HUDSON UNITED BANCORP
POS AM, 1999-10-05
STATE COMMERCIAL BANKS
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<PAGE>   1
                                                   REGISTRATION NUMBER 333-84829

As filed with the Securities and Exchange Commission on October __, 1999


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 POST-EFFECTIVE
                               AMENDMENT NO. 1 TO

                                    FORM S-4

                             REGISTRATION STATEMENT
                                      under
                           THE SECURITIES ACT OF 1933


                              HUDSON UNITED BANCORP
             (Exact name of registrant as specified in its charter)


                                   New Jersey
         (State or other Jurisdiction of Incorporation or Organization)


         6711                                            22-2405746
(Primary Standard Industrial                (I.R.S. Employer Identification No.)
 Classification Code Number)


                            1000 MacArthur Boulevard
                            Mahwah, New Jersey 07430
                                  201-236-2600
               (Address, including zip code, and telephone number,
                 including area code, of registrant's principal
                               executive offices)

                               Kenneth T. Neilson
                               Chairman, President
                           and Chief Executive Officer
                              Hudson United Bancorp
                            1000 MacArthur Boulevard
                            Mahwah, New Jersey 07430
                                  201-236-2600
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)


                  Please send copies of all communications to:

     MICHAEL W. ZELENTY, ESQ.                      J. BAUR WHITTLESEY, ESQ.
   PITNEY, HARDIN, KIPP & SZUCH                    LEDGEWOOD LAW FIRM, P.C.
          P.O. Box 1945                          1521 Locust Street, Suite 800
Morristown, New Jersey 07962-1945              Philadelphia, Pennsylvania 19102
          (973) 966-8125                                (215) 731-9450
<PAGE>   2
         APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: At the
Effective Date of the Merger, as defined in the Agreement and Plan of Merger
dated June 28, 1999 (the "Merger Agreement"), among the Registrant, Hudson
United Bank, JeffBanks, Inc., Jefferson Bank and Jefferson Bank of New Jersey.

                  If the securities being registered on this Form are being
offered in connection with the formation of a holding company and there is
compliance with General Instruction G, check the following box. / /

                  If this Form is filed to register additional securities for an
offering pursuant to Rule 462(b) under the Securities Act, check the following
box and list the Securities Act registration number of the earlier effective
registration statement for the same offering. / / __________

                  If this Form is a post-effective amendment filed pursuant to
Rule 462(b) under the Securities Act, check the following box and list the
Securities Act registration number of the earlier effective registration
statement for the same offering. / / __________


         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 SECTION 8(a), MAY
DETERMINE.
<PAGE>   3
JeffBanks, Inc.                                            Hudson United Bancorp

      WE ARE SOLICITING NEW PROXIES FOR YOUR VOTE ON THE JEFFBANKS - HUDSON
                   UNITED MERGER - YOUR VOTE IS VERY IMPORTANT

         On August 13, 1999, we mailed you a meeting notice and joint proxy
statement-prospectus for special meetings of shareholders to vote on the merger
of JeffBanks, Inc. into Hudson United Bancorp. The Hudson United meeting was
scheduled for September 30, 1999. The JeffBanks meeting was scheduled for
October 1, 1999. As explained below, each of the meetings was adjourned. The
adjourned meetings will be reconvened as follows:

         THE JEFFBANKS MEETING
         ___ _.m., November __, 1999
         The Rittenhouse Hotel
         210 West Rittenhouse Square
         Philadelphia, Pennsylvania 19103

         THE HUDSON UNITED MEETING
         ___ _.m., November __, 1999
         The Sheraton Crossroads
         Route 17 North
         Mahwah, New Jersey 07495

         On September 15, 1999, Hudson United announced that it has entered into
a merger agreement with Dime Bancorp, Inc. The transaction is structured as a
"merger of equals." Dime is to be the surviving corporation with the new name
"Dime United Bancorp, Inc." Each share of Hudson United common stock is to
become one share of Dime United common stock and each share of Dime common stock
is to be combined into 0.585 shares of Dime United common stock.

         The Hudson United - JeffBanks merger agreement calls for JeffBanks
shareholders to receive 0.95 shares of Hudson United common stock for each share
of JeffBanks common stock. If the Dime merger is completed, each Hudson United
share, including those issued in the Hudson United - JeffBanks merger, will
become one share of Dime United common stock. Thus, if both mergers are
completed, you will then own 0.95 shares of Dime United for each share of
JeffBanks common stock you now own.

         We adjourned our meetings so that we could prepare and send you
additional information on this new development and give you an opportunity to
consider it before voting on the Hudson United - JeffBanks merger. We encourage
you to read the supplemented proxy statement-prospectus carefully before voting.

         Because of the importance of the information contained in the
supplement, we have decided to solicit new proxies for the meeting. THUS, EVEN
IF YOU PREVIOUSLY VOTED BY PROXY AND DO NOT WISH TO CHANGE YOUR VOTE, YOU MUST
SEND IN A NEW PROXY CARD FOR YOUR VOTE TO BE COUNTED.

         Hudson United common stock is listed on the New York Stock Exchange
under the symbol "HU." Based on October __, 1999 closing prices, 0.95 shares of
Hudson United common stock had a value of $___. Dime is listed on the NYSE under
the symbol "DME." It is expected that Dime United stock will also be
NYSE-listed.

         Both the JeffBanks - Hudson United merger and the Hudson United - Dime
merger are structured so that shareholders will not be taxed on the exchange of
their stock.

         [The JeffBanks and Hudson United Boards of Directors each recommends
that its shareholders vote "FOR" approval of the JeffBanks - Hudson United
merger.]

         YOUR VOTE IS VERY IMPORTANT. Please take the time to complete, execute
and return the new yellow (JeffBanks) or blue (Hudson United) proxy card in the
envelope provided.


BETSY Z. COHEN                              KENNETH T. NEILSON
Chairman and Chief Executive Officer        Chairman and Chief Executive Officer
JeffBanks, Inc.                             Hudson United Bancorp


NEITHER THE SECURITIES AND EXCHANGE COMMISSION, NOR ANY BANK REGULATORY AGENCY,
NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE
SECURITIES OR DETERMINED IF THE PROSPECTUS OR THIS SUPPLEMENT IS TRUTHFUL OR
COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

        This is a supplement dated October __, 1999 to the attached joint
   proxy statement-prospectus dated August 13, 1999. This supplement and the
     accompanying proxy cards are first being mailed to JeffBanks and Hudson
                    United shareholders on October __, 1999.
<PAGE>   4
                                 JEFFBANKS, INC.
                               1845 WALNUT STREET
                        PHILADELPHIA, PENNSYLVANIA 19103

            NOTICE OF RECONVENING OF SPECIAL MEETING OF SHAREHOLDERS
                          ADJOURNED ON OCTOBER 1, 1999
                    AND BEING RECONVENED ON NOVEMBER __, 1999


To the Shareholders of JeffBanks, Inc.:

         Notice is hereby given that the special meeting of shareholders of
JeffBanks, Inc., which was adjourned on October 1, 1999, will be reconvened at
The Rittenhouse Hotel, 210 West Rittenhouse Square, Philadelphia, Pennsylvania
19103 at ___ _.m. on November __, 1999. The following are the purposes for the
special meeting:

         (1)      To consider and vote upon an Agreement and Plan of Merger
                  dated as of June 28, 1999, among Hudson United Bancorp, Hudson
                  United Bank, JeffBanks, Inc., Jefferson Bank and Jefferson
                  Bank of New Jersey, pursuant to which JeffBanks, Inc. will
                  merge into Hudson United Bancorp.

         (2)      To transact other business that may properly come before the
                  special meeting or any adjournment or postponement of the
                  special meeting.

         The record date for the special meeting has not been changed. Only
shareholders of record at the close of business on August 10, 1999 are entitled
to receive notice of and to vote at the special meeting or any adjournments or
postponements of the special meeting.

         [THE JEFFBANKS BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT
SHAREHOLDERS VOTE "FOR" APPROVAL OF THE MERGER.]



                                        By Order of the Board of Directors,


                                        BETSY Z. COHEN
                                        Chairman and Chief Executive Officer
<PAGE>   5
                              HUDSON UNITED BANCORP
                            1000 MACARTHUR BOULEVARD
                            MAHWAH, NEW JERSEY 07430

            NOTICE OF RECONVENING OF SPECIAL MEETING OF SHAREHOLDERS
                         ADJOURNED ON SEPTEMBER 30, 1999
                    AND BEING RECONVENED ON NOVEMBER __, 1999


To the Shareholders of Hudson United Bancorp:

         Notice is hereby given that the special meeting of shareholders of
Hudson United Bancorp which was adjourned on September 30, 1999 will be
reconvened at The Sheraton Crossroads, Route 17 North, Mahwah, New Jersey 07495
at ___ _.m. on November __, 1999. The following are the purposes for the special
meeting:

         (1)      To consider and vote upon an Agreement and Plan of Merger
                  dated as of June 28, 1999, among Hudson United Bancorp, Hudson
                  United Bank, JeffBanks, Inc., Jefferson Bank and Jefferson
                  Bank of New Jersey, pursuant to which JeffBanks, Inc. will
                  merge into Hudson United Bancorp.

         (2)      To transact other business that may properly come before the
                  special meeting or any adjournment or postponement of the
                  special meeting.

         The record date for the special meeting has not been changed. Only
shareholders of record at 3:00 p.m. on August 13, 1999 are entitled to receive
notice of and to vote at the special meeting or any adjournments or
postponements of the special meeting.

         THE HUDSON UNITED BANCORP BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS
THAT SHAREHOLDERS VOTE "FOR" APPROVAL OF THE MERGER.



                                            By Order of the Board of Directors,


                                            KENNETH T. NEILSON
                                            Chairman and Chief Executive Officer
<PAGE>   6
         THIS DOCUMENT IS A SUPPLEMENT TO THE PROXY STATEMENT-PROSPECTUS THAT
WAS MAILED TO YOU ON AUGUST 13, 1999. IT SHOULD BE READ IN CONJUNCTION WITH THE
PROXY STATEMENT-PROSPECTUS, WHICH IS ATTACHED. INFORMATION IN THIS SUPPLEMENT
THAT DIFFERS FROM OR ADDS TO WHAT WAS IN THE AUGUST 13, 1999 PROXY
STATEMENT-PROSPECTUS SHOULD BE CONSIDERED AN AMENDMENT TO THE ORIGINAL DOCUMENT.


                              QUESTIONS AND ANSWERS

Q:       Why did you adjourn the JeffBanks and Hudson United special meetings?

A:       On September 15, 1999 Hudson United announced an agreement to merge
         with Dime Bancorp, Inc. We adjourned the meetings so that we could
         prepare and send you the information contained in this supplement, and
         give you an opportunity to consider the additional information, as well
         as information which is incorporated by reference into this supplement
         and the proxy statement-prospectus, before you vote on the JeffBanks -
         Hudson United merger.

Q:       How is the Hudson United - Dime merger structured, and how will the
         combined entity be managed?

A:       The transaction is structured as a "merger of equals." Hudson United
         will merge into Dime, with Dime as the surviving corporation. The new
         name of the merged entity will be Dime United Bancorp, Inc. The Board
         of Directors of Dime United initially is to be composed of 13 former
         Dime directors and 12 former Hudson directors. Lawrence J. Toal,
         currently the Chairman and CEO of Dime, is to serve in the same
         capacity for Dime United until his retirement on December 31, 2002.
         Kenneth T. Neilson, currently the Chairman and CEO of Hudson United,
         is to serve as President and COO of Dime United until December 31,
         2002, and then he is to become Dime United's Chairman and CEO.

Q:       What is the exchange ratio in the proposed Hudson United - Dime merger?

A:       Upon completion of the merger, each share of Hudson United common
         stock will automatically become one share of common stock in Dime
         United. Each share of Dime common stock will be combined into 0.585
         shares of Dime United common stock in the merger. The Dime United
         common stock is expected to be listed on the NYSE.

         On September 14, 1999, the day before announcement of the Hudson United
         - Dime agreement, the closing price of Hudson United common stock on
         the NYSE was $30-1/8 and the closing price of Dime common stock on the
         NYSE was $17-3/4. On October __, 1999, the closing price of Hudson
         United common stock was $_____ and the closing price of Dime common
         stock was $_____.

Q:       Will the Hudson United - Dime merger be tax-free to Hudson United
         shareholders?

A:       Yes. The merger is structured so that Hudson United shareholders will
         not generally recognize federal income tax gain or loss upon receiving
         Dime United common stock in the merger.
<PAGE>   7
Q:       Can you provide some basic information about Dime Bancorp?

A:       Dime Bancorp, Inc. is a savings and loan holding company incorporated
         in Delaware, and headquartered in New York City. Dime is the holding
         company for The Dime Savings Bank of New York, FSB, a
         federally-chartered savings bank. The principal subsidiary of Dime
         Savings Bank is North American Mortgage Company, a mortgage banking
         company that was acquired by Dime in October 1997. At June 30, 1999,
         Dime operated 100 banking branches located throughout the greater New
         York City metropolitan area. Directly and through North American
         Mortgage Company, Dime also provides consumer financial services and
         mortgage banking services throughout the United States. At June 30,
         1999, Dime had assets of $21.4 billion, deposits of $13.4 billion and
         stockholders' equity of $1.5 billion. Dime is currently in the process
         of acquiring 28 branches of Key Bank, N.A. on Long Island, New York.
         Additional information about Dime can be obtained from its filings with
         the SEC, which can be accessed on the SEC's Internet site at
         http://www.sec.gov.

