424B5
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PROSPECTUS SUPPLEMENT     Filed pursuant to Rule 424(b)(5)
(To Prospectus dated July 5, 2012)     Registration No. 333-182124

 

LOGO

Insmed Incorporated

6,304,102 Shares of Common Stock

 

 

We are offering 6,304,102 shares of our common stock in this offering at a price of $4.07 per share. We are not paying underwriting discounts or commissions, so the proceeds to us, before expenses, will be approximately $25.7 million. We estimate the total expenses of this offering will be approximately $0.1 million.

You should read this prospectus supplement, including any information incorporated herein, carefully before you invest.

Our common stock is listed on the NASDAQ Capital Market under the symbol “INSM.” On September 27, 2012, the closing price of our common stock as reported on the NASDAQ Capital Market was $4.07 per share.

 

 

Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page S-3.

 

 

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.

 

 

The date of this prospectus supplement is September 28, 2012


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TABLE OF CONTENTS

Prospectus Supplement

 

     Page  

About This Prospectus Supplement

     S-1   

About Insmed Incorporated

     S-2   

Risk Factors

     S-3   

Special note Regarding Forward-Looking Statements

     S-3   

Use of Proceeds

     S-4   

Dilution

     S-5   

Description of Common Stock

     S-6   

Certain Andi-Takeover and Indemnification Provisions of our Articles of Incorporation and By-Laws and Virginia Law

     S-8   

Plan of Distribution

     S-10   

Experts

     S-11   

Legal Matters

     S-11   
     Page  
Prospectus   

About this Prospectus

     i   

About Insmed Incorporated

     i   

Risk Factors

     ii   

Special Note Regarding Forward-Looking Information

     ii   

Ratio of Earnings to Fixed Charges

     1   

Use of Proceeds

     1   

The Securities We May Offer

     1   

Description of Common Stock

     3   

Description of Preferred Stock

     5   

Description of Warrants

     7   

Description of Debt Securities

     8   

Description of Units

     17   

Certain Anti-Takeover and Indemnification Provisions of our Articles of Incorporation and Bylaws and Virginia Law

     19   

Plan of Distribution

     21   

Experts

     23   

Legal Matters

     23   

Where You Can Find More Information

     23   

Incorporation of Certain Documents By Reference

     24   

Important Notice about the Information Presented in this Prospectus Supplement

You should rely only on the information contained or incorporated by reference in this prospectus supplement or the accompanying prospectus. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. For further information, see the section of the accompanying prospectus entitled “Where You Can Find More Information.” We are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted.

You should not assume that the information appearing in this prospectus supplement is accurate as of any date other than the date on the front cover of this prospectus supplement, or that the information contained in any document incorporated by reference is accurate as of any date other than the date of the document incorporated by reference, regardless of the time of delivery of this prospectus supplement or any sale of a security. Our business, financial condition, results of operations and prospects may have changed since such dates. This prospectus supplement shall not constitute an offer or solicitation by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make such offer or solicitation.


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ABOUT THIS PROSPECTUS SUPPLEMENT

This document contains two parts. The first part is this prospectus supplement, which describes the terms of the offering of shares of our common stock and also adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The second part, the accompanying prospectus, provides more general information about us and the securities offered hereby. Generally, when we refer to this prospectus, we are referring to both parts of this document combined together with all documents incorporated by reference. To the extent there is a conflict between the information contained in this prospectus supplement or any “free writing prospectus” we may authorize to be delivered to you, on the one hand, and the information contained in the accompanying prospectus or any document incorporated by reference therein, on the other hand, you should rely on the information in this prospectus supplement or such free writing prospectus, as the case may be, 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 the accompanying prospectus—the statement in the document having the later date modifies or supersedes the earlier statement.

We further note that the representations, warranties and covenants made by us in any agreement that is filed as an exhibit to any document that is incorporated by reference in the accompanying prospectus were made solely for the benefit of the parties to such agreement and the third-party beneficiaries named therein, if any, including, in some cases, for the purpose of allocating risk among the parties to such agreements, and should not be deemed to be a representation, warranty or covenant to you. Moreover, such representations, warranties or covenants were accurate only as of the date when made. Accordingly, such representations, warranties and covenants should not be relied on as accurately representing the current state of our affairs.

Unless the context otherwise requires, the terms “Insmed,” “the Company,” “our company,” “we,” “us,” “our” and similar names refer collectively to Insmed Incorporated and its subsidiaries. ARIKACE is a registered trademark of Insmed Incorporated.

 

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ABOUT INSMED INCORPORATED

We are a biopharmaceutical company focused on developing and commercializing novel, targeted inhaled therapies for patients with high unmet need battling serious orphan lung diseases. Our lead product candidate, ARIKACE® (liposomal amikacin for inhalation), is a differentiated, inhaled antibiotic engineered to deliver a proven and potent anti-infective directly to the site of serious lung infections to improve the efficacy, safety and convenience of treatment for patients. Currently, we are continuing late-stage clinical trials for two initial primary target indications for this product: lung infections caused by Pseudomonas aeruginosa, which we refer to as Pseudomonas, in cystic fibrosis (CF) patients and lung infections caused by non-tuberculous mycobacteria (NTM).

ARIKACE is considered a New Chemical Entity by the United States Food and Drug Administration, or FDA, primarily due to its proprietary liposomal technology. The key active ingredient, amikacin, is an FDA-approved antibiotic with proven efficacy in the treatment of gram-negative infections, including Pseudomonas. ARIKACE is in the aminoglycoside class of antibiotics.

ARIKACE is differentiated by our proprietary advanced liposomal technology, which is designed specifically for targeted delivery of pharmaceuticals to the lung. We believe ARIKACE provides for potential improvements to the conventional inhalation methods of anti-infective delivery of drugs to the pulmonary system for these indications.

Our ongoing ARIKACE clinical development program includes a phase 2 clinical study of ARIKACE in patients with NTM lung disease (TARGET-NTM) as well as a European and Canadian registration phase 3 clinical study of ARIKACE in CF patients with Pseudomonas lung infections (CLEAR-108). We expect to report clinical results from both the CLEAR-108 and TARGET-NTM studies in 2013. Our focus in the near term will be to prepare the Company for commercialization of ARIKACE in Europe and the U.S.

