AS FILED  WITH THE  SECURITIES  AND  EXCHANGE  COMMISSION  ON  FEBURARY  3, 2006
                                                     REGISTRATION NO. 333-128793


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                         POST-EFFECTIVE AMENDMENT NO. 1

                                       ON

                                    FORM S-8

                                       TO

                                    FORM S-4

                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933

                                Sun Bancorp, Inc.
             (Exact name of registrant as specified in its charter)

New Jersey                                                       52-1382541
(State or other jurisdiction of incorporation or              (I.R.S. Employer
   organization)                                             Identification No.)

                                226 Landis Avenue
                           Vineland, New Jersey 08360
                    (Address of Principal Executive Offices)

                      Advantage Bank 1999 Stock Option Plan
        Advantage Bank 1999 Stock Option Plan for Non-Employee Directors
        Advantage Bank 2001 Stock Option Plan for Non-Employee Directors
        Advantage Bank 2002 Stock Option Plan for Non-Employee Directors
                            (Full Title of the Plans)

                                  Dan A. Chila
                             Chief Financial Officer
                                226 Landis Avenue
                           Vineland, New Jersey 08360
                                 (856) 691-7700
                     (Name and address of agent for service)

                                   Copies to:
                               Richard Fisch, Esq.
                            Malizia Spidi & Fisch, PC
                             901 New York Avenue, NW
                                 Suite 210 East
                              Washington, DC 20001
                                 (202) 434-4660



                         CALCULATION OF REGISTRATION FEE


========================================================================================================
    Title of                               Proposed Maximum    Proposed Maximum        Amount of
Securities to           Amount to be            Offering       Aggregate Offering    Registration
be Registered          Registered (1)      Price Per Share(1)      Price (1)              Fee
- -------------          --------------      ------------------      ---------              ---
                                                                         
Common Stock
$1.00 par value         160,862 shares             N/A                 N/A               (2)
per share


(1)  The maximum  number of shares of Common Stock  issuable upon awards granted
     under:  (i) the Advantage  Bank 1999 Stock Option Plan,  (ii) the Advantage
     Bank 1999 Stock Option Plan for Non-Employee Directors, (iii) the Advantage
     Bank  2001  Stock  Option  Plan for  Non-Employee  Directors,  and (iv) the
     Advantage Bank 2002 Stock Option Plan for Non-Employee Directors ((i)-(iv),
     collectively, the "Stock  Option  Plans")  consists of 160,862 shares along
     with an indeterminate  number of additional shares which may be offered and
     issued to prevent dilution resulting from stock splits,  stock dividends or
     similar transactions.
(2)  All filing fees payable in connection with the registration of the issuance
     of  these  securities  were  paid in  connection  with  the  filing  of the
     Registrant's  Form S-4  Registration  Statement  (333-128793) on October 3,
     2005.

         This amendment shall become effective in accordance with the provisions
of Rule 464 promulgated under the Securities Act of 1933.



                                EXPLANATORY NOTE

         This Post-Effective Amendment No. 1 on Form S-8 amends the Registration
Statement  (File No.  333-128793)  previously  filed on Form S-4 (together  with
Pre-Effective  Amendment No. 1, the "Original  Registration  Statement")  by Sun
Bancorp,  Inc. (the  "Company") in connection  with the merger (the "Merger") of
Advantage  Bank  ("Advantage")  with and into Sun National  Bank, a wholly owned
subsidiary of the Company ("Sun Bank"). The Original  Registration  Statement as
amended by this  Post-Effective  Amendment  No. 1 is  referred  to herein as the
"Registration Statement."

