PROFESSIONAL BANCORP INC
DEF 14A, 1996-04-29
STATE COMMERCIAL BANKS
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<PAGE>
                            SCHEDULE 14A INFORMATION
 
                  Proxy Statement Pursuant to Section 14(a) of
            the Securities Exchange Act of 1934 (Amendment No.    )
 
    Filed by the Registrant /X/
    Filed by a Party other than the Registrant / /
 
    Check the appropriate box:
    / /  Preliminary Proxy Statement
    / /  Confidential, for Use of the Commission Only (as permitted by Rule
         14a-6(e)(2))
    /X/  Definitive Proxy Statement
    / /  Definitive Additional Materials
    / /  Soliciting  Material  Pursuant  to  Section  240.14a-11(c)  or  Section
         240.14a-12
 
                                 PROFESSIONAL BANCORP, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
 
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
Payment of Filing Fee (Check the appropriate box):
 
/X/  $125 per  Exchange Act  Rules 0-11(c)(1)(ii),  14a-6(i)(1), 14a-6(i)(2)  or
     Item 22(a)(2) of Schedule 14A.
/ /  $500  per  each party  to  the controversy  pursuant  to Exchange  Act Rule
     14a-6(i)(3).
/ /  Fee  computed  on   table  below   per  Exchange   Act  Rules   14a-6(i)(4)
     and 0-11.
     1) Title of each class of securities to which transaction applies:
        ------------------------------------------------------------------------
     2) Aggregate number of securities to which transaction applies:
        ------------------------------------------------------------------------
     3) Per unit price or other underlying value of transaction computed
        pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
        filing fee is calculated and state how it was determined):
        ------------------------------------------------------------------------
     4) Proposed maximum aggregate value of transaction:
        ------------------------------------------------------------------------
     5) Total fee paid:
        ------------------------------------------------------------------------
/ /  Fee paid previously with preliminary materials.
/ /  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2)  and identify the  filing for which the  offsetting fee was paid
     previously. Identify the previous filing by registration statement  number,
     or the Form or Schedule and the date of its filing.
     1) Amount Previously Paid:
        ------------------------------------------------------------------------
     2) Form, Schedule or Registration Statement No.:
        ------------------------------------------------------------------------
     3) Filing Party:
        ------------------------------------------------------------------------
     4) Date Filed:
        ------------------------------------------------------------------------
<PAGE>
                           PROFESSIONAL BANCORP, INC.
                                  606 BROADWAY
                         SANTA MONICA, CALIFORNIA 90401
 
                            ------------------------
 
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 19, 1996
                             ---------------------
 
    NOTICE  IS HEREBY  GIVEN TO THE  SHAREHOLDERS OF  PROFESSIONAL BANCORP, INC.
(the "Company") that, pursuant to the Bylaws of the Company and the call of  its
Board  of Directors, the  Annual Meeting of Shareholders  (the "Meeting") of the
Company will be held at  the main office of  First Professional Bank, N.A.,  606
Broadway, Santa Monica, CA 90401, Wednesday, June 19, 1996 at 5:30 p.m., for the
purpose of considering and voting upon the following matters:
 
    1. ELECTION OF DIRECTORS.  Electing the following seven persons to the Board
of  Directors to serve until  the 1997 Annual Meeting  of Shareholders and until
their successors are elected and have qualified:
 
          Richard A. Berger                   Joel W. Kovner, Dr., P.H., MPH
          James B. Jacobson                   Lynn O. Poulson
          Ronald L. Katz, M.D.                David G. Rodeffer, MPH
          Anthony R. Kovner, Ph.D.
 
    2. APPROVING THE 1996  NON-EMPLOYEE DIRECTOR STOCK  OPTION PLAN.   Approving
the  Company's  1996 Non-Employee  Director  Stock Option  Plan  covering 50,000
shares of the  Company's Common  Stock, as more  fully described  in this  Proxy
Statement.
 
    3.  APPROVING APPOINTMENT OF INDEPENDENT  PUBLIC ACCOUNTANTS.  Approving the
appointment of  the  firm  of  KPMG  Peat  Marwick  LLP  as  independent  public
accountants for 1996.
 
    4.  OTHER BUSINESS.   Transacting such  other business as  may properly come
before the Meeting and any adjournment or adjournments thereof.
 
    The Board of Directors has fixed the close of business on April 26, 1996, as
the record date for determination of shareholders entitled to notice of, and  to
vote at, the Meeting.
 
                                          By Order of the Board of Directors
 
                                          Joel W. Kovner
                                          CHAIRMAN OF THE BOARD
Dated: April 29, 1996
<PAGE>
    Section  3.3 of  the Bylaws  of the Company  provides for  the nomination of
directors in the following manner:
 
        "NOMINATION OF DIRECTORS.  Nominees for  election to the Board shall  be
    selected  by the Board  or a committee of  the Board to  which the Board has
    delegated the authority to  make such selections  pursuant to these  Bylaws.
    The  Board or  such committee,  as the  case may  be, will  consider written
    recommendations from shareholders  for nominees  for election  to the  Board
    provided  such recommendations, together with (i) such information regarding
    each nominee as would be required to be included in a proxy statement  filed
    pursuant  to the  Exchange Act,  (ii) a  description of  all arrangements or
    other understandings among the recommending shareholder and each nominee and
    any other person with  respect to such nomination  and (iii) the consent  of
    each  nominee to serve  as a director  are received by  the Secretary of the
    Corporation, in the  case of an  annual meeting of  shareholders, not  later
    then  the  date  specified  in  the  most  recent  proxy  statement  of  the
    Corporation as the date by which shareholder proposals for consideration  at
    the  next annual meeting of shareholders must  be received, and, in the case
    of a special meeting of shareholders, not later then the tenth day after the
    giving of notice of such meeting.  Only persons duly nominated for  election
    to  the Board  in accordance  with this  [Bylaw] and  with respect  to whose
    nominations proxies have been solicited pursuant to a proxy statement  filed
    pursuant  to the Exchange Act  shall be eligible for  election to the Board.
    Each notice to shareholders of a meeting of shareholders at which  directors
    are  to be elected shall contain a statement to the effect set forth in this
    [Bylaw]."
 
    YOU ARE URGED TO VOTE  IN FAVOR OF THE PROPOSALS  OF THE COMPANY'S BOARD  OF
    DIRECTORS  BY  SIGNING  AND  RETURNING THE  ENCLOSED  PROXY  AS  PROMPTLY AS
    POSSIBLE, WHETHER  OR NOT  YOU PLAN  TO ATTEND  THE MEETING  IN PERSON.  THE
    ENCLOSED  PROXY  IS  SOLICITED  BY THE  COMPANY'S  BOARD  OF  DIRECTORS. ANY
    SHAREHOLDER GIVING A PROXY MAY  REVOKE IT PRIOR TO THE  TIME IT IS VOTED  BY
    NOTIFYING  THE  SECRETARY OF  THE COMPANY  IN WRITING  OF REVOCATION,  OR BY
    FILING A  DULY EXECUTED  PROXY BEARING  A LATER  DATE, OR  BY ATTENDING  THE
    MEETING  AND VOTING IN PERSON.  PLEASE INDICATE ON THE  PROXY WHETHER OR NOT
    YOU EXPECT TO ATTEND THE MEETING.
<PAGE>
                           PROFESSIONAL BANCORP, INC.
                                  606 BROADWAY
                         SANTA MONICA, CALIFORNIA 90401
 
                            ------------------------
 
                                PROXY STATEMENT
                             ---------------------
 
                         ANNUAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 19, 1996
                             ---------------------
 
                                  INTRODUCTION
 
    This  Proxy Statement  is furnished in  connection with  the solicitation of
Proxies for  use  at the  Annual  Meeting  of Shareholders  (the  "Meeting")  of
Professional  Bancorp, Inc.  (the "Company")  to be held  at the  main office of
First Professional Bank, N.A., 606 Broadway, Santa Monica, CA 90401,  Wednesday,
June 19, 1996 at 5:30 p.m., and at any and all adjournments.
 
    It  is anticipated that this Proxy  Statement will be mailed to shareholders
eligible to receive  notice of and  vote at the  Meeting on or  about April  29,
1996.
 
    The matters to be considered and voted upon at the Meeting will be:
 
    1. ELECTION OF DIRECTORS.  Electing the following seven persons to the Board
of Directors of the Company (the "Board") to serve until the 1997 Annual Meeting
of Shareholders and until their successors are elected and have qualified:
 
      Richard A. Berger               Joel W. Kovner, Dr., P.H., MPH
      James B. Jacobson               Lynn O. Poulson, J.D.
      Ronald L. Katz, M.D.            David G. Rodeffer, MPH
      Anthony R. Kovner, Ph.D.
 
    2.  APPROVING THE 1996  NON-EMPLOYEE DIRECTOR STOCK  OPTION PLAN.  Approving
the Company's  1996  Non-Employee Director  Stock  Option Plan  covering  50,000
shares  of the  Company's Common  Stock, as more  fully described  in this Proxy
Statement.
 
    3. APPROVING APPOINTMENT OF INDEPENDENT  PUBLIC ACCOUNTANTS.  Approving  the
appointment  of  the  firm  of  KPMG  Peat  Marwick  LLP  as  independent public
accountants for 1996.
 
