As filed with the Securities and Exchange Commission on July 31, 2000 Registration Statement No. 333- ================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ___________________ FORM S-3 ___________________ REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ___________________ AMERICAN SUPERCONDUCTOR CORPORATION (Exact name of registrant as specified in its charter) ___________________ DELAWARE 04-2959321 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) TWO TECHNOLOGY DRIVE WESTBOROUGH, MASSACHUSETTS 01581 (508) 836-4200 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) ___________________ Gregory J. Yurek Chairman, President and Chief Executive Officer American Superconductor Corporation Two Technology Drive Westborough, MA 01581 (508) 836-4200 ___________________ Copies to: Patrick J. Rondeau, Esq. Hale and Dorr LLP 60 State Street Boston, Massachusetts 02109 Tel: (617) 526-6000 Fax: (617) 526-5000 ___________________ Approximate date of commencement of proposed sale to public: As soon as practicable 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. [x] 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. [_] 333-_______. 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. [_] 333-__________. If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [_] ___________________ CALCULATION OF REGISTRATION FEE - ---------------------------------------------------------------------------------------------------------------------------------- Proposed Proposed Amount Maximum Maximum to be Offering Price Aggregate Amount of Title of Shares to be Registered Registered Per Share(1) Offering Price(1) Registration Fee - ---------------------------------------------------------------------------------------------------------------------------------- Common Stock, $.01 par value per share................... 37,500 shares $36.75 $1,378,125 $364.00 - --------------------------------------------------------------------------------------------------------------------------------- (1) Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) under the Securities Act and based upon the average of the high and low prices on the Nasdaq National Market on July 28, 2000. ___________________ The Company hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Company 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), shall determine. ================================================================================

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and we are not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to completion, dated July 31, 2000 PROSPECTUS AMERICAN SUPERCONDUCTOR CORPORATION 37,500 SHARES OF COMMON STOCK ___________________ This prospectus relates to resales of shares of common stock previously issued by American Superconductor Corporation to Integrated Electronics, LLC in connection with our acquisition of substantially all of the assets of Integrated Electronics, and which Integrated Electronics subsequently distributed to its members. We will not receive any proceeds from the sale of the shares. The selling stockholders identified in this prospectus, or their pledgees, donees, transferees or other successors-in-interest, may offer the shares from time to time through public or private transactions at prevailing market prices, at prices related to prevailing market prices or at privately negotiated prices. Our common stock is traded on the Nasdaq National Market under the symbol "AMSC." ___________________ Investing in our common stock involves a high degree of risk. See "Risk Factors" beginning on page 5. ___________________ The Securities and Exchange Commission and state securities regulators have not approved or disapproved these securities, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense. ___________________ The date of this prospectus is _____________ __, 2000.

TABLE OF CONTENTS Page ---- PROSPECTUS SUMMARY.......................................................... 3 THE OFFERING................................................................ 4 RISK FACTORS................................................................ 5 SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION.......................... 8 USE OF PROCEEDS............................................................. 9 SELLING STOCKHOLDERS........................................................ 9 PLAN OF DISTRIBUTION........................................................ 10 LEGAL MATTERS............................................................... 11 EXPERTS..................................................................... 11 WHERE YOU CAN FIND MORE INFORMATION......................................... 11 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE............................. 12 American Superconductor Corporation's executive offices are located at Two Technology Drive, Westborough, Massachusetts, 01581, our telephone number is (508) 836-4200 and our Internet address is www.amsuper.com The information on our Internet website is not incorporated by reference in this prospectus. Unless the context otherwise requires, references in this prospectus to "American Superconductor," "we," "us," and "our" refer to American Superconductor Corporation and its subsidiaries. The American Superconductor name and logo and the names of our products are trademarks or registered trademarks of American Superconductor Corporation. This prospectus also includes trademarks of other companies. We have not authorized anyone to provide you with information different from that contained or incorporated by reference in this prospectus. The selling stockholders are offering to sell, and seeking offers to buy, shares of our common stock only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of common stock.

