As filed with the Securities and Exchange Commission on August 1, 2001
                                                        Registration No. 333-

==============================================================================

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM S-8
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933



                            KERR-MCGEE HOLDCO, INC.
            (Exact name of Registrant as specified in its charter)


                Delaware                             73-1612389
     (State or other jurisdiction of              (I.R.S. Employer
      incorporation or organization)           Identification Number)

                            Kerr-McGee Holdco, Inc.
                           123 Robert S. Kerr Avenue
                         Oklahoma City, Oklahoma 73102
   (Address, including zip code, of Registrant's principal executive office)

                Kerr-McGee Corporation Savings Investment Plan
             Kerr-McGee Corporation Employee Stock Ownership Plan
     HS Resources, Inc. Employee Investment 401(k) and Profit Sharing Plan
                           (Full title of the Plans)



                           Gregory F. Pilcher, Esq.
             Senior Vice President, General Counsel and Secretary
                            Kerr-McGee Holdco, Inc.
                           123 Robert S. Kerr Avenue
                         Oklahoma City, Oklahoma 73102
                                (405) 270-1313

               (Name, address, including zip code, and telephone
        number, including area code, of Registrant's agent for service)
                                  Copies to:

                             Peter J. Gordon, Esq.
                          Simpson Thacher & Bartlett
                             425 Lexington Avenue
                         New York, New York 10017-3954
                                (212) 455-2000

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

                                     CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>

                                                                        Proposed
                                                                        Maximum
                                                                        Offering     Proposed Maximum       Amount of
                                                     Amount to be      Price Per         Aggregate        Registration
       Title of Securities to be Registered           Registered         Share        Offering Price          Fee
--------------------------------------------------- ---------------- --------------- ------------------   -------------
<S>                                                 <C>              <C>             <C>                  <C>

Common Stock, $1.00 par value per share(a)(b)....   1,718,782         $58.92(c)       $101,270,635.44(c)  $25,317.66(c)

<FN>
(a)   Includes certain rights issued to the holders of Common Stock pursuant to
      a rights agreement.
(b)   The shares are issuable pursuant to the respective Plans as follows:
      Kerr-McGee Corporation Savings Investment Plan--300,000 shares,
      Kerr-McGee Corporation Employee Stock Ownership Plan--1,088,037 shares;
      and HS Resources, Inc. Employee Investment 401(k) and Profit Sharing
      Plan--330,745 shares.
(c)   Pursuant to Rule 457(h)(1) under the Securities Act of 1933, the
      proposed maximum offering price per share, the proposed maximum
      aggregate offering price and the amount of registration fee have been
      computed on the basis of the average of the high and low prices of the
      Common Stock reported on the New York Stock Exchange Composite Tape on
      July 25, 2001.
</FN>
</TABLE>

In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
registration statement also covers an indeterminate amount of interests to be
offered or sold pursuant to the employee benefit plans described above.


<PAGE>




                                    PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

      The following documents filed by Kerr-McGee Holdco, Inc. (the "Company"
or the "Registrant") with the Securities and Exchange Commission (the
"Commission") pursuant to the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), are hereby incorporated by reference in this Registration
Statement:

     (a)  The Annual Report of Kerr-McGee Corporation on Form 10-K for the
          fiscal year ended December 31, 2000.

     (b)  The Quarterly Report of Kerr-McGee Corporation on Form 10-Q for the
          fiscal quarter ending March 31, 2001.

     (c)  The Quarterly Report of Kerr-McGee Corporation on Form 10-Q for the
          fiscal quarter ended June 30, 2001.

     (d)  The Current Reports of Kerr-McGee Corporation on Form 8-K filed
          on January 17, 2001, February 20, 2001, March 19, 2001, March 23,
          2001, April 10, 2001, May 14, 2001, May 15, 2001, May 16,
          2001, May 24, 2001, June 25, 2001 and July 20, 2001.

