FNB CORP/PA
S-3, 1999-03-19
NATIONAL COMMERCIAL BANKS
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<PAGE>   1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH   , 1999
 
                                          REGISTRATION STATEMENT NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933
                            ------------------------
 
                               F.N.B. CORPORATION
             (Exact name of registrant as specified in its charter)
 
              PENNSYLVANIA                           25-1255406
    (State or other jurisdiction of               (I.R.S. Employer
     incorporation or organization)              Identification No.)
 
                   ONE F.N.B. BOULEVARD, HERMITAGE, PA 16148
                                 (724) 981-6000
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                            ------------------------
 
                                 JOHN D. WATERS
                   VICE PRESIDENT AND CHIEF FINANCIAL OFFICER
                               F.N.B. CORPORATION
                              ONE F.N.B. BOULEVARD
                              HERMITAGE, PA 16148
                                 (724) 981-6000
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)
                            ------------------------
 
                                    COPY TO:
 
                                 DAVID J. LOWE
                             COHEN & GRIGSBY, P.C.
                         11 STANWIX STREET, 15TH FLOOR
                              PITTSBURGH, PA 15222
 
APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this Registration Statement becomes effective.
 
If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [ ]
 
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, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]
 
If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please 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 delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
                                                             PROPOSED MAXIMUM     PROPOSED MAXIMUM
  TITLE OF EACH CLASS OF SECURITIES       AMOUNTS TO BE       OFFERING PRICE     AGGREGATE OFFERING      AMOUNT OF
          TO BE REGISTERED                 REGISTERED            PER UNIT               PRICE         REGISTRATION FEE
<S>                                    <C>                  <C>                  <C>                  <C>
- ----------------------------------------------------------------------------------------------------------------------
Subordinated Term Notes Due 3, 6, 9,
  12, 18, 24, 30, 36, 48, 60, 84 and
  120 Months.........................          --                  100%                  --                  --
- ----------------------------------------------------------------------------------------------------------------------
Subordinated Daily Notes.............          --                  100%                  --                  --
- ----------------------------------------------------------------------------------------------------------------------
     Total...........................     $125,000,000                              $125,000,000          $34,750
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>
 
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 OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                   PROSPECTUS
 
                               F.N.B. CORPORATION
 
                                  $125,000,000
                                       OF
                    SUBORDINATED TERM NOTES AND DAILY NOTES
 
<TABLE>
<S>                    <C>
- -------------------------------------------------
                   TERM NOTES
Available Term:        3, 6, 9, 12, 18, 24, 30,
                       36, 48, 60, 84 and 120
                       months

Minimum Purchase:      $500

Interest:              We will establish the
                       interest rate when you
                       purchase the Term Note-See
                       the Prospectus Supplement
                       for current rates

                       You will have different
                       interest payment options,
                       depending on the term of
                       your Term Note

Redemption:            You can redeem your Term
                       Note at any time but will
                       forfeit some interest
                       We can redeem your Term
                       Note on 30 days' notice

Security and Ranking:  The Term Notes will not be
                       secured by any collateral
                       The Notes will be
                       subordinate to all of our
                       other existing and future
                       senior debt
- -------------------------------------------------
- -------------------------------------------------
                   DAILY NOTES
Term:                  The Daily Notes have no
                       set term

Minimum Purchase:      $50.00

Interest:              We will establish the
                       interest rate when you
                       purchase the Daily
                       Note-See the Prospectus
                       Supplement for current
                       rates

                       Interest is accrued daily,
                       compounded quarterly and
                       is paid when you redeem
                       the Daily Note

Redemption:            You can redeem all or any
                       portion of your Daily Note
                       at any time without
                       penalty

                       We can redeem your Daily
                       Note on 30 days' notice

Security and Ranking:  The Daily Notes will not
                       be secured by any
                       collateral

                       The Daily Notes will be
                       subordinate to all of our
                       existing and future senior
                       debt
- -------------------------------------------------
</TABLE>
 
THE TERM NOTES AND DAILY NOTES ARE NOT DEPOSITS AND ARE NOT INSURED OR
GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER
GOVERNMENTAL AGENCY.
 
YOU SHOULD CAREFULLY CONSIDER THE RISK FACTORS ON PAGE 3 OF THIS PROSPECTUS.
 
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.
 
<TABLE>
<CAPTION>
                                                          PER NOTE       TOTAL
                                                          --------    ------------
<S>                                                       <C>         <C>
Public Offering Price...................................    100%      $125,000,000
Underwriting Discounts..................................    None              None
Proceeds to us (before expenses)........................    100%      $125,000,000
</TABLE>
 
We will sell the Daily Notes and the Term Notes at the offices of our
subsidiary, Regency Finance Company, and its subsidiary, Citizens Financial
Services, Inc. We will not list the Daily Notes or the Term Notes on any
securities exchange or other trading market.
                            ------------------------
 
              THE DATE OF THIS PROSPECTUS IS              , 1999.
<PAGE>   3
 
        IMPORTANT NOTICE ABOUT INFORMATION PRESENTED IN THIS PROSPECTUS
                   AND THE ACCOMPANYING PROSPECTUS SUPPLEMENT
 
Information is provided to you about the Daily Notes and Term Notes in this
Prospectus and the accompanying Prospectus Supplement, which describes the
interest rates applicable to the Notes at the time of your purchase. In making
your investment decision, you should rely only on the information contained or
incorporated by reference in this Prospectus and the Prospectus Supplement. We
have not authorized anyone to provide you with any other information. If you
receive any unauthorized information, you must not rely on it.
 
Cross-references are included in this Prospectus to captions in these materials
where you can find further related discussions. The following Table of Contents
provides the pages on which these captions are located.
 
This Prospectus contains forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933, as amended. Such forward-looking
statements, together with related qualifying language and assumptions, are found
in the material, set forth under "Risk Factors." Forward-looking statements are
also found elsewhere in this Prospectus, and may be identified by, among other
things, accompanying language including the words "expects," "intends,"
"anticipates," "estimates" or analogous expressions, or by qualifying language
or assumptions. Such statements involve known and unknown risks, uncertainties
and other important factors that could cause the actual results or performance
to differ materially from such forward-looking statements. Such risks,
uncertainties and other factors include, among others, general economic and
business conditions, competition, changes in political, social and economic
conditions, regulatory initiatives and compliance with government regulations,
customer preference and various other matters, many of which are beyond our
control. These forward-looking statements speak only as of the date of this
Prospectus. We disclaim any obligation or undertaking to disseminate any updates
or revisions to such forward-looking statements to reflect any change in our
expectations with regard thereto or any change in events, conditions or
circumstances on which any forward-looking statement is based.
 
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                           <C>
Risk Factors................................................    3
Use of Proceeds.............................................    4
Summary Consolidated Financial Data.........................    5
The Company.................................................    7
Description of Notes........................................    9
Plan of Distribution........................................   15
Legal Matters...............................................   15
Independent Auditors........................................   15
Where You Can Find Additional Information...................   15
Information Incorporated by Reference.......................   16
</TABLE>
 
                                        2
<PAGE>   4
 
                                  RISK FACTORS
 
You should carefully consider the following risk factors and other information
contained in this Prospectus before buying the Notes.
 
THE NOTES ARE NOT SECURED, INSURED OR GUARANTEED
 
The Notes are not secured by any of our assets or any other collateral. Also,
the Notes are not bank deposits and are not insured or guaranteed by the FDIC or
any other governmental agency. Therefore, you are increasing your risk of loss
if you buy Notes with funds taken from an insured account held at a bank,
savings and loan association or credit union.
 
YOUR RIGHT TO RECEIVE PAYMENTS ON THESE NOTES IS SUBORDINATE TO ALL OF OUR
SENIOR INDEBTEDNESS
 
According to the terms of the Notes, the payment of the principal and interest
on the Notes is subordinate in right of payment to the prior payment when due of
the principal and interest on all of our Senior Indebtedness. As of December 31,
1998, the total amount of our Senior Indebtedness was $6.0 million and the total
amount of our indebtedness that is equal in right of payment with the Notes was
$132.7 million. We have the absolute right to increase or decrease our Senior
Indebtedness.
 
Holders of Senior Indebtedness will be able to prevent payment on the Notes:
 
- - in the event of our bankruptcy, liquidation or reorganization;
 
- - if there is a payment default under certain Senior Indebtedness; and
 
- - if there are certain non-payment defaults under certain Senior Indebtedness.
 
OUR STATUS AS A HOLDING COMPANY MAKES US DEPENDENT ON DIVIDENDS FROM OUR
SUBSIDIARIES TO MEET OUR OBLIGATIONS
 
We are a holding company and conduct almost all of our operations through our
subsidiaries. We do not have any significant assets other than the stock of our
subsidiaries. Accordingly, we depend on the cash flows of our subsidiaries to
meet our obligations, including the payment of the principal and interest on the
Notes. Our right, and thus the right of the buyers of Notes and our other
creditors, to participate in any distribution of earnings or assets of our
subsidiaries is subject to the prior claims of creditors of such subsidiaries.
As of December 31, 1998, the amount of such claims (excluding deposit
liabilities) was $132.7 million.
 
Under federal and state law, our bank subsidiaries are limited in the amount of
dividends they can pay to us without prior regulatory approval. Also, bank
regulators have the authority to prohibit our subsidiary banks from paying
dividends if they think the payment would be an unsafe and unsound banking
practice.
 
YOU WILL FORFEIT INTEREST IF YOU REDEEM TERM NOTES EARLY
 
If you redeem your Term Notes before the maturity date, you will forfeit one
month of interest earned, or that could have been earned, if you are redeeming a
3, 6, 9 or 12 Month Term Note, or three months of interest earned, or that could
have been earned, if you are redeeming any other Term Note. We may also require
you to give us 30 days' prior written notice before you redeem a Term Note.
 
YOUR ABILITY TO SELL OR TRANSFER THE NOTES WILL BE LIMITED
 
There is no trading market for the Notes and we do not expect one to develop.
You should not purchase the Notes with the expectation that a trading market for
the Notes will subsequently develop. The Notes are
 
                                        3
<PAGE>   5
 
also non-negotiable. You can transfer or assign the Notes only with our consent
and only at the offices of our sales and paying agents, Regency Finance Company
or Citizens Financial Services, Inc.
 
                                USE OF PROCEEDS
 
The Company intends to use the net proceeds from the sale of Notes primarily as
advances to its consumer finance subsidiary, Regency Finance Company, primarily
to fund Regency's lending and purchasing activities and secondarily for general
corporate purposes of the Company.
 
                                        4
<PAGE>   6
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
 
The following table sets forth summary consolidated financial data for the
Company for the periods indicated, giving retroactive effect to the mergers with
West Coast Bank, Seminole Bank and Citizens Holding Corporation, each of which
was accounted for as a pooling of interests. This information should be read in
conjunction with the financial statements and notes thereto incorporated by
reference in this Prospectus.
 
<TABLE>
<CAPTION>
                                                     AT OR FOR THE YEAR ENDED DECEMBER 31,
                                         --------------------------------------------------------------
                                            1998         1997         1996         1995         1994
                                         ----------   ----------   ----------   ----------   ----------
                                                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                      <C>          <C>          <C>          <C>          <C>
SUMMARY OF OPERATIONS:
Interest income........................  $  235,985   $  216,278   $  202,380   $  190,743   $  164,346
Interest expense.......................     103,385       92,664       84,736       81,660       65,043
                                         ----------   ----------   ----------   ----------   ----------
  Net interest income..................     132,600      123,614      117,644      109,083       99,303
Provision for loan losses..............       7,255       11,100        9,773        7,174        9,369
                                         ----------   ----------   ----------   ----------   ----------
  Net interest income after provision
    for loan losses....................     125,345      112,514      107,871      101,909       89,934
Non-interest income....................      31,745       25,978       22,822       21,678       19,545
Non-interest expenses..................     109,174       98,330       97,875       87,155       82,550
                                         ----------   ----------   ----------   ----------   ----------
Income before taxes....................      47,916       40,162       32,818       36,432       26,929
Income taxes...........................      16,044       12,771       10,951       12,122        9,000
                                         ----------   ----------   ----------   ----------   ----------
  Net income before extraordinary
    items..............................      31,872       27,391       21,867       24,310       17,929
Extraordinary items, net of tax........          --        8,809           --           --           --
                                         ----------   ----------   ----------   ----------   ----------
Net income.............................  $   31,872   $   36,200   $   21,867   $   24,310   $   17,929
                                         ==========   ==========   ==========   ==========   ==========
Recurring net income...................  $   35,500   $   31,956   $   26,010   $   24,310   $   17,929
                                         ==========   ==========   ==========   ==========   ==========
PER SHARE DATA (A):
Net income:
  Basic................................  $     1.75   $     2.05   $     1.22   $     1.37   $     1.02
  Diluted..............................        1.68         1.95         1.19         1.32         1.01
Recurring net income*
  Basic................................        1.96         1.81         1.46         1.37         1.02
  Diluted..............................        1.87         1.72         1.41         1.32         1.01
Cash dividends.........................         .71          .60          .57          .31          .23
Book value, end of period..............       14.82        14.14        13.21        11.86        10.44
SELECTED PERIOD END BALANCES:
Assets.................................  $3,250,695   $2,967,482   $2,680,096   $2,487,518   $2,318,405
Net loans..............................   2,298,834    2,064,998    1,873,050    1,685,317    1,589,684
Deposits...............................   2,708,572    2,467,057    2,240,572    2,116,099    1,952,496
Long-term debt.........................      69,492       72,246       58,179       50,784       56,614
Preferred stock........................       2,380        2,875        3,525        4,516        4,563
Stockholders' equity...................     272,158      260,251      225,649      212,514      187,516
</TABLE>
 
- ---------------
 
*    Recurring net income excludes merger related and other non-recurring costs
     of $3.6 million in 1998, extraordinary gains on the sale of a subsidiary
     and branches of $8.8 million and merger related and other non-recurring
     costs of $4.6 million in 1997 and a one-time assessment of $2.1 million
     legislated by Congress to recapitalize the Savings Association Insurance
     Fund and merger related and other non-recurring costs of $2.0 million in
     1996, all on an after-tax basis.
 