         In connection with the filing of the Original  Registration  Statement,
1,159,880  shares of the common stock, par value $1.00 per share, of the Company
("Company  Common  Stock")  were  registered  with the  Securities  and Exchange
Commission (the "Commission") and the applicable filing fee was paid. The number
of shares so registered  pursuant to the Original  Registration  Statement  were
those  shares  expected to be  distributed  to the  holders of common  shares of
Advantage  ("Advantage Common Stock") and those shares which are necessary to be
distributed,  or reserved for issuance,  to Advantage employees and directors in
connection  with  (i) the  Advantage  Bank  1999  Stock  Option  Plan,  (ii) the
Advantage  Bank 1999 Stock  Option Plan for  Non-Employee  Directors,  (iii) the
Advantage  Bank 2001 Stock Option Plan for  Non-Employee  Directors and (iv) the
Advantage  Bank 2002 Stock  Option Plan for  Non-Employee  Directors  ((i)-(iv),
collectively, the "Stock Option Plans").

         Pursuant to the  Agreement  and Plan of Merger,  dated as of August 25,
2005, by and among the Company, Sun Bank and Advantage (the "Merger Agreement"),
each option to purchase  Advantage  Common Stock  granted under the Stock Option
Plans and  outstanding as of the effective time of the Merger was converted into
an option to purchase shares of Company Common Stock on  substantially  the same
terms and  conditions  applicable  under the Advantage  Option Plans and related
award  agreement,  except  that the  number of shares of  Company  Common  Stock
subject to each such option was  adjusted  to equal (a) the number of  Advantage
Common Stock subject to such option  multiplied by (b) 0.87 (rounded down to the
nearest whole share), and the exercise price per share was adjusted to equal (x)
the exercise price of the shares of Advantage Common Stock that were purchasable
pursuant to such option divided by 0.87 (rounded to the nearest whole cent).

         The Merger was completed on January 19, 2006.



                                     PART I

              INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

Item 1.  Plan Information*

Item 2.  Registrant Information and Employee Plan Annual Information

         Documents  containing  the  information  required  by  Part  I of  this
Registration  Statement will be sent or given to  participants  in the Advantage
Stock Option Plans in accordance  with Rule  428(b)(1).  In accordance with Rule
424  and in  reliance  on Rule  428,  such  documents  are not  filed  with  the
Commission either as part of this  Registration  Statement or as prospectuses or
prospectus supplements. The Company will maintain a file of such documents for a
period of five  years  after the date on which such  documents  are last used as
part of the prospectus  used to offer or sell shares of the Company Common Stock
pursuant to the Stock Option Plans.  Upon request,  the Company will furnish the
Commission  or its staff a copy of any or all such  documents  included  in this
file.

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3.  Incorporation of Documents by Reference.

         The following  documents  filed by the Company with the  Securities and
Exchange  Commission under the Securities  Exchange Act of 1934 are incorporated
herein by reference:

         (a) The  Company's  Annual  Report  on Form  10-K  for the  year  ended
December 31, 2004.

         (b) The Company's Quarterly Reports on Form 10-Q for the quarters ended
March 31, 2005, June 30, 2005 and September 30, 2005.

         (c) The  Company's  Current  Reports on Form 8-K filed on  January  25,
2005,  January 25, 2005,  March 17, 2005, April 14, 2005, May 18, 2005, June 17,
2005,  July 21,  2005,  August 12,  2005,  August 26,  2005,  October 18,  2005,
December 9, 2005, December 20, 2005, January 20, 2006 and January 25, 2006.

         (d) The  description  of the  Company  Common  Stock  set  forth in its
Registration Statement on Form 8-A filed with the Commission on June 28, 1996.

         All  documents  subsequently  filed by the Company  pursuant to Section
13(a),  13(c),  14 and  15(d) of the  Exchange  Act,  prior to the  filing  of a
post-effective amendment to this Registration Statement which indicates that all
of the shares of common stock  offered have been sold or which  deregisters  all
such  shares  then  remaining  unsold,  shall be  deemed to be



incorporated by reference in this Registration Statement and to be a part hereof
from the date of filing of such documents. Any statement contained in a document
incorporated or deemed  incorporated  by reference  herein shall be deemed to be
modified or superseded for purposes of this Registration Statement to the extent
that a statement  contained herein or in any other  subsequently  filed document
which also is or is deemed to be  incorporated  by reference  herein modifies or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, except as so modified or superseded, to constitute a part of this
Registration Statement.