PROSPECTUS SUMMARY This summary highlights important features of this offering and the information included or incorporated by reference in this prospectus. This summary does not contain all of the information that you should consider before investing in our common stock. You should read the entire prospectus carefully, especially the risks of investing in our common stock discussed under "Risk Factors." AMERICAN SUPERCONDUCTOR We are a world leader in developing and manufacturing products using superconducting materials and power electronic devices for electric power applications. Superconducting materials are perfect conductors of electricity when they are cooled below a critical temperature. We sell our products to electrical equipment manufacturers, industrial power users and businesses that produce and deliver power. Our products, and products sold by electrical equipment manufacturers that incorporate our products, can: . dramatically increase the capacity and reliability of power delivery networks; . significantly reduce the manufacturing costs of electrical equipment such as motors and generators; . improve the quality of electric power delivered to industrial sites; . lower electrical operating costs and increase productivity for industrial power users; and . conserve resources such as oil, gas and coal, which are used to produce electricity, by conducting electricity more efficiently. We believe there will be significant market demand for our products because of the following factors: . there is an increasing demand for power by businesses and consumers; . the current power delivery infrastructure is constrained; and . the reliability and quality of the power being delivered is becoming increasingly important. Our core product is high temperature superconducting wire, or HTS wire, which, when cooled to very low temperatures, carries more than 100 times the electrical current carried by copper wire of the same dimensions. We believe that an important application for our HTS wire will be high-capacity power cables, which are the backbone of the power delivery infrastructure. We also develop and manufacture products that incorporate HTS wire, such as HTS coils for use in motors and generators. The performance levels and mechanical properties of our HTS wire are sufficient today to meet the technical needs for applications such as cables for urban power delivery systems and very high horsepower motors (over 5,000 horsepower). We expect the first use of our HTS wire in power cables for a utility network will occur in early calendar year 2001, when Pirelli plans to install three 400-foot HTS power cables in a Detroit substation in replacement of nine copper-wire cables. We believe this project will be an important demonstration of the commercial viability of HTS power cables. Rockwell Automation Power Systems is testing a prototype 1,000 horsepower HTS motor using our wire in their facility. We expect this motor will be used later in an industrial site, and we believe this will provide a significant demonstration of the commercial viability of HTS motors. We also manufacture and sell commercial superconducting magnetic energy storage, or SMES, systems for the power quality and reliability markets. Our power quality SMES, or PQ-SMES, products, which incorporate low temperature superconductor (LTS) electromagnets and HTS wire, protect industrial power users from the adverse effects of momentary drops in voltage in power networks by quickly releasing large quantities of power from a storage coil to restore the voltage to its normal level. We sold our first commercial PQ-SMES unit in June 1997, and as of March 31, 2000 we had 10 PQ-SMES units in use by customers requiring high-quality power to -3-

maintain sensitive industrial processes in industries including paper, plastics and automotive parts manufacturing, and to maintain critical information processing, military and research applications. We also have received orders for four additional PQ- SMES units, three of these from two semiconductor customers seeking to protect their facilities from being shut down due to momentary sags in voltage, and one from a utility that will use the unit initially in a demonstration site. In February 1999, we launched a new product that we call distributed SMES, or D-SMES, which uses the same basic components as PQ-SMES but which is used at substations within large-scale transmission networks to protect them against power reliability problems such as voltage instability and low voltage problems. As of March 31, 2000, we had received orders for eight D-SMES units. On June 1, 2000, we acquired the assets of Integrated Electronics, LLC of Milwaukee, Wisconsin, a manufacturer of power electronic converters that utilize state-of-the-art power semiconductors. Integrated Electronics has been one of our co-developers and suppliers of advanced power electronic converter modules for use in our SMES product line, which is manufactured in Madison, Wisconsin. Power electronic converters are key components in SMES systems. We believe that this acquisition strengthens our internal power electronics technology base. We plan to expand our power electronics technology base and develop new products for other market segments where power technologies are important. The focus will remain on high-end applications, primarily at power levels greater than 100 kilowatts. Future applications of our power electronic products may include electric motor drives; transportation systems such as locomotives, ships, electric or hybrid electric vehicles; distributed generating equipment, including fuel cells and micro-turbines; and energy storage applications such as flywheels and batteries. We plan to use a portion of the $205.6 million in net proceeds from our March 2000 stock offering to increase our manufacturing capacity for HTS wire, to provide wire for demonstrations of applications such as cables and motors in the near term, to achieve reduced manufacturing costs associated with higher volume production, and to have the wire production capacity in place as the commercial viability of various applications is demonstrated. We also plan to use a portion of the net proceeds to increase our manufacturing capacity for our SMES products. We will not receive any proceeds from the sale of the shares by the selling stockholders in this offering. THE OFFERING Common Stock offered by the selling stockholders.............................. 37,500 shares Use of proceeds........................... American Superconductor will not receive any proceeds from the sale of shares in this offering Nasdaq National Market symbol............. AMSC -4-

