UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

         Date of Report (Date of earliest event reported): June 13, 2006


                    RESIDENTIAL ASSET SECURITIES CORPORATION,
                   on behalf of the RASC Series 2006-KS4 Trust
             (Exact name of registrant as specified in its charter)

           Delaware                  333- 131209-03            51-0362653
 (State or other jurisdiction   (Commission File Number)     (IRS Employer
      of incorporation)                                   Identification No.)

    8400 Normandale Lake Boulevard, Suite 250
              Minneapolis, Minnesota                            55437
     (Address of principal executive office)                  (Zip Code)

                                 (952) 857-7000
              (Registrant's telephone number, including area code )


                                       N/A
             (Former name or address, if changed since last report)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ] Written communication  pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))



<PAGE>




                    INFORMATION TO BE INCLUDED IN THE REPORT

SECTION 8 - OTHER EVENTS.

ITEM 8.01.     OTHER EVENTS.


On May 30, 2006,  Residential Asset Securities  Corporation  caused the issuance
and sale of the Residential  Asset  Securities  Corporation Home Equity Mortgage
Asset-Backed Pass-Through Certificates,  Series 2006-KS4,  pursuant to a Pooling
and  Servicing  Agreement,  dated as of May 1,  2006,  among  Residential  Asset
Securities Corporation, as depositor, Residential Funding Corporation, as master
servicer and the U.S. Bank National Association,  as trustee. The mortgage loans
were sold to Residential Asset Securities  Corporation pursuant to an Assignment
and Assumption Agreement,  dated as of May 30, 2006, between Residential Funding
Corporation and Residential Asset Securities Corporation.

SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01 (D). EXHIBITS.


        (d)    Exhibits:  The following execution copies of Exhibits to the Form
               S-3 Registration Statement of the Registrant are hereby filed.

                  10.1    Pooling and  Servicing  Agreement,  dated as of May 1,
                          2006, among Residential Asset Securities  Corporation,
                          as  depositor,  Residential  Funding  Corporation,  as
                          master servicer,  U.S. Bank National  Association,  as
                          trustee and Clayton  Fixed Income  Services,  Inc., as
                          credit risk manager.

                  10.2    Assignment and Assumption  Agreement,  dated as of May
                          30, 2006, between  Residential Funding Corporation and
                          Residential Asset Securities Corporation.

                  10.3    Novation  Confirmation,  dated as of the May 30, 2006,
                          between U.S. Bank National Association,  as trustee on
                          behalf of the RASC  Series  2006-KS4  Trust,  and Bear
                          Stearns Financial Products Inc.

                  99.1    Mortgage Loan Schedule.



<PAGE>


                                   SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                   RESIDENTIAL ASSET SECURITIES CORPORATION



                                   By: /s/ Joseph Orning
                                       Name: Joseph Orning
                                       Title: Vice President




Dated:  June 13, 2006




<PAGE>

                                  Exhibit Index


Exhibit No.                  Description

10.1    Pooling  and  Servicing  Agreement,  dated  as of  May  1,  2006,  among
        Residential  Asset  Securities  Corporation,  as depositor,  Residential
        Funding Corporation, as master servicer, U.S. Bank National Association,
        as trustee and  Clayton  Fixed  Income  Services,  Inc.,  as credit risk
        manager.

10.2    Assignment and Assumption  Agreement,  dated as of May 30, 2006, between
        Residential   Funding   Corporation  and  Residential  Asset  Securities
        Corporation.

10.3    Novation  Confirmation,  dated as of the May 30, 2006, between U.S. Bank
        National  Association,  as trustee on behalf of the RASC Series 2006-KS4
        Trust, and Bear Stearns Financial Products Inc.

