Filed Pursuant to Rule 424(b)(5)
Registration No. 333-251054​
CALCULATION OF REGISTRATION FEE
Title of Securities to be Registered
Proposed
Maximum
Aggregate
Offering Price(1)
Amount of
Registration Fee(1)
Common Stock, par value $0.0001 per share
$ 500,000,000 $ 54,550
(1)
Calculated in accordance with Rules 457(o) and 457(r) under the Securities Act of 1933, as amended. Represents deferred payment of the registration fees in connection with the registrant’s Registration Statement on Form S-3 (Registration No. 333-251054) being paid herewith.

PROSPECTUS SUPPLEMENT
(To Prospectus dated December 1, 2020)
Up to $500,000,000
[MISSING IMAGE: LG_FUELCELLENERGY-4C.JPG]
FuelCell Energy, Inc.
Common Stock
We have entered into an Open Market Sale AgreementSM (the “sales agreement”) with Jefferies LLC and Barclays Capital Inc., as sales agents (the “sales agents”), relating to the sale of the shares of our common stock offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of the sales agreement, under this prospectus supplement and the accompanying prospectus, we may offer and sell shares of our common stock, $0.0001 par value per share, having an aggregate offering price of up to $500,000,000, from time to time through the sales agents, acting as our sales agents, or directly to the sales agents, acting as principals.
Our common stock is listed on The Nasdaq Global Market under the symbol “FCEL.” On June 10, 2021, the last reported sale price for our common stock was $10.06 per share.
Sales of our common stock, if any, under this prospectus supplement and the accompanying prospectus may be made by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended (the “Securities Act”).
The sales agents are not required to sell any specific number or dollar amount of shares, but will act as our sales agents using commercially reasonable efforts consistent with their respective normal trading and sales practices, on mutually agreed terms between the sales agents and us. There is no arrangement for funds to be received in any escrow, trust or similar arrangement. Sales of our common stock under the sales agreement and this prospectus supplement will be made through only one sales agent on any particular trading day.
We will pay each sales agent a commission equal to 2.0% of the gross proceeds from each sale of shares of our common stock made through or to such sales agent from time to time under the sales agreement. The amount of proceeds we will receive from this offering, if any, will depend upon the actual number of shares of our common stock sold and the market price at which such shares are sold. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time.
In connection with the sale of common stock on our behalf, each sales agent will be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation of the sales agents will be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution to the sales agents with respect to certain civil liabilities, including liabilities under the Securities Act. See “Plan of Distribution” on page S-13 for more information.
Investing in our common stock involves a high degree of risk. You should read this prospectus supplement and the accompanying prospectus carefully before you make your investment decision. See “Risk Factors” beginning on page S-3 of this prospectus supplement, as well as the documents we file with the Securities and Exchange Commission that are incorporated by reference in this prospectus supplement and in the accompanying prospectus, including our most recent Annual Report on Form 10-K, our most recent Quarterly Report on Form 10-Q, and any subsequently filed Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, for more information.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.
Jefferies Barclays
The date of this prospectus supplement is June 11, 2021.

 
TABLE OF CONTENTS
Prospectus Supplement
S-ii
S-iii
S-1
S-2
S-3
S-5
S-6
S-11
S-13
S-14
S-14
S-14
Prospectus
1
1
1
3
3
4
4
9
10
11
12
12
12
We are offering to sell, and are seeking offers to buy, the securities only in jurisdictions where such offers and sales are permitted. The distribution of this prospectus supplement and the accompanying prospectus and the offering of the securities in certain jurisdictions may be restricted by law. Persons outside the United States who come into possession of this prospectus supplement and the accompanying prospectus must inform themselves about and observe any restrictions relating to the offering of the securities and the distribution of this prospectus supplement and the accompanying prospectus outside the United States. This prospectus supplement and the accompanying prospectus do not constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any securities offered by this prospectus supplement and the accompanying prospectus to or by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation.
 
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About This Prospectus Supplement and Prospectus
This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of the securities we are offering. The second part is the accompanying prospectus, which gives more general information, some of which may not apply to this offering. This prospectus supplement and the information incorporated by reference in this prospectus supplement also may add to, update and change information contained in, or incorporated by reference into, the accompanying prospectus. To the extent there is a conflict between the information contained in this prospectus supplement, on the one hand, or in any document incorporated by reference herein that was filed with the Securities and Exchange Commission (“SEC”) before the date of this prospectus supplement, on the other hand, you should rely on the information in this prospectus supplement. If any statement in one of these documents is inconsistent with a statement in another document having a later date, for example, a document incorporated by reference in this prospectus supplement or the accompanying prospectus, the statement in the document having the later date modifies or supersedes the earlier statement.
The accompanying prospectus is part of a registration statement that we filed with the SEC using a shelf registration process. Under the shelf registration process, from time to time, we may offer and sell any of the securities described in the accompanying prospectus separately or together with other securities described therein.
You should read this prospectus supplement along with the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and the accompanying prospectus and any related free writing prospectus that we authorized to be distributed to you carefully before you invest. These documents contain important information you should consider when making your investment decision. You should also read and consider the information in the documents to which we have referred you under the heading “Where You Can Find Additional Information” on page S-14 of this prospectus supplement and on page 12 of the accompanying prospectus and under the heading “Incorporation by Reference” on page 1 of the accompanying prospectus.
We have not authorized anyone to provide you with any information other than the information contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus and any related free writing prospectus that we authorized to be distributed to you or to which we have referred you. If anyone provides you with different or additional information, you should not rely on it. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you.
Neither we nor anyone acting on our behalf is making an offer to sell these shares of common stock in any jurisdiction where the offer or sale is not permitted, and you should not consider this prospectus supplement or the accompanying prospectus to be an offer or solicitation relating to the securities in any jurisdiction in which such an offer or solicitation relating to the securities is not authorized. You should assume that the information contained in this prospectus supplement, the accompanying prospectus, any related free writing prospectus that we have authorized to be delivered to you and the documents incorporated by reference herein and therein is accurate only as of their respective dates, regardless of the time of delivery of such documents or of any sale of securities. Our business, financial condition, results of operations and prospects may have changed since those dates. Furthermore, you should not consider this prospectus supplement or the accompanying prospectus to be an offer or solicitation relating to the securities if the person making the offer or solicitation is not qualified to do so, or if it is unlawful for you to receive such an offer or solicitation.
For purposes of this prospectus supplement and the accompanying prospectus, references to “FuelCell Energy,” “we,” “our,” “our Company” and “the Company” are to FuelCell Energy, Inc. and our consolidated subsidiaries, unless otherwise indicated or the context otherwise requires.
 
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Cautionary Statement Regarding Forward-Looking Statements
This prospectus supplement and the accompanying prospectus, the documents incorporated by reference herein and therein and any related free writing prospectuses issued by us may contain forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 (the “PSLRA”), about our financial condition, results of operations, plans, objectives, expectations, future performance and business. Statements preceded by, followed by or that include words such as “expects,” “anticipates,” “estimates,” “goals,” “projects,” “intends,” “plans,” “believes,” “predicts,” “should,” “seeks,” “will,” “could,” “would,” “may,” “forecast,” or words or phrases of similar import are intended to identify some of the forward-looking statements and are included, along with this statement, for purposes of complying with the safe harbor provisions of the PSLRA. Forward-looking statements are neither historical facts, nor assurances of future performance. Instead, such statements are based only on our beliefs, expectations and assumptions regarding the future. As such, the realization of matters expressed in forward-looking statements involves inherent risks and uncertainties. The following factors, among others, could cause actual results and future events to differ materially from those set forth or contemplated in the forward-looking statements:

general risks associated with product development and manufacturing;

general economic conditions;

changes in the utility regulatory environment;

changes in the utility industry and the markets for distributed generation, distributed hydrogen, and fuel cell power platforms configured for carbon capture or carbon sequestration;

potential volatility of energy prices;

availability of government subsidies and economic incentives for alternative energy technologies;

our ability to remain in compliance with U.S. federal and state and foreign government laws and regulations and the listing rules of The Nasdaq Stock Market;

rapid technological change;

competition;

the risk that our bid awards will not convert to contracts or that our contracts will not convert to revenue;

market acceptance of our products;

changes in accounting policies or practices adopted voluntarily or as required by accounting principles generally accepted in the United States;

factors affecting our liquidity position and financial condition;

government appropriations;

the ability of the government and third parties to terminate their development contracts at any time;

the ability of the government to exercise “march-in” rights with respect to certain of our patents;

the arbitration and other legal proceedings with POSCO Energy Co., Ltd.;

our ability to implement our strategy;

our ability to reduce our levelized cost of energy and our cost reduction strategy generally;

our ability to protect our intellectual property;

litigation and other proceedings;

the risk that commercialization of our products will not occur when anticipated;

our need for and the availability of additional financing;

our ability to generate positive cash flow from operations;

our ability to service our long-term debt;

our ability to increase the output and longevity of our power platforms and to meet the performance requirements of our contracts;
 
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our ability to expand our customer base and maintain relationships with our largest customers and strategic business allies;

changes by the U.S. Small Business Administration or other governmental authorities to, or with respect to the implementation or interpretation of, the Coronavirus Aid, Relief, and Economic Security Act, the Paycheck Protection Program or related administrative matters;

concerns with, threats of, or the consequences of, pandemics, contagious diseases or health epidemics, including the 2019 novel coronavirus (COVID-19), and resulting supply chain disruptions, shifts in clean energy demand, impacts to our customers’ capital budgets and investment plans, impacts to our project schedules, impacts to our ability to service existing projects, or the demand for our products; and

the other factors, risks and uncertainties described in or incorporated by reference into this prospectus supplement, including under the caption “Risk Factors,” and the accompanying prospectus.
Any forward-looking statement contained in this prospectus supplement, the accompanying prospectus, the documents incorporated by reference herein and therein, and any related free writing prospectuses issued by us speaks only as of the date on which the statement was made, and we undertake no obligation to update publicly or revise any forward-looking statements, whether oral or written, for any reason, whether as a result of new information, future events or otherwise. In addition to the factors outlined above, new risks emerge from time to time, and we cannot predict all of the risks that may impact our business or the extent to which any particular risk, or combination of risks, may cause actual results to differ materially from those contained in any forward-looking statement.
 