REVOCABILITY OF PROXIES
 
    A form of  Proxy for  voting your  shares at  the Meeting  is enclosed.  Any
shareholder  who executes  and delivers such  a Proxy  has the right  to and may
revoke it at any time before it is exercised by filing with the Secretary of the
Company an instrument revoking it or a duly executed Proxy bearing a later date.
In addition, the  powers of  the Proxy  Holders will  be revoked  if the  person
executing  the Proxy is present  at the Meeting and elects  to vote in person by
advising the Chairman of the Meeting of his/her election to vote in person,  and
by  voting  in person  at the  Meeting.  Subject to  such revocation  all shares
represented by a properly executed Proxy  received in time for the Meeting  will
be  voted by the Proxy Holders in accordance with the instructions on the Proxy.
IF NO INSTRUCTION IS SPECIFIED WITH RESPECT TO A PROPOSAL TO BE ACTED UPON,  THE
SHARES REPRESENTED BY YOUR EXECUTED PROXY WILL BE VOTED IN FAVOR OF THE ELECTION
OF  THE NOMINEES FOR DIRECTOR  SET FORTH HEREIN, IN  FAVOR OF APPROVING THE 1996
NON-EMPLOYEE  DIRECTOR  STOCK  OPTION  PLAN,  AND  IN  FAVOR  OF  RATIFYING  THE
APPOINTMENT OF KPMG PEAT MARWICK LLP AS INDEPENDENT PUBLIC ACCOUNTANTS FOR 1996.
IF  ANY OTHER BUSINESS IS  PROPERLY PRESENTED AT THE  MEETING, THE PROXY WILL BE
VOTED IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE BOARD.
<PAGE>
PERSONS MAKING THE SOLICITATION
 
    This solicitation of  Proxies is  being made by  the Board.  The expense  of
preparing,  assembling,  printing  and  mailing  this  Proxy  Statement  and the
materials used in the solicitation of Proxies  for the Meeting will be borne  by
the  Company.  It is  contemplated that  Proxies  will be  solicited principally
through the  use of  the mail,  but  officers, directors  and employees  of  the
Company  and its  subsidiary, First  Professional Bank,  N.A. (the  "Bank"), may
solicit  Proxies  personally   or  by  telephone,   without  receiving   special
compensation  therefor.  Although there  is no  formal agreement  to do  so, the
Company may reimburse banks, brokerage houses and other custodians, nominees and
fiduciaries for their reasonable expenses in forwarding these Proxy Materials to
shareholders whose shares of  the Company's Common Stock  are held of record  by
such entities.
 
                               VOTING SECURITIES
 
    There  were issued and outstanding 1,300,650  shares of the Company's Common
Stock on April 26, 1996, which has been fixed as the record date for the purpose
of determining  the  shareholders entitled  to  notice of  and  to vote  at  the
Meeting.  Each holder of Common Stock will be entitled to one vote, in person or
by Proxy, for  each share of  Common Stock held  of record on  the books of  the
Company  as of the  record date for the  Meeting on any  matter submitted to the
vote of  the  shareholders, except  that  in  connection with  the  election  of
directors,  the shares  may be voted  cumulatively if a  shareholder present and
voting at the Meeting gives notice at the Meeting and prior to the voting of his
or her  intention  to  so  vote.  If any  shareholder  gives  such  notice,  all
shareholders may cumulate their votes for nominees. Cumulative voting means that
a  shareholder has the right to  vote the number of shares  he or she owns as of
the record date, multiplied by the number of directors to be elected. This total
number of votes  may be  cast for  one nominee or  it may  be distributed  among
nominees  in any  manner as  the shareholder sees  fit. If  cumulative voting is
declared at the Meeting, votes represented by Proxies delivered pursuant to this
Proxy Statement may  be cumulated  in the discretion  of the  Proxy Holders,  in
accordance with the recommendations of the Board, and discretionary authority to
do so is included in the Proxy.
 
                                     VOTING
 
    The  presence, in person or by Proxy, of  the holders of at least a majority
of the  total number  of outstanding  shares  of Common  Stock is  necessary  to
constitute a quorum at the Meeting. At the Meeting, directors will be elected by
a  plurality  of the  votes cast.  Therefore, the  seven nominees  receiving the
highest number of affirmative votes shall be elected directors of the Company at
the conclusion of the  tabulation of the votes.  The actual number of  directors
elected  may be  less than  seven in  the event  that fewer  than seven nominees
receive any affirmative votes under the rules of cumulative voting (see  "VOTING
SECURITIES"  herein). Shares represented by  Proxies which are marked "authority
withheld" or Proxies marked to deny discretionary authority with respect to  the
election  of any one or more nominees  for election as directors will be counted
for the purpose of determining the number of shares represented at the  meeting,
but  will not be  considered as a vote  for or as a  vote against the respective
nominee or nominees and thus will have no effect on the election of such nominee
or nominees as  director. Each  other matter presented  at the  Meeting will  be
decided  by a  majority of the  votes cast on  that matter. Shares  voted on one
proposal but  not all  proposals on  the  Proxies returned  by brokers  will  be
counted  for the purpose of determining the  number of shares represented at the
meeting, but will  not be considered  as a vote  for or against  any matter  not
voted  on. Abstentions will also  be counted for the  purpose of determining the
number of shares represented  at the meeting,  but will not  be considered as  a
vote for or against any matter as to which the abstention is effective.
 
                                       2
<PAGE>
         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
    The  following table sets  forth certain information, as  of April 10, 1996,
concerning the beneficial ownership of the Company's outstanding Common Stock by
each director and executive officer of the Company, by each nominee to the Board
of Directors, by all directors and executive officers of the Company as a  group
and by principal shareholders.
 
<TABLE>
<CAPTION>
                                                     COMMON STOCK
                                                     BENEFICIALLY
                                                      OWNED AND
                                                      NATURE OF       PERCENT OF
               NAME AND ADDRESS (1)                 OWNERSHIP (2)     CLASS (3)
- --------------------------------------------------  --------------    ----------
<S>                                                 <C>               <C>
Richard A. Berger                                       23,402(4)        1.80%
James B. Jacobson                                       12,021(5)        0.92%
Ronald L. Katz, M.D.                                    17,824(6)        1.37%
Anthony R. Kovner, Ph.D (7)                              1,200           0.09%
Joel W. Kovner, Dr., P.H., MPH                         403,064(8)       24.60%
Lynn O. Poulson                                         21,154(9)        1.62%
Daniel S. Rader                                         34,274(10)       2.58%
David G. Rodeffer, MPH                                  54,242(11)       4.10%
All Directors and Executive Officers
 (8 in Number)                                         567,181(12)      33.46%
Robert H. Leshner (13)
 (holds no office)                                     111,825(14)       7.96%
</TABLE>
 
- ------------------------
 (1) Address for all individuals other than Mr. Leshner and Dr. A. Kovner is c/o
     Professional Bancorp, Inc., 606 Broadway, Santa Monica, California 90401.
 
 (2) Unless otherwise indicated, the persons named herein have sole and/or joint
     voting power over shares reported and such shares are owned directly.
 
 (3) Options  and Warrants to purchase shares of Common Stock held by directors,
     officers and other individuals that  were exercisable within 60 days  after
     April   26,  1996  ("Exercisable  Option  Shares"  or  Exercisable  Warrant
     shares"), are  treated as  outstanding  for the  purpose of  computing  the
     number  and percentage of outstanding securities of the class owned by such
     person but not  for the purpose  of computing the  percentage of the  class
     owned by any other person.
 
 (4) Includes 1,785 Exercisable Option Shares.
 
 (5) Includes 595 Exercisable Option Shares.
 
 (6) Includes 1,785 Exercisable Option Shares.
 
 (7) Anthony  R. Kovner, Ph.D. is the brother of Joel W. Kovner, Dr., P.H., MPH.
     Dr. A. Kovner's business address is 40 West Fourth Street, 600 Tisch  Hall,
     New York, New York, 10012.
 
 (8) Includes 337,695 Exercisable Option Shares.
 
 (9) Includes 1,785 Exercisable Option Shares.
 
(10) Includes 30,000 Exercisable Option Shares.
 
(11) Includes 21,000 Exercisable Option Shares.
 
(12) Includes 394,645 Exercisable Option Shares.
 
(13) Mr.  Leshner's  business  address  is  312  Walnut  Street,  Cincinnati, OH
     45202-3874.
 
(14) Includes 105,000 Exercisable Warrant Shares.
 
                                       3
<PAGE>
                                   PROPOSAL 1
                             ELECTION OF DIRECTORS
 
NOMINEES
 
    The Company's Bylaws  provide that the  Board shall consist  of one or  more
directors  as determined by the Board. The  Board has fixed the number at seven.
The seven persons named below who  are currently members of the Company's  Board
will  be nominated  for election  as directors  to serve  until the  1997 Annual
Meeting of  Shareholders  and  until  their  successors  are  elected  and  have
qualified.  Votes will be  cast in such a  way as to effect  the election of all
seven nominees, or  as many thereof  as possible under  the rules of  cumulative
voting  (see "VOTING SECURITIES" herein). In the  event that any of the nominees
should be unable to serve as a director,  it is intended that the Proxy will  be
voted  for  the  election of  such  substitute  nominees, if  any,  as  shall be
designated by the  Board. The Board  has no reason  to believe that  any of  the
nominees  will be  unavailable to serve  if elected.  Additional nominations can
only be made by complying with the  notice provision set forth in the Bylaws  of
the  Company, an extract of which is included in the Notice of Annual Meeting of
Shareholders accompanying this Proxy Statement. This Bylaw provision is designed
to give  the Board  advance notice  of competing  nominations, if  any, and  the
qualifications  of competing  nominees, and  may have  the effect  of precluding
third-party nominations if the notice provisions are not followed.
 
               IDENTIFICATION OF DIRECTORS AND EXECUTIVE OFFICERS
 
    None of the  directors or  executive officers  of the  Company was  selected
pursuant  to any arrangement or understanding, other than with the directors and
executive officers of the Company and the Bank acting within their capacities as
such. There  are no  family relationships  between the  directors and  executive
officers  of the Company except that Anthony  R. Kovner, Ph.D. is the brother of
Joel W. Kovner, Dr., P.H., MPH.
 
