UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. __3__)*
Unocal Corp
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(Name of Issuer)
Common
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(Title of Class of Securities)
915289102
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(CUSIP Number)
December 31, 2003
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[X] Rule 13d-1(b)
[_] Rule 13d-1(c)
[_] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
PAGE 1 OF 4 PAGES
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CUSIP NO.915289102 13G PAGE 2 OF 4 PAGES
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1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Dodge & Cox 94-1441976
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_]
(b) [_]
N/A
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
California - U.S.A.
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5 SOLE VOTING POWER
NUMBER OF 26,134,744
SHARES -------------------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 269,300
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EACH 7 SOLE DISPOSITIVE POWER
REPORTING 27,901,694
PERSON -------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
WITH
0
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
27,901,694
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
N/A
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
10.8%
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12 TYPE OF REPORTING PERSON*
IA
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Item 1(a) Name of Issuer:
Unocal Corp
Item 1(b) Address of Issuer's Principal Executive Offices:
2141 Rosecrans Avenue, Suite 4000
El Segundo, CA 90245
Item 2(a) Name of Person Filing:
Dodge & Cox
Item 2(b) Address of the Principal Office or, if none, Residence:
One Sansome St., 35th Floor
San Francisco, CA 94104
Item 2(c) Citizenship:
California - U.S.A.
Item 2(d) Title of Class of Securities:
Common
Item 2(e) CUSIP Number:
915289102
Item 3 If the Statement is being filed pursuant to Rule 13d-1(b), or
13d-2(b), check whether the person filing is a:
(e) [X] Investment Advisor registered under section 203 of the
Investment Advisors Act of 1940
Item 4 Ownership:
(a) Amount Beneficially Owned:
27,901,694
(b) Percent of Class:
10.8%
PAGE 3 OF 4 PAGES
(c) Number of shares as to which such person has:
(i) sole power to vote or direct the vote: 26,134,744
(ii) shared power to vote or direct the vote: 269,300
(iii) sole power to dispose or to direct the disposition of:
27,901,694
(iv) shared power to dispose or to direct the disposition of: 0
Item 5 Ownership of Five Percent or Less of a Class:
Not applicable.
Item 6 Ownership of More than Five Percent on Behalf of Another
Person:
Securities reported on this Schedule 13G are beneficially owned
by clients of Dodge & Cox, which clients may include investment
companies registered under the Investment Company Act and/or
employee benefit plans, pension funds, endowment funds or other
institutional clients.
Item 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent Holding
Company:
Not applicable.
Item 8 Identification and Classification of Members of the Group:
Not applicable.
Item 9 Notice of Dissolution of a Group:
Not applicable.
Item 10 Certification:
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired in
the ordinary course of business and were not acquired for the
purpose of and do not have the effect of changing or
influencing the control of the issuer of such securities and
were not acquired in connection with or as a participant in
any transaction having such purpose or effect.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
Dated: February 17, 2004
DODGE & COX
By: /S/ THOMAS M. MISTELE
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Name: Thomas M. Mistele
Title: Vice President
PAGE 4 OF 4 PAGES