As filed with the Securities and Exchange Commission on September 19, 2002 Registration No. 333-67814 ================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- POST-EFFECTIVE AMENDMENT NO. 4 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 --------------- CANARGO ENERGY CORPORATION (Exact name of registrant as specified in its charter) DELAWARE 1311 91-0881481 (State or other jurisdiction of (Primary Standard Industrial (I.R.S. Employer Identification organization) Classification Code Number) incorporation or organization) C/O CANARGO SERVICES (UK) LIMITED 150 BUCKINGHAM PALACE ROAD, LONDON, ENGLAND SWIW 9TR (44) 207 808-4700 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) --------------- JEFFREY WILKINS CANARGO SERVICES (UK) LIMITED 150 BUCKINGHAM PALACE ROAD, LONDON, ENGLAND SWIW 9TR (44) 207 808-4700 (Name, address, including zip code, and telephone number, including area code of agent for service) --------------- Please forward a copy of all correspondence to: PETER A. BASILEVSKY SATTERLEE STEPHENS BURKE & BURKE LLP 230 PARK AVENUE, 11TH FLOOR NEW YORK, NY 10169 PHONE: (212) 818-9200 Approximate date of commencement of proposed sale to the public: FROM TIME TO TIME AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE. If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. [ ] If any of the securities being registered on this form 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. [ ] If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ] If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [ ] If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [ ] ================================================================================ DEREGISTRATION OF SECURITIES This Post-Effective Amendment No. 4 to the Registration Statement on Form S-1 (Reg. No. 333-67814) filed with the Securities and Exchange Commission (the "SEC") on August 17, 2001 (the "Original Form S-1") by CanArgo Energy Corporation, a Delaware corporation (the "Company"), is being filed to amend Post-Effective Amendment No. 3 to the Original Form S-1 filed with the SEC on September 17, 2002 to deregister all remaining unsold securities previously registered by the Company under the Securities Act of 1933, as amended, on the Original Form S-1, as amended. SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in London, England on September 19, 2002. CANARGO ENERGY CORPORATION By: /s/ David Robson ------------------------------- David Robson Chief Executive Officer Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/Vincent McDonnell -------------------------------------------------- Vincent McDonnell, Chief Financial Officer Principal Financial and Accounting Officer Date: September 19, 2002 By: /s/Roger Brittain* Date: September 19, 2002 -------------------------------------------------- Chairman of the Board By: /s/David Robson Date: September 19, 2002 -------------------------------------------------- David Robson, Chief Executive Officer and Director Principal Executive Officer By: /s/Russell Hammond* Date: September 19, 2002 -------------------------------------------------- Russell Hammond, Director By: /s/Nils N. Trulsvik* Date: September 19, 2002 -------------------------------------------------- Nils N. Trulsvik, Director *By: /s/David Robson Date: September 19, 2002 -------------------------------------------------- David Robson, Attorney-in-Fact EXHIBIT INDEX FILED HEREWITH EXHIBIT -------- ------- X 25(1) Power of attorney of certain signatories (contained on signature page included in Part II of the Registration Statement on Form S-1 filed with the SEC on August 17, 2001 (File No. 333-67814))