    The following table sets for the  names and certain information as of  April
26,  1996, concerning the persons  to be nominated by  the Board for election as
directors of the Company and the one executive officer of the Company who is not
nominated for election as a director:
 
<TABLE>
<CAPTION>
                                                                                                   YEAR             YEAR
                                                                                                 APPOINTED        APPOINTED
                                                                                                OR ELECTED       OR ELECTED
           NAME AND TITLE                                 BUSINESS EXPERIENCE DURING            DIRECTOR OF      DIRECTOR OF
       (OTHER THAN DIRECTOR)              AGE                 THE PAST FIVE YEARS               THE COMPANY       THE BANK
- ------------------------------------      ---      -----------------------------------------  ---------------  ---------------
<S>                                   <C>          <C>                                        <C>              <C>
Richard A. Berger                         64       President, Richard A. Berger Associates,           1981             1981
                                                    Inc. (Realtors); past President and
                                                    Chief Financial Officer, California
                                                    Culinary Institute
James B. Jacobson                         73       President, JBJ Management Inc. (personal           1990             1990
                                                    services corporation)
Ronald L. Katz                            63       Professor of anesthesiology, USC Medical           1984             1984
                                                    Center; Professor and past Chairman of
                                                    Anesthesiology, UCLA Medical Center;
                                                    past Chief of Staff, UCLA Medical Center
Anthony R. Kovner, Ph.D.                  62       Professor, Wagner Graduate School of               1996             1996
                                                    Public Service, New York University;
                                                    past Director, Hospital Community
                                                    Benefit Standards Program, New York
                                                    University
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                   YEAR             YEAR
                                                                                                 APPOINTED        APPOINTED
                                                                                                OR ELECTED       OR ELECTED
           NAME AND TITLE                                 BUSINESS EXPERIENCE DURING            DIRECTOR OF      DIRECTOR OF
       (OTHER THAN DIRECTOR)              AGE                 THE PAST FIVE YEARS               THE COMPANY       THE BANK
- ------------------------------------      ---      -----------------------------------------  ---------------  ---------------
<S>                                   <C>          <C>                                        <C>              <C>
Joel W. Kovner, Dr. P.H., MPH             54       Chief Executive Officer, First                     1981             1981
 Chairman of the Board of Directors,                Professional Bank, N.A.; Medical
 President and Chief Executive                      Economist
 Officer (1)
Lynn O. Poulson, J.D.                     58       Partner of Johnson & Poulson (law firm)            1982             1982
 Secretary (1)
Daniel S. Rader                           36       Executive Vice President, Chief                     N/A              N/A
 Chief Financial Officer and                        Investment Officer (since 1994), Chief
 Treasurer (1)                                      Financial Officer (since 1993),
                                                    Controller (since 1987), First
                                                    Professional Bank, N.A.
David G. Rodeffer, MPH                    51       Executive Vice President and Chief                 1994             1994
                                                    Operating Officer, First Professional
                                                    Bank, N.A., (since 1994); formerly
                                                    Partner of Coopers and Lybrand
                                                    (Healthcare division)
</TABLE>
 
- ------------------------
(1) All indicated officer positions  have been held for  the past five years  or
    longer.
 
                    THE BOARD OF DIRECTORS RECOMMENDS A VOTE
                    OF "AUTHORITY GIVEN" ON THIS PROPOSAL 1.
 
BOARD OF DIRECTORS AND COMMITTEES OF THE BOARD
 
    During  1995, the Board  held fourteen meetings. The  Audit Committee of the
Board oversees the Company's outside  independent public accountants. The  Audit
Committee consists of Mr. Berger and Dr. Katz and met ten times during 1995.
 
    The  Board does  not have a  standing nominating  or compensation committee;
however, the  Board  of  Directors  of  First  Professional  Bank,  N.A.  has  a
compensation  committee which performs  those functions and  will be referred to
herein as the Compensation Committee.
 
    During 1995, no director of the Company who is standing for election at  the
Annual  Meeting attended less  than 75% of  the aggregate meetings  of the Board
and, if applicable, the committee of the Board on which he or she served.
 
COMPLIANCE WITH SECTION 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934
 
    Section 16(a) of the Securities Exchange Act of 1934 requires the  Company's
directors  and executive officers, and persons who  own more than ten percent of
the Company's Common Stock, to file with the Securities and Exchange  Commission
and  the American  Stock Exchange  initial reports  of ownership  and reports of
changes in ownership  of Common Stock  of the Company.  Officers, directors  and
greater  than ten percent shareholders are required by SEC regulation to furnish
the Company with copies of all Section 16(a) reports they file.
 
    To the Company's knowledge, based solely  upon review of the copies of  such
reports  furnished  to the  Company and  written  representations that  no other
reports were required, during the year ended December 31, 1995 all Section 16(a)
filing requirements applicable to its  officers, directors and greater than  ten
percent beneficial owners were fulfilled in a timely manner.
 
                                       5
<PAGE>
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                 LONG-TERM COMPENSATION
                                                                            ---------------------------------
                                                                                    AWARDS
                                                                            -----------------------
                                                                                         SECURITIES   PAYOUTS
                                                     ANNUAL COMPENSATION    RESTRICTED   UNDERLYING   -------
                                                     --------------------     STOCK      OPTIONS #/    LTIP         ALL OTHER
         NAME AND PRINCIPAL POSITION           YEAR   SALARY   BONUS (1)      AWARDS      SARS (2)    PAYOUTS   COMPENSATION (3)
- ---------------------------------------------  ----  --------  ----------   ----------   ----------   -------   -----------------
<S>                                            <C>   <C>       <C>          <C>          <C>          <C>       <C>
Joel W. Kovner, Dr., P.H.                      1995  $208,500   $240,000     -0-           -0-         -0-           $ 4,500
  Chairman of the Board and Chief              1994   203,000    249,400     -0-           -0-         -0-             3,000
  Executive Officer of the Company             1993   197,000    288,000     -0-           10,500      -0-             8,728
Melinda McIntyre-Kolpin (4)                    1995   140,500    125,000     -0-           -0-         -0-          -0-
  President of First                           1994   136,500    125,000     -0-           -0-         -0-          -0-
  Professional Bank, N.A.                      1993   132,500    125,000     -0-            6,500      -0-          -0-
David G. Rodeffer, MPH                         1995   154,500     75,000     -0-           -0-         -0-             4,500
  Executive Vice President                     1994   150,000     75,000     -0-           25,000      -0-            75,816
  and Chief Operating Officer of               1993    N/A        N/A        N/A           N/A         N/A          N/A
  First Professional Bank, N.A.
Daniel S. Rader                                1995   100,000     35,000     -0-           -0-         -0-             4,050
  Chief Financial Officer and                  1994    86,000     35,000     -0-           -0-         -0-             2,320
  Treasurer of the Company                     1993    79,500     30,000     -0-            2,000      -0-             2,040
</TABLE>
 
- ------------------------
(1) Includes  bonuses accrued in 1995, 1994 and  1993 and paid in 1996, 1995 and
    1994, respectively,  except  for  Melinda McIntyre-Kolpin;  $97,500  of  Ms.
    McIntyre-Kolpin's  bonus earned  in 1995  was paid  in 1995,  $87,500 of her
    bonus earned in 1994  was paid in  1994 and $67,500 of  her bonus earned  in
    1993 was paid in 1993.
 
(2) Reflects  options  only; no  stock  appreciation rights  ("SARs")  have been
    issued.
 
(3) Reflects the  Bank's  contribution to  the  officer's savings  plan  account
    pursuant  to  Section 401(k)  of the  Internal Revenue  Code, and  a $75,000
    signing bonus paid to David G. Rodeffer, who joined the Company in  January,
    1994.
 
(4) Melinda  McIntyre-Kolpin  resigned  as  an  officer  and  director effective
    February 9, 1996  at which time  she was paid  $42,000 for accrued  vacation
    time.
 
    There were no options or SARs granted in 1995.
 
   AGGREGATED OPTIONS/SAR EXERCISES IN LAST FISCAL YEAR AND FY-END OPTION/SAR
                                     VALUES
 
<TABLE>
<CAPTION>
                                                                         NUMBER OF
                                                                        SECURITIES
                                                                        UNDERLYING      VALUE OF
                                                                        UNEXERCISED    UNEXERCISED
                                                                       OPTIONS/SARS   OPTIONS/SARS
                                                                       AT FY-END (#)  AT FY-END ($)
                                                                       -------------  -------------
                                SHARES ACQUIRED                        EXERCISABLE/   EXERCISABLE/
            NAME                ON EXERCISE (#)   VALUE REALIZED ($)   UNEXERCISABLE  UNEXERCISABLE
- -----------------------------  -----------------  -------------------  -------------  -------------
<S>                            <C>                <C>                  <C>            <C>
Joel W. Kovner, Dr. P.H.              --                  --              385,000/0      490,715/0
Melinda McIntyre-Kolpin               --                  --               81,500/0      156,503/0
David G. Rodeffer, MPH                --                  --               21,000/0       22,470/0
                                                                            0/5,250(1)      5,618/0
Daniel S. Rader                        4,602              41,648           30,000/0        7,260/0
</TABLE>
 
- ------------------------
(1) These 5,250 options become exercisable on August 1, 1996.
 
                                       6
<PAGE>
COMPENSATION OF DIRECTORS
 
    Compensation  is paid to  outside directors only.  During 1995, each outside
director of  the  Company  received  a  monthly  fee  of  $1,000.  Additionally,
compensation  was paid based on committee  membership as follows: members of the
Audit Committee  received  $250  per  month (Ronald  L.  Katz,  M.D.)  with  the
committee  chairman receiving $400 per month (Richard A. Berger); members of the
Bank's Loan Committee  receive $750 per  month (Messrs. James  B. Jacobson,  and
Lynn  O.  Poulson,  J.D.); Chairman  of  the Bank's  Community  Reinvestment Act
Oversight Committee received $700 per month (Richard A. Berger).
 
