EXHIBIT 4.1 ================================================================================ CANARGO ENERGY CORPORATION US $25,000,000.00 Senior Secured Notes due July 25, 2009 ---------- NOTE PURCHASE AGREEMENT ---------- DATED JULY 25, 2005 TABLE OF CONTENTS (Not a part of the Agreement) <Table> <Caption> SECTION HEADING PAGE SECTION 1. AUTHORIZATION OF NOTES.................................................................1 SECTION 2. SALE AND PURCHASE OF NOTES.............................................................1 SECTION 3. SECURITY...............................................................................1 Section 3.1. Grant of Security Interests............................................................1 SECTION 4. CLOSING................................................................................2 SECTION 5. CONDITIONS TO CLOSING..................................................................3 Section 5.1 Conditions to Purchaser's Obligation to Purchase Notes.................................3 Section 5.1.1. Representations and Warranties.........................................................3 Section 5.1.2. Performance; No Default................................................................3 Section 5.1.3. Compliance Certificates................................................................3 Section 5.1.4. Opinions of Counsel....................................................................4 Section 5.1.5. Purchase Permitted by Applicable Law, etc..............................................4 Section 5.1.6. Loan Documents.........................................................................4 Section 5.1.7. Proceedings and Documents..............................................................4 Section 5.1.8. Subsidiary Guaranties..................................................................4 Section 5.1.9. Due Diligence..........................................................................4 Section 5.2 Conditions to Obligations of the Company...............................................4 Section 5.2.1 Representations and Warranties.........................................................4 Section 5.2.2. Performance............................................................................5 Section 5.2.3. Proceedings and Litigation.............................................................5 Section 5.2.4. Proceedings and Documents..............................................................5 SECTION 6. REPRESENTATIONS AND WARRANTIES OF THE COMPANY..........................................5 Section 6.1. Organization; Power and Authority......................................................5 Section 6.2. Authorization, etc.....................................................................5 Section 6.3. Disclosure.............................................................................6 Section 6.4. Organization and Ownership of Shares of Subsidiaries; Affiliates.......................6 Section 6.5. Financial Statements...................................................................6 Section 6.6. Compliance with Laws, Other Instruments, etc...........................................7 Section 6.7. Governmental Authorizations, etc.......................................................7 Section 6.8. Litigation; Observance of Agreements, Statutes and Orders..............................7 Section 6.9. Taxes..................................................................................7 Section 6.10. Title to Collateral; Assets of the Company.............................................8 Section 6.11. Licenses, Permits, etc.................................................................8 </Table> <Table> Section 6.12. Benefit Plan Compliance................................................................8 Section 6.13. Private Offering by the Company........................................................9 Section 6.14. Use of Proceeds; Margin Regulations....................................................9 Section 6.15. Existing Indebtedness; Future Liens....................................................9 Section 6.16. Foreign Assets Control Regulations, etc...............................................10 Section 6.17. Status under Certain Statutes.........................................................10 Section 6.18. Environmental Matters.................................................................10 Section 6.19. Basic Documents.......................................................................11 Section 6.20. Solvency..............................................................................11 SECTION 7. REPRESENTATIONS OF THE PURCHASER......................................................12 Section 7.1 Due Authorization; Absence of Conflicts; Enforceability; Purchase for Investment, etc.......................................................................12 Section 7.2 Access to Information.................................................................13 Section 7.3. Source of Funds.......................................................................13 SECTION 8. INFORMATION AS TO COMPANY.............................................................14 Section 8.1. Financial and Business Information....................................................14 Section 8.2. Officer's Certificate.................................................................17 Section 8.3. Inspection............................................................................18 SECTION 9. PREPAYMENT OF THE NOTES; CHANGE IN CONTROL............................................18 Section 9.1. Optional Prepayments..................................................................18 Section 9.2. Allocation of Partial Prepayments.....................................................18 Section 9.3. Maturity; Surrender, etc..............................................................19 Section 9.4. Purchase of Notes.....................................................................19 Section 9.5. Redemption Price......................................................................19 Section 9.6. Change in Control.....................................................................19 SECTION 10. AFFIRMATIVE COVENANTS.................................................................21 Section 10.1. Compliance with Law...................................................................21 Section 10.2. Insurance.............................................................................21 Section 10.3. Maintenance of Properties.............................................................22 