Q:       Dime Savings Bank is a "thrift" and Hudson United Bank is a commercial
         bank - what form will the primary Dime United subsidiary take after the
         merger?

A:       It is expected that the primary depository institution subsidiary of
         Dime United after the merger will be a New Jersey chartered commercial
         bank to be named "DimeBank."

Q:       What do I do now?

A:       We urge you to read this supplement and the attached original proxy
         statement-prospectus before deciding how to vote on the Hudson
         United-JeffBanks merger. Then, vote your shares in the manner indicated
         below. Because of the importance of the information contained in this
         supplement, we have decided to solicit new proxies for the meeting.
         NONE OF THE WHITE PROXY CARDS WHICH YOU OR YOUR FELLOW SHAREHOLDERS
         SENT IN RESPONSE TO THE ORIGINAL PROXY SOLICITATION WILL BE COUNTED AT
         THE MEETING. EVEN IF YOU PREVIOUSLY VOTED BY PROXY AND DO NOT WISH TO
         CHANGE YOUR VOTE, YOU MUST SEND IN A YELLOW (JEFFBANKS) OR BLUE (HUDSON
         UNITED) PROXY CARD (OR VOTE IN PERSON AT THE MEETING) FOR YOUR VOTE TO
         BE COUNTED.

Q:       How do I vote by proxy?

A:       Just indicate on the enclosed proxy card how you want to vote with
         respect to the Hudson United-JeffBanks merger. Sign the card and mail
         it in the enclosed prepaid return envelope as soon as possible so that
         your shares may be represented and voted at the meeting.

Q:       Can I change my vote after I have mailed my signed proxy card?

A:       Yes. There are three ways in which you may revoke your proxy and change
         your vote. First, you may send a written notice of revocation to the
         corporate secretary. (Information on how to contact the corporate
         secretaries of JeffBanks and Hudson United is contained on page 4.)
         Second, you may complete and submit a new proxy with a later date.
         Third, you may attend the JeffBanks or Hudson United meeting and
         request a return of your proxy or vote in person. Simply showing up at
         the meeting without voting will not revoke your proxy.


                                       2
<PAGE>   8
Q:       Should JeffBanks shareholders send in their stock certificates now?

A:       No. After the Hudson United - JeffBanks merger is completed, Hudson
         United's exchange agent will send JeffBanks shareholders written
         instructions for exchanging their stock certificates for certificates
         representing Hudson United common stock.

Q:       When do you expect the Hudson United - JeffBanks merger to be
         completed?

A:       We currently expect the Hudson United - JeffBanks merger to be
         completed during the fourth quarter of 1999. If all other closing
         conditions are met, the closing may occur right after the Hudson United
         shareholders and the JeffBanks shareholders approve the merger at their
         reconvened meetings. However, the exact time when the merger will be
         completed is dependent upon receipt of shareholder approval and bank
         regulatory approval, and satisfaction of a number of other conditions,
         some of which are not under JeffBanks' or Hudson United's control.

Q:       What conditions must be met in order for the Hudson United - Dime
         merger to close?

A:       Completion of the Hudson United - Dime merger is contingent on the
         satisfaction of a number of conditions, including:

         -        Approval of the merger agreement by both Hudson United and
                  Dime shareholders,

         -        Receipt of bank regulatory approvals,

         -        Receipt of opinions from Dime's and Hudson United's counsels
                  regarding the tax-free nature of the merger, and

         -        Receipt of a letter from Dime's and Hudson United's
                  independent public accountants regarding qualification of the
                  merger for pooling-of-interests accounting.

Q:       When do you expect the Hudson United-Dime merger to be completed?

A:       We currently expect the Hudson United - Dime merger to be completed
         during the first quarter of 2000. However, we cannot assure you that
         the Hudson United - Dime merger will be completed or, if it is
         completed, when that will occur.

Q:       Will JeffBanks shareholders get to vote on the Hudson United - Dime
         merger?

A:       The Hudson United Board of Directors has not yet called a shareholders
         meeting to vote on the Hudson United-Dime merger, and thus no record
         date has been set. On the date this supplement is being mailed, Hudson
         United expects that the JeffBanks - Hudson United merger will be
         completed before the record date for the meeting to vote on the Dime
         merger. If that timetable is met, former JeffBanks shareholders will
         become Hudson United shareholders and will have the same opportunity as
         the other Hudson United shareholders to consider and vote on the Dime
         merger. We cannot assure you that this will occur. If the Hudson United
         - JeffBanks merger does not close before the Hudson United record date
         for voting on the Dime merger, you will not have an opportunity to vote
         on the Dime merger. In that event, which we consider unlikely, the
         JeffBanks Board of Directors will determine whether to further
         supplement the proxy statement-prospectus and resolicit JeffBanks
         shareholder approval of the Hudson United - JeffBanks merger.


                                       3
<PAGE>   9
Q:       Where can I obtain a copy of the Hudson United - Dime merger agreement
         and other information about the Hudson United - Dime merger?

A:       The Hudson United - Dime merger agreement is an exhibit to Hudson
         United's Current Report on Form 8-K filed with the SEC on
         September 24, 1999. The press release issued by Hudson United and
         Dime announcing the merger agreement and certain information used to
         explain the merger to stock analysts on the day of announcement and
         other relevant information are exhibits to Hudson United's Current
         Report on Form 8-K filed with the SEC on September 16, 1999. Certain
         additional information explaining the merger are exhibits to Hudson
         United's Current Report on Form 8-K filed with the SEC on
         September 20, 1999. Each of these filings are incorporated by reference
         into the proxy statement-prospectus. These and other SEC filings can be
         accessed on the SEC's Internet site at http://www.sec.gov. In addition,
         you may obtain copies of JeffBanks or Hudson United SEC filings free of
         charge by writing or calling:

         FOR JEFFBANKS DOCUMENTS:
         William H. Lamb, Corporate Secretary
         JeffBanks, Inc.
         1845 Walnut Street
         Philadelphia, Pennsylvania 19103
         (215) 861-7000

         FOR HUDSON UNITED DOCUMENTS:
         D. Lynn Van Borkulo-Nuzzo, Corporate Secretary,
         Hudson United Bancorp
         1000 MacArthur Boulevard
         Mahwah, New Jersey 07430
         (201) 236-2641

         We will respond to your request within one business day by sending the
         requested documents by first class mail or other equally prompt means.
         In order to ensure timely delivery of the documents in advance of the
         reconvened meetings, any request should be made by November __, 1999.

Q:       Whom should I call with questions or to obtain additional copies of
         this document?

A:       You should contact either William H. Lamb or D. Lynn Van Borkulo-Nuzzo,
         at the addresses and telephone numbers listed in the preceding answer.


                                       4
<PAGE>   10
                                TABLE OF CONTENTS


Questions and Answers......................................................   1
How to Get Copies of Related Documents.....................................   5
Information Incorporated by Reference......................................   6
Information About the Proposed Hudson United - Dime Merger.................   7
Information About Dime Bancorp, Inc........................................   8
Effect of the Hudson United - Dime Merger on JeffBanks Shareholders........   9
Management and Operations After the Merger.................................   9
Recommendation of the JeffBanks Board of Directors.........................  10
Recommendation of the Hudson United Board of Directors.....................  10
Updated Summary Financial Data Of Hudson United............................  10
Updated Summary Financial Data Of JeffBanks................................  12
Recent Developments Concerning Hudson United ..............................  14
Recent Developments Concerning JeffBanks ..................................  14
Status of Regulatory Approvals on the JeffBanks-Hudson United Merger ......  14
Updated and Additional Comparative Share Information and Market Prices.....  15
Summary Pro Forma Financial Information....................................  16
Pro Forma Financial Information............................................  17
Information About the Reconvened JeffBanks Meeting.........................  25
Information About the Reconvened Hudson United Meeting.....................  26
Other Matters..............................................................  27
Experts  ..................................................................  27

                     HOW TO GET COPIES OF RELATED DOCUMENTS

         THE PROXY STATEMENT-PROSPECTUS AND THIS SUPPLEMENT INCORPORATE
IMPORTANT BUSINESS AND FINANCIAL INFORMATION THAT IS NOT INCLUDED IN OR
DELIVERED WITH THE PROXY STATEMENT-PROSPECTUS OR THIS SUPPLEMENT. JEFFBANKS OR
HUDSON UNITED SHAREHOLDERS MAY RECEIVE THE INFORMATION FREE OF CHARGE BY WRITING
OR CALLING THE PERSONS LISTED BELOW. FOR HUDSON UNITED DOCUMENTS, MAKE YOUR
REQUEST TO D. LYNN VAN BORKULO-NUZZO, CORPORATE SECRETARY, HUDSON UNITED
BANCORP, 1000 MACARTHUR BOULEVARD, MAHWAH, NJ 07430; TELEPHONE NUMBER (201)
236-2641. FOR JEFFBANKS DOCUMENTS, MAKE YOUR REQUEST TO WILLIAM H. LAMB,
CORPORATE SECRETARY, JEFFBANKS, INC., 1845 WALNUT STREET, PHILADELPHIA, PA
19103; TELEPHONE (215) 861-7000. WE WILL RESPOND TO YOUR REQUEST WITHIN ONE
BUSINESS DAY BY SENDING THE REQUESTED DOCUMENTS BY FIRST CLASS MAIL OR OTHER
EQUALLY PROMPT MEANS. IN ORDER TO ENSURE TIMELY DELIVERY OF THE DOCUMENTS IN
ADVANCE OF THE RECONVENED MEETINGS, ANY REQUEST SHOULD BE MADE BY NOVEMBER __,
1999.


                                       5
<PAGE>   11
                      INFORMATION INCORPORATED BY REFERENCE

         Hudson United changed its name from HUBCO, Inc. on April 22, 1999 and
documents filed before that date may be located on the SEC Edgar database under
that name.

         The following documents filed by Hudson United (Commission File No.
1-08660) with the SEC are hereby incorporated in the proxy statement-prospectus
and in this supplement:

         -        Annual Report on Form 10-K for the year ended December 31,
                  1998, as amended by Form 10-K/A filed on September 28, 1999.

         -        Quarterly Reports on Form 10-Q for the quarters ended March
                  31, and June 30, 1999, as amended by Form 10-Q/A filed on
                  September 10, 1999. (The Form 10-Q/A clarifies that the
                  authorized capital stock of Hudson United consists of 100
                  million shares of common stock and 25 million shares of
                  preferred stock.)

         -        Current Reports on Form 8-K filed with the SEC on January 28,
                  March 29, April 19, April 22, May 25, June 29 (as amended on
                  June 30), July 26, September 16, September 20, September 24,
                  September 24 (second filing), and October 5, 1999. One of
                  Hudson United's two Current Reports on Form 8-K filed on
                  September 24, 1999 includes as an exhibit the merger agreement
                  between Hudson United and Dime. Hudson United's Current Report
                  on Form 8-K filed on October 5, 1999 includes as an exhibit
                  Dime's audited financial statements for the year ended
                  December 31, 1998.

         -        The description of Hudson United common stock set forth in
                  Hudson United's Registration Statement on Form 8-A12B filed by
                  Hudson United on April 22, 1999, pursuant to Section 12 of the
                  Exchange Act, and any amendment or report filed for the
                  purpose of updating such description.

         The following documents filed by JeffBanks (Commission File No.
001-14318) with the SEC are hereby incorporated in the proxy
statement-prospectus and in this supplement:

         -        Annual Report on Form 10-K for the year ended December 31,
                  1998.

         -        Quarterly Reports on Form 10-Q for the quarters ended March 31
                  and June 30, 1999.

         -        Current Report on Form 8-K filed with the SEC on July 29,
                  1999.

         -        The description of JeffBanks common stock set forth in
                  JeffBanks' Registration Statement on Form 8-A filed by
                  JeffBanks pursuant to Section 12 of the Exchange Act, and any
                  amendment or report filed for the purpose of updating such
                  description.

         All documents filed by Hudson United or JeffBanks pursuant to Sections
13(a), 13(c), 14, or 15(d) of the Exchange Act after the date of this supplement
but before the earlier of

         -        the date of the JeffBanks meeting,

         -        the date of the Hudson United meeting, or

         -        the termination of the Hudson United - JeffBanks merger
                  agreement,


                                       6
<PAGE>   12
are hereby incorporated by reference into the proxy statement-prospectus and
this supplement and shall be deemed a part of the proxy statement-prospectus and
this supplement from the date they are filed.

         Any statement contained in a document incorporated by reference in the
proxy statement-prospectus and this supplement shall be considered modified or
superseded to the extent that a statement contained in the proxy
statement-prospectus, in this supplement, or in any subsequently filed document
incorporated by reference in the proxy statement-prospectus, modifies or
supersedes the statement. Any statement so modified or superseded shall not be
considered, except as so modified or superseded, to constitute a part of the
proxy statement-prospectus and this supplement.

         The public may read and copy any documents Hudson United or JeffBanks
file with the SEC at the SEC's Public Reference Room at 450 Fifth Street, N.W.,
Washington, DC 20549. The public may obtain information on the operation of the
Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also
maintains an Internet site that contains reports, proxy and information
statements, and other information about Hudson United and JeffBanks at
http://www.sec.gov.