Corporate Information

We were incorporated in the Commonwealth of Virginia on November 29, 1999. We completed a business combination with Transave, Inc., or Transave, a privately-held, New Jersey-based pharmaceutical company focused on the development of differentiated and innovative inhaled pharmaceuticals for the site-specific treatment of serious lung infections, on December 1, 2010. Our integration with Transave was completed in 2011. Our principal executive offices are located at 9 Deer Park Drive, Suite C, Monmouth Junction, New Jersey 08852 and our phone number is (732) 997-4600. Our Internet address is www.insmed.com. The information on our web site is not incorporated by reference into this prospectus supplement and should not be considered to be part of this prospectus supplement.

 

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RISK FACTORS

Investing in our securities involves significant risks. Please see the risk factors under the heading “Risk Factors” in our most recent Annual Report on Form 10-K, as revised or supplemented by our Quarterly Reports on Form 10-Q filed with the Securities and Exchange Commission (SEC) since the filing of our most recent Annual Report on Form 10-K, each of which are on file with the SEC and are incorporated by reference in this prospectus. Before making an investment decision, you should carefully consider these risks as well as other information we include or incorporate by reference in this prospectus. The risks and uncertainties we have described are not the only ones facing our company. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business operations, results of operation, prospects or financial condition.

SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION

This prospectus includes and incorporates forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements, other than statements of historical facts, included or incorporated in this prospectus regarding our strategy, future operations, financial position, future revenues, projected costs, prospects, plans and objectives of management are forward-looking statements. The words “anticipates,” “believes,” “estimates,” “expects,” “intends,” “may,” “plans,” “projects,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. We cannot guarantee that we actually will achieve the plans, intentions or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. There are a number of important factors that could cause our actual results to differ materially from those indicated by these forward-looking statements. These important factors include the factors that we identify in the documents we incorporate by reference in this prospectus, as well as other information we include or incorporate by reference in this prospectus. See “Risk Factors.” You should read these factors and other cautionary statements made in this prospectus, and in the documents we incorporate by reference as being applicable to all related forward-looking statements wherever they appear in this prospectus, and in the documents incorporated by reference. We do not assume any obligation to update any forward-looking statements made by us.

 

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USE OF PROCEEDS

We estimate that the net proceeds from the sale of the 6,304,102 shares will be approximately $25.6 million.

We intend to use the net proceeds from this common stock offering for general corporate purposes, including working capital, capital expenditures, research and development and clinical trial expenditures.

 

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DILUTION

If you invest in our common stock, your interest will be diluted to the extent of the difference between the price per share you pay in this offering and the net tangible book value per share of our common stock immediately after this offering. Our net tangible book value of our common stock as of December 31, 2011 was approximately $81.6 million, or approximately $3.29 per share of common stock based upon 24,833,301 shares outstanding. Net tangible book value per share is equal to our total tangible assets, less our total liabilities, divided by the total number of shares outstanding as of December 31, 2011. After reflecting the sale of 6,304,102 shares of our common stock offered by us at the public offering price of $4.07 per share, our as-adjusted net tangible book value would have been approximately $107.3 million, or approximately $3.45 per share of common stock based upon 31,137,403 shares outstanding. This represents an immediate increase in net tangible book value of $0.16 per share to our existing stockholders and an immediate dilution in net tangible book value of $0.62 per share to new investors. The following table illustrates this calculation on a per share basis:

 

Offering price per share

      $ 4.07   

Net tangible book value per share as of December 31, 2011

   $ 3.29      

Increase in net tangible book value per share attributable to the offering

   $ 0.16      

As-adjusted net tangible book value per share after giving effect to the offering

      $ 3.45   

Dilution in net tangible book value per share to new investors

      $ 0.62   

The foregoing table excludes the following, each as of December 31, 2011:

 

   

891,751 shares of our common stock subject to outstanding stock options at a weighted average exercise price of $5.15 per share;

 

   

2,073,018 shares of our common stock were reserved for future issuances under our stock option plans; and

 

   

157,554 shares of our common stock reserved for issuance upon the exercise of outstanding warrants at an exercise price of $11.00.

 

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DESCRIPTION OF COMMON STOCK

The following is a description of the material terms and provisions of our common stock. It may not contain all the information that is important to you. You can access complete information by referring to our Articles of Incorporation, as amended (the “Articles of Incorporation”) and bylaws, as amended (the “Bylaws”).

General

Under our Articles of Incorporation , we have authority to issue 500,000,000 shares of common stock, par value $0.01 per share. As of September 27, 2012, there were 24,874,852 shares of common stock issued and outstanding. All shares of common stock will, when issued, be duly authorized, fully paid and nonassessable. Accordingly, the full price for the outstanding shares of common stock will have been paid at issuance and any holder of our common stock will not be later required to pay us any additional money for such common stock.

In addition, as of September 27, 2012:

 

   

there were an aggregate of 1,504,189 shares of our common stock subject to outstanding stock options at a weighted average exercise price of $3.89 per share;

 

   

1,213,579 shares of our common stock were reserved for future issuances under our stock option plans;

 

   

there were an aggregate of 495,658 shares of our restricted stock and restricted stock units outstanding; and

 

   

there were an aggregate of 329,932 shares of our common stock subject to an outstanding warrant at an exercise price of $2.94 per share.

Dividends

Subject to the prior rights of any series of preferred stock which may from time to time be outstanding, the holders of our common stock are entitled to receive such dividends, if any, as may be declared from time to time by our board of directors out of legally available funds. In the event we are liquidated, dissolved or our affairs are wound up, after we pay or make adequate provision for all of our known debts and liabilities, each holder of common stock will receive dividends pro rata out of assets that we can legally use to pay distributions, subject to any rights that are granted to the holders of any class or series of preferred stock. As of the date of this prospectus, we have not declared or paid any dividends on our shares of common stock.

Voting Rights

Holders of common stock will have the exclusive power to vote on all matters presented to our shareholders, including the election of directors, except as otherwise provided by Virginia law or as provided with respect to any other class or series of stock, as discussed in more detail below. Holders of common stock are entitled to one vote per share. There is no cumulative voting in the election of our directors, which means that, subject to any rights to elect directors that are granted to the holders of any class or series of preferred stock, a plurality of the votes cast at a meeting of shareholders at which a quorum is present is sufficient to elect a director.