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Prospectus Supplement Summary
The following summary highlights basic information about FuelCell Energy and this offering. Because it is a summary, it does not contain all of the information that may be important to you. You should review this entire prospectus supplement and the accompanying prospectus carefully, including our consolidated financial statements and other information incorporated by reference in this prospectus supplement and the accompanying prospectus, before making an investment decision. In addition, please carefully read the “Risk Factors” section beginning on page S-3 of this prospectus supplement, the accompanying prospectus, our Annual Report on Form 10-K for the fiscal year ended October 31, 2020, our Quarterly Reports on Form 10-Q, and any amendment or update thereto reflected in subsequent filings with the SEC and incorporated by reference in this prospectus supplement and the accompanying prospectus.
Our Business
FuelCell Energy is a global leader in sustainable clean energy technologies that address some of the world’s most critical challenges around energy, safety, and global urbanization. As a leading global manufacturer of proprietary fuel cell technology platforms, we are uniquely positioned to serve customers worldwide with sustainable products and solutions for businesses, utilities, governments, and municipalities. Our solutions are designed to enable a world empowered by clean energy, enhancing the quality of life for people around the globe. We target large-scale power users with our megawatt-class installations globally, and currently offer sub-megawatt solutions for smaller power consumers in Europe. To provide a frame of reference, one megawatt is adequate to continually power approximately 1,000 average sized U.S. homes. Our customer base includes utility companies, municipalities, universities, hospitals, government entities/military bases and a variety of industrial and commercial enterprises. Our leading geographic markets are currently the United States and South Korea, and we are pursuing opportunities in other countries around the world.
FuelCell Energy, based in Connecticut, was founded in 1969 as a New York corporation to provide applied research and development services on a contract basis. We completed our initial public offering in 1992 and reincorporated in Delaware in 1999. We began selling stationary fuel cell power plants commercially in 2003.
Corporate Information
Our principal executive offices are located at 3 Great Pasture Road, Danbury, Connecticut 06810. Our telephone number is (203) 825-6000. We maintain a web site at the following Internet address: www.fuelcellenergy.com. The information on, or that can be accessed through, our web site is not incorporated by reference in this prospectus supplement or in the accompanying prospectus, and you should not consider it to be a part of this prospectus supplement or the accompanying prospectus. Our web site address is included as an inactive textual reference only.
 
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The Offering
Issuer
FuelCell Energy, Inc.
Common stock offered by us
Shares of our common stock having an aggregate offering price of up to $500,000,000.
Manner of offering
“At the market offering” that may be made from time to time through or to our sales agents, Jefferies LLC and Barclays Capital Inc. See “Plan of Distribution” on page S-13 of this prospectus supplement.
Use of proceeds
We intend to use the net proceeds from this offering, if any, to accelerate the development and commercialization of our Advanced Technologies products, including our solid oxide platform, for project development, for internal research and development, to invest in capacity expansion for solid oxide and carbonate fuel cell manufacturing, and for project financing, working capital support, and general corporate purposes.
See “Use of Proceeds” on page S-5 for additional information.
Nasdaq Global Market symbol
FCEL
Risk factors
An investment in our common stock involves a high degree of risk. See “Risk Factors” beginning on page S-3 of this prospectus supplement and other information included in this prospectus supplement, the accompanying prospectus and the documents incorporated by reference in this prospectus supplement and the accompanying prospectus for a discussion of factors you should carefully consider before deciding to invest in our common stock.
Except as otherwise indicated, the information contained in this prospectus supplement assumes the sale of all of the shares offered hereby.
 
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Risk Factors
An investment in our common stock involves a high degree of risk. Prior to making a decision about investing in our securities, you should carefully consider the specific risk factors discussed below as well as the risk factors discussed under the sections entitled “Risk Factor Summary” and “Risk Factors” in our Annual Report on Form 10-K for the year ended October 31, 2020, our Quarterly Report on Form 10-Q for the quarter ended April 30, 2021 and our subsequent Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings we make under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), each of which is incorporated by reference in this prospectus supplement in its entirety, together with all of the other information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus, the documents incorporated by reference herein and therein, and any related free writing prospectuses we may issue. The risks and uncertainties we have described are not the only ones we face. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our operations. If any such risks actually occur, our business, financial condition, or results of operations could be materially and adversely affected. In such cases, the trading price of our common stock could decline, and you may lose all or part of your investment.
Risks Related to this Offering
Management will have broad discretion as to the use of the proceeds from this offering, and we may use the proceeds in ways in which you and other stockholders may disagree.
We have not designated any amount of the net proceeds we will receive from this offering for any particular purpose. Accordingly, our management will have broad discretion as to the application of such net proceeds and could use them for purposes other than those contemplated at the time of this offering. Our stockholders may not agree with the manner in which our management chooses to allocate and spend such net proceeds. In addition, such proceeds could be applied in ways that do not improve our operating results or increase the value of your investment. Our failure to apply these funds effectively could have a material adverse effect on our business, delay the development of our products and cause the price of our common stock to decline.
Investors in this offering may suffer immediate and substantial dilution.
Because the price per share of common stock in this offering may be substantially higher than the net tangible book value per share of our common stock, investors in this offering may suffer immediate and substantial dilution. The shares in this offering will be sold at market prices which may fluctuate substantially. Please refer to the section entitled “Dilution” below for a more detailed illustration of the dilution you may incur if you participate in this offering.
The actual number of shares we will issue in this offering under the sales agreement with the sales agents, at any one time or in total, is uncertain.
Subject to certain limitations set forth in the sales agreement with the sales agents and compliance with applicable law, we have the discretion to deliver issuance notices to the sales agents at any time throughout the term of the sales agreement. The number of shares that are sold by the sales agents, if any, after we deliver an issuance notice will fluctuate based on the market price of our common stock during the period during which sales are made and the limits we set with the sales agents.
Sales of a substantial number of our shares of common stock in the public market could cause our stock price to fall.
We may issue and sell additional shares of common stock in the public markets, including during this offering. As a result, a substantial number of our shares of common stock may be sold in the public market. Sales of a substantial number of our shares of common stock in the public markets, including during this offering, or the perception that such sales could occur, could depress the market price of our common stock and impair our ability to raise capital through the sale of additional equity securities.
You may experience future dilution as a result of future equity offerings or the exercise of our outstanding options or warrants.
In order to raise additional capital, we may in the future offer additional shares of our common stock or other securities convertible into or exchangeable for our common stock at prices that may not be the same as the
 
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price per share in this offering. We may sell shares of our common stock or other securities convertible into or exchangeable for our common stock in any other offering at a price per share that is less than the price per share paid by investors in this offering, and investors purchasing shares of our common stock or other securities in the future could have rights superior to existing stockholders. The exercise of our outstanding options and warrants may adversely affect our stock price due to sales of a large number of shares of our common stock or the perception that such sales could occur. These factors also could make it more difficult to raise funds through future offerings of our securities, and could adversely impact the terms under which we could obtain additional equity capital. Exercise of outstanding options and warrants or any future issuance of additional shares of our common stock or other equity securities, including but not limited to options, warrants, restricted stock units or other derivative securities convertible into our common stock, may result in significant dilution to our stockholders and may decrease our stock price.
The common stock offered hereby will be sold in “at the market offerings,” and investors who buy shares at different times will likely pay different prices.
Investors who purchase shares in this offering at different times will likely pay different prices, and so may experience different outcomes in their investment results. We will have discretion, subject to market demand, to vary the timing, prices and numbers of shares sold, and the sales agreement does not specify any required minimum or maximum sales price. Investors may experience a decline in the value of their shares as a result of share sales made at prices lower than the prices they paid.
 
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Use of Proceeds
In accordance with the terms of the sales agreement, under this prospectus supplement and the accompanying prospectus, we may issue and sell shares of our common stock having an aggregate offering price of up to $500,000,000 from time to time through or to the sales agents. The amount of proceeds we will receive from this offering, if any, will depend upon the actual number of shares of our common stock sold and the market price at which such shares are sold. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time.
We intend to use the net proceeds from this offering to accelerate the development and commercialization of our Advanced Technologies products, including our solid oxide platform, for project development, for internal research and development, to invest in capacity expansion for solid oxide and carbonate fuel cell manufacturing, and for project financing, working capital support, and general corporate purposes.
Due to the fact that we regularly review and evaluate our liquidity needs for various purposes, we do not believe we can provide the approximate amounts of the net proceeds that will be allocated to each of these purposes with certainty. As such, we have not specifically allocated the net proceeds among these purposes as of the date of this prospectus supplement. Such decisions will depend on market conditions and our liquidity needs as they evolve over time. Pending their use, we intend to invest the net proceeds to us from this offering in short-term, investment grade, interest bearing instruments or hold them as cash.
Our management will have broad discretion in the allocation of the net proceeds of this offering, and investors will be relying on the judgment of our management with regard to the use of these net proceeds.
 
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Description of Capital Stock
General
The following description of our capital stock is a summary and does not purport to be complete. It is subject to, and qualified in its entirety by reference to, our Certificate of Incorporation, as amended (the “Certificate of Incorporation”), including the Amended Certificate of Designation for the 5% Series B Cumulative Convertible Perpetual Preferred Stock (the “Series B Certificate of Designation”), and our Amended and Restated By-laws (the “By-laws”). We encourage you to read our Certificate of Incorporation (including the Series B Certificate of Designation), our By-laws and the applicable provisions of the Delaware General Corporation Law for additional information.
Authorized and Outstanding Capital Stock
Under our Certificate of Incorporation, we are authorized to issue 500,000,000 shares of common stock, par value $0.0001 per share, and 250,000 shares of preferred stock, par value $0.01 per share, in one or more series designated by our board of directors, of which 105,875 shares of our preferred stock have been designated as 5% Series B Cumulative Convertible Perpetual Preferred Stock (“Series B Preferred Stock”). Pursuant to our Certificate of Incorporation, our undesignated shares of preferred stock include all of our shares of preferred stock that were previously designated as Series C Convertible Preferred Stock and Series D Convertible Preferred Stock, as all such shares have been retired and therefore have the status of authorized and unissued shares of preferred stock undesignated as to series.
As of June 10, 2021, 322,495,370 shares of our common stock were issued and outstanding and 64,020 shares of our Series B Preferred Stock were issued and outstanding. No other shares of our preferred stock were issued and outstanding.
As of June 10, 2021, we were obligated, if and when the holders exercise their conversion rights, to issue approximately 37,837 shares of our common stock upon conversion of all of the issued and outstanding Series B Preferred Stock.
As of June 10, 2021, there were outstanding options to purchase 22,388 shares of our common stock under our equity incentive plan, 1,141,953 shares of our common stock were reserved for issuance upon time-based vesting of outstanding restricted stock units granted under our equity incentive plan, 2,865,028 shares of our common stock were reserved for potential issuance in connection with the settlement of performance-based restricted stock units under our equity incentive plan, 8,003,124 shares of our common stock were available for future grants of awards under our equity incentive plan, and 25,870 shares of our common stock were reserved for future issuance under our employee stock purchase plan.
As of June 10, 2021, there were outstanding Series C Warrants to Purchase Common Stock, dated May 3, 2017, to purchase up to 950,102 shares of our common stock. The exercise price of these warrants is $19.20, and the expiration date of such warrants is May 3, 2022.
As of June 10, 2021, there were 114 holders of record of our common stock.
Common Stock
Voting Rights.   The holders of our common stock have one vote per share. Holders of our common stock are not entitled to vote cumulatively for the election of directors. Generally, all matters to be voted on by stockholders (including the election of directors in uncontested elections) must be approved by a majority of the votes properly cast on the matter at a meeting at which a quorum is present, subject to any voting rights granted to holders of any then-outstanding preferred stock. (The voting rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”). A plurality voting standard applies in contested director elections (i.e., when the number of nominees for election as directors exceeds the number of directors to be elected at such meeting).
Dividends.   Holders of our common stock will share ratably in any dividends declared by our board of directors, subject to the preferential rights of any of our preferred stock then outstanding. (The dividend rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”). Dividends consisting of shares of our common stock may be paid to holders of shares of our common
 