     (e)  The  description of the Company's Common Stock contained in the
          Company's Registration Statement on Form S-4 dated June 28,
          2001 (file No. 333-61898).

     (f)  The description of certain rights issued to holder of the
          Company's Common Stock contained in the Company's Registration
          Statement on Form 8-A dated July 27, 2001.

     (g)  The annual report of the Kerr-McGee Corporation Savings
          Investment Plan on Form 11-K as filed pursuant to the Exchange
          Act on June 28, 2001.

     (h)  The annual report of the Kerr-McGee Corporation Employee Stock
          Ownership Plan on Form 11-K as filed pursuant to the Exchange
          Act on June 28, 2001.

     (i)  The annual report of the HS Resources Inc. 401(k) and Profit
          Sharing Plan on Form 11-K as filed pursuant to the Exchange Act
          on June 22, 2001.

      All documents filed by the Company pursuant to Section 13(a), 13(c), 14
and 15(d) of the Exchange Act after the date of this Registration Statement
and prior to the filing of a post-effective amendment to this Registration
Statement indicating that all securities offered have been sold or which
deregisters all securities then remaining unsold, shall be deemed to be
incorporated by reference into this Registration Statement and to be part
hereof from the date of filing of such documents. Any statement contained in a
document incorporated or deemed to be 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
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 required.

Item 5. Interests of Named Experts and Counsel

      None.

Item 6. Indemnification of Directors and Officers

      Section 145 of the General Corporation Law of the State of Delaware
empowers a Delaware corporation to indemnify any persons who are, or are
threatened to be made, parties to any threatened, pending or completed legal
action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of such corporation),
by reason of the fact that such person is or was an officer, director,
employee or agent of such corporation, or is or was serving at the request of
such corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines
and amounts paid in settlement actually and reasonably incurred by such person
in connection with such action, suit or proceeding, provided that such
officer, director, employee or agent acted in good faith and in a manner he
reasonably believed to be in or not opposed to the corporation's best
interests, and, for criminal proceedings, had no reasonable cause to believe
his conduct was unlawful. A Delaware corporation may indemnify officers and
directors in an action by or in the right of the corporation under the same
conditions, except that no indemnification is permitted without judicial
approval if the officer or director is adjudged to be liable to the
corporation. Where an officer or director is successful on the merits or
otherwise in the defense of any action referred to above, the corporation must
indemnify him against the expenses which such officer or director actually and
reasonably incurred.

      The Company's Amended and Restated Certificate of Incorporation provides
that the Company shall indemnify directors and officers made party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative, including appeals, to the fullest
extent permitted by the laws of the State of Delaware. Such indemnification
shall continue after an individual ceases to be an officer or director and
shall inure to the benefit of the heirs, executors and administrators of such
person. The Amended and Restated Company's Certificate of Incorporation also
provides that a director of the Company shall not be personally liable to the
Company or its stockholders for monetary damages for breach of fiduciary duty
as a director, except to the extent such exemption from liability or
limitation thereof is not permitted under the General Corporation Law of the
State of Delaware as the same exists or may hereafter be amended.

      The indemnification rights conferred by the Amended and Restated
Certificate of Incorporation of the Company are not exclusive of any other
right to which a person seeking indemnification may otherwise be entitled. The
Company will also provide liability insurance for the directors and officers
for certain losses arising from claims or charges made against them while
acting in their capacities as directors or officers.

      Article XXII of the Amended Restated By-Laws of the Company contains
provisions regarding indemnification which parallels those described above.

Item 7. Exemption from Registration Claimed

      Not applicable.