RISK FACTORS Investing in our common stock involves a high degree of risk. You should carefully consider the risks and uncertainties described below before purchasing our common stock. The risks and uncertainties described below are not the only ones facing our company. Additional risks and uncertainties may also impair our business operations. If any of the following risks actually occur, our business, financial condition or results of operations would likely suffer. In that case, the trading price of our common stock could fall, and you may lose all or part of the money you paid to buy our common stock. We have a history of operating losses and we expect to continue to incur losses in the future. We have been principally engaged in research and development activities. We have incurred net losses in each year since our inception. Our net loss for fiscal 1998, fiscal 1999 and fiscal 2000 was $12,378,000, $15,326,000 and $17,598,000, respectively. Our accumulated deficit as of March 31, 2000 was $106,816,000. We expect to continue to incur operating losses in the next year and we may never become profitable. There are a number of technological challenges that must be successfully addressed before our superconducting products can gain widespread commercial acceptance. Many of our products are in the early stages of commercialization and testing, while others are still under development. We do not believe any company has yet successfully developed and commercialized significant quantities of HTS wire or wire products. There are a number of technological challenges that we must successfully address to complete our development and commercialization efforts. For example, we face engineering challenges in producing HTS wire in longer lengths and commercial quantities. We also believe that several years of further development in the cable and motor industries will be necessary before a substantial number of additional commercial applications for our HTS wire in these industries can be developed and proven. We may also need to improve the quality of our HTS wire to expand the number of commercial applications for it. We may be unable to meet such technological challenges. Delays in development, as a result of technological challenges or other factors, may result in the introduction of our products later than anticipated. The commercial uses of superconducting products are very limited today, and a widespread commercial market for our products may not develop. To date, there has been no widespread commercial use of HTS products. Although LTS products are currently used in several commercial applications, commercial acceptance of LTS products, other than for medical magnetic resonance imaging and superconducting magnetic energy storage products, has been significantly limited by the cooling requirements of LTS materials. Even if the technological hurdles currently limiting commercial uses of HTS and LTS products are overcome, it is uncertain whether a robust commercial market for those new and unproven products will ever develop. It is possible that the market demands we currently anticipate for our HTS and LTS products will not develop and that superconducting products will never achieve widespread commercial acceptance. We expect to spend significant amounts on the expansion of our manufacturing capacity, and our expansion projects may not be successful. In anticipation of significantly increased demand for our products, we have announced plans to build a facility exclusively dedicated to HTS wire manufacturing at the Devens Commerce Center in Devens, Massachusetts. Over the next two years, we plan to use a portion of the net proceeds from our March 2000 stock offering to buy land, construct a building and purchase equipment for the new HTS wire manufacturing facility in Devens, and for a new SMES manufacturing facility. We can only estimate the costs of these projects, and the actual costs may be significantly in excess of our estimates. In addition, we may be unable to lease suitable space for our new facilities on commercially acceptable terms, the completion of those new facilities may be delayed, or we may experience start-up difficulties or other problems once those facilities become operational. Finally, if increased demand for our products does not materialize, we will not generate sufficient revenue to offset the cost of establishing and operating these facilities. -5-

We have no experience manufacturing our products in commercial quantities. To be financially successful, we will have to manufacture our products in commercial quantities at acceptable costs while also preserving the quality levels achieved in manufacturing these products in limited quantities. This presents a number of technological and engineering challenges for us. We cannot assure you that we will be successful in developing product designs and manufacturing processes that permit us to manufacture our HTS and SMES products in commercial quantities at commercially acceptable costs while preserving quality. In addition, we may incur significant start-up costs and unforeseen expenses in our product design and manufacturing efforts. We have historically focused on research and development activities and have limited experience in marketing and selling our products. We have been primarily focused on research and development of our superconducting products. Consequently, our management team has limited experience directing our commercialization efforts which are essential to our future success. To date, we only have limited experience marketing and selling our products, and there are very few people anywhere who have significant experience marketing or selling superconducting products. Once our products are ready for commercial use, we will have to develop a marketing and sales organization that will effectively demonstrate the advantages of our products over both more traditional products and competing superconducting products or other technologies. We may not be successful in our efforts to market this new and unfamiliar technology, and we may not be able to establish an effective sales and distribution organization. We may decide to enter into arrangements with third parties for the marketing or distribution of our products, including arrangements in which our products, such as HTS wire, are included as a component of a larger product, such as a motor. If we do so, the financial benefits to us of commercializing our products would be dependent on the efforts of others. We may not be able to enter into marketing or distribution arrangements with third parties on financially acceptable terms, and third parties may not be successful in selling our products or applications incorporating our products. We depend on our strategic relationships with our corporate partners for the successful development and marketing of applications for our superconducting products. Our business strategy depends upon strategic relationships with corporate partners, which are intended to provide funding and technologies for our development efforts and assist us in marketing and distributing our products. Although we currently are party to a number of strategic relationships, we may not be able to maintain these relationships, and these relationships may not be technologically or commercially successful. We have an agreement with Pirelli relating to HTS wire for cables used to transmit both electric power and control signals. In general, we are obligated to sell our HTS cable wire exclusively to Pirelli, and Pirelli is obligated to buy this HTS wire exclusively from us or to pay us royalities for any of this wire that it manufactures for use in these applications anywhere in the world other than Japan. Pirelli continues to provide us with substantial funding and has been critical in assisting us in the development and commercialization of HTS cable wire. Consequently, we are significantly dependent on Pirelli for the commercial success of this cable wire in these applications. As we move toward commercialization of several of our products, we plan to use strategic alliances as an important means of marketing and selling our products. We may not be successful in establishing these relationships, and any strategic relationships established may not provide us with the commercial benefits we anticipate. See "Business--Strategic Relationships, Research Arrangements and Government Contracts" for a description of our significant strategic relationships. Our products face intense competition both from superconducting products developed by others and from traditional, non-superconducting products and alternative technologies. As we begin to market and sell our superconducting products, we will face intense competition both from competitors in the superconducting field and from vendors of traditional products and new technologies. There are -6-

