1 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 24, 1996 REGISTRATION NO. 333-2680 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 --------------------- POST-EFFECTIVE AMENDMENT NO. 2 TO FORMS S-4/S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 --------------------- DIAMOND OFFSHORE DRILLING, INC. (Exact Name of Registrant as Specified in Its Charter) DELAWARE 1381 76-0321760 (State or Other Jurisdiction (Primary Standard Industrial (I.R.S. Employer of Incorporation or Organization) Classification Code Number) Identification Number) DIAMOND OFFSHORE DRILLING, INC. RICHARD L. LIONBERGER, ESQ. 15415 KATY FREEWAY, SUITE 400 VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY HOUSTON, TEXAS 77094 15415 KATY FREEWAY, SUITE 400 (713) 492-5300 HOUSTON, TEXAS 77094 (Address, Including Zip Code, and Telephone (713) 492-5300 Number, (Name, Address, Including Zip Code and Including Area Code, of Registrant's Telephone Number, Including Area Principal Executive Offices) Code, of Agent For Service) Copies to: JAMES L. RICE III, ESQ. MORRIS J. KRAMER, ESQ. WEIL, GOTSHAL & MANGES LLP ROBERT M. CHILSTROM, ESQ. 700 LOUISIANA, SUITE 1600 SKADDEN, ARPS, SLATE, MEAGHER & FLOM HOUSTON, TEXAS 77002 919 THIRD AVENUE (713) 546-5000 NEW YORK, NEW YORK 10022 (212) 735-3000 --------------------- APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as practicable after this Registration Statement becomes effective and all other conditions to the amalgamation (the "Acquisition") of AO Acquisition Limited with Arethusa (Off-Shore) Limited pursuant to the Plan of Acquisition described in the enclosed Prospectus/Joint Proxy Statement have been satisfied or waived. If any of the securities being registered on these Forms are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. /X/ --------------------- THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A), MAY DETERMINE. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2 EXPLANATORY NOTE This Post-Effective Amendment No. 2 to Registration Statement No. 333-2680 is being filed for the sole purpose of adding the following exhibit to the Registration Statement: Term Drilling Contract dated March 29, 1996 between Diamond Offshore and Chevron U.S.A. Production Company with respect to the Ocean Quest. II-1 3 FORM S-4 ITEM 21/FORM S-1 ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES. (a) Exhibits EXHIBIT NO. DESCRIPTION ------- ----------- 1.1 Form of U.S. Purchase Agreement* 1.2 Form of International Purchase Agreement* 2.1 Plan of Acquisition* 2.2 Amendment No. 1 to Plan of Acquisition* 2.3 Amalgamation Agreement* 3.1 Restated Certificate of Incorporation of Diamond Offshore (incorporated by reference herein to Exhibit 3.1 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 3.2 Amended By-laws of Diamond Offshore* 3.2.1 Amendment of the Company's By-laws on November 8, 1995* 3.2.2 Amendment of the Company's By-laws on April 3, 1996* 5.1 Opinion of Weil, Gotshal & Manges LLP regarding validity of the securities being registered* 8.1 Opinion of Weil, Gotshal & Manges LLP regarding certain tax matters* 10.1 Fee Agreement* 10.2 Amendment No. 1 to Fee Agreement* 10.3 Loews Stockholder's Agreement* 10.4 Amendment No. 1 to Loews Stockholder's Agreement* 10.5 Shareholders Agreement* 10.6 Amendment No. 1 to Shareholders Agreement* 10.7 Termination and Settlement Agreement dated October 10, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.1 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.8 Registration Rights Agreement dated October 16, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.2 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.9 Services Agreement dated October 16, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.3 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.10 Agreement ("Rose Employment Agreement"), dated November 1, 1992, between Diamond Offshore and Robert E. Rose (incorporated by reference herein to Exhibit 10.7 