE>   98
 
<TABLE>
<CAPTION>
                                                                 THREE MONTHS ENDED
                                                                      MARCH 31
                                                              ------------------------
                                                                 1999          1998
                                                              ----------    ----------
<S>                                                           <C>           <C>
  NET INCOME (LOSS) PER SHARE -- Note D:
  Before cumulative effect of change in accounting principle
     Basic..................................................  $    (0.05)   $     0.04
                                                              ==========    ==========
     Diluted................................................  $    (0.05)   $     0.04
                                                              ==========    ==========
  After cumulative effect of change in accounting principle
     Basic..................................................  $    (0.15)   $     0.04
                                                              ==========    ==========
     Diluted................................................  $    (0.15)   $     0.04
                                                              ==========    ==========
</TABLE>
 
See notes to consolidated interim financial statements.
 
                                       F-5
<PAGE>   99
 
           CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
 
                         SUN COMMUNITY BANCORP LIMITED
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                          ACCUMULATED
                                                            RETAINED-        OTHER
                                               COMMON       EARNINGS     COMPREHENSIVE
                                                STOCK        DEFICIT        INCOME           TOTAL
                                             -----------    ---------    -------------    -----------
<S>                                          <C>            <C>          <C>              <C>
BALANCES AT JANUARY 1, 1998................  $ 9,863,512    $(236,351)      $62,725       $ 9,689,886
  Issuance of 954,546 shares of common
     stock for cash consideration of
     $7.3333 per share in conjunction with
     formation of bank subsidiary..........    7,000,004                                    7,000,004
Components of comprehensive income:
  Net income for March 31, 1998............                   117,433                         117,433
  Market value adjustment (net of tax
     effect) for investment securities
     available for sale....................                                  (3,986)           (3,986)
                                                                            -------       -----------
  Total comprehensive income for period
     ended March 31, 1998..................                                                   113,447
                                             -----------    ---------       -------       -----------
BALANCES AT MARCH 31, 1998.................  $16,863,516    $(118,918)      $58,739       $16,803,337
                                             ===========    =========       =======       ===========
BALANCES AT JANUARY 1, 1999................  $26,795,416    $(179,673)      $11,339       $26,627,082
Issuance of 6,810 shares of common stock
  for cash consideration...................       71,100                                       71,100
Components of comprehensive income (loss):
  Net loss for three months ended March 31,
     1999..................................                  (561,981)                       (561,981)
  Market value adjustment (net of tax
     effect) for investment securities
     available for sale....................                                  (7,619)           (7,619)
                                                                            -------       -----------
  Total comprehensive income (loss) for
     period ended March 31, 1999...........                                                  (569,600)
                                             -----------    ---------       -------       -----------
BALANCES AT MARCH 31, 1999.................  $26,866,516    $(741,654)      $ 3,720       $26,128,582
                                             ===========    =========       =======       ===========
</TABLE>
 
See notes to consolidated interim financial statements.
 
                                       F-6
<PAGE>   100
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                         THREE MONTHS ENDED
                                                              MARCH 31
                                                     ---------------------------
                                                         1999           1998
                                                     ------------    -----------
                                                             (UNAUDITED)
<S>                                                  <C>             <C>
OPERATING ACTIVITIES
  Net income (loss) for the period.................  $   (561,981)   $   117,433
  Adjustments to reconcile net income to net cash
     provided (used) by operating activities:
     Minority interest in net losses of
       consolidated subsidiaries...................      (224,282)       (29,742)
     Provision for loan losses.....................       209,000         41,000
     Depreciation of premises and equipment........       338,190         70,054
     Net accretion of investment security
       premiums....................................       (71,522)        (5,875)
     Cumulative effect of accounting change........      (386,228)
  Originations of loans held for resale............   (11,084,478)
  Proceeds from sales of loans held for resale.....     9,571,013
  Increase in accrued interest income and other
     assets........................................       359,166       (431,032)
  Increase in accrued interest on deposits and
     other liabilities.............................       213,870        (77,081)
                                                     ------------    -----------
          NET CASH USED BY OPERATING ACTIVITIES....    (1,637,252)      (315,243)
INVESTING ACTIVITIES
  Proceeds from maturities of investment securities
     available for sale............................    15,341,000      1,750,000
  Purchases of investment securities available for
     sale..........................................   (16,786,807)    (4,481,461)
  Net increase in portfolio loans..................   (18,086,866)    (4,418,196)
  Purchases of premises and equipment..............      (520,083)       (24,854)
                                                     ------------    -----------
          NET CASH USED BY INVESTING ACTIVITIES....   (20,052,756)    (7,174,511)
FINANCING ACTIVITIES
  Net increase in demand deposits, NOW accounts and
     savings accounts..............................    17,042,694     11,323,639
  Net increase in certificates of deposit..........     6,788,997      1,100,271
  Net proceeds from issuance of common stock.......        71,100      7,000,004
  Resources provided by minority interests.........       355,841
                                                     ------------    -----------
          NET CASH PROVIDED BY FINANCING
             ACTIVITIES............................    24,258,632     19,423,914
                                                     ------------    -----------
          INCREASE IN CASH AND CASH EQUIVALENTS....     2,568,624     11,934,160
Cash and cash equivalents at January 1.............    48,361,413     10,131,093
                                                     ------------    -----------
CASH AND CASH EQUIVALENTS AT MARCH 31..............  $ 50,930,037    $22,065,253
                                                     ============    ===========
</TABLE>
 
See notes to consolidated interim financial statements.
 
                                       F-7
<PAGE>   101
 
         NOTES TO CONSOLIDATED INTERIM FINANCIAL STATEMENTS (UNAUDITED)
                           SUN COMMUNITY BANCORP LTD.
                                 MARCH 31, 1999
 
NOTE A -- BASIS OF PRESENTATION
 
     The accompanying condensed consolidated financial statements of Sun
Community Bancorp Ltd. have been prepared in accordance with generally accepted
accounting principles for interim financial information. Accordingly, they do
not include all information and footnotes necessary for a fair presentation of
consolidated financial position, results of operations and cash flows in
conformity with generally accepted accounting principles.
 
     The statements do, however, include all adjustments of a normal recurring
nature (in accordance with Rule 10-01(b)(8) of Regulation S-X) which the
Corporation considers necessary for a fair presentation of the interim periods.
 
     The results of operations for the three-month period ended March 31, 1999
are not necessarily indicative of the results to be expected for the year ending
December 31, 1999.
 
     The consolidated balance sheet as of December 31, 1998 was derived from
audited consolidated financial statements as of that date.
 
NOTE B -- IMPLEMENTATION OF NEW ACCOUNTING STANDARD
 
     In 1998, the American Institute of CPAs issued Statement of Position 98-5,
"Reporting on the Costs of Start-Up Activities". It requires start-up costs and
organizational costs to be charged to expense when incurred. The initial
application of the statement requires a cumulative effect adjustment for those
companies that had previously capitalized start-up and organization costs and
became effective in 1999. In the circumstances of the Corporation and its banks,
this new accounting standard applies to previously capitalized preopening and
other start-up costs of its bank subsidiaries which, net of amortization,
approximated $1,149,000 at December 31, 1998 and were classified as a component
of other assets in the consolidated balance sheet. Implementation of this
standard is reflected as a cumulative effect adjustment (net of income tax
effect) of approximately $386,000 charged to first quarter 1999 results of
operations.
 
NOTE C -- NEW SUBSIDIARY
 
     Nevada Community Bancorp Limited ("NCBL") was incorporated by the
Corporation in early 1999. NCBL has been formed for the purpose of becoming a
bank holding company to facilitate formation of de novo banks to be located in
the state of Nevada.
 
                                       F-8
<PAGE>   102
         NOTES TO CONSOLIDATED INTERIM FINANCIAL STATEMENTS (UNAUDITED)
                   SUN COMMUNITY BANCORP LTD. -- (CONTINUED)
 
NOTE D -- NET INCOME (LOSS) PER SHARE
 
     The computations of basic and diluted net income (loss) per share were as
follows:
 
<TABLE>
<CAPTION>
                                                           THREE MONTHS ENDED
                                                                MARCH 31
                                                        ------------------------
                                                           1999          1998
                                                        ----------    ----------
<S>                                                     <C>           <C>
Numerator -- net income (loss) for the period.........  $ (561,981)   $  117,433
                                                        ==========    ==========
Denominator:
Weighted average number of common shares outstanding
  (denominator for basic earnings per share)..........   3,853,870     2,853,070
Dilutive effect of stock options......................          --(1)     86,638
                                                        ----------    ----------
Denominator for diluted net income per
  share -- Weighted average number of common shares
  and potential dilution..............................   3,853,870     2,939,708
                                                        ==========    ==========
Basic net income (loss) per share.....................  $    (0.15)   $     0.04
                                                        ==========    ==========
Diluted net income (loss) per share...................  $    (0.15)   $     0.04
                                                        ==========    ==========
</TABLE>
 
-------------------------
(1) Antidilutive for period presented
 
                                       F-9
<PAGE>   103
 
                          INDEPENDENT AUDITORS' REPORT
 
Board of Directors and Stockholders
Sun Community Bancorp Ltd.
 