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stock. We have never paid a cash dividend on our common stock and do not anticipate paying any cash dividends on our common stock in the foreseeable future.
Liquidation Rights.   In the event of our liquidation, dissolution or winding up, after payment of liabilities and liquidation preferences on any of our preferred stock then-outstanding, the holders of shares of our common stock are entitled to share ratably in all assets available for distribution. (The liquidation and other rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”).
Other Rights.   Holders of shares of our common stock (solely in their capacity as holders of shares of our common stock) have no preemptive rights or rights to convert their shares of our common stock into any other securities. There are no redemption or sinking fund provisions applicable to our common stock.
Listing on The Nasdaq Global Market.   Our common stock is listed on The Nasdaq Global Market under the symbol “FCEL.”
Transfer Agent and Registrar.   The transfer agent and registrar for our common stock is American Stock Transfer & Trust Company, New York.
Series B Preferred Stock
Ranking.   Shares of our Series B Preferred Stock rank with respect to dividend rights and rights upon our liquidation, winding up or dissolution:

senior to shares of our common stock;

junior to our debt obligations; and

effectively junior to our subsidiaries’ (i) existing and future liabilities and (ii) capital stock held by others.
Dividends.   The Series B Preferred Stock pays cumulative annual dividends of $50.00 per share, which are payable quarterly in arrears on February 15, May 15, August 15 and November 15. Dividends accumulate and are cumulative from the date of original issuance. Unpaid accumulated dividends do not bear interest.
The dividend rate is subject to upward adjustment as set forth in the Series B Certificate of Designation if we fail to pay, or to set apart funds to pay, any quarterly dividend on the Series B Preferred Stock. The dividend rate is also subject to upward adjustment as set forth in the Registration Rights Agreement entered into with the initial purchasers of the Series B Preferred Stock (the “Registration Rights Agreement”) if we fail to satisfy our registration obligations with respect to the Series B Preferred Stock (or the underlying shares of common stock) under the Registration Rights Agreement.
No dividends or other distributions may be paid or set apart for payment on our common stock (other than a dividend payable solely in shares of a like or junior ranking), nor may any stock junior to or on parity with the Series B Preferred Stock be redeemed, purchased or otherwise acquired for any consideration (or any money paid to or made available for a sinking fund for such stock) by us or on our behalf  (except by conversion into or exchange for shares of a like or junior ranking), unless all accumulated and unpaid dividends on the Series B Preferred Stock have been paid or funds or shares of common stock have been set aside for payment of such accumulated and unpaid dividends.
The dividend on the Series B Preferred Stock may be paid in cash or, at the option of the holder, in shares of our common stock, which will be registered pursuant to a registration statement to allow for the immediate sale of these shares of common stock in the public market.
Liquidation.   The holders of Series B Preferred Stock are entitled to receive, in the event that the Company is liquidated, dissolved or wound up, whether voluntarily or involuntarily, $1,000.00 per share plus all accumulated and unpaid dividends up to but excluding the date of such liquidation, dissolution, or winding up (the “Liquidation Preference”). Until the holders of Series B Preferred Stock receive the Liquidation Preference with respect to their shares of Series B Preferred Stock in full, no payment will be made on any junior shares, including shares of our common stock. After the Liquidation Preference is paid in full, holders of the Series B Preferred Stock will not be entitled to receive any further distribution of our assets. As of April 30, 2021, the issued and outstanding shares of Series B Preferred Stock had an aggregate Liquidation Preference of $64.0 million.
 
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Conversion Rights.   Each share of Series B Preferred Stock may be converted at any time, at the option of the holder, into 0.591 shares of our common stock (which is equivalent to an initial conversion price of $1,692.00 per share) plus cash in lieu of fractional shares. The conversion rate is subject to adjustment upon the occurrence of certain events, as described in the Series B Certificate of Designation. The conversion rate is not adjusted for accumulated and unpaid dividends. If converted, holders of Series B Preferred Stock do not receive a cash payment for all accumulated and unpaid dividends; rather, all accumulated and unpaid dividends are canceled.
We may, at our option, cause shares of Series B Preferred Stock to be automatically converted into that number of shares of our common stock that are issuable at the then-prevailing conversion rate. We may exercise our conversion right only if the closing price of our common stock exceeds 150% of the then-prevailing conversion price ($1,692.00 per share as of April 30, 2021) for 20 trading days during any consecutive 30 trading day period, as described in the Series B Certificate of Designation.
If the holders of Series B Preferred Stock elect to convert their shares in connection with certain “fundamental changes” ​(as defined in the Series B Certificate of Designation and described below), we will in certain circumstances increase the conversion rate by a number of additional shares of common stock upon conversion or, in lieu thereof, we may in certain circumstances elect to adjust the conversion rate and related conversion obligation so that shares of Series B Preferred Stock are converted into shares of the acquiring or surviving company, in each case as described in the Series B Certificate of Designation.
The adjustment of the conversion price is to prevent dilution of the interests of the holders of the Series B Preferred Stock from certain dilutive transactions with holders of our common stock.
Redemption.   We do not have the option to redeem the Series B Preferred Stock. However, holders of the Series B Preferred Stock can require us to redeem all or a portion of their shares of Series B Preferred Stock at a redemption price equal to the Liquidation Preference of the shares to be redeemed in the case of a “fundamental change” ​(as further described in the Series B Certificate of Designation). A fundamental change will be deemed to have occurred if any of the following occurs:

any “person” or “group” is or becomes the beneficial owner, directly or indirectly, of 50% or more of the total voting power of all classes of our capital stock then outstanding and normally entitled to vote in the election of directors;

during any period of two consecutive years, individuals who at the beginning of such period constituted the board of directors of the Company (together with any new directors whose election to our board of directors or whose nomination for election by the stockholders was approved by a vote of 66 2/3% of our directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the directors of the Company then in office;

the termination of trading of our common stock on The Nasdaq Stock Market and our common stock is not approved for trading or quoted on any other U.S. securities exchange or established over-the-counter trading market in the U.S.; or

we (i) consolidate with or merge with or into another person or another person merges with or into our Company or (ii) sell , assign, transfer, lease, convey or otherwise dispose of all or substantially all of the assets of the Company and certain of its subsidiaries, taken as a whole, to another person and, in the case of any such merger or consolidation described in clause (i), the securities that are outstanding immediately prior to such transaction (and which represent 100% of the aggregate voting power of our voting stock) are changed into or exchanged for cash, securities or property, unless pursuant to the transaction such securities are changed into or exchanged for securities of the surviving person that represent, immediately after such transaction, at least a majority of the aggregate voting power of the voting stock of the surviving person.
Notwithstanding the foregoing, holders of shares of Series B Preferred Stock will not have the right to require us to redeem their shares if:

the last reported sale price of shares of our common stock for any five trading days within the 10 consecutive trading days ending immediately before the later of the fundamental change or its
 
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announcement equaled or exceeded 105% of the conversion price of the Series B Preferred Stock immediately before the fundamental change or announcement;

at least 90% of the consideration (excluding cash payments for fractional shares and in respect of dissenters’ appraisal rights) in the transaction or transactions constituting the fundamental change consists of shares of capital stock traded on a U.S. national securities exchange or quoted on The Nasdaq Stock Market, or which will be so traded or quoted when issued or exchanged in connection with a fundamental change, and as a result of the transaction or transactions, shares of Series B Preferred Stock become convertible into such publicly traded securities; or

in the case of a merger or consolidation constituting a fundamental change (as described in the fourth bullet above), the transaction is affected solely to change our jurisdiction of incorporation.
Moreover, we will not be required to redeem any Series B Preferred Stock upon the occurrence of a fundamental change if a third party makes an offer to purchase the Series B Preferred Stock in the manner, at the price, at the times and otherwise in compliance with the requirements set forth above and such third party purchases all shares of Series B Preferred Stock validly tendered and not withdrawn.
We may, at our option, elect to pay the redemption price in cash, in shares of our common stock valued at a discount of 5% from the market price of shares of our common stock, or in any combination thereof. Notwithstanding the foregoing, we may only pay such redemption price in shares of our common stock that are registered under the Securities Act and eligible for immediate sale in the public market by non-affiliates of our Company.
Voting Rights.   Holders of Series B Preferred Stock currently have no voting rights; however, holders may receive certain voting rights, as described in the Series B Certificate of Designation, if (a) dividends on any shares of Series B Preferred Stock, or any other class or series of stock ranking on parity with the Series B Preferred Stock with respect to the payment of dividends, shall be in arrears for dividend periods, whether or not consecutive, containing in the aggregate a number of days equivalent to six calendar quarters or (b) we fail to pay the redemption price, plus accrued and unpaid dividends, if any, on the redemption date for shares of Series B Preferred Stock following a fundamental change. In each such event, the holders of Series B Preferred Stock (voting separately as a class with all other classes or series of stock ranking on parity with the Series B Preferred Stock with respect to the payment of dividends and upon which like voting rights have been conferred and are exercisable) will be entitled to elect two directors to the Company’s board of directors in addition to those directors already serving on the Company’s board of directors at such time (the “Series B Directors”), at the next annual meeting of the Company’s stockholders (or at a special meeting of the Company’s stockholders called for such purpose, whichever is earlier). The right to elect the Series B Directors will continue for each subsequent annual meeting of the Company’s stockholders until all dividends accumulated on the shares of Series B Preferred Stock have been fully paid or set aside for payment or the Company pays in full or sets aside for payment such redemption price, plus accrued but unpaid dividends, if any, on the redemption date for the shares of Series B Preferred Stock following a fundamental change. The term of office of any Series B Directors will terminate immediately upon the termination of the right of holders of Series B Preferred Stock to elect such Series B Directors, as described in this paragraph. Each holder of Series B Preferred Stock will have one vote for each share of Series B Preferred Stock held in the election of Series B Directors. We previously failed to make timely payment of the accrued dividends on the Series B Preferred Stock with respect to the May 15, 2019 and August 15, 2019 dividend payment dates. Such amounts were fully paid on or about November 15, 2019.
So long as any shares of Series B Preferred Stock remain outstanding, we will not, without the consent of the holders of at least two-thirds of the shares of Series B Preferred Stock outstanding at the time (voting separately as a class with all other series of preferred stock, if any, on parity with our Series B Preferred Stock upon which like voting rights have been conferred and are exercisable) issue or increase the authorized amount of any class or series of shares ranking senior to the outstanding shares of the Series B Preferred Stock as to dividends or upon liquidation. In addition, we will not, subject to certain conditions, amend, alter or repeal provisions of our Certificate of Incorporation, including the Series B Certificate of Designation, whether by merger, consolidation or otherwise, so as to adversely amend, alter or affect any power, preference or special right of the outstanding shares of Series B Preferred Stock or the holders thereof without the affirmative vote of not less than two-thirds of the issued and outstanding shares of Series B Preferred Stock.
 