Item 8. Exhibits

      The following exhibits are filed as part of this Registration Statement:

     4.1   Form of Amended and Restated Certificate of Incorporation of the
           Company (incorporated herein by reference to Exhibit 4.1 to
           the Registration Statement on Form S-4 dated June 28, 2001)

     4.2   Form of Amended and Restated By-Laws of the Company
           (incorporated herein by reference to Exhibit 4.2 to
           the Registration Statement on Form S-4 dated June 28,
           2001)

     4.3   Rights  Agreement, dated as of July 26, 2001, by and between the
           Company and UMB Bank, N.A. (incorporated herein by reference to
           Exhibit 4.1 to the Company's Registration Statement on Form 8-A
           filed on July 27, 2001)

     4.4   First Amendment to Rights Agreement, dated as of July 30, 2001, by
           and between the Company and UMB Bank, N.A. (incorporated herein by
           reference to Exhibit 4.1 to the Company's Registration Statement
           on Form 8-A/A filed on August 1, 2001)

     5     Opinion of Gregory F. Pilcher, Esq., Director, Senior  Vice
           President, General Counsel and Secretary

     23.1  Consent of Arthur Andersen LLP

     23.2  Consent of Arthur Andersen LLP

     23.3  Consent of PricewaterhouseCoopers LLP

     23.4  Consent of Gregory F. Pilcher, Esq. (included in Exhibit 5)



<PAGE>



Item 9. Undertakings

The undersigned Registrant hereby undertakes:

(1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement;

     (i)    to include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933 (the "Act");

     (ii)   to reflect in the prospectus any facts or events arising after the
effective date of this 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 this
Registration Statement (except to the extent the information required to be
included by clauses (i) or (ii) is contained in periodic reports filed by the
Company pursuant to Section 13 or 15(d) of the Exchange Act that are
incorporated by reference into this Registration Statement);

     (iii)  to include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement.

(2)  That, for the purposes of determining any liability under the 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.

(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.

(4)  That, for purposes of determining any liability under the Act, each filing
of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the
Exchange Act (and each filing of the Plan's annual report pursuant to Section
15(d) of the Exchange Act) that is incorporated by reference in this
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.

(5)  To submit the Company's Plans and any amendments to such plans to the
Internal Revenue Service (the "IRS") in a timely manner and to make all
changes required by the IRS in order to qualify such plans under Section 401
of the Internal Revenue Code of 1986.

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



<PAGE>


                                  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 Oklahoma City, State of Oklahoma, on
this 1st day of August, 2001.


                                           KERR-MCGEE HOLDCO, INC.
                                               (Registrant)





                                           By     /s/ Luke R. Corbett
                                               ---------------------------
                                                  Luke R. Corbett
                                                  Chairman of the Board and
                                                    Chief Executive 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 and on the date indicated.


      Signature                           Title                  Date
      ---------                           -----                  ----

/s/  Luke R. Corbett       Director, Chairman of the Board    August 1, 2001
-------------------------  and Chief Executive Officer
     Luke R. Corbett       (principal executive officer)

/s/  Robert M. Wohleber    Director, Senior Vice President    August 1, 2001
-------------------------  and Chief Financial Officer
     Robert M. Wohleber    (principal financial and
                           accounting officer)

/s/  Gregory F. Pilcher    Director, Senior Vice President,   August 1, 2001
-------------------------  General Counsel and Secretary
     Gregory F. Pilcher


<PAGE>


       Pursuant to the requirements of the Securities Act of 1933, the
appropriate person (or other persons who administer the Kerr-McGee Corporation
Savings Investment Plan, the Kerr-McGee Corporation Employee Stock Ownership
Plan and the HS Resources, Inc. Employee Investment 401(k) and Profit Sharing
Plan) has duly caused this Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Oklahoma City,
State of Oklahoma, on the 1st day of August, 2001.