     We have audited the accompanying consolidated balance sheets of Sun
Community Bancorp Ltd. and subsidiaries as of December 31, 1998 and 1997, and
the related consolidated statements of operations, changes in stockholders'
equity and cash flows for the years then ended. 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 of 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 Sun
Community Bancorp Ltd. and subsidiaries at December 31, 1998 and 1997, and the
consolidated results of operations and their cash flows for the years then
ended, in conformity with generally accepted accounting principles.
 
BDO SEIDMAN LLP
Grand Rapids, Michigan
April 19, 1999
 
                                      F-10
<PAGE>   104
 
                          INDEPENDENT AUDITORS' REPORT
 
Board of Directors and Stockholders
Sun Community Bancorp Ltd.
 
     We have audited the balance sheet of Bank of Tucson as of December 31,
1996, and the related statements of operations, changes in stockholders' equity
and cash flows for the period then ended. These financial statements are the
responsibility of the Bank's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
     We conducted our audit 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 of 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 financial statements referred to above present fairly,
in all material respects, the financial position of Bank of Tucson at December
31, 1996, and its results of operations and cash flows for the period then
ended, in conformity with generally accepted accounting principles.
 
COTTON, PARKER, JOHNSON & CO., P.C.
Tucson, Arizona
March 18, 1997
 
                                      F-11
<PAGE>   105
 
                          CONSOLIDATED BALANCE SHEETS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31
                                                       --------------------------
                                                           1998          1997
                                                       ------------   -----------
<S>                                                    <C>            <C>
ASSETS
Cash and due from banks..............................  $  9,902,458   $ 2,822,138
Interest-bearing deposits with banks.................       858,955         8,955
Federal funds sold...................................    37,600,000     7,300,000
                                                       ------------   -----------
          Cash and cash equivalents..................    48,361,413    10,131,093
Loans held for resale................................     1,275,788
Investment securities available for sale, carried at
  market value -- Note C.............................    12,922,539    11,533,667
Portfolio loans -- Notes D and G:
  Commercial.........................................    60,366,282    26,061,673
  Real estate mortgage...............................     4,371,401     2,607,231
  Installment........................................     3,342,226     2,567,569
                                                       ------------   -----------
          Total portfolio loans......................    68,079,909    31,236,473
  Less allowance for loan losses.....................      (696,000)     (317,000)
                                                       ------------   -----------
          Net portfolio loans........................    67,383,909    30,919,473
Premises and equipment, net -- Note E................     2,753,721     1,190,190
Accrued interest income..............................       448,331       337,604
Other assets.........................................     2,432,336       895,165
                                                       ------------   -----------
          TOTAL ASSETS...............................  $135,578,037   $55,007,192
                                                       ============   ===========
LIABILITIES AND STOCKHOLDERS' EQUITY
Deposits:
  Noninterest-bearing................................  $ 28,033,128   $ 9,558,830
  Interest-bearing -- Note H.........................    70,748,676    33,339,741
                                                       ------------   -----------
          Total deposits.............................    98,781,804    42,898,571
Accrued interest on deposits and other liabilities...       757,879       408,898
                                                       ------------   -----------
          Total liabilities..........................    99,539,683    43,307,469
MINORITY INTEREST IN CONSOLIDATED
  SUBSIDIARIES -- Note A.............................     9,411,272     2,009,837
STOCKHOLDERS' EQUITY -- Notes A, I and M:
Common stock, no par value, 10,000,000 shares
  authorized; issued and outstanding:
     1998 -- 3,847,060 shares
     1997 -- 1,899,324 shares........................    26,795,416     9,863,512
</TABLE>
 
                                      F-12
<PAGE>   106
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31
                                                       --------------------------
                                                           1998          1997
                                                       ------------   -----------
<S>                                                    <C>            <C>
Retained-earnings deficit............................      (179,673)     (236,351)
Market value adjustment (net of tax effect) for
  investment securities available for sale
  (accumulated other comprehensive income)...........        11,339        62,725
                                                       ------------   -----------
          Total stockholders' equity.................    26,627,082     9,689,886
                                                       ------------   -----------
          TOTAL LIABILITIES AND STOCKHOLDERS'
             EQUITY..................................  $135,578,037   $55,007,192
                                                       ============   ===========
</TABLE>
 
See notes to consolidated financial statements.
 
                                      F-13
<PAGE>   107
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                                         PERIOD
                                            YEAR ENDED DECEMBER 31        ENDED
                                           ------------------------    DECEMBER 31
                                              1998          1997          1996
                                           ----------    ----------    -----------
<S>                                        <C>           <C>           <C>
Interest income:
  Portfolio loans (including fees).......  $5,296,379    $1,845,741     $ 113,670
  Loans held for resale..................      30,062
  Taxable investment securities..........     762,717       735,930       186,172
  Federal funds sold.....................   1,230,361       289,742        45,532
  Interest-bearing deposits with banks
     and other...........................      24,880                       8,671
                                           ----------    ----------     ---------
          Total interest income..........   7,344,399     2,871,413       354,045
Interest expense:
  Demand deposits........................   1,427,457       625,931        73,621
  Savings deposits.......................       9,460         6,433           284
  Time deposits..........................     843,630       281,880        40,888
  Other..................................         252           338         8,226
                                           ----------    ----------     ---------
          Total interest expense.........   2,280,799       914,582       123,019
                                           ----------    ----------     ---------
          Net interest income............   5,063,600     1,956,831       231,026
Provision for loan losses -- Note D......     379,000       268,000        49,000
                                           ----------    ----------     ---------
          Net interest income after
             provision for loan losses...   4,684,600     1,688,831       182,026
Noninterest income:
  Service charges on deposit accounts....     223,812        87,326         7,607
  Other..................................     110,452        38,156         2,343
                                           ----------    ----------     ---------
          Total noninterest income.......     334,264       125,482         9,950
Noninterest expense:
  Salaries and employee benefits.........   2,673,277     1,020,608       246,710
  Occupancy..............................     545,639       179,055        23,688
  Equipment rent, depreciation and
     maintenance.........................     557,509       173,419        33,663
  Deposit insurance premiums.............       5,555           749         1,000
  Other..................................   1,547,931       662,892       135,392
                                           ----------    ----------     ---------
          Total noninterest expense......   5,329,911     2,036,723       440,453
                                           ----------    ----------     ---------
          Income (loss) before federal
             income taxes and minority
             interest....................    (311,047)     (222,410)     (248,477)
</TABLE>
 
                                      F-14
<PAGE>   108
 
<TABLE>
<CAPTION>
                                                                         PERIOD
                                            YEAR ENDED DECEMBER 31        ENDED
                                           ------------------------    DECEMBER 31
                                              1998          1997          1996
                                           ----------    ----------    -----------
<S>                                        <C>           <C>           <C>
Federal income taxes (benefit) -- Note
  F......................................      29,000       (33,000)      (84,000)
                                           ----------    ----------     ---------
          Net income (loss) before
             minority interest...........    (340,047)     (189,410)     (164,477)
Minority interest in net losses of
  consolidated subsidiaries..............     396,725       117,536
                                           ----------    ----------     ---------
  NET INCOME (LOSS)......................  $   56,678    $  (71,874)    $(164,477)
                                           ==========    ==========     =========
  NET INCOME (LOSS) PER SHARE -- Note O:
     Basic...............................  $      .02    $     (.05)    $    (.14)
                                           ==========    ==========     =========
     Diluted.............................  $      .02    $     (.05)    $    (.14)
                                           ==========    ==========     =========
</TABLE>
 
See notes to consolidated financial statements.
 
                                      F-15
<PAGE>   109
 
           CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                                          ACCUMULATED
                                                            RETAINED-        OTHER
                                               COMMON       EARNINGS     COMPREHENSIVE
                                                STOCK        DEFICIT        INCOME           TOTAL
                                             -----------    ---------    -------------    -----------
<S>                                          <C>            <C>          <C>              <C>
BALANCES AT BEGINNING OF PERIOD............  $       -0-    $     -0-      $    -0-       $       -0-
Issuance of 1,149,324 shares of common
  stock for cash consideration of $4.67 per
  share in conjunction with formation of
  bank subsidiary..........................    5,363,512                                    5,363,512
Components of comprehensive income (loss):
  Net loss for 1996........................                  (164,477)                       (164,477)
  Market value adjustment (net of tax
     effect) for investment securities
     available for sale....................                                  (9,997)           (9,997)
                                                                                          -----------
  Total comprehensive loss for 1996........                                                  (174,474)
                                             -----------    ---------      --------       -----------
BALANCES AT DECEMBER 31, 1996..............    5,363,512     (164,477)       (9,997)        5,189,038
Issuance of 750,000 shares of common stock
  for cash consideration of $6.00 per
  share....................................    4,500,000                                    4,500,000
Components of comprehensive income:
  Net loss for 1997........................                   (71,874)                        (71,874)
  Market value adjustment (net of tax
     effect) for investment securities
     available for sale....................                                                    72,722
                                                                                          -----------
  Total comprehensive income for 1997......                                  72,722               848
                                             -----------    ---------      --------       -----------
BALANCES AT DECEMBER 31, 1997..............    9,863,512     (236,351)       62,725         9,689,886
Issuance of 1,947,736 shares of common
  stock for cash consideration -- Note I...   16,931,904                                   16,931,904
Components of comprehensive income:
  Net income for 1998......................                    56,678                          56,678
  Market value adjustment (net of tax
     effect) for investment securities
     available for sale....................                                 (51,386)          (51,386)
                                                                                          -----------
  Total comprehensive income for 1998......                                                     5,292
                                             -----------    ---------      --------       -----------
BALANCES AT DECEMBER 31, 1998..............  $26,795,416    $(179,673)     $ 11,339       $26,627,082
                                             ===========    =========      ========       ===========
</TABLE>
 
See notes to consolidated financial statements.
 