Other Rights

Subject to the preferential rights of any other class or series of stock, all shares of common stock have equal dividend, distribution, liquidation and other rights, and have no preference, appraisal or exchange rights, except for any appraisal rights provided by Virginia law. Furthermore, holders of common stock have no conversion, sinking fund or redemption rights, or preemptive rights to subscribe for any of our securities.

 

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Transfer Agent

The transfer agent and registrar for our common stock is American Stock Transfer and Trust Company. Its address is 10150 Mallard Creek Road, Suite 307, Charlotte, NC 28262.

Our common stock is listed on the NASDAQ Capital Market under the symbol “INSM.”

 

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CERTAIN ANTI-TAKEOVER AND INDEMNIFICATION PROVISIONS OF

OUR ARTICLES OF INCORPORATION AND BY-LAWS AND VIRGINIA LAW

The following is a summary of certain anti-takeover and indemnification provisions of Virginia law and our Articles of Incorporation and Bylaws which affect us and our shareholders. The description below is intended as only a summary. You can access complete information by referring to the Virginia Stock Corporation Act, or VSCA, and our Articles of Incorporation and Bylaws, and the following summary is qualified in its entirety by reference to such documents and the applicable provisions of the VSCA.

Board Composition, Removal of Directors and Filling Vacancies

In accordance with our Articles of Incorporation, our board is divided into three classes serving staggered three-year terms, with one class being elected each year. Our Articles of Incorporation also provide that, for so long as the board is classified, directors may be removed only for cause and then only by the affirmative vote of the holders of at least 75% of the shares of capital stock issued and outstanding and entitled to vote generally in the election of directors. Furthermore, unless and until filled by the shareholders, any vacancy on our board of directors, however occurring, including a vacancy resulting from an increase in the size of our board, may be filled solely (i) by the affirmative vote of a majority of our directors then in office even if less than a quorum, or (ii) at an annual meeting of shareholders by the shareholders entitled to vote on the election of directors. Any amendment to the provisions of the Articles of Incorporation with respect to these matters must be approved by at least 75% of the outstanding shares of capital stock entitled to vote on the amendment.

Blank Check Preferred Stock

We have shares of preferred stock available for future issuance without shareholder approval, except to the extent holders of preferred stock have a consent right under the terms of their preferred stock. The existence of authorized but unissued shares of preferred stock may enable our board of directors to render more difficult or to discourage an attempt to obtain control of us by means of a merger, tender offer, proxy contest or otherwise. For example, if in the due exercise of its fiduciary obligations, our board of directors were to determine that a takeover proposal is not in the best interests of us or our shareholders, our board of directors could cause shares of preferred stock to be issued without shareholder approval in one or more private offerings or other transactions that might dilute the voting or other rights of the proposed acquirer or insurgent shareholder or shareholder group. In this regard, our Articles of Incorporation grant our board of directors broad power to establish the rights and preferences of authorized and unissued shares of preferred stock. The issuance of shares of preferred stock could decrease the amount of earnings and assets available for distribution to holders of shares of common stock. The issuance may also adversely affect the rights and powers, including voting rights, of these holders and may have the effect of delaying, deterring or preventing a change in control of us.

Affiliated Transactions Statute

Virginia law contains provisions governing affiliated transactions. In general, these provisions prohibit a Virginia corporation from engaging in affiliated transactions with any holder of more than 10% of any class of its outstanding voting shares, or an interested shareholder, for a period of three years following the date that such person became an interested shareholder unless:

 

   

the disinterested members of the board of directors of the corporation and the holders of two-thirds of the voting shares, other than the shares beneficially owned by the interested shareholder, approve the affiliated transaction; or

 

   

before the date the person became an interested shareholder, the board of directors approved the transaction that resulted in the shareholder becoming an interested shareholder.

After three years, any such transaction must be at a “fair price,” as statutorily defined or must be approved by the holders of two-thirds of the voting shares, other than the shares beneficially owned by the interested shareholder.

 

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Control Share Acquisitions Statute

Virginia law also contains provisions relating to control share acquisitions, which are transactions causing the voting strength of any person acquiring beneficial ownership of shares of a Virginia public corporation to meet or exceed certain threshold percentages (20%, 33 1/3% or 50%) of the total votes entitled to be cast for the election of directors. Shares acquired in a control share acquisition have no voting rights unless:

 

   

the voting rights are granted by a majority vote of all outstanding shares other than those held by the acquiring person or any officer or employee director of the corporation; or

 

   

The acquiring person may require that a special meeting of the shareholders be held to consider the grant of voting rights to the shares acquired in the control share acquisition.

As permitted by Virginia law, our Articles of Incorporation contain a provision opting out of the control share acquisition provisions of Virginia law.

Indemnification of Directors and Officers

Our Articles of Incorporation provide that no director or officer shall be liable to Insmed or our shareholders for monetary damages except for liability resulting from willful misconduct or a knowing violation of the criminal law or of any federal or state securities laws.

Our Articles of Incorporation require us to indemnify any director, officer or employee who is or was a party to a proceeding due to his or her status as a director or officer of Insmed or who is or was serving at our request as a director, officer, or employee of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise. This indemnification covers all reasonable expenses incurred by any such director, officer, or employee. Such indemnification will be made unless the board of directors, by a majority vote of a quorum of disinterested directors or, under certain circumstances, independent legal counsel appointed by the board of directors, determines that the director or officer seeking indemnification was guilty of willful misconduct or a knowing violation of the criminal law.

Insofar as indemnification for liabilities under the Securities Act may be permitted to directors, officers and controlling persons of Insmed pursuant to the foregoing provisions or otherwise, we have been informed that, in the opinion of the SEC, indemnification for liabilities under the Securities Act is against public policy and is unenforceable.

 

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PLAN OF DISTRIBUTION

We have agreed to sell, directly to certain investors, an aggregate of 6,304,102 shares of our common stock at a price of $4.07 per share. No underwriters or agents were engaged by us for this transaction. We estimate the total expenses of this offering that will be payable by us will be approximately $0.1 million.