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Anti-Takeover Provisions
Provisions of our Certificate of Incorporation and By-laws.   A number of provisions of our Certificate of Incorporation and By-laws concern matters of corporate governance and the rights of stockholders. Some of these provisions, including, but not limited to, the inability of stockholders to take action by unanimous written consent, certain advance notice requirements for stockholder proposals and director nominations, supermajority voting provisions with respect to any amendment of voting rights provisions, the filling of vacancies on the board of directors by the affirmative vote of a majority of the remaining directors, and the ability of the board of directors to issue shares of preferred stock and to set the voting rights, preferences and other terms thereof without further stockholder action, may be deemed to have an anti-takeover effect and may discourage takeover attempts not first approved by the board of directors, including takeovers which stockholders may deem to be in their best interests. If takeover attempts are discouraged, temporary fluctuations in the market price of shares of our common stock, which may result from actual or rumored takeover attempts, may be inhibited. These provisions, together with the ability of the board of directors to issue preferred stock without further stockholder action, could also delay or frustrate the removal of incumbent directors or the assumption of control by our stockholders, even if the removal or assumption would be beneficial to our stockholders. These provisions could also discourage or inhibit a merger, tender offer or proxy contest, even if favorable to the interests of stockholders, and could depress the market price of our common stock. The board of directors believes these provisions are appropriate to protect our interests and the interests of our stockholders. The board of directors has no present plans to adopt any further measures or devices which may be deemed to have an “anti-takeover effect.”
Delaware Anti-Takeover Provisions.   We are subject to Section 203 of the Delaware General Corporation Law, which prohibits a publicly-held Delaware corporation from engaging in a “business combination,” except under certain circumstances, with an “interested stockholder” for a period of three years following the date such person became an “interested stockholder” unless:

before such person became an interested stockholder, the board of directors of the corporation approved either the business combination or the transaction that resulted in the interested stockholder becoming an interested stockholder;

upon the consummation of the transaction that resulted in the interested stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding shares held by directors who are also officers of the corporation and shares held by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

at or following the time such person became an interested stockholder, the business combination is approved by the board of directors of the corporation and authorized at an annual or special meeting of stockholders (and not by written consent) by the affirmative vote of the holders of at least 6623% of the outstanding voting stock of the corporation which is not owned by the interested stockholder.
The term “interested stockholder” generally is defined as a person who, together with affiliates and associates, owns, or, within the three years prior to the determination of interested stockholder status, owned, 15% or more of a corporation’s outstanding voting stock. The term “business combination” includes mergers, asset or stock sales and other similar transactions resulting in a financial benefit to an interested stockholder. Section 203 makes it more difficult for an “interested stockholder” to effect various business combinations with a corporation for a three-year period. The existence of this provision would be expected to have an anti-takeover effect with respect to transactions not approved in advance by the board of directors, including discouraging attempts that might result in a premium over the market price for the shares of our common stock held by stockholders. A Delaware corporation may “opt out” of Section 203 with an express provision in its original certificate of incorporation or any amendment thereto. Our Certificate of Incorporation does not contain any such exclusion.
 
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Dilution
If you purchase any of the shares of common stock offered by this prospectus supplement, you will experience dilution to the extent of the difference between the offering price per share of common stock you pay in this offering and the adjusted net tangible book value per share of our common stock immediately after this offering.
Our historical net tangible book value as of April 30, 2021 was approximately $345.5 million, or approximately $1.07 per outstanding share of common stock. “Net tangible book value” is total assets, minus intangible assets, minus total liabilities. “Net tangible book value per share” is net tangible book value divided by the total number of shares outstanding, assuming conversion of all outstanding shares of our Series B Preferred Stock into common stock.
The shares in this offering will be sold at market prices which may fluctuate substantially. For purposes of calculating dilution, we have assumed a sale price of $10.06 per share, which was the closing price of our stock on The Nasdaq Global Market on June 10, 2021. However, since the shares may be sold at a variety of prices, these dilution numbers are merely an example of potential dilution based on an assumed sales price.
After giving effect to adjustments relating to the offering and assuming the sale of $500,000,000 of our common stock at an assumed offering price of $10.06 per share (the closing price of our common stock on The Nasdaq Global Market as of June 10, 2021), our adjusted net tangible book value on April 30, 2021 would have been approximately $835.3 million or $2.24 per share. The adjustments made to determine adjusted net tangible book value per share are the following:

An increase in total assets to reflect the net proceeds of the offering after deducting commissions and our estimated offering expenses; and

The addition of 49,701,789 shares offered by this prospectus supplement, assuming the offer and sale of $500,000,000 of our common stock (based on the closing price of our common stock on The Nasdaq Global Market on June 10, 2021), to the number of shares outstanding.
The following table illustrates the increase in net tangible book value of $1.17 per share to existing stockholders and the immediate dilution of $7.82 per share (the difference between the assumed offering price per share and the adjusted net tangible book value per share) to new investors:
Assumed public offering price per share
$ 10.06
Net tangible book value per share as of April 30, 2021
$ 1.07
Increase in net tangible book value per share attributable to the offering
$ 1.17
Adjusted net tangible book value per share as of April 30, 2021, after giving effect to the
offering
$ 2.24
Dilution per share to new investors in the offering
$ 7.82
The foregoing table is based on 322,530,641 shares outstanding as of April 30, 2021. This calculation is on an “as converted” basis assuming the conversion of all outstanding shares of our Series B Preferred Stock into 37,837 shares of common stock (refer to the “Description of Capital Stock” section of this prospectus supplement beginning on page S-6 for share amounts assumed in conversion of the Series B Preferred Stock to common stock). This number of shares excludes:

950,102 shares of our common stock reserved for issuance upon exercise of our outstanding warrants as of April 30, 2021, with an exercise price of $19.20 per share;

1,134,623 shares of our common stock reserved, as of April 30, 2021, for issuance upon time-based vesting of restricted stock units granted under our equity incentive plan;

2,865,028 shares of common stock reserved for potential issuance in connection with the settlement of performance-based restricted stock units under our equity incentive plan, with the issuance of such shares (and the number of shares to actually be issued) being contingent on achievement of certain stock price performance goals;
 
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22,388 shares of common stock reserved, as of April 30, 2021, for future issuance upon exercise of outstanding options to purchase common stock, with a weighted average exercise price of $78.21;

8,011,290 shares of our common stock reserved, as of April 30, 2021, for future grants of awards under our equity incentive plan; and

25,870 shares of our common stock reserved, as of April 30, 2021, for future issuance under our employee stock purchase plan.
To the extent that outstanding warrants or options are exercised, you will experience further dilution. In addition, we may choose to raise additional capital due to market conditions or strategic considerations, even if we believe that we have sufficient funds for our current or future operating plans. To the extent that additional capital is raised through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our stockholders.
 
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Plan of Distribution
We have entered into a sales agreement with Jefferies LLC and Barclays Capital Inc. (the “sales agents”), under which we may offer and sell up to $500,000,000 of our shares of common stock from time to time through the sales agents acting as agents or directly to the sales agents acting as principals. Sales of our shares of common stock, if any, under this prospectus supplement and the accompanying prospectus may be made by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act.
Each time we wish to issue and sell shares of common stock under the sales agreement, we will notify a sales agent of the number of shares to be issued, the dates on which such sales are anticipated to be made, any limitation on the number of shares to be sold in any one day and any minimum price below which sales may not be made. Once we have so instructed such sales agent, unless such sales agent declines to accept the terms of such notice, such sales agent has agreed to use its commercially reasonable efforts consistent with its normal trading and sales practices to sell such shares up to the amount specified on such terms. The obligations of the sales agents under the sales agreement to sell our shares of common stock are subject to a number of conditions that we must meet. We may sell our common stock through only one sales agent on any particular trading day.
The settlement of sales of shares between us and the sales agents is generally anticipated to occur on the second trading day following the date on which the sale was made. Sales of our shares of common stock as contemplated in this prospectus supplement will be settled through the facilities of The Depository Trust Company or by such other means as we and the sales agents may agree upon. There is no arrangement for funds to be received in an escrow, trust or similar arrangement.
We will pay each sales agent a commission equal to 2.0% of the gross proceeds from each sale of shares of our common stock made through or to such sales agent from time to time under the sales agreement. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time. In addition, we have agreed to reimburse the sales agents for the fees and disbursements of their counsel, payable upon execution of the sales agreement, in an amount not to exceed $50,000, in addition to certain ongoing disbursements of their legal counsel. We estimate that the total expenses for the offering, excluding any commissions or expense reimbursement payable to the sales agents under the terms of the sales agreement, will be approximately $255,000, which includes legal, accounting and printing costs and various other fees associated with registering the shares of common stock. The remaining sale proceeds, after deducting any other transaction fees, will equal our net proceeds from the sale of such shares.
The sales agents will provide written confirmation to us before the open of The Nasdaq Global Market on the day following each day on which our shares of common stock are sold under the sales agreement. Each confirmation will include the number of shares sold on that day, the aggregate gross proceeds of such sales and the proceeds to us.
In connection with the sale of our shares of common stock on our behalf, each sales agent will be deemed to be an “underwriter” within the meaning of the Securities Act, and the compensation of the sales agents will be deemed to be underwriting commissions or discounts. We have agreed to indemnify the sales agents against certain civil liabilities, including liabilities under the Securities Act. We have also agreed to contribute to payments the sales agents may be required to make in respect of such liabilities.
This offering of our shares of common stock pursuant to the sales agreement will terminate upon the earlier of (i) the sale of all shares of common stock subject to the sales agreement and (ii) the termination of the sales agreement as permitted therein. We and the sales agents may each terminate the sales agreement at any time upon ten trading days’ prior notice. The termination of the sales agreement by one sales agent shall not affect the rights and obligations of the other sales agent under the sales agreement.
This summary of the material provisions of the sales agreement does not purport to be a complete statement of its terms and conditions. A copy of the sales agreement is filed as an exhibit to a Current Report on Form 8-K filed under the Exchange Act, and incorporated by reference in this prospectus supplement.
The sales agents and their respective affiliates may in the future provide various investment banking, commercial banking, financial advisory and other financial services for us and our affiliates, for which services
 