                                      F-16
<PAGE>   110
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                         SUN COMMUNITY BANCORP LIMITED
 
<TABLE>
<CAPTION>
                                                                                               PERIOD
                                                               YEAR ENDED DECEMBER 31          ENDED
                                                            ----------------------------    DECEMBER 31
                                                                1998            1997            1996
                                                            ------------    ------------    ------------
<S>                                                         <C>             <C>             <C>
OPERATING ACTIVITIES
  Net income (loss) for the period........................  $     56,678    $    (71,874)   $   (164,477)
  Adjustments to reconcile net income to net cash provided
     (used) by operating activities:
     Minority interest in net losses of consolidated
       subsidiaries.......................................      (396,725)       (117,536)
     Provision for loan losses............................       379,000         268,000          49,000
     Depreciation of premises and equipment...............       421,360         141,394          20,345
     Net accretion of investment security premiums........       (54,394)       (223,841)       (186,172)
     Loss on sale of furniture and equipment..............         3,915              --              --
     Deferred income taxes................................      (420,000)        (33,000)        (84,000)
  Originations of loans held for resale...................   (15,761,895)             --              --
  Proceeds from sales of loans held for resale............    14,486,107              --              --
  Increase in accrued interest income and other assets....    (1,531,898)       (822,255)       (308,514)
  Increase in accrued interest on deposits and other
     liabilities..........................................       679,503         251,661         139,925
                                                            ------------    ------------    ------------
          NET CASH USED BY OPERATING ACTIVITIES...........    (2,138,349)       (607,451)       (533,893)
INVESTING ACTIVITIES
  Proceeds from sale of investment securities available
     for sale.............................................       505,000              --              --
  Proceeds from maturities of investment securities
     available for sale...................................    22,500,000      20,500,000      22,420,000
  Purchases of investment securities available for sale...   (24,417,336)    (20,827,326)    (33,121,291)
  Net increase in portfolio loans.........................   (36,843,486)    (26,386,402)     (4,850,072)
  Proceeds from sale of furniture and equipment...........        10,000              --              --
  Purchases of premises and equipment.....................    (1,998,806)       (969,597)       (382,333)
                                                            ------------    ------------    ------------
          NET CASH USED BY INVESTING ACTIVITIES...........   (40,244,628)    (27,683,325)    (15,933,696)
FINANCING ACTIVITIES
  Net increase in demand deposits, NOW accounts and
     savings accounts.....................................    40,850,295      24,671,742       9,496,794
  Net increase in certificates of deposit.................    15,032,938       6,205,569       2,524,468
  Net proceeds from issuance of common stock..............    16,931,904       4,500,000       5,363,512
  Resources provided by minority interests................     7,798,160       2,127,373              --
                                                            ------------    ------------    ------------
          NET CASH PROVIDED BY FINANCING ACTIVITIES.......    80,613,297      37,504,684      17,384,774
                                                            ------------    ------------    ------------
          INCREASE IN CASH AND CASH EQUIVALENTS...........    38,230,320       9,213,908         917,185
Cash and cash equivalents at beginning of period..........    10,131,093         917,185             -0-
                                                            ------------    ------------    ------------
CASH AND CASH EQUIVALENTS AT END OF PERIOD................  $ 48,361,413    $ 10,131,093    $    917,185
                                                            ============    ============    ============
</TABLE>
 
See notes to consolidated financial statements.
 
                                      F-17
<PAGE>   111
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                         SUN COMMUNITY BANCORP LIMITED
                               DECEMBER 31, 1998
 
NOTE A -- NATURE OF OPERATIONS, BASIS OF PRESENTATION AND PRINCIPLES OF
CONSOLIDATION
 
     Sun Community Bancorp Limited (the "Corporation") is a multibank holding
company headquartered in the state of Arizona. The Corporation became a bank
holding company in May 1997 upon consummation of a share exchange agreement with
the shareholders of Bank of Tucson. Financial information set forth herein for
periods prior to May 1997 represent amounts applicable to Bank of Tucson.
 
     The Corporation was formed in October 1996 and was inactive until May 1997.
In May 1997, the Corporation entered into a share exchange agreement with Bank
of Tucson and its shareholders whereby Bank of Tucson became a wholly-owned
subsidiary of the Corporation. Because such share exchange has been accounted
for as a pooling of interests, the consolidated financial statements reflect the
merger transaction as if it had occurred at the beginning of the periods
presented (i.e., date of commencement of operations for Bank of Tucson, June
1996).
 
     The consolidated financial statements include the accounts of the
Corporation and its subsidiaries, after elimination of intercompany amounts and
transactions and after giving effect to applicable minority interest.
 
     The Corporation's consolidated banking subsidiaries (the "Banks") consist
of the following:
 
<TABLE>
<CAPTION>
                                                           PERCENTAGE    YEAR FORMED
AFFILIATE                                LOCATION            OWNED       OR ACQUIRED
---------                           -------------------    ----------    -----------
<S>                                 <C>                    <C>           <C>
Bank of Tucson                      Tucson, Arizona           100%          1996
Camelback Community Bank            Phoenix, Arizona           55%          1998
Mesa Bank                           Mesa, Arizona              53%          1998
Southern Arizona Community Bank     Tucson, Arizona            51%          1998
Sunrise Bank of Arizona             Phoenix, Arizona           51%          1998
Valley First Community Bank         Scottsdale, Arizona        52%          1997
</TABLE>
 
     The Corporation is 51% owned by Capitol Bancorp Ltd., a multibank holding
company, headquartered in the state of Michigan.
 
     The Corporation and the Banks are engaged in a single business
activity -- banking. The bank affiliates provide a full range of banking
services to individuals, businesses and other customers located in their
respective communities. Each of the banks generally operate from a single
location and focus their activities on meeting the various credit and other
banking needs of entrepreneurs, professionals and other high net-worth
individuals. A variety of deposit products are offered, including checking,
savings, money market, individual retirement accounts and certificates of
deposit. In addition, trust services are offered through Valley First Community
Bank which obtained trust powers in 1998. The principal markets for the banks'
financial services are the communities in which they are located and the areas
immediately surrounding those communities. In addition to
 
                                      F-18
<PAGE>   112
 
commercial banking units, mortgage banking activities are offered through Sun
Community Mortgage Company, a wholly-owned subsidiary of Bank of Tucson.
 
     Financial Accounting Standards Board ("FASB") Statement No. 131,
"Disclosures about Segments of an Enterprise and Related Information" became
effective for and has been implemented by the Corporation in 1998. This new
accounting standard revises the definition of reportable 'segments' and the
presentation of related disclosures. The standard focuses on the identification
of reportable segments on the basis of discreet business units and their
financial information to the extent such units are reviewed by an entity's
'chief decision maker' (which can be an individual or group of management
persons). The Statement permits aggregation or combination of segments which
have similar characteristics.
 
     In the Corporation's operations, each bank is viewed by management as being
a separately identifiable business or segment from the perspective of monitoring
performance and allocation of financial resources. Although the Banks operate
independently and are managed and monitored separately, each bank is
substantially similar in terms of business focus, type of customers, products
and services. Further, the Banks and the Corporation are subject to
substantially similar laws and regulations unique to the banking industry.
Accordingly, the Corporation's consolidated financial statements reflect the
presentation of segment information on an aggregated basis.
 
     The consolidated financial statements include the accounts of the
Corporation and its majority-owned subsidiaries, after elimination of
intercompany accounts and transactions, and after giving effect to applicable
minority interests. Banks formed or otherwise acquired during 1996, 1997 and
1998 are included in the consolidated financial statements for periods after
joining the consolidated group. Certain 1997 and 1996 amounts have been
reclassified to conform to the 1998 presentation.
 
NOTE B -- SIGNIFICANT ACCOUNTING POLICIES
 
     Estimates:  The preparation of consolidated financial statements in
conformity with generally accepted accounting principles requires management to
make certain estimates and assumptions that affect the reported amounts of
assets and liabilities at the date of the consolidated financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.
 
     Cash and Cash Equivalents:  Cash and cash equivalents include cash on hand,
amounts due from banks and federal funds sold. Generally, federal funds
transactions are entered into for a one-day period.
 