 

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EXPERTS

The consolidated financial statements of Insmed Incorporated appearing in Insmed’s Annual Report (Form 10-K) for the year ended December 31, 2011 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their report thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

LEGAL MATTERS

Certain legal matters, including the legality of the securities offered, will be passed upon for us by Pepper Hamilton LLP.

 

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PROSPECTUS

$75,000,000

 

LOGO

Insmed Incorporated

Common Stock

Preferred Stock

Warrants

Debt Securities

Units

 

 

This prospectus relates to common stock, preferred stock, warrants, debt securities and units that we may sell from time to time in one or more offerings up to a total dollar amount of $75,000,000 on terms to be determined at the time of sale. We will provide specific terms of these securities in supplements to this prospectus. You should read this prospectus and any supplement carefully before you invest. This prospectus may not be used to offer and sell securities unless accompanied by a prospectus supplement for those securities.

Our common stock is listed on the Nasdaq Capital Market under the symbol “INSM.”

These securities 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. We may also describe the plan of distribution for any particular offering of these securities in any applicable prospectus supplement. If any agents, underwriters or dealers are involved in the sale of any securities 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.

 

 

Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page ii.

 

 

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus may not be used to consummate sales of securities unless it is accompanied by a prospectus supplement.

 

 

The date of this prospectus is July 5, 2012


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TABLE OF CONTENTS

 

     Page

About this Prospectus

   i

About Insmed Incorporated

   i

Risk Factors

   ii

Special Note Regarding Forward-Looking Information

   ii

Ratio of Earnings to Fixed Charges

   1

Use of Proceeds

   1

The Securities We May Offer

   1

Description of Common Stock

   3

Description of Preferred Stock

   5

Description of Warrants

   7

Description of Debt Securities

   8

Description of Units

   17

Certain Anti-Takeover and Indemnification Provisions of our Articles of Incorporation and Bylaws and Virginia Law

   19

Plan of Distribution

   21

Experts

   23

Legal Matters

   23

Where You Can Find More Information

   23

Incorporation of Certain Documents By Reference

   24

Important Notice about the Information Presented in this Prospectus

You should rely only on the information contained or incorporated by reference in this prospectus or any applicable prospectus supplement. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. For further information, see the section of this prospectus entitled “Where You Can Find More Information.” We are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted.

You should not assume that the information appearing in this prospectus or any applicable prospectus supplement is accurate as of any date other than the date on the front cover of this prospectus or the applicable prospectus supplement, or that the information contained in any document incorporated by reference is accurate as of any date other than the date of the document incorporated by reference, regardless of the time of delivery of this prospectus or any prospectus supplement or any sale of a security. Our business, financial condition, results of operations and prospects may have changed since such dates. Neither this prospectus nor any accompanying supplement shall constitute an offer or solicitation by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make such offer or solicitation.


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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, or the SEC, using a “shelf” registration process. Under this shelf registration process, we may sell any combination of the securities described in this prospectus in one or more offerings up to a total dollar amount of $75,000,000. This prospectus provides you with a general description of the securities we may offer. Each time we sell securities, we will provide a prospectus supplement that will contain specific information about the securities being offered and the terms of that offering. The prospectus supplement may also add to, update or change information contained in this prospectus. This prospectus, together with any accompanying prospectus supplement and any free writing prospectus we may authorize to be delivered to you, includes all material information relating to this offering.

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 other reports we file with the SEC on the SEC’s web site or at the SEC’s offices, each as further describe below under the heading “Where You Can Find More Information.”

Unless the context otherwise requires, the terms “Insmed,” “the Company,” “our company,” “we,” “us,” “our” and similar names refer collectively to Insmed Incorporated and its subsidiaries. ARIKACE is a registered trademark of Insmed Incorporated.

ABOUT INSMED INCORPORATED

We are a development-stage biopharmaceutical company with expertise in proprietary, advanced liposomal technology designed specifically for inhalation lung delivery. We develop innovative inhaled treatments for serious lung infections. Our proprietary liposomal technology is designed specifically for delivery of pharmaceuticals to the lung, and we believe it provides for potential improvements to the conventional inhalation methods of delivering drugs to the pulmonary system. These potential advantages include improvements in efficacy, safety and patient convenience. Our primary focus is on orphan markets with high unmet medical needs, which we believe presents a significant opportunity, as their challenge and complexity best fit our knowledge, know-how and expertise.

Our current strategy is to utilize our proprietary liposomal technology to develop safe and effective medicines that improve upon standards of care for those orphan respiratory diseases in which patient needs are currently unmet. Our initial primary target indications are Pseudomonas aeruginosa, which we refer to as Pseudomonas, lung infections in cystic fibrosis, or CF, patients and patients with non-tuberculous mycobacteria, or NTM, lung infections.

Our lead product, ARIKACE® (liposomal amikacin for inhalation), is a differentiated, inhaled antibiotic supported by positive Phase 2 results for treating serious lung infections due to susceptible bacteria. We believe that ARIKACE has potential usage in at least two orphan indications with high unmet needs: CF patients who have Pseudomonas lung infections and patients who have NTM lung infections. ARIKACE is considered a New Chemical Entity by the United States Food and Drug Administration, or FDA, primarily due to its proprietary liposomal technology. The key active ingredient, amikacin, is an FDA- approved antibiotic with proven efficacy in the treatment of gram-negative infections, including Pseudomonas. ARIKACE is in the aminoglycoside class of antibiotics.

We are currently focused on conducting our ARIKACE clinical development program which includes a phase 2 clinical study of ARIKACE in patients with NTM lung disease (TARGET-NTM), as well as a European and Canadian registration phase 3 clinical study of ARIKACE in CF patients with Pseudomonas lung infections (CLEAR-108).

Corporate Information

We were incorporated in the Commonwealth of Virginia on November 29, 1999. We completed a business combination with Transave, Inc., or Transave, a privately-held, New Jersey-based pharmaceutical company focused on the development of differentiated and innovative inhaled pharmaceuticals for the site-specific treatment of serious lung infections, on December 1, 2010. Our integration with Transave was completed in 2011. Our principal executive offices are located at 9 Deer Park Drive, Suite C, Monmouth Junction, New Jersey 08852 and our phone number is (732) 997-4600. Our Internet address is www.insmed.com. The information on our web site is not incorporated by reference into this prospectus and should not be considered to be part of this prospectus.

