SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ---------------------------------------------------- AMENDMENT NO. 3 ON FORM 10-K/A (mark one) [ X ] Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended October 3, 1998 [ ] Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission file number 1-10573 THERMO POWER CORPORATION (Exact name of Registrant as specified in its charter) Massachusetts 04-2891371 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 81 Wyman Street, P.O. Box 9046 Waltham, Massachusetts 02454-9046 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (781) 622-1000 Securities registered pursuant to Section 12(b) of theAct: Title of each class Name of exchange on which registered Common Stock, $.10 par value American Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to the filing requirements for at least the past 90 days. Yes [ X ] No [ ] Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrant's knowledge, in definitive proxy or information statements incorporated by reference into Part III of this Form 10-K or any amendment to this Form 10-K. [ ] The aggregate market value of the voting stock held by nonaffiliates of the Registrant as of October 30, 1998, was approximately $18,451,000. As of October 30, 1998, the Registrant had 11,830,163 shares of Common Stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant's Annual Report to Shareholders for the fiscal year ended October 3, 1998, are incorporated by reference into Parts I and II. FORM 10-K/A THERMO POWER CORPORATION Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K (a, d) Financial Statements and Schedules Financial Statement Schedules filed herewith: Schedule II: Valuation and Qualifying Accounts. See attached. (c) Exhibits 13 Annual Report to Shareholders for the Fiscal Year Ended October 3, 1998 (only these portions incorporated herein by reference). 23 Consent of Arthur Andersen LLP. Attached is Exhibit 13 and Schedule II of the Registrant's Form 10-K for the year ended October 3, 1998. The Registrant's financial statements have been amended principally to modify disclosures concerning certain restructuring actions and other subsequent events. This amended information replaces the corresponding information filed originally in the Form 10-K. 2 FORM 10-K/A SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed by the undersigned, thereunto duly authorized. Date: September 22, 1999 THERMO POWER CORPORATION By: /s/ J. Timothy Corcoran J. Timothy Corcoran President and Chief Executive Officer 3 Report of Independent Public Accountants To the Shareholders and Board of Directors of Thermo Power Corporation: We have audited, in accordance with generally accepted auditing standards, the consolidated financial statements included in Thermo Power Corporation's Annual Report to Shareholders incorporated by reference in this Amendment No. 3 on Form 10-K/A, and have issued our report thereon dated November 9, 1998 (except with respect to certain matters discussed in Notes 4 and 15, as to which the date is July 3, 1999). Our audits were made for the purpose of forming an opinion on those statements taken as a whole. The schedule listed in Item 14 on page 2 is the responsibility of the Company's management and is presented for purposes of complying with the Securities and Exchange Commission's rules and is not part of the basic consolidated financial statements. This schedule has been subjected to the auditing procedures applied in the audits of the basic consolidated financial statements and, in our opinion, fairly states in all material respects the consolidated financial data required to be set forth therein in relation to the basic consolidated financial statements taken as a whole. Arthur Andersen LLP Boston, Massachusetts November 9, 1998 4 SCHEDULE II FORM 10-K/A THERMO POWER CORPORATION Valuation and Qualifying Accounts (In thousands) Balance at Provision Beginning Charged Accounts Balance of to Accounts Written at End Description Year Expense Recovered Off Other (a) of Year - ----------------------------------- ---------- ------------- ----------- ---------- ----------- ----------- Allowance for Doubtful Accounts Year Ended October 3, 1998 $ 757 $ 200 $ 208 $ (491) $ 9,625 $10,299 Year Ended September 27, 1997 $ 589 $ 252 $ 3 $ (87) $ - $ 757 Year Ended September 28, 1996 $ 530 $ 191 $ 26 $ (158) $ - $ 589 Description Balance at Established Activity Balance Beginning as Cost of Charged at End of Year Acquisitions to Reserve Other (c) of Year - ----------------------------------- ---------- ------------- ----------- ---------- ----------- Accrued Acquisition Expenses (b) Year Ended October 3, 1998 $ 33 $ 7,364 $ (5,311) $ - $ 2,086 Year Ended September 27, 1997 $ 519 $ - $ (7) $ (479) $ 33 Year Ended September 28, 1996 $ 680 $ - $ (109) $ (52) $ 519 Description Balance at Provision Activity Balance Beginning Charged to Charged to at End of Year Expense Reserve Other of Year - ----------------------------------- ---------- ------------- ----------- ---------- ----------- Reserve for Discontinued Operations (d) Year Ended October 3, 1998 $ - $ 993 $ - $ - $ 993 (a) Includes allowances of businesses acquired and discontinued during the year as described in Notes 3 and 4, respectively, to Consolidated Financial Statements in the Registrant's Fiscal 1998 Annual Report to Shareholders and the effect of foreign currency translation. (b) The nature of activity in this account is described in Note 3 to Consolidated Financial Statements in the Registrant's Fiscal 1998 Annual Report to Shareholders. (c) Represents reductions of cost in excess of net assets of acquired companies for accrued acquisition expenses no longer considered necessary. (d) The nature of activity in this account is described in Note 4 to Consolidated Financial Statements in the Registrant's Fiscal 1998 Annual Report to Shareholders.