     Loans Held For Resale:  Loans held for resale represent residential real
estate mortgage loans held for sale into the secondary market. Loans held for
resale are stated at the aggregate lower of cost or market.
 
     Investment Securities:  Investment securities "available for sale"
(generally most debt securities investments of the Banks), are carried at market
value with unrealized gains and losses reported as a separate component of
stockholders' equity, net of tax effect. Investments are classified based on
management's analysis of liquidity and other factors. The adjusted cost of
specific securities sold is used to compute realized gains or losses. Premiums
and discounts are recognized in interest income using the interest method over
the period to maturity.
 
                                      F-19
<PAGE>   113
 
     Loans, Credit Risk and Allowance for Loan Losses:  Portfolio loans are
carried at their principal balance based on management's intent and ability to
hold such loans for the foreseeable future until maturity or repayment.
 
     Credit risk arises from making loans and loan commitments in the ordinary
course of business. Portfolio loans are made primarily to borrowers in the
Banks' geographic area. Consistent with the Banks' emphasis on business lending,
there are concentrations of credit in loans secured by commercial real estate,
equipment and other business assets. The maximum potential credit risk to the
Corporation, without regard to underlying collateral and guarantees, is the
total of loans and loan commitments outstanding. Management reduces the
Corporation's exposure to losses from credit risk by requiring collateral and/or
guarantees for loans granted and by monitoring concentrations of credit, in
addition to recording provisions for loan losses and maintaining an allowance
for loan losses.
 
     The allowance for loan losses is maintained at a level believed adequate by
management to absorb potential losses in the portfolio. Management's
determination of the adequacy of the allowance is based on evaluation of the
portfolio (including potential impairment of individual loans and concentrations
of credit), past loss experience, current economic conditions, volume, amount
and composition of the loan portfolio, loan commitments outstanding and other
factors. The allowance is increased by provisions charged to operations and
reduced by net charge-offs.
 
     Interest and Fees on Loans:  Interest income on loans is recognized based
upon the principal balance of loans outstanding. Fees from origination of loans
approximate related costs incurred.
 
     The accrual of interest is generally discontinued when a loan becomes 90
days past due as to interest. When interest accruals are discontinued, interest
previously accrued (but unpaid) is reversed. Management may elect to continue
the accrual of interest when the estimated net realizable value of collateral is
sufficient to cover the principal balance and accrued interest and the loan is
in process of collection.
 
     Premises and Equipment:  Premises and equipment are stated on the basis of
cost. Depreciation is computed principally by the straight-line method based
upon estimated useful lives of the respective assets. Leasehold improvements are
generally depreciated over the respective lease term.
 
     Other Real Estate:  Other real estate comprises properties acquired through
a foreclosure proceeding or acceptance of a deed in lieu of foreclosure. These
properties held for sale are carried at the lower of cost or estimated fair
value (net of estimated selling cost) at the date acquired and are periodically
reviewed for subsequent impairment.
 
     Federal Income Taxes:  Deferred income taxes are recognized for the tax
consequences of temporary differences by applying enacted tax rates applicable
to future years to differences between the financial statement carrying amount
and the tax bases of existing assets and liabilities. The effect on deferred
income taxes of a change in tax laws or rates is recognized in income in the
period that includes the enactment date.
 
     Stock-Based Compensation:  No stock-based compensation expense is recorded
upon granting of stock options because such stock options are accounted for
under the provisions of Accounting Principles Board Opinion 25. Pro forma
disclosure of alternative accounting recognition is made elsewhere herein (see
Note I).
 
     Trust Assets and Related Income:  Customer property, other than funds on
deposit, held in a fiduciary or agency capacity by the Corporation's banks is
not included in the
 
                                      F-20
<PAGE>   114
 
consolidated balance sheets because such property is not an asset of the Banks
or the Corporation. Trust fee income is recorded on the accrual method.
 
     Comprehensive Income:  "Comprehensive income", as that term is defined in
Statement of Financial Accounting Standards (SFAS) No. 130, is the sum of net
income and certain other items which are charged or credited to stockholders'
equity. For the periods presented, the Corporation's only element of
comprehensive income other than net income was the net change in the market
value adjustment for investment securities available for sale. Accordingly, the
elements and total of comprehensive income are shown within the consolidated
statement of changes in stockholders' equity presented herein. Implementation of
this new accounting standard in 1998 had no impact on the Corporation's
consolidated financial position or results of operations.
 
NOTE C -- INVESTMENT SECURITIES
 
     Investment securities available for sale consisted of the following at
December 31:
 
<TABLE>
<CAPTION>
                                     1998                          1997
                          --------------------------    --------------------------
                                          ESTIMATED                     ESTIMATED
                           AMORTIZED       MARKET        AMORTIZED       MARKET
                             COST           VALUE          COST           VALUE
                          -----------    -----------    -----------    -----------
<S>                       <C>            <C>            <C>            <C>
United States Treasury
  securities............  $ 1,499,981    $ 1,504,843    $ 1,748,652    $ 1,756,874
United States government
  agency securities.....   11,405,378     11,417,696      9,689,978      9,776,793
                          -----------    -----------    -----------    -----------
                          $12,905,359    $12,922,539    $11,438,630    $11,533,667
                          ===========    ===========    ===========    ===========
</TABLE>
 
     At December 31, 1998, securities with a market value approximating
$3,000,000 were pledged to secure public and trust deposits and for other
purposes as required by law.
 
     Gross unrealized gains and losses on investment securities available for
sale were as follows:
 
<TABLE>
<CAPTION>
                                                        DECEMBER 31
                                           --------------------------------------
                                                 1998                 1997
                                           -----------------    -----------------
                                            GAINS     LOSSES     GAINS     LOSSES
                                           -------    ------    -------    ------
<S>                                        <C>        <C>       <C>        <C>
United States Treasury securities........  $ 4,862    $         $ 8,222     $
United States government agency
  securities.............................   17,437     5,119     87,387      572
                                           -------    ------    -------     ----
                                           $22,299    $5,119    $95,609     $572
                                           =======    ======    =======     ====
</TABLE>
 
     Gross realized gains and losses from sales and maturities of investment
securities were insignificant for each of the periods presented.
 
                                      F-21
<PAGE>   115
 
     Scheduled maturities of investment securities as of December 31, 1998
follows:
 
<TABLE>
<CAPTION>
                                                                      ESTIMATED
                                                       AMORTIZED       MARKET
                                                         COST           VALUE
                                                      -----------    -----------
<S>                                                   <C>            <C>
Due in one year or less.............................  $10,906,001    $10,926,602
After one year, through five years..................    1,999,358      1,995,937
                                                      -----------    -----------
                                                      $12,905,359    $12,922,539
                                                      ===========    ===========
</TABLE>
 
NOTE D -- LOANS
 
     Transactions in the allowance for loan losses are summarized below:
 
<TABLE>
<CAPTION>
                                                   1998        1997       1996
                                                 --------    --------    -------
<S>                                              <C>         <C>         <C>
Balance at beginning of period.................  $317,000    $ 49,000         --
Provision charged to operations................   379,000     268,000    $49,000
Loans charged off (deduction)..................        --          --         --
Recoveries.....................................        --          --         --
                                                 --------    --------    -------
Balance at December 31.........................  $696,000    $317,000    $49,000
                                                 ========    ========    =======
</TABLE>
 
     At December 31, 1998, there were no impaired loans (i.e., loans for which
there is a reasonable probability that borrowers would be unable to repay all
principal and interest due under the contractual terms of the loan documents).
 
NOTE E -- PREMISES AND EQUIPMENT
 
     Major classes of premises and equipment consisted of the following at
December 31:
 
<TABLE>
<CAPTION>
                                                           1998          1997
                                                        ----------    ----------
<S>                                                     <C>           <C>
Leasehold improvements................................  $  819,620    $  201,724
Equipment and furniture...............................   2,511,963     1,147,081
                                                        ----------    ----------
                                                         3,331,583     1,348,805
Less accumulated depreciation.........................    (577,862)     (158,615)
                                                        ----------    ----------
                                                        $2,753,721    $1,190,190
                                                        ==========    ==========
</TABLE>
 
     The Banks rent office space under operating leases. Rent expense under
these lease agreements approximated $362,000, $158,000 and $22,000 for the
periods ended December 31, 1998, 1997 and 1996, respectively. Future minimum
rental payments under operating leases that have initial or remaining
noncancelable lease terms in excess of one year as of December 31, 1998
aggregate $8,287,000 due as follows: $801,000 in 1999, $805,000 in 2000,
$808,000 in 2001, $826,000 in 2002, $849,000 in 2003 and $4,198,000 thereafter.
 
                                      F-22
<PAGE>   116
 
NOTE F -- INCOME TAXES
 
     Income taxes (benefit) consist of the following components:
 
<TABLE>
<CAPTION>
                                         1998         1997        1996
                                       ---------    --------    --------
<S>                                    <C>          <C>         <C>
Current..............................  $ 449,000    $ 11,000    $(74,000)
Deferred.............................   (420,000)    (44,000)    (10,000)
                                       ---------    --------    --------
                                       $  29,000    $(33,000)   $(84,000)
                                       =========    ========    ========
</TABLE>
 
     Income taxes paid in 1998 and 1997 approximated $387,000 and $40,000,
respectively (none in 1996).
 