                            Kerr-McGee Corporation Savings Plan, Kerr-McGee
                            Corporation Employee Stock Ownership Plan and HS
                            Resources, Inc. Employee Investment 401(k) and
                            Profit Sharing Plan





                            By    /s/   John M. Rauh
                               -------------------------------
                               Name:    John M. Rauh
                               Title:   Chairman
                                        Kerr-McGee Holdco, Inc.
                                        Benefit Committee







<PAGE>



                                    INDEX TO EXHIBITS


Exhibit
Number                                  Description

4.1                      Form of Amended and Restated Certificate of
                         Incorporation of the Company (incorporated herein
                         by  reference to Exhibit 4.1 to the Registration
                         Statement on Form S-4 dated June 28, 2001)

4.2                      Form of Amended and Restated By-Laws of the Company
                         (incorporated herein by reference to Exhibit 4.2 to
                         the Registration Statement on Form S-4 dated June 28,
                         2001)

4.3                      Rights  Agreement, dated as of July 26, 2001, by
                         and between the Company and UMB Bank, N.A.
                         (incorporated  herein by reference to Exhibit 4.1
                         to the  Company's  Registration  Statement on Form
                         8-A filed on July 27, 2001)

4.4                      First Amendment to Rights Agreement, dated as of
                         July 30, 2001, by and between the Company and UMB
                         Bank, N.A. (incorporated herein by reference to
                         Exhibit 4.1 to the Company's Registration Statement
                         on Form 8-A/A filed on August 1, 2001)

5                        Opinion of Gregory F. Pilcher, Esq., Director,
                         Senior Vice President, General Counsel and Secretary

23.1                     Consent of Arthur Andersen LLP

23.2                     Consent of Arthur Andersen LLP

23.3                     Consent of PricewaterhouseCoopers LLP

23.4                     Consent of Gregory F. Pilcher, Esq. (included
                         in Exhibit 5)
[{"type": "S-8", "sequence": "1", "filename": "forms8.txt", "description": "REGISTRATION STATEMENT", "secsgml_size_bytes": 20455}]
{"company-data": {"conformed-name": "KERR MCGEE HOLDCO INC", "cik": "0001141185", "assigned-sic": "1311", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-66440", "film-number": "1695066"}, "business-address": {"street1": "KEN MCGEE CENTER", "city": "OKLAHOMA CITY", "state": "OK", "zip": "73125", "phone": "4053701313"}, "mail-address": {"street1": "EN MCGEE CENTER", "city": "OKLAHOMA CITY", "state": "OK", "zip": "73125"}, "former-company": {"former-conformed-name": "KING HOLDCO INC", "date-changed": "20010523"}}
As filed with the Securities and Exchange Commission on August 1, 2001
                                                        Registration No. 333-

==============================================================================

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM S-8
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933

                            KERR-MCGEE HOLDCO, INC.
            (Exact name of Registrant as specified in its charter)

                Delaware                             73-1612389
     (State or other jurisdiction of              (I.R.S. Employer
      incorporation or organization)           Identification Number)

                            Kerr-McGee Holdco, Inc.
                           123 Robert S. Kerr Avenue
                         Oklahoma City, Oklahoma 73102
   (Address, including zip code, of Registrant's principal executive office)

                Kerr-McGee Corporation Savings Investment Plan
             Kerr-McGee Corporation Employee Stock Ownership Plan
     HS Resources, Inc. Employee Investment 401(k) and Profit Sharing Plan
                           (Full title of the Plans)

                           Gregory F. Pilcher, Esq.
             Senior Vice President, General Counsel and Secretary
                            Kerr-McGee Holdco, Inc.
                           123 Robert S. Kerr Avenue
                         Oklahoma City, Oklahoma 73102
                                (405) 270-1313

               (Name, address, including zip code, and telephone
        number, including area code, of Registrant's agent for service)
                                  Copies to:

                             Peter J. Gordon, Esq.
                          Simpson Thacher & Bartlett
                             425 Lexington Avenue
                         New York, New York 10017-3954
                                (212) 455-2000