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they may in the future receive customary fees. In the course of its business, the sales agents may actively trade our securities for its own account or for the accounts of customers, and, accordingly, the sales agents may at any time hold long or short positions in such securities.
Pursuant to an Open Market Sale Agreement, dated June 16, 2020, between us and Jefferies LLC, Jefferies LLC, in its capacity as sales agent, sold an aggregate of approximately $72,300,000 of our common stock between June 16, 2020 and October 31, 2020. That agreement was terminated in connection with this offering. Jefferies LLC received a commission equal to 3.0% of the gross proceeds of the sales made by it under that agreement.
A prospectus supplement and the accompanying prospectus in electronic format may be made available on a website maintained by Jefferies LLC and/or Barclays Capital Inc., and Jefferies LLC and/or Barclays Capital Inc. may distribute the prospectus supplement and the accompanying prospectus electronically.
Legal Matters
The validity of the shares of common stock being offered hereby will be passed upon for us by Foley & Lardner LLP, Boston, Massachusetts. Duane Morris LLP, New York, New York, is acting as counsel for Jefferies LLC and Barclays Capital Inc. in connection with various legal matters relating to the shares of common stock offered hereby.
Experts
The consolidated financial statements of FuelCell Energy, Inc. as of October 31, 2020 and 2019, and for each of the years in the three-year period ended October 31, 2020, have been incorporated by reference herein and in the registration statement in reliance upon the report of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.
The audit report covering the October 31, 2020 financial statements refers to changes in the Company’s methods of accounting for leases and revenue due to the adoption of new accounting guidance.
Where You Can Find Additional Information
We file annual, quarterly and current reports, proxy statements and other information with the SEC. We also filed a registration statement on Form S-3, including exhibits, under the Securities Act with respect to the shares of common stock offered by this prospectus supplement. The SEC maintains an Internet web site at http://www.sec.gov which contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC. Our SEC filings are also available to the public on the “Investors & Media” tab of our web site at the following Internet address: www.fuelcellenergy.com. The information on, or that can be accessed through, our web site is not incorporated by reference in this prospectus supplement or in the accompanying prospectus, and you should not consider it to be a part of this prospectus supplement or the accompanying prospectus. Our web site address is included as an inactive textual reference only.
This prospectus supplement and the accompanying prospectus are part of a registration statement that we have filed with the SEC relating to the securities to be offered. This prospectus supplement and the accompanying prospectus do not contain all of the information we have included in the registration statement and the accompanying exhibits and schedules in accordance with the rules and regulations of the SEC, and we refer you to the omitted information. The statements this prospectus supplement makes pertaining to the content of any contract, agreement or other document that is an exhibit to the registration statement necessarily are summaries of their material provisions and do not describe all provisions, exceptions and qualifications contained in those contracts, agreements or documents. You should read those contracts, agreements and documents for information that may be important to you. The registration statement, exhibits and schedules are available on the SEC’s Internet web site.
The SEC allows us to incorporate by reference much of the information we file with the SEC, which means that we can disclose important information to you by referring you to those publicly available documents. The information that we incorporate by reference in this prospectus supplement is considered to be part of this
 
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prospectus supplement. Because we are incorporating by reference future filings with the SEC, this prospectus supplement is continually updated and those future filings may modify or supersede some of the information included or incorporated in this prospectus supplement. This means that you must look at all of the SEC filings that we incorporate by reference to determine if any of the statements in this prospectus supplement or in any document previously incorporated by reference have been modified or superseded. This prospectus supplement incorporates 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 Exchange Act (in each case, other than those documents or the portions of those documents not deemed to be filed) prior to the completion or termination of the offering:



our Quarterly Reports on Form 10-Q for the quarterly periods ended January 31, 2021 and April 30, 2021, filed with the SEC on March 16, 2021 and June 10, 2021, respectively;

our Current Reports on Form 8-K filed with the SEC on November 27, 2020, December 1, 2020 (excluding Item 2.02), December 4, 2020 (excluding Item 7.01 and Exhibits 99.1, 99.2 and 99.3 of Item 9.01), December 9, 2020, December 21, 2020, January 20, 2021, February 10, 2021, February 11, 2021, April 8, 2021, as amended by the Form 8-K/A filed on April 14, 2021 (excluding, in each case, Item 7.01 and Exhibit 99.1 of Item 9.01), May 27, 2021 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), and June 8, 2021 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01); and

Notwithstanding the foregoing, information furnished under Items 2.02 and 7.01 of any Current Report on Form 8-K, including the related exhibits under Item 9.01, is not incorporated by reference in this prospectus supplement.
You may request a copy of any or all of these documents, which will be provided to you at no cost, by writing or telephoning us using the following contact information:
FuelCell Energy, Inc.
Attention: Corporate Secretary
3 Great Pasture Road
Danbury, Connecticut 06810
(203) 825-6000
We have not authorized anyone to provide you with any information other than that contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus and any related free writing prospectus that we authorized to be distributed to you or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. You should not assume that the information in this prospectus supplement or the accompanying prospectus is accurate as of any date other than the date on the front of those documents or that any document incorporated by reference is accurate as of any date other than its filing date. You should not consider this prospectus supplement or the accompanying prospectus to be an offer or solicitation relating to the securities in any jurisdiction in which such an offer or solicitation relating to the securities is not authorized. Furthermore, you should not consider this prospectus supplement or the accompanying prospectus to be an offer or solicitation relating to the securities if the person making the offer or solicitation is not qualified to do so, or if it is unlawful for you to receive such an offer or solicitation.
 
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PROSPECTUS
[MISSING IMAGE: LG_FUELCELLENERGY-4C.JPG]
Common Stock
This prospectus relates to shares of our common stock that we may sell from time to time in one or more offerings on terms to be determined at the time of sale. We will provide specific terms of the offering in supplements to this prospectus. This prospectus may be used to offer and sell our common stock for the account of persons other than us as provided in an applicable prospectus supplement or post-effective amendment or in documents incorporated by reference into this prospectus that we file with the Securities and Exchange Commission. You should read this prospectus and any prospectus supplement carefully before you invest.
Shares of our common stock may be sold directly by us, through dealers or agents designated from time to time, to or through underwriters or through a combination of these methods. See “Plan of Distribution” in this prospectus for more information. We may also describe the plan of distribution for any particular offering of shares of our common stock in any applicable prospectus supplement. If any agents, underwriters or dealers are involved in the sale of any shares of our common stock in respect of which this prospectus is being delivered, we will disclose their names and the nature of our arrangements with them in a prospectus supplement. The net proceeds we expect to receive from any such sale will also be included in a prospectus supplement. No shares of our common stock may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such shares of our common stock.
Our common stock is listed on the Nasdaq Global Market under the symbol “FCEL.”
Investing in our common stock involves a high degree of risk. See “Risk Factors” on page 3 of this prospectus and any other risk factors included in any accompanying prospectus supplement and in the documents incorporated by reference in this prospectus for a discussion of the factors you should carefully consider before deciding to purchase our common stock.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.
This prospectus may not be used to consummate sales of our common stock unless, to the extent required by applicable law, it is accompanied by a prospectus supplement.
The date of this prospectus is December 1, 2020.

 
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Neither we nor the underwriters (if any) have authorized anyone to provide you with any information other than that contained in or incorporated by reference into this prospectus or any amendment or supplement to this prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We and the underwriters (if any) take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. This prospectus and any accompanying prospectus supplement do not constitute an offer to sell or the solicitation of an offer to buy any securities other than the securities described in any applicable prospectus supplement or an offer to sell or the solicitation of an offer to buy such securities in any circumstances in which such offer or solicitation is unlawful. You should assume that the information in this prospectus, any applicable prospectus supplement or any related free writing prospectus is accurate only as of the date on the front of the document and that any information we have incorporated by reference is accurate only as of the date of the document incorporated by reference, regardless of the time of delivery of this prospectus, any applicable prospectus supplement or any related free writing prospectus, or any sale of a security. Our business, financial condition, results of operations and prospects may have changed materially since those dates.
 
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ABOUT THIS PROSPECTUS
This prospectus is part of a registration statement that FuelCell Energy, Inc. (“FuelCell Energy,” the “Company,” “we,” “our,” “us” or similar terms) filed with the Securities and Exchange Commission (the “SEC”) using a “shelf” registration process. Under this shelf registration process, we may from time to time sell shares of our common stock in one or more offerings. Each time we sell securities, we will, to the extent required by law, provide a prospectus supplement that will contain specific information about the terms of the offering. We may also add, update or change in any accompanying prospectus supplement any of the information contained in this prospectus. To the extent there is a conflict between the information contained in this prospectus and the prospectus supplement, you should rely on the information in the prospectus supplement, provided that if any statement in one of these documents is inconsistent with a statement in another document having a later date — for example, a document incorporated by reference in this prospectus or any prospectus supplement — the statement in the document having the later date modifies or supersedes the earlier statement. This prospectus, together with any accompanying prospectus supplement and any other document we may authorize to be delivered to you, includes all material information relating to the offering of our common stock.
As permitted by the rules and regulations of the SEC, the registration statement, of which this prospectus forms a part, includes additional information not contained in this prospectus. You may read the registration statement and the other reports we file with the SEC at the SEC’s web site or at the SEC’s offices as described below under the heading “Where You Can Find Additional Information.”
FORWARD-LOOKING STATEMENTS
This prospectus, any prospectus supplement, the documents incorporated by reference herein and therein and any related free writing prospectuses issued by us may contain forward-looking statements (within the meaning of the Private Securities Litigation Reform Act of 1995 (the “PSLRA”)) about our financial condition, results of operations, plans, objectives, expectations, future performance and business. Statements preceded by, followed by or that include words such as “expects,” “anticipates,” “estimates,” “goals,” “projects,” “intends,” “plans,” “believes,” “predicts,” “should,” “seeks,” “will,” “could,” “would,” “may,” “forecast,” or words or phrases of similar import are intended to identify some of the forward-looking statements and are included, along with this statement, for purposes of complying with the safe harbor provisions of the PSLRA. Forward-looking statements are neither historical facts, nor assurances of future performance. Instead, such statements are based only on our beliefs, expectations and assumptions regarding the future. As such, the realization of matters expressed in forward-looking statements involves inherent risks and uncertainties. Our actual results and future events may differ materially from those set forth in or contemplated by the forward-looking statements due to, among other factors, the risks and uncertainties described in or incorporated by reference into this prospectus, including under the heading “Risk Factors,” as well as any risks or uncertainties described in or incorporated by reference into any prospectus supplement. Any forward-looking statement contained in this prospectus, any prospectus supplement, the documents incorporated by reference herein and therein, and any related free writing prospectuses issued by us speaks only as of the date on which the statement was made, and we undertake no obligation to update publicly or revise any forward-looking statements for any reason, whether as a result of new information, future events or otherwise. New risks emerge from time to time, and we cannot predict all of the risks that may impact our business or the extent to which any particular risk, or combination of risks, may cause actual results to differ materially from those contained in any forward-looking statement.
Market data and industry forecasts and projections used in this prospectus and documents incorporated by reference herein have been obtained from independent industry sources. Forecasts, projections and other forward-looking information obtained from such sources are subject to similar qualifications and uncertainties as other forward-looking statements in this prospectus and documents incorporated by reference herein.
INCORPORATION BY REFERENCE
The SEC allows us to “incorporate by reference” the information that we file with it, which means that we can disclose important information to you by referring you to other documents. The information
 