           INFORMATION ABOUT THE PROPOSED HUDSON UNITED - DIME MERGER

         MORE COMPLETE INFOMATION IS AVAILABLE ELSEWHERE. The following
information is derived primarily from the merger agreement between Hudson United
Bancorp and Dime Bancorp, Inc., dated September 15, 1999. Hudson United has
filed Current Reports on Form 8-K containing as exhibits the merger agreement,
the press release issued by Hudson United and Dime announcing the merger
agreement and certain information used to explain the merger to stock analysts.
These and other SEC filings can be accessed on the SEC's Internet site at
http://www.sec.gov. In addition, you may obtain copies of the SEC filings
incorporated by reference in the proxy statement-prospectus free of charge by
writing or calling the Corporate Secretaries of Hudson United or JeffBanks, at
the addresses and phone numbers shown for them on page 4.

         HUDSON UNITED HAS ENTERED INTO AGREEMENTS WITH DIME. On September 15,
1999 Hudson United announced an agreement to merge with Dime Bancorp, Inc.
Hudson United and Dime also entered into customary stock option agreements by
which each provided the other with the right to purchase up to 19.9% of its
common stock under certain specified circumstances. These stock option
agreements are designed to deter third parties from attempting to acquire either
Hudson United or Dime.

         THE SURVIVING CORPORATION WILL BE CALLED DIME UNITED BANCORP, INC. The
transaction is structured so that Hudson United will merge into Dime, with Dime
as the surviving corporation. The name of the merged entity will be Dime United
Bancorp, Inc. In this supplement, we refer to the surviving corporation as "Dime
United." While Hudson United is a New Jersey corporation, Dime United will be a
Delaware corporation. The certificate of incorporation of Dime United will
differ from Hudson United's certificate of incorporation in certain respects.
Hudson United is a commercial bank holding company, while Dime is a unitary
savings and loan holding company. Dime United will be a commercial bank holding
company.

         MANAGEMENT OF THE COMBINED COMPANY WILL COME FROM BOTH DIME AND HUDSON
UNITED. The transaction is structured as a "merger of equals." The Hudson
United-Dime merger agreement provides that the Board of Directors of Dime
United will initially be composed of 13 former Dime directors and 12 former
Hudson United directors. Under the terms of the merger agreement, Lawrence J.
Toal, currently the Chairman and CEO of Dime, is to serve in the same capacity
for Dime United until his retirement on December 31, 2002. The merger
agreement  provides that Kenneth T. Neilson, currently the Chairman and CEO of
Hudson  United, is to serve as President and COO of Dime United until  December
31, 2002, and then he is to become Dime United's Chairman and CEO.


                                       7
<PAGE>   13
        EACH SHARE OF HUDSON UNITED IS TO BECOME ONE SHARE OF DIME UNITED.
Upon completion of the merger, each share of Hudson United common stock
will automatically become one share of common stock in Dime United. Each share
of Dime common stock will be combined into 0.585 shares of Dime United common
stock in the merger. On September 14, 1999, the day before announcement of the
Hudson United - Dime merger agreement, the closing price of Hudson United common
stock on the NYSE was $30-1/8 and the closing price of Dime common stock on the
NYSE was $17-3/4. On October __, 1999, the closing price of Hudson United common
stock was $_____ and the closing price of Dime common stock was $_____.

         HUDSON UNITED COMMON STOCK AND DIME COMMON STOCK ARE NYSE-LISTED.
Hudson United common stock and Dime common stock are traded on the New York
Stock Exchange under the symbols "HU" and "DME", respectively. The Dime United
common stock is also expected to be listed on the NYSE.

         THE MERGER IS INTENDED TO BE TAX-FREE FOR SHAREHOLDERS. The merger is
structured so that Hudson United shareholders will not generally recognize
federal income tax gain or loss upon receiving Dime United common stock in the
merger.

         DIME UNITED WILL OPERATE ITS PRIMARY SUBSIDIARY AS A COMMERCIAL BANK.
Dime Savings Bank is a "thrift" and Hudson United Bank is a New Jersey-chartered
commercial bank. It is expected that the primary depository institution
subsidiary of Dime United after the merger will be a New Jersey-chartered
commercial bank named "DimeBank."

         COMPLETION OF THE MERGER IS SUBJECT NUMEROUS CONDITIONS. Completion
of the Hudson United - Dime merger is contingent on the satisfaction of a number
of conditions, including:

         -        Approval of the merger agreement by both Hudson United and
                  Dime shareholders,

         -        Receipt of bank regulatory approvals,

         -        Receipt of an opinion from Dime's and Hudson United's counsels
                  regarding the tax-free nature of the merger, and

         -        Receipt of a letter from Dime's and Hudson United's
                  independent public accountants regarding qualification of the
                  merger for pooling-of-interests accounting.

         THE MERGER IS EXPECTED TO CLOSE DURING THE FIRST QUARTER OF 2000.
Assuming that shareholder approval is received and other closing conditions are
satisfied, Hudson United anticipates that its merger with Dime will be completed
during the first quarter of 2000. However, the exact time when that merger will
be completed is dependent upon receipt of approval from the shareholders of both
Hudson United and Dime, receipt of bank regulatory approval, and satisfaction of
a number of other conditions, many of which are outside Hudson United's control.
We cannot assure you that all of the conditions will be satisfied in a timely
fashion or at all.

                      INFORMATION ABOUT DIME BANCORP, INC.

         Dime Bancorp, Inc. is a savings and loan holding company incorporated
in Delaware, and headquartered in New York City. Dime is the holding company for
The Dime Savings Bank of New York, FSB, a federally-chartered savings bank. The
principal subsidiary of Dime Savings Bank is North American Mortgage Company, a
mortgage banking company that was acquired by Dime in October 1997. At June 30,
1999, Dime operated 100 banking branches located throughout the greater New York
City metropolitan area. Directly and through North American Mortgage Company,
Dime also provides consumer financial services and mortgage banking services
throughout the United States. At June 30,


                                       8
<PAGE>   14
1999, Dime had assets of $21.4 billion, deposits of $13.4 billion and
stockholders' equity of $1.5 billion. Dime is currently in the process of
acquiring 28 branches of Key Bank, N.A. on Long Island, New York. Additional
information about Dime can be obtained from its filings with the SEC.

                    EFFECT OF THE HUDSON UNITED - DIME MERGER
                            ON JEFFBANKS SHAREHOLDERS

         The Hudson United - JeffBanks merger agreement calls for JeffBanks
shareholders to receive 0.95 shares of Hudson United common stock for each share
of JeffBanks common stock. The Hudson United - Dime merger agreement provides
that each share of Hudson United common stock will be converted into one share
of Dime United common stock. Therefore if the Hudson United - JeffBanks merger
is completed, and the Hudson United - Dime merger is also completed, each share
of JeffBanks common stock will ultimately become 0.95 shares of Dime United
common stock. These shares would represent an equity interest in a corporation
which includes the combined operations of Hudson United and Dime. On a pro forma
basis, assuming completion of Hudson United's pending acquisitions of JeffBanks
and Southern Jersey Bancorp of Delaware, Inc., the combined entity would have
assets in excess of $30 billion, banking operations in four states (New York,
New Jersey, Pennsylvania and Connecticut), and nationwide consumer financial
services and mortgage banking activities. See the Pro Forma Financial
Information beginning on page 17.

         WHEN YOU VOTE ON THE JEFFBANKS-HUDSON UNITED MERGER, YOU ARE NOT
VOTING ON THE HUDSON UNITED - DIME MERGER. WE CANNOT ASSURE YOU THAT THE HUDSON
UNITED - DIME MERGER WILL BE COMPLETED OR, IF IT IS COMPLETED, WHEN THAT WILL
OCCUR.

                   MANAGEMENT AND OPERATIONS AFTER THE MERGER

         The disclosure in the proxy statement-prospectus on page 51 under the
caption "Management and Operations After the Merger" is amended as follows, to
address the effects of the proposed Hudson United - Dime merger.

         As a result of the JeffBanks - Hudson United merger, JeffBanks will be
merged with Hudson United, with Hudson United as the surviving entity.
Immediately following that merger, Jefferson Bank and Jefferson Bank of New
Jersey will both be merged with and into Hudson United Bank, with Hudson United
Bank as the surviving entity. Hudson United Bank will continue to operate as a
wholly-owned subsidiary of Hudson United.

         Hudson United agreed in the Hudson United - JeffBanks merger agreement
that, for a period of at least three years after the JeffBanks - Hudson United
merger, Hudson United Bank will operate a separate division to be known as the
Jefferson Bank Division of the bank. Hudson United and Dime have agreed to
continue operating the separate division if the Hudson United - Dime merger is
completed. Hudson United will cause the appointment of Betsy Z. Cohen as
Chairperson and Chief Executive Officer of the new division, and Robert B.
Goldstein as President and Chief Operating Officer of the new division. Mrs.
Cohen is currently Chairperson and Chief Executive Officer of JeffBanks, and Mr.
Goldstein is currently President and Chief Operating Officer of JeffBanks and of
Jefferson Bank. All current JeffBanks directors will be invited to serve as
advisory directors for the new division. The new division will be responsible
for the former business banking operations of JeffBanks' subsidiary banks and
the southern New Jersey branches of Hudson United Bank. The division will also
be responsible for the residential mortgage lending and consumer lending
operations of Hudson United Bank. If the Hudson United - Dime merger is
completed, responsibility for the residential mortgage lending and consumer
lending operations of Dime Bank is expected to be shifted elsewhere, although no
decision has yet been made.


                                       9
<PAGE>   15
         Hudson United has agreed to appoint Mrs. Cohen and William H. Lamb as
directors of Hudson United when the JeffBanks - Hudson United merger occurs. Mr.
Lamb is currently a JeffBanks director. At Hudson United's next annual
shareholders' meeting, Mrs. Cohen will be nominated to serve for a three-year
term. If the Hudson United - Dime merger occurs on the timetable currently
contemplated, Hudson United will have no further annual shareholders' meetings.
Hudson United has also agreed to appoint three persons designated by JeffBanks
and reasonably acceptable to Hudson United as directors of Hudson United Bank
when the JeffBanks - Hudson United merger occurs.

         If the Hudson United - Dime merger is completed, Hudson United will
have the right to designate 12 of the 25 directors of Dime United. (Dime Bank
will have the same directors as Dime United.) We anticipate that the JeffBanks -
Hudson United merger will close before the Hudson United - Dime merger, and that
the Hudson United Board of Directors will select its 12 director-designees from
among those persons (including Mrs. Cohen and Mr. Lamb) who will be directors of
Hudson United when the selection is made.

               RECOMMENDATIONS OF THE JEFFBANKS BOARD OF DIRECTORS

         [The JeffBanks Board of Directors has considered the impact of the
Hudson United - Dime merger agreement, has confirmed its approval of the Hudson
United - JeffBanks merger agreement, and has determined that the Hudson United -
JeffBanks merger remains fair to, and in the best interests of, JeffBanks and
its shareholders. ACCORDINGLY, THE BOARD OF DIRECTORS OF JEFFBANKS UNANIMOUSLY
RECOMMENDS THAT JEFFBANKS SHAREHOLDERS VOTE FOR APPROVAL AND ADOPTION OF THE
HUDSON UNITED - JEFFBANKS MERGER AGREEMENT AND MERGER.]

             RECOMMENDATIONS OF THE HUDSON UNITED BOARD OF DIRECTORS

         THE BOARD OF DIRECTORS OF HUDSON UNITED CONTINUES TO UNANIMOUSLY
RECOMMEND THAT HUDSON UNITED SHAREHOLDERS VOTE FOR APPROVAL AND ADOPTION OF THE
HUDSON UNITED - JEFFBANKS MERGER AGREEMENT AND MERGER.

                 UPDATED SUMMARY FINANCIAL DATA OF HUDSON UNITED

         The following is a summary of certain historical consolidated financial
data for Hudson United as of and for the six months ended June 30, 1999 and
1998. This financial data should be read in conjunction with the financial data
for Hudson United for the years 1994 through 1998, and as of the end of those
years, set forth on pages 9-11 of the joint proxy statement-prospectus. The data
presented as of and for the six months ended June 30, 1999 and 1998 comes from
Hudson United's unaudited consolidated financial statements. Hudson United's
unaudited consolidated financial statements as of and for the six months ended
June 30, 1999 and 1998 are incorporated by reference in this document. See pages
6 - 7.

         In the opinion of Hudson United's management, the unaudited data shown
below reflects all adjustments necessary for a fair presentation of that data.
All such adjustments were normal, recurring adjustments. Results for the six
months ended June 30, 1999 do not necessarily indicate the results that you
should expect for any other interim period or for the year as a whole.