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

                                     CALCULATION OF REGISTRATION FEE
Proposed
                                                                        Maximum
                                                                        Offering     Proposed Maximum       Amount of
                                                     Amount to be      Price Per         Aggregate        Registration
       Title of Securities to be Registered           Registered         Share        Offering Price          Fee
--------------------------------------------------- ---------------- --------------- ------------------   -------------
Common Stock, $1.00 par value per share(a)(b)....   1,718,782         $58.92(c)       $101,270,635.44(c)  $25,317.66(c)
(a)   Includes certain rights issued to the holders of Common Stock pursuant to
      a rights agreement.
(b)   The shares are issuable pursuant to the respective Plans as follows:
      Kerr-McGee Corporation Savings Investment Plan--300,000 shares,
      Kerr-McGee Corporation Employee Stock Ownership Plan--1,088,037 shares;
      and HS Resources, Inc. Employee Investment 401(k) and Profit Sharing
      Plan--330,745 shares.
(c)   Pursuant to Rule 457(h)(1) under the Securities Act of 1933, the
      proposed maximum offering price per share, the proposed maximum
      aggregate offering price and the amount of registration fee have been
      computed on the basis of the average of the high and low prices of the
      Common Stock reported on the New York Stock Exchange Composite Tape on
      July 25, 2001.
In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
registration statement also covers an indeterminate amount of interests to be
offered or sold pursuant to the employee benefit plans described above.
PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

      The following documents filed by Kerr-McGee Holdco, Inc. (the "Company"
or the "Registrant") with the Securities and Exchange Commission (the
"Commission") pursuant to the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), are hereby incorporated by reference in this Registration
Statement:

     (a)  The Annual Report of Kerr-McGee Corporation on Form 10-K for the
          fiscal year ended December 31, 2000.

     (b)  The Quarterly Report of Kerr-McGee Corporation on Form 10-Q for the
          fiscal quarter ending March 31, 2001.

     (c)  The Quarterly Report of Kerr-McGee Corporation on Form 10-Q for the
          fiscal quarter ended June 30, 2001.

     (d)  The Current Reports of Kerr-McGee Corporation on Form 8-K filed
          on January 17, 2001, February 20, 2001, March 19, 2001, March 23,
          2001, April 10, 2001, May 14, 2001, May 15, 2001, May 16,
          2001, May 24, 2001, June 25, 2001 and July 20, 2001.

     (e)  The  description of the Company's Common Stock contained in the
          Company's Registration Statement on Form S-4 dated June 28,
          2001 (file No. 333-61898).

     (f)  The description of certain rights issued to holder of the
          Company's Common Stock contained in the Company's Registration
          Statement on Form 8-A dated July 27, 2001.

     (g)  The annual report of the Kerr-McGee Corporation Savings
          Investment Plan on Form 11-K as filed pursuant to the Exchange
          Act on June 28, 2001.

     (h)  The annual report of the Kerr-McGee Corporation Employee Stock
          Ownership Plan on Form 11-K as filed pursuant to the Exchange
          Act on June 28, 2001.

     (i)  The annual report of the HS Resources Inc. 401(k) and Profit
          Sharing Plan on Form 11-K as filed pursuant to the Exchange Act
          on June 22, 2001.

      All documents filed by the Company pursuant to Section 13(a), 13(c), 14
and 15(d) of the Exchange Act after the date of this Registration Statement
and prior to the filing of a post-effective amendment to this Registration
Statement indicating that all securities offered have been sold or which
deregisters all securities then remaining unsold, shall be deemed to be
incorporated by reference into this Registration Statement and to be part
hereof from the date of filing of such documents. Any statement contained in a
document incorporated or deemed to be 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
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 required.

Item 5. Interests of Named Experts and Counsel

      None.