(A)  Net income per common share is based on weighted average shares outstanding
     adjusted retroactively for stock splits and stock dividends. Cash dividends
     per common share are based on the actual cash dividends declared adjusted
     for stock splits and stock dividends. Book value per common share is based
     on shares outstanding at each period-end adjusted retroactively for stock
     splits and stock dividends.
 
                                        5
<PAGE>   7
 
<TABLE>
<CAPTION>
                                                    AT OR FOR THE YEAR ENDED DECEMBER 31,
                                                  ------------------------------------------
                                                   1998     1997     1996     1995     1994
                                                  ------   ------   ------   ------   ------
<S>                                               <C>      <C>      <C>      <C>      <C>
SELECTED PERFORMANCE RATIOS:
Return on average assets........................    1.03%    1.32%     .85%    1.01%     .80%
Return on average equity........................   11.96    15.21     9.91    12.13    10.03
Recurring net income:
  Return on average assets......................    1.15     1.16     1.02     1.01      .80
  Return on average equity......................   13.32    13.43    11.79    12.13    10.03
Total equity/total assets.......................    8.37     8.77     8.42     8.54     8.09
Net interest margin (fully taxable
  equivalent)...................................    4.71     4.90     5.03     4.98     4.83
Dividend payout.................................   38.96    25.24    29.02    14.87    15.01
ASSET QUALITY RATIOS:
Non-performing loans/total loans................     .60      .46      .68      .78      .96
Allowance for loan losses/non-performing
  loans.........................................  223.35   308.79   232.76   198.64   159.87
Non-performing assets/total assets (B)..........     .47      .46      .76      .75      .90
Ratio of earnings to fixed charges..............    1.45%    1.41%    1.37%    1.42%    1.38%
</TABLE>
 
- ---------------
 
Notes:
 
(B)  Non-performing assets include non-accrual loans, other real estate owned
     and restructured loans.
 
                                        6
<PAGE>   8
 
                                  THE COMPANY
 
GENERAL
 
F.N.B. Corporation, or the "Company," is a financial services holding company
headquartered in Hermitage, Pennsylvania. It provides a broad range of financial
services to its customers through its bank and consumer finance subsidiaries in
Pennsylvania, southwestern Florida, eastern Ohio and southwestern New York. The
Company's main office is located at One F.N.B. Boulevard, Hermitage,
Pennsylvania 16148 and its telephone number is (724) 981-6000.
 
The Company was formed in 1974 and currently operates ten bank subsidiaries and
one consumer finance company in Pennsylvania, southwestern Florida, eastern Ohio
and southwestern New York. On January 13, 1999, the Company completed its
acquisition of Guaranty Bank and Trust Company, a Florida state bank, located in
Venice, Florida with assets of approximately $154.0 million, which it
subsequently merged with West Coast Bank to form West Coast Guaranty Bank, N.A.
As of December 31, 1998, including Guaranty Bank and Trust Company, the Company
had approximately $3.4 billion in consolidated assets, approximately $2.9
billion in deposits and 122 offices.
 
The Company, through its subsidiaries, provides a full range of financial
services, principally to consumers and small to medium-size businesses in its
market areas. The Company's business strategy has been to focus primarily on
providing quality, community-based financial services adapted to the needs of
each of the markets it serves. The Company has emphasized its community
orientation by generally preserving the names and local boards of directors of
its subsidiaries, by allowing its subsidiaries autonomy in decision-making and
thus enabling them to respond to customer requests more quickly, and by
concentrating on transactions within its market areas. However, while the
Company has sought to preserve the identities and autonomy of its subsidiaries,
it has established centralized credit analysis, loan review, investment, audit
and data processing functions. The centralization of these processes has enabled
the Company to maintain consistent quality of these functions and to achieve
certain economies of scale.
 
The Company's lending philosophy is to minimize credit losses by following
uniform credit approval standards (which include independent analysis of
realizable collateral value), diversifying its loan portfolio, maintaining a
relatively modest average loan size and conducting ongoing review and management
of the loan portfolio. The Company is an active residential mortgage lender, and
its commercial loans are generally to established local businesses. The Company
does not have a significant amount of construction loans and has no highly
leveraged transaction loans or loans to foreign countries.
 
No material portion of the deposits of the Company's subsidiaries has been
obtained from a single or small group of customers, and the loss of any
customer's deposits or a small group of customers' deposits would not have a
material adverse effect on the business of the Company.
 
                                        7
<PAGE>   9
 
Information as of December 31, 1998 for the Company's existing bank and consumer
finance subsidiaries (including the year established and location of principal
office for each) is set forth below. All subsidiaries are wholly-owned by the
Company.
 
<TABLE>
<CAPTION>
                                                                                     NUMBER OF
                                                           TOTAL         TOTAL         BRANCH
                                                           ASSETS       DEPOSITS      OFFICES
                                                         ----------    ----------    ----------
                                                                 (DOLLARS IN THOUSANDS)
<S>                                                      <C>           <C>           <C>
BANK SUBSIDIARIES:
First National Bank of Pennsylvania (est. 1864)
  Hermitage, Pennsylvania..............................  $1,229,283    $1,075,911        36
First National Bank of Naples (est. 1988)
  Naples, Florida......................................     664,500       519,109         7
First National Bank of Florida (est. 1997)
  Clearwater, Florida..................................     325,330       280,360        12
Cape Coral National Bank (est. 1994)
  Cape Coral, Florida..................................     301,056       271,987         5
West Coast Guaranty Bank, N.A. (est. 1999)*
  Sarasota, Florida....................................     273,410       235,951         7
Metropolitan National Bank (est. 1922)
  Youngstown, Ohio.....................................     246,696       216,388         8
Reeves Bank (Est. 1868)
  Beaver Falls, Pennsylvania...........................     143,972       130,880         8
First National Bank of Fort Myers (est. 1989)
  Fort Myers, Florida..................................      82,998        74,623         2
First County Bank, N.A. (est. 1987)
  Chardon, Ohio........................................      62,210        57,527         3
     Totals............................................  $3,329,455    $2,862,736        88
CONSUMER FINANCE SUBSIDIARY:
Regency Finance Company (est. 1927)
  Hermitage, Pennsylvania..............................  $   88,154           N/A        34
</TABLE>
 
- ---------------
 
* Formed upon the merger of Guaranty Bank and Trust Company and West Coast Bank
  on February 12, 1999.
 
The Company has five other operating subsidiaries, Penn-Ohio Life Insurance
Company, Mortgage Service Corporation, F.N.B. Building Corporation, F.N.B.
Investment Corporation and Customer Service Center of F.N.B., L.L.C. Penn-Ohio
Life Insurance Company underwrites, as a reinsurer, credit life and accident and
health insurance sold by the Company's subsidiaries. These activities are
incidental to the Company's banking business. Mortgage Service Corporation
services mortgage loans for unaffiliated financial institutions, F.N.B. Building
Corporation owns real estate that is leased to certain subsidiaries, F.N.B.
Investment Corporation holds equity securities and other miscellaneous assets on
behalf of the Company and Customer Service Center performs data processing and
other services for the Company and its affiliates.
 
As of February 28, 1999, the Company and its subsidiaries had approximately
1,508 full-time equivalent employees.
 
OPERATIONS OF THE BANK SUBSIDIARIES
 
The Company's bank subsidiaries offer services traditionally offered by
full-service commercial banks, including commercial and individual demand and
time deposit accounts, commercial, mortgage and
 
                                        8
<PAGE>   10
 
individual installment loans, credit card and discount brokerage services
through correspondent banks, night depository, automated teller services,
computer services, safe deposit boxes, money order services, travelers checks,
government savings bonds, food stamp sales and utility bill payments. The bank
subsidiaries also offer alternative investment products including mutual funds,
annuities and discount brokerage.
 
In addition, the Company offers a broad range of personal and corporate
fiduciary services, including the administration of decedent and trust estates.
As of December 31, 1998, trust assets under management totaled $670.0 million.
 
OPERATIONS OF THE CONSUMER FINANCE SUBSIDIARY
 
The Company's consumer finance subsidiary is involved principally in making
personal installment loans to individuals and purchasing installment sales
finance contracts from retail merchants.
 
OTHER INFORMATION
 
As part of its operations, the Company regularly evaluates the potential
acquisition of, and holds discussions with, various financial institutions and
other businesses of a type eligible for bank holding company investment. In
addition, the Company regularly analyzes the values of, and submits bids for,
the acquisition of customer-based funds and other liabilities and assets of such
financial institutions and other businesses. As a general rule, the Company
publicly announces such material acquisitions when a definitive agreement has
been reached.
 
For further information about the Company, reference is made to the Company's
Annual Report on Form 10-K for the year ended December 31, 1998, which is
incorporated herein by reference. Investors desiring a copy of such report may
(i) contact the Company at its address or telephone number indicated under
"Information Incorporated by Reference" or (ii) access the SEC's website at
"http://www/sec.gov."
 
                              DESCRIPTION OF NOTES
 
GENERAL
 
The Company will issue the Notes under an Indenture, dated as of May 15, 1992,
as supplemented by the First Supplemental Indenture dated as of January 1, 1994,
(the "Indenture"), between the Company and Chase Manhattan Trust Company,
National Association, successor to Northern Central Bank, as trustee (the
"Trustee"). The Notes will be subordinated, unsecured obligations of the
Company. The material terms, provisions and covenants contained in the Notes and
the Indenture are described below.
 
The Notes will be subordinate in right of payment to Senior Indebtedness of the
Company, as described below under "Subordination." The Indenture does not limit
the incurrence of Senior Indebtedness or any other debt, secured or unsecured,
of the Company or any of its subsidiaries, nor does it contain any terms which
would afford protection to holders of the Notes ("Holders") issued thereunder in
the event of a recapitalization, a change in control, a highly leveraged
transaction or a restructuring involving the Company.
 
The Notes will be obligations of the Company only. Because the Company is a
holding company, its rights and the rights of its creditors, including the
Holders of the Notes, to participate in the distribution of the assets of any of
the Company's subsidiaries upon liquidation, dissolution or reorganization of a
subsidiary will be subject to the prior claims of the subsidiaries' creditors
(including depositors in a bank or savings and loan subsidiary), except to the
extent that the Company may itself be a creditor with recognized claims against
the subsidiary.
 
                                        9
<PAGE>   11
 
The terms of the Notes include those stated in the Indenture and those made part
of the Indenture by reference to the Trust Indenture Act of 1939, as amended
(the "Trust Indenture Act") as in effect on the date of the Indenture. The Notes
are subject to all such terms, and holders of the Notes are referred to the
Indenture and the Trust Indenture Act for a statement of them. The statements
under this caption relating to the Indenture, a copy of which is filed as an
exhibit to the Registration Statement, and the Notes are summaries and do not
purport to be complete. Such summaries make use of certain terms defined in the
Indenture and are qualified in their entirety by express reference to the
Indenture.
 
TERMS OF SUBORDINATED TERM NOTES
 
Subordinated Term Notes Due 3 Months or 6 Months.
 
The Company will issue each 3 Month and 6 Month Term Note in the minimum
principal amount of $500 and such Term Notes will mature 3 months or 6 months,
respectively, after their date of issue. The Company will determine, from time
to time, the rate of interest payable on such Term Notes. The rate of interest
at the time of purchase will be the rate payable throughout the original term of
the Term Note. The Company will pay interest, at the Holder's option, either
monthly or at maturity.
 