                                       10
<PAGE>   16
<TABLE>
<CAPTION>
                                                     At or for the Six Months ended June 30,
                                                     --------------------------------------
                                                        1999                        1998
                                                     ----------                  ----------
EARNINGS SUMMARY:                               (DOLLARS IN THOUSANDS EXCEPT PER SHARE AMOUNTS)
<S>                                                  <C>                         <C>
Interest income                                      $  232,369                  $  233,377
Interest expense                                        102,069                     106,974
                                                     ----------                  ----------
Net interest income                                     130,300                     126,403
Provision for possible loan losses                        5,000                       9,099
                                                     ----------                  ----------

Net interest income after provision for
      possible loan losses                              125,300                     117,304
Other income                                             34,520                      28,961
Other expenses                                           82,807                     114,004
                                                     ----------                  ----------
Income before income taxes                               77,013                      32,261
Income tax provision                                     26,950                      12,777
                                                     ----------                  ----------
Net income                                           $   50,063                  $   19,484
                                                     ==========                  ==========

SHARE DATA:
Weighted average common shares
      Outstanding (in thousands):
      Basic                                              39,829                      40,912
      Diluted                                            40,380                      42,234
Basic earnings per share                             $     1.26                  $     0.48
Diluted earnings per share                                 1.24                        0.46
Cash dividends per common share                            0.50                        0.39
Book value per common share                               10.70                       11.77

BALANCE SHEET SUMMARY:
Securities held to maturity                          $  629,133                  $  919,356
Securities available for sale                         2,580,667                   1,943,323
Loans                                                 3,537,792                   3,523,517
Total assets                                          7,226,088                   7,016,924
Deposits                                              4,997,836                   5,439,595
Stockholders' equity                                    422,989                     478,879

PERFORMANCE RATIOS:
Return on average assets                                   1.49%                       0.60%
Return on average equity                                  23.19                        7.74
Dividend payout                                           39.68                       81.25
Average equity to average assets                           6.41                        7.78
Net interest margin                                        4.15                        4.19

ASSET QUALITY RATIOS:
Allowance for possible loan losses to total
      loans                                                1.57%                       1.88%
Allowance for possible loan losses to
      non-performing loans                                  289                         110
Non-performing loans to total loans                        0.54                        1.72
Non-performing assets to total loans, plus
      other real estate                                    0.59                        1.99
Net charge-offs to average loans                           0.24                        0.59
</TABLE>



                                       11
<PAGE>   17
                   UPDATED SUMMARY FINANCIAL DATA OF JEFFBANKS

         The following is a summary of certain selected historical consolidated
financial data for JeffBanks as of and for the six months ended June 30, 1999
and 1998. This financial data should be read in conjunction with the financial
data for JeffBanks for the years 1994 through 1998, and as of the end of those
years, set forth on pages 12-14 of the joint proxy statement-prospectus. The
data presented as of and for the six months ended June 30, 1999 and 1998 comes
from JeffBanks' unaudited consolidated financial statements. JeffBanks'
unaudited consolidated financial statements as of and for the six months ended
June 30, 1999 and 1998 are incorporated by reference in this document. See
pages 6 - 7.

         In the opinion of JeffBanks' management, the unaudited data shown below
reflects all adjustments necessary for a fair presentation of that data. All
such adjustments were normal, recurring adjustments. Results for the six months
ended June 30, 1999 do not necessarily indicate the results that you should
expect for any other interim period or for the year as a whole.


                                       12
<PAGE>   18
<TABLE>
<CAPTION>
                                                                      At or for the Six Months ended June 30,
                                                                     -----------------------------------------
                                                                       1999                              1998
                                                                     ----------                     ----------
EARNINGS SUMMARY:                                                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                                  <C>                            <C>
Interest income                                                      $   62,455                     $   59,690
Interest expense                                                         31,087                         30,553
                                                                     ----------                     ----------
Net interest income                                                      31,368                         29,137
Provision for credit losses                                               2,985                          3,513
                                                                     ----------                     ----------

Net interest income after provision for credit
      losses                                                             28,383                         25,624
Other income                                                              8,084                          7,374
Other expense                                                            26,184                         27,567
                                                                     ----------                     ----------
Income before income taxes                                               10,283                          5,431
Income taxes                                                              2,152                          1,798
                                                                     ----------                     ----------
Net income                                                           $    8,131                     $    3,633
                                                                     ==========                     ==========

SHARE DATA:
Weighted average common shares
      Outstanding (in thousands):
      Basic                                                              10,517                         10,232
      Diluted                                                            11,010                         11,095
Basic earnings per share                                             $     0.77                     $     0.36
Diluted earnings per share                                                 0.74                           0.33
Cash dividends per common share                                            0.31                           0.18
Book value                                                                12.47                          12.11

BALANCE SHEET SUMMARY:
Securities held to maturity                                          $      675                     $      680
Securities available for sale                                           313,281                        338,521
Loans                                                                 1,358,900                      1,140,702
Total assets                                                          1,857,384                      1,696,577
Deposits                                                              1,384,423                      1,289,992
Stockholders' equity                                                    131,922                        124,397

PERFORMANCE RATIOS:
Return on average assets                                                   0.95%                          0.47%
Return on average equity                                                  12.30                           5.88
Dividend payout ratio                                                     38.16                          52.22
Average equity to average assets                                           7.76                           7.94
Net interest margin                                                        4.24                           4.13

ASSET QUALITY RATIOS:
Allowance for possible loan losses to total loans                          0.90%                          1.23%
Allowance for possible loan losses to
      non-performing loans                                                  117                            125
Non-performing loans to total loans                                        0.77                           0.99
Non-performing assets to total loans, plus other
      real estate                                                          0.94                           1.16
Net charge-offs to average loans                                           0.50                           0.69
</TABLE>


                                       13
<PAGE>   19
                  RECENT DEVELOPMENTS CONCERNING HUDSON UNITED

         Acquisition of Lyon Credit Corporation.

         On September 10, 1999, Hudson United Bank entered into an agreement to
purchase substantially all the assets of Lyon Credit Corporation. The
transaction is expected to close during the fourth quarter of 1999, and will
add approximately $350 million of project finance, equipment, and asset based
loans to Hudson United Bank's assets, along with loan production offices in
Stamford, CT, Atlanta, Dallas, Irvine, CA, Chicago, Houston, San Francisco, and
Portland, OR.

         Other Recent Developments

[A SUMMARY OF HUDSON UNITED THIRD QUARTER RESULTS WILL BE ADDED IF SUCH RESULTS
ARE PUBLICLY RELEASED PRIOR TO PRINTING]


                    RECENT DEVELOPMENTS CONCERNING JEFFBANKS

[A SUMMARY OF JEFFBANKS THIRD QUARTER RESULTS WILL BE ADDED IF SUCH RESULTS ARE
PUBLICLY RELEASED PRIOR TO PRINTING]




     STATUS OF REGULATORY APPROVALS ON THE JEFFBANKS-HUDSON UNITED MERGER

        Hudson United has applied to all necessary bank regulatory authorities
for approval of the Hudson United-JeffBanks merger. The Pennsylvania Department
of Banking has approved the Hudson United-JeffBanks merger, as well as the
merger of one of Jeffbanks' subsidiary banks, Jefferson Bank, into Hudson
United's subsidiary bank, Hudson United Bank. In addition, the Federal Reserve
Board has agreed to waive its approval requirement with respect to the merger
based upon the need for approval by the Federal Deposit Insurance Corporation.
As of the date of this document, we have not yet received the required
approvals of the FDIC and the New Jersey Department of Banking and Insurance.
While we do not know of any reason why we would not be able to obtain the
necessary approvals in a timely manner, we cannot be certain when or if we will
receive them. As of the date of this supplement, neither Hudson United nor Dime
has applied for any regulatory approvals for the Hudson United-Dime merger.


                                       14
<PAGE>   20
              UPDATED AND ADDITIONAL COMPARATIVE SHARE INFORMATION
                                AND MARKET PRICES

         The first table below presents, for the periods indicated, the high and
low closing prices per share of Hudson United common stock, JeffBanks common
stock and Dime common stock. The closing prices of Hudson United common stock
have been restated to give retroactive effect to stock dividends and stock
splits. The second table presents information concerning the last closing price
of Hudson United common stock, JeffBanks common stock and Dime common stock on
June 28, 1999, the last business day before the JeffBanks - Hudson United merger
was announced, on September 14, the last day before the Hudson United - Dime
merger agreement was announced, and on October __, 1999, a date shortly before
the date of this supplement. The second table also presents the equivalent value
of Hudson United common stock per JeffBanks share which is computed by
multiplying the last closing price of Hudson United common stock on the dates
indicated by the 0.95 exchange ratio in the JeffBanks - Hudson United merger
agreement. Hudson United common stock is listed on the New York Stock Exchange
under the symbol "HU", JeffBanks common stock is traded on the NASDAQ National
Market under the symbol "JEFF", and Dime common stock is traded on the New York
Stock Exchange under the symbol "DME." We urge you to obtain current market
quotations for Hudson United common stock, JeffBanks common stock and Dime
common stock.

<TABLE>
<CAPTION>
                              CLOSING SALE PRICE PER      CLOSING SALE PRICE PER      CLOSING SALE PRICE PER
                                  SHARE OF HUDSON           SHARE OF JEFFBANKS             SHARE OF DIME
                                UNITED COMMON STOCK            COMMON STOCK                COMMON STOCK
                              ----------------------      ----------------------      ----------------------
                                HIGH          LOW           HIGH          LOW           HIGH          LOW
                              ---------    ---------      ---------    ---------      ---------    ---------
<S>                           <C>          <C>            <C>          <C>            <C>          <C>
1997:
First Quarter                 $   25.03    $   21.44      $   16.86    $   15.14      $17.88       $14.63
Second Quarter                    27.57        20.86          17.10        16.05       19.00        14.88
Third Quarter                     31.11        26.16          23.03        16.95       21.75        17.00
Fourth Quarter                    37.99        30.05          28.80        20.40       30.25        21.06

1998:
First Quarter                 $   37.86    $   32.28      $   32.33    $   25.80       31.06        24.00
Second Quarter                    37.62        31.25          34.65        29.25       32.06        28.06
Third Quarter                     35.00        25.38          32.25        18.75       32.69        19.00
Fourth Quarter                    30.13        21.63          25.00        18.75       27.81        18.19

1999:
First Quarter                 $   34.25    $   29.75      $   22.25    $   19.63       27.06        23.19
Second Quarter                    36.00        30.63          28.94        20.00       24.44        20.06
Third Quarter                     33.75        28.31          30.75        26.13       21.56        16.56
Fourth Quarter (through
October __, 1999)
</TABLE>

<TABLE>
<CAPTION>
                                                                            EQUIVALENT VALUE
                                CLOSING SALE                                   OF HUDSON
                              PRICE PER SHARE         CLOSING SALE           UNITED COMMON           CLOSING SALE
                                 OF HUDSON           PRICE PER SHARE        STOCK PER SHARE         PRICE PER SHARE
                                  UNITED              OF JEFFBANKS            OF JEFFBANKS              OF DIME
                               COMMON STOCK           COMMON STOCK           COMMON STOCK            COMMON STOCK
                              ---------------        ---------------        ---------------         ----------------
<S>                           <C>                    <C>                    <C>                     <C>
DATE

June 28, 1999                   $  34.94                $  28.00               $ 33.19                  $  20.50
September 14, 1999              $  30.13                $  28.00               $ 28.62                  $  17.75
October __, 1999
</TABLE>


                                       15
<PAGE>   21
                     SUMMARY PRO FORMA FINANCIAL INFORMATION

         We present on this page certain pro forma unaudited combined condensed
financial information derived from the unaudited Pro Forma Financial Information
for the periods and at the dates indicated. The pro forma combined information
gives effect to the proposed mergers of Southern Jersey, JeffBanks and Dime,
each accounted for as a pooling-of-interests, as if the mergers had been
consummated for statement of income purposes on the first day of the applicable
periods and for balance sheet purposes on June 30, 1999. Information relative to
each individual merger is presented in the Pro Forma Financial Information,
which begins on the next page. This summary pro forma financial information is
based on the historical financial statements of Hudson United, Southern Jersey,
JeffBanks and Dime incorporated by reference herein. Hudson United's historical
earnings per share have been restated to give retroactive effect to stock
dividends and splits. The pro forma combined information does not include the
effect of Hudson United's pending acquisition of loans and deposits from Advest
Bank or its pending acquisition of the assets of Lyon Credit Corporation. We
have determined that the Advest and Lyon Credit acquisitions do not present
significant acquisitions in the context of the pro forma financial information.
The pro forma combined information does not include the effect of Dime's pending
acquisition of 28 branches of Key Bank, N.A. In addition, the pro forma combined
information as of June 30, 1999 does not include Dime's acquisition of
Citibank's auto financing unit, which was consummated after June 30, 1999.
Information regarding the acquisitions of certain assets and liabilities of Key
Bank and Citibank have not been included because these acquisitions do not
present significant acquisitions in the context of the pro forma financial
information and because separate financial statements for such assets and
liabilities are not prepared by the companies from which such assets and
liabilities were acquired or are to be acquired.

         The Summary Pro Forma Financial Information should be read in
conjunction with the Pro Forma Financial Information and the related notes
thereto beginning on the next page and the consolidated financial statements and
related notes incorporated by reference in this document. The Summary Pro Forma
Financial Information is not necessarily indicative of the actual financial
results that would have occurred had the mergers been consummated as of the
beginning of the periods for which the data is presented and should not be
construed as being representative of future periods. The summary pro forma
financial information does not include the effect of one-time merger related and
restructuring charges.