many companies in the United States, Europe, Japan and Australia engaged in the development of HTS products, including 3M, Siemens, Alcatel and Sumitomo Electric Industries. The superconducting industry is characterized by rapidly changing and advancing technology. Our future success will depend in large part upon our ability to keep pace with advancing HTS and LTS technology and developing industry standards. In addition, our SMES products compete with a variety of non-superconducting products such as dynamic voltage restorers and battery-based power supply systems. Research efforts and technological advances made by others in the superconducting field or in other areas with applications to the power quality and reliability markets may render our development efforts obsolete. Many of our competitors have substantially greater financial resources, research and development, manufacturing and marketing capabilities than we have. In addition, as the HTS, power quality and power reliability markets develop, other large industrial companies may enter those fields and compete with us. See "Business--Competition" for more information on the competition we face. Third parties have or may acquire patents that cover the high temperature superconducting materials we use or may use in the future to manufacture our products. We expect that some or all of the HTS materials and technologies we use in designing and manufacturing our products are or will become covered by patents issued to other parties, including our competitors. If that is the case, we will need either to acquire licenses to these patents or to successfully contest the validity of these patents. The owners of these patents may refuse to grant licenses to us, or may be willing to do so only on terms that we find commercially unreasonable. If we are unable to obtain these licenses, we may have to contest the validity or scope of those patents to avoid infringement claims by the owners of these patents. It is possible that we will not be successful in contesting the validity or scope of a patent, or that we will not prevail in a patent infringement claim brought against us. Even if we are successful in such a proceeding, we could incur substantial costs and diversion of management resources in prosecuting or defending such a proceeding. See "Business-- Patents, Licenses and Trade Secrets" for more information on this subject. There are numerous patents issued in the field of superconducting materials and our patents may not provide meaningful protection for our technology. We own or have licensing rights under many patents and pending patent applications. However, the patents that we own or license may not provide us with meaningful protection of our technologies, and may not prevent our competitors from using similar technologies, for a variety of reasons, such as: . the patent applications that we or our licensors file may not result in patents being issued; . any patents issued may be challenged by third parties; and . others may independently develop similar technologies not protected by our patents or design around the patented aspects of any technologies we develop. Moreover, we could incur substantial litigation costs in defending the validity of our own patents. We also rely on trade secrets and proprietary know-how to protect our intellectual property. However, our non-disclosure agreements and other safeguards may not provide meaningful protection for our trade secrets and other proprietary information. See "Business--Patents, Licenses and Trade Secrets" for more information on this subject. Our success is dependent upon attracting and retaining qualified personnel. Our success will depend in large part upon our ability to attract and retain highly qualified research and development, management, manufacturing, marketing and sales personnel. Hiring those persons may be especially difficult due to the specialized nature of our business. In addition, the demand for qualified personnel is particularly acute in the New England and Wisconsin areas, where most of our operations are located, due to the currently low unemployment rate in these regions. -7-

We are particularly dependent upon the services of Dr. Gregory J. Yurek, our co-founder and our Chairman of the Board, President and Chief Executive Officer, and Dr. Alexis P. Malozemoff, our Chief Technical Officer. The loss of the services of either of those individuals could significantly damage our business and prospects. Our common stock may experience extreme market price and volume fluctuations. The market price of our common stock has historically experienced significant volatility and may continue to experience such volatility in the future. Factors such as technological achievements by us and our competitors, the establishment of development or strategic relationships with other companies, our introduction of commercial products, and our financial performance may have a significant effect on the market price of our common stock. In addition, the stock market in general, and the stock of high technology companies in particular, have in recent years experienced extreme price and volume fluctuations, which are often unrelated to the performance or condition of particular companies. Such broad market fluctuations could adversely affect the market price of our common stock. Following periods of volatility in the market price of a particular company's securities, securities class action litigation has often been brought against a company. If we become subject to this kind of litigation in the future, it could result in substantial litigation costs, a damages award against us and the diversion of our management's attention. We have anti-takeover provisions which may make it difficult for a third party to acquire us. We have adopted a shareholders rights plan, and we are subject to the provisions of an anti-takeover statute under Delaware law. Those provisions may make it more difficult for a third party to acquire us, even if such an acquisition might be favored by many of our stockholders. See "Description of Capital Stock" for a description of those provisions. SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION This prospectus includes and incorporates forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included or incorporated in this prospectus regarding our strategy, future operations, financial position, future revenues, projected costs, prospects, plans and objectives of management are forward-looking statements. The words "anticipates," "believes," "estimates," "expects," "intends," "may," "plans," "projects," "will," "would" and similar expressions are intended to identify forward-looking statements, although not all forward- looking statements contain these identifying words. We cannot guarantee that we actually will achieve the plans, intentions or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included or incorporated in this prospectus, particularly under the heading "Risk Factors," that we believe could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make. We do not assume any obligation to update any forward-looking statements. -8-