 

 

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RISK FACTORS

Investing in our securities involves significant risks. Please see the risk factors under the heading “Risk Factors” in our most recent Annual Report on Form 10-K, as revised or supplemented by our Quarterly Reports on Form 10-Q filed with the SEC since the filing of our most recent Annual Report on Form 10-K, each of which are on file with the SEC and are incorporated by reference in this prospectus. Before making an investment decision, you should carefully consider these risks as well as other information we include or incorporate by reference in this prospectus and any prospectus supplement. The risks and uncertainties we have described are not the only ones facing our company. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business operations, results of operation, prospects or financial condition.

SPECIAL NOTE REGARDING FORWARD-LOOKING INFORMATION

This prospectus includes and incorporates forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements, other than statements of historical facts, included or incorporated in this prospectus regarding our strategy, future operations, financial position, future revenues, projected costs, prospects, plans and objectives of management are forward-looking statements. The words “anticipates,” “believes,” “estimates,” “expects,” “intends,” “may,” “plans,” “projects,” “will,” “would” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. We cannot guarantee that we actually will achieve the plans, intentions or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. There are a number of important factors that could cause our actual results to differ materially from those indicated by these forward-looking statements. These important factors include the factors that we identify in the documents we incorporate by reference in this prospectus, as well as other information we include or incorporate by reference in this prospectus and any prospectus supplement. See “Risk Factors.” You should read these factors and other cautionary statements made in this prospectus and any accompanying prospectus supplement, and in the documents we incorporate by reference as being applicable to all related forward-looking statements wherever they appear in the prospectus and any accompanying prospectus supplement, and in the documents incorporated by reference. We do not assume any obligation to update any forward-looking statements made by us.

 

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RATIOS OF EARNINGS TO FIXED CHARGES

We have not recorded earnings for any of our last five fiscal years and the first quarter of 2012, except for fiscal year 2009, when we completed the sale of our follow-on biologics platform to Merck & Co, Inc. Earnings (loss) consists of loss before provision for income taxes and cumulative effects of accounting changes plus fixed charges. Fixed charges consist of interest expense and a portion of rental expense that we believe to be representative of interest. The ratio of earnings to fixed charges was computed by dividing earnings by fixed charges. The following table discloses our dollar coverage deficiency.

 

     Three
months
ended
    Year Ended December 31,  
     March 31,
2012
    2011     2010     2009      2008     2007  

Earnings (loss) (in thousands)

   $ (6,819   $ (59,560   $ (6,154   $ 119,654       $ (14,309   $ (19,178

Fixed Charges (in thousands)

   $ 24      $ 104      $ 202      $ 827       $ 1,358      $ 784   

Ratio of Earnings to Fixed Charges

     —          —          —          145         —          —     

Coverage deficiency to attain a ratio of 1:1 (in thousands)

   $ (6,795   $ (59,456   $ (5,952     —         $ (12,951   $ (18,394

The ratios presented in the table above are based solely on historical financial information, and no pro forma adjustments have been made thereto. As of the date of this prospectus, we have no shares of preferred stock outstanding and have not declared or paid any preferred stock dividends for the periods set forth above.

USE OF PROCEEDS

Unless otherwise provided in the applicable prospectus supplement, we intend to use the net proceeds from the sale of these securities for working capital and other general corporate purposes, research and development expenses, including clinical trial costs, and possibly acquisitions of other businesses, products or technologies. We have not yet determined the amount of net proceeds to be used specifically for any of the foregoing purposes. Accordingly, our management will have significant discretion and flexibility in applying the net proceeds from the sale of these securities. Pending any use, as described above, we intend to invest the net proceeds in high-quality, short-term, interest-bearing securities. Our plans to use the estimated net proceeds from the sale of these securities may change, and if they do, we will update this information in a prospectus supplement.

THE SECURITIES WE MAY OFFER

The descriptions of the securities contained in this prospectus, together with the applicable prospectus supplements, summarize the material terms and provisions of the various types of securities that we may offer. We will describe in the applicable prospectus supplement relating to any securities the particular terms of the securities offered by that prospectus supplement. If we so indicate in the applicable prospectus supplement, the terms of the securities may differ from the terms we have summarized below. We will also include in the prospectus supplement information, where applicable, about material United States federal income tax considerations relating to the securities, and the securities exchange, if any, on which the securities will be listed.

 

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We may sell from time to time, in one or more offerings:

 

   

common stock;

 

   

preferred stock;

 

   

debt securities;

 

   

warrants to purchase common stock, preferred stock, debt securities or units; or

 

   

units comprised of common stock, preferred stock, warrants, and debt securities in any combination.

In this prospectus, we refer to the common stock, preferred stock, debt securities, warrants, and units collectively as “securities.” The total dollar amount of all securities that we may issue will not exceed $75,000,000.

If we issue debt securities at a discount from their original stated principal amount, then, for purposes of calculating the total dollar amount of all securities issued under this prospectus, we will treat the initial offering price of the debt securities as the total original principal amount of the debt securities.

This prospectus may not be used to consummate a sale of securities unless it is accompanied by a prospectus supplement.

 

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DESCRIPTION OF COMMON STOCK

The following is a description of the material terms and provisions of our common stock. It may not contain all the information that is important to you. You can access complete information by referring to our Articles of Incorporation, as amended (the “Articles of Incorporation”) and bylaws, as amended (the “Bylaws”).

General

Under our Articles of Incorporation , we have authority to issue 500,000,000 shares of common stock, par value $0.01 per share. As of June 11, 2012, there were 24,874,852 shares of common stock issued and outstanding. All shares of common stock will, when issued, be duly authorized, fully paid and nonassessable. Accordingly, the full price for the outstanding shares of common stock will have been paid at issuance and any holder of our common stock will not be later required to pay us any additional money for such common stock.

In addition, as of June 11, 2012:

 

   

there were an aggregate of 838,546 shares of our common stock subject to outstanding stock options at a weighted average exercise price of $4.57082 per share;

 

   

2,069,549 shares of our common stock were reserved for future issuances under our stock option plans; and

 

   

there were an aggregate of 491,331 shares of our restricted stock and restricted stock units outstanding..

