-------------------------- -------------------------- 71649P102 Page 1 of 7 -------------------------- -------------------------- ================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________ SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* _______________________ PETROKAZAKHSTAN INC. (Name of Issuer) CLASS A COMMON STOCK, NO PAR VALUE (Title of Class of Securities) 71649P102 (CUSIP Number) BERNARD F. ISAUTIER CHAIRMAN OF THE BOARD, PRESIDENT AND CHIEF EXECUTIVE OFFICER C/O PETROKAZAKHSTAN INC. HOGART HOUSE, 29-31 SHEET STREET WINDSOR, BERKSHIRE, SL4 1BY UNITED KINGDOM TEL. NO.: 44 (1753) 410 020 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) MARCH 31, 2005 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 1(f) or 1(g), check the following box [ ]. Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-1(a) for other parties to whom copies are to be sent. *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 disclosures provided in a prior cover page. The information required on 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). ================================================================================ -------------------------- -------------------------- 71649P102 Page 2 of 7 -------------------------- -------------------------- -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Bernard F. Isautier -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [_] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS PF -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [_] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Canadian -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 2,431,073 ------------------------------------------------ NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY OWNED 0 BY EACH REPORTING ------------------------------------------------ PERSON 9 SOLE DISPOSITIVE POWER WITH 2,431,073 ------------------------------------------------ 10 SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,431,073 -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.20% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON IN -------------------------------------------------------------------------------- -------------------------- -------------------------- 71649P102 Page 3 of 7 -------------------------- -------------------------- AMENDMENT NO. 4 TO SCHEDULE 13D This Amendment No. 4 amends and restates the Schedule 13D filed by Mr. Bernard F. Isautier with respect to the Class A Common Stock, no par value per share (the "Common Stock"), of PetroKazakhstan Inc. (the "Company"), which was originally filed on March 6, 2002, and amended by Amendment No. 1, which was filed on May 21, 2004, Amendment No. 2, which was filed on September 7, 2004, and Amendment No. 3, which was filed on September 30, 2004. ITEM 1. SECURITY AND ISSUER. The title of the class of equity securities of the Company to which this statement relates is the Company's Class A Common Stock, no par value. The address of the principal executive office of the Company is 140 - 4th Avenue S.W., #1460, Calgary, Alberta, Canada T2P 3N3. ITEM 2. IDENTITY AND BACKGROUND. (a) - (c) The person filing this statement is Bernard F. Isautier ("Mr. Isautier" or "Reporting Person"). The business address of Mr. Isautier is c/o PetroKazakhstan Inc., Hogart House, 29-31 Sheet Street, Windsor, Berkshire, SL4 1BY, United Kingdom. Mr. Isautier's principal occupation or employment is Chairman of the Board, President and Chief Executive Officer of the Company. (d) and (e) Mr. Isautier has not, during the last five years, been (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction or subject to any judgment, decree or final order finding any -------------------------- -------------------------- 71649P102 Page 4 of 7 -------------------------- -------------------------- violation of federal or state securities laws or enjoining future violations of, or prohibiting or mandating activities subject to, such laws. (f) Mr. Isautier is a citizen of Canada. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. On March 31, 2005, Mr. Isautier sold a total of 1,075,000 shares of Common Stock in open market transactions for an aggregate amount of Cdn$ 51,737,500 triggering the filing of this Amendment No. 4 to Schedule 13D. ITEM 4. PURPOSE OF TRANSACTION. The Reporting Person disposed of beneficial ownership of the shares of Common Stock described in this Amendment No. 4 to Schedule 13D for investment purposes. From time to time the Reporting Person may acquire additional shares of Common Stock and dispose of some or all of the shares of Common Stock owned by him. The Reporting Person has no other plans which relate to or would result in any of the items listed in paragraphs (a) through (j) of Item 4. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. (a) As of the date hereof, the Reporting Person may be deemed to beneficially own 2,431,073 shares of Common Stock (including 2,297,740 shares of Common Stock and options to purchase a further 133,333 shares of Common Stock), which based on calculations made in accordance with Rule 13d-3(d) of the Securities Exchange Act of 1934, as amended, and there being 76,002,037 shares of Common Stock outstanding (as represented by the Company to the Reporting Person), represent approximately 3.20% of the outstanding shares of Common Stock. -------------------------- -------------------------- 71649P102 Page 5 of 7 -------------------------- -------------------------- (b) The Reporting Person has the sole power to direct the vote and the sole power to direct the disposition of the 2,431,073 shares of Common Stock that may be deemed to be owned beneficially by him. (c) The shares of Common Stock sold by Mr. Isautier since September 30, 2004, the date on which Amendment No. 3 to Schedule 13D was filed, are as follows: DATE NUMBER OF SHARES PURCHASE PRICE PER SHARE ---- ---------------- ------------------------ March 9, 2005 100,000 US$44.00 March 10, 2005 1,000 Cdn$50.10 March 10, 2005 300 Cdn$50.04 March 10, 2005 398,700 Cdn$50.00 March 17, 2005 1,900 Cdn$50.24 March 17, 2005 300 Cdn$50.20 March 17, 2005 197,800 Cdn$50.00 March 31, 2005 275,000 Cdn$48.50 March 31, 2005 500,000 Cdn$48.00 March 31, 2005 300,000 Cdn$48.00 --------------- TOTAL 1,775,000 The shares were sold in open market transactions. (d) No person other than the Reporting Person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock owned by the Reporting Person. (e) Not Applicable. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIP WITH RESPECT TO THE ISSUER. There are no contracts, arrangements, understandings or relationships (legal or otherwise) between the person named in Item 2 and any person with respect to any security of the Company. -------------------------- -------------------------- 71649P102 Page 6 of 7 -------------------------- -------------------------- ITEM 7. MATERIALS TO BE FILED AS EXHIBITS. Not applicable. -------------------------- -------------------------- 71649P102 Page 7 of 7 -------------------------- -------------------------- SIGNATURES 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: April 1, 2005 /s/ Bernard F. Isautier --------------------------- Bernard F. Isautier