USE OF PROCEEDS We will not receive any proceeds from the sale of shares by the selling stockholders. The selling stockholders will pay any underwriting discounts and commissions and expenses incurred by the selling stockholders for brokerage, accounting, tax or legal services or any other expenses incurred by the selling stockholders in disposing of the shares. We will bear all other costs, fees and expenses incurred in effecting the registration of the shares covered by this prospectus, including, without limitation, all registration and filing fees, Nasdaq listing fees and fees and expenses of our counsel and our accountants. SELLING STOCKHOLDERS We issued the shares of common stock covered by this prospectus in a private placement in connection with our acquisition of substantially all of the assets of Integrated Electronics on June 1, 2000. Integrated Electronics subsequently distributed the shares to the selling stockholders in the form of a stock dividend. The following table sets forth, to our knowledge, certain information about the selling stockholders as of June 30, 2000. Beneficial ownership is determined in accordance with the rules of the SEC, and includes voting or investment power with respect to shares. Unless otherwise indicated below, to our knowledge, all persons named in the table have sole voting and investment power with respect to their shares of common stock, except to the extent authority is shared by spouses under applicable law. The inclusion of any shares in this table does not constitute an admission of beneficial ownership for the person named below. Shares of Common Stock Number of Shares Shares of Common Stock to be Beneficially Owned Prior to of Common Stock Beneficially Owned After Name of Selling stockholders Offering (1) Being Offered Offering (1)(2) - ---------------------------- ----------------------------- ------------------ ------------------------------ Number Percentage Number Percentage - ---------------------------- -------- ------------ ------------------ -------- ------------ Jeffrey A. Reichard 33,750 * 33,750 0 0% Nathan L. Jobe 3,750 * 3,750 0 0% __________________________ * Less than one percent. (1) Of the total shares of common stock listed as owned by the selling stockholders, a total of 9,375 shares are held in an escrow account to secure indemnification obligations of Integrated Electronics and the selling stockholders to us. It is expected that these shares (less any shares that may be distributed from the escrow account to us in satisfaction of indemnification claims) will be released from escrow and distributed to the selling stockholders on March 1, 2001. The number of shares indicated as owned by each of the selling stockholders includes those shares (representing 25% of the number of shares listed as beneficially owned by each selling stockholder) which such selling stockholder is entitled to receive upon distribution of these shares from the escrow account. (2) We do not know when or in what amounts the selling stockholders may offer shares for sale. The selling stockholders may not sell any or all of the shares offered by this prospectus. Because the selling stockholders may offer all or some of the shares pursuant to this offering, and because there are currently no agreements, arrangements or understandings with respect to the sale of any of the shares, we cannot estimate the number of the shares that will be held by the selling stockholders after completion of the offering. However, for purposes of this table, we have assumed that, after completion of the offering, none of the shares covered by this prospectus will be held by the selling stockholders. None of the selling stockholders has held any position or office with, or has otherwise had a material relationship with, us or any of our subsidiaries within the past three years, except that in connection with our -9-

acquisition of Integrated Electronics, we entered into employment agreements with Jeffrey Reichard and Nathan Jobe, members of Integrated Electronics, under which each will perform certain services for us. PLAN OF DISTRIBUTION The shares covered by this prospectus may be offered and sold from time to time by the selling stockholders. The term "selling stockholders" includes donees, pledgees, transferees or other successors-in-interest selling shares received after the date of this prospectus from a selling stockholder as a gift, pledge, partnership distribution or other non-sale related transfer. The selling stockholders will act independently of us in making decisions with respect to the timing, manner and size of each sale. Such sales may be made on one or more exchanges or in the over-the-counter market or otherwise, at prices and under terms then prevailing or at prices related to the then current market price or in negotiated transactions. The selling stockholders may sell their shares by one or more of, or a combination of, the following methods: . purchases by a broker-dealer as principal and resale by such broker- dealer for its own account pursuant to this prospectus; . ordinary brokerage transactions and transactions in which the broker solicits purchasers; . block trades in which the broker-dealer so engaged will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction; . an over-the-counter distribution in accordance with the rules of the Nasdaq National Market; . in privately negotiated transactions; and . in options transactions. In addition, any shares that qualify for sale pursuant to Rule 144 may be sold under Rule 144 rather than pursuant to this prospectus. To the extent required, this prospectus may be amended or supplemented from time to time to describe a specific plan of distribution. In connection with distributions of the shares or otherwise, the selling stockholders may enter into hedging transactions with broker-dealers or other financial institutions. In connection with such transactions, broker-dealers or other financial institutions may engage in short sales of the common stock in the course of hedging the positions they assume with the selling stockholders. The selling stockholders may also sell the common stock short and redeliver the shares to close out such short positions. The selling stockholders may also enter into option or other transactions with broker-dealers or other financial institutions which require the delivery to such broker-dealer or other financial institution of shares offered by this prospectus, which shares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction). The selling stockholders may also pledge shares to a broker-dealer or other financial institution, and, upon a default, such broker-dealer or other financial institution, may effect sales of the pledged shares pursuant to this prospectus (as supplemented or amended to reflect such transaction). In effecting sales, broker-dealers or agents engaged by the selling stockholders may arrange for other broker-dealers to participate. Broker-dealers or agents may receive commissions, discounts or concessions from the selling stockholderss in amount to be negotiated immediately prior to the sale. In offering the shares covered by this prospectus, the selling stockholders and any broker-dealers who execute sales for the selling stockholders may be deemed to be "underwriters" within the meaning of the Securities Act in connection with such sales. Any profits realized by the selling stockholders and the compensation of any broker-dealer may be deemed to be underwriting discounts and commissions. -10-