Each 3 Month and 6 Month Term Note will automatically extend for an additional
term, equal in duration to the original term, at the rate of interest then in
effect for Term Notes of comparable maturity. All of the other terms and
conditions applicable to the Term Notes when issued will also apply during each
extension term. The Holder may elect not to extend the term by notifying the
Company of his intention to redeem the Term Note.
 
Subordinated Term Notes Due 9 Months, 12 Months, 18 Months, 24 Months, 30
Months, 36 Months, 48 Months, 60 Months, 84 Months or 120 Months.
 
The Company will issue each 9, 12, 18, 24, 30, 36, 48, 60, 84, and 120 Month
Term Note in the minimum principal amount of $500. Such Term Notes will mature 9
months, 12 months, 18 months, 24 months, 30 months, 36 months, 48 months, 60
months, 84 months or 120 months after their date of issue. The Company will
determine, from time to time, the rate of interest payable on such Term Notes.
The rate of interest at the time of purchase will be payable throughout the
original term of the Term Note. The Company will pay interest, at the Holder's
option, either monthly or quarterly, or will compound the interest quarterly.
 
These Term Notes will automatically extend for additional terms, equal in
duration to their original terms, at the rate(s) of interest then in effect for
Term Notes of comparable maturity. All of the other terms and conditions
applicable to such Term Notes when issued will also apply during each extension
term. The Holder may elect not to extend the term by notifying the Company of
the Holder's intention to redeem the Term Note.
 
Redemption of Term Notes at Option of Holder.
 
The Holder of a Term Note will have the right, at such Holder's option, to
redeem the Term Note, in whole or in part, prior to maturity, provided that a
partial redemption may not reduce the principal amount of the Term Note below
$500. If the Holder redeems, in whole or in part, a 3 Month, 6 Month, 9 Month or
a 12 Month Term Note, the Holder will forfeit one month of interest earned, or
that could have been earned, on the amount redeemed at the rate being paid on
the Term Note, regardless of the length of time that the Holder has owned the
Term Note. If the Holder redeems, in whole or in part, an 18 Month, 24 Month, 30
Month, 36 Month, 48 Month, 60 Month, 84 Month or 120 Month Term Note, the Holder
will forfeit 3 months of interest earned, or that could have been earned, on the
amount redeemed at the rate being paid on the Term Note, regardless of the
length of time that the Holder has owned the Term Note. Where
 
                                       10
<PAGE>   12
 
necessary to comply with the requirements of this paragraph, the Company will
deduct interest already paid to or for the account of the Holder from the amount
redeemed.
 
Term Notes may be redeemed before maturity without forfeiture of interest upon
the death of any Holder or if the Holder is determined to be legally
incompetent. The Company may require the Holder to give the Company no less than
thirty (30) days' prior written notice, by first class mail, of a redemption
demanded by the Holder. The Holder must specify in the notice the principal
amount of the Term Note to be redeemed and the redemption date.
 
TERMS OF SUBORDINATED DAILY NOTES
 
The Company will issue Daily Notes in the minimum original principal amount of
$50. Holders of Daily Notes may increase or decrease the original principal
amount at any time by making additional purchases or partial redemptions. Each
partial redemption must be in the minimum amount of $50 and may not reduce the
principal amount of the Daily Note below $50. Upon request of the Holder of a
Daily Note, the Company will record on the Daily Note any adjustments to the
original principal amount, such as additional purchases or partial redemptions.
 
If the Holder redeems a Daily Note in full, such Daily Note must be surrendered
by the Holder to the Company and the Company will pay to the Holder the
outstanding principal amount thereof, together with any accrued but unpaid
interest. The Company may require the Holder to give the Company no less than
thirty (30) days' prior written notice, by first class mail, of a redemption
demanded by the Holder. The Holder must specify in the notice the principal
amount of the Daily Note to be redeemed and the redemption date.
 
The Company will determine the interest rate payable on the Daily Note. The
interest rate may increase or decrease on a monthly basis. The Company will make
each adjustment, if any, to the interest rate on the first day of the month. The
interest rate, once adjusted, will be effective on the first day of each month
and will remain in effect until next adjusted by the Company. Interest will be
accrued daily and compounded quarterly.
 
GENERAL PROVISIONS APPLICABLE TO ALL NOTES
 
Optional Redemption by the Company.
 
The Company has the right, at its option, to call any of the Notes for
redemption before maturity, at any time. The Company will make each partial
redemption payment ratably on all the outstanding Notes of the particular series
called for redemption. Interest on the Notes will continue to accrue until the
date of redemption and no premium will be paid on such Notes. The Company will
give each Holder at least thirty (30) days' prior written notice by first class
mail of each redemption, specifying, among other things, the principal amount of
the Note to be redeemed and the redemption date. Once the Company gives a notice
of redemption, the principal amount of the Note specified in such notice,
together with accrued and unpaid interest to the redemption date, will become
due and payable on the redemption date.
 
Subordination.
 
The indebtedness evidenced by the Notes is subordinate to the prior payment when
due of the principal of and interest on all Senior Indebtedness. Upon maturity
of any Senior Indebtedness, the Company must make payment in full on such Senior
Indebtedness before it can make any payment on the Notes. The Company may not
make any payment on the Notes while it is in default on the payment of any
Senior Indebtedness, or while any other event of default exists with respect to
Senior Indebtedness pursuant to which the holders thereof have accelerated the
maturity thereof. If the assets of the Company are distributed
 
                                       11
<PAGE>   13
 
in any dissolution, winding up, liquidation or reorganization, payment of the
principal of and interest on the Notes will be subordinated, to the extent and
in the manner set forth in the Indenture, to the prior payment in full of all
Senior Indebtedness. The Indenture does not limit the Company's ability to
increase the amount of Senior Indebtedness or to incur any additional
indebtedness in the future that may affect the Company's ability to make
payments under the Notes. Except as described above, the obligation of the
Company to make payment of principal or interest on the Notes will not be
affected. The Holders of the Notes will be subrogated to the rights of the
holders of the Senior Indebtedness to the extent of payments made on Senior
Indebtedness out of the distributive share of the Notes. By reason of such
subordination, in the event of a distribution of assets upon insolvency, certain
general creditors of the Company may recover more, ratably, than Holders of the
Notes.
 
"Senior Indebtedness" means Indebtedness of the Company outstanding at any time
other than (1) Indebtedness of the Company to a Subsidiary for money borrowed or
advanced from any such Subsidiary and (2) Indebtedness which by its terms is not
superior in right of payment to the Notes.
 
"Indebtedness" means (1) any debt of the Company (i) for borrowed money or (ii)
evidenced by a note, debenture or similar instrument (including a purchase money
obligation) given in connection with the acquisition of any property or assets,
including securities; (2) any debt of others described in the preceding clause
(1) which the Company has guaranteed or for which it is otherwise liable; and
(3) any amendment, renewal, extension or refunding of any such debt. As of
December 31, 1998, the outstanding amount of Senior Indebtedness of the Company
was approximately $6.0 million.
 
Defaults and Remedies.
 
The term "Events of Default" when used in the Indenture means any one of the
following: (i) failure of the Company to pay interest which failure continues
for 30 days, or failure to pay principal of (or premium, if any, on) any of the
Notes when due (whether or not prohibited by the subordination provisions); (ii)
failure to perform any other covenant or breach of any warranty continuing for
60 days after the Company receives written notice of such failure or breach;
(iii) the default under any instrument governing indebtedness of the Company or
any subsidiary for money borrowed or guaranteed which constitutes a failure to
pay principal in an aggregate principal amount exceeding $1,000,000 or which has
resulted in an aggregate principal amount of at least $1,000,000 becoming or
being declared due prior to its stated maturity, and which default is not cured
within 30 days after the Company receives written notice thereof; and (iv)
certain events of bankruptcy, insolvency or reorganization involving the Company
or certain of its subsidiaries.
 
The Indenture provides that the Trustee will, within 90 days after the
occurrence of a default, mail to the Holders notice of all uncured defaults
known to it (the term "default" for this purpose only means the happening of any
Event of Default specified above, excluding grace periods). In the case of
default in the payment of principal of or interest on any of the Notes, the
Trustee will be protected in withholding such notice if it in good faith
determines that the withholding of such notice is in the interest of the
Holders.
 
If an Event of Default occurs and is continuing, the Trustee or the Holders of
not less than 25% in aggregate principal amount of any series of the Notes then
outstanding, by notice in writing to the Company (and to the Trustee if given by
the holders), may declare the principal of and all accrued interest on all the
Notes of such series to be due and payable immediately. The Holders of a
majority in principal amount of such series of Notes may rescind such
declaration if (1) the Company has paid or deposited with the Trustee a sum
sufficient to pay all overdue interest on such series of Notes and principal of
(and premium, if any, on) any Notes which have become due otherwise than by such
declaration of acceleration and (2) all existing Events of Default have been
cured or waived.
 
Defaults (except, unless cured, a default in payment of principal of or interest
on the Notes or a default with respect to a provision which cannot be modified
under the terms of the Indenture without the consent of
 
                                       12
<PAGE>   14
 
each Holder affected) may be waived by the Holders of a majority in principal
amount of a series of Notes (with respect to such series) upon the conditions
provided in the Indenture.
 
The Indenture requires the Company to file periodic reports with the Trustee as
to the absence of defaults.
 
A director, officer, employee or stockholder, as such, of the Company will not
have any liability for any obligations of the Company under the Notes or the
Indenture or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder, by accepting a Note, waives and
releases all such liability. The waiver and release are part of the
consideration for the issue of the Notes.
 
Consolidation, Merger, Conveyance, Transfer or Lease.
 
The Company may not consolidate with, merge into, or transfer or lease
substantially all of its assets to, any other corporation unless the successor
corporation assumes all obligations of the Company under the Indenture and the
Notes and certain other conditions are met. Thereafter all such obligations of
the Company will terminate and the successor corporation formed by such
consolidation or into which the Company is merged or to which such transfer or
lease is made will succeed to all rights and powers of the Company under the
Indenture.
 
The Indenture prohibits the issuance, sale, assignment, transfer or other
disposition of shares of, or securities convertible into, or options, warrants
or rights to subscribe for or purchase shares of a subsidiary, or any
successors, or mergers or consolidations involving a subsidiary, or sales or
transfers of assets substantially as an entirety by any subsidiary. The Company
may, with respect to any subsidiary that is not a Principal Member Bank (as
defined in the Indenture), (1) dispose of any shares of stock or (2) issue
shares of stock or permit a merger, consolidation or sale or lease of assets if
the consideration received at least equals the fair value of the shares or
assets transferred and either the Company's pro rata interest in the subsidiary
is maintained or the Company owns no shares of the subsidiary immediately after
the transaction. The Indenture does not prohibit such dispositions (i) if made
in compliance with any order of the court or regulatory authority or made as a
condition imposed by a court or authority to the acquisition by the Company of
any entity, or (ii) when the proceeds are, within 270 days, or such longer
period of time as may be necessary to obtain requisite regulatory approvals, to
be invested in a subsidiary (including any entity which upon such investment
becomes a subsidiary) engaged in a business legally permissible for bank holding
companies.
 
Modification of the Indenture.
 
The Company and the Trustee may supplement or amend the Indenture under certain
specified circumstances, without the consent of any Holder, including to cure
any ambiguity, to correct or supplement any other provision thereof, to evidence
the succession of a successor to the Company or the Trustee, to add to the
covenants of the Company for the benefit of the Holders or additional Events of
Default, to secure the Notes, or to add any other provisions with respect to
matters or questions arising thereunder which the Company and the Trustee deem
necessary or desirable and which do not adversely affect the interests of the
Holders. Otherwise, the rights and obligations of the Company and the rights of
the Holders may be modified by the Company and the Trustee only with the consent
of the Holders of a majority in principal amount of each series of Notes then
outstanding.
 
Consumer Finance Subsidiary as Selling Agent and Paying Agent of the Company.
 
Regency Finance Company, and its subsidiary, Citizens Financial Services, Inc.,
will act as selling agents and paying agents of the Company. Therefore, the
Holders will make all payments for Notes to Regency or Citizens, as agent for
the Company, and Regency or Citizens will make all principal and certain
interest payments to the Holders, as agent for the Company.
 
                                       13
<PAGE>   15
 
Notes Non-Negotiable.
 
The Notes are non-negotiable and no rights of ownership may be transferred by
mere endorsement and delivery of a Note to a purchaser. All transfers and
assignments of Notes may be made only at the offices of Regency Finance Company
or its subsidiary, Citizens Financial Services, Inc., upon presentation of the
Note and recordation of such transfer or assignment in the books of the Company.
 