      SUMMARY PRO FORMA UNAUDITED COMBINED CONDENSED FINANCIAL INFORMATION
                    (In thousands, except for per share data)

<TABLE>
<CAPTION>
                                                               For the Six      For the Years Ended December 31,
                                                              Months Ended    ------------------------------------
                                                              June 30, 1999     1998         1997          1996
                                                              -------------   --------     --------       --------
<S>                                                           <C>             <C>          <C>            <C>
Net interest income before provision for
     possible loan losses                                        $443,120     $856,083     $809,606       $773,922
Provision for possible loan losses                                 24,545       67,607       73,442         70,060
Net interest income after provision for
     possible loan losses                                         418,575      788,476      736,164        703,862
Income before income taxes
     and extraordinary items                                      276,976      398,357      331,268        230,548
Income tax provision                                               99,451      130,463      124,099         78,988
Income before extraordinary items                                 177,525      267,894      207,169        151,560
Income before extraordinary items per share:
    Basic                                                            1.52         2.27         1.80           1.33
    Diluted                                                          1.50         2.22         1.74           1.27
</TABLE>

<TABLE>
<CAPTION>
                                                                  As of
                                                             June 30, 1999
                                                             -------------
<S>                                                          <C>
Total assets                                                  $30,965,672
Total deposits                                                 20,216,166
Total stockholders' equity                                      1,991,632
Book value per common share                                         16.96
</TABLE>


                                       16
<PAGE>   22
                         PRO FORMA FINANCIAL INFORMATION

         Presented on the following page is a pro forma unaudited combined
condensed balance sheet of Hudson United, Southern Jersey, JeffBanks and Dime at
June 30, 1999, giving effect to each merger as if it had been consummated at
such date. Also presented are the pro forma unaudited combined condensed
statements of income for the six-month period ended June 30, 1999 and for the
years ended December 31, 1998, 1997 and 1996. The unaudited pro forma financial
information is based on the historical financial statements of Hudson United,
Southern Jersey, JeffBanks and Dime after giving effect to each merger under the
pooling-of-interests method of accounting and based upon the assumptions and
adjustments contained in the accompanying notes to pro forma financial
information.

         The unaudited pro forma financial information has been prepared by
Hudson United's management based upon the historical financial statements and
related notes thereto of Hudson United, Southern Jersey, JeffBanks and Dime,
which are incorporated herein by reference. The unaudited pro forma financial
information should be read in conjunction with those historical financial
statements and notes. The pro forma combined information does not include the
effect of Hudson United's pending acquisition of loans and deposits from Advest
Bank or its pending acquisition of the assets of Lyons Credit Corporation. We
have determined that the Advest and Lyon Credit acquisitions do not present
significant acquisitions in th context of the pro forma financial information.
The pro forma combined information does not include the effect of Dime's pending
acquisition of 28 branches of Key Bank, N.A. In addition, the pro forma combined
information as of June 30, 1999 does not include Dime's acquisition of
Citibank's auto financing unit, which was consummated after June 30, 1999.
Information regarding the acquisitions of certain assets and liabilities of Key
Bank and Citibank have not been included because these acquisitions do not
present significant acquisitions in the context of the pro forma financial
information and because separate financial statements for such assets and
liabilities are not prepared by the companies from which such assets and
liabilities were acquired or are to be acquired.

         The pro forma financial data is not necessarily indicative of the
actual financial results that would have occurred had the mergers been
consummated as of the beginning of the periods for which the data is presented
and should not be construed as being representative of future periods.


                                       17
<PAGE>   23
PRO FORMA UNAUDITED COMBINED CONDENSED BALANCE SHEET
AS OF JUNE 30, 1999
($ in thousands, except per share data)

<TABLE>
<CAPTION>
                                                                   Southern          Pro forma        Pro forma
Assets                                         Hudson United        Jersey          Adjustments        Combined          JeffBanks
- ------                                         -------------     ------------      ------------      ------------      ------------
<S>                                            <C>               <C>               <C>               <C>               <C>
Cash and due from banks                        $    192,918      $     20,625      $       --        $    213,543      $     52,207
Federal funds sold and other investments              8,201            50,050                              58,251            79,100
Securities                                        3,209,800           114,148                           3,323,948           313,956
Loans held for sale                                    --                --                                  --              19,951
Loans                                             3,537,792           242,194                           3,779,986         1,338,949
Less: Allowance for loan losses                     (55,680)           (9,182)                            (64,862)          (12,203)
                                               ------------      ------------      ------------      ------------      ------------
 Total loans                                      3,482,112           233,012              --           3,715,124         1,326,746
                                               ------------      ------------      ------------      ------------      ------------
Other assets                                        227,153            34,582                             261,735            60,342
Intangibles, net of amortization                    105,904              --                               105,904             5,082
                                               ------------      ------------      ------------      ------------      ------------
  Total Assets                                 $  7,226,088      $    452,417      $       --        $  7,678,505      $  1,857,384
                                               ============      ============      ============      ============      ============

Liabilities and Stockholders' Equity
- ------------------------------------
Deposits                                       $  4,997,836      $    419,109      $       --        $  5,416,945      $  1,384,423
Borrowings                                        1,504,399              --                             1,504,399           259,239
Other liabilities                                   100,864             5,151                             106,015            24,580
                                               ------------      ------------      ------------      ------------      ------------
                                                  6,603,099           424,260              --           7,027,359         1,668,242
Subordinated debt                                   100,000              --                               100,000            31,920
Capital Trust Securities                            100,000              --                               100,000            25,300
                                               ------------      ------------      ------------      ------------      ------------
  Total Liabilities                               6,803,099           424,260              --           7,227,359         1,725,462
                                               ------------      ------------      ------------      ------------      ------------
Stockholders' Equity:
  Common stock                                       72,246             2,184               383            74,813            10,583
  Additional paid in capital                        264,468             3,259            (4,207)          263,520            98,177
  Retained earnings                                 144,176            29,095              --             173,271            26,961
  Treasury stock                                    (36,504)           (3,824)            3,824           (36,504)             --
  Employee stock awards & ESOP shares                (3,387)             --                --              (3,387)             --
  Accumulated other comprehensive loss              (18,010)           (2,557)             --             (20,567)           (3,799)
                                               ------------      ------------      ------------      ------------      ------------
    Total Stockholders' Equity                      422,989            28,157              --             451,146           131,922
                                               ------------      ------------      ------------      ------------      ------------
  Total Liabilities and Stockholders' Equity   $  7,226,088      $    452,417      $       --        $  7,678,505      $  1,857,384
                                               ============      ============      ============      ============      ============



Common shares outstanding (in thousands)             39,532             1,128                              40,976            10,583

Book value per common share                    $      10.70      $      24.96                        $      11.01      $      12.47
</TABLE>

<TABLE>
<CAPTION>
                                                 Pro forma        Pro forma                            Pro forma         Pro forma
Assets                                          Adjustments        Combined            Dime          Adjustments         Combined
- ------                                         ------------      ------------      ------------      ------------      ------------
<S>                                            <C>               <C>               <C>               <C>               <C>
Cash and due from banks                        $       --        $    265,750      $    300,543      $       --        $    566,293
Federal funds sold and other investments                              137,351            12,588                             149,939
Securities                                                          3,637,904         3,826,738                           7,464,642
Loans held for sale                                                    19,951         2,512,648                           2,532,599
Loans                                                               5,118,935        12,711,182                          17,830,117
Less: Allowance for loan losses                                       (77,065)         (121,381)                           (198,446)
                                               ------------      ------------      ------------      ------------      ------------
 Total loans                                           --           5,041,870        12,589,801              --          17,631,671
                                               ------------      ------------      ------------      ------------      ------------
Other assets                                                          322,077         1,884,442                           2,206,519
Intangibles, net of amortization                                      110,986           303,023                             414,009
                                               ------------      ------------      ------------      ------------      ------------
  Total Assets                                 $       --        $  9,535,889      $ 21,429,783      $       --        $ 30,965,672
                                               ============      ============      ============      ============      ============

Liabilities and Stockholders' Equity
- ------------------------------------
Deposits                                       $       --        $  6,801,368      $ 13,414,798      $       --        $ 20,216,166
Borrowings                                                          1,763,638         5,916,453                           7,680,091
Other liabilities                                                     130,595           400,995            84,879           616,469
                                               ------------      ------------      ------------      ------------      ------------
                                                       --           8,695,601        19,732,246            84,879        28,512,726
Subordinated debt                                                     131,920            51,886                             183,806
Capital Trust Securities                                              125,300           152,208                             277,508
                                               ------------      ------------      ------------      ------------      ------------
  Total Liabilities                                    --           8,952,821        19,936,340            84,879        28,974,040
                                               ------------      ------------      ------------      ------------      ------------
Stockholders' Equity:
  Common stock                                        7,293            92,689             1,203           (92,717)            1,175
  Additional paid in capital                         (7,293)          354,404         1,165,759          (124,267)        1,395,896
  Retained earnings                                    --             200,232           561,428           (94,000)          667,660
  Treasury stock                                       --             (36,504)         (180,480)          216,984              --
  Employee stock awards & ESOP shares                  --              (3,387)           (5,825)            9,121               (91)
  Accumulated other comprehensive loss                 --             (24,366)          (48,642)             --             (73,008)
                                               ------------      ------------      ------------      ------------      ------------
    Total Stockholders' Equity                         --             583,068         1,493,443           (84,879)        1,991,632
                                               ------------      ------------      ------------      ------------      ------------
  Total Liabilities and Stockholders' Equity   $       --        $  9,535,889      $ 21,429,783      $       --        $ 30,965,672
                                               ============      ============      ============      ============      ============



Common shares outstanding (in thousands)                               51,030           113,539                             117,450

Book value per common share                                      $      11.43      $      13.15                        $      16.96
</TABLE>

See notes to pro forma financial information.


                                       18
<PAGE>   24
PRO FORMA UNAUDITED COMBINED CONDENSED STATEMENTS OF INCOME
FOR THE SIX MONTHS ENDED JUNE 30, 1999
($ in thousands, except per share data)

<TABLE>
<CAPTION>
                                                   Hudson     Southern    Pro Forma               Pro Forma               Pro Forma
                                                   United      Jersey      Combined   JeffBanks    Combined      Dime      Combined
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
<S>                                              <C>         <C>          <C>         <C>         <C>         <C>         <C>
Interest on loans                                $  142,808  $    9,463   $  152,271  $   52,816  $  205,087  $  547,495  $  752,582
Interest on securities                               89,035       3,252       92,287       9,095     101,382     126,360     227,742
Other interest income                                   526       1,784        2,310         544       2,854         776       3,630
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
  Total Interest Income                             232,369      14,499      246,868      62,455     309,323     674,631     983,954
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
Interest on deposits                                 64,185       8,435       72,620      23,213      95,833     236,353     332,186
Interest on borrowings                               37,884        --         37,884       7,874      45,758     162,890     208,648
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
  Total Interest Expense                            102,069       8,435      110,504      31,087     141,591     399,243     540,834
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
Net Interest Income before
 provision for loan loss                            130,300       6,064      136,364      31,368     167,732     275,388     443,120
Provision for loan loss                               5,000       1,060        6,060       2,985       9,045      15,500      24,545
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
Net Interest Income after
  provision for loan loss                           125,300       5,004      130,304      28,383     158,687     259,888     418,575
Noninterest income                                   34,520       2,274       36,794       8,084      44,878     301,733     346,611
Noninterest expense                                  82,807       7,732       90,539      26,184     116,723     371,487     488,210
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
Income (loss) before income taxes
  and extraordinary items                            77,013        (454)      76,559      10,283      86,842     190,134     276,976
Income tax provision                                 26,950        --         26,950       2,152      29,102      70,349      99,451
                                                 ----------  ----------   ----------  ----------  ----------  ----------  ----------
Income (loss) before extraordinary items         $   50,063  $     (454)  $   49,609  $    8,131  $   57,740  $  119,785  $  177,525
                                                 ==========  ==========   ==========  ==========  ==========  ==========  ==========

Income (Loss) Before Extraordinary Items Per
Share:
  Basic                                          $     1.26  $    (0.40)  $     1.20  $     0.77  $     1.13  $     1.08  $     1.52
  Diluted                                        $     1.24  $    (0.40)  $     1.19  $     0.74  $     1.10  $     1.06  $     1.50

Weighted Average Common Shares:
  (in thousands)
  Basic                                              39,829       1,127       41,272      10,517      51,263     111,470     116,473
  Diluted                                            40,380       1,127       41,823      11,010      52,283     112,841     118,295
</TABLE>

See notes to pro forma financial information.


                                       19
<PAGE>   25
PRO FORMA UNAUDITED COMBINED CONDENSED STATEMENTS OF INCOME
FOR THE YEAR ENDED DECEMBER 31, 1998
($ in thousands, except per share data)

<TABLE>
<CAPTION>
                                                Hudson     Southern    Pro Forma               Pro Forma               Pro Forma
                                                United      Jersey      Combined    JeffBanks   Combined      Dime      Combined
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
<S>                                           <C>         <C>          <C>         <C>         <C>         <C>         <C>
Interest on loans                             $  298,311  $   24,624   $  322,935  $   99,924  $  422,859  $1,159,364  $1,582,223
Interest on securities                           162,783       5,983      168,766      21,025     189,791     255,719     445,510
Other interest income                              7,453       2,676       10,129       2,544      12,673       5,802      18,475
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
  Total Interest Income                          468,547      33,283      501,830     123,493     625,323   1,420,885   2,046,208
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
Interest on deposits                             161,077      18,400      179,477      48,858     228,335     545,827     774,162
Interest on borrowings                            53,276        --         53,276      14,862      68,138     347,825     415,963
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
  Total Interest Expense                         214,353      18,400      232,753      63,720     296,473     893,652   1,190,125
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
Net Interest Income before
 provision for loan loss                         254,194      14,883      269,077      59,773     328,850     527,233     856,083
Provision for loan loss                           14,374      15,270       29,644       5,963      35,607      32,000      67,607
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
Net Interest Income (Loss)
  after provision for loan loss                  239,820        (387)     239,433      53,810     293,243     495,233     788,476
Noninterest income                                33,299       3,509       36,808      15,215      52,023     525,030     577,053
Noninterest expense                              232,096      15,842      247,938      53,593     301,531     665,641     967,172
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
Income (loss) before income taxes
  and extraordinary items                         41,023     (12,720)      28,303      15,432      43,735     354,622     398,357
Income tax provision (benefit)                    17,872      (4,888)      12,984       4,000      16,984     113,479     130,463
                                              ----------  ----------   ----------  ----------  ----------  ----------  ----------
Income (loss) before extraordinary items      $   23,151  $   (7,832)  $   15,319  $   11,432  $   26,751  $  241,143  $  267,894
                                              ==========  ==========   ==========  ==========  ==========  ==========  ==========

Income (Loss) Before Extraordinary Items Per
Share:
  Basic                                       $     0.57  $    (6.95)  $     0.36  $     1.11  $     0.52  $     2.13  $     2.27
  Diluted                                     $     0.56  $    (6.95)  $     0.36  $     1.04  $     0.50  $     2.09  $     2.22

Weighted Average Common Shares:
  (in thousands)
  Basic                                           40,640       1,127       42,083      10,301      51,869     113,452     118,238
  Diluted                                         41,696       1,127       43,139      10,956      53,547     115,153     120,912
</TABLE>


See notes to pro forma financial information.