     Differences between income tax expense and amount computed using the
statutory federal income tax rate are reconciled below:
 
<TABLE>
<CAPTION>
                                         1998         1997        1996
                                       ---------    --------    --------
<S>                                    <C>          <C>         <C>
Federal income tax (benefit) computed
  at statutory rate of 34%...........  $(106,000)   $(76,000)   $(84,000)
Tax effect of:
  Minority interest in losses of
     consolidated subsidiaries.......    135,000      40,000
  Nondeductible expenses.............                  1,000
  Other..............................                  2,000
                                       ---------    --------    --------
                                       $  29,000    $(33,000)   $(84,000)
                                       =========    ========    ========
</TABLE>
 
     As of December 31, 1998, the Corporation and its subsidiaries have net
operating loss carryforwards of approximately $1,500,000 which expire
principally in 2014.
 
     Net deferred income tax assets consisted of the following at December 31:
 
<TABLE>
<CAPTION>
                                                    1998         1997
                                                  ---------    --------
<S>                                               <C>          <C>
Allowance for loan losses.......................  $ 227,000    $ 98,000
Portion of subsidiaries operating losses
  applicable to minority interests..............   (134,000)
Net operating loss carryforwards of
  subsidiaries..................................    417,000
Cash to accrual temporary differences...........    (45,000)
Market value adjustments for investment
  securities available for sale.................      6,000      32,000
Other, net......................................    (23,000)    (76,000)
                                                  ---------    --------
  Net deferred tax assets.......................  $ 448,000    $ 54,000
                                                  =========    ========
</TABLE>
 
     Realization of the recorded deferred tax asset is dependent upon generating
taxable income in future periods. Although realization is not assured,
management believes it is more likely than not that all of the deferred tax
asset will be realized.
 
NOTE G -- RELATED PARTIES TRANSACTIONS
 
     In the ordinary course of business, the Banks make loans to officers and
directors of the Banks including their immediate families and companies in which
they are principal
 
                                      F-23
<PAGE>   117
 
owners. At December 31, 1998, total loans to these persons approximated
$4,674,000 ($1,497,000 at December 31, 1997). During 1998, $4,134,000 of new
loans were made to these persons and repayments totaled $957,000. Such loans are
made at the Banks' normal credit terms.
 
     Such officers and directors of the Corporation and the Banks (and their
associates, family and/or affiliates) are also depositors of the Banks. Such
deposits are similarly made at the Banks' normal terms as to interest rate, term
and deposit insurance.
 
     The Banks purchased certain data processing and management services from
Capitol Bancorp Ltd. Amounts paid for such services aggregated $105,000 and
$30,000 in 1997 and 1996, respectively (none in 1998).
 
     The Banks have interest-bearing time deposits at other bank affiliates of
Capitol Bancorp Ltd. which approximated $1,150,000 at December 31, 1998.
 
NOTE H -- DEPOSITS
 
     The aggregate amount of time deposits of $100,000 or more approximated
$15,519,000 and $5,268,000 as of December 31, 1998 and 1997, respectively.
 
     At December 31, 1998, the scheduled maturities of time deposits of $100,000
or more were as follows:
 
<TABLE>
<S>                                                         <C>
1999......................................................  $10,532,000
2000......................................................    2,747,000
2001......................................................    2,140,000
2002......................................................      100,000
                                                            -----------
Total.....................................................  $15,519,000
                                                            ===========
</TABLE>
 
     Interest paid approximates amounts charged to operations on an accrual
basis for the periods presented.
 
NOTE I -- COMMON STOCK AND STOCK OPTIONS
 
     In September 1998 a 3-for-1 stock split occurred. All share and per share
data have been restated to reflect the stock split as if it had occurred at the
beginning of the periods presented.
 
     In January 1998, the Corporation completed a private offering of 954,546
shares of common stock at a price of $7.33 per share. In December 1998, the
Corporation sold 993,990 shares of common stock at $10.00 per share in a private
offering of 1,000,000 shares; 6,810 shares of common stock were subsequently
sold in early 1999, completing the offering.
 
     Stock options have been granted to certain officers which provide for the
purchase of shares of common stock. Generally, stock options are granted at an
exercise price equal to the fair value of common stock on the grant date, expire
ten years after grant, are currently exercisable, and are subject to a
diminishing right of repurchase for a five year period. Such right of repurchase
does not apply to options which have been exercised.
 
                                      F-24
<PAGE>   118
 
     Stock option activity is summarized as follows:
 
<TABLE>
<CAPTION>
                                                                           WEIGHTED
                                          NUMBER OF                        AVERAGE
                                           OPTIONS         EXERCISE        EXERCISE
                                         OUTSTANDING      PRICE RANGE       PRICE
                                         -----------    ---------------    --------
<S>                                      <C>            <C>                <C>
Outstanding at January 1, 1997.........    195,000           $4.67          $ 4.67
Granted in 1997........................     87,000           6.00             6.00
Exercised in 1997......................         --
Expired in 1997........................         --
                                           -------      ---------------     ------
Outstanding at December 31, 1997.......    282,000      $4.67 to $6.00        5.08
Granted in 1998........................    278,973          $10.00           10.00
Exercised in 1998......................         --
Expired/other in 1998..................         --
                                           -------      ---------------     ------
Outstanding at December 31, 1998.......    560,973      $4.67 To $10.00     $ 7.53
                                           =======      ===============     ======
</TABLE>
 
     As of December 31, 1998, stock options outstanding had a weighted average
remaining contractual life of 9.3 years.
 
     SFAS No. 123, "Accounting for Stock-Based Compensation", establishes a fair
value method of accounting for stock options whereby compensation expense is
recognized based on the computed fair value of the options on the grant date.
However, as permitted by Statement No. 123, the Corporation has elected to
continue to account for its stock options under the earlier accounting standard
and, therefore, has not recognized compensation expense. By electing this
alternative, certain pro forma disclosures of the expense recognition provisions
are required, which are as follows:
 
<TABLE>
<CAPTION>
                                                           1998          1997
                                                        -----------    ---------
<S>                                                     <C>            <C>
Fair value assumptions:
  Risk-free interest rate.............................          5.0%         7.5%
  Dividend yield......................................            0%           0%
  Stock price volatility..............................            0            0
  Expected option life................................     10 years     10 years
Pro forma net income (loss)...........................  $  (668,000)   $(285,000)
Pro forma net income (loss) per diluted share.........  $      (.22)   $    (.18)
</TABLE>
 
NOTE J -- EMPLOYEE BENEFIT PLANS
 
     Employees of the Corporation and its subsidiaries participate in a 401(k)
plan, subject to certain eligibility requirements. Employer contributions to the
Plan and charged to expense in 1998 approximated $28,000. There were no employer
contributions to this plan charged to expense in 1997 or 1996.
 
                                      F-25
<PAGE>   119
 
NOTE K -- ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     Carrying values and estimated fair values of financial instruments were as
follows (in thousands) at December 31:
 
<TABLE>
<CAPTION>
                                                   1998                     1997
                                           ---------------------    ---------------------
                                                       ESTIMATED                ESTIMATED
                                           CARRYING      FAIR       CARRYING      FAIR
                                            VALUE        VALUE       VALUE        VALUE
                                           --------    ---------    --------    ---------
<S>                                        <C>         <C>          <C>         <C>
Financial Assets:
  Cash and cash equivalents..............  $48,361      $48,361     $10,131      $10,131
  Investment securities available for
     sale................................   12,923       12,953      11,534       11,534
  Loans:
     Fixed rate..........................   18,719       18,962       9,940        9,892
     Variable rate.......................   50,637       50,640      21,296       21,433
                                           -------      -------     -------      -------
          Total loans....................   69,356       69,602      31,236       31,325
  Less allowance for loan losses.........     (696)        (696)       (317)        (317)
                                           -------      -------     -------      -------
     Net portfolio loans.................   68,660       68,906      30,919       31,008
Financial Liabilities:
  Deposits:
     Noninterest-bearing deposits........   28,033       28,033       9,559        9,559
     Interest-bearing deposits:
       Demand accounts...................   46,986       47,569      24,610       24,516
       Time certificates of deposit less
          than $100,000..................    8,244        8,273       3,462        3,460
       Time certificates of deposit
          $100,000 or more...............   15,519       14,663       5,268        5,398
                                           -------      -------     -------      -------
          Total interest-bearing
            deposits.....................   70,749       70,505      33,340       33,374
                                           -------      -------     -------      -------
          Total deposits.................   98,782       98,538      42,899       42,933
</TABLE>
 
     Estimated fair values of financial assets and liabilities are based upon a
comparison of current interest rates of financial instruments and the timing of
related scheduled cash flows to the estimated present value of such cash flows
using current estimated market rates of interest unless quoted market values or
other fair value information is more readily available. Such estimates of fair
value are not intended to represent market value or portfolio liquidation value,
and only represent an estimate of fair values based on current financial
reporting requirements.
 