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incorporated by reference is an important part of this prospectus. We incorporate by reference the following documents (other than information furnished rather than filed):

our Annual Report on Form 10-K for the fiscal year ended October 31, 2019 filed with the SEC on January 22, 2020, including the information specifically incorporated by reference into the Annual Report on Form 10-K from our definitive proxy statement for the 2020 Annual Meeting of Stockholders;

our Quarterly Reports on Form 10-Q for the quarterly periods ended January 31, 2020, April 30, 2020, and July 31, 2020, filed with the SEC on March 16, 2020, June 12, 2020, and September 10, 2020, respectively;

our Current Reports on Form 8-K filed with the SEC on November 6, 2019 (excluding Item 7.01 and Exhibits 99.1, 99.2 and 99.3 of Item 9.01), November 25, 2019, December 12, 2019, December 20, 2019 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), January 13, 2020, February 13, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), February 21, 2020, March 20, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), April 7, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), April 9, 2020, April 24, 2020 (excluding Item 7.01), May 4, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), May 12, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), May 15, 2020, June 11, 2020, June 16, 2020, June 22, 2020 (excluding Item 7.01 and Exhibit 99.1 of Item 9.01), June 29, 2020, August 24, 2020, October 2, 2020 (excluding Item 7.01 and Exhibits 99.1, 99.2 and 99.3 of Item 9.01), October 8, 2020, and November 27, 2020; and

Notwithstanding the foregoing, information furnished under Items 2.02 and 7.01 of any Current Report on Form 8-K, including the related exhibits under Item 9.01, is not incorporated by reference in this prospectus.
All reports and other documents we subsequently file pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act (other than information furnished rather than filed), will also be incorporated by reference into this prospectus and deemed to be part of this prospectus from the date of the filing of such reports and documents.
We will provide without charge, upon written or oral request, a copy of any or all of the documents that are incorporated by reference into this prospectus and a copy of any or all other contracts or documents which are referred to in this prospectus. You may request a copy of any or all of these documents, which will be provided to you at no cost, by writing or telephoning us using the following contact information:
FuelCell Energy, Inc.
Attention: Corporate Secretary
3 Great Pasture Road
Danbury, Connecticut 06810
Telephone: (203) 825-6000
Our SEC filings are also available to the public on the “Investors & Media” tab of our web site at the following Internet address: www.fuelcellenergy.com. The information on, or that can be accessed through, our web site is not incorporated by reference in this prospectus, and you should not consider it to be a part of this prospectus. Our web site address is included as an inactive textual reference only.
 
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OUR COMPANY
FuelCell Energy, Inc.
FuelCell Energy, Inc. is a global leader in sustainable clean energy technologies that address some of the world’s most critical challenges around energy, safety and global urbanization. As a leading global manufacturer of proprietary fuel cell technology platforms, we are uniquely positioned to serve customers worldwide with sustainable products and solutions for businesses, utilities, governments and municipalities. Our solutions are designed to enable a world empowered by clean energy, enhancing the quality of life for people around the globe. We target large-scale power users with our megawatt-class installations globally, and currently offer sub-megawatt solutions for smaller power consumers in Europe. To provide a frame of reference, one megawatt is adequate to continually power approximately 1,000 average sized U.S. homes. Our customer base includes utility companies, municipalities, universities, hospitals, government entities/military bases and a variety of industrial and commercial enterprises. Our leading geographic markets are currently the United States and South Korea, and we are pursuing opportunities in other countries around the world.
FuelCell Energy, based in Connecticut, was founded in 1969 as a New York corporation to provide applied research and development services on a contract basis. We completed our initial public offering in 1992 and reincorporated in Delaware in 1999. We began selling stationary fuel cell power plants commercially in 2003.
Our business model is based on multiple revenue streams, including power platform and component sales; recurring service revenue, mainly through long-term service agreements; recurring electricity, capacity and renewable attribute sales under power purchase agreements (“PPAs”) and tariffs for projects we retain in our generation portfolio; and revenue from public and private industry research contracts under Advanced Technologies.
We are a complete solutions provider, controlling the design, manufacturing, sales, installation, operations and maintenance of our patented fuel cell technology under long-term power purchase and service agreements. When principally utilizing long-term PPAs, the end-user of the power or utility hosts the installation and only pays for power as it is delivered, avoiding up-front capital investment. We also develop projects and sell equipment directly to customers, providing a complete solution of engineering, installing and servicing the fuel cell power plant under an engineering, procurement and construction agreement and a long-term maintenance and service agreement. FuelCell Energy maintains the long-term recurring service obligation and associated revenues running conterminous with the life of the project.
Corporate Information
Our principal executive offices are located at 3 Great Pasture Road, Danbury, Connecticut 06810. Our telephone number is (203) 825-6000. We maintain a web site at the following Internet address: www.fuelcellenergy.com. The information on, or that can be accessed through, our web site is not incorporated by reference in this prospectus, and you should not consider it to be a part of this prospectus. Our web site address is included as an inactive textual reference only.
In this prospectus, unless otherwise stated or the context otherwise requires, references to “FuelCell Energy,” the “Company,” “we,” “us” and “our” and similar references refer to FuelCell Energy, Inc. and our consolidated subsidiaries.
RISK FACTORS
An investment in our common stock involves a high degree of risk. You should carefully consider the risk factors incorporated herein by reference to our most recent Annual Report on Form 10-K and the other information contained in this prospectus, as updated by our Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and subsequent filings under the Exchange Act and the risk factors and other information contained in the applicable prospectus supplement before acquiring any of our securities.
 
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USE OF PROCEEDS
Unless otherwise provided in the applicable prospectus supplement, we currently intend to use the net proceeds from our sale of common stock under this prospectus for general corporate purposes, which may include future investments in businesses, products, services and/or technologies, including strategic growth opportunities, the repayment, redemption or refinancing of indebtedness, research with respect to and the development of our products, working capital, capital expenditures, and acquisitions and repurchases of our securities. We may set forth additional information on the use of proceeds from the sale of the common stock we offer under this prospectus in a prospectus supplement relating to the specific offering. We have not determined the amount of net proceeds to be used specifically for the foregoing purposes. As a result, our management will have broad discretion in the allocation of the net proceeds.
We will not receive proceeds from any sales of securities by the account of persons other than us.
DESCRIPTION OF CAPITAL STOCK
General
The following description of our capital stock is a summary and does not purport to be complete. It is subject to, and qualified in its entirety by reference to, our Certificate of Incorporation, as amended (the “Certificate of Incorporation”), and our Amended and Restated By-laws (the “By-laws”), each of which is incorporated by reference as an exhibit to the registration statement of which this prospectus is a part. We encourage you to read our Certificate of Incorporation, our By-laws and the applicable provisions of the Delaware General Corporation Law (“DGCL”) for additional information.
Authorized and Outstanding Capital Stock
Under our Certificate of Incorporation, we are authorized to issue 337,500,000 shares of common stock, par value $0.0001 per share, and 250,000 shares of preferred stock, par value $0.01 per share, in one or more series designated by our board of directors, of which 105,875 shares of our preferred stock have been designated as 5% Series B Cumulative Convertible Perpetual Preferred Stock (“Series B Preferred Stock”). Pursuant to our Certificate of Incorporation, our undesignated shares of preferred stock include all of our shares of preferred stock that were previously designated as Series C Convertible Preferred Stock and Series D Convertible Preferred Stock, as all such shares have been retired and therefore have the status of authorized and unissued shares of preferred stock undesignated as to series.
As of November 27, 2020, 294,706,758 shares of our common stock were issued and outstanding and 64,020 shares of our Series B Preferred Stock were issued and outstanding. No other shares of our preferred stock were issued and outstanding.
As of November 27, 2020, we were obligated, if and when the holders exercise their conversion rights, to issue approximately 37,837 shares of our common stock upon conversion of all of the issued and outstanding Series B Preferred Stock.
As of November 27, 2020, there were outstanding options to purchase 23,891 shares of our common stock under our equity incentive plans, 1,195,398 shares of our common stock were reserved for issuance upon time-based vesting of outstanding restricted stock units (“RSUs”) granted under our equity incentive plans, 2,938,564 shares of our common stock were reserved for potential issuance in connection with the settlement of performance-based RSUs under our equity incentive plans, and 30,248 shares of our common stock were reserved for future issuance under our employee stock purchase plan.
As of November 27, 2020, there were outstanding warrants to purchase up to 2,700,000 shares of our common stock held by Orion Energy Credit Opportunities Fund II, L.P., Orion Energy Credit Opportunities Fund II GPFA, L.P., Orion Energy Credit Opportunities Fund II PV, L.P., and Orion Energy Credit Opportunities FuelCell Co-Invest, L.P. These warrants were issued pursuant to our senior secured credit facility with Orion Energy Partners Investment Agent, LLC, as administrative agent and collateral agent, and these affiliated lenders. The exercise price of these warrants is $0.242 per share, and the expiration date of such warrants is November 22, 2028.
 