Satisfaction and Discharge of Indenture.
 
The Indenture will be discharged and cancelled upon payment of all securities
issued under the Indenture, including the Notes, or upon deposit with the
Trustee, within not more than one year prior to the maturity of all the
outstanding securities issued under the Indenture, of funds sufficient for such
payment or redemption.
 
The Trustee.
 
The Trustee is Chase Manhattan Trust Company, National Association, successor to
Northern Central Bank. Notice to the Trustee should be directed to One Oxford
Centre, 301 Grant Street, Suite 1100, Pittsburgh, Pennsylvania 15219.
 
The Holders of a majority in principal amount of all outstanding series of Notes
have the right to direct the time, method and place of conducting any proceeding
for exercising any remedy available to the Trustee, provided that such direction
would not conflict with any rule of law or with the Indenture, would not be
prejudicial to the rights of another Holder and would not subject the Trustee to
personal liability. The Indenture provides that in case an Event of Default
should occur and be known to the Trustee (and not be cured), the Trustee will be
required to use the degree of care of a prudent man in the conduct of his own
affairs in the exercise of its power. Subject to such provisions, the Trustee
will be under no obligation to exercise any of its rights or powers under the
Indenture at the request of any of the Holders unless they shall have offered to
the Trustee security and indemnity satisfactory to it.
 
Federal Income Tax Considerations.
 
A Holder of Notes may be subject to "backup withholding" under certain
circumstances. Backup withholding applies to a Holder who is a United States
person if the Holder, among other things,
 
(1) fails to furnish his social security number or other taxpayer identification
    number ("TIN") to the payer responsible for backup withholding (for example,
    the Holder's securities broker),
 
(2) furnishes such payer an incorrect TIN,
 
(3) fails to provide such payer with a certified statement, signed under
    penalties of perjury, that the TIN provided to the payer is correct and that
    the Holder is not subject to backup withholding, or
 
(4) fails to report properly interest and dividends on his tax return. Backup
    withholding, however, does not apply to payments made to certain exempt
    recipients, such as corporations and tax-exempt organizations. The backup
    withholding rate is 31% of "reportable payments," which generally will
    include interest on Notes.
 
Under present law all interest earned on the Notes will be taxable each year for
Federal income tax purposes. Even though interest on certain series of Notes may
be accrued during a calendar year but not paid until a future year, the accrued
interest may be taxable for Federal income tax purposes during the calendar year
of accrual.
 
Holders of Notes should consult their own tax advisors about the federal, state
and local tax consequences of owning Notes.
 
                                       14
<PAGE>   16
 
                              PLAN OF DISTRIBUTION
 
Officers and employees of Regency, the Company's consumer finance subsidiary,
and its wholly-owned subsidiary, Citizens Financial Services, Inc., will sell
the Notes without registration as brokers or dealers in reliance upon the safe
harbor provided by Rule 3a4-1 under the Exchange Act. Such officers and
employees will not receive any commissions or direct or indirect compensation in
connection with the sale of the Notes.
 
The Company will market the Notes through the use of newspaper advertisements
and signs in the Regency offices and through the provision of copies of this
Prospectus to customers who inquire about purchasing the Notes. The Company will
not market the Notes through any mass mailings, telephone calls or other
personal solicitation.
 
                                 LEGAL MATTERS
 
The law firm of Cohen & Grigsby, P.C., Pittsburgh, Pennsylvania, rendered an
opinion regarding the validity of the Notes covered by this Prospectus.
 
                              INDEPENDENT AUDITORS
 
The consolidated financial statements of the Company at December 31, 1998 and
1997, and for each of the three years in the period ended December 31, 1998,
have been audited by Ernst & Young LLP, independent auditors, as set forth in
their report thereon, included in the Company's Annual Report on Form 10-K for
the year ended December 31, 1998, and incorporated herein by reference. As to
1997, their report is based, in part, on the reports of Hacker, Johnson, Cohen &
Grieb, PA, independent auditors, who audited Seminole Bank and Citizens Holding
Corporation. As to 1996, their report is based, in part, on the reports of Hill,
Barth & King, Inc., independent auditors, who audited Southwest Banks, Inc.,
PricewaterhouseCoopers LLP, independent auditors, who audited West Coast
Bancorp, Inc., and Hacker, Johnson, Cohen & Grieb, PA, independent auditors, who
audited Seminole Bank and Citizens Holding Corporation.
 
The financial statements referred to above are incorporated herein by reference
in reliance upon such reports given upon the authority of such firms as experts
in accounting and auditing.
 
                   WHERE YOU CAN FIND ADDITIONAL INFORMATION
 
The Company files annual, quarterly and special reports, proxy statements and
other information with the SEC. You may read and copy any report, statements or
other information filed by the Company at the SEC's public reference rooms in
Washington, D.C., New York, New York, or Chicago, Illinois. Please call the SEC
at 1-800-SEC-0330 for further information on the public reference rooms. The
Company's SEC filings are also available to the public from commercial document
retrieval services and at the web site maintained by the SEC at
"http://www.sec.gov."
 
The Company has filed a Registration Statement on Form S-3 to register with the
SEC the Notes sold under this Prospectus. This Prospectus is part of that
Registration Statement. As allowed by the SEC rules, this Prospectus does not
contain all the information you can find in the Registration Statement or the
exhibits to the Registration Statement.
 
                                       15
<PAGE>   17
 
                     INFORMATION INCORPORATED BY REFERENCE
 
The SEC allows us to "incorporate by reference" certain information in this
Prospectus which means that we can disclose important information to you by
referring you to another document filed separately with the SEC by the Company.
The information incorporated by reference is deemed to be part of this
Prospectus, except for any information superseded by information in the
Prospectus. This Prospectus incorporates by reference the documents set forth
below that the Company has previously filed with the SEC. These documents
contain important information about the Company and its finances.
 
<TABLE>
<CAPTION>
COMPANY FILINGS (SEC FILE NO. 08144)               PERIOD
- ------------------------------------               ------
<S>                                                <C>
Annual Report on Form 10-K                         the year ended December 31, 1998
</TABLE>
 
We further incorporate by reference additional documents that the Company files
with the SEC between the date of this Prospectus and the date the offering of
Notes is terminated.
 
Upon request the Company will provide, without charge, a copy of any or all of
the documents incorporated by reference in this document (other than exhibits to
the documents, unless the exhibits are specifically incorporated by reference).
Your requests for copies should be directed to F.N.B. Shareholder Services, P.O.
Box 413043, Naples, FL 34101-3043, Telephone: 800-490-3951.
 
                                       16
<PAGE>   18
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
The following expenses will be incurred in connection with the issuance and
distribution of the securities being registered:
 
<TABLE>
<S>                                                             <C>
Securities and Exchange Commission Fee*.....................    $34,750.00*
Printing and engraving expenses.............................     12,000.00
Legal fees and expenses.....................................     12,000.00
Accounting fees and expenses................................     10,000.00
Trustee fees................................................      6,000.00
Miscellaneous expenses......................................      5,000.00
                                                                ----------
     Total..................................................    $79,750.00
                                                                ==========
</TABLE>
 
- ---------------
 
* Exact; all other fees and expenses are estimates.
 
ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
Numbered Paragraph 6.b of the Articles of Incorporation, as amended, of F.N.B.
Corporation provides as follows:
 
        Directors and Officers of the Corporation shall be indemnified as of
     right to the fullest extent now or hereafter permitted by law in connection
     with any actual or threatened action, suit or proceedings, civil, criminal,
     administrative, investigative or other (whether brought by or in the right
     of the Corporation or otherwise), arising out of their service to the
     Corporation or to another organization at the request of the Corporation,
     or because of their positions with the Corporation. Persons who are not
     Directors or Officers of the Corporation may be similarly indemnified in
     respect of such service to the extent authorized at any time by the Board
     of Directors of the Corporation. The Corporation may purchase and maintain
     insurance to protect itself and any such Director, Officer or other person
     against any liability, cost or expense asserted against or incurred by him
     in respect of such service, whether or not the Corporation would have the
     power to indemnify him against such liability by law or under the
     provisions of this paragraph. The provisions of this paragraph shall be
     applicable to persons who have ceased to be Directors or Officers, and
     shall inure to the benefit of the heirs, executors and administrators of
     persons entitled to indemnity hereunder.
 
Article IX of the Bylaws of F.N.B. Corporation provides that the Corporation
shall indemnify each director and officer of the Corporation and of its
controlled subsidiaries made or threatened to be made a party to any civil,
criminal, administrative action, suit or proceeding (whether brought by or in
the name of the Corporation or otherwise) arising out of such director's or
officer's service to the Corporation or to another organization at the
Corporation's request against all expenses (including attorneys' fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by such director and officer in connection with such action, suit or proceeding.
Indemnification shall not be made with respect to actions, suits or proceedings
where the act or omission giving rise to the claim for indemnification has been
determined to have constituted willful misconduct or recklessness or where
prohibited by law. In addition, expenses incurred by each director and officer
in defending any such action, suit or proceeding, shall be paid by the
Corporation in advance of the final disposition of such action, suit or
proceeding if an undertaking (in form and scope satisfactory to the Corporation)
shall have been furnished to the Corporation to repay amounts so advanced if and
to the extent it shall ultimately be determined that such officer or director is
not entitled
 
                                      II-1
<PAGE>   19
 
to indemnification and certain other conditions shall have been satisfied. The
Corporation may purchase and maintain insurance, create a fund of any nature,
grant a security interest or otherwise secure or insure in any manner its
indemnification obligations.
 
Article II, Section 17 of the Bylaws of F.N.B. Corporation provides that to the
fullest extent permitted by law, no director of the Corporation shall be
personally liable for monetary damages for any action taken, or any failure to
take any action.
 
Section 1741 of the Pennsylvania Business Corporation Law (the "BCL") provides
that a corporation shall (subject to the provisions described in the second
succeeding paragraph) have the power to indemnify any person who was or is a
party, or is threatened to be made a party, to any threatened, pending or
completed action or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation), by
reason of the fact that such person is or was a representative of the
corporation, or is or was serving at the request of the corporation as a
representative of another domestic or foreign corporation for profit or
not-for-profit, partnership, joint venture, trust or other enterprise, against
expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by such persons in connection with
the action or proceeding if such person acted in good faith and in a manner he
reasonably believed to be in, or not opposed to, the best interests of the
corporation and, with respect to any criminal proceeding, had no reasonable
cause to believe his conduct was unlawful. The termination of any action or
proceeding by judgment, order, settlement or conviction, or upon a plea of nolo
contendere or its equivalent shall not of itself create a presumption that such
person did not act in good faith and in a manner which he reasonably believed to
be in, or not opposed to, the best interests of the corporation and, with
respect to any criminal proceeding, had reasonable cause to believe that his
conduct was unlawful.
 
Section 1742 of the Pennsylvania BCL provides that a corporation shall (subject
to the provisions described in the succeeding paragraph) have the power to
indemnify any person who was or is a party, or is threatened to be made a party,
to any threatened, pending or completed action by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that such
person is or was a representative of the corporation, or is or was serving at
the request of the corporation as a representative of another domestic or
foreign corporation for profit or not-for-profit, partnership, joint venture,
trust or other enterprise, against expenses (including attorneys' fees) actually
and reasonably incurred by such person in connection with the defense of the
settlement of the action if such person acted in good faith and in a manner he
reasonably believed to be in, or not opposed to, the best interests of the
corporation. Indemnification shall not be made in respect of any claim, issue or
matter as to which such person has been adjudged to be liable to the corporation
unless and only to the extent that the court of common pleas of the county in
which the registered office of the corporation is located or the court in which
the action was brought determines upon application that, despite the
adjudication of liability but in view of all the circumstances of the case, such
person is fairly and reasonably entitled to indemnity for such expenses that the
court of common pleas or other court deems proper.
 
Under Section 1744 of the Pennsylvania BCL, any such indemnification (unless
ordered by a court) shall be made by the corporation only as authorized in a
specific case upon a determination that indemnification of the representative is
proper in the circumstances because such person has met the applicable standard
of conduct. Such determination shall be made:
 
        (1) By the Board of Directors by a majority vote of a quorum consisting
     of directors who were not parties to the action or proceeding; or
 
        (2) If such quorum is not obtainable or, even if obtainable, a majority
     vote of a quorum of disinterested directors so directs, by independent
     legal counsel in a written opinion; or
 
        (3) By the shareholders.
 
                                      II-2
<PAGE>   20
 
Notwithstanding the above, Section 1743 provides that to the extent that a
representative of the corporation has been successful on the merits or otherwise
in defense of any action or proceeding referred to above, or in defense of any
claim, issue or matter therein, such person shall be indemnified against
expenses (including attorneys' fees) actually and reasonably incurred by such
person in connection therewith.
 