NOTE L -- COMMITMENTS AND CONTINGENCIES
 
     In the ordinary course of business, various loan commitments are made to
accommodate the financial needs of the Banks' customers. Such loan commitments
include stand-by letters of credit, lines of credit, and various commitments for
other commercial, consumer and mortgage loans. Stand-by letters of credit, when
issued, commit the Banks to make payments on behalf of customers when certain
specified future events occur and are used infrequently ($511,000 and $1,120,000
outstanding at December 31, 1998 and 1997, respectively). Other loan commitments
outstanding consist of unused lines of credit and approved, but unfunded,
specific loan commitments ($12,553,000 and $10,877,000 at December 31, 1998 and
1997, respectively). These loan commitments (stand-by letters of
 
                                      F-26
<PAGE>   120
 
credit and unfunded loans) generally expire within one year and are reviewed
periodically for continuance or renewal. All loan commitments have credit risk
essentially the same as that involved in routinely making loans to customers and
are made subject to the Banks' normal credit policies. In making these loan
commitments, collateral and/or personal guarantees of the borrowers are
generally obtained based on management's credit assessment. Such loan
commitments are also included in management's evaluation of the adequacy of the
allowance for loan losses.
 
     The Corporation's banking subsidiaries are required to maintain average
reserve balances in the form of cash on hand and balances due from the Federal
Reserve Bank and certain correspondent banks. The amount of reserve balances
required as of December 31, 1998 was $213,000.
 
NOTE M -- CAPITAL REQUIREMENTS
 
     The Corporation and the Banks are subject to certain capital requirements.
Federal financial institution regulatory agencies have established certain
risk-based capital guidelines for banks and bank holding companies. Those
guidelines require all banks and bank holding companies to maintain certain
minimum ratios and related amounts based on "Tier I" and Tier II" capital and
"risk-weighted assets" as defined and periodically prescribed by the respective
regulatory agencies. Failure to meet these capital requirements can result in
severe regulatory enforcement action or other adverse consequences for a
depository institution, and, accordingly, could have a material impact on the
Corporation's consolidated financial statements.
 
     Under the regulatory capital adequacy guidelines and related framework for
prompt corrective action, the specific capital requirements involve quantitative
measures of assets, liabilities and certain off-balance-sheet items calculated
under regulatory accounting practices. The capital amounts and classifications
are also subject to qualitative judgments by regulatory agencies about
components, risk weighting, and other factors.
 
     As of December 31, 1998, the most recent notification received by the Banks
from regulatory agencies have advised that the Banks are classified as
"well-capitalized" as that term is defined by the applicable agencies. There are
no conditions or events since those notifications that management believes would
change the regulatory classification of the Banks.
 
     Management believes, as of December 31, 1998, that the Corporation and the
Banks meet all capital adequacy requirements to which they are subject.
 
     The various amounts of regulatory capital (in thousands) and related ratios
of the individually significant subsidiaries (assets of $35 million or more as
of December 31,
 
                                      F-27
<PAGE>   121
 
1998) and consolidated regulatory capital position as of December 31, 1998 and
1997 are summarized below:
 
<TABLE>
<CAPTION>
                                                          VALLEY FIRST
                                             BANK OF       COMMUNITY
                                             TUCSON           BANK        CONSOLIDATED
                                           -----------    ------------    ------------
<S>                                        <C>            <C>             <C>
December 31, 1998
---------------------
Total Capital to Total Assets:
  Minimum Required Amount(1).............   => $ 5,109     => $ 2,927      => $ 5,423
  Actual Amount..........................      $ 6,053        $ 3,994         $26,627
     Ratio...............................         9.48%         10.92%          19.64%
Tier I Capital to Risk-Weighted Assets:
  Minimum Required Amount(2).............   => $ 1,669     => $   940      => $ 3,397
  Actual Amount..........................      $ 5,945        $ 3,705         $36,038
     Ratio...............................        14.25%         15.76%          42.43%
Combined Tier I and Tier II Capital to
  Risk-Weighted Assets:
  Minimum Required Amount(3).............   => $ 3,338     => $ 1,880      => $ 6,795
  Amount Required to Meet "Well-
     Capitalized" Category(4)............   => $ 4,173     => $ 2,351      => $ 8,494
  Actual Amount..........................      $ 6,337        $ 3,914         $36,734
     Ratio...............................        15.19%         16.65%          43.25%
December 31, 1997
---------------------
Total Capital to Total Assets:
  Minimum Required Amount(1).............   => $ 3,328     => $ 1,026      => $ 4,401
  Actual Amount..........................      $ 5,412        $ 4,170         $ 9,690
     Ratio...............................        13.01%         32.51%          17.62%
Tier I Capital to Risk-Weighted Assets:
  Minimum Required Amount(2).............   => $ 1,089     => $   359      => $ 1,473
  Actual Amount..........................      $ 5,124        $ 3,775         $ 9,191
     Ratio...............................        18.82%         42.02%          24.96%
Combined Tier I and Tier II Capital to
  Risk-Weighted Assets:
  Minimum Required Amount(3).............   => $ 2,178     => $   719      => $ 2,946
  Amount Required to Meet "Well-
     Capitalized" Category(4)............   => $ 2,722     => $   898     =>  $ 3,682
  Actual Amount..........................      $ 5,359        $ 3,857         $ 9,508
     Ratio...............................        19.69%         42.94%          25.82%
</TABLE>
 
-------------------------
 
(1) As a condition of charter approval, de novo banks generally are required to
    maintain a capital-to-assets ratio of not less than 8% for the first three
    years of operations; such leverage ratio is otherwise required to be not
    less than 4%.
 
(2) The minimum required ratio of Tier I capital to risk-weighted assets is 4%.
 
                                      F-28
<PAGE>   122
 
(3) The minimum required ratio of Tier I and Tier II capital to risk-weighted
    assets is 8%.
 
(4) In order to be classified as a "well-capitalized" institution, the ratio of
    Tier I and Tier II capital to risk-weighted assets must be 10% or more.
 
NOTE N -- PARENT COMPANY ONLY INFORMATION
 
CONDENSED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                            -DECEMBER 31 -
                                                       -------------------------
                                                          1998           1997
                                                       -----------    ----------
<S>                                                    <C>            <C>
Assets
  Cash on deposit with subsidiary banks..............  $     6,618    $  108,843
  Money market funds on deposit with subsidiary
     banks...........................................    8,914,586     1,521,443
  Investment in subsidiaries.........................   17,194,453     7,497,047
  Equipment and furniture, net.......................      383,019       338,359
  Other assets.......................................      319,988       237,214
                                                       -----------    ----------
          TOTAL ASSETS...............................  $26,818,664    $9,702,906
                                                       ===========    ==========
Liabilities and Stockholders' Equity
  Accounts payable, accrued expenses and other
     liabilities.....................................  $   191,582    $   75,745
  Stockholders' equity...............................   26,627,082     9,627,161
                                                       -----------    ----------
          TOTAL LIABILITIES AND STOCKHOLDERS'
             EQUITY..................................  $26,818,664    $9,702,906
                                                       ===========    ==========
</TABLE>
 
CONDENSED STATEMENTS OF INCOME
 
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31
                                                          ----------------------
                                                             1998         1997
                                                          ----------    --------
<S>                                                       <C>           <C>
Income
  Intercompany fees.....................................  $  711,651    $ 96,000
  Interest..............................................     226,186      36,270
                                                          ----------    --------
                                                             937,837     132,270
Expenses
  Salaries and employee benefits........................     581,431     109,628
  Occupancy.............................................      70,906       3,585
  Other.................................................     504,812     102,621
                                                          ----------    --------
                                                           1,157,149     215,834
                                                          ----------    --------
                                                            (219,312)    (83,564)
Equity in net earnings (losses) of consolidated
  subsidiaries..........................................     348,990        (310)
Federal income taxes....................................      73,000      12,000
                                                          ----------    --------
          NET INCOME (LOSS).............................  $   56,678    $(71,874)
                                                          ==========    ========
</TABLE>
 
                                      F-29
<PAGE>   123
 
CONDENSED STATEMENT OF CASH FLOW
 
<TABLE>
<CAPTION>
                                                         1998           1997
                                                      -----------    -----------
<S>                                                   <C>            <C>
Net Income (loss)...................................  $    56,678    $   (71,874)
Adjustments to reconcile net loss to net cash
  provided (used) by operating activities:
  Equity in net losses (earnings) of subsidiaries...     (348,990)           310
  Depreciation and amortization.....................      105,408
Increase in other assets............................      (82,774)      (237,214)
Increase in accounts payable, accrued expenses and
  other liabilities.................................      115,837         75,745
                                                      -----------    -----------
          NET CASH USED BY OPERATING ACTIVITIES.....     (153,841)      (233,033)
INVESTMENT ACTIVITIES
Net cash investment in subsidiaries.................   (9,337,077)    (2,298,322)
Purchases of equipment and furniture................     (150,068)      (338,359)
                                                      -----------    -----------
          NET CASH USED BY INVESTING ACTIVITIES.....   (9,487,145)    (2,636,681)
FINANCING ACTIVITIES -- Net proceeds from issuance
  of common stock...................................   16,931,904      4,500,000
                                                      -----------    -----------
INCREASE IN CASH AND CASH EQUIVALENTS...............    7,290,918      1,630,286
Cash and cash equivalents at beginning of year......    1,630,286            -0-
                                                      -----------    -----------
CASH AND CASH EQUIVALENTS AT END OF YEAR............  $ 8,921,204    $ 1,630,286
                                                      ===========    ===========
</TABLE>
 