In order to comply with the securities laws of certain states, if applicable, the shares must be sold in such jurisdictions only through registered or licensed brokers or dealers. In addition, in certain states the shares may not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with. We have advised the selling stockholders that the anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of shares in the market and to the activities of the selling stockholders and their affiliates. In addition, we will make copies of this prospectus available to the selling stockholders for the purpose of satisfying the prospectus delivery requirements of the Securities Act. The selling stockholders may indemnify any broker-dealer that participates in transactions involving the sale of the shares against certain liabilities, including liabilities arising under the Securities Act. At the time a particular offer of shares is made, if required, a prospectus supplement will be distributed that will set forth the number of shares being offered and the terms of the offering, including the name of any underwriter, dealer or agent, the purchase price paid by any underwriter, any discount, commission and other item constituting compensation, any discount, commission or concession allowed or reallowed or paid to any dealer, and the proposed selling price to the public. We have agreed to indemnify the selling stockholders against certain liabilities, including certain liabilities under the Securities Act. We have agreed with the selling stockholders to keep the Registration Statement of which this prospectus constitutes a part effective until the earlier of (i) such time as all of the shares covered by this prospectus have been disposed of pursuant to and in accordance with the Registration Statement or (ii) __________ __, 2001. LEGAL MATTERS The validity of the shares offered by this prospectus has been passed upon by Hale and Dorr LLP. EXPERTS The financial statements incorporated in this Prospectus by reference to the Annual Report on Form 10-K for the year ended March 31, 2000, have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, independent accountants, given on the authority of said firm as experts in auditing and accounting. WHERE YOU CAN FIND MORE INFORMATION We file reports, proxy statements and other documents with the Securities and Exchange Commission. You may read and copy any document we file at the SEC's public reference room at Judiciary Plaza Building, 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549. You should call 1-800-SEC-0330 for more information on the public reference room. Our SEC filings are also available to you on the SEC's Internet site at http://www.sec.gov. This prospectus is part of a registration statement that we filed with the SEC. The registration statement contains more information than this prospectus regarding us and our common stock, including certain exhibits and schedules. You can obtain a copy of the registration statement from the SEC at the address listed above or from the SEC's Internet site. -11-

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE The SEC requires us to "incorporate" into this prospectus information that we file with the SEC in other documents. This means that we can disclose important information to you by referring to other documents that contain that information. The information incorporated by reference is considered to be part of this prospectus. Information contained in this prospectus and information that we file with the SEC in the future and incorporate by reference in this prospectus automatically updates and supersedes previously filed information. We incorporate by reference the documents listed below and any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, prior to the sale of all the shares covered by this prospectus. (1) Our Annual Report on Form 10-K for the year ended March 31, 2000; (2) All of our filings pursuant to the Exchange Act after the date of filing the initial registration statement and prior to effectiveness of the registration statement; and (3) The description of our common stock contained in our Registration Statement on Form 8-A filed on November 5, 1991. You may request a copy of these documents, which will be provided to you at no cost, by contacting: American Superconductor Corporation Two Technology Drive Westborough, MA 01581 Attention: Investor Relations Telephone: (508) 836-4200 -12-

PART II INFORMATION NOT REQUIRED IN PROSPECTUS Item 14. Other Expenses of Issuance and Distribution. The following table sets forth the various expenses to be incurred in connection with the sale and distribution of the securities being registered hereby, all of which will be borne by American Superconductor (except any underwriting discounts and commissions and expenses incurred by the selling stockholders for brokerage, accounting, tax or legal services or any other expenses incurred by the selling stockholders in disposing of the shares). All amounts shown are estimates except the Securities and Exchange Commission registration fee. Filing Fee - Securities and Exchange Commission.......... $ 364 Legal fees and expenses.................................. $ 10,000 Accounting fees and expenses............................. $ 3,000 Miscellaneous expenses................................... $ 2,000 -------- Total Expenses...................................... $ 15,364 ======== Item 15. Indemnification of Directors and Officers. Section 145 of the General Corporation Law of Delaware provides that a corporation has the power to indemnify a director, officer, employee or agent of the corporation and certain other persons serving at the request of the corporation in related capacities against amounts paid and expenses incurred in connection with an action or proceeding to which he is or is threatened to be made a party by reason of such position, if such person shall have acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation, and, in any criminal proceeding, if such person had no reasonable cause to believe his conduct was unlawful; provided that, in the case of actions brought by or in the right of the corporation, no indemnification shall be made with respect to any matter as to which such person shall have been adjudged to be liable to the corporation unless and only to the extent that the adjudicating court determines that such indemnification is proper under the circumstances. Article V of the Registrant's By-laws provides that a director or officer of the Registrant (a) shall be indemnified by the Registrant against all expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably incurred in connection with any litigation or other legal proceeding (other than an action by or in the right of the Registrant) brought against him by virtue of his position as a director or officer of the Registrant if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the Registrant, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful and (b) shall be indemnified by the Registrant against expenses (including attorneys' fees) incurred in connection with the defense or settlement of any action or suit by or in the right of the Registrant by virtue of his position as a director or officer of the Registrant if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the Registrant, except that no indemnification shall be made with respect to any such matter as to which such director or officer shall have been adjudged to be liable to the Registrant, unless and only to the extent that a court determines upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses as the court deems proper. Notwithstanding the foregoing, to the extent that a director or officer has been successful, on the merits or otherwise, he shall be indemnified against expenses (including attorneys' fees) actually and reasonably incurred by him in connection therewith. Expenses incurred in defending a civil or criminal action, suit or proceeding may be paid by the Registrant upon receipt of an undertaking by the director or officer to repay such amount if the Registrant ultimately determines that he is not entitled to indemnification. II-1

