UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1 )*
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Prima Energy Corporation
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
741901201
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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).
13G
CUSIP No. 741901201
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1 NAME OF REPORTING PERSON /
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Artisan Partners Limited Partnership
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see Instructions)
(a) [ ]
Not Applicable
(b) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
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5 SOLE VOTING POWER
None
NUMBER OF
SHARES -----------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH 866,707
REPORTING
PERSON -----------------------------------------------------------------
WITH 7 SOLE DISPOSITIVE POWER
None
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8 SHARED DISPOSITIVE POWER
866,707
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
866,707
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES
(see Instructions)
Not Applicable
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.7%
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12 TYPE OF REPORTING PERSON
(see Instructions)
IA
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13G
CUSIP No. 741901201
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1 NAME OF REPORTING PERSON /
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Artisan Investment Corporation
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see Instructions)
(a) [ ]
Not Applicable
(b) [ ]
--------------------------------------------------------------------------------
3 SEC USE ONLY
--------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Wisconsin
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5 SOLE VOTING POWER
None
NUMBER OF
SHARES -----------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH 866,707
REPORTING
PERSON -----------------------------------------------------------------
WITH 7 SOLE DISPOSITIVE POWER
None
-------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
866,707
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
866,707
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES
(see Instructions)
Not Applicable
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.7%
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12 TYPE OF REPORTING PERSON
(see Instructions)
CO
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13G
CUSIP No. 741901201
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1 NAME OF REPORTING PERSON /
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Andrew A. Ziegler
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see Instructions)
(a) [ ]
Not Applicable
(b) [ ]
--------------------------------------------------------------------------------
3 SEC USE ONLY
--------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.A.
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5 SOLE VOTING POWER
None
NUMBER OF
SHARES -----------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH 866,707
REPORTING
PERSON -----------------------------------------------------------------
WITH 7 SOLE DISPOSITIVE POWER
None
-------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
866,707
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
866,707
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES
(see Instructions)
Not Applicable
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.7%
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12 TYPE OF REPORTING PERSON
(see Instructions)
IN
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13G
CUSIP No. 741901201
----------------
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1 NAME OF REPORTING PERSON /
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Carlene Murphy Ziegler
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see Instructions)
(a) [ ]
Not Applicable
(b) [ ]
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3 SEC USE ONLY
--------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.A.
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
None
NUMBER OF
SHARES -----------------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY
EACH 866,707
REPORTING
PERSON -----------------------------------------------------------------
WITH 7 SOLE DISPOSITIVE POWER
None
-------------------------------------------------------------
8 SHARED DISPOSITIVE POWER
866,707
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
866,707
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES
(see Instructions)
Not Applicable
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
6.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON
(see Instructions)
IN
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Item 1(a) Name of Issuer:
Prima Energy Corporation
Item 1(b) Address of Issuer's Principal Executive Offices:
1099 18th Street
Suite 400
Denver, CO 80202
Item 2(a) Name of Person Filing:
Artisan Partners Limited Partnership ("Artisan
Partners")
Artisan Investment Corporation, the general partner of
Artisan Partners ("Artisan Corp.")
Andrew A. Ziegler
Carlene Murphy Ziegler
Item 2(b) Address of Principal Business Office:
Artisan Partners, Artisan Corp., Mr. Ziegler and Ms.
Ziegler are all located at:
875 East Wisconsin Avenue, Suite 800
Milwaukee, Wisconsin 53202
Item 2(c) Citizenship:
Artisan Partners is a Delaware limited partnership
Artisan Corp. is a Wisconsin corporation
Mr. Ziegler and Ms. Ziegler are U.S. citizens
Item 2(d) Title of Class of Securities:
Common Stock
Item 2(e) CUSIP Number:
741901201
Item 3 Type of Person:
(e) Artisan Partners is an investment adviser registered
under section 203 of the Investment Advisers Act of
1940; Artisan Corp. is the General Partner of Artisan
Partners; Mr. Ziegler and Ms. Ziegler are the principal
stockholders of Artisan Corp.
Item 4 Ownership (at December 31, 2003):
(a) Amount owned "beneficially" within the meaning of
rule 13d-3:
866,707
(b) Percent of class:
6.7% (based on 12,910,142 shares outstanding as of
October 31, 2003)
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote: None
(ii) shared power to vote or to direct the vote:
866,707
(iii) sole power to dispose or to direct the
disposition of: None
(iv) shared power to dispose or to direct disposition
of: 866,707
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:
The shares reported herein have been acquired on behalf
of discretionary clients of Artisan Partners. Persons
other than Artisan Partners are entitled to receive all
dividends from, and proceeds from the sale of, those
shares. None of those persons, to the knowledge of
Artisan Partners, Artisan Corp., Mr. Ziegler or Ms.
Ziegler, has an economic interest in more than 5% of the
class.
Item 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on by the Parent
Holding Company or Control Person:
Not Applicable
Item 8 Identification and Classification of Members of the Group:
Not Applicable
Item 9 Notice of Dissolution of 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 and are held in the ordinary course of
business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not
acquired and are not held in connection with or as a
participant in any transaction having that purpose or
effect.
Signature
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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.
Date: January 23, 2004
ARTISAN INVESTMENT CORPORATION
for itself and as general partner of
ARTISAN PARTNERS LIMITED PARTNERSHIP
Janet D. Olsen*
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ANDREW A. ZIEGLER
Andrew A. Ziegler*
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CARLENE MURPHY ZIEGLER
Carlene Murphy Ziegler*
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*By: /s/ Janet D. Olsen
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Janet D. Olsen
Vice President of Artisan Investment Corporation
Attorney-in-Fact for Andrew A. Ziegler
Attorney-in-Fact for Carlene Murphy Ziegler
Exhibit Index
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Exhibit 1 Joint Filing Agreement dated as of January 23, 2004 by
and among Artisan Partners Limited Partnership, Artisan
Investment Corporation, Andrew A. Ziegler, and Carlene
Murphy Ziegler
Exhibit 2 Power of Attorney of Andrew A. Ziegler dated as of
April 2, 2002
Exhibit 3 Power of Attorney of Carlene M. Ziegler dated as of
April 2, 2002