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As of November 27, 2020, there were also other outstanding warrants (Series C Warrants to Purchase Common Stock, dated May 3, 2017) to purchase up to 964,114 shares of our common stock. The exercise price of these warrants is $19.20, and the expiration date of such warrants is May 2, 2022.
As of November 27, 2020, there were 109 holders of record of our common stock.
Common Stock
Voting Rights.   The holders of our common stock have one vote per share. Holders of our common stock are not entitled to vote cumulatively for the election of directors. Generally, all matters to be voted on by stockholders (including the election of directors in uncontested elections) must be approved by a majority of the votes properly cast on the matter at a meeting at which a quorum is present, subject to any voting rights granted to holders of any then-outstanding preferred stock. (The voting rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”). A plurality voting standard applies in contested director elections (i.e., when the number of nominees for election as directors exceeds the number of directors to be elected at such meeting).
Dividends.   Holders of our common stock will share ratably in any dividends declared by our board of directors, subject to the preferential rights of any of our preferred stock then outstanding. (The dividend rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”). Dividends consisting of shares of our common stock may be paid to holders of shares of our common stock. We have never paid a cash dividend on our common stock and do not anticipate paying any cash dividends on our common stock in the foreseeable future.
Liquidation Rights.   In the event of our liquidation, dissolution or winding up, after payment of liabilities and liquidation preferences on any of our preferred stock then outstanding, the holders of shares of our common stock are entitled to share ratably in all assets available for distribution. (The liquidation and other rights of the outstanding Series B Preferred Stock are described below under the heading “Series B Preferred Stock”).
Other Rights.   Holders of shares of our common stock (solely in their capacity as holders of shares of our common stock) have no preemptive rights or rights to convert their shares of our common stock into any other securities. There are no redemption or sinking fund provisions applicable to our common stock.
Listing on The Nasdaq Global Market.   Our common stock is listed on The Nasdaq Global Market under the symbol “FCEL.”
Transfer Agent and Registrar.   The transfer agent and registrar for our common stock is American Stock Transfer & Trust Company, New York.
Series B Preferred Stock
Ranking.   Shares of our Series B Preferred Stock rank with respect to dividend rights and rights upon our liquidation, winding up or dissolution:

senior to shares of our common stock;

junior to our debt obligations; and

effectively junior to our subsidiaries’ (i) existing and future liabilities and (ii) capital stock held by others.
Dividends.   The Series B Preferred Stock pays cumulative annual dividends of $50.00 per share, which are payable quarterly in arrears on February 15, May 15, August 15 and November 15. Dividends accumulate and are cumulative from the date of original issuance. Unpaid accumulated dividends do not bear interest.
The dividend rate is subject to upward adjustment as set forth in the Amended Certificate of Designation for the Series B Preferred Stock (the “Series B Certificate of Designation”) if we fail to pay, or to set apart funds to pay, any quarterly dividend on the Series B Preferred Stock. The dividend rate is also subject to upward adjustment as set forth in the Registration Rights Agreement entered into with the initial purchasers of the Series B Preferred Stock (the “Registration Rights Agreement”) if we fail to satisfy our
 
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registration obligations with respect to the Series B Preferred Stock (or the underlying shares of common stock) under the Registration Rights Agreement.
No dividends or other distributions may be paid or set apart for payment on our common stock (other than a dividend payable solely in shares of a like or junior ranking), nor may any stock junior to or on parity with the Series B Preferred Stock be redeemed, purchased or otherwise acquired for any consideration (or any money paid to or made available for a sinking fund for such stock) by us or on our behalf  (except by conversion into or exchange for shares of a like or junior ranking), unless all accumulated and unpaid dividends on the Series B Preferred Stock have been paid or funds or shares of common stock have been set aside for payment of such accumulated and unpaid dividends.
The dividend on the Series B Preferred Stock may be paid in cash or, at the option of the holder, in shares of our common stock, which will be registered pursuant to a registration statement to allow for the immediate sale of these shares of common stock into the public market.
Liquidation.   The holders of Series B Preferred Stock are entitled to receive, in the event that the Company is liquidated, dissolved or wound up, whether voluntarily or involuntarily, $1,000.00 per share plus all accumulated and unpaid dividends up to but excluding the date of such liquidation, dissolution, or winding up (the “Liquidation Preference”). Until the holders of Series B Preferred Stock receive the Liquidation Preference with respect to their shares of Series B Preferred Stock in full, no payment will be made on any junior shares, including shares of our common stock. After the Liquidation Preference is paid in full, holders of the Series B Preferred Stock will not be entitled to receive any further distribution of our assets. As of July 31, 2020 and October 31, 2020, the issued and outstanding shares of Series B Preferred Stock had an aggregate Liquidation Preference of $64.0 million.
Conversion Rights.   Each share of Series B Preferred Stock may be converted at any time, at the option of the holder, into 0.591 shares of our common stock (which is equivalent to an initial conversion price of $1,692.00 per share) plus cash in lieu of fractional shares. The conversion rate is subject to adjustment upon the occurrence of certain events, as described in the Series B Certificate of Designation. The conversion rate is not adjusted for accumulated and unpaid dividends. If converted, holders of Series B Preferred Stock do not receive a cash payment for all accumulated and unpaid dividends; rather, all accumulated and unpaid dividends are canceled.
We may, at our option, cause shares of Series B Preferred Stock to be automatically converted into that number of shares of our common stock that are issuable at the then-prevailing conversion rate. We may exercise our conversion right only if the closing price of our common stock exceeds 150% of the then-prevailing conversion price ($1,692.00 per share as of July 31, 2020 and October 31, 2020) for 20 trading days during any consecutive 30 trading day period, as described in the Series B Certificate of Designation.
If the holders of Series B Preferred Stock elect to convert their shares in connection with certain “fundamental changes” ​(as defined in the Series B Certificate of Designation and described below), we will in certain circumstances increase the conversion rate by a number of additional shares of common stock upon conversion or, in lieu thereof, we may in certain circumstances elect to adjust the conversion rate and related conversion obligation so that shares of Series B Preferred Stock are converted into shares of the acquiring or surviving company, in each case as described in the Series B Certificate of Designation.
The adjustment of the conversion price is to prevent dilution of the interests of the holders of the Series B Preferred Stock from certain dilutive transactions with holders of our common stock.
Redemption.   We do not have the option to redeem the Series B Preferred Stock. However, holders of the Series B Preferred Stock can require us to redeem all or a portion of their shares of Series B Preferred Stock at a redemption price equal to the Liquidation Preference of the shares to be redeemed in the case of a “fundamental change” ​(as further described in the Series B Certificate of Designation). A fundamental change will be deemed to have occurred if any of the following occurs:

any “person” or “group” is or becomes the beneficial owner, directly or indirectly, of 50% or more of the total voting power of all classes of our capital stock then outstanding and normally entitled to vote in the election of directors;
 
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during any period of two consecutive years, individuals who at the beginning of such period constituted the board of directors of the Company (together with any new directors whose election to our board of directors or whose nomination for election by the stockholders was approved by a vote of 6623% of our directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the directors of the Company then in office;

the termination of trading of our common stock on The Nasdaq Stock Market and our common stock is not approved for trading or quoted on any other U.S. securities exchange or established over-the-counter trading market in the U.S.; or

we (i) consolidate with or merge with or into another person or another person merges with or into our Company or (ii) sell , assign, transfer, lease, convey or otherwise dispose of all or substantially all of the assets of the Company and certain of its subsidiaries, taken as a whole, to another person and, in the case of any such merger or consolidation described in clause (i), the securities that are outstanding immediately prior to such transaction (and which represent 100% of the aggregate voting power of our voting stock) are changed into or exchanged for cash, securities or property, unless pursuant to the transaction such securities are changed into or exchanged for securities of the surviving person that represent, immediately after such transaction, at least a majority of the aggregate voting power of the voting stock of the surviving person.
Notwithstanding the foregoing, holders of shares of the Series B Preferred Stock will not have the right to require us to redeem their shares if:

the last reported sale price of shares of our common stock for any five trading days within the 10 consecutive trading days ending immediately before the later of the fundamental change or its announcement equaled or exceeded 105% of the conversion price of the Series B Preferred Stock immediately before the fundamental change or announcement;

at least 90% of the consideration (excluding cash payments for fractional shares and in respect of dissenters’ appraisal rights) in the transaction or transactions constituting the fundamental change consists of shares of capital stock traded on a U.S. national securities exchange or quoted on The Nasdaq Stock Market, or which will be so traded or quoted when issued or exchanged in connection with a fundamental change, and as a result of the transaction or transactions, shares of Series B Preferred Stock become convertible into such publicly traded securities; or

in the case of a merger or consolidation constituting a fundamental change (as described in the fourth bullet above), the transaction is affected solely to change our jurisdiction of incorporation.
Moreover, we will not be required to redeem any Series B Preferred Stock upon the occurrence of a fundamental change if a third party makes an offer to purchase the Series B Preferred Stock in the manner, at the price, at the times and otherwise in compliance with the requirements set forth above and such third party purchases all shares of Series B Preferred Stock validly tendered and not withdrawn.
We may, at our option, elect to pay the redemption price in cash, in shares of our common stock valued at a discount of 5% from the market price of shares of our common stock, or in any combination thereof. Notwithstanding the foregoing, we may only pay such redemption price in shares of our common stock that are registered under the Securities Act of 1933, as amended (the “Securities Act”), and which are eligible for immediate sale in the public market by non-affiliates of our Company.
Voting Rights.   Holders of Series B Preferred Stock currently have no voting rights; however, holders may receive certain voting rights, as described in the Series B Certificate of Designation, if (a) dividends on any shares of Series B Preferred Stock, or any other class or series of stock ranking on parity with the Series B Preferred Stock with respect to the payment of dividends, shall be in arrears for dividend periods, whether or not consecutive, containing in the aggregate a number of days equivalent to six calendar quarters or (b) we fail to pay the redemption price, plus accrued and unpaid dividends, if any, on the redemption date for shares of Series B Preferred Stock following a fundamental change. In each such event, the holders of Series B Preferred Stock (voting separately as a class with all other classes or series of stock ranking on parity with the Series B Preferred Stock with respect to the payment of dividends and upon which like
 
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voting rights have been conferred and are exercisable) will be entitled to elect two directors to the Company’s board of directors in addition to those directors already serving on the Company’s board of directors at such time (the “Series B Directors”), at the next annual meeting of the Company’s stockholders (or at a special meeting of the Company’s stockholders called for such purpose, whichever is earlier). The right to elect the Series B Directors will continue for each subsequent annual meeting of the Company’s stockholders until all dividends accumulated on the shares of Series B Preferred Stock have been fully paid or set aside for payment or the Company pays in full or sets aside for payment such redemption price, plus accrued but unpaid dividends, if any, on the redemption date for the shares of Series B Preferred Stock following a fundamental change. The term of office of any Series B Directors will terminate immediately upon the termination of the right of holders of Series B Preferred Stock to elect such Series B Directors, as described in this paragraph. Each holder of Series B Preferred Stock will have one vote for each share of Series B Preferred Stock held in the election of Series B Directors. We previously failed to make timely payment of the accrued dividends on the Series B Preferred Stock with respect to the May 15, 2019 and August 15, 2019 dividend payment dates. Such amounts were fully paid on or about November 15, 2019.
So long as any shares of Series B Preferred Stock remain outstanding, we will not, without the consent of the holders of at least two-thirds of the shares of Series B Preferred Stock outstanding at the time (voting separately as a class with all other series of preferred stock, if any, on parity with our Series B Preferred Stock upon which like voting rights have been conferred and are exercisable) issue or increase the authorized amount of any class or series of shares ranking senior to the outstanding shares of the Series B Preferred Stock as to dividends or upon liquidation. In addition, we will not, subject to certain conditions, amend, alter or repeal provisions of our Certificate of Incorporation, including the Series B Certificate of Designation, whether by merger, consolidation or otherwise, so as to adversely amend, alter or affect any power, preference or special right of the outstanding shares of Series B Preferred Stock or the holders thereof without the affirmative vote of not less than two-thirds of the issued and outstanding shares of Series B Preferred Stock.
 