Section 10.4. Payment of Taxes and Claims...........................................................22 Section 10.5. Corporate Existence, etc..............................................................22 Section 10.6. Additional Subsidiaries...............................................................22 Section 10.7. Conversion of Note....................................................................23 Section 10.8. Additional Security...................................................................24 Section 10.9. Payment of Special Counsel and Other Fees.............................................24 Section 10.10. Payment of Placement Fee..............................................................24 Section 10.11 Termination of Cornell Facilities.....................................................24 SECTION 11. NEGATIVE COVENANTS....................................................................25 Section 11.1. Transactions with Affiliates..........................................................25 Section 11.2. Merger, Consolidation, etc............................................................25 </Table> <Table> Section 11.3. Liens.................................................................................25 Section 11.4. Priority..............................................................................27 Section 11.5. Line of Business......................................................................27 Section 11.6. Restricted Payments...................................................................28 Section 11.7. Sale-and-Leasebacks...................................................................28 Section 11.8. Sale of Assets, etc...................................................................28 Section 11.9. Future Indebtedness...................................................................29 Section 11.10. Basic Documents.......................................................................29 Section 11.11. Anti-takeover Defense.................................................................30 SECTION 12. EVENTS OF DEFAULT.....................................................................31 SECTION 13. REMEDIES ON DEFAULT, ETC..............................................................33 Section 13.1. Acceleration..........................................................................33 Section 13.2. Other Remedies........................................................................34 Section 13.3. Collateral............................................................................34 Section 13.4. Costs and Expenses....................................................................34 Section 13.5. Rescission............................................................................34 Section 13.6. No Waivers or Election of Remedies, Expenses, etc.....................................35 SECTION 14. REGISTRATION; EXCHANGE; SUBSTITUTION OF NOTES.........................................35 Section 14.1. Registration of Notes.................................................................35 Section 14.2. Transfer and Exchange of Notes........................................................35 Section 14.3. Replacement of Notes..................................................................36 SECTION 15. PAYMENTS ON NOTES.....................................................................36 Section 15.1. Place of Payment......................................................................36 Section 15.2. Home Office Payment...................................................................36 SECTION 16. EXPENSES, ETC.........................................................................37 Section 16.1. Transaction Expenses..................................................................37 Section 16.2. Survival..............................................................................37 SECTION 17. SURVIVAL OF REPRESENTATIONS AND WARRANTIES; ENTIRE AGREEMENT..........................38 SECTION 18. AMENDMENT AND WAIVER..................................................................38 Section 18.1. Requirements..........................................................................38 Section 18.2. Solicitation of Holders of Notes......................................................38 Section 18.3. Binding Effect, etc...................................................................39 Section 18.4. Notes Held by Company, etc............................................................39 </Table> <Table> SECTION 19. NOTICES...............................................................................39 SECTION 20. REPRODUCTION OF DOCUMENTS.............................................................40 SECTION 21. CONFIDENTIAL INFORMATION..............................................................40 SECTION 22. SUBSTITUTION OF PURCHASER.............................................................41 SECTION 23. MISCELLANEOUS.........................................................................42 Section 23.1. Successors and Assigns................................................................42 Section 23.2. Payments Due on Non-Business Days.....................................................42 Section 23.3. Severability..........................................................................42 Section 23.4. Construction and Interpretation.......................................................42 Section 23.5. Counterparts..........................................................................43 Section 23.6. Governing Law.........................................................................43 Section 23.7. Submission to Jurisdiction............................................................43 Section 23.8 Appointment of Agent for Service of Process...........................................43 Section 23.9. Company Indemnification...............................................................44 Signatures........................................................................................................1 </Table> SCHEDULE A -- Information Relating To Purchasers SCHEDULE B -- Defined Terms SCHEDULE 5.11 -- Subsidiary Guarantors SCHEDULE 6.3 -- Disclosure Materials SCHEDULE 6.4 -- Subsidiaries of CanArgo SCHEDULE 6.5 -- Financial Statements SCHEDULE 6.8 -- Certain Litigation SCHEDULE 6.11 -- Licenses, Permits, etc. SCHEDULE 6.14 -- Use of Proceeds SCHEDULE 6.15 -- Existing Indebtedness SCHEDULE 6.18 -- Environmental Matters SCHEDULE 6.19 -- Basic Agreements SCHEDULE 11.1 -- Transactions with Affiliates SCHEDULE 11.8 -- Permitted Farmout Counterparties