Dividends

Subject to the prior rights of any series of preferred stock which may from time to time be outstanding, the holders of our common stock are entitled to receive such dividends, if any, as may be declared from time to time by our board of directors out of legally available funds. In the event we are liquidated, dissolved or our affairs are wound up, after we pay or make adequate provision for all of our known debts and liabilities, each holder of common stock will receive dividends pro rata out of assets that we can legally use to pay distributions, subject to any rights that are granted to the holders of any class or series of preferred stock. As of the date of this prospectus, we have not declared or paid any dividends on our shares of common stock.

Voting Rights

Holders of common stock will have the exclusive power to vote on all matters presented to our shareholders, including the election of directors, except as otherwise provided by Virginia law or as provided with respect to any other class or series of stock, as discussed in more detail below. Holders of common stock are entitled to one vote per share. There is no cumulative voting in the election of our directors, which means that, subject to any rights to elect directors that are granted to the holders of any class or series of preferred stock, a plurality of the votes cast at a meeting of shareholders at which a quorum is present is sufficient to elect a director.

Other Rights

Subject to the preferential rights of any other class or series of stock, all shares of common stock have equal dividend, distribution, liquidation and other rights, and have no preference, appraisal or exchange rights, except for any appraisal rights provided by Virginia law. Furthermore, holders of common stock have no conversion, sinking fund or redemption rights, or preemptive rights to subscribe for any of our securities.

Transfer Agent

The transfer agent and registrar for our common stock is American Stock Transfer and Trust Company. Its address is 10150 Mallard Creek Road, Suite 307, Charlotte, NC 28262.

 

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Listing

Our common stock is listed on the Nasdaq Capital Market under the symbol “INSM.”

Registration Rights

We have granted registration rights to certain former Transave stockholders holding an aggregate of 3,887,458 shares of our common stock. Subject to specified limitations, holders of these registration rights may require that we register all or part of the shares of common stock issued to such holders of these registration rights for sale under the Securities Act. The registration rights include two demand registrations, “piggy-back” registration rights, and Form S-3 shelf registration rights. The registration rights are subject to certain dollar thresholds and other limitations, including, if applicable, holdbacks at the request of underwriters.

 

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DESCRIPTION OF PREFERRED STOCK

The following is a description of the material terms and provisions of our preferred stock. It may not contain all the information that is important to you. You can access complete information by referring to our Articles of Incorporation and Bylaws and to any applicable amendment to the Articles of Incorporation designating terms of a series of preferred stock, including, without limitation, certificates of designation.

General

Under our Articles of Incorporation, we have authority to issue 200,000,000 shares of preferred stock, par value $.01 per share. 500,000 shares of preferred stock were designated as Series A Junior Participating Preferred Stock by our board of directors in connection with the adoption of a rights plan. The rights plan has expired by its terms and is no longer in effect.

No shares of Series A Junior Participating Preferred Stock are outstanding as of the date of this prospectus. We do not have any other shares of preferred stock outstanding as of the date of this prospectus.

Shares of preferred stock may be issued from time to time, in one or more series, as authorized by our board of directors. Prior to the issuance of shares of each series, the board of directors is required by the Virginia Stock Corporation Act (the “VSCA”) and our Articles of Incorporation to fix and determine, for each series, the preferences, rights and limitations of the shares of each series and any qualifications, limitations and restrictions thereof, as are permitted by Virginia law. Our board of directors could authorize the issuance of shares of preferred stock with terms and conditions that could have the effect of discouraging a takeover or other transactions that holders of common stock might believe to be in their best interests or in which holders of some, or a majority, of the shares of common stock might receive a premium for their shares over the then market price of such shares of common stock. See “Certain Anti-Takeover and Indemnification Provisions of our Articles of Incorporation and Bylaws and Virginia Law” in this prospectus. When issued, the preferred stock will be fully paid and nonassessable and will have no preemptive rights.

Terms

If we decide to issue any preferred stock pursuant to this prospectus, we will describe in a prospectus supplement the terms of the preferred stock, including, if applicable, the following:

 

   

the title of the series and stated value;

 

   

the number of shares of the series of preferred stock offered, the liquidation preference per share, if applicable, and the offering price;

 

   

the applicable dividend rate(s) or amount(s), period(s) and payment date(s) or method(s) of calculation thereof;

 

   

the date from which dividends on the preferred stock will accumulate, if applicable;

 

   

any provisions for a sinking fund;

 

   

any applicable provision for redemption and the price or prices, terms and conditions on which preferred stock may be redeemed;

 

   

any securities exchange listing;

 

   

any voting rights and powers;

 

   

the terms and conditions, if applicable, of conversion into shares of our common stock, including the conversion price or rate or manner of calculation thereof;

 

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a discussion of any material United States federal income tax considerations;

 

   

the relative ranking and preference as to dividend rights and rights upon our liquidation, dissolution or the winding up of our affairs;

 

   

any limitations on issuance of any series of preferred stock ranking senior to or on a parity with such series of preferred stock as to dividend rights and rights upon our liquidation, dissolution or the winding up of our affairs; and

 

   

any other specific terms, preferences, rights, limitations or restrictions of such series of preferred stock.

Series A Junior Participating Preferred Stock

Liquidation Preference: The Series A Junior Participating Preferred Stock ranks junior to all other series of our preferred stock as to the payment of dividends and the distribution of assets, unless the terms of any such series provide otherwise. Upon liquidation, dissolution or winding up of Insmed, the holders of the shares of Series A Junior Participating Preferred Stock are entitled to receive $100 per share, plus any accrued and unpaid dividends and distributions thereonto the date of such payment. In case of any consolidation, merger, combination or other transaction in which the shares of common stock are exchanged for or changed into other stock or securities, cash and/or any other property, the shares of Series A Junior Participating Preferred Stock will at the same time be similarly exchanged or changed in an amount per share equal to 1000 times the aggregate amount of stock, securities, cash and/or any other property in to which or for which each share of common stock is changed or exchanged.

Dividend: Subject to the prior and superior rights of the holders of any shares of any series of preferred stock, shares of the Series A Junior Participating Preferred Stock are entitled to receive quarterly dividends in an amount per share equal to the greater of (i) $1.00 or (ii) 1000 times the aggregate per share amount of all cash and non-cash dividends (other than dividends payable in shares of common stock) declared on the common stock.