        EMPLOYMENT CONTRACTS AND TERMINATION OF EMPLOYMENT ARRANGEMENTS
 
SALARY CONTINUATION PLAN
 
    In February  1992, the  Bank discontinued  an existing  term life  insurance
policy  provided as  an employee  benefit to Dr.  Kovner and  established in its
place a Salary  Continuation Plan  (the "SCP").  The term  life policy  provided
that,  in the event of Dr. Kovner's death, his estate would receive a $1,500,000
death benefit. The  SCP is a  nonqualified, executive benefit  plan pursuant  to
which  the Bank will pay Dr. Kovner an annual retirement benefit of $150,000 per
year for 15  years upon his  retirement from  active daily service  at or  after
reaching  age 60 in return for his continued current satisfactory performance as
an employee of  the Bank. If  Dr. Kovner dies  while the SCP  is in effect,  his
estate  will receive the payments under the SCP which he was entitled to receive
at the time of his death. Dr.  Kovner's right to receive benefits under the  SCP
vested  on  September  1,  1992  representing his  completion  of  ten  years of
continuous service since the Bank commenced  operations. The SCP is an  unfunded
plan;  however, as a deferred compensation plan,  the Bank is required to accrue
sufficient expenses so that the present value  of the benefit to be paid to  Dr.
Kovner  at age 60 is reflected as a  liability on the Bank's books by that time.
During 1996, the  Bank will  accrue such liability  at a  rate of  approximately
$11,000  per month.  The SCP  is not  an employment  contract. In  the event Dr.
Kovner's employment with the Bank  is terminated, voluntarily or  involuntarily,
for  any other reason the  Bank shall commence paying  benefits to Dr. Kovner as
called for under the  SCP. In order  to fund its obligation  under the SCP,  the
Bank has purchased a single premium universal life policy under which Dr. Kovner
is  the  insured  while  the  Bank is  the  owner  and  beneficiary  thereof. If
assumptions as to mortality experience,  policy dividends and other factors  are
realized,  the Bank  will receive  earnings under  the new  policy equal  to the
expense accruals for the SCP retirement benefits. There can be no assurance that
such assumptions will be realized.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    The following persons served on the Company's Compensation Committee  during
1995:  Messrs.  Richard A.  Berger,  H. Leon  Brooks,  M.D., Chairman,  James B.
Jacobson, Ronald L. Katz, M.D., Ray T. Oyakawa, M.D. and Lynn O. Poulson. All of
the above persons other  than James B. Jacobson,  have had banking  transactions
with  the  Bank  which  have  included  extensions  of  credit  during  1995. In
management's opinion,  all  loans  and  commitments to  lend  included  in  such
transactions  were made in compliance with  applicable laws on substantially the
same terms, including interest  rates, collateral and  repayment terms as  those
prevailing   for  comparable   transactions  with   other  persons   of  similar
creditworthiness and did not involve more  than a normal risk of  collectibility
or  present other unfavorable terms.  As of April 26,  1996, all such loans were
current.
 
                                       7
<PAGE>
                         COMMON STOCK PERFORMANCE GRAPH
 
    The  Comparison  Stock   Performance  Graph  below   shall  not  be   deemed
incorporated  by reference by  any general statement  incorporating by reference
this proxy statement into any filing under  the Securities Act of 1933 or  under
the  Securities  Exchange  Act  of  1934,  except  to  the  extent  the  Company
specifically incorporates this information by reference, and shall not otherwise
be deemed filed under such Acts.
 
    The following graph shows a five year comparison of cumulative total returns
for the  Company, S&P  500 Index  and Peer  Group Index.  The Peer  Group  Index
consists  of commercial banks  listed on the American  Stock Exchange (AMEX) and
was provided to the Company by SNL Securities.
 
                                [CHART]
 
<TABLE>
<CAPTION>
                               12/31/91     12/31/92     12/31/93     12/31/94     12/31/95
<S>                           <C>          <C>          <C>          <C>          <C>
S & P 500 Stock Index             100.00       140.41       154.57       156.29       210.57
SNL AMEX Index                    100.00       138.10       147.28       159.30       235.58
Professional Bancorp, Inc.
 Common Stock                     100.00       237.50       220.84       129.17       218.76
</TABLE>
 
- ------------------------
 
(1) Assumes $100  invested  on 12/31/90  in  Professional Bancorp,  Inc.  Common
    Stock, S&P 500 Index, and the SNL AMEX Bank Index. Also assumes reinvestment
    of all dividends.
 
CERTAIN TRANSACTIONS
 
    Some  of the  current directors and  executive officers of  the Company, and
companies with which they are associated, are customers of, and have had banking
transactions with, the Bank  in the ordinary course  of the Bank's business  and
the  Bank expects to have banking transactions  with such persons in the future.
In management's opinion,  all loans  and commitments  to lend  included in  such
transactions  were made in compliance with  applicable laws on substantially the
same terms, including interest  rates, collateral and  repayment terms as  those
prevailing   for  comparable   transactions  with   other  persons   of  similar
creditworthiness and did not involve more  than a normal risk of  collectibility
or  present other unfavorable terms.  As of April 26,  1996, all such loans were
current.
 
    In  addition,  the  board  permits  certain  executive  officers  to  obtain
short-term  loans from the Company. During 1995, Dr. Joel W. Kovner, Chairman of
the Board and Chief Executive Officer of the Company, received loans between May
and December totaling  $162,500 at  an interest rate  of 6.8%.  At December  31,
1995, the balance was $162,500.
 
                                       8
<PAGE>
                                   PROPOSAL 2
                       APPROVAL OF 1996 STOCK OPTION PLAN
 
INTRODUCTION
 
    On  March 20, 1996, the Board  adopted, subject to shareholder approval, the
Professional Bancorp 1996 Stock Option Plan (the "1996 Plan"). The 1996 Plan  is
a  "formula" stock option plan and provides for the grant of non-qualified stock
options to all non-employee  directors, of which there  are currently five.  The
1996  Plan is not  subject to any  of the provisions  of the Employee Retirement
Income Security Act of 1974, as amended.
 
    The 1996  Plan provides  for the  issuance of  up to  50,000 shares  of  the
Company's  Common Stock to  non-employee directors by an  initial grant of 1,800
option shares to each non-employee director  and a grant of 1,250 option  shares
to  each non-employee director  who is re-elected  on the date  of the Company's
annual meeting each  year through the  year 2000.  On March 20,  1996, with  the
exception  of Anthony R. Kovner, Ph.D., each director received an initial option
grant of 1,800 option  shares at an  exercise price of  $12.00, the fair  market
value  of the shares on the date of  grant. On April 24, 1996 Anthony R. Kovner,
Ph.D. was appointed to the Board and  received an initial option grant of  1,800
option  shares at  an exercise  price of  $11.00, the  fair market  value of the
shares on  the  date of  grant.  Previously, on  November  15, 1995,  the  Board
canceled  certain options granted in January  1993 to each non-employee director
under the 1990 Stock Option Plan, each grant in the amount of 1,785.
 
    The 1996 Plan is designed to provide performance incentives to participating
non-employee directors  without rendering  such participants  unable to  act  as
disinterested directors with respect to other compensation plans of the Company,
in  compliance with  Rule 16b-3 of  the Securities and  Exchange Commission. The
only options granted to non-employee directors  will be from the 1996 Plan.  The
Board  believes it is advisable for the  shareholders to approve the adoption of
the 1996 Plan.
 
SUMMARY OF THE 1996 PLAN
 
    The following description  of the  1996 Plan  is intended  to highlight  and
summarize the principal terms of the 1996 Plan, and is qualified in its entirety
by the text of the 1996 Plan, a copy of which is attached hereto as Exhibit A.
 
    The 1996 Plan will be administered by the Board. Options may be granted only
to non-employee directors of the Company.
 
    ELIGIBLE  PARTICIPANTS.  Each  individual who is  a non-employee director on
the date of adoption of  the Plan by the Board  shall receive an initial  option
grant of 1,800 option shares at an exercise price equal to the fair market value
thereof  on the date of grant. Such  initial option grants shall be made subject
to approval by the  Company's shareholders of this  Plan. Any individual who  is
not  a director  at the  time of the  initial option  grants, but  who becomes a
non-employee director,  shall  automatically  receive an  initial  option  grant
effective  the date such  individual becomes a  non-employee director. Beginning
with the  first annual  meeting of  the  shareholders of  the Company  which  is
subsequent  to the date  the Plan is adopted  by the Board,  and provided that a
sufficient number of shares remain available under the Plan, each year, prior to
termination of the Plan, on the date  of the annual meeting of the  shareholders
of  the  Company  there  shall automatically  be  awarded  to  each non-employee
director who is re-elected to the Board  on such date an annual option grant  of
1,250  option shares at an exercise price equal to the fair market value thereof
on the date of grant.
 
    SHARES SUBJECT TO  THE 1996 PLAN.   50,000  shares are covered  by the  1996
Plan,  which  will  constitute approximately  3.84%  of the  current  issued and
outstanding shares. Options  shall be granted  at the fair  market value of  the
Company's Common Stock on the date of the grant of the option.
 
    NON-QUALIFIED  STOCK OPTIONS.  The 1996 Plan  provides only for the grant of
non-qualified options.
 
    TERMS AND CONDITIONS  OF OPTIONS.   The term  of each  stock option  granted
pursuant  to the  1996 Plan shall  be ten (10)  years from the  date of granting
thereof. Within such ten-year limit, each  stock option granted pursuant to  the
1996 Plan shall be exercisable ratably over a four-year period commencing on the
 
                                       9
<PAGE>
first  anniversary of the date the stock option was granted (i.e., one-fourth of
the total number  of option  shares may  be acquired  by exercise  of the  stock
option  upon and  after the  first anniversary,  another one-forth  of the total
number of option shares may be acquired  upon exercise of the stock option  upon
and  after the second  anniversary, etc.). If  an optionee does  not exercise an
increment of  an  option in  any  period  during which  such  increment  becomes
exercisable,  the unexercised  increment may be  exercised at any  time prior to
expiration of the option.
 
    Options granted under the 1996 Plan may not be transferred otherwise than by
will or by the laws of descent and distribution, and during his or her lifetime,
only the optionee or, in the event of the disability of the optionee, his or her
guardian or the conservator of his or her estate may exercise the option.
 
    EXERCISE OF OPTIONS.   Subject  to the restrictions  set forth  in the  1996
Plan,  an option may be exercised in accordance with the terms of the individual
stock option agreement. Full payment by the optionee for all shares as to  which
the  option is being exercised is due and payable at the time of exercise of the
option. Payment must be in cash and/or,  with the prior written approval of  the
Board,  and subject to prior  regulatory approval, in shares  of Common Stock of
the Company.
 
    An option  may be  exercised with  respect to  whole shares  only,  although
fractional share interests may be accumulated and exercised from time to time as
whole  shares during the term of the  option. Options may only be exercised with
respect to a minimum of ten (10) whole shares, unless fewer than ten (10) shares
remain subject to the option at the  time of exercise. Any shares subject to  an
option  which  expires or  terminates without  being exercised  become available
again for issuance under the 1996 Plan.
 
    Neither an  eligible  participant  nor  an optionee  has  any  rights  as  a
shareholder  with respect to  the shares of  Common Stock covered  by any option
which may  be or  has  been granted  to such  person,  and which  is  thereafter
exercised, until the date of issuance of the stock certificate by the Company to
such person.
 