Indemnification shall be made by the Registrant upon a determination that the applicable standard of conduct required for indemnification has been met and that indemnification of a director or officer is proper. Such determination shall be made (a) by the Board of Directors by a majority vote of a quorum consisting of directors who were not parties to the action, or (b) if such a quorum is not obtainable, or if a quorum of disinterested directors so directs, by independent legal counsel in a written opinion, or (c) by the stockholders of the Registrant. Article V of the Registrant's By-laws further provides that the indemnification provided therein is not exclusive, and provides that to the extent the Delaware General Corporation Law is amended or supplemented, Article V shall be amended automatically and construed so as to permit indemnification and advancement of expenses to the fullest extent permitted by such law. Article EIGHTH of the Registrant's Certificate of Incorporation provides that no director of the Registrant shall be personally liable to the Registrant or its stockholders for monetary damages for breach of fiduciary duty as a director, provided, that a director shall remain liable (i) for any breach of such director's duty of loyalty to the Registrant or its stockholders, (ii) for acts or omissions not in good faith or which involve intention misconduct or a knowing violation of law, (iii) for participation in a Board of Directors' action authorizing an unlawful dividend or unlawful stock purchase or redemption under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which such director derived an improper personal benefit. The Registrant has a directors and officers liability insurance policy covering certain liabilities that may be incurred by its directors and officers. Certain of the Registrant's directors are indemnified against certain liabilities that may incur in their capacities as directors by the investment funds with which they are affiliated. Item 16. Exhibits EXHIBIT NUMBER DESCRIPTION ------- ------------- 4.1* Restated Certificate of Incorporation of the Registrant, as amended. 4.2** By-laws of the Registrant. 5.1 Opinion of Hale and Dorr LLP. 23.1 Consent of PricewaterhouseCoopers LLP. 23.2 Consent of Hale and Dorr LLP, included in Exhibit 5.1 filed herewith. 24.1 Power of Attorney (See page II-4 of this Registration Statement). __________ * Incorporated by reference to Exhibits to the Registrant's Registration Statement on Form S-3 (File No. 333-95261). ** Incorporated by reference to Exhibits to the Registrant's Registration Statement on Form S-1 (File No. 33-43647). Item 17. Undertakings. Item 512(a) of Regulation S-K. The undersigned Registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement: (i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933, as amended (the "Securities Act"); II-2

(ii) To reflect in the prospectus any facts or events arising after the effective date of this Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in this Registration Statement. Notwithstanding the foregoing, any increase or decrease in the volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective Registration Statement; and (iii) To include any material information with respect to the plan of distribution not previously disclosed in this Registration Statement or any material change to such information in this Registration Statement; provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if the information required to be included is a post-effective amendment by those paragraphs is contained in periodic reports filed by the Company pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), that are incorporated by reference in this Registration Statement. (2) That, for the purposes of determining any liability under the Securities Act, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at the time shall be deemed to be the initial bona fide offering thereof. (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. Item 512(b) of Regulation S-K. The Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein and the offering of such securities at the time shall be deemed to be the initial bona fide offering thereof. Item 512(h) of Regulation S-K. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the indemnification provisions described herein, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue. II-3

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Westborough, Commonwealth of Massachusetts, on July 27, 2000. AMERICAN SUPERCONDUCTOR CORPORATION By: /s/ Gregory J. Yurek ----------------------------------------- Gregory J. Yurek Chairman of the Board, President and Chief Executive Officer SIGNATURES AND POWER OF ATTORNEY We, the undersigned officers and directors of American Superconductor Corporation, hereby severally constitute and appoint Gregory J. Yurek, Stanley D. Piekos and Patrick J. Rondeau and each of them singly, our true and lawful attorneys with full power to any of them, and to each of them singly, to sign for us and in our names in the capacities indicated below the Registration Statement on Form S-3 filed herewith and any and all pre-effective and post- effective amendments to said Registration Statement and generally to do all such things in our name and behalf in our capacities as officers and directors to enable American Superconductor Corporation to comply with the provisions of the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by our said attorneys, or any of them, to said Registration Statement and any and all amendments thereto. Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated. II-4