Under Section 1745 of the Pennsylvania BCL, expenses (including attorneys' fees)
incurred in defending any action or proceeding may be paid by the corporation in
advance of the final disposition of the action or proceeding upon receipt of an
undertaking by or on behalf of the representative to repay such amount if it is
ultimately determined that such person is not entitled to be indemnified by the
corporation.
 
Section 1746 of the Pennsylvania BCL further provides that the indemnification
provided by Sections 1741, 1742 and 1743 and the advancement of expenses
provided by Section 1745 shall not be deemed exclusive of any other rights to
which a person seeking indemnification or advancement of expenses may be
entitled under any bylaw, agreement, vote of shareholders, disinterested
directors or otherwise, both as to action in his official capacity and as to
action in other capacity while holding that office. A corporation may create a
fund of any nature, which may, but need not be, under the control of a trustee,
or otherwise secure or insure in any manner its indemnification obligations,
whether arising under or pursuant to Section 1746 or otherwise. Indemnification
pursuant to Section 1746 shall not be made in any case where the act or failure
to act giving rise to the claim for indemnification is determined by a court to
have constituted willful misconduct or recklessness.
 
Indemnification pursuant to Section 1746 under any bylaw, agreement, vote of
shareholders, or directors or otherwise may be granted for any action taken or
any failure to take any action and may be made whether or not the corporation
would have the power to indemnify the person under any other provision of law
except as provided in such Section 1746 and whether or not the indemnified
liability arises or arose from any threatened, pending or completed action by or
in the right of the corporation. Section 1746 declares such indemnification to
be consistent with the public policy of Pennsylvania.
 
The foregoing is only a general summary of certain aspects of Pennsylvania law
dealing with indemnification of directors and officers and does not purport to
be complete. It is qualified in its entirety by reference to the relevant
statutes which contain detailed specific provisions regarding the circumstances
under which the person for whose benefit indemnification shall or may be made
and accordingly are incorporated herein by reference as Exhibit 99.2 of this
registration statement.
 
ITEM 16.  EXHIBITS
 
The following exhibits are filed as part of this Registration Statement:
 
<TABLE>
<CAPTION>
EXHIBIT NO.
- -----------
<C>           <S>
    4.1       Specimen of the Registrant's Subordinated Term Notes due 3,
              6, 9, 12, 18, 24, 30, 36, 48, 60, 84 and 120 Months
    4.2       Specimen of the Registrant's Subordinated Daily Notes
    4.3       Form of Indenture authorizing the Registrant's Securities
              issued pursuant to this Registration Statement to be
              qualified under the Trust Indenture Act, incorporated by
              reference to Exhibit 4.7 of the Registrant's Registration
              Statement on Form S-2, File No. 33-45888.
    4.4       First Supplemental Indenture dated as of January 1, 1994
              between the Registrant and the Trustee, incorporated by
              reference to Exhibit 4.4 of the Registrant's Registration
              Statement on Form S-3, File No. 33-61367.
</TABLE>
 
                                      II-3
<PAGE>   21
 
<TABLE>
<CAPTION>
EXHIBIT NO.
- -----------
<C>           <S>
    4.5       Form of Officer's Certificate setting forth the terms of (i)
              the Registrant's Subordinated Notes due 3, 6, 9, 12, 18, 24,
              30, 36, 48, 60, 84 and 120 Months, and (ii) the Registrant's
              Subordinated Daily Cash Accounts, incorporated by reference
              to Exhibit 4.5 of the Registrant's Registration Statement on
              Form S-3, File No. 33-67440.
    4.6       Form of Acceptance of Offer
      5       Opinion of Cohen & Grigsby, P.C. re: legality*
     12       Statement re: computation of ratios
   23.1       Consent of Cohen & Grigsby, P.C. (included in Exhibit 5)
   23.2       Consent of Ernst & Young LLP
   23.3       Consent of Hill, Barth & King, Inc.
   23.4       Consent of PricewaterhouseCoopers, LLP
   23.5       Consent of Hacker, Johnson, Cohen & Grieb, PA
     24       Powers of Attorney
     25       Statement of Eligibility of Trustee*
   99.1       Form of Prospectus Supplement
   99.2       Provisions of Pennsylvania law regarding indemnification of
              directors and officers, incorporated by reference to Exhibit
              99.3 of the Registrant's Registration Statement on Form S-4,
              File No. 333-22909.
</TABLE>
 
* To be Filed by Amendment.
 
ITEM 17.  UNDERTAKINGS
 
The undersigned registrant hereby undertakes:
 
        (1) To file, during any period in which offers or sales are being made,
     a post-effective amendment to this registration statement:
 
        (i)  To include any prospectus required by Section 10(a)(3) of the
             Securities Act of 1933;
 
        (ii)  To reflect in the prospectus any facts or events arising after the
              effective date of the registration statement (or the most recent
              post-effective amendment thereof) which, individually or in the
              aggregate, represent a fundamental change in the information set
              forth in the registration statement;
 
        (iii) To include any material information with respect to the plan of
              distribution not previously disclosed in the registration
              statement or any material change to such information in the
              registration statement.
 
        (2) That, for the purposes of determining any liability under the
     Securities Act of 1933, each such post-effective amendment 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.
 
        (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
The undersigned registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the registrant's
annual report pursuant to Section 13(a) or Section 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is
 
                                      II-4
<PAGE>   22
 
incorporated by reference in the registration statement 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.
 
Insofar as indemnification for liabilities arising under the Securities Act of
1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore unenforceable. In the event that a claim for indemnification against
liabilities (other than the payment by the registrant of expenses incurred or
paid by a director, officer or controlling person of the registrant 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, the registrant 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 Act and will be governed by the final
adjudication of such issue.
 
                                      II-5
<PAGE>   23
 
                                   SIGNATURES
 
Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all the
requirements for filing on Form S-3 and duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly authorized, in the
City of Hermitage, Commonwealth of Pennsylvania, on March 10, 1999.
 
                                      F.N.B. CORPORATION
 
                                      By           /s/ PETER MORTENSEN
 
                                         ---------------------------------------
                                         Peter Mortensen,
                                         Chairman of the Board and Chief
                                         Executive Officer
 
Pursuant to the requirements of Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities and on the
dates indicated.
 
<TABLE>
<CAPTION>
                   SIGNATURE                                   TITLE                     DATE
                   ---------                                   -----                     ----
<C>                                               <S>                              <C>
 
              /s/ PETER MORTENSEN                 Chairman of the Board and        March 10, 1999
- ------------------------------------------------  Chief Executive Officer
                Peter Mortensen                   (Principal Executive Officer)
 
                /s/ GARY L. TICE                  President, Chief Operating       March 10, 1999
- ------------------------------------------------  Officer and Director
                  Gary L. Tice
 
            /s/ STEPHEN J. GURGOVITS              Vice Chairman                    March 19, 1999
- ------------------------------------------------
              Stephen J. Gurgovits
 
               /s/ JOHN D. WATERS                 Vice President and Chief         March 19, 1999
- ------------------------------------------------  Financial Officer (Principal
                 John D. Waters                   Financial and Accounting
                                                  Officer)
 
            /s/ W. RICHARD BLACKWOOD              Director                         March 17, 1999
- ------------------------------------------------
              W. Richard Blackwood
 
              /s/ ALAN C. BOMSTEIN                Director                         March 19, 1999
- ------------------------------------------------
                Alan C. Bomstein
 
            /s/ WILLIAM B. CAMPBELL               Director                         March 19, 1999
- ------------------------------------------------
              William B. Campbell
 
             /s/ CHARLES T. CRICKS                Director                         March 19, 1999
- ------------------------------------------------
               Charles T. Cricks
 
            /s/ HENRY M. EKKER, ESQ               Director                         March 19, 1999
- ------------------------------------------------
              Henry M. Ekker, Esq
 
              /s/ THOMAS W. HODGE                 Director                         March 19, 1999
- ------------------------------------------------
                Thomas W. Hodge
</TABLE>
 
                                      II-6
<PAGE>   24
 
<TABLE>
<CAPTION>
                   SIGNATURE                                   TITLE                     DATE
                   ---------                                   -----                     ----
<C>                                               <S>                              <C>
              /s/ JAMES S. LINDSAY                Director                         March 19, 1999
- ------------------------------------------------
                James S. Lindsay
 
               /s/ PAUL P. LYNCH                  Director                         March 19, 1999
- ------------------------------------------------
                 Paul P. Lynch
 
               /s/ EDWARD J. MACE                 Director                         March 10, 1999
- ------------------------------------------------
                 Edward J. Mace
 
               /s/ ROBERT S. MOSS                 Director                         March 10, 1999
- ------------------------------------------------
                 Robert S. Moss
 
              /s/ RICHARD C. MYERS                Director                         March 19, 1999
- ------------------------------------------------
                Richard C. Myers
 
                                                  Director                         , 1999
- ------------------------------------------------
                William A. Quinn
 
              /s/ GEORGE A. SEEDS                 Director                         March 10, 1999
- ------------------------------------------------
                George A. Seeds
 
             /s/ WILLIAM J. STRIMBU               Director                         March 10, 1999
- ------------------------------------------------
               William J. Strimbu
 
             /s/ ARCHIE O. WALLACE                Director                         March 19, 1999
- ------------------------------------------------
               Archie O. Wallace
 
              /s/ JOSEPH M. WALTON                Director                         March 10, 1999
- ------------------------------------------------
                Joseph M. Walton
 
              /s/ JAMES T. WELLER                 Director                         March 19, 1999
- ------------------------------------------------
                James T. Weller
 
            /s/ ERIC J. WERNER, ESQ.              Director                         March 19, 1999
- ------------------------------------------------
              Eric J. Werner, Esq.
 
             /s/ R. BENJAMIN WILEY                Director                         March 12, 1999
- ------------------------------------------------
               R. Benjamin Wiley
 
                                                  Director                         , 1999
- ------------------------------------------------
                Donna C. Winner
</TABLE>
 
                                      II-7
<PAGE>   25
 
                                 EXHIBIT INDEX
 
                  (PURSUANT TO ITEM 601(a) OF REGULATION S-K)
 
<TABLE>
<CAPTION>
                                                                              SEQUENTIAL
EXHIBIT NO.                           DESCRIPTION                              PAGE NO.
- -----------                           -----------                             ----------
<C>           <S>                                                             <C>
    4.1       Specimen of the Registrant's Subordinated Term Notes due 3,
              6, 9, 12, 18, 24, 30, 36, 48, 60, 84 and 120 Months
    4.2       Specimen of the Registrant's Subordinated Daily Notes
    4.3       Form of Indenture authorizing the Registrant's Securities
              issued pursuant to this Registration Statement to be
              qualified under the Trust Indenture Act, incorporated by
              reference to Exhibit 4.7 of the Registrant's Registration
              Statement on Form S-2, File No. 33-45888.
    4.4       First Supplemental Indenture dated as of January 1, 1994
              between the Registrant and the Trustee, incorporated by
              reference to Exhibit 4.4 of the Registrant's Registration
              Statement on Form S-3, File No. 33-61367.
    4.5       Form of Officer's Certificate setting forth the terms of (i)
              the Registrant's Subordinated Notes due 3, 6, 9, 12, 18, 24,
              30, 36, 48, 60, 84 and 120 Months, and (ii) the Registrant's
              Subordinated Daily Cash Accounts, incorporated by reference
              to Exhibit 4.5 of the Registrant's Registration Statement on
              Form S-3, File No. 33-67440.
    4.6       Form of Acceptance of Offer
      5       Opinion of Cohen & Grigsby, P.C. re: legality*
     12       Statement re: computation of ratios
   23.1       Consent of Cohen & Grigsby, P.C. (included in Exhibit 5)
   23.2       Consent of Ernst & Young LLP
   23.3       Consent of Hill, Barth & King, Inc.
   23.4       Consent of PricewaterhouseCoopers, LLP
   23.5       Consent of Hacker, Johnson, Cohen & Grieb, PA
     24       Powers of Attorney
     25       Statement of Eligibility of Trustee*
   99.1       Form of Prospectus Supplement
   99.2       Provisions of Pennsylvania law regarding indemnification of
              directors and officers, incorporated by reference to Exhibit
              99.3 of the Registrant's Registration Statement on Form S-4,
              File No. 333-22909.
</TABLE>
 
* To be Filed by Amendment.