    STOCK  OPTION AGREEMENT.   The  1996 Plan  provides that  every grant  of an
option will be  evidenced by a  written stock option  agreement executed by  the
Company  and the optionee. Subject to the terms and conditions of the 1996 Plan,
the stock option agreement will contain  the terms and provisions pertaining  to
each  option so granted,  such as exercise  price, permissible date  or dates of
exercise, termination date,  and such other  terms and conditions  as the  Board
deems  desirable  and  not  inconsistent  with  the  1996  Plan.  Termination of
Affiliation. In the event an optionee  ceases to be affiliated with the  Company
or  a subsidiary of the  Company for any reason  other than disability, death or
termination for cause, the stock options  granted to such optionee shall  expire
at  the earlier of the expiration dates  specified for the options, or three (3)
months after the optionee ceases to  be so affiliated. During such period  after
cessation  of affiliation,  the optionee may  exercise the option  to the extent
that it was exercisable as of the  date of such termination, and thereafter  the
option expires in its entirety.
 
    The 1996 Plan, and all stock options previously granted under the 1996 Plan,
shall  terminate  upon the  dissolution or  liquidation of  the Company,  upon a
consolidation, reorganization, or merger as a result of which the Company is not
the surviving corporation, or  upon a sale  of all or  substantially all of  the
assets   of  the  Company.  However,   all  options  theretofore  granted  shall
immediately exercisable in  their entirety  upon the  occurrence of  any of  the
foregoing,  and any options not exercised immediately upon the occurrence of any
of the  foregoing  events  will  terminate unless  provision  is  made  for  the
assumption  or substitution thereof. As a result of this acceleration provision,
even if an outstanding option were not fully vested as to all increments at  the
time of the event, that option will become fully vested and exercisable.
 
    AMENDMENT  AND TERMINATION  OF THE  1996 PLAN.   The  Board may  at any time
suspend, amend or  terminate the 1996  Plan, and  may, with the  consent of  the
respective  optionee, make  such modifications  to the  terms and  conditions of
outstanding options as  it shall deem  advisable. Without shareholder  approval,
however,  the Board may not materially increase  the maximum number of shares of
Common Stock which may be issued under the 1996 Plan (except as described  under
"ADJUSTMENTS  UPON CHANGES IN CAPITALIZATION" below), modify the requirements as
to eligibility for participation in the 1996  Plan or make any other change  for
which  shareholder approval is  required under Rule 16b-3  of the Securities and
Exchange Commission.
 
                                       10
<PAGE>
    ADJUSTMENTS UPON  CHANGES IN  CAPITALIZATION.   The total  number of  shares
covered  by the 1996  Plan and the price,  kind and number  of shares subject to
outstanding  options  thereunder,  will  be  appropriately  and  proportionately
adjusted  by the Board if the outstanding  shares of Common Stock of the Company
are increased, decreased, changed  into or exchanged for  a different number  or
kind  of shares  or securities  of the  Company through  reorganization, merger,
recapitalization,  reclassification,   stock   split,  stock   dividend,   stock
consolidation  or otherwise, without consideration to the Company as provided in
the  1996  Plan.  Fractional  share   interests  of  such  adjustments  may   be
accumulated,  although no  fractional shares of  stock will be  issued under the
1996 Plan.
 
    FEDERAL INCOME TAX CONSEQUENCES.  The 1996 Plan provides only for the  grant
of non-qualified stock options. If such options are exercised, the excess of the
fair market value of the acquired shares at the time of exercise over the option
exercise price will be treated as ordinary income to the optionee in the year of
exercise. Upon exercise of a non-qualified stock option, the optionee's basis in
the shares of Common Stock received will be the sum of the option exercise price
and  the amount of ordinary income recognized  by the optionee from the exercise
of the stock option. The optionee's holding period in the shares of Common Stock
received will begin on the date received.  Upon exercise of such a stock  option
by  transfer of  shares of  Common Stock  already owned  by the  optionee, under
Internal Revenue Service Revenue Ruling 80-244,  the optionee will be deemed  to
have  received an equivalent number  of shares of Common  Stock in a non-taxable
exchange (the "Substituted  Common Stock")  and the  remainder, if  any, of  the
shares  of  Common Stock  will  be deemed  to have  been  received in  a taxable
transaction (the "Non-Substituted  Common Stock"). The  optionee's basis in  the
Substituted  Common  Stock  will generally  be  the  same as  his  basis  in the
previously owned shares, and his holding period will include the holding  period
of  the previously  owned shares. The  Non-Substituted Common Stock  will have a
holding period which begins on the date when it is received.
 
    On the disposition  of shares of  Common Stock received  upon exercise of  a
non-qualified  stock option, the difference between  the amount realized and the
optionee's basis in the shares will be (if the shares constitute a capital asset
in the hands of the optionee) a  long-term or short-term capital gain (or  loss)
depending on whether the optionee's holding period of the shares is more than 12
months prior to their disposition.
 
    The  Company will be entitled  to claim a deduction at  the same time and in
the  same  amount  as  income  is  recognized  by  the  optionee  exercising   a
non-qualified  stock  option  provided that  applicable  income  tax withholding
requirements are satisfied. No income will be recognized by the optionee, and no
deduction shall  be  allowable  to  the  Company, by  reason  of  the  grant  of
non-qualified stock options.
 
CERTAIN INFORMATION CONCERNING ALL OPTIONS
 
    In  addition to the foregoing, the Tax  Reform Act of 1984 enacted an excise
tax of twenty percent (20%) and the disallowance of a deduction to a corporation
for compensation  to  its employees,  officers,  Shareholders, and  others  that
results in an "excess parachute payment" within the meaning of Code Section 280G
(b).
 
    The  Tax  Reform  Act  of  1986 repealed  the  net  long-term  capital gains
deduction for individuals. thus, capital gains are now taxable to individuals at
ordinary income rates but not more  than 28%. capital losses, whether  long-term
or  short-term, are fully deductible  against capital gains and  up to $3,000 of
ordinary income. Any unused capital losses may be carried forward indefinitely.
 
    The specific state tax consequences to each optionee under the 1996 Plan may
vary, depending  upon  the  laws  of  the  various  states  and  the  individual
circumstances of each optionee (and under legislation currently being considered
by Congress). It is suggested that each optionee consult his or her personal tax
advisor  regarding both the federal and state  tax consequences of the grant and
exercise of options.
 
VOTE REQUIRED
 
    Assuming the  presence  of a  quorum  at the  Meeting,  Proposal 2  will  be
approved  upon approval by holders of a  majority of the shares of the Company's
common Stock represented and voting at the Meeting.
 
                                       11
<PAGE>
NEW PLAN BENEFITS
 
    The following table sets  forth the stock options  that the individuals  and
groups  referred to below will receive in 1996 if the 1996 Non-Employee Director
Stock Option  Plan is  approved  by the  Company's  stockholders at  the  Annual
Meeting.   Executive  officers  and  employee-directors   are  not  eligible  to
participate in the 1996 Plan.
 
                               NEW PLAN BENEFITS
    PROFESSIONAL BANCORP, INC. 1996 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN
 
<TABLE>
<CAPTION>
               NAME AND POSITION                    DOLLAR VALUE ($)     NUMBER OF UNITS
- ------------------------------------------------  ---------------------  ---------------
<S>                                               <C>                    <C>
Joel W. Kovner, Dr., P.H., MPH                             -0-                 -0-
 Chairman of the Board of Directors,
 Chief Executive Officer
Melinda McIntyre-Kolpin (1)                                -0-                 -0-
 President of First Professional Bank, N.A.
David G. Rodeffer, MPH                                     -0-                 -0-
 Executive Vice President and
 Chief Operating Officer,
 First Professional Bank, N.A.
Daniel S. Rader                                            -0-                 -0-
 Chief Financial Officer,
 Treasurer
Executive Group                                            -0-                 -0-
Non-Executive Director Group                                     (2)           15,250
Non-Executive Officer Employee Group                       -0-                 -0-
</TABLE>
 
- ------------------------
(1) Melinda  McIntyre-Kolpin  resigned  as an  officer  and  director  effective
    February 9, 1996.
 
(2)  Dollar value  is dependent  upon the future  share price  of Company Common
    Stock.
 
        THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THIS PROPOSAL 2.
 
                                   PROPOSAL 3
         RATIFICATION OF APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
    The firm of KPMG Peat Marwick  LLP served as independent public  accountants
for  the Company and  the Bank for  1995 and has  been selected by  the Board of
Directors to continue to serve in that capacity for 1996.
 
    It is anticipated  that a representative  of KPMG Peat  Marwick LLP will  be
present  at the  Meeting, will  have an  opportunity to  make a  statement if so
desired, and  will  be  available  to  respond  to  appropriate  questions  from
shareholders.
 
    Shareholder  ratification of the selection of auditors is not required under
the laws of  the State of  Pennsylvania, but the  Board nevertheless decided  to
ascertain the views of the shareholders in this regard. If the selection of KPMG
Peat  Marwick LLP is  not ratified at  the Meeting, the  Board will consider the
selection of other auditors.
 
        THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THIS PROPOSAL 3.
 
                                       12
<PAGE>
          SHAREHOLDER PROPOSALS TO BE PRESENTED AT NEXT ANNUAL MEETING
 
    Proposals of  shareholders  intended to  be  presented at  the  next  Annual
Meeting  of Shareholders of the  Company (i) must be  received by the Company at
its offices  at 606  Broadway, Santa  Monica, California  90401, no  later  than
December  9,  1996  and (ii)  must  satisfy  the conditions  established  by the
Securities and Exchange Commission for  shareholder proposals to be included  in
the Company's Proxy Statement for that meeting.
 
                                 OTHER MATTERS
 
    The  Company's  Board  of Directors  does  not  know of  any  matters  to be
presented at the  Meeting other than  those set forth  above. However, if  other
matters come before the Meeting, it is the intention of the persons named in the
accompanying  Proxy to vote said Proxy in accordance with the recommendations of
the Company's Board of Directors on such matters, and discretionary authority to
do so is included in the Proxy.
 