Redemption: The shares of Series A Junior Participating Preferred Stock are not redeemable.

Voting: Each share of Series A Junior Participating Preferred Stock will entitle its holder to 1,000 votes on all matters submitted to a vote of our shareholders. The holders of shares of Series A Junior Participating Preferred Stock and the holders of shares of common stock will vote together as one class on all matters to a vote of our shareholders. If at any time dividends on any Series A Junior Participating Preferred Stock are in arrears in an amount equal to six quarterly dividends thereon, until all such accrued and unpaid dividends for all previous and current quarterly dividend periods are paid on all shares of Series A Junior Participating Preferred Stock, all holders of preferred stock (including holders of the Series A Junior Participating Preferred Stock) with dividends in arrears in an amount equal to six quarterly dividends thereon, voting as a class, irrespective of series, have the right to elect two directors. At any time when any shares of Series A Junior Participating Preferred Stock are outstanding, the Articles of Incorporation may not be amended in any manner that would materially alter the powers, preferences or special rights of the Series A Junior Participating Preferred Stock so as to affect them adversely without the affirmative vote of the holders of a majority or more of the then outstanding shares of the Series A Junior Participating Preferred Stock, voting separately as a class.

 

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DESCRIPTION OF WARRANTS

We may issue warrants for the purchase of common stock, preferred stock, debt securities or units. Warrants may be issued independently or together with common stock, preferred stock, debt securities or units, and the warrants may be attached to or separate from such securities. We may issue warrants directly or under a warrant agreement to be entered into between us and a warrant agent. We will name any warrant agent in the applicable prospectus supplement. Any warrant agent will act solely as our agent in connection with the warrants of a particular series and will not assume any obligation or relationship of agency or trust for or with any holders or beneficial owners of warrants.

The following is a description of the general terms and provisions of any warrants we may issue and may not contain all the information that is important to you. You can access complete information by referring to the applicable prospectus supplement. In the applicable prospectus supplement, we will describe the terms of the warrants and any applicable warrant agreement, including, where applicable, the following:

 

   

the offering price and aggregate number of warrants offered;

 

   

the designation and terms of the securities with which the warrants are issued and the number of warrants issued with each such security;

 

   

the date on and after which the warrants and the related securities will be separately transferable;

 

   

in the case of warrants to purchase common stock, preferred stock, or units, the number of shares of common stock, preferred stock, or units, as the case may be, purchasable upon the exercise of one warrant and the price at which these securities may be purchased upon such exercise;

 

   

in the case of warrants to purchase debt securities, the principal amount of debt securities purchasable upon exercise of one warrant and the price at which this principal amount of debt securities may be purchased upon exercise;

 

   

the effect of any merger, consolidation, sale or other disposition of our business on the warrant agreement and the warrants;

 

   

the terms of any rights to redeem or call the warrants;

 

   

any provisions for changes to or adjustments in the exercise price or number of securities issuable upon exercise of the warrants;

 

   

the dates on which the right to exercise the warrants will commence and expire;

 

   

the manner in which the warrant agreement and warrants may be modified;

 

   

a discussion of any material United States federal income tax considerations of holding or exercising the warrants;

 

   

the terms of the securities issuable upon exercise of the warrants; and

 

   

any other specific terms, preferences, rights or limitations of or restrictions on the warrants.

 

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DESCRIPTION OF DEBT SECURITIES

This section outlines some of the provisions of the debt securities we may issue and the indenture and supplemental indentures pursuant to which they may be issued. This description may not contain all of the information that is important to you and is qualified in its entirety by reference to the form of indenture and the applicable supplemental indenture with respect to the debt securities of any particular series. The specific terms of any series of debt securities will be described in the applicable prospectus supplement. If so described in a particular supplement, the specific terms of any series of debt securities may differ from the general description of terms presented below.

We may issue secured or unsecured debt securities. Our debt securities will be issued under an indenture to be entered into between us and a trustee to be designated by us, a form of which is filed as an exhibit to the registration statement of which this prospectus forms a part. Our debt securities may be convertible into our common stock or other of our securities.

When we offer to sell a particular series of debt securities, we will describe the specific terms of the series in a supplement to this prospectus. We will also indicate in the prospectus supplement whether the general terms and provisions described in this prospectus apply to a particular series of debt securities. To the extent the information contained in the prospectus supplement differs from this summary description, you should rely on the information in the prospectus supplement.

Unless otherwise specified in a supplement to this prospectus, the debt securities will be the direct, unsecured obligations of our company and will rank equally with all of our other unsecured and unsubordinated indebtedness. The holders of our debt securities will be structurally subordinated to holders of any indebtedness (including trade payables) of any of our subsidiaries.

In the event that any series of debt securities will be subordinated to other indebtedness that we have outstanding or may incur, the terms of the subordination will be set forth in the prospectus supplement relating to such debt securities.

We have described select portions of the indenture below. This description may not contain all of the information that is important to you. The form of indenture has been included as an exhibit to the registration statement of which this prospectus is a part, and you should read the indenture for provisions that may be important to you. In the summary below, we have included references to the section numbers of the indenture so that you can easily locate these provisions.

General

The terms of each series of debt securities will be established by or pursuant to a resolution of our board of directors and set forth or determined in the manner provided in a resolution of our board of directors, in an officers’ certificate or by a supplemental indenture. (Section 2.02)

We may issue an unlimited amount of debt securities under the indenture that may be in one or more series with the same or various maturities, at par, at a premium, or at a discount. When we offer a particular series of debt securities, we will identify the title of the debt securities, the trustee or trustees (to which we refer in this description collectively as the trustee) and the aggregate principal amount of the debt securities we are offering, and we will describe the following terms of the debt securities, if applicable:

 

   

the price or prices (expressed as a percentage of the principal amount) at which we will issue the debt securities;

 

   

any limit on the aggregate principal amount of the debt securities;

 

   

the date or dates on which we will pay the principal on the debt securities;

 

   

the rate or rates (which may be fixed or variable) per annum or, if applicable, the method used to determine the rate or rates (including any rate or rates determined by reference to any commodity, commodity index, stock exchange index or financial index) at which the debt securities will bear interest, the date or dates from which interest will accrue, the date or dates on which interest will commence and be payable and any regular record date for the interest payable on any interest payment date;