Item 6. Indemnification of Directors and Officers

      Section 145 of the General Corporation Law of the State of Delaware
empowers a Delaware corporation to indemnify any persons who are, or are
threatened to be made, parties to any threatened, pending or completed legal
action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of such corporation),
by reason of the fact that such person is or was an officer, director,
employee or agent of such corporation, or is or was serving at the request of
such corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise. The
indemnity may include expenses (including attorneys' fees), judgments, fines
and amounts paid in settlement actually and reasonably incurred by such person
in connection with such action, suit or proceeding, provided that such
officer, director, employee or agent acted in good faith and in a manner he
reasonably believed to be in or not opposed to the corporation's best
interests, and, for criminal proceedings, had no reasonable cause to believe
his conduct was unlawful. A Delaware corporation may indemnify officers and
directors in an action by or in the right of the corporation under the same
conditions, except that no indemnification is permitted without judicial
approval if the officer or director is adjudged to be liable to the
corporation. Where an officer or director is successful on the merits or
otherwise in the defense of any action referred to above, the corporation must
indemnify him against the expenses which such officer or director actually and
reasonably incurred.

      The Company's Amended and Restated Certificate of Incorporation provides
that the Company shall indemnify directors and officers made party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative, including appeals, to the fullest
extent permitted by the laws of the State of Delaware. Such indemnification
shall continue after an individual ceases to be an officer or director and
shall inure to the benefit of the heirs, executors and administrators of such
person. The Amended and Restated Company's Certificate of Incorporation also
provides that a director of the Company shall not be personally liable to the
Company or its stockholders for monetary damages for breach of fiduciary duty
as a director, except to the extent such exemption from liability or
limitation thereof is not permitted under the General Corporation Law of the
State of Delaware as the same exists or may hereafter be amended.

      The indemnification rights conferred by the Amended and Restated
Certificate of Incorporation of the Company are not exclusive of any other
right to which a person seeking indemnification may otherwise be entitled. The
Company will also provide liability insurance for the directors and officers
for certain losses arising from claims or charges made against them while
acting in their capacities as directors or officers.

      Article XXII of the Amended Restated By-Laws of the Company contains
provisions regarding indemnification which parallels those described above.

Item 7. Exemption from Registration Claimed

      Not applicable.

Item 8. Exhibits

      The following exhibits are filed as part of this Registration Statement:

     4.1   Form of Amended and Restated Certificate of Incorporation of the
           Company (incorporated herein by reference to Exhibit 4.1 to
           the Registration Statement on Form S-4 dated June 28, 2001)

     4.2   Form of Amended and Restated By-Laws of the Company
           (incorporated herein by reference to Exhibit 4.2 to
           the Registration Statement on Form S-4 dated June 28,
           2001)

     4.3   Rights  Agreement, dated as of July 26, 2001, by and between the
           Company and UMB Bank, N.A. (incorporated herein by reference to
           Exhibit 4.1 to the Company's Registration Statement on Form 8-A
           filed on July 27, 2001)

     4.4   First Amendment to Rights Agreement, dated as of July 30, 2001, by
           and between the Company and UMB Bank, N.A. (incorporated herein by
           reference to Exhibit 4.1 to the Company's Registration Statement
           on Form 8-A/A filed on August 1, 2001)

     5     Opinion of Gregory F. Pilcher, Esq., Director, Senior  Vice
           President, General Counsel and Secretary

     23.1  Consent of Arthur Andersen LLP

     23.2  Consent of Arthur Andersen LLP

     23.3  Consent of PricewaterhouseCoopers LLP

     23.4  Consent of Gregory F. Pilcher, Esq. (included in Exhibit 5)
Item 9. Undertakings

The undersigned Registrant hereby undertakes:

(1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement;

     (i)    to include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933 (the "Act");

     (ii)   to reflect in the prospectus any facts or events arising after the
effective date of this 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 this
Registration Statement (except to the extent the information required to be
included by clauses (i) or (ii) is contained in periodic reports filed by the
Company pursuant to Section 13 or 15(d) of the Exchange Act that are
incorporated by reference into this Registration Statement);

     (iii)  to include any material information with respect to the plan of
distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement.

(2)  That, for the purposes of determining any liability under the 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.

(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.

(4)  That, for purposes of determining any liability under the Act, each filing
of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the
Exchange Act (and each filing of the Plan's annual report pursuant to Section
15(d) of the Exchange Act) that is incorporated by reference in this
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.