                                          BY ORDER OF THE BOARD OF DIRECTORS
 
                                          Joel W. Kovner
                                          Chairman of the Board
 
Dated: April 29, 1996
 
    MANAGEMENT OF THE COMPANY WILL SUPPLY WITHOUT COST, UPON WRITTEN REQUEST,  A
COPY  OF THE COMPANY'S MOST RECENT ANNUAL REPORT ON FORM 10K INCLUDING FINANCIAL
STATEMENTS AND SCHEDULES. SUCH  REQUEST SHOULD BE DIRECTED  TO DANIEL S.  RADER,
CHIEF FINANCIAL OFFICER, PROFESSIONAL BANCORP, INC., 606 BROADWAY, SANTA MONICA,
CALIFORNIA 90401.
 
                                       13
<PAGE>
                                   EXHIBIT A
                PROFESSIONAL BANCORP 1996 NON-EMPLOYEE DIRECTOR
                               STOCK OPTION PLAN
 
    1.  PURPOSE
 
    The  purpose of  the Professional  Bancorp 1996  Non-Employee Director Stock
Option  Plan  (the   "Plan")  is   to  strengthen   Professional  Bancorp   (the
"Corporation")  by providing performance  incentives to participating directors.
The Plan seeks  to accomplish  this purpose by  providing a  means whereby  such
directors may purchase shares of the Common Stock of the Corporation pursuant to
Stock  Options  granted  in accordance  with  this Plan.  Stock  Options granted
pursuant to this Plan are not intended to be Incentive Stock Options.
 
    2.  DEFINITIONS
 
    For purposes of  this Plan,  the following  terms shall  have the  following
meanings:
 
        (a)   "ANNUAL  OPTION GRANT."   This term  shall mean a  Stock Option to
    purchase 1,250 shares of Common Stock granted under Section 6(a)(ii) below.
 
        (b)  "COMMON STOCK."  This  term shall mean shares of the  Corporation's
    $.008  par value common stock, subject  to adjustment pursuant to Section 13
    (Adjustment Upon Changes in Capitalization) hereunder.
 
        (c)  "CORPORATION."  This term  shall mean Professional Bancorp, Inc.  a
    Pennsylvania corporation.
 
        (d)  "FAIR MARKET VALUE."  This term shall mean the fair market value of
    the  Common Stock as determined in  accordance with any reasonable valuation
    method selected by the Board  of Directors, including the valuation  methods
    described in Treasury Regulations Section 20.2031-2.
 
        (e)   "INITIAL OPTION  GRANT."  This  term shall mean  a Stock Option to
    purchase 1,800 shares of Common Stock granted under Section 6(a)(i).
 
        (f)  "NON-EMPLOYEE  DIRECTOR."   This term shall  mean a  member of  the
    Board  of Directors of  the Corporation who  is not also  an employee of the
    Corporation.
 
        (g)  "OPTION SHARES."  This term shall mean Common Stock covered by  and
    subject to any outstanding unexercised Stock Option granted pursuant to this
    Plan.
 
        (h)  "OPTIONEE."  This term shall mean any Non-Employee Director to whom
    a  Stock Option  has been  granted pursuant to  this Plan,  provided that at
    least part of the Stock Option is outstanding and unexercised.
 
        (i)   "PLAN."   This  term  shall  mean the  Professional  Bancorp  1996
    Non-Employee  Director Stock  Option Plan as  embodied herein and  as may be
    amended from time to time in accordance with the terms hereof and applicable
    law.
 
        (j)  "STOCK OPTION."  This term shall mean the right to purchase  Common
    Stock  under this Plan in a specified number  of shares, at a price and upon
    the terms and conditions set forth  herein, and shall refer to both  Initial
    Option  Grants and Annual Option Grants unless the context clearly indicates
    otherwise.
 
    3.  ADMINISTRATION
 
        (a)  BOARD OF DIRECTORS.  This  Plan shall be administered by the  Board
    of Directors of the Corporation.
 
        (b)  DECISIONS AND DETERMINATIONS.  Subject to the express provisions of
    the  Plan, the Board of  Directors shall have the  authority to construe and
    interpret   this   Plan,   to   define    the   terms   used   herein,    to
 
                                      A-1
<PAGE>
    prescribe,  amend,  and  rescind  rules  and  regulations  relating  to  the
    administration of the Plan, and  to make all other determinations  necessary
    or  advisable for  administration of  the Plan. Any  action of  the Board of
    Directors with respect to the administration of the Plan shall be valid  and
    binding.
 
    4.  SHARES SUBJECT TO THE PLAN
 
    Subject  to adjustment as provided in  Section 13 hereof, the maximum number
of shares of Common Stock which may be issued upon exercise of all Stock Options
granted under this  Plan is limited  to fifty thousand  (50,000) shares, in  the
aggregate. If any Stock Option shall be canceled, surrendered, or expire for any
reason  without having  been exercised  in full,  the unpurchased  Option Shares
represented thereby shall again be available  for grants of Stock Options  under
this Plan.
 
    5.  ELIGIBILITY
 
    Only  Non-Employee Directors  shall be eligible  to receive  grants of Stock
Options under this Plan.
 
    6.  GRANTS OF STOCK OPTIONS
 
        (a)  GRANTS.
 
           (i) Each individual who is a Non-Employee Director on the date of the
       adoption of this Plan by the Board of Directors shall receive an  Initial
       Option  Grant  on that  date. Such  Initial Option  Grants shall  be made
       subject to approval by the  Corporation's shareholders of this Plan.  Any
       individual  who  is not  a Director  at  the time  of the  Initial Option
       Grants, but  who becomes  a  Non-Employee Director,  shall  automatically
       receive  an  Initial  Option  Grant effective  the  date  such individual
       becomes a Non-Employee Director.
 
           (ii) Beginning with the first  annual meeting of shareholders of  the
       Corporation  which is subsequent to  the date the Plan  is adopted by the
       Board of  Directors, and  provided  that a  sufficient number  of  shares
       remain  available under the Plan, each  year, prior to termination of the
       Plan, on  the date  of the  annual  meeting of  the shareholders  of  the
       Corporation  there shall  automatically be  awarded to  each Non-Employee
       Director who is  re-elected to  the Board of  Directors on  such date  an
       Annual Option Grant.
 
        (b)  TERMS.
 
           (i)  The per share purchase price of the Common Stock subject to each
       Option granted hereunder shall be equal  to the Fair Market Value of  the
       Common Stock on the date of the grant of the Option.
 
           (ii) The term of each Stock Option granted pursuant to the Plan shall
       be ten (10) years from the date of granting thereof. Within such ten year
       limit, Stock Options will be exercisable as provided herein.
 
          (iii)  Each  Stock  Option  granted  pursuant  to  the  Plan  shall be
       exercisable ratably  over a  four  year period  commencing on  the  first
       anniversary of the date the Stock Option was granted (I.E., one-fourth of
       the  total number  of Option  Shares may be  acquired by  exercise of the
       Stock Option upon and after the first anniversary, another one-fourth  of
       the  total number of Option  Shares may be acquired  upon exercise of the
       Stock Option upon and after the second anniversary, etc.).
 
    7.  EXERCISE OF STOCK OPTIONS
 
        (a)   EXERCISE.   Each Stock  Option shall  be exercisable  as  provided
    herein.  If an Optionee shall not exercise  any part of a Stock Option which
    has become vested, the Optionee's right  to exercise such part of the  Stock
    Option  shall continue until expiration of the Stock Option. No Stock Option
    or part thereof shall be exercisable except with respect to whole shares  of
    Common  Stock, and  fractional share  interests shall  be disregarded except
    that they may be accumulated.
 
        (b)   NOTICE AND  PAYMENT.   Stock Options  granted hereunder  shall  be
    exercised  by  written notice  delivered to  the Corporation  specifying the
    number   of   Option    Shares   with   respect    to   which   the    Stock
 
                                      A-2
<PAGE>
    Option  is being exercised, together with  concurrent payment in full of the
    exercise price  as  hereinafter  provided.  If the  Stock  Option  is  being
    exercised  by any  person or  persons other  than the  Optionee, said notice
    shall  be  accompanied  by  proof,  satisfactory  to  the  counsel  for  the
    Corporation,  of the right of  such person or persons  to exercise the Stock
    Option. The Corporation's receipt of a notice of exercise without concurrent
    receipt of the  full amount of  the exercise  price shall not  be deemed  an
    exercise of a Stock Option by an Optionee, and the Corporation shall have no
    obligation  to  an Optionee  for  any Option  Shares  unless and  until full
    payment of the exercise price is received by the Corporation and all of  the
    terms and provisions of the Plan and the related Stock Option agreement have
    been fully complied with.
 
        (c)  PAYMENT OF EXERCISE PRICE.  The exercise price of any Option Shares
    purchased  upon the proper exercise of a  Stock Option shall be paid in full
    at the time of each exercise of a Stock Option in cash, (or bank,  cashier's
    or  certified check) and/or, with the prior written approval of the Board of
    Directors at  or  before  the time  of  exercise,  in Common  Stock  of  the
    Corporation  which, when  added to  the cash payment,  if any,  which has an
    aggregate Fair Market Value equal to  the full amount of the exercise  price
    of  the Stock Option, or  part thereof, then being  exercised. Payment by an
    Optionee as provided  herein shall  be made  in full  concurrently with  the
    Optionee's  notification to the Corporation of his intention to exercise all
    or part of a Stock Option. If all or any part of a payment is made in shares
    of Common Stock as heretofore provided, such payment shall be deemed to have
    been made  only  upon receipt  by  the  Corporation of  all  required  share
    certificates, and all stock powers and all other required transfer documents
    necessary to transfer the shares of Common Stock to the Corporation.
 
        (d)   MINIMUM  EXERCISE.  Not  less than  ten (10) Option  Shares may be
    purchased at any one time upon exercise of a Stock Option unless the  number
    of  shares purchased is the total number  which remain to be purchased under
    the Stock Option.
 
        (e)  COMPLIANCE WITH  LAW.  No  shares of Common  Stock shall be  issued
    upon  exercise of any Stock  Option, and an Optionee  shall have no right or
    claim to such  shares, unless  and until: (i)  payment in  full as  provided
    hereinabove has been received by the Corporation; (ii) in the opinion of the
    counsel  for  the Corporation,  all applicable  requirements  of law  and of
    regulatory bodies having jurisdiction over  such issuance and delivery  have
    been  fully complied with; and (iii) if  required by federal or state law or
    regulation, the Optionee shall have paid  to the Corporation the amount,  if
    any,  required to be withheld on the amount deemed to be compensation to the
    Optionee as a result  of the exercise  of his or her  Stock Option, or  made
    other  arrangements satisfactory to the Corporation, in its sole discretion,
    to satisfy applicable income tax withholding requirements.
 