NOTE O -- NET INCOME (LOSS) PER SHARE
 
     The computations of basic and diluted net income (loss) per share were as
follows:
 
<TABLE>
<CAPTION>
                                              1998          1997          1996
                                           ----------    ----------    ----------
<S>                                        <C>           <C>           <C>
Numerator -- net income (loss) for the
  year...................................  $   56,678    $  (71,874)   $ (164,477)
                                           ==========    ==========    ==========
Denominator:
  Weighted average number of shares
     outstanding (denominator for basic
     earnings per share).................   2,853,070     1,592,574     1,149,324
  Effect of dilutive stock options.......     138,735            --(1)         --(1)
                                           ----------    ----------    ----------
Denominator for diluted earnings per
  share -- weighted average number of
  shares and potential dilution..........   2,991,805     1,592,574     1,149,324
                                           ==========    ==========    ==========
Basic net income (loss) per share........  $     0.02    $    (0.05)   $    (0.14)
                                           ==========    ==========    ==========
</TABLE>
 
                                      F-30
<PAGE>   124
 
<TABLE>
<CAPTION>
                                              1998          1997          1996
                                           ----------    ----------    ----------
<S>                                        <C>           <C>           <C>
Diluted net income (loss) per share......  $     0.02    $    (0.05)   $    (0.44)
                                           ==========    ==========    ==========
</TABLE>
 
-------------------------
 
(1) Antidilutive for period presented.
 
Additional disclosures regarding stock options are set forth in Note J.
 
NOTE P -- IMPLEMENTATION OF NEW ACCOUNTING STANDARD
 
     In 1998, the American Institute of CPAs issued Statement of Position 98-5,
"Reporting on the Costs of Start-Up Activities". It requires start-up costs and
organizational costs to be charged to expense when incurred. The initial
application of the statement will require a cumulative effect adjustment for
those companies that had previously capitalized start-up and organization costs
and will become effective in 1999. In the circumstances of the Corporation and
its banks, this new accounting standard applies to previously capitalized
preopening and other start-up costs of its bank subsidiaries which, net of
amortization, approximated $1,149,000 at December 31, 1998 and were classified
as a component of other assets in the consolidated balance sheet. Based on
management's preliminary analysis, implementation of this standard is expected
to be reflected as a cumulative effect adjustment (net of income tax effect) of
approximately $386,000 to be charged to first quarter 1999 results of
operations.
 
                                      F-31
<PAGE>   125
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
Prospectus Summary..........................................    3
Risk Factors................................................   10
Use of Proceeds.............................................   17
Capitalization..............................................   18
Dividend Policy.............................................   19
Dilution....................................................   20
Recent Developments.........................................   21
Business....................................................   22
Selected Consolidated Financial Data........................   29
Management's Discussion and Analysis of Financial Condition
  and Results of Operations:
  Periods Ended March 31, 1999 and 1998.....................   32
  Periods Ended December 31, 1998, 1997 and 1996............   35
  Supplemental Selected Financial Data for periods ended
     December 31, 1998......................................   47
Management..................................................   55
Certain Relationships and Related Transactions..............   68
Principal Shareholders......................................   69
Supervision and Regulation..................................   73
Description of Capital Stock................................   80
Shares Eligible for Future Sale.............................   85
Underwriting................................................   87
Legal Matters...............................................   90
Experts.....................................................   90
Index to Financial Statements...............................  F-1
</TABLE>
 
     You should rely only on the information contained in this prospectus. We
have not authorized any other person to provide you with different information.
If anyone provides you with different or inconsistent information, you should
not rely on it. We are not, and the underwriters are not, making an offer to
sell these securities in any jurisdiction where the offer or sale is not
permitted. You should assume that the information appearing in this prospectus
is accurate as of the date on the front cover of this prospectus only. Our
business, financial condition, results of operations and prospects may have
changed since that date.
 
     UNTIL              1999 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL
DEALERS THAT BUY, SELL OR TRADE THESE SHARES OF COMMON STOCK, WHETHER OR NOT
PARTICIPATING IN THIS OFFERING, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS
IN ADDITION TO THE DEALERS' OBLIGATION TO DELIVER A PROSPECTUS WHEN ACTING AS
UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENT OR SUBSCRIPTIONS.
 
                              [SUN COMMUNITY LOGO]
<PAGE>   126
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     The following table sets forth the costs and expenses, other than the
underwriting discount, incurred and to be incurred in connection with the
issuance and distribution of the securities registered pursuant to this
Registration Statement:
 
<TABLE>
<S>                                                           <C>
Securities and Exchange Commission registration fee.........  $ 9,591
Nasdaq listing fee..........................................  $66,875
NASD filing fee.............................................  $ 3,950
*Printing and engraving expenses............................  $
*Accounting fees and expenses...............................  $
*Legal fees and expenses....................................  $
*Transfer Agent and Registrar fees and expenses.............  $ 5,000
*Blue Sky fees and expenses (including legal fees)..........  $ 2,500
*Miscellaneous expenses.....................................  $
                                                              -------
          Total.............................................  $
                                                              =======
</TABLE>
 
-------------------------
* Estimated
 
ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     Sun's Articles of Incorporation provide that Sun will indemnify, to the
fullest extent permitted by Arizona law, a director or officer of Sun who incurs
liability or expenses by reason of such person acting as an officer or director
of Sun. Sun's Articles of Incorporation provide that this indemnification is
mandatory in all circumstances in which indemnification is permitted by Arizona
law. Pursuant to Arizona law, to be eligible for indemnification, the officer's
or director's conduct must have been in good faith and the director or officer
must reasonably have believed that the conduct was in or at least not opposed to
the corporation's best interests and with respect to criminal proceedings, the
director or officer must have had no reasonable cause to believe the conduct was
unlawful. Arizona law further provides that a corporation must indemnify a
director or officer who was the prevailing party in the defense of any
proceeding to which such individual was a party because that individual is or
was a director or officer of the corporation against reasonable expenses
incurred by such individual in connection with the proceeding. In addition,
Arizona law provides that a corporation must indemnify outside directors (a
director who is not an officer, employee, or holder of five percent or more of
any class of the stock of the corporation or of any affiliate of the
corporation) against liability unless (i) the corporation's articles of
incorporation limit such indemnification; (ii) the outside director is adjudged
liable to the corporation in a proceeding by or in the right of the corporation
or in any other proceeding charging improper financial benefit to the director;
or (iii) a court determines, before payment to the outside director, that the
director failed to meet the standard of conduct required for indemnification and
a court does not otherwise authorize payment. Arizona law provides that a
director or officer may not be indemnified for liability incurred for (i)
financial benefit received by a director or officer to which the director or
officer is not entitled; (ii) intentional infliction of harm on the
 
                                      II-1
<PAGE>   127
 
corporation or the shareholders; (iii) approval of unlawful distributions (in
the case of directors only); and (iv) intentional violation of criminal law.
Arizona law also precludes indemnification of a director or officer in
connection with a proceeding by or in the right of the corporation in which the
director or officer was adjudged liable to the corporation.
 
     Sun's Articles of Incorporation provide that Sun will not indemnify an
officer or director or advance expenses to an officer or director with respect
to any action, suit or proceeding, whether civil, criminal, administrative or
investigative, brought or made by such officer or director against the
corporation, unless such action, suit or proceeding is approved by the board of
directors.
 
ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES
 
     In May 1997, Sun issued 250,000 shares of common stock to both accredited
and non-accredited investors pursuant to a private placement under Section 4(2)
of the Securities Act with an aggregate cash offering price of $450,000.
 
     In January 1998, Sun issued 318,182 shares of common stock to accredited
investors pursuant to a private placement under Section 4(2) of the Securities
Act with an aggregate cash offering price of $7,000,004.
 
     In January 1999, Sun issued 1,000,000 shares of common stock to accredited
investors pursuant to a private placement under Section 4(2) of the Securities
Act with an aggregate cash offering price of $10,000,000.
 
