UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 1) Under the Securities Exchange Act of 1934 CAPSTONE TURBINE CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) US 14067D1028 (CUSIP Number) December 31, 2006 (Date of Event Which Requires Filing of this Statement) |_| Rule 13d-1(b) |X| Rule 13d-1(c) |_| Rule 13d-1(d) SCHEDULE 13G CUSIP No. US 14067D1028 Page 2 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Asset Managers International Ltd - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION British Virgin Islands - -------------------------------------------------------------------------------- NUMBER OF 5. SOLE VOTING POWER SHARES 0 ----------------------------------------------------------------- BENEFICIALLY 6. SHARED VOTING POWER OWNED BY 0 ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING 0 ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.00% - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* CO - -------------------------------------------------------------------------------- SCHEDULE 13G CUSIP No. US 14067D1028 Page 3 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Cape Investment Advisors, Ltd - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Bermuda - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 ----------------------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY 0 OWNED BY ----------------------------------------------------------------- EACH 7. SOLE DISPOSITIVE POWER REPORTING 0 ----------------------------------------------------------------- PERSON 8. SHARED DISPOSITIVE POWER WITH 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.00% - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* CO - -------------------------------------------------------------------------------- SCHEDULE 13G CUSIP No. US 14067D1028 Page 4 - -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Pentagon Capital Management Plc - -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION England and Wales - -------------------------------------------------------------------------------- 5. SOLE VOTING POWER NUMBER OF 0 ----------------------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY 0 OWNED BY ----------------------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON 0 ----------------------------------------------------------------- WITH 8. SHARED DISPOSITIVE POWER 0 - -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 - -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| - -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.00% - -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* IA - -------------------------------------------------------------------------------- SCHEDULE 13G CUSIP No. US 14067D1028 Page 5 This statement is hereby amended and restated in its entirety as follows: Item 1. Issuer. (a) The name of the issuer is Capstone Turbine Corporation (the "Issuer"). (b) The address of the Issuer's principal executive office is 21211 Nordhoff Street, Chatsworth, California 91311. Item 2. Reporting Person and Security. (a) Asset Managers International Ltd ("AMI") is an international business company incorporated under the laws of the British Virgin Islands. Pentagon Capital Management Plc ("PCM") is a company incorporated and registered in England and Wales with company number 03657659. Cape Investment Advisors, Ltd. ("Cape") is incorporated under the laws of Bermuda. AMI is wholly owned by several "feeder" funds and Cape owns the only voting stock in AMI. PCM is an investment adviser that controls the investments of AMI and the feeder funds. AMI, Cape and PCM are referred to herein as the "Reporting Persons." (b) The business address for each of the Reporting Persons is 1 Knightsbridge, London, SW1X 7LX. The registered office of AMI is at Craigmuir Chambers, P.O. Box 71, Road Town, Tortola, British Virgin Islands. The registered office for PCM is at 1 Knightsbridge, London, SW1X 7LX. The registered office for Cape is Bermudiana Arcade 3rd Floor, 27 Queen Street, Hamilton HM11 Bermuda. (c) AMI was incorporated under the laws of the British Virgin Islands. PCM was incorporated under the laws of England and Wales. Cape was incorporated under the laws of Bermuda. (d) The title of the class of securities to which this statement relates is the common stock of the Issuer, par value $0.001 per share (the "Common Stock"). (e) The CUSIP number is 14067D1028. Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b) or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) |_| Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o). (b) |_| Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c). SCHEDULE 13G CUSIP No. US 14067D1028 Page 6 (c) |_| Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c). (d) |_| Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) |_| An investment adviser in accordance with ss. 240.13d-1(b)(1)(ii) (E). (f) |_| An employee benefit plan or endowment fund in accordance with ss. 240.13d-1(b)(1)(ii)(F). (g) |_| A parent holding company or control person in accordance with ss. 240.13d-1(b)(1)(ii)(G). (h) |_| A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813). (i) |_| A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3). (j) |_| Group, in accordance with ss. 240.13d-1(b)(1)(ii)(J). Not Applicable. Item 4. Ownership. SCHEDULE 13G CUSIP No. US 14067D1028 Page 7 As of December 31, 2006, none of the Reporting Persons beneficially owned any shares of the Issuer. Assuming that the Issuer had 103,939,563 shares outstanding on December 31, 2006, which is the number reported by the Issuer as outstanding as of October 31, 2006 in its Quarterly Report on Form 10-Q filed on November 9, 2006, each of the individual Reporting Persons had, on December 31, 2006, beneficial ownership of 0 shares of Common Stock which represented 0.00% of the Common Stock outstanding. Item 5. Ownership of Five Percent or Less of a Class. If this Schedule 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 [x] Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not Applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person. Not Applicable. Item 8. Identification and Classification of Members of the Group. Not Applicable. Item 9. Notice of Dissolution of Group. Not Applicable. Item 10. Certifications. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SCHEDULE 13G CUSIP No. US 14067D1028 Page 8 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: February 7, 2007 ASSET MANAGERS INTERNATIONAL LTD By: /s/ William F. Maycock ------------------------------ William F. Maycock Its: Director Dated: February 7, 2007 CAPE INVESTMENT ADVISORS, LTD. By: /s/ David Smith ------------------------------ David Smith Its: Director Dated: February 7, 2007 PENTAGON CAPITAL MANAGEMENT PLC By: /s/ Lewis Chester ------------------------------ Lewis Chester Its: Authorized Signatory SCHEDULE 13G CUSIP No. US 14067D1028 Page 9 EXHIBIT INDEX Exhibit A Agreement of Joint Filing SCHEDULE 13G CUSIP No. US 14067D1028 Page 10 EXHIBIT A AGREEMENT OF JOINT FILING The undersigned hereby agree that they are filing jointly pursuant to Rule 13d-1 of the Securities Exchange Act of 1934 a report on Schedule 13G, containing the information required by Schedule 13G, for shares of the common stock of Capstone Turbine Corporation beneficially owned by Asset Managers International Ltd, Cape Investment Advisors, Ltd. and Pentagon Capital Management Plc and such other holdings as may be reported therein. Dated: February 7, 2007 ASSET MANAGERS INTERNATIONAL LTD By: /s/ William F. Maycock ------------------------------ William F. Maycock Its: Director Dated: February 7, 2007 CAPE INVESTMENT ADVISORS, LTD. By: /s/ David Smith ------------------------------ David Smith Its: Director Dated: February 7, 2007 PENTAGON CAPITAL MANAGEMENT PLC By: /s/ Lewis Chester ------------------------------ Lewis Chester Its: Authorized Signatory