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CERTAIN PROVISIONS OF DELAWARE LAW, OUR CERTIFICATE OF INCORPORATION,
AND BY-LAWS
The following description of certain provisions of Delaware law is only a summary. For a complete description, we refer you to the DGCL and to our Certificate of Incorporation and our By-laws, the forms of which are filed as exhibits to the registration statement of which this prospectus forms a part.
Anti-Takeover Provisions
Provisions of our Certificate of Incorporation and By-laws.   A number of provisions of our Certificate of Incorporation and By-laws concern matters of corporate governance and the rights of stockholders. Some of these provisions, including, but not limited to, the inability of stockholders to take action by unanimous written consent, certain advance notice requirements for stockholder proposals and director nominations, supermajority voting provisions with respect to any amendment of voting rights provisions, the filling of vacancies on the board of directors by the affirmative vote of a majority of the remaining directors, and the ability of the board of directors to issue shares of preferred stock and to set the voting rights, preferences and other terms thereof without further stockholder action, may be deemed to have an anti-takeover effect and may discourage takeover attempts not first approved by the board of directors, including takeovers which stockholders may deem to be in their best interests. If takeover attempts are discouraged, temporary fluctuations in the market price of shares of our common stock, which may result from actual or rumored takeover attempts, may be inhibited. These provisions, together with the ability of the board of directors to issue preferred stock without further stockholder action, could also delay or frustrate the removal of incumbent directors or the assumption of control by our stockholders, even if the removal or assumption would be beneficial to our stockholders. These provisions could also discourage or inhibit a merger, tender offer or proxy contest, even if favorable to the interests of stockholders, and could depress the market price of our common stock. The board of directors believes these provisions are appropriate to protect our interests and the interests of our stockholders. The board of directors has no present plans to adopt any further measures or devices which may be deemed to have an “anti-takeover effect.”
Delaware Anti-Takeover Provisions.   We are subject to Section 203 of the DGCL, which prohibits a publicly-held Delaware corporation from engaging in a “business combination,” except under certain circumstances, with an “interested stockholder” for a period of three years following the date such person became an “interested stockholder” unless:

before such person became an interested stockholder, the board of directors of the corporation approved either the business combination or the transaction that resulted in the interested stockholder becoming an interested stockholder;

upon the consummation of the transaction that resulted in the interested stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding shares held by directors who are also officers of the corporation and shares held by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

at or following the time such person became an interested stockholder, the business combination is approved by the board of directors of the corporation and authorized at an annual or special meeting of stockholders (and not by written consent) by the affirmative vote of the holders of at least 6623% of the outstanding voting stock of the corporation which is not owned by the interested stockholder.
The term “interested stockholder” generally is defined as a person who, together with affiliates and associates, owns, or, within the three years prior to the determination of interested stockholder status, owned, 15% or more of a corporation’s outstanding voting stock. The term “business combination” includes mergers, asset or stock sales and other similar transactions resulting in a financial benefit to an interested stockholder. Section 203 makes it more difficult for an “interested stockholder” to effect various business combinations with a corporation for a three-year period. The existence of this provision would be expected to have an anti-takeover effect with respect to transactions not approved in advance by the board of directors, including discouraging attempts that might result in a premium over the market price for the shares of
 
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our common stock held by stockholders. A Delaware corporation may “opt out” of Section 203 with an express provision in its original certificate of incorporation or any amendment thereto. Our Certificate of Incorporation does not contain any such exclusion.
Exclusive Forum
Our By-laws provide that unless we consent in writing to an alternative forum, a state court located within the State of Delaware (or, if no state court located within the State of Delaware has jurisdiction, the federal district court for the District of Delaware) will be the sole and exclusive forum for: (i) any derivative action or proceeding brought on behalf of the Company; (ii) any action asserting a claim of breach of a fiduciary duty owed by any of the Company’s directors or officers or other employees to the Company or our stockholders; (iii) any action asserting a claim against the Company or any of our directors or officers or other employees arising pursuant to any provision of the DGCL or our Certificate of Incorporation or our By-laws (as either may be amended from time to time); or (iv) any action asserting a claim against the Company or any of our directors or officers or other employees which claim is governed by the internal affairs doctrine.
Limitations of Directors’ Liability
Our Certificate of Incorporation provides that none of our directors will be personally liable to the Company or our stockholders for monetary damages for breach of fiduciary duty as a director, except for liability:

for any breach of the director’s duty of loyalty to the Company or our stockholders;

for acts of omissions not in good faith or which involve intentional misconduct or a knowing violation of law;

under Section 174 of the DGCL; or

for any transaction from which the director derived an improper personal benefit.
The effect of these provisions is to eliminate our rights and the rights of our stockholders (through stockholders’ derivatives suits on behalf of us) to recover monetary damages against a director for breach of fiduciary duty as a director (including breaches resulting from grossly negligent behavior), except in the situations described above. These provisions do not limit the liability of directors under federal securities laws and do not affect the availability of equitable remedies such as an injunction or rescission based upon a director’s breach of his duty of care.
Disclosure of Commission Position on Indemnification for Securities Act Liabilities
Our Certificate of Incorporation provides that none of our directors will be personally liable to the Company or our stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent described above. Our By-laws provide for indemnification of our officers and directors to the fullest extent permitted by applicable law. Insofar as indemnification for liabilities under the Securities Act may be permitted to directors, officers or controlling persons of the Company pursuant to our Certificate of Incorporation, our By-laws, applicable law, or otherwise, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.
SELLING SECURITY HOLDERS
Information about selling security holders, where applicable, will be set forth in a prospectus supplement, in a post-effective amendment, or in filings we make with the SEC under the Exchange Act which are incorporated by reference.
 
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PLAN OF DISTRIBUTION
The shares of our common stock may be sold:

to or through underwriting syndicates represented by managing underwriters;

through one or more underwriters without a syndicate for them to offer and sell to the public;

through dealers or agents;

in “at the market offerings” to or through a market maker or into an existing trading market, or a securities exchange or otherwise; or

to investors directly in negotiated sales or in competitively bid transactions.
We will describe the plan of distribution for any particular offering of our common stock in the accompanying prospectus supplement, in accordance with applicable law. The prospectus supplement will set forth the terms of the offering of our common stock, including the following:

the name or names of any underwriters;

the purchase price, the proceeds from that sale and the expected use of such proceeds;

any options under which underwriters may purchase additional shares from us or from a selling stockholder participating in such offering;

any underwriting discounts and other items constituting underwriters’ compensation;

any initial public offering price and any discounts or concessions allowed or reallowed or paid to dealers; and

any securities exchanges on which the securities may be listed.
Underwriters
If underwriters are used in the sale, we will execute an underwriting agreement with the underwriters relating to the shares of our common stock that we will offer. Unless otherwise set forth in the prospectus supplement, the obligations of the underwriters to purchase these shares will be subject to conditions. The underwriters will be obligated to purchase all of the offered securities if any are purchased.
The shares of our common stock subject to the underwriting agreement will be acquired by the underwriters for their own account and may be resold by them from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. Underwriters may be deemed to have received compensation from us in the form of underwriting discounts or commissions and may also receive commissions from the purchasers of these shares for whom they may act as agent. Underwriters may sell these shares to or through dealers. These dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions from the purchasers for whom they may act as agent. Any initial public offering price and any discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time.
We also may sell the shares of our common stock in connection with a remarketing upon their purchase, in connection with a redemption or repayment, by a remarketing firm acting as principal for its own account or as our agent. Remarketing firms may be deemed to be underwriters in connection with the shares that they remarket.
We may authorize underwriters to solicit offers by institutions to purchase the shares of our common stock subject to the underwriting agreement from us, at the public offering price stated in the prospectus supplement under delayed delivery contracts providing for payment and delivery on a specified date in the future. If we sell shares of our common stock under these delayed delivery contracts, the prospectus supplement will state that as well as the conditions to which these delayed delivery contracts will be subject and the commissions payable for that solicitation.
Agents
We may also sell any of the shares of our common stock through agents designated by us from time to time. We will name any agent involved in the offer or sale of these shares and will list commissions payable
 
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by us to any such agents in the prospectus supplement. These agents will be acting on a best efforts basis to solicit purchases for the period of their appointment, unless we state otherwise in the prospectus supplement.
Direct Sales
We may sell any of the shares of our common stock directly to purchasers. In this case, we will not engage underwriters or agents in the offer and sale of these shares.
Indemnification
We may indemnify underwriters, dealers or agents who participate in the distribution of shares of our common stock against certain liabilities, including liabilities under the Securities Act and agree to contribute to payments which these underwriters, dealers or agents may be required to make.
LEGAL MATTERS
The validity of the shares of our common stock covered by this prospectus will be passed upon for us by Foley & Lardner LLP, Boston, Massachusetts.
EXPERTS
The consolidated financial statements of FuelCell Energy, Inc. as of October 31, 2019 and 2018, and for each of the years in the three-year period ended October 31, 2019, have been incorporated by reference herein and in the registration statement in reliance upon the report of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.
The audit report covering the October 31, 2019 financial statements refers to a change in the Company’s method of accounting for revenue due to the adoption of new accounting guidance.
WHERE YOU CAN FIND ADDITIONAL INFORMATION
We file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains an Internet site at http://www.sec.gov which contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC. Our SEC filings are available to the public from the SEC’s Internet site.
This prospectus is part of a registration statement that we have filed with the SEC relating to the securities to be offered. This prospectus does not contain all of the information we have included in the registration statement and the accompanying exhibits and schedules in accordance with the rules and regulations of the SEC, and we refer you to the omitted information. The statements this prospectus makes pertaining to the content of any contract, agreement or other document that is an exhibit to the registration statement necessarily are summaries of their material provisions and do not describe all provisions, exceptions and qualifications contained in those contracts, agreements or documents. You should read those contracts, agreements or documents for information that may be important to you. The registration statement, exhibits and schedules are available at the SEC’s Public Reference Room or through its Internet site.
Neither we nor the underwriters (if any) have authorized anyone to provide you with any information other than that contained in or incorporated by reference into this prospectus or any amendment or supplement to this prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We and the underwriters (if any) take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. You should not assume that the information in this prospectus or any prospectus supplement is accurate as of any date other than the date on the front of those documents or that any document incorporated by reference is accurate as of any date other than its filing date. You should not consider this prospectus to be an offer or solicitation relating to the securities in any jurisdiction in which such an offer or solicitation relating to the securities is not authorized. Furthermore, you should not consider this prospectus to be an offer or solicitation relating to the securities if the person making the offer or solicitation is not qualified to do so, or if it is unlawful for you to receive such an offer or solicitation.
 
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Up to $500,000,000
[MISSING IMAGE: LG_FUELCELLENERGY-4C.JPG]
FuelCell Energy, Inc.
Common Stock
PROSPECTUS SUPPLEMENT
Jefferies
Barclays
June 11, 2021

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