Item 4.  Description of Securities.

         Not Applicable

Item 5.  Interests of Named Experts and Counsel.

         Not Applicable.

Item 6.  Indemnification of Directors and Officers.

         Section  14A:3-5 of the New Jersey  Business  Corporation Act describes
those circumstances under which directors, officers, employees and agents may be
insured  or  indemnified  against  liability  which  they  may  incur  in  their
capacities as such.

         Article VI of the Bylaws of the Company,  requires  indemnification  of
directors,  officers,  employees  or agents of the  Company  to the full  extent
permissible under New Jersey law.

         The registrant believes that these provisions assist the registrant in,
among other  things,  attracting  and retaining  qualified  persons to serve the
registrant and its subsidiary.  However, a result of such provisions could be to
increase the expenses of the  registrant and  effectively  reduce the ability of
stockholders  to sue on behalf of the registrant  because certain suits could be
barred or amounts that might  otherwise be obtained on behalf of the  registrant
could be required to be repaid by the registrant to an indemnified party.

         Under a directors' and officers' liability insurance policy,  directors
and officers of the Company are insured against certain  liabilities,  including
certain liabilities under the Securities Act of 1933.

         The Company may purchase and maintain insurance on behalf of any person
who is or was a director,  officer,  employee,  or agent of the Company or is or
was serving at the request of the Company as a director,  officer,  employee, or
agent of  another  corporation,  partnership,  joint  venture,  trust,  or other
enterprise against any liability asserted against the person and incurred by the
person in any such capacity or arising out of his status as such, whether or not
the Company would have the power to indemnify the person  against such liability
under the provisions of the Articles of Incorporation or the Bylaws.



         Additionally,  the  Company  has in force two  directors  and  officers
liability  policies for claims directly  against  directors and officers and for
claims where the Company is required to indemnify  directors and  officers.  The
first policy is  underwritten by Fidelity and Deposit Company of Maryland with a
$15.0  million  aggregate  limit of  liability  and an aggregate  deductible  of
$150,000 per loss. The second policy is underwritten  by Gulf Insurance  Company
with a $5.0  million  aggregate  limit of  liability  in excess of the first $15
million, with no additional deductible.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 ("1933  Act") may be permitted to  directors,  officers,  or persons
controlling the Company  pursuant to the foregoing  provisions,  the Company has
been informed that in the opinion of the Securities and Exchange Commission such
indemnification  is against  public  policy as  expressed in the 1933 Act and is
therefore unenforceable.

Item 7.  Exemption from Registration Claimed.

         Not Applicable.

Item 8.  Exhibits.

         For a  list  of  all  exhibits  filed  or  included  as  part  of  this
Registration Statement,  see "Index to Exhibits" at the end of this Registration
Statement.

Item 9.  Undertakings.

         A. The undersigned registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective  amendment to this registration  statement:  (i) to include any
prospectus  required  by Section  10(a)(3)  of the  Securities  Act of 1933,  as
amended (the "Securities  Act");  (ii) to reflect in the prospectus any facts or
events  arising after the effective date of the  registration  statement (or the
most recent  post-effective  amendment  thereof)  which,  individually or in the
aggregate,  represent a fundamental  change in the  information set forth in the
registration  statement;  and (iii) to include  any  material  information  with
respect to the plan of distribution not previously disclosed in the registration
statement  or any  material  change  to  such  information  in the  registration
statement;  provided,  however,  that  clauses  (i) and (ii) do not apply if the
information  required  to be  included in a  post-effective  amendment  by those
clauses  is  contained  in  periodic  reports  filed  with or  furnished  to the
Securities and Exchange  Commission by the registrant  pursuant to Section 13 or
Section  15(d) of the  Exchange  Act that are  incorporated  by reference in the
registration statement;

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act, each such  post-effective  amendment shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof; and



         (3) To remove from registration by means of a post effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         B. The undersigned  registrant  hereby undertakes that, for purposes of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
Registrant's  annual  report on Form 10-K  pursuant to Section  13(a) or Section
15(d) of the Securities  Exchange Act of 1934, as amended (the  "Exchange  Act")
that is incorporated by reference in the registration  statement shall be deemed
to be a new registration  statement  relating to the securities offered therein,
and the  offering  of such  securities  at that  time  shall be deemed to be the
initial bona fide offering thereof.