                                       20
<PAGE>   26
PRO FORMA UNAUDITED COMBINED CONDENSED STATEMENTS OF INCOME
FOR THE YEAR ENDED DECEMBER 31, 1997
($ in thousands, except per share data)

<TABLE>
<CAPTION>
                                          Hudson      Southern     Pro Forma                 Pro Forma                 Pro Forma
                                          United       Jersey       Combined    JeffBanks     Combined      Dime        Combined
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
<S>                                     <C>          <C>           <C>          <C>          <C>          <C>          <C>
Interest on loans                       $  306,800   $   25,834    $  332,634   $   87,794   $  420,428   $  919,890   $1,340,318
Interest on securities                     159,620        6,123       165,743       18,895      184,638      430,555      615,193
Other interest income                        4,795        1,843         6,638        3,931       10,569       32,370       42,939
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
  Total Interest Income                    471,215       33,800       505,015      110,620      615,635    1,382,815    1,998,450
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
Interest on deposits                       175,645       17,159       192,804       40,776      233,580      559,359      792,939
Interest on borrowings                      40,635         --          40,635       14,876       55,511      340,394      395,905
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
  Total Interest Expense                   216,280       17,159       233,439       55,652      289,091      899,753    1,188,844
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
Net Interest Income before
 provision for loan loss                   254,935       16,641       271,576       54,968      326,544      483,062      809,606
Provision for loan loss                     12,775        7,967        20,742        3,700       24,442       49,000       73,442
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
Net Interest Income after
  provision for loan loss                  242,160        8,674       250,834       51,268      302,102      434,062      736,164
Noninterest income                          54,180        3,043        57,223       13,203       70,426      145,291      215,717
Noninterest expense                        181,308       11,590       192,898       46,570      239,468      381,145      620,613
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
Income before income taxes
  and extraordinary items                  115,032          127       115,159       17,901      133,060      198,208      331,268
Income tax provision  (benefit)             45,205         (710)       44,495        4,570       49,065       75,034      124,099
                                        ----------   ----------    ----------   ----------   ----------   ----------   ----------
Income before extraordinary items       $   69,827   $      837    $   70,664   $   13,331   $   83,995   $  123,174   $  207,169
                                        ==========   ==========    ==========   ==========   ==========   ==========   ==========


Income Before Extraordinary Items Per
Share:
  Basic                                 $     1.67   $     0.75    $     1.64   $     1.33   $     1.59   $     1.15   $     1.80
  Diluted                               $     1.60   $     0.73    $     1.57   $     1.25   $     1.52   $     1.13   $     1.74

Weighted Average Common Shares:
  (in thousands)
  Basic                                     41,362        1,120        42,808        9,660       51,985      106,585      114,337
  Diluted                                   43,635        1,148        45,081       10,317       54,882      108,613      118,421
</TABLE>


See notes to pro forma financial information.


                                       21
<PAGE>   27
PRO FORMA UNAUDITED COMBINED CONDENSED STATEMENT OF INCOME
FOR THE YEAR ENDED DECEMBER 31, 1996
($ in thousands, except per share data)

<TABLE>
<CAPTION>
                                     Hudson       Southern     Pro forma                   Pro forma                   Pro forma
                                     United        Jersey       Combined     JeffBanks      Combined        Dime        Combined
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
<S>                                <C>           <C>           <C>           <C>           <C>           <C>           <C>
Interest on loans                  $  287,671    $   22,441    $  310,112    $   86,145    $  396,257    $  784,109    $1,180,366
Interest on securities                150,856         6,802       157,658        18,548       176,206       540,252       716,458
Other interest income                   3,987         1,147         5,134         2,407         7,541        26,337        33,878
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
  Total Interest Income               442,514        30,390       472,904       107,100       580,004     1,350,698     1,930,702
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
Interest on deposits                  173,521        14,870       188,391        40,248       228,639       531,216       759,855
Interest on borrowings                 27,045          --          27,045        11,693        38,738       358,187       396,925
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
  Total Interest Expense              200,566        14,870       215,436        51,941       267,377       889,403     1,156,780
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
Net Interest Income before
  provision for loan losses           241,948        15,520       257,468        55,159       312,627       461,295       773,922
Provision for loan loss                17,140         1,805        18,945        10,115        29,060        41,000        70,060
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
Net Interest Income after
  provision for loan losses           224,808        13,715       238,523        45,044       283,567       420,295       703,862
Noninterest income                     40,257         3,246        43,503        10,496        53,999        85,978       139,977
Noninterest expense                   204,679        10,357       215,036        46,222       261,258       352,033       613,291
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
Income before income taxes             60,386         6,604        66,990         9,318        76,308       154,240       230,548
Income tax provision                   23,490         1,276        24,766         4,238        29,004        49,984        78,988
                                   ----------    ----------    ----------    ----------    ----------    ----------    ----------
 Net Income                        $   36,896    $    5,328    $   42,224    $    5,080    $   47,304    $  104,256    $  151,560
                                   ==========    ==========    ==========    ==========    ==========    ==========    ==========

Net Income Per Share:
  Basic                            $     0.85    $     4.77    $     0.94    $     0.56    $     0.89    $     1.00    $     1.33
  Diluted                          $     0.82    $     4.67    $     0.91    $     0.53    $     0.85    $     0.96    $     1.27

Weighted Average Common Shares:
  (in thousands)
  Basic                                42,402         1,118        43,840         8,775        52,176       103,742       112,865
  Diluted                              44,990         1,141        46,428         9,247        55,213       109,097       119,035
</TABLE>


See notes to pro forma financial information.


                                       22
<PAGE>   28
Notes to Pro Forma Financial Information

(1)      The pro forma information assumes the mergers were consummated as of
         June 30, 1999 for the pro forma unaudited combined condensed balance
         sheet and as of the beginning of each of the periods indicated for the
         pro forma unaudited combined condensed statements of income. The pro
         forma information presented is not necessarily indicative of the
         results of operations or the combined financial position that would
         have resulted had the mergers been consummated at the beginning of the
         periods indicated, nor is it necessarily indicative of the results of
         operations in future periods or the future financial position of the
         combined entities.

(2)      It is assumed that the merger with Southern Jersey will be accounted
         for on a pooling-of-interests basis, and accordingly, the related pro
         forma adjustments herein reflect, where applicable, an exchange ratio
         of 1.26 shares of Hudson United common stock for each of the 1,128,081
         shares of Southern Jersey common stock which were outstanding at June
         30, 1999.

         Following consummation of the merger, it is anticipated that Hudson
         United will sell substantially all of the nonperforming assets and
         certain other identified loans of Southern Jersey aggregating
         approximately $55 million and take a related charge of up to $25
         million to write these assets down to their estimated realizable value
         based upon an accelerated sale process. Anticipated cost savings net of
         expected merger-related expense and restructuring charges are not
         expected to be material and therefore the pro forma financial
         information does not give effect to these items.

         The pro forma financial information was adjusted for the Southern
         Jersey merger by the (i) addition of 1,421,382 shares of Hudson United
         common stock with a stated value of $1.778 per share amounting to
         $2,527,217; (ii) elimination of 1,307,683 shares of Southern Jersey
         common stock with a stated value of $1.67 per share amounting to
         $2,183,831; (iii) addition of 22,620 shares of Hudson United common
         stock amounting to $40,218 in exchange for Southern Jersey's stock
         options; (iv) elimination of 179,602 shares of Southern Jersey common
         stock held in Southern Jersey's treasury at a cost of $3,823,801.

(3)      It is assumed that the merger with JeffBanks will be accounted for on a
         pooling-of-interests basis, and accordingly, the related pro forma
         adjustments herein reflect, where applicable, an exchange ratio of 0.95
         shares of Hudson United common stock for each of the 10,583,209 shares
         of JeffBanks common stock which were outstanding at June 30, 1999.

         Anticipated cost savings net of expected merger-related expense and
         restructuring charges are not expected to be material and therefore the
         pro forma financial information does not give effect to these items.

         The pro forma financial information was adjusted for the JeffBanks
         merger by the (i) addition of 10,054,049 shares of Hudson United common
         stock with a stated value of $1.778 per share amounting to $17,876,099;
         (ii) elimination of 10,583,209 shares of JeffBanks common stock with a
         par value of $1.00 per share amounting to $10,583,209.


(4)      It is assumed that the merger with Dime will be accounted for on a
         pooling-of-interests basis, and accordingly, the related pro forma
         adjustments herein reflect, where applicable, an exchange ratio of
         0.585 shares of Dime United common stock for each of the 113,539,009
         shares of Dime common stock which were outstanding at June 30, 1999.

         Anticipated cost savings approximate $78 million and are expected to be
         75% phased-in within the first twelve months of closing. Merger-related
         expense and restructuring charges are anticipated to be


                                       23
<PAGE>   29
         approximately $136 million pre-tax, $94 million after tax, comprised of
         systems, employee, occupancy, professional and other costs and are
         presented only in the pro forma unaudited combined condensed balance
         sheet.

         The pro forma financial information was adjusted for the Dime merger by
         the (i) issuance of 117,450,270 shares of the new Dime United common
         stock with a par value of $.01 per share amounting to $1,174,503; (ii)
         elimination of 51,029,949 shares of Hudson United common stock with a
         stated value of $1.778 per share amounting to $90,731,249; (iii)
         elimination of 113,539,009 shares of Dime common stock with a par value
         of $.01 per share amounting to $1,135,390; (iv) elimination of
         1,101,306 shares of Hudson United common stock held in Hudson United's
         treasury at a cost of $36,504,000 with a stated value of $1.778 per
         share amounting to $1,958,122; (v) elimination of 6,713,450 shares of
         Dime common stock held in Dime's treasury at a cost of $180,480,069
         with a par value of $.01 amounting to $67,135.

(5)      Earnings per share data has been computed based on the combinned
         historical income before extraordinary items applicable to common
         shareholders or net income applicable to common shareholders of Dime
         United using historical weighted average shares outstanding for the
         given period and the common stock assumed to be issued in connection
         with the mergers.

(6)      The pro forma information presented above does not reflect Hudson
         United's pending acquisition of loans and deposits from Advest Bank or
         its pending acquisition of the assets of Lyon Credit Corporation. We
         have determined that the Advest and Lyon Credit acquisition do not
         present significant acquisitions in the context of the pro forma
         financial information. For information about Lyon Credit, see "Recent
         Developments Concerning Hudson United" on page 14 of this supplement.
         For information about Advest, see "Recent Development" on pages 20-22
         of the proxy statement prospectus. The pro forma combined information
         does not include the effect of Dime's pending acquisition of 28
         branches of Key Bank, N.A. In addition, the pro forma combined
         information as of June 30, 1999 does not include Dime's acquisition
         of Citibank's auto financing unit, which was consummated after June
         30, 1999. Information regarding the acquisitions of certain assets
         and liabilities of Key Bank and Citibank have not been included
         because these acquisitions do not present significant acquisitions in
         the context of the pro forma financial information and because
         seperate financial statements for such assets and liabilities are not
         prepared by the companies from which such assets and liabilities were
         acquired or are to be acquired.


                                       24
<PAGE>   30
               INFORMATION ABOUT THE RECONVENED JEFFBANKS MEETING

DATE, TIME AND PLACE

         The special meeting of JeffBanks shareholders, originally scheduled for
October 1, 1999, was adjourned on that date without any business being conducted
at the meeting before adjournment. The Board of Directors of JeffBanks has
determined to reconvene the adjourned meeting at the following date, time and
place:

              ___ _.m.
              November __, 1999
              The Rittenhouse Hotel
              210 West Rittenhouse Square
              Philadelphia, Pennsylvania 19103

NO CHANGE IN RECORD DATE

         The JeffBanks Board of Directors originally fixed the close of business
on August 10, 1999 as the record date for the JeffBanks meeting. This record
date has not been changed. Only holders of record of JeffBanks common stock at
that time are entitled to get notice of the meeting and to vote at the meeting.
On the record date, there were 10,563,947 shares of JeffBanks common stock
outstanding. Each of those shares will be entitled to one vote on each matter
properly submitted to the meeting.

REQUIRED VOTE

         The Hudson United - JeffBanks merger cannot be completed without
JeffBanks shareholder approval. Approval and adoption of the Hudson United -
JeffBanks merger agreement requires the affirmative vote of a majority of the
votes cast at the JeffBanks meeting either in person or by proxy, provided a
quorum (a majority of JeffBanks' outstanding shares) is present. The required
JeffBanks shareholder vote is based on the number of shares which are actually
voted, rather than the total number of outstanding shares of JeffBanks common
stock. Thus, if you abstain from voting or if you don't submit a yellow proxy
card and don't vote in person at the reconvened JeffBanks meeting, your action
will have no effect. Also, broker non-votes will have no effect.