        (f)  REORGANIZATION.  Notwithstanding any provision herein pertaining to
    the time of exercise of  a Stock Option, or  part thereof, upon adoption  by
    the  requisite holders of the outstanding shares of Common Stock of any plan
    of dissolution, liquidation, reorganization,  merger, consolidation or  sale
    of  all or  substantially all  of the assets  of the  Corporation to another
    corporation which would, upon consummation, result in termination of a Stock
    Option in accordance with  Section 14 hereof,  all Stock Options  previously
    granted  shall become immediately  exercisable as to  all unexercised Option
    Shares for  such  period of  time  as may  be  determined by  the  Board  of
    Directors, but in any event not less than 30 days, on the condition that the
    terminating  event described  in Section 14  hereof is  consummated. If such
    terminating event is not consummated, Stock Options granted pursuant to  the
    Plan shall be exercisable in accordance with their original terms.
 
    8.  NONTRANSFERABILITY OF STOCK OPTIONS
 
    Each  Stock Option shall,  by its terms, be  nontransferable by the Optionee
other than  by will  or  the laws  of descent  and  distribution, and  shall  be
exercisable during the Optionee's lifetime only by the Optionee.
 
    9.  CONTINUATION OF AFFILIATION
 
    Nothing  contained in  this Plan  (or in  any Stock  Option Agreement) shall
confer on any Optionee the right to  remain a member of the Corporation's  Board
of Directors.
 
                                      A-3
<PAGE>
    10.  CESSATION OF AFFILIATION
 
    If,  for any reason other than disability or death, an Optionee ceases to be
affiliated with  the Corporation,  the Stock  Options granted  to such  Optionee
shall  expire on the  expiration dates specified  for said Stock  Options at the
time of their  grant, or three  (3) months after  the Optionee ceases  to be  so
affiliated,  whichever  is  earlier.  During  such  period  after  cessation  of
affiliation,  such  Stock  Options  shall  be  exercisable  only  as  to   those
increments,  if any, which had  become exercisable as of  the date on which such
Optionee ceased to be affiliated with the Corporation, and any Stock Options  or
increments  which  had  not become  exercisable  as  of such  date  shall expire
automatically on such date.
 
    11.  DEATH OF OPTIONEE
 
    If an Optionee  dies while affiliated  with the Corporation,  or during  the
three-month  period referred to in Section  10 hereof, the Stock Options granted
to such Optionee shall expire on  the expiration dates specified for said  Stock
Options  at the  time of their  grant, or  one (1) year  after the  date of such
death, whichever  is earlier.  After  such death,  but before  such  expiration,
subject  to the terms  and provisions of  the Plan and  the related Stock Option
Agreements, the person or persons to whom such Optionee's rights under the Stock
Options shall have  passed by  will or  by the  applicable laws  of descent  and
distribution,  or the executor or administrator  of the Optionee's estate, shall
have the right to exercise such Stock Options to the extent that increments,  if
any, had become exercisable as of the date on which the Optionee died.
 
    12.  DISABILITY OF OPTIONEE
 
    If  an Optionee is disabled while  affiliated with the Corporation or during
the three-month  period referred  to in  Section 10  hereof, the  Stock  Options
granted to such Optionee shall expire on the expiration dates specified for said
Stock  Options at the time of  their grant, or one (1)  year after the date such
disability occurred, whichever  is earlier.  After such  disability occurs,  but
before  such  expiration, the  Optionee or  the guardian  or conservator  of the
Optionee's estate, as duly appointed by a court of competent jurisdiction, shall
have the right to exercise such Stock Options to the extent that increments,  if
any, had become exercisable as of the date on which the Optionee became disabled
or  ceased to be affiliated with the  Corporation as a result of the disability.
An Optionee shall be deemed to be "disabled" if it shall appear to the Board  of
Directors,  upon  written  certification  delivered  to  the  Corporation  of  a
qualified licensed  physician,  that the  Optionee  has become  permanently  and
totally  unable to  engage in  any substantial gainful  activity by  reason of a
medically determinable physical or  mental impairment which  can be expected  to
result  in the Optionee's death, or which has  lasted or can be expected to last
for a continuous period of not less than twelve (12) months.
 
    13.  ADJUSTMENT UPON CHANGES IN CAPITALIZATION
 
    If the outstanding shares of Common Stock of the Corporation are  increased,
decreased, or changed into or exchanged for a different number or kind of shares
or   securities   of  the   Corporation,   through  a   reorganization,  merger,
recapitalization,  reclassification,   stock   split,  stock   dividend,   stock
consolidation,  or  otherwise,  without  consideration  to  the  Corporation, an
appropriate and proportionate adjustment shall be made in the number and kind of
shares as to  which Stock  Options may  be granted.  A corresponding  adjustment
changing  the number or kind of Option  Shares and the exercise prices per share
allocated to unexercised Stock  Options, or portions  thereof, which shall  have
been  granted prior to any such change, shall likewise be made. Such adjustments
shall be made without  change in the total  price applicable to the  unexercised
portion  of the Stock Option,  but with a corresponding  adjustment in the price
for each  Option Share  subject  to the  Stock  Option. Adjustments  under  this
Section  shall be made by the Board of Directors, whose determination as to what
adjustments  shall  be  made,  and  the  extent  thereof,  shall  be  final  and
conclusive.  No fractional  shares of  stock shall  be issued  or made available
under the Plan on  account of such adjustments,  and fractional share  interests
shall be disregarded, except that they may be accumulated.
 
    14.  TERMINATION EVENTS
 
    Upon   consummation  of  a  plan  of   dissolution  or  liquidation  of  the
Corporation, or  upon  consummation  of  a plan  of  reorganization,  merger  or
consolidation   of  the  Corporation  with  one   or  more  corporations,  as  a
 
                                      A-4
<PAGE>
result of which the Corporation is not the surviving entity, or upon the sale of
all or substantially all the assets  of the Corporation to another  corporation,
subject  to the provisions  of Section 7(f) hereof  the Plan shall automatically
terminate and all Stock Options theretofore granted shall be terminated,  unless
provision  is made in  connection with such transaction  for assumption of Stock
Options theretofore granted,  or substitution  for such Stock  Options with  new
stock options covering stock of a successor employer corporation, or a parent or
subsidiary  corporation  thereof, solely  at  the discretion  of  such successor
corporation, or parent or  subsidiary corporation, with appropriate  adjustments
as to number and kind of shares and prices.
 
    15.  AMENDMENT AND TERMINATION
 
    The  Board of Directors of the Corporation may  at any time and from time to
time suspend, amend,  or terminate  the Plan  and may,  with the  consent of  an
Optionee, make such modifications of the terms and conditions of that Optionee's
Stock  Option as it shall  deem advisable; provided, however,  that the Board of
Directors may not  change the award  provisions of Section  6(a) more than  once
every  six  months, and  provided further  that, except  as permitted  under the
provisions of Section  14 hereof, no  amendment or modification  may be  adopted
without  the Corporation having first obtained the  approval of the holders of a
majority of the  Corporation's outstanding  shares of Common  Stock present,  or
represented,  and entitled to vote at a duly held meeting of shareholders of the
Corporation, or by written consent, if the amendment or modification would:
 
        (a)  materially increase the number of shares of Common Stock for  which
    options may be issued under the Plan;
 
        (b)   modify the requirements as to eligibility for participation in the
    Plan; or
 
        (c)  make any  other change for which  shareholder approval is  required
    under Rule 16b-3 of the Securities and Exchange Commission.
 
    No  Stock Option may be  granted during any suspension  of the Plan or after
termination of the Plan. Amendment, suspension, or termination of the Plan shall
not (except as otherwise provided in Section 14 hereof), without the consent  of
the  Optionee, alter or impair any rights  or obligations under any Stock Option
theretofore granted.
 
    16.  PRIVILEGES  OF STOCK  OWNERSHIP; REGULATORY LAW  COMPLIANCE; NOTICE  OF
SALE
 
    No Optionee shall be entitled to the privileges of stock ownership as to any
Option  Shares  not  actually issued  and  delivered.  No Option  Shares  may be
purchased upon  the  exercise  of a  Stock  Option  unless and  until  all  then
applicable  requirements of all regulatory  agencies having jurisdiction and all
applicable requirements of the securities exchanges upon which securities of the
Corporation are listed (if any) shall have been fully complied with.
 
    17.  EFFECTIVE DATE OF THE PLAN
 
    The Plan  shall  be deemed  adopted  as of  March  20, 1996,  and  shall  be
effective  immediately, subject  to approval  of the Plan  by the  holders of at
least a majority of the Corporation's outstanding shares of Common Stock.
 
    18.  TERMINATION
 
    Unless previously terminated as aforesaid, the Plan shall terminate five (5)
years from  the earliest  date of:  (i) adoption  of the  Plan by  the Board  of
Directors  of the  Corporation; or (ii)  approval of  the Plan by  holders of at
least a majority  of the outstanding  shares of Common  Stock. No Stock  Options
shall  be  granted under  the Plan  thereafter, but  such termination  shall not
affect any Stock Option theretofore granted.
 
    19.  OPTION AGREEMENT
 
    Each Stock Option  granted under the  Plan shall be  evidenced by a  written
Stock  Option Agreement executed by the  Corporation and the Optionee, and shall
contain each of the provisions and agreements herein specifically required to be
contained therein, and  such other  terms and conditions  not inconsistent  with
this Plan.
 
                                      A-5
<PAGE>
    20.  STOCK OPTION PERIOD
 
    Each Stock Option and all rights and obligations thereunder shall expire ten
(10)  years from the date such Stock Option  is granted, and shall be subject to
earlier termination as provided elsewhere in this Plan.
 