         C.  Insofar  as  indemnification  for  liabilities  arising  under  the
Securities Act may be permitted to directors,  officers and controlling  persons
of the  registrant  pursuant to the provisions  described  under Item 6 above or
otherwise, the registrant has been advised that in the opinion of the Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Securities Act and is, therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by the registrant of expenses incurred or paid by a director, officer or
controlling  person of the registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities being registered,  the registrant will, unless
in the  opinion  of its  counsel  the matter  has been  settled  by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.



                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Vineland, State of New Jersey, on February 3, 2006.



                                                SUN BANCORP, INC.


                                                By: /s/Dan A. Chila
                                                    ----------------------------
                                                    Dan A. Chila
                                                    Executive Vice President and
                                                    Chief Financial Officer

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
registration  statement  has been signed below by the  following  persons in the
capacities on February 3, 2006.



                                             

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Bernard A. Brown                                     Thomas A. Bracken
Chairman                                             President, Chief Executive Officer and
                                                     Director

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Ike Brown                                            Sidney R. Brown
Director                                             Vice Chairman, Secretary and Treasurer

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Jeffrey S. Brown                                     Peter Galetto, Jr.
Director                                             Director

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Douglas J. Heun                                      Charles P. Kaempffer
Director                                             Director

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Anne E. Koons                                        Eli Kramer
Director                                             Director






/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Alfonse M. Mattia                                    Audrey S. Oswell
Director                                             Director

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------                               -------------------------------
George A. Pruitt                                     Anthony Russo, III
Director                                             Director

/s/Dan A. Chila, Power of Attorney                   /s/Dan A. Chila, Power of Attorney
- ----------------------------------                   ----------------------------------
Edward H. Salmon                                     Howard M. Schoor
Director                                             Director


- ----------------------------------
John A. Fallone
Director


/s/Dan A. Chila
- ----------------------------------
Dan A. Chila
Executive Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)


- ----------------------
*   Signed pursuant to power of attorney.


                                  EXHIBIT INDEX

         The  following   exhibits  are  filed  as  part  of  this  registration
statement:


      
     2    Agreement  and Plan of  Merger by and among  Sun  Bancorp,  Inc.,  Sun
          National Bank and Advantage  Bank  (included as Exhibit A to the proxy
          statement/prospectus filed as part of this registration statement).**

     3(a) Amended and Restated Certificate of Incorporation of Sun Bancorp, Inc.*

     3(b) Amended and Restated Bylaws of Sun Bancorp, Inc. *

     5    Opinion  of  Malizia  Spidi  &Fisch,  PC as to  the  legality  of  the
          securities being registered **

     8    Tax Opinion of Malizia Spidi &Fisch, PC **

     23.1  Consent of Deloitte &Touche LLP (with respect to Sun Bancorp, Inc.)

     23.2  Consent of Sandler O'Neill &Partners, L.P.**

     23.3  Consent of Malizia Spidi &Fisch, PC (included in Exhibits 5 and 8)**

     24   Powers of Attorney (reference is made to the signature page)**

     99(a) Opinion of Sandler O'Neill &Partners,  L.P. (included as Exhibit B to
           the proxy  statement/prospectus  filed  as part of this  registration
           statement)**


- -----------------------
          *    Incorporated by reference to Sun Bancorp's Registration Statement
               on Form S-3 (Registration No. 333-109636).
          **   Previously filed.