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.11 Amendment, dated December 27, 1995, to the Rose Employment Agreement (incorporated by reference herein to Exhibit 10.5 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.12 Credit Agreement among Diamond Offshore, Diamond Offshore Limited, various lending institutions, Bankers Trust Company and Christiania Bank og Kreditkasse, New York Branch, as Co-Arrangers and Bankers Trust Company, as Administrative Agent dated as of February 8, 1996 and amended and restated as of March 27, 1996* II-2 4 EXHIBIT NO. DESCRIPTION ------- ----------- 10.13 Diamond Offshore Management Bonus Program (incorporated by reference herein to Exhibit 10.9 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.14 Form of Diamond Offshore Executive Deferred Compensation Plan (incorporated by reference herein to Exhibit 10.10 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.15 Term Drilling Contract dated March 29, 1996 between Diamond Offshore and Chevron U.S.A. Production Company with respect to the Ocean Quest 10.16 Letter of Intent entered into September 6, 1995 between Diamond Offshore and Texaco Exploration and Production Inc. with respect to the Ocean Star (formerly named Ocean Countess) (incorporated by reference herein to Exhibit 10.12 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.17 Diamond Offshore Drilling, Inc. Nonqualified Stock Option Plan for Certain Former Directors of Arethusa* 10.18 Diamond Offshore Drilling, Inc. Stock Option Plan for Certain Former Employees of Arethusa* 21.1 List of Subsidiaries of Diamond Offshore* 23.1 Consent of Deloitte & Touche LLP* 23.2 Consent of Arthur Andersen & Co.* 23.3 Consent of Klynveld Peat Marwick Goerdeler* 23.4 Consent of Weil, Gotshal & Manges LLP. Reference is made to Exhibit 5.1 23.5 Consent of Weil, Gotshal & Manges LLP. Reference is made to Exhibit 8.1 23.6 Consent of CS First Boston Corporation* 23.7 Consent of Merrill Lynch, Pierce, Fenner & Smith Incorporated* 24.1 Powers of Attorney* 99.1 Fairness Opinion of CS First Boston Corporation* 99.2 Fairness Opinion of Merrill Lynch, Pierce, Fenner & Smith Incorporated* 99.3 Excerpts from The Companies Act of 1981 of Bermuda, as amended* 99.4 Form of Diamond Offshore proxy card* 99.5 Form of Arethusa proxy card* - --------------- * Previously filed. (b) Financial Statement Schedules Not applicable. II-3 5 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant has duly caused this Post-Effective Amendment No. 2 to Registration Statement on Forms S-4/S-1 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Houston, State of Texas, on May 24th, 1996. DIAMOND OFFSHORE DRILLING, INC. By: /s/ RICHARD L. LIONBERGER -------------------------------- Name: Richard L. Lionberger Title: Vice President, General Counsel and Secretary Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 2 to Registration Statement has been signed by the following persons in the capacities and on the dates indicated. SIGNATURE TITLE DATE - --------------------------------------------- ---------------------------- ----------------- /s/ ROBERT E. ROSE* President, Chief Executive May 24, 1996 -------------------------------------- Officer and Director Robert E. Rose (principal executive officer) /s/ LAWRENCE R. DICKERSON* Senior Vice President and May 24, 1996 -------------------------------------- Chief Financial Officer Lawrence R. Dickerson (principal financial officer) /s/ GARY T. KRENEK* Controller (principal May 24, 1996 -------------------------------------- accounting officer) Gary T. Krenek /s/ JAMES S. TISCH* Chairman of the Board May 24, 1996 -------------------------------------- James S. Tisch /s/ HERBERT C. HOFMANN* Director May 24, 1996 -------------------------------------- Herbert C. Hofmann *By: /s/ RICHARD L. LIONBERGER -------------------------------------- Richard L. Lionberger Attorney-in-Fact II-4 6 INDEX TO EXHIBITS EXHIBIT NO. DESCRIPTION ------- ------------ 