    21.  AGREEMENT AND REPRESENTATIONS OF OPTIONEE
 
    Unless the shares of Common Stock covered by this Plan have been  registered
with  the  Securities  and  Exchange  Commission  pursuant  to  the registration
requirements under the Securities Act of  1933, each Optionee shall: (i) by  and
upon  accepting a Stock Option,  represent and agree in  writing, for himself or
herself and  his  or  her  transferees  by will  or  the  laws  of  descent  and
distribution,  that the Option  Shares will be  acquired for investment purposes
and not for resale or distribution; and (ii) by and upon the exercise of a Stock
Option, or a  part thereof,  furnish evidence  satisfactory to  counsel for  the
Corporation,  including written and  signed representations, to  the effect that
the Option Shares are being acquired for investment purposes and not for  resale
or  distribution, and that the Option Shares being acquired shall not be sold or
otherwise transferred by the Optionee except in compliance with the registration
provisions under  the Securities  Act  of 1933,  as  amended, or  an  applicable
exemption  therefrom. Furthermore, the  Corporation, at its  sole discretion, to
assure itself that any sale or  distribution by the Optionee complies with  this
Plan  and  any  applicable  federal  or  state  securities  laws,  may  take all
reasonable  steps,  including  placing  stop  transfer  instructions  with   the
Corporation's  transfer agent prohibiting transfers in violation of the Plan and
affixing the following legend (and/or such other legend or legends as the  Board
of Directors shall require) on certificates evidencing the shares:
 
       "THE   SHARES  REPRESENTED  BY  THIS  CERTIFICATE  HAVE  NOT  BEEN
       REGISTERED UNDER THE SECURITIES ACT  OF 1933, AS AMENDED, AND  MAY
       NOT  BE SOLD,  PLEDGED, HYPOTHECATED  OR OTHERWISE  TRANSFERRED OR
       OFFERED FOR  SALE  IN THE  ABSENCE  OF AN  EFFECTIVE  REGISTRATION
       STATEMENT  WITH RESPECT TO THEM UNDER THE ACT OR A WRITTEN OPINION
       OF  COUNSEL  FOR  THE  HOLDER  THEREOF,  WHICH  OPINION  SHALL  BE
       ACCEPTABLE  TO  PROFESSIONAL  BANCORP,  THAT  REGISTRATION  IS NOT
       REQUIRED."
 
Unless the shares of Common Stock covered by this Plan have been registered with
the Securities and Exchange Commission pursuant to the registration requirements
under the Securities Act of 1933, at any time that an Optionee contemplates  the
disposition  of any  of the  Option Shares (whether  by sale,  exchange, gift or
other form of transfer), he  or she shall first  notify the Corporation of  such
proposed  disposition  and shall  thereafter cooperate  with the  Corporation in
complying with  all applicable  requirements of  law which,  in the  opinion  of
counsel  for the  Corporation, must  be satisfied  prior to  the making  of such
disposition. Before consummating such disposition, the Optionee shall provide to
the Corporation an opinion of Optionee's counsel, of which both such opinion and
such counsel shall  be satisfactory  to the Corporation,  that such  disposition
will  not  result in  a violation  of any  state or  federal securities  laws or
regulations. The Corporation shall remove any legend affixed to certificates for
Option Shares pursuant to this  Section if and when  all of the restrictions  on
the  transfer of the Option  Shares, whether imposed by  this Plan or federal or
state law, have terminated.
 
    22.  NOTICES
 
    All notices  and demands  of any  kind  which the  Board of  Directors,  any
Optionee,  or other person may be required or desires to give under the terms of
this Plan shall be in  writing and shall be delivered  in hand to the person  or
persons  to  whom addressed  (in the  case  of the  Corporation, with  the Chief
Executive Officer, Chief Financial Officer or Secretary of the Corporation),  by
leaving a copy of such notice or demand at the address of such person or persons
as  may be  reflected in the  records of the  Corporation, or by  mailing a copy
thereof, properly addressed as  above, by certified  or registered mail  postage
prepaid,  with return receipt  requested. Delivery by mail  shall be deemed made
upon receipt by the notifying party of the return receipt request  acknowledging
receipt of the notice or demand.
 
                                      A-6
<PAGE>
    23.  LIMITATION ON OBLIGATIONS OF THE CORPORATION
 
    All obligations of the Corporation arising under or as a result of this Plan
or  Stock  Options  granted  hereunder shall  constitute  the  general unsecured
obligations of  the  Corporation, and  not  of the  Board  of Directors  of  the
Corporation,  any member thereof,  any officer of the  Corporation, or any other
person, and none of the foregoing,  except the Corporation, shall be liable  for
any debt, obligation, cost or expense hereunder.
 
    24.  SEVERABILITY
 
    If  any  provision  of  this  Plan  as  applied  to  any  person  or  to any
circumstance shall be adjudged by a court of competent jurisdiction to be  void,
invalid,  or unenforceable, the same shall in  no way affect any other provision
hereof, the application of any such provision in any other circumstances, or the
validity or enforceability hereof.
 
    25.  CONSTRUCTION
 
    Where the context or construction requires, all words applied in the  plural
herein shall be deemed to have been used in the singular and vice versa, and the
masculine gender shall include the feminine and the neuter and vice versa.
 
    26.  HEADINGS
 
    The  headings  of  the several  paragraphs  herein are  inserted  solely for
convenience of reference  and are not  intended to form  a part of  and are  not
intended  to govern, limit or  aid in the construction  of any term or provision
hereof.
 
    27.  SUCCESSORS
 
    This Plan shall be binding  upon the respective successors, assigns,  heirs,
executors,   administrators,  guardians  and  personal  representatives  of  the
Corporation and Optionees.
 
    28.  GOVERNING LAW
 
    To the extent not governed by the laws of the United States, this Plan shall
be governed  by and  construed  in accordance  with the  laws  of the  State  of
California.
 
    29.  CONFLICT
 
    In  the event of any conflict between the terms and provisions of this Plan,
and any other document, agreement or instrument, including, without meaning  any
limitation,  any Stock Option  Agreement, the terms and  provisions of this Plan
shall control.
 
                                      A-7
<PAGE>
PROXY
                           PROFESSIONAL BANCORP, INC.
                         ANNUAL MEETING OF SHAREHOLDERS
                                 JUNE 19, 1996
 
    The  undersigned shareholder  of Professional Bancorp,  Inc. (the "Company")
hereby nominates, constitutes and appoints Joel  W. Kovner and Lynn O.  Poulson,
and  each of them, the  attorney, agent and proxy  of the undersigned, with full
powers of  substitution,  to  vote  all  the stock  of  the  Company  which  the
undersigned  is entitled to  vote at the  Annual Meeting of  Shareholders of the
Company to be  held at the  Main office  of First Professional  Bank, N.A.,  606
Broadway,  Santa Monica, CA 90401, on Wednesday,  June 19, 1996 at 5:30 p.m. and
at any and all adjournments thereof, as fully and with the same force and effect
as the undersigned might or could do if personally present as follows:
 
    1.  ELECTION OF DIRECTORS.
 
    To elect the  seven persons  named below and  in the  Proxy Statement  dated
April 29, 1996, accompanying the Notice of said Meeting, to serve until the 1997
Annual  Meeting of Shareholders and until  their successors are elected and have
qualified:
 
 Richard A. Berger, James B. Jacobson, Ronald L. Katz, M.D., Anthony R. Kovner,
                                     Ph.D.
 Joel W. Kovner, Dr., P.H., MPH, Lynn O. Poulson, J.D., David G. Rodeffer, MPH
 
             AUTHORITY GIVEN  / /            AUTHORITY WITHHELD  / /
 
    IF YOU  WISH TO  WITHHOLD AUTHORITY  TO VOTE  FOR SOME  BUT NOT  ALL OF  THE
NOMINEES  NAMED ABOVE, YOU SHOULD CHECK THE BOX MARKED "AUTHORITY GIVEN" AND YOU
SHOULD ENTER THE  NAME(S) OF THE  NOMINEE(S) WITH  RESPECT TO WHOM  YOU WISH  TO
WITHHOLD AUTHORITY TO VOTE IN THE SPACE PROVIDED BELOW:
 
- --------------------------------------------------------------------------------
 
    2.   APPROVING THE  1996 NON-EMPLOYEE DIRECTOR  STOCK OPTION PLAN. Approving
the Company's  1996  Non-Employee Director  Stock  Option Plan  covering  50,000
shares of the Company's Common Stock.
            FOR  / /            AGAINST  / /            ABSTAIN  / /
- --------------------------------------------------------------------------------
 
    3.  RATIFICATION OF APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS. Ratifying
the  appointment of  the firm  of KPMG  Peat Marwick  LLP as  independent public
accountants of the Company for 1996.
 
            FOR  / /            AGAINST  / /            ABSTAIN  / /
 
                    PLEASE SIGN AND DATE ON THE REVERSE SIDE
<PAGE>
    THE BOARD OF DIRECTORS RECOMMENDS A VOTE OF "AUTHORITY GIVEN" ON PROPOSAL  1
AND "FOR" ON PROPOSAL 2 AND PROPOSAL 3. THE PROXY CONFERS AUTHORITY AND SHALL BE
VOTED  IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE BOARD OF DIRECTORS UNLESS A
CONTRARY INSTRUCTION IS  INDICATED, IN WHICH  CASE THE PROXY  SHALL BE VOTED  IN
ACCORDANCE  WITH SUCH INSTRUCTIONS.  IN ALL OTHER MATTERS,  IF ANY, PRESENTED AT
THE MEETING, THIS PROXY SHALL BE VOTED IN ACCORDANCE WITH THE RECOMMENDATIONS OF
THE BOARD OF DIRECTORS.
 
(Number of          DATED:  , 1996     (Please Print Your Name)
Shares)
                                       (Signature of Shareholder)
                                       (Please Print Your Name)
                                       (Signature of Shareholder)
                                       (Please date  this Proxy  and sign  your
                                       name   as  it   appears  on   the  stock
                                       certificates. Executors, administrators,
                                       trustees, etc., should  give their  full
                                       titles. All joint owners should sign.)
                                       I   do  do  not  expect  to  attend  the
                                       Meeting.
 
THIS PROXY IS SOLICITED ON BEHALF OF  THE COMPANY'S BOARD OF DIRECTORS, AND  MAY
BE  REVOKED PRIOR TO ITS EXERCISE BY  FILING WITH THE CORPORATE SECRETARY OF THE
COMPANY AN INSTRUMENT  REVOKING THIS PROXY  OR A DULY  EXECUTED PROXY BEARING  A
LATER DATE, OR BY APPEARING IN PERSON AND VOTING AT THE MEETING.


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