(5)  To submit the Company's Plans and any amendments to such plans to the
Internal Revenue Service (the "IRS") in a timely manner and to make all
changes required by the IRS in order to qualify such plans under Section 401
of the Internal Revenue Code of 1986.

(6)  Insofar as indemnification for liabilities arising under the Act may be
permitted to directors, officers and controlling persons of the Registrant
pursuant to the foregoing provisions, or otherwise, the Registrant has been
advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Act and is, therefore, unenforceable. In the
event that a claim for indemnification against such liabilities (other than
the payment by the Registrant of expenses incurred or paid by a director,
officer or controlling person of the Registrant in the successful defense of
any action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the
Registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the 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 Oklahoma City, State of Oklahoma, on
this 1st day of August, 2001.

                                           KERR-MCGEE HOLDCO, INC.
                                               (Registrant)

                                           By     /s/ Luke R. Corbett
                                               ---------------------------
                                                  Luke R. Corbett
                                                  Chairman of the Board and
                                                    Chief Executive 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 and on the date indicated.

      Signature                           Title                  Date
      ---------                           -----                  ----

/s/  Luke R. Corbett       Director, Chairman of the Board    August 1, 2001
-------------------------  and Chief Executive Officer
     Luke R. Corbett       (principal executive officer)

/s/  Robert M. Wohleber    Director, Senior Vice President    August 1, 2001
-------------------------  and Chief Financial Officer
     Robert M. Wohleber    (principal financial and
                           accounting officer)

/s/  Gregory F. Pilcher    Director, Senior Vice President,   August 1, 2001
-------------------------  General Counsel and Secretary
     Gregory F. Pilcher
Pursuant to the requirements of the Securities Act of 1933, the
appropriate person (or other persons who administer the Kerr-McGee Corporation
Savings Investment Plan, the Kerr-McGee Corporation Employee Stock Ownership
Plan and the HS Resources, Inc. Employee Investment 401(k) and Profit Sharing
Plan) has duly caused this Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Oklahoma City,
State of Oklahoma, on the 1st day of August, 2001.

                            Kerr-McGee Corporation Savings Plan, Kerr-McGee
                            Corporation Employee Stock Ownership Plan and HS
                            Resources, Inc. Employee Investment 401(k) and
                            Profit Sharing Plan

                            By    /s/   John M. Rauh
                               -------------------------------
                               Name:    John M. Rauh
                               Title:   Chairman
                                        Kerr-McGee Holdco, Inc.
                                        Benefit Committee
INDEX TO EXHIBITS

Exhibit
Number                                  Description

4.1                      Form of Amended and Restated Certificate of
                         Incorporation of the Company (incorporated herein
                         by  reference to Exhibit 4.1 to the Registration
                         Statement on Form S-4 dated June 28, 2001)

4.2                      Form of Amended and Restated By-Laws of the Company
                         (incorporated herein by reference to Exhibit 4.2 to
                         the Registration Statement on Form S-4 dated June 28,
                         2001)

4.3                      Rights  Agreement, dated as of July 26, 2001, by
                         and between the Company and UMB Bank, N.A.
                         (incorporated  herein by reference to Exhibit 4.1
                         to the  Company's  Registration  Statement on Form
                         8-A filed on July 27, 2001)

4.4                      First Amendment to Rights Agreement, dated as of
                         July 30, 2001, by and between the Company and UMB
                         Bank, N.A. (incorporated herein by reference to
                         Exhibit 4.1 to the Company's Registration Statement
                         on Form 8-A/A filed on August 1, 2001)

5                        Opinion of Gregory F. Pilcher, Esq., Director,
                         Senior Vice President, General Counsel and Secretary

23.1                     Consent of Arthur Andersen LLP

23.2                     Consent of Arthur Andersen LLP

23.3                     Consent of PricewaterhouseCoopers LLP

23.4                     Consent of Gregory F. Pilcher, Esq. (included
                         in Exhibit 5)