NEW PROXY CARDS

         Because of the significance of the proposed Hudson United - Dime
merger, Hudson United and JeffBanks determined that proxies voted prior to
distribution of this supplement should not be accepted and new proxies should be
solicited. THE WHITE PROXY CARDS ENCLOSED WITH THE PROXY STATEMENT-PROSPECTUS
DATED AUGUST 13, 1999 WILL NOT BE ACCEPTED AT THE JEFFBANKS SPECIAL MEETING.
ACCORDINGLY, YOUR SHARES WILL BE VOTED AT THE MEETING ONLY IF YOU SIGN AND
RETURN THE ENCLOSED YELLOW PROXY CARD OR VOTE PERSONALLY AT THE MEETING. We urge
you to execute, date and return the enclosed yellow proxy card in the enclosed
postage-paid envelope as soon as possible to ensure that your shares will be
voted at the reconvened special meeting. You should not send in certificates for
your JeffBanks shares at this time.


                                       25
<PAGE>   31
             INFORMATION ABOUT THE RECONVENED HUDSON UNITED MEETING

DATE, TIME AND PLACE

         The special meeting of Hudson United shareholders, originally scheduled
for September 30, 1999, was adjourned on that date without any business being
conducted at the meeting prior to adjournment. The Board of Directors of Hudson
United has determined to reconvene the adjourned meeting at the following date,
time and place:

              ___ _.m.
              November __, 1999
              The Sheraton Crossroads
              Route 17 North
              Mahwah, New Jersey 07495

NO CHANGE IN RECORD DATE

         The Hudson United Board of Directors originally fixed 3:00 p.m. on
August 13, 1999 as the record date for the Hudson United meeting. This record
date has not been changed. Only holders of record of Hudson United common stock
at that time are entitled to get notice of the meeting and to vote at the
meeting. On the record date, there were 38,924,413 shares of Hudson United
common stock outstanding. Each of those shares will be entitled to one vote on
each matter properly submitted to the meeting.

REQUIRED VOTE

         The Hudson United - JeffBanks merger cannot be completed without Hudson
United shareholder approval. A majority of the shares of Hudson United common
stock represented and voting at the Hudson United meeting, in person or by
proxy, must vote affirmatively in order to approve the Hudson United - JeffBanks
merger agreement. The required Hudson United shareholder vote is based on the
number of shares which are actually voted, rather than the total number of
outstanding shares of Hudson United common stock. Thus, if you abstain from
voting or if you don't submit a blue proxy card and don't vote in person at the
reconvened Hudson United meeting, your action will have no effect. Also, broker
non-votes will have no effect.

NEW PROXY CARDS

         Because of the significance of the proposed Hudson United - Dime
merger, Hudson United and JeffBanks determined that proxies voted prior to
distribution of this supplement should not be accepted and new proxies should be
solicited. THE WHITE PROXY CARDS ENCLOSED WITH THE PROXY STATEMENT-PROSPECTUS
DATED AUGUST 13, 1999 WILL NOT BE ACCEPTED AT THE SPECIAL MEETING. ACCORDINGLY,
YOUR SHARES WILL BE VOTED AT THE MEETING ONLY IF YOU SIGN AND RETURN THE
ENCLOSED BLUE PROXY CARD OR VOTE PERSONALLY AT THE MEETING. We urge you to
execute, date and return the enclosed blue proxy card in the enclosed
postage-paid envelope as soon as possible to ensure that your shares will be
voted at the reconvened special meeting.


                                       26
<PAGE>   32
                                  OTHER MATTERS

         As of the date of this supplement, the JeffBanks Board of Directors
knows of no other matters to be presented for action by the shareholders at the
JeffBanks meeting. If any other matters are properly presented, however, it is
the intention of the persons named in the enclosed proxy to vote in accordance
with their best judgment on such matters.

         As of the date of this supplement, the Hudson United Board of Directors
knows of no other matters to be presented for action by the shareholders at the
Hudson United meeting. If any other matters are properly presented, however, it
is the intention of the persons named in the enclosed proxy to vote in
accordance with their best judgment on such matters.

                                     EXPERTS

         The consolidated financial statements of Hudson United as of December
31, 1998 and 1997 and for each of the years in the three-year period ended
December 31, 1998 have been incorporated by reference in this proxy
statement-prospectus and this supplement and have been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their reports with
respect thereto, and are included herein in reliance upon the authority of said
firm as experts in accounting and auditing in giving said reports.

         The consolidated financial statements of JeffBanks as of December 31,
1998 and 1997 and for each of the three years in the period ended December 31,
1998, included as exhibit 99.4 to Hudson United's Current Report on Form 8-K
filed October 5, 1999, and thereby incorporated by reference in the joint proxy
statement-prospectus and this supplement, have been audited by Grant Thornton
LLP, independent certified public accountants, whose report thereon appears
therein, and in reliance upon such report of Grant Thornton given upon the
authority of such firm as experts in accounting and auditing.

         The consolidated financial statements of Southern Jersey as of December
31, 1998 and 1997 and for each of the years in the three-year period ended
December 31, 1998, included as exhibit 99.7 to Hudson United's Current
Report on Form 8-K filed October 5, 1999, and thereby incorporated by reference
in the proxy statement-prospectus, this supplement and elsewhere in
the registration statement, have been audited by Athey & Company, independent
public accountants, and Belfint, Lyons & Shuman, P.A., as indicated in their
reports with respect thereto, and are included in the proxy
statement-prospectus, this supplement and the registration statement in reliance
upon the authority of such firms as experts in accounting and auditing in giving
said reports.

         The consolidated financial statements of Dime and its subsidiaries as
of December 31, 1998 and 1997, and for each of the years in the three-year
period ended December 31, 1998, included in Dime's 1998 Annual Report on Form
10-K and reproduced as exhibit 99.1 to Hudson United's Current Report on
Form 8-K filed October 5, 1999 have been incorporated by reference herein
and in the registration statement and this supplement in reliance upon the
report of KPMG LLP, independent certified public accountants, included in
Dime's 1998 Annual Report on Form 10-K and incorporated by reference herein, and
upon the authority of said firm as experts in accounting and auditing.


                                       27
<PAGE>   33
                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS


ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         (i) LIMITATION OF LIABILITY OF DIRECTORS AND OFFICERS. Section
14A:2-7(3) of the New Jersey Business Corporation Act permits a corporation to
provide in its Certificate of Incorporation that a director or officer shall not
be personally liable to the corporation or its shareholders for breach of any
duty owed to the corporation or its shareholders, except that such provision
shall not relieve a director or officer from liability for any breach of duty
based upon an act or omission (a) in breach of such person's duty of loyalty to
the corporation or its shareholders, (b) not in good faith or involving a
knowing violation of law or (c) resulting in receipt by such person of any
improper personal benefit. Hudson United's Certificate of Incorporation includes
limitations on the liability of officers and directors to the fullest extent
permitted by New Jersey law.

         (ii) INDEMNIFICATION OF DIRECTORS, OFFICERS, EMPLOYEES AND AGENTS.
Under Article X of its Certificate of Incorporation, Hudson United must, to the
fullest extent permitted by law, indemnify its directors, officers, employees
and agents. Section 14A:3-5 of the New Jersey Business Corporation Act provides
that a corporation may indemnify its directors, officers, employees and agents
against judgments, fines, penalties, amounts paid in settlement and expenses,
including attorneys' fees, resulting from various types of legal actions or
proceedings if the actions of the party being indemnified meet the standards of
conduct specified therein. Determinations concerning whether or not the
applicable standard of conduct has been met can be made by (a) a disinterested
majority of the Board of Directors, (b) independent legal counsel, or (c) an
affirmative vote of a majority of shares held by the shareholders. No
indemnification is permitted to be made to or on behalf of a corporate director,
officer, employee or agent if a judgment or other final adjudication adverse to
such person establishes that his acts or omissions (A) were in breach of his
duty of loyalty to the corporation or its shareholders, (B) were not in good
faith or involved a knowing violation of law or (C) resulted in receipt by such
person of an improper personal benefit.

         (iii) INSURANCE. Hudson United's directors and officers are insured
against losses arising from any claim against them such as wrongful acts or
omissions, subject to certain limitations.


ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

A.  Exhibits

Exhibit
Number            Description

2(a)     Agreement and Plan of Merger, dated as of June 28, 1999, by and among
         Hudson United Bancorp ("HUB"), Hudson United Bank, JeffBanks, Inc.
         ("JEFFBANKS") Jefferson Bank and Jefferson Bank of New Jersey. *

2(b)     Stock Option Agreement, dated as of June 28, 1999, by and between HUB
         and JeffBanks. *

2(c)     Agreement and Plan of Merger dated as of September 15, 1999 between HUB
         and Dime Bancorp, Inc. ("DIME").**

2(d)     Stock Option Agreement, dated as of September 16, 1999 between Dime and
         HUB.**

2(e)     Stock Option Agreement, dated as of September 16, 1999 between HUB and
         Dime.**

5        Opinion of Pitney, Hardin, Kipp & Szuch as to the legality of the
         securities to be registered.*

8        Opinion of Pitney, Hardin, Kipp & Szuch as to certain tax consequences
         of the Merger.*

23(a)    Consent of Grant Thornton LLP.
<PAGE>   34
23(b)    Consent of Arthur Andersen LLP.

23(c)    Consent of Athey & Company.

23(d)    Consent of Belfint, Lyons & Shuman, P.A.

23(e)    Consent of KPMG LLP.

23(f)    Consent of Pitney, Hardin, Kipp & Szuch (included in Exhibits 5 and 8
         hereto).*

24       Power of Attorney

99(a)    Form of revised Hudson United Proxy Card

99(b)    Form of revised JeffBanks Proxy Card

- -------------------------
*        Previously filed.

**       Incorporated by reference to HUB's Current Report on Form 8-K filed
         September 24, 1999.


B.  Report, Opinion or Appraisals

         The Fairness Opinion of Keefe, Bruyette & Woods, Inc. was previously
filed as an appendix to the original joint proxy statement-prospectus.

         The Form of Fairness Opinion of Goldman, Sachs & Co. was previously
filed as an appendix to the original joint proxy statement-prospectus.

ITEM 22.  UNDERTAKINGS

1. The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Exchange Act) that is 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.

2. The undersigned registrant hereby undertakes as follows: that prior to any
public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this registration statement, by any person or
party who is deemed to be an underwriter within the meaning of Rule 145(c), the
issuer undertakes that such reoffering prospectus will contain the information
called for by the applicable registration form with respect to reofferings by
persons who may be deemed underwriters, in addition to the information called
for by the other Items of the applicable form.

3. The registrant undertakes that every prospectus (i) that is filed pursuant to
paragraph 2 immediately preceding, or (ii) that purports to meet the
requirements of Section 10(a) (3) of the Securities Act and is used in
connection with an offering of securities subject to Rule 415, will be filed as
a part of an amendment to the registration statement and will not be used until
such amendment is effective, and that, for purposes of determining any liability
under the Securities Act, each such post-effective amendment shall be deemed to
be a new registration


                                      II-2
<PAGE>   35
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.

4. Insofar as indemnification for liabilities arising under the Securities Act
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
such 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 whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

5. The undersigned registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the prospectus pursuant to
Items 4, 10(b), 11, or 13 of this Form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

6. Subject to appropriate interpretation, the undersigned registrant hereby
undertakes to supply by means of a post-effective amendment all information
concerning a transaction, and the company being acquired involved therein, that
was not the subject of and included in the registration statement when it became
effective.

7. 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.
Notwithstanding the foregoing, any increase or decrease in volume of securities
offered (if the total dollar value of securities offered would not exceed that
which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than 20 percent change in the
maximum aggregate offering price set forth in the "Calculation of Registration
Fee" table in the effective 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.

8. That, for the purpose 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 the time shall be deemed to be the initial bona
fide offering thereof.

9. 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.


                                      II-3
<PAGE>   36
                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant has duly caused this registration statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the Town of Mahwah,
State of New Jersey, on the 5th day of October, 1999.

                                           HUDSON UNITED BANCORP


                                           By: Kenneth T. Neilson
                                              ---------------------------------
                                               Kenneth T. Neilson,
                                               Chairman, President and
                                               Chief Executive Officer


         Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.


<TABLE>
<CAPTION>
                  Signature                                     Title                      Date
<S>                                                <C>                                <C>
                                                     Chairman, President, Chief
Kenneth T. Neilson                                                   Executive Officer and Director
- -------------------------------------------        (Principal Executive Officer)      October 5, 1999
(Kenneth T. Neilson)



*                                                             Director                October 5, 1999
- -------------------------------------------
(Robert J. Burke)



*                                                             Director                October 5, 1999
- -------------------------------------------
(Donald P. Calcagnini)


Joan David
- -------------------------------------------                   Director                October 5, 1999
(Joan David)



*                                                             Director                October 5, 1999
- -------------------------------------------
(Noel deCordova, Jr.)