99.1    Mortgage Loan Schedule.
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{"company-data": {"conformed-name": "RASC Series 2006-KS4", "cik": "0001362534", "assigned-sic": "6189", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "333-131209-03", "film-number": "06904061"}, "business-address": {"street1": "8400 NORMANDALE LAKE BLVD", "street2": "SUITE 600", "city": "MINNEAPOLIS", "state": "MN", "zip": "55437", "phone": "9528327000"}, "mail-address": {"street1": "8400 NORMANDALE BLVD STE 6", "street2": "8400 NORMANDALE BLVD STE 6", "city": "MINNEAPOLIS", "state": "MN", "zip": "55437"}}
UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

         Date of Report (Date of earliest event reported): June 13, 2006

                    RESIDENTIAL ASSET SECURITIES CORPORATION,
                   on behalf of the RASC Series 2006-KS4 Trust
             (Exact name of registrant as specified in its charter)

           Delaware                  333- 131209-03            51-0362653
 (State or other jurisdiction   (Commission File Number)     (IRS Employer
      of incorporation)                                   Identification No.)

    8400 Normandale Lake Boulevard, Suite 250
              Minneapolis, Minnesota                            55437
     (Address of principal executive office)                  (Zip Code)

                                 (952) 857-7000
              (Registrant's telephone number, including area code )

                                       N/A
             (Former name or address, if changed since last report)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ] Written communication  pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))
INFORMATION TO BE INCLUDED IN THE REPORT

SECTION 8 - OTHER EVENTS.

ITEM 8.01.     OTHER EVENTS.

On May 30, 2006,  Residential Asset Securities  Corporation  caused the issuance
and sale of the Residential  Asset  Securities  Corporation Home Equity Mortgage
Asset-Backed Pass-Through Certificates,  Series 2006-KS4,  pursuant to a Pooling
and  Servicing  Agreement,  dated as of May 1,  2006,  among  Residential  Asset
Securities Corporation, as depositor, Residential Funding Corporation, as master
servicer and the U.S. Bank National Association,  as trustee. The mortgage loans
were sold to Residential Asset Securities  Corporation pursuant to an Assignment
and Assumption Agreement,  dated as of May 30, 2006, between Residential Funding
Corporation and Residential Asset Securities Corporation.

SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01 (D). EXHIBITS.

        (d)    Exhibits:  The following execution copies of Exhibits to the Form
               S-3 Registration Statement of the Registrant are hereby filed.

                  10.1    Pooling and  Servicing  Agreement,  dated as of May 1,
                          2006, among Residential Asset Securities  Corporation,
                          as  depositor,  Residential  Funding  Corporation,  as
                          master servicer,  U.S. Bank National  Association,  as
                          trustee and Clayton  Fixed Income  Services,  Inc., as
                          credit risk manager.

                  10.2    Assignment and Assumption  Agreement,  dated as of May
                          30, 2006, between  Residential Funding Corporation and
                          Residential Asset Securities Corporation.

                  10.3    Novation  Confirmation,  dated as of the May 30, 2006,
                          between U.S. Bank National Association,  as trustee on
                          behalf of the RASC  Series  2006-KS4  Trust,  and Bear
                          Stearns Financial Products Inc.

                  99.1    Mortgage Loan Schedule.
SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                   RESIDENTIAL ASSET SECURITIES CORPORATION

                                   By: /s/ Joseph Orning
                                       Name: Joseph Orning
                                       Title: Vice President

Dated:  June 13, 2006
Exhibit Index

Exhibit No.                  Description

10.1    Pooling  and  Servicing  Agreement,  dated  as of  May  1,  2006,  among
        Residential  Asset  Securities  Corporation,  as depositor,  Residential
        Funding Corporation, as master servicer, U.S. Bank National Association,
        as trustee and  Clayton  Fixed  Income  Services,  Inc.,  as credit risk
        manager.

10.2    Assignment and Assumption  Agreement,  dated as of May 30, 2006, between
        Residential   Funding   Corporation  and  Residential  Asset  Securities
        Corporation.

10.3    Novation  Confirmation,  dated as of the May 30, 2006, between U.S. Bank
        National  Association,  as trustee on behalf of the RASC Series 2006-KS4
        Trust, and Bear Stearns Financial Products Inc.

99.1    Mortgage Loan Schedule.