1.1 Form of U.S. Purchase Agreement* 1.2 Form of International Purchase Agreement* 2.1 Plan of Acquisition* 2.2 Amendment No. 1 to Plan of Acquisition* 2.3 Amalgamation Agreement* 3.1 Restated Certificate of Incorporation of Diamond Offshore (incorporated by reference herein to Exhibit 3.1 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 3.2 Amended By-laws of Diamond Offshore* 3.2.1 Amendment of the Company's By-laws on November 8, 1995* 3.2.2 Amendment of the Company's By-laws on April 3, 1996* 5.1 Opinion of Weil, Gotshal & Manges LLP regarding validity of the securities being registered* 8.1 Opinion of Weil, Gotshal & Manges LLP regarding certain tax matters* 10.1 Fee Agreement* 10.2 Amendment No. 1 to Fee Agreement* 10.3 Loews Stockholder's Agreement* 10.4 Amendment No. 1 to Loews Stockholder's Agreement* 10.5 Shareholders Agreement* 10.6 Amendment No. 1 to Shareholders Agreement* 10.7 Termination and Settlement Agreement dated October 10, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.1 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.8 Registration Rights Agreement dated October 16, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.2 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.9 Services Agreement dated October 16, 1995 between Loews and Diamond Offshore (incorporated by reference herein to Exhibit 10.3 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.10 Agreement ("Rose Employment Agreement"), dated November 1, 1992, between Diamond Offshore and Robert E. Rose (incorporated by reference herein to Exhibit 10.7 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.11 Amendment, dated December 27, 1995, to the Rose Employment Agreement (incorporated by reference herein to Exhibit 10.5 of Diamond Offshore's Annual Report on Form 10-K for the fiscal year ended December 31, 1995) 10.12 Credit Agreement among Diamond Offshore, Diamond Offshore Limited, various lending institutions, Bankers Trust Company and Christiania Bank og Kreditkasse, New York Branch, as Co-Arrangers and Bankers Trust Company, as Administrative Agent dated as of February 8, 1996 and amended and restated as of March 27, 1996* 7 EXHIBIT NO. DESCRIPTION ------- ----------- 10.13 Diamond Offshore Management Bonus Program (incorporated by reference herein to Exhibit 10.9 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.14 Form of Diamond Offshore Executive Deferred Compensation Plan (incorporated by reference herein to Exhibit 10.10 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.15 Term Drilling Contract dated March 29, 1996 between Diamond Offshore and Chevron U.S.A. Production Company with respect to the Ocean Quest 10.16 Letter of Intent entered into September 6, 1995 between Diamond Offshore and Texaco Exploration and Production Inc. with respect to the Ocean Star (formerly named Ocean Countess) (incorporated by reference herein to Exhibit 10.12 of Diamond Offshore's Registration Statement No. 33-95484 on Form S-1) 10.17 Diamond Offshore Drilling, Inc. Nonqualified Stock Option Plan for Certain Former Directors of Arethusa* 10.18 Diamond Offshore Drilling, Inc. Stock Option Plan for Certain Former Employees of Arethusa* 21.1 List of Subsidiaries of Diamond Offshore* 23.1 Consent of Deloitte & Touche LLP* 23.2 Consent of Arthur Andersen & Co.* 23.3 Consent of Klynveld Peat Marwick Goerdeler* 23.4 Consent of Weil, Gotshal & Manges LLP. Reference is made to Exhibit 5.1 23.5 Consent of Weil, Gotshal & Manges LLP. Reference is made to Exhibit 8.1 23.6 Consent of CS First Boston Corporation* 23.7 Consent of Merrill Lynch, Pierce, Fenner & Smith Incorporated* 24.1 Powers of Attorney* 99.1 Fairness Opinion of CS First Boston Corporation* 99.2 Fairness Opinion of Merrill Lynch, Pierce, Fenner & Smith Incorporated* 99.3 Excerpts from The Companies Act of 1981 of Bermuda, as amended* 99.4 Form of Diamond Offshore proxy card* 99.5 Form of Arethusa proxy card* - --------------- * Previously filed.