Thomas R. Farley
- -------------------------------------------                   Director                October 5, 1999
(Thomas R. Farley)



- -------------------------------------------                   Director                October __, 1999
(Bryant D. Malcolm)
</TABLE>


                                      II-4
<PAGE>   37
<TABLE>
<CAPTION>
                  Signature                                     Title                      Date
<S>                                                <C>                                  <C>
*
- -------------------------------------------                   Director                  October 5, 1999
(W. Peter McBride)



*                                                             Director                  October 5, 1999
- -------------------------------------------
(Charles F.X. Poggi)



David A. Rosow                                                Director                  October 5, 1999
- -------------------------------------------
(David A. Rosow)



*                                                             Director                  October 5, 1999
- -------------------------------------------
(James E. Schierloh)


Sister Grace Frances Strauber
- -------------------------------------------                   Director                  October 5, 1999
(Sister Grace Frances Strauber)



*
- -------------------------------------------                   Director                  October 5, 1999
(John H. Tatigian, Jr.)


                                                    Executive Vice President and
Joseph F. Hurley                                         Chief Financial Offer          October 5, 1999
- -------------------------------------------
(Joseph F. Hurley)



Richard Alban                                                 Controller                October 5, 1999
- -------------------------------------------
(Richard Alban)
</TABLE>

               Kenneth T. Neilson
*        By: -------------------------------------------
         Kenneth T. Neilson
         Attorney-in-Fact


                                      II-5
<PAGE>   38
                                INDEX TO EXHIBITS

Exhibit
Number            Description

2(a)     Agreement and Plan of Merger, dated as of June 28, 1999, by and among
         Hudson United Bancorp ("HUB"), Hudson United Bank, JeffBanks, Inc.
         ("JEFFBANKS") Jefferson Bank and Jefferson Bank of New Jersey. *

2(b)     Stock Option Agreement, dated as of June 28, 1999, by and between HUB
         and JeffBanks. *

2(c)     Agreement and Plan of Merger dated as of September 15, 1999 between HUB
         and Dime Bancorp, Inc. ("DIME").**

2(d)     Stock Option Agreement, dated as of September 16, 1999 between Dime and
         HUB.**

2(e)     Stock Option Agreement, dated as of September 16, 1999 between HUB and
         Dime.**

5        Opinion of Pitney, Hardin, Kipp & Szuch as to the legality of the
         securities to be registered.*

8        Opinion of Pitney, Hardin, Kipp & Szuch as to certain tax consequences
         of the Merger.*

23(a)    Consent of Grant Thornton LLP.

23(b)    Consent of Arthur Andersen LLP.

23(c)    Consent of Athey & Company.

23(d)    Consent of Belfint, Lyons & Shuman, P.A.

23(e)    Consent of KPMG LLP.

23(f)    Consent of Pitney, Hardin, Kipp & Szuch (included in Exhibits 5 and 8
         hereto).*

24       Power of Attorney

99(a)    Form of revised Hudson United Proxy Card

99(b)    Form of revised JeffBanks Proxy Card

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

*        Previously filed.

**       Incorporated by reference to HUB's Current Report on Form 8-K filed
         September 24, 1999.

<PAGE>   1
                                                                   EXHIBIT 23(a)



               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANT



We have issued our report dated January 19, 1999 accompanying the consolidated
financial statements of JeffBanks, Inc. and subsidiaries appearing in the 1998
Annual Report of the Company to its shareholders included in the Annual Report
on Form 10-K for the year ended December 31, 1998 which is incorporated by
reference in this Post-Effective Amendment No. 1 of the Registration Statement
(File No. 333-84829) and Joint Proxy Statement-Prospectus. We consent to the
incorporation by reference in this Registration Statement and Joint Proxy
Statement-Prospectus of the aforementioned report and to the use of our name, as
it appears under the caption "Experts."



GRANT THORNTON LLP

Philadelphia, Pennsylvania
October 1, 1999

<PAGE>   1
                                                                   EXHIBIT 23(b)


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


         As independent public accountants, we hereby consent to the
incorporation by reference in this Registration Statement Post-Effective
Amendment No. 1 on Form S-4 (Registration Number 333-84829)of our report dated
January 12, 1999 included in Hudson United Bancorp's Annual Report on Form 10-K
and to all references to our Firm included in this Registration Statement.


                                                             ARTHUR ANDERSEN LLP




Roseland, New Jersey
September 30, 1999

<PAGE>   1
                                                                   EXHIBIT 23(c)



                        INDEPENDENT ACCOUNTANT'S CONSENT


         As independent public accountants, we hereby consent to the
incorporation by reference in this Post-Effective Amendment to the Registration
Statement of Hudson United Bancorp on Form S-4 (Registration No. 333-84829) of
our report dated January 22, 1999 included in Southern Jersey Bancorp of
Delaware, Inc.'s Annual Report on Form 10-K and to all references to our firm
included in this Post-Effective Amendment.

                                 ATHEY & COMPANY

Bridgeton, New Jersey
September 30, 1999

<PAGE>   1
                                                                   EXHIBIT 23(d)



                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

         As independent public accountants, we hereby consent to the
incorporation by reference in this Post-Effective Amendment to the Registration
Statement of Hudson United Bancorp on Form S-4 (Registration No. 333-84829) of
our report dated March 3, 1999 included in Southern Jersey Bancorp of Delaware,
Inc.'s Annual Report on Form 10-K for the year ended December 31, 1998 and to
all references to our Firm included in this Post-Effective Amendment.



                                             BELFINT, LYONS & SHUMAN, P.A.
                                             --------------------------------
                                             BELFINT, LYONS & SHUMAN, P.A.


Wilmington, Delaware
October 1, 1999

<PAGE>   1
                                                                   EXHIBIT 23(e)

                            INDEPENDENT AUDITORS' CONSENT

The Board of Directors
Dime Bancorp, Inc.:


We consent to the use of our report dated January 21, 1999, incorprated by
reference in Post-Effective Amendment No.1 to the Registration Statement on
Form S-4 (Registration Number 333-84829) of Hudson United Bancorp, relating to
our audit of the consolidated statements of financial conditon of Dime Bancorp,
Inc. and susidiaries equity, cash flows and comprehensive income for each of
the years in the three-year period ended December 31, 1998 which report
appears in the 8-K of Hudson United Bancorp dated October 5, 1999, and to the
reference to our Firm under the heading "Experts" in the Registration
Statement.



KPMG LLP

New York, New York
October 5, 1999

<PAGE>   1
                                                                      EXHIBIT 24

                              HUDSON UNITED BANCORP
                                POWER OF ATTORNEY
                                    FORM S-4


         KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Kenneth T. Neilson and D. Lynn Van
Borkulo-Nuzzo, as their attorney-in-fact, with power of substitution, for him or
her in any and all capacities, to sign any and all amendments (whether pre- or
post-effective), to this Registration Statement on Form S-4 of Hudson United
Bancorp (SEC File No. 333-84829) and to file the same with exhibits thereto and
other documents in connection therewith, with the Securities and Exchange
Commission, hereby ratifying and confirming all that said attorney-in-fact, or
his substitute or substitutes, may do or cause to be done by virtue thereof.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the date indicated.

<TABLE>
<CAPTION>
                  Signature                                     Title                      Date
<S>                                                <C>                                <C>
                                                     Chairman, President, Chief
                                                   Executive Officer and Director
KENNETH T. NEILSON                                 (Principal Executive Officer)      August 9, 1999
- -------------------------------------------
(Kenneth T. Neilson)



ROBERT J. BURKE                                               Director                August 9, 1999
- -------------------------------------------
(Robert J. Burke)



DONALD P. CALCAGNINI                                          Director                August 9, 1999
- -------------------------------------------
(Donald P. Calcagnini)



                                                              Director                August __, 1999
- -------------------------------------------
(Joan David)



NOEL deCORDOVA, JR.                                           Director                August 9, 1999
- -------------------------------------------
(Noel deCordova, Jr.)



                                                              Director                August ___, 1999
- -------------------------------------------
(Thomas R. Farley)



                                                              Director                August ___, 1999
- -------------------------------------------
(Bryant D. Malcolm)
</TABLE>
<PAGE>   2
<TABLE>
<CAPTION>
                  Signature                                     Title                      Date
<S>                                                <C>                                <C>
W. PETER McBRIDE                                              Director                August 9, 1999
- -------------------------------------------
(W. Peter McBride)




CHARLES F.X. POGGI                                            Director                August 9, 1999
- -------------------------------------------
(Charles F.X. Poggi)




                                                              Director                August ___ 1999
- -------------------------------------------
(David A. Rosow)



JAMES E. SCHIERLOH                                            Director                August 9, 1999
- -------------------------------------------
(James E. Schierloh)



                                                              Director                August ___, 1999
- -------------------------------------------
(Sister Grace Frances Strauber)



JOHN H. TATIGIAN, JR.                                         Director                August 9, 1999
- -------------------------------------------
(John H. Tatigian, Jr.)


                                                    Executive Vice President and
JOSEPH F. HURLEY                                       Chief Financial Offer          August 9, 1999
- -------------------------------------------
(Joseph F. Hurley)



RICHARD ALBAN                                                Controller               August 9, 1999
- -------------------------------------------
(Richard Alban)
</TABLE>

<PAGE>   1
                                                                   EXHIBIT 99(a)

                              HUDSON UNITED BANCORP

                                      PROXY

                     FOR THE SPECIAL MEETING OF SHAREHOLDERS

                  RECONVENED ON  _____________, NOVEMBER ___, 1999

                  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS



      The undersigned hereby appoints Robert J. Burke and Charles F.X. Poggi and
each of them, as Proxy, each with full power of substitution, to vote all of the
stock of HUDSON UNITED BANCORP standing in the undersigned's name at the
reconvened Special Meeting of Shareholders of HUDSON UNITED BANCORP, to be held
at Sheraton Crossroads, Route 17 North, Mahwah, NJ 07495 on ___________,
November ___, 1999 at _____ _.m., and at any adjournment thereof. The
undersigned hereby revokes any and all proxies heretofore given with respect
to such meeting.

      This proxy will be voted as specified below. IF NO CHOICE IS SPECIFIED,
THE PROXY WILL BE VOTED FOR APPROVAL OF THE MERGER OF JEFFBANKS, INC. WITH
HUDSON UNITED BANCORP AND THE ADOPTION OF THE MERGER AGREEMENT. Shares, if any,
held for your account by the trustee for the dividend reinvestment plan will be
voted in the same manner as you vote the shares in your name individually.

                                                              (see reverse side)
<PAGE>   2
1.       APPROVAL OF THE MERGER OF JEFFBANKS, INC. WITH HUDSON UNITED BANCORP
         AND THE ADOPTION OF THE MERGER AGREEMENT

           /   /       FOR

           /   /       AGAINST

           /   /       ABSTAIN


2.       In their discretion, upon such other matters as may properly come
         before the meeting.

                                               Dated:  ________________, 1999

                                               ___________________________
                                               Signature

                                               ___________________________
                                               Print Name

                                               ___________________________
                                               Signature

                                               ___________________________
                                               Print Name

                                               (Please sign exactly as
                                               your name appears on this
                                               proxy card. When signing as
                                               an executor, administrator,
                                               guardian, trustee or
                                               attorney, please give your
                                               title as such. If a
                                               corporation, please sign
                                               the full corporate name by
                                               President or other
                                               authorized officer. If a
                                               partnership, please sign in
                                               partnership name by
                                               authorized person. If the
                                               shares are held in joint
                                               name, all joint owners
                                               should sign.)


                                               PLEASE DATE, SIGN AND
                                                  RETURN PROMPTLY

<PAGE>   1
                                                                   EXHIBIT 99(b)

                                 JEFFBANKS, INC.

                                      PROXY

                     FOR THE SPECIAL MEETING OF SHAREHOLDERS

                   RECONVENED ON  _________, NOVEMBER ___, 1999

                  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS



      The undersigned hereby appoints Betsy Z. Cohen and Robert B. Goldstein,
and each of them, as Proxy, each with full power of substitution, to vote all of
the stock of JEFFBANKS, INC. standing in the undersigned's name at the
reconvened Special Meeting of Shareholders of JEFFBANKS, INC., to be held at
The Rittenhouse Hotel, 210 West Rittenhouse Square, Philadelphia, PA 19103,
on ________, November __,1999 at _____ _.m., and at any adjournment thereof.
The undersigned hereby revokes any and all proxies heretofore given with
respect to such meeting.

      This proxy will be voted as specified below. IF NO CHOICE IS SPECIFIED,
THE PROXY WILL BE VOTED FOR APPROVAL OF THE MERGER OF JEFFBANKS, INC. WITH
HUDSON UNITED BANCORP AND THE ADOPTION OF THE MERGER AGREEMENT. Shares, if any,
held for your account by the trustee for the dividend reinvestment plan will be
voted in the same manner as you vote the shares in your name individually.

                                                              (see reverse side)
<PAGE>   2
1.       APPROVAL OF THE MERGER OF JEFFBANKS, INC. WITH HUDSON UNITED BANCORP
         AND THE ADOPTION OF THE MERGER AGREEMENT

           /   /       FOR

           /   /       AGAINST

           /   /       ABSTAIN


2.       In their discretion, upon such other matters as may properly come
         before the meeting.

                                               Dated:  ________________, 1999

                                               ___________________________
                                               Signature

                                               ___________________________
                                               Print Name

                                               ___________________________
                                               Signature

                                               ___________________________
                                               Print Name

                                               (Please sign exactly as
                                               your name appears on this
                                               proxy card. When signing as
                                               an executor, administrator,
                                               guardian, trustee or
                                               attorney, please give your
                                               title as such. If a
                                               corporation, please sign
                                               the full corporate name by
                                               President or other
                                               authorized officer. If a
                                               partnership, please sign in
                                               partnership name by
                                               authorized person. If the
                                               shares are held in joint
                                               name, all joint owners
                                               should sign.)


                                               PLEASE DATE, SIGN AND
                                                  RETURN PROMPTLY


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