-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, SihM1lTmcmRkWLL5u7pYZcJq+FUVgQPiOaoacvlO06ZXXq8GLpXLmN8DgQZ8Gd0s qHUQHtJ4SadhkYpXRIFipg== 0000052388-99-000010.txt : 19990215 0000052388-99-000010.hdr.sgml : 19990215 ACCESSION NUMBER: 0000052388-99-000010 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 19990212 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SWIFT ENERGY CO CENTRAL INDEX KEY: 0000351817 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 742073055 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-33333 FILM NUMBER: 99538211 BUSINESS ADDRESS: STREET 1: 16825 NORTHCHASE DR STE 400 CITY: HOUSTON STATE: TX ZIP: 77060 BUSINESS PHONE: 2818742700 MAIL ADDRESS: STREET 1: 16825 NORTHCHASE DRIVE STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77060 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: AMERICAN CENTURY INVESTMENT MANAGEMENT INC CENTRAL INDEX KEY: 0000052388 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 440640487 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: TWENTIETH CENTURY TOWER STREET 2: 4500 MAIN ST CITY: KANSAS CITY STATE: MO ZIP: 64111 BUSINESS PHONE: 8165315575 FORMER COMPANY: FORMER CONFORMED NAME: INVESTORS RESEARCH CORP DATE OF NAME CHANGE: 19920929 SC 13G 1 United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. _)* Name of Issuer - Swift Energy Co. Title or Class of Securities - Common Stock CUSIP Number - 870738101 Check the following box if a fee is being paid with this statement [ ]. Cusip No. 870738101 Page 2 of 6 Pages 1. Name of Reporting Person (S.S. or I.R.S. Identification No. of above person) American Century Investment Management, Inc. - 44-0640487 2. Check the appropriate box if a member of a group* - N/A 3. SEC Use Only 4. Citizenship or place of organization Delaware 5. Sole voting power 1,353,318 6. Shared voting power 0 7. Sole dispositive power 1,353,318 8. Shared dispositive power 0 9. Aggregate amount beneficially owned by each reporting person 1,353,318 10. Check box if the aggregate amount in Row (9) excludes certain shares N/A 11. Percent of class represented by amount in Row 9 8.2% 12. Type of reporting person* IA Cusip No. 870738101 Page 3 of 6 Pages 1. Name of Reporting Person (S.S. or I.R.S. Identification No. of above person) American Century Capital Portfolios, Inc. - 43-1646043 2. Check the appropriate box if a member of a group* - N/A 3. SEC Use Only 4. Citizenship or place of organization Maryland 5. Sole voting power 1,173,701 6. Shared voting power 0 7. Sole dispositive power 1,173,701 8. Shared dispositive power 0 9. Aggregate amount beneficially owned by each reporting person 1,173,701 10. Check box if the aggregate amount in Row (9) excludes certain shares N/A 11. Percent of class represented by amount in Row 9 7.1% 12. Type of reporting person* IV SCHEDULE 13G Item 1(a). NAME OF ISSUER Swift Energy Co. Item 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES 16825 Northchase Drive Suite 400 Houston, TX 77060 Item 2(a). NAME OF PERSONS FILING American Century Investment Management, Inc., on its behalf and on behalf of: American Century Capital Portfolios, Inc. Item 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE 4500 Main Street P.O. Box 418210 Kansas City, MO 64141-9210 Attn: David H. Reinmiller Item 2(c). CITIZENSHIP Delaware Item 2(d). TITLE OF CLASS OF SECURITIES Common Stock Item 2(e). CUSIP NO. 870738101 Item 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b) OR 13d-2(b), CHECK WHETHER THE PERSON FILING IS A (g) [ X ] Registered Investment Adviser, in accordance with Rule 13d-1(b)(ii)(E) (Note: See Item 7). Item 4. OWNERSHIP (a) Aggregate amount beneficially owned: 1,353,318 (b) Percent of class: 8.2% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 1,353,318 (ii) shared power to vote or to direct the vote: 0 (iii)sole power to dispose or to direct the disposition of: 1,353,318 (iv) shared power to dispose or to direct the disposition of: 0 Item 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ ]. Item 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON American Century Investment Management, Inc. ("ACIM"), a registered investment adviser, manages, pursuant to management agreements, the investments of thirteen registered investment companies, American Century Mutual Funds, Inc., American Century World Mutual Funds, Inc., American Century Capital Portfolios, Inc., American Century Variable Portfolios, Inc., American Century Premium Reserves, Inc., American Century Strategic Asset Allocations, Inc., American Century Municipal Trust, American Century Quantitative Equity Funds, Inc., American Century International Bond Funds, Inc., American Century Investment Trust, American Century Government Income Trust, American Century Target Maturities Trust, and American Century California Tax-Free and Municipal Funds, Inc., and manages, pursuant to sub-advisory agreements, the investments of two registered investment companies, American Skandia Trust and American Skandia Advisor Funds, Inc. ACIM also manages the assets of institutional investor accounts. The securities that are the subject of this report are owned by and held for such investment companies and separate institutional investor accounts. Any dividends received from such securities, or the proceeds of any sale of such securities, are for the benefit of, and are held for such investment companies and separate institutional investor accounts. American Century Capital Portfolios, Inc. owned more than 5% of the class of securities which are the subject of this report. Item 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY N/A Item 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP N/A Item 9. NOTICE OF DISSOLUTION OF GROUP N/A 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. February 10, 1999 AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. Date By: /s/David C. Tucker David C. Tucker Senior Vice President and General Counsel EXHIBIT A Rule 13d-1(f)(1)(iii) Agreement Each of the undersigned hereby agrees and consents to the execution and joint filing on its behalf by American Century Investment Management, Inc. of this Schedule 13G respecting the beneficial ownership of the securities which are the subject of this schedule at December 31, 1998. Dated this 10th day of February, 1999. American Century Investment Management, Inc. By: /s/David C. Tucker David C. Tucker Senior Vice President and General Counsel American Century Capital Portfolios, Inc. By: /s/David C. Tucker David C. Tucker Vice President -----END PRIVACY-ENHANCED MESSAGE-----