<PAGE>   1
                                                                     EXHIBIT 4.1

                                   ____ MONTH

                             SUBORDINATED TERM NOTE

                               F.N.B. CORPORATION
                                HERMITAGE SQUARE
                          HERMITAGE, PENNSYLVANIA 16148

         Date of Issue _____________________, 19__      No.____________________

         FOR VALUE RECEIVED, F.N.B. Corporation (the "Issuer") hereby promises
to pay the principal amount of
__________________________________________________________________ Dollars 
($__________________________) _________________ calendar months after the date 
of issue to

<TABLE>
<S>        <C>                            <C>                             <C>
Name      
           --------------------------     --------------------------       -------------------------

           --------------------------        Soc. Sec. or E.I. No.         Stated Maturity

Address
           --------------------------     --------------------------       -------------------------

           --------------------------
</TABLE>



(the "Holder"), in the manner provided for on the reverse side hereof. This
Subordinated Term Note shall bear interest on the unpaid principal amount from
the date of issue until paid at the rate of __________________________________
percent (___%) per annum, such interest to be payable as set forth below.

                  Upon, and during the continuance of any Event of Default,
then, and in any such event, the principal of the Securities of this series may
be declared immediately due and payable in the manner and with the effect
provided in the Indenture.

                  By acceptance of this Subordinated Term Note, the Holder
agrees that its rights and remedies against the Issuer with respect to its
obligations hereon shall be and remain subordinate to the extent and in the
manner set forth on the reverse side hereof. This Subordinated Term Note is
subject to redemption prior to maturity. Interest adjustment and certain other
terms are set forth on the reverse side hereof.

         Unless the Certificate of Authentication hereon has been executed by
the Trustee referred to on the reverse side hereof, either directly or through
an Authenticating Agent, by the manual or facsimile signature of an authorized
signer, this Subordinated Term Note shall not be entitled to any benefit under
the Indenture or be valid or obligatory for any purpose.

<TABLE>
<S>                                     <C>                                     <C>
                                                                                AUTHENTICATION  CERTIFICATE: This Subordinated Term
                                                                                Note is one of the Securities of the series
   Terms 3 or 6-Month                    Terms 9 thru 120-Month                 designated herein referred to in the within-
   ------------------                    ----------------------                 mentioned Indenture.
                                                                                
- ------------------------------------  ----------------------------------------
Interest at the above rate will be    Interest at the above rate will be 

_____    Paid Monthly                 _____    Paid Monthly                     CHASE MANHATTAN TRUST COMPANY, NATIONAL ASSOCIATION,
                                                                                as Trustee 
                                      _____    Paid Quarterly                   By:  Authenticating Agent
_____    Paid At Maturity                                          
                                      _____    Compounded Quarterly
- ------------------------------------
                                      ----------------------------------------  ---------------------------------------------------
                                                                                                  Authorized Signature
</TABLE>


THIS SECURITY IS NOT A SAVINGS ACCOUNT OR AN OBLIGATION OF AN INSURED DEPOSITORY
INSTITUTION AND IS NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION
(FDIC).

<TABLE>
<CAPTION>
ATTEST:   F.N.B. CORPORATION

<S>                                       <C>                                                 <C>
By:                                        By:                                                [SEAL]
   --------------------------------------     ----------------------------------------
            Secretary                            Chairman & Chief Executive Officer
</TABLE>



<PAGE>   2


                                [Reverse of Note]

         This Subordinated Term Note is one of a duly authorized issue of
securities of the Issuer (each a "Security" and, together, the "Securities"),
issued and to be issued in one or more series under an Indenture, dated as of
May 15, 1992 (herein called the "Indenture"), between the Issuer and Chase
Manhattan Trust Company, N.A., as successor to Northern Central Bank, as trustee
(herein called the "Trustee", which term includes any successor Trustee under
the Indenture), to which Indenture and all indentures supplemental thereto
reference is hereby made for a statement of the respective rights, limitations,
duties and immunities thereunder of the Issuer, the Trustee and the Holders of
the Securities, and of the terms upon which the Securities are, and are to be,
authenticated and delivered.

         PAYMENT AND INTEREST ACCRUAL. Payment of the principal of and interest
on this Security shall be made in lawful money of the United States at any
office of Regency Finance Company, the Issuer's agent, or at such other place as
the Issuer may designate to the Holder in writing ("Place of Payment");
provided, however, that any such payment may be made, at the option of the
Issuer, by check mailed to the registered address of the Holder. Upon payment or
tender of payment hereof at maturity or earlier redemption (in whole), this
Security shall be surrendered to the Issuer for cancellation at the Place of
Payment. Unless otherwise agreed in writing by the Issuer, interest hereon shall
cease to accrue, and the Issuer shall have no further liability with respect
thereto, upon payment (or tender of payment in the aforesaid manner) of the
principal amount hereof at maturity or earlier redemption.

         This Security will be automatically extended for successive terms,
equal in duration to the original term hereof, at the rate(s) of interest then
in effect for Securities of comparable maturity unless, prior to maturity, the
Issuer receives notification of the Holder's intent to redeem the Security. All
of the terms and conditions applicable to the Security when issued will also
apply during each period of extension.

         OPTIONAL REDEMPTION BY ISSUER. The Securities of this series are
subject to redemption upon not less than 30 days' notice by first class mail, at
any time, as a whole or in part, at the election of the Issuer, without premium,
together with accrued interest to the Redemption Date, but any interest
installment, which is due and payable on or prior to such Redemption Date, will
be payable to the Holders of such Securities, or one or more Predecessor
Securities, of record at the close of business on the relevant Record Dates, all
as provided in the Indenture. Each partial redemption payment shall be made
ratably on all the Outstanding Securities of such series called for redemption.

         REDEMPTION PRIOR TO MATURITY BY HOLDER. The Holder shall have the right
at its option to redeem this Security in whole or in part at any time prior to
maturity. Upon such redemption, the Holder shall forfeit an amount equal to (i)
1 month of interest earned, or that could have been earned (if this Security has
a term of 3 to 12 months) or (ii) 3 months of interest earned, or that could
have been earned (if this Security has a term of 18 to 120 months), on the
amount so redeemed at the rate being paid on this Security, regardless of the
length of time that this Security has been Outstanding. Where necessary to
comply with the requirements of this paragraph, any interest already paid to or
for the account of the Holder shall be deducted from the amount redeemed.
Holders shall also have the right to make partial redemptions prior to maturity;
provided, however, that a minimum outstanding principal amount of $500 is
maintained. The above-mentioned forfeitures shall be calculated only upon the
amount so redeemed. This Security may be redeemed before maturity without
forfeiture upon the death of the Holder of this Security or when the Holder of
this Security is determined to be legally incompetent by a court or other
administrative body of competent jurisdiction. The Issuer retains the absolute
right to require the Holder to give the Issuer no less than 30 days' prior
written notice by U.S. registered mail of a redemption demanded by the Holder,
which notice shall specify the principal amount of the Security to be redeemed
and the redemption date.

         In the event of redemption of this Security in part only, a new
Security or Securities of this series for the unredeemed portion hereof will be
issued in the name of the Holder hereof upon the cancellation hereof.

         ASSIGNMENT. As provided in the Indenture and subject to certain
limitations therein set forth, this Security shall not be transferable except by
endorsement and delivery by the Holder, or his duly authorized representative at
the Place of Payment referred to above and, upon surrender to the Issuer with
proper endorsement, a new instrument of like tenor shall be issued in the name
of the transferee. No service charge shall be made for any such registration of
transfer or exchange, but the Issuer may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.
Unless and until transferred in the manner aforesaid, the Issuer, the Trustee
and any agent of either of them may treat the Holder whose name or names appear
on the face of this instrument as the absolute owner hereof for all purposes. If
this Security is payable to two or more persons, they shall be deemed to be
joint tenants with right of survivorship and any and all payments herein shall
be made to either, or the survivor of them.

         SUBORDINATION. The indebtedness evidenced by this Security is
subordinate to the prior payment when due of the principal of and interest on
all Senior Indebtedness (as such term is defined below). Upon maturity of any
Senior Indebtedness, payment in full must be made on such Senior Indebtedness
before any payment is made on or in respect of this Security. During the
continuance of any default in payment of principal of (or premium, if any) or
interest or sinking fund on any Senior Indebtedness, or any other event of
default with respect to Senior Indebtedness pursuant to which the holders
thereof have accelerated the maturity thereof, no direct or indirect payment may
be made or agreed to be made by the Issuer on or in respect of this Security.
Upon any distribution of assets of the Issuer in any dissolution, winding up,
liquidation or reorganization, payment of the principal of and interest on this
Security will be subordinated, to the extent and in the manner set forth in the
Indenture, to the prior payment in full of all Senior Indebtedness. The
Indenture does not limit the Issuer's ability to increase the amount of Senior
Indebtedness or to incur any additional indebtedness in the future that may
affect the Issuer's ability to make payments under this Security. Except as
described above, the obligation of the Issuer to make payment of principal or
interest on this Security will not be affected. The Holder of this Security will
be subrogated to the rights of the holders of the Senior Indebtedness to the
extent of payments made on Senior Indebtedness out of the distributive share of
the Security. By reason of such subordination, in the event of a distribution of
assets upon insolvency, certain general creditors of the Issuer may recover
more, ratably, than Holders of the Securities.

         "Senior Indebtedness" means Indebtedness of the Issuer outstanding at
any time, other than Indebtedness of the Issuer to a Subsidiary for money
borrowed or advanced from any such Subsidiary, except Indebtedness which by its
terms is not superior in right of payment to the Securities. "Indebtedness"
means (1) any debt of the Issuer (i) for borrowed money or (ii) evidenced by a
note, debenture or similar instrument (including a purchase money obligation)
given in connection with the acquisition of any property or assets, including
securities; (2) any debt of others described in the preceding clause (1) which
the Issuer has guaranteed or for which it is otherwise liable; and (3) any
amendment, renewal, extension or refunding of any such debt.

         In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any other provision of the Indenture or of this Security)
payment of principal and interest need not be made at such Place of Payment on
such date, but may be made on the next succeeding Business Day at such Place of
Payment with the same force and effect as if made on the Interest Payment Date
or Redemption Date, or at the Stated Maturity, provided that no interest shall
accrue for the period from and after such Interest Payment Date, Redemption Date
or Stated Maturity, as the case may be.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Issuer and the Trustee with the
consent of the Holders of not less than 50% in principal amount of the
Securities at the time Outstanding of each series to be affected. The Indenture
also contains provisions permitting the Holders of specified percentages in
aggregate principal amount of the Securities of each series at the time
Outstanding, on behalf of the Holders of all Securities of such series, to waive
compliance by the Issuer with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder of this Security shall be conclusive and binding upon such
Holder and upon all future Holders of this Security and of any Security issued
upon the registration of transfer hereof or in exchange hereof or in lieu
hereof, whether or not notation of such consent or waiver is made upon this
Security.

         The Securities of this series are issuable only in registered form
without coupons in any denomination; provided, however, that the minimum
denomination shall be $500.

         All terms used in this Security which are defined in the Indenture and
not otherwise defined herein shall have the meanings assigned to them in the
Indenture.


<PAGE>   1
                                                                     EXHIBIT 4.2







                               F.N.B. CORPORATION




                                  SUBORDINATED
                                   DAILY NOTE





<PAGE>   2

















This Daily Note Register is provided for the convenience of the Purchaser.
Entries may be made only by an authorized agent of the Company to reflect
additional purchases or redemptions. The Company will not be liable for any
transaction unless an entry is made herein by an authorized agent of the
Company. The Purchaser will receive statements on a quarterly basis which will
include all transactions for the period.





<PAGE>   3



                             SUBORDINATED DAILY NOTE

                               F.N.B. CORPORATION
                                HERMITAGE SQUARE
                          HERMITAGE, PENNSYLVANIA 16148

                 Date of Issue ________________________, 19_____

                          No. _________________________


    FOR VALUE RECEIVED, F.N.B. CORPORATION (THE "ISSUER") HEREBY PROMISES TO
         PAY ON DEMAND THE PRINCIPAL AMOUNT AS RECORDED IN THE REGISTER
       TOGETHER WITH ACCRUED INTEREST SUBJECT TO THE PROVISIONS SET FORTH
                                   HEREIN, to




Name                                                                  
        -------------------------------------------------------------

        -------------------------------------------------------------


Address    
        -------------------------------------------------------------

        -------------------------------------------------------------


Soc. Sec. or E.I. No.                                                 
                      ------------------------------------------------


(the "Holder"), in the manner provided for herein.


<PAGE>   4


This Subordinated Daily Note shall bear interest on the unpaid principal amount
at the initial rate of _____________________________________%. This rate may
fluctuate as described herein. Interest shall accrue daily and be compounded
quarterly.

By acceptance of this Subordinated Daily Note, the Holder agrees that its rights
and remedies against the Issuer with respect to its obligations hereon shall be
and remain subordinate to the extent and in the manner set forth herein.