                                      II-2
<PAGE>   128
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
     (a) List of Exhibits
 
<TABLE>
<C>     <S>  <C>
 *1.1   --   Form of Underwriting Agreement by and between EVEREN
             Securities, Inc. and Sun.
  3.1   --   Articles of Incorporation of Sun.
 *3.2   --   Amendment to the Articles of Incorporation of Sun.
 *3.3   --   Amended and Restated Bylaws of Sun.
 *4     --   Specimen Common Stock Certificate.
 *5     --   Opinion of Snell & Wilmer L.L.P.
 10.1   --   Employment Agreement by and between Sun and Joseph D. Reid,
             dated November 20, 1997.
*10.2   --   Employment Agreement by and between Camelback Community Bank
             and Joseph D. Reid.
*10.3   --   Employment Agreement by and between Mesa Bank and Joseph D.
             Reid, dated March 17, 1998.
*10.4   --   Employment Agreement by and between Southern Arizona
             Community Bank and Joseph D. Reid, dated October 1, 1997.
*10.5   --   Employment Agreement by and between Sunrise Bank of Arizona
             and Joseph D. Reid, dated October 1, 1997.
*10.6   --   Employment Agreement by and between Valley First Community
             Bank and Joseph D. Reid
 10.7   --   Employment Agreement by and between Sun and John S. Lewis,
             dated November 23, 1998.
 10.8(a) --  Employment Agreement by and between Valley First Community
             Bank and Gary W. Hickel, dated October 1, 1996.
 10.8(b) --  Addendum to Employment Agreement by and between Valley First
             Community Bank and Gary W. Hickel, dated October 1, 1996.
*10.9   --   Employment Memorandum by and between Bank of Tucson and
             Michael F. Hannley, dated November 20, 1997.
 10.10  --   Anti-dilution Agreement by and between Sun and Capitol
             Bancorp Limited
*10.11  --   Stock Option Program.
 21     --   Subsidiaries of Sun.
 23.1   --   Consent of BDO Seidman, LLP.
 23.2   --   Consent of Cotton, Parker, Johnson & Co., P.C.
*23.3   --   Consent of Snell & Wilmer L.L.P. (included in Exhibit 5).
 24.1   --   Powers of Attorney (set forth on signature page included in
             Registration Statement).
 27.1   --   Financial Data Schedule for fiscal year end December 31,
             1998.
 27.2   --   Financial Data Schedule for three months ended March 31,
             1999.
 99.1   --   Consent of Director-Nominee
</TABLE>
 
-------------------------
 
* To be filed by amendment.
 
                                      II-3
<PAGE>   129
 
ITEM 17.  UNDERTAKINGS.
 
     The undersigned registrant hereby undertakes to provide to the underwriters
at the closing specified in the Underwriting Agreement certificates in such
denominations and registered in such names as required by the underwriters to
permit prompt delivery to each purchaser.
 
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of Sun pursuant
to the foregoing provisions, or otherwise, Sun has been advised that in the
opinion of the Securities and Exchange Commission such indemnification is
against public policy as expressed in the Securities Act and is, therefore,
unenforceable. If a claim for indemnification against such liabilities (other
than the payment by Sun of expenses incurred or paid by a director, officer or
controlling person of Sun in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, Sun will, unless in the opinion
of its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question of whether such indemnification
by it is against public policy as expressed in the Securities Act and will be
governed by the final adjudication of such issue.
 
     The undersigned registrant hereby undertakes that:
 
          (1) For purposes of determining any liability under the Securities Act
     of 1933, the information omitted from the form of prospectus filed as part
     of this Registration Statement in reliance upon Rule 430A and contained in
     a form of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     Registration Statement as of the time it was declared effective.
 
          (2) For the purpose of determining any liability under the Securities
     Act of 1933, each post-effective amendment that contains a form of
     prospectus shall be deemed to be a new Registration Statement relating to
     the securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide offering thereof.
 
                                      II-4
<PAGE>   130
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, Sun Community
Bancorp Limited has duly caused this Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Phoenix,
State of Arizona, on this 20th day of April, 1999.
 
                                          SUN COMMUNITY BANCORP LIMITED
 
                                          By: /s/ JOSEPH D. REID
                                            ------------------------------------
                                              Joseph D. Reid
                                              Chairman of the Board of Directors
                                              and Chief Executive Officer
 
                               POWER OF ATTORNEY
 
     The Registrant and each person whose signature appears below constitutes
and appoints Joseph D. Reid, Cristin Reid English, and Lee W. Hendrickson, and
any agent for service named in this Registration Statement and each of them,
his, her, or its true and lawful attorneys-in-fact and agents, with full power
of substitution and resubstitution, for him, her, or it and in his, her, or its
name, place and stead, in any and all capacities, to sign and file (i) any and
all amendments (including post-effective amendments) to this Registration
Statement, with all exhibits thereto, and other documents in connection
therewith, and (ii) a registration statement, and any and all amendments
thereto, relating to the offering covered hereby filed pursuant to Rule 462(b)
under the Securities Act of 1933, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform each and every act and things requisite or
necessary to be done in and about the premises, as fully to all intents and
purposes as he, she, or it might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
or his substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.
 
     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
                NAME AND SIGNATURE                                  TITLE                      DATE
                ------------------                                  -----                      ----
<S>                                                  <C>                                  <C>
 
/s/ JOSEPH D. REID                                   Chairman of the Board of Directors   April 20, 1999
---------------------------------------------------    and Chief Executive Officer
Joseph D. Reid                                         (Principal Executive Officer)
 
/s/ LEE W. HENDRICKSON                               Senior Vice President and Chief      April 20, 1999
---------------------------------------------------    Financial Officer (Principal
Lee W. Hendrickson                                     Financial and Accounting Officer)
 
/s/ MICHAEL L. KASTEN                                Director                             April 20, 1999
---------------------------------------------------
Michael L. Kasten
</TABLE>
 
                                      II-5
<PAGE>   131
 
<TABLE>
<CAPTION>
                NAME AND SIGNATURE                                  TITLE                      DATE
                ------------------                                  -----                      ----
<S>                                                  <C>                                  <C>
/s/ SLIVY EDMONDS COTTON                             Director                             April 20, 1999
---------------------------------------------------
Slivy Edmonds Cotton
 
/s/ RICHARD N. FLYNN                                 Director                             April 20, 1999
---------------------------------------------------
Richard N. Flynn
 
/s/ GARY W. HICKEL                                   Director                             April 20, 1999
---------------------------------------------------
Gary W. Hickel
 
/s/ MICHAEL J. DEVINE                                Director                             April 20, 1999
---------------------------------------------------
Michael J. Devine
 
/s/ MICHAEL F. HANNLEY                               Director                             April 20, 1999
---------------------------------------------------
Michael F. Hannley
 
/s/ JOHN S. LEWIS                                    Director                             April 20, 1999
---------------------------------------------------
John S. Lewis
 
/s/ HUMBERTO S. LOPEZ                                Director                             April 20, 1999
---------------------------------------------------
Humberto S. Lopez
 
                                                     Director
---------------------------------------------------
Kathryn L. Munro
 
/s/ RONALD K. SABLE                                  Director                             April 20, 1999
---------------------------------------------------
Ronald K. Sable
</TABLE>
 
                                      II-6
<PAGE>   132
 
                                 EXHIBIT INDEX
 
<TABLE>
<C>     <S>  <C>
 *1.1   --   Form of Underwriting Agreement by and between EVEREN
             Securities, Inc. and Sun.
  3.1   --   Articles of Incorporation of Sun.
 *3.2   --   Amendment to the Articles of Incorporation of Sun.
 *3.3   --   Amended and Restated Bylaws of Sun.
 *4     --   Specimen Common Stock Certificate.
 *5     --   Opinion of Snell & Wilmer L.L.P.
 10.1   --   Employment Agreement by and between Sun and Joseph D. Reid,
             dated November 20, 1997.
*10.2   --   Employment Agreement by and between Camelback Community Bank
             and Joseph D. Reid.
*10.3   --   Employment Agreement by and between Mesa Bank and Joseph D.
             Reid, dated March 17, 1998.
*10.4   --   Employment Agreement by and between Southern Arizona
             Community Bank and Joseph D. Reid, dated October 1, 1997.
*10.5   --   Employment Agreement by and between Sunrise Bank of Arizona
             and Joseph D. Reid, dated October 1, 1997.
*10.6   --   Employment Agreement by and between Valley First Community
             Bank and Joseph D. Reid.
 10.7   --   Employment Agreement by and between Sun and John S. Lewis,
             dated November 23, 1998.
 10.8(a) --  Employment Agreement by and between Valley First Community
             Bank and Gary W. Hickel, dated October 1, 1996.
 10.8(b) --  Addendum to Employment Agreement by and between Valley First
             Community Bank and Gary W. Hickel, dated October 1, 1996.
*10.9   --   Employment Memorandum by and between Bank of Tucson and
             Michael F. Hannley, dated November 20, 1997.
 10.10  --   Anti-dilution Agreement by and between Sun and Capitol
             Bancorp Limited
*10.11  --   Stock Option Program.
 21     --   Subsidiaries of Sun.
 23.1   --   Consent of BDO Seidman, LLP.
 23.2   --   Consent of Cotton, Parker, Johnson & Co., P.C.
*23.3   --   Consent of Snell & Wilmer L.L.P. (included in Exhibit 5).
 24.1   --   Powers of Attorney (set forth on signature page included in
             Registration Statement).
 27.1   --   Financial Data Schedule for fiscal year end December 31,
             1998.
 27.2   --   Financial Data Schedule for three months ended March 31,
             1999.
 99.1   --   Consent of Director-Nominee.
</TABLE>
 
-------------------------
 
* To be filed by amendment.
 
                                      II-7