Signature Title Date --------- ----- ---- /s/ Gregory J. Yurek Chairman of the Board, President, Chief Executive July 27, 2000 - ---------------------------------- Gregory J. Yurek Officer and Director (Principal Executive Officer) /s/ Stanley D. Piekos Vice President, Corporation Development, Chief July 27, 2000 - ---------------------------------- Stanley D. Piekos Financial Officer, Treasurer and Secretary (Principal Financial Officer) /s/ Thomas M. Rosa Chief Accounting Officer, Corporate Controller and July 27, 2000 - ---------------------------------- Thomas M. Rosa Assistant Secretary (Principal Accounting Officer) /s/ Albert J. Baciocco, Jr. Director July 27, 2000 - ---------------------------------- Albert J. Baciocco, Jr. __________________________________ Director _____________ Frank Borman /s/ Peter O. Crisp Director July 27, 2000 - ---------------------------------- Peter O. Crisp /s/ Richard Drouin Director July 27, 2000 - ---------------------------------- Richard Drouin /s/ Gerard Menjon Director July 27, 2000 - ---------------------------------- Gerard Menjon /s/ Andrew G.C. Sage, II Director July 27, 2000 - ---------------------------------- Andrew G.C. Sage, II /s/ John B. Vander Sande Director July 27, 2000 - ---------------------------------- John B. Vander Sande II-5

EXHIBIT INDEX EXHIBIT NUMBER DESCRIPTION - ---------- ------------- 4.1* Restated Certificate of Incorporation of the Registrant, as amended to date 4.2** By-laws of the Registrant. 5.1 Opinion of Hale and Dorr LLP. 23.1 Consent of PricewaterhouseCoopers LLP 23.2 Consent of Hale and Dorr LLP, included in Exhibit 5.1 filed herewith. 24.1 Power of Attorney (See page II-4 of this Registration Statement). __________ * Incorporated by reference to Exhibits to the Registrant's Registration Statement on Form S-3 (File No. 333-95261). ** Incorporated by reference to Exhibits to the Registrant's Registration Statement on Form S-1 (File No. 33-43647). II-6

EXHIBIT 5.1 HALE AND DORR LLP COUNSELLORS AT LAW 60 STATE STREET, BOSTON, MASSACHUSETTS 02109 617-526-6000 . FAX 617-526-5000 July 31, 2000 American Superconductor Corporation Two Technology Drive Westborough, MA 01581 Registration Statement on Form S-3 ---------------------------------- Ladies and Gentlemen: This opinion is furnished to you in connection with a Registration Statement on Form S-3 (the "Registration Statement") to be filed with the Securities and Exchange Commission (the "Commission") under the Securities Act of 1933, as amended (the "Securities Act"), for the registration of an aggregate of 37,500 shares of Common Stock, $.01 par value per share (the "Shares"), of American Superconductor Corporation, a Delaware corporation (the "Company"). All of the Shares are being registered on behalf of certain stockholders of the Company (the "Selling Stockholders"). We are acting as counsel for the Company in connection with the registration for resale of the Shares. We have examined signed copies of the Registration Statement to be filed with the Commission. We have also examined and relied upon minutes of meetings of the stockholders and the Board of Directors of the Company as provided to us by the Company, stock record books of the Company as provided to us by the Company, the Certificate of Incorporation and By-Laws of the Company, each as restated and/or amended to date, and such other documents as we have deemed necessary for purposes of rendering the opinions hereinafter set forth. In our examination of the foregoing documents, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as copies, the authenticity of the originals of such latter documents and the legal competence of all signatories to such documents. We assume that the appropriate action will be taken, prior to the offer and sale of the Shares, to register and qualify the Shares for sale under all applicable state securities or "blue sky" laws. We express no opinion herein as to the laws of any state or jurisdiction other than the state laws of the Commonwealth of Massachusetts, the General Corporation Law of the State of Delaware and the federal laws of the United States of America. Based upon and subject to the foregoing, we are of the opinion that the Shares have been duly authorized and are validly issued, fully paid and nonassessable. It is understood that this opinion is to be used only in connection with the offer and sale of the Shares while the Registration Statement is in effect. Please note that we are opining only as to the matters expressly set forth herein, and no opinion should be inferred as to any other matters. This opinion is based upon currently existing statutes, rules, regulations and judicial decisions, and we disclaim any obligation to advise you of any change in any of these sources of law or subsequent legal or factual developments which might affect any matters or opinions set forth herein.

American Superconductor Corporation July 31, 2000 Page 2 We hereby consent to the filing of this opinion with the Commission as an exhibit to the Registration Statement in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act and to the use of our name therein and in the related prospectus under the caption "Legal Matters." In giving such consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission. Very truly yours, /s/ HALE AND DORR LLP

EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated May 15, 2000 relating to the financial statements, which appear in American Superconductor Corporation's Annual Report on Form 10-K for the year ended March 31, 2000. We also consent to the reference to us under the heading "Experts" in such Registration Statement. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Boston, Massachusetts July 31, 2000