Unless the Certificate of Authentication hereon has been executed by the Trustee
referred to herein, either directly or through an Authenticating Agent, by the
manual or facsimile signature of an authorized signer, this Subordinated Daily
Note shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.



F.N.B. CORPORATION                        By  
                                             -----------------------------------
                                             Chairman & Chief Executive Officer


        [SEAL]                            By                                 
                                             -----------------------------------
                                                         Secretary


THIS SUBORDINATED DAILY NOTE IS SUBJECT TO REDEMPTION PRIOR TO MATURITY.
INTEREST ADJUSTMENT AND CERTAIN OTHER TERMS ARE SET FORTH HEREIN.

THIS SECURITY IS NOT A SAVINGS ACCOUNT OR AN OBLIGATION OF AN INSURED DEPOSITORY
INSTITUTION AND IS NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION
(FDIC).


AUTHENTICATION CERTIFICATE:

                  This Subordinated Daily Note is one of the Securities of the
series designated herein referred to in the within-mentioned Indenture.


CHASE MANHATTAN TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee

By:  Authenticating Agent


                                             -----------------------------------
                                                      Authorized Signature


<PAGE>   5



This Subordinated Daily Note is one of a duly authorized issue of securities of
the Issuer (each a "Security" and, together, the "Securities"), issued and to be
issued in one or more series under an Indenture, dated as of May 15, 1992
(herein called the "Indenture"), between the Issuer and Chase Manhattan Trust
Company, N.A., as successor to Northern Central Bank, as trustee (herein called
the "Trustee", which term includes any successor Trustee under the Indenture),
to which Indenture and all indentures supplemental thereto reference is hereby
made for a statement of the respective rights, limitations, duties and
immunities thereunder of the Issuer, the Trustee and the Holders of the
Securities, and of the terms upon which the Securities are, and are to be,
authenticated and delivered.

Upon and during the continuance of an Event of Default, then, and in any such
event, the principal of the Securities of this series may be declared
immediately due and payable in the manner and with the effect provided in the
Indenture.

                  PAYMENT AND INTEREST ACCRUAL. Payment of the principal of and
interest on this Security shall be made in lawful money of the United States at
any office of Regency Finance Company, the Issuer's agent, or at such other
place as the Issuer may designate to the Holder in writing (a "Place of
Payment"); provided, however, that any such payment may be made, at the option
of the Issuer, by check mailed to the registered address of the Holder. Upon
payment or tender of payment hereof ON DEMAND, this Security shall be
surrendered to the Issuer for cancellation at the Place of Payment. Unless
otherwise agreed in writing by the Issuer, interest hereon shall cease to
accrue, and the Issuer shall have no further liability with respect thereto,
upon payment (or tender of payment in the aforesaid manner) of the principal
amount hereof ON DEMAND.

                  INTEREST RATE ADJUSTMENT. The interest rate will be determined
by the Company and may fluctuate on a monthly basis. Any adjustment to the
interest rate will be made on the first day of the month and shall remain in
effect until next adjusted by the Company.

                  OPTIONAL REDEMPTION BY ISSUER. The Securities of this series
are subject to redemption upon not less than 30 days' notice by first class
mail, at any time, as a whole or in part, at the election of the Issuer, without
premium, together with accrued interest to the Redemption Date, but any interest
installment, which is due and payable on or prior to such Redemption Date, will
be payable to the Holders of such Securities, or one or more Predecessor
Securities, of record at the close of business on the relevant Record Dates, all
as provided in the Indenture. Each partial redemption payment shall be made
ratably on all the Outstanding Securities of such series called for redemption.

                  REDEMPTION BY HOLDER. The Holder shall have the right at its
option to redeem this Security, in whole or in part, at any time. Holders shall
also have the right to make partial redemptions; provided, however, that a
minimum outstanding principal amount of $50 is maintained. The Issuer retains
the absolute right to require the Holder to give the Issuer no less than 30 days
prior written notice by U.S. registered mail of a redemption demanded by the


<PAGE>   6


Holder and which notice shall specify the principal amount of the Security to be
redeemed and the redemption date.

                  Upon presentation of this Security at a Place of Payment, the
Issuer, or the Issuer's agent, will, for the Holder's convenience, record on the
register attached hereto and made a part hereof any adjustments to the original
principal amount of this Security, such as additional purchases or partial
redemptions.

                  ASSIGNMENT. As provided in the Indenture and subject to
certain limitations therein set forth, this Security shall not be transferable
except by endorsement and delivery by the Holder, or his duly authorized
representative at the Place of Payment referred to above, and upon surrender to
the Issuer with proper endorsement, a new instrument of like tenor shall be
issued in the name of the transferee. No service charge shall be made for any
such registration of transfer or exchange, but the Issuer may require payment of
a sum sufficient to cover any tax or other governmental charge payable in
connection therewith. Unless and until transferred in the manner aforesaid, the
Issuer, the Trustee and any agent of either of them may treat the Holder whose
name or names appear on the face of this instrument as the absolute owner hereof
for all purposes. If this Security is payable to two or more persons, they shall
be deemed to be joint tenants with right of survivorship and any and all
payments herein shall be made to either, or the survivor of them.

         SUBORDINATION. The indebtedness evidenced by this Security is
subordinate to the prior payment when due of the principal of and interest on
all Senior Indebtedness (as such term is defined below). Upon maturity of any
Senior Indebtedness, payment in full must be made on such Senior Indebtedness
before any payment is made on or in respect of this Security. During the
continuance of any default in payment of principal of (or premium, if any) or
interest or sinking fund on any Senior Indebtedness, or any other event of
default with respect to Senior Indebtedness pursuant to which the holders
thereof have accelerated the maturity thereof, no direct or indirect payment may
be made or agreed to be made by the Issuer on or in respect of this Security.
Upon any distribution of assets of the Issuer in any dissolution, winding up,
liquidation or reorganization, payment of the principal of and interest on this
Security will be subordinated, to the extent and in the manner set forth in the
Indenture, to the prior payment in full of all Senior Indebtedness. The
Indenture does not limit the Issuer's ability to increase the amount of Senior
Indebtedness or to incur any additional indebtedness in the future that may
affect the Issuer's ability to make payments under this Security. Except as
described above, the obligation of the Issuer to make payment of principal or
interest on this Security will not be affected. The Holder of this Security will
be subrogated to the rights of the holders of the Senior Indebtedness to the
extent of payments made on Senior Indebtedness out of the distributive share of
the Security. By reason of such subordination, in the event of a distribution of
assets upon insolvency, certain general creditors of the Issuer may recover
more, ratably, than Holders of the Securities.

         "Senior Indebtedness" means Indebtedness of the Issuer outstanding at
any time, other than Indebtedness of the Issuer to a Subsidiary for money
borrowed or advanced from any such Subsidiary, except Indebtedness which by its
terms is not superior in right of payment to the Securities. "Indebtedness"
means (1) any debt of the Issuer (i) for borrowed money or (ii) 


<PAGE>   7


evidenced by a note, debenture or similar instrument (including a purchase money
obligation) given in connection with the acquisition of any property or assets,
including securities; (2) any debt of others described in the preceding clause
(1) which the Issuer has guaranteed or for which it is otherwise liable; and (3)
any amendment, renewal, extension or refunding of any such debt.

                  In any case where any Redemption Date of any Security shall
not be a Business Day at any Place of Payment, then (notwithstanding any other
provision of the Indenture or of this Security) payment of principal and
interest need not be made at such Place of Payment on such date, but may be made
on the next succeeding Business Day at such Place of Payment with the same force
and effect as if made on the Redemption Date; provided, that no interest shall
accrue for the period from and after such Redemption Date.

                  The Indenture permits, with certain exceptions as therein
provided, the amendment thereof and the modification of the rights and
obligations of the Issuer and the rights of the Holders of the Securities of
each series to be affected under the Indenture at any time by the Issuer and the
Trustee with the consent of the Holders of not less than 50% in principal amount
of the Securities at the time Outstanding of each series to be affected. The
Indenture also contains provisions permitting the Holders of specified
percentages in aggregate principal amount of the Securities of each series at
the time Outstanding, on behalf of the Holders of all Securities of such series,
to waive compliance by the Issuer with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any
Security issued upon the registration of transfer hereof or in exchange hereof
or in lieu hereof, whether or not notation of such consent or waiver is made
upon this Security.

                  The Securities of this series are issuable only in registered
form without coupons in any denomination; provided, however, that the minimum
denomination shall be $50.

                  All terms used in this Security which are defined in the
Indenture and not otherwise defined herein shall have the meanings assigned to
them in the Indenture.



<PAGE>   8


<TABLE>
<CAPTION>
=================================== ================================ ================================= =============================
           TRANSACTION                        REC'D/PAID
              DATE                                BY                           REDEMPTIONS                      PURCHASES
=================================== ================================ ================================= ============================

<S>                                 <C>                              <C>                               <C>
INITIAL PURCHASE/PRIOR REGISTER BALANCE

- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
- ----------------------------------- -------------------------------- --------------------------------- -----------------------------
                                                                     
=================================== ================================ ================================= =============================
</TABLE>




<PAGE>   1
                                                                     EXHIBIT 4.6

                                                 Account No. ___________________

                               ACCEPTANCE OF OFFER

                  The undersigned hereby agrees to purchase, at par,
$________________ in aggregate principal amount of the following securities (the
"Securities") of F.N.B. Corporation (the "Company") offered pursuant to the
Prospectus dated _________________, (as the same may be amended, modified or
supplemented, the "Prospectus"), receipt of which is hereby acknowledged:

<TABLE>
<S>               <C>
                  Security:______________________________________________________________________________
                           Subordinated Term Note ("Term Note") or Subordinated Daily Note ("Daily Note")

                  Term:    ______________________________________________________________________________
                           For Term Notes only; 3,6,9,12,18,24,30,36,48,60,84 or 120 months

                  Interest Rate:_________________________________________________________________________
                           Fixed for Term Notes; Initial for Daily Note

                  Registration Code:___________________________        Account Type: ____________________
                           IN;JT;UTMA                                  P;B;O
</TABLE>

The name(s) and address in which the Securities being purchased by the
undersigned are to be registered are as follows (all persons so named must
execute this Acceptance of Offer):

<TABLE>
<S>                                                               <C>
____________________________________________________

____________________________________________________              Soc. Sec. or E.I. No.

____________________________________________________              # ______________________________________

____________________________________________________              Telephone Number _______________________
</TABLE>

EACH UNDERSIGNED HEREBY REPRESENTS AND WARRANTS THAT He/she has received a copy
of the Prospectus.

EACH UNDERSIGNED HEREBY AGREES THAT All Securities purchased hereby, whether
Term Notes or Daily Notes, are subject to all the terms and conditions
including, without limitation, subordination of the indebtedness evidenced
thereby, as set forth in the Prospectus and the Indenture dated as of May 15,
1992 between the Company and Chase Manhattan Trust Company, N.A., as successor
to Northern Central Bank, as Trustee.

- -------------------------------------------------------------------------------
THIS SECURITY IS NOT A SAVINGS ACCOUNT OR AN OBLIGATION OF AN INSURED DEPOSITORY
INSTITUTION AND IS NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION
(FDIC).
- -------------------------------------------------------------------------------

By executing this ACCEPTANCE OF OFFER, I (we), under penalty of perjury, certify
that: (1) the number shown on this form is my (our) correct taxpayer
identification number (T.I.N.) and (2) I (we) am (are) not subject to backup
withholding either because of (a) I (we) am (are) exempt from backup
withholding, or (b) I (we) have not been notified by the Internal Revenue
Service that I (we) am (are) subject to backup withholding as a result of a
failure to report all interest or dividends, or (c) the IRS has notified me (us)
that I (we) am (are) no longer subject to backup withholding. (If you have been
notified by the IRS that you are subject to backup withholding, delete the
language in (2) above.)

<TABLE>
<CAPTION>
TERM NOTE INTEREST ELECTION (CHECK ONE)

<S>                                <C>                                  <C>
1.   MONTHLY CHECK                  ____(3-120 MO.)                     ________________________________________________________

2.   QUARTERLY CHECK                ____(9-120 MO.)                     ________________________________________________________

3.   COMPOUND QUARTERLY             ____(9-120 MO.)                     ________________________________________________________
                                                                        (This Purchase Agreement must be executed by all persons
4.   PAID AT MATURITY               ____(3-6 MO.)                       whose names are to appear on the Securities purchased
                                                                        hereby.)
5.   MONTHLY DEPOSIT
                                                                        Date:___________________________________________________
     TO DAILY NOTE                  ____(3-120 MO.)
                                                                        Opened By:______________________________________________
     DAILY NOTE NUMBER ____________________________            
</TABLE>


<PAGE>   1

                                                                      EXHIBIT 12


                               F.N.B. CORPORATION
                       STATEMENT RE COMPUTATION OF RATIOS
                       RATIO OF EARNINGS TO FIXED CHARGES


<TABLE>
<CAPTION>
                                                                AT OR FOR THE YEAR ENDED DECEMBER 31,
                                                                -------------------------------------
                                                 1998           1997            1996            1995            1994

<S>                                         <C>            <C>             <C>             <C>             <C>
Earnings :
    Pretax income from continuing           $     47,916   $     40,162    $     32,818    $     36,432    $     26,929
      operations
    Less:  Income from equity investment           1,286            621
    Dividends from equity investment                 812            324
    Fixed charges                                104,479         93,936          86,194          83,249          66,594
    Less:  Preferred dividend requirements           757            905           1,178           1,306           1,312
                                            ------------   ------------    ------------    ------------    ------------
                                            $    151,164   $    132,897    $    117,834    $    118,375    $     92,211
                                            ============   ============    ============    ============    ============

Fixed Charges
    Interest expense                             103,385         92,664          84,736          81,660          65,043
                                            ------------   ------------    ------------    ------------    ------------
    Estimate of interest within rental               337            368             280             283             239
      expense
    Preferred dividend requirements                  757            905           1,178           1,306           1,312
                                            ------------   ------------    ------------    ------------    ------------
                                            $    104,479   $     93,936    $     86,194    $     83,249    $     66,594

Ratio of Earnings to Fixed Charges                  1.45           1.41            1.37            1.42            1.38
                                            ============   ============    ============    ============    ============
</TABLE>



<PAGE>   1


                                                                    EXHIBIT 23.2


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We consent to the reference to our firm as experts under the caption
"Independent Auditors" in the Registration Statement (Form S-3) and related
Prospectus of F.N.B. Corporation for the registration of $125,000,000 of its
Subordinated Term Notes and Subordinated Daily Notes and to the incorporation by
reference therein of our report dated February 11, 1999, with respect to the
consolidated financial statements of F.N.B. Corporation and subsidiaries
incorporated in its Annual Report on Form 10-K for the year ended December 31,
1998 filed with the Securities and Exchange Commission.



                                             /s/ Ernst & Young LLP

                                                 Ernst & Young LLP


Pittsburgh, Pennsylvania
March 15, 1999



<PAGE>   1
                                                                    EXHIBIT 23.3



            CONSENT OF HILL, BARTH & KING, INC., INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Independent Auditors"
in this Registration Statement on Form S-3 and related Prospectus of F.N.B.
Corporation for the registration of $125,000,000 of its Subordinated Term Notes
and Subordinated Daily Notes and to the incorporation by reference therein of
our report dated January 22, 1997 relating to the consolidated financial
statements of Southwest Banks, Inc. which have been incorporated into the
consolidated financial statements of F.N.B. Corporation and Subsidiaries for the
year ended December 31, 1996 included in the Annual Report on Form 10-K, for the
year ended December 31, 1998 filed with the Securities and Exchange Commission.


                                      /s/ HILL, BARTH & KING, INC.

                                      HILL, BARTH & KING, INC.
                                      Certified Public Accountants



Naples, Florida
March 16, 1999




<PAGE>   1

                                                                    EXHIBIT 23.4


          CONSENT OF PRICEWATERHOUSECOOPERS, LLP, INDEPENDENT AUDITORS


We consent to the reference in this Registration Statement on Form S-3 for the
registration of $125,000,000 of Subordinated Term Notes and Subordinated Daily
Notes of our report dated January 24, 1997, included as Exhibit 99.2 to F.N.B.
Corporation's Annual Report on Form 10-K for the year ended December 31, 1998,
with respect to our audits of the consolidated financial statements of West
Coast Bancorp, Inc. for the year ended December 31, 1996. We also consent to the
reference to our firm as experts under the caption, "Independent Auditors."


                                         /s/ PRICEWATERHOUSECOOPERS, LLP

                                         PRICEWATERHOUSECOOPERS, LLP



Tampa, Florida
March 16, 1999



<PAGE>   1
                                                                    EXHIBIT 23.5


                  CONSENT OF HACKER, JOHNSON, COHEN & GRIEB PA,
                              INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Independent Auditors"
in this Registration Statement and related Prospectus of F.N.B. Corporation on
Form S-3 for the registration of $125,000,000 of its Subordinated Term Notes and
Subordinated Daily Notes and to the incorporation by reference therein of our
report dated January 9, 1998 on our audits of the financial statements of
Seminole Bank at December 31, 1997 and 1996 and for each of the years in the
two-year period ended December 31, 1997 and of our report dated January 9, 1998
except for Note 18, as to which the date is April 6, 1998, on our audits of the
financial statements of Citizens Holding Corporation and subsidiaries at
December 31, 1997 and 1996 and for each of the years in the two-year period
ended December 31, 1997, which reports have been incorporated into the
consolidated financial statements of F.N.B. Corporation and Subsidiaries for the
year ended December 31, 1998 by reference in the Annual Report on Form 10-K for
the year ended December 31, 1998 filed with the Securities and Exchange
Commission.

                                           /s/ HACKER, JOHNSON, COHEN & GRIEB PA

                                           HACKER, JOHNSON, COHEN & GRIEB PA



Tampa, Florida
March 17, 1999



<PAGE>   1
                                                                      EXHIBIT 24


                                POWER OF ATTORNEY

                  KNOW ALL PERSONS BY THESE PRESENTS, that each of F.N.B.
Corporation, and the several undersigned Officers and Directors thereof whose
signatures appear below, hereby makes, constitutes and appoints John D. Waters,
its, his and her true and lawful attorney with power to act without any other
and with full power of substitution, to execute, deliver and file in its, his
and her name and on its, his and her behalf, and in each of the undersigned
Officer's and Director's capacity or capacities as shown below, (a) a
Registration Statement of F.N.B. Corporation on Form S-3 (or other appropriate
form) with respect to the registration under the Securities Act of 1933, as
amended, of up to $125,000,000 of Subordinated Term Notes and Subordinated Daily
Notes of F.N.B. Corporation, and any and all documents in support thereof or
supplements thereto and any and all amendments, including any and all
post-effective amendments, to the foregoing (hereinafter called the
"Registration Statement"), and (b) such registration statements, petitions,
applications, consents to service of process or other instruments, any and all
documents in support thereof or supplemental thereto, and any and all amendments
or supplements to the foregoing, as may be necessary or advisable to qualify or
register the securities covered by said Registration Statement under such
securities laws, regulations or requirements as may be applicable; and each of
F.N.B. Corporation and said Officers and Directors hereby grants to said
attorney full power and authority to do and perform each and every act and thing
whatsoever as said attorney may deem necessary or advisable to carry out fully
the intent of this power of attorney to the same extent and with the same effect
as F.N.B. Corporation might or could do, and as each of said Officers and
Directors might or could do personally in his or her capacity or capacities as
aforesaid, and each of F.N.B. Corporation and said Officers and Directors hereby
ratifies and confirms all acts and things which said attorney might do or cause
to be done by virtue of this power of attorney and its, his or her signature as
the same may be signed by said attorney, or any of them, to any or all of the
following (and/or any and all amendments and supplements to any or all thereof):
such Registration Statement under the Securities Act of 1933, as amended, and
all such registration statements, petitions, applications, consents to service
of process and other instruments, and any and all documents in support thereof
or supplemental thereto, under such securities laws, regulations and
requirements as may be applicable.

                  IN WITNESS WHEREOF, F.N.B. Corporation has caused this power
of attorney to be signed on its behalf, and each of the undersigned Officers and
Directors in the capacity or capacities noted has hereunto set his or her hand
as of the date indicated below. This Power of Attorney may be executed in
counterparts which, when taken together, constitute a single original hereof.

                                       F.N.B. CORPORATION


                                       By: /s/ Peter Mortensen 
                                          -------------------------------------
                                           Peter Mortensen
                                           Chairman of the Board and
                                            Chief Executive Officer

                                       Dated: March 10, 1999
                                             ----------------------------------

<PAGE>   2

<TABLE>
<CAPTION>
               SIGNATURE                           TITLE                                     DATE
               ---------                           -----                                     ----

<S>                                      <C>                                            <C>
   /s/ Peter Mortensen                   
- ------------------------------------     CHAIRMAN OF THE BOARD AND CHIEF                March 10, 1999
       Peter Mortensen                   EXECUTIVE OFFICER (PRINCIPAL
                                         EXECUTIVE OFFICER)


   /s/ Gary L. Tice                      
- ------------------------------------     PRESIDENT, CHIEF OPERATING OFFICER             March 19, 1999
       Gary L. Tice                      AND DIRECTOR



   /s/ Stephen J. Gurgovits              
- ------------------------------------     VICE CHAIRMAN                                  March 19, 1999
       Stephen J. Gurgovits



   /s/ John D. Waters                    
- ------------------------------------     VICE PRESIDENT AND CHIEF FINANCIAL             March 19, 1999
       John D. Waters                    OFFICER (PRINCIPAL FINANCIAL AND
                                         ACCOUNTING OFFICER)
   /s/ W. Richard Blackwood 
- ------------------------------------     DIRECTOR                                       March 17, 1999
       W. Richard Blackwood



   /s/ Alan C. Bomstein                  
- ------------------------------------     DIRECTOR                                       March 19, 1999
       Alan C. Bomstein



   /s/ William B. Campbell               
- ------------------------------------     DIRECTOR                                       March 11, 1999
       William B. Campbell



   /s/ Charles T. Cricks                 DIRECTOR                                       March 19, 1999
- ------------------------------------
       Charles T. Cricks
</TABLE>


                                      -2-


<PAGE>   3


<TABLE>
<CAPTION>
               SIGNATURE                           TITLE                                     DATE
               ---------                           -----                                     ----
<S>                                      <C>                                             <C>

   /s/ Henry M. Ekker, Esq.         
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Henry M. Ekker, Esq.



   /s/ Thomas W. Hodge                   
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Thomas W. Hodge



   /s/ James S. Lindsay
- ------------------------------------     DIRECTOR                                        March 19, 1999
       James S. Lindsay



   /s/ Paul P. Lynch
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Paul P. Lynch



   /s/ Edward J. Mace
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Edward J. Mace



   /s/ Robert S. Moss
- ------------------------------------     DIRECTOR                                        March 11, 1999
       Robert S. Moss



   /s/ Richard C. Myers
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Richard C. Myers



- ------------------------------------     DIRECTOR                                        ________, 1999
       William A. Quinn
</TABLE>


                                      -3-

<PAGE>   4


<TABLE>
<CAPTION>
               SIGNATURE                           TITLE                                     DATE
               ---------                           -----                                     ----

<S>                                      <C>                                             <C>
   /s/ George A. Seeds
- ------------------------------------     DIRECTOR                                        March 11, 1999
       George A. Seeds



   /s/ William J. Strimbu
- ------------------------------------     DIRECTOR                                        March 11, 1999
       William J. Strimbu



   /s/ Archie O. Wallace
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Archie O. Wallace



   /s/ Joseph M. Walton
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Joseph M. Walton



   /s/ James T. Weller
- ------------------------------------     DIRECTOR                                        March 19, 1999
       James T. Weller



   /s/ Eric J. Werner, Esq.
- ------------------------------------     DIRECTOR                                        March 19, 1999
       Eric J. Werner, Esq.



   /s/ R. Benjamin Wiley
- ------------------------------------     DIRECTOR                                        March 12, 1999
          R. Benjamin Wiley



   /s/ Donna C. Winner
- ------------------------------------     DIRECTOR                                        March 11, 1999
       Donna C. Winner
</TABLE>



                                      -4-


<PAGE>   1


                                                                    EXHIBIT 99.1


PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED ________________, 1999)



                               F.N.B. CORPORATION

                                  $125,000,000
                           SUBORDINATED TERM NOTES DUE
             3, 6, 9, 12, 18, 24, 30, 36, 48, 60, 84 AND 120 MONTHS
                                       AND
                            SUBORDINATED DAILY NOTES



         The following interest rates are applicable to Subordinated Term Notes
and Subordinated Daily Notes offered and sold during the period          ,
through          ,   .

<TABLE>
<CAPTION>
                                                   ANNUAL INTEREST RATE
                                                   --------------------

<S>                                                <C>
          Subordinated Daily Notes:                            %

          Subordinated Term Notes:
          3 Month                                              %
          6 Month                                              %
          9 Month                                              %
          12 Month                                             %
          18 Month                                             %
          24 Month                                             %
          30 Month                                             %
          36 Month                                             %
          48 Month                                             %
          60 Month                                             %
          84 Month                                             %
          120 Month                                            %
</TABLE>

                              ______________, ____


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