 

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the place or places where principal of and interest on the debt securities will be payable, where the debt securities may be surrendered for registration of transfer or exchange and where notices and demands to or upon us in respect of the debt securities and the indenture may be served, and the method of such payment, if by wire transfer, mail or other means;

 

   

the terms and conditions on which we may redeem the debt securities;

 

   

any obligations we have to redeem or purchase the debt securities pursuant to any sinking fund or analogous provisions or at the option of a holder of debt securities and the date or dates on which or period or periods within which, the price or prices at which and the other detailed terms and provisions upon which the debt securities will be redeemed or purchased pursuant to such obligations;

 

   

the denominations in which the debt securities will be issued, if other than denominations of $1,000 and integral multiples thereof;

 

   

whether the debt securities will be issued as bearer or fully registered securities and, if they are to be issued as fully registered securities, whether they will be in the form of certificated debt securities or global debt securities;

 

   

the portion of principal amount of the debt securities payable upon acceleration or declaration of acceleration of the maturity date, if other than the principal amount;

 

   

the currency of denomination of the debt securities;

 

   

the designation of the currency, currencies or currency units in which payment of principal of and interest on the debt securities will be made;

 

   

if payments of principal of or interest on the debt securities will be made in one or more currencies or currency units other than that or those in which the debt securities are denominated, the manner in which the exchange rate with respect to these payments will be determined;

 

   

the terms, if any, of subordination of the debt securities;

 

   

any provisions relating to any security provided for the debt securities;

 

   

any addition to or change in the events of default described in this prospectus or in the indenture with respect to the debt securities and any change in the acceleration provisions described in this prospectus or in the indenture with respect to the debt securities;

 

   

any addition to or change in the covenants described in this prospectus or in the indenture with respect to the debt securities;

 

   

any provisions relating to conversion of any debt securities into equity interests, including the conversion price and the conversion period, whether conversion will be mandatory, at the option of the holders of the debt securities or at our option, events requiring an adjustment of the conversion price, and provisions affecting conversion if the debt securities are redeemed;

 

   

any exchange features of the debt securities;

 

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whether any underwriter(s) will act as market maker(s) for the debt securities;

 

   

the extent to which a secondary market for the debt securities is expected to develop;

 

   

any addition to or change in the provisions relating to satisfaction and discharge of the indenture described in this prospectus with respect to the debt securities, or in the provisions relating to legal defeasance or covenant defeasance under the indenture described in this prospectus with respect to the debt securities;

 

   

any addition to or change in the provisions relating to modification of the indenture both with and without the consent of holders of debt securities issued under the indenture;

 

   

any other terms or provisions of the debt securities, which may supplement, modify or delete any provision of the indenture as it applies to that series; and

 

   

any registrars, paying agents, service agents, depositaries, interest rate calculation agents, exchange rate calculation agents or other agents with respect to the debt securities. (Section 2.02)

We will provide you with information on the material United States federal income tax considerations and other special considerations applicable to any series of debt securities in the applicable prospectus supplement.

The indenture does not limit our ability to issue convertible or subordinated debt securities. Any conversion or subordination provisions of a particular series of debt securities will be set forth in the resolution of our board of directors, the officers’ certificate or supplemental indenture related to that series of debt securities and will be described in the relevant prospectus supplement.

We may issue debt securities that provide for an amount less than their stated principal amount to be due and payable upon declaration of acceleration of their maturity pursuant to the terms of the indenture.

One or more series of debt securities may be sold at a discount to their stated principal amount or may bear no interest or interest at a rate which at the time of issuance is below market rates. One or more series of debt securities may be variable rate debt securities that may be exchanged for fixed rate debt securities.

Debt securities may be issued where the amount of principal and/or interest payable is determined by reference to one or more currency exchange rates, commodity prices, commodity indices, stock exchange indices, financial indices, equity indices or other factors. Holders of such securities may receive a principal amount or a payment of interest that is greater than or less than the amount of principal or interest otherwise payable on such dates, depending upon the value of the applicable currencies, commodities, commodity indices, stock exchange indices, financial indices, equity indices or other factors. Information as to the methods for determining the amount of principal or interest, if any, payable on any date, the currencies, commodities, commodity indices, stock exchange indices, financial indices, equity indices or other factors to which the amount payable on such date is linked and certain additional United States federal income tax considerations will be set forth in the applicable prospectus supplement.

If we denominate the purchase price of any of the debt securities in a foreign currency or currencies or a foreign currency unit or units, or if the principal of and interest on any series of debt securities is payable in a foreign currency or currencies or a foreign currency unit or units, we will provide you with information on the restrictions, elections, general United States federal tax considerations, specific terms and other information with respect to that issue of debt securities and such foreign currency or currencies or foreign currency unit or units in the applicable prospectus supplement.

When we determine to issue debt securities, we will instruct the trustee to authenticate for issuance such debt securities in a principal amount that we will provide in a resolution of our board of directors, in an officers’ certificate or by a supplemental indenture. Our instructions may authorize the trustee to authenticate and deliver such debt securities upon our oral or electronic instructions or the oral or electronic instructions of our authorized agent or agents. (Section 2.03)

 

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Transfer and Exchange

We expect most debt securities to be issued in denominations of $1,000 and integral multiples thereof. Each debt security will be represented by either one or more global securities deposited with and registered in the name of a depositary to be designated by us in the applicable prospectus supplement, or a nominee (we refer to any debt security represented by a global security as a “book-entry debt security”), or by a certificate issued in definitive registered or bearer form (we refer to any fully registered debt security represented by a certificate as a “registered certificated debt security”), as set forth in the applicable prospectus supplement. Except as set forth under the heading “Global Securities” below, book-entry debt securities will not be issuable in certificated form.

You may transfer or exchange registered certificated debt securities at any office we maintain for this purpose in accordance with the terms of the indenture. No service charge will be made for any transfer or exchange of registered certificated debt securities, but we may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with a transfer or exchange. (Section 2.07)

You may effect the transfer of registered certificated debt securities, and the right to receive the principal of and interest on those registered certificated debt securities, only by surrendering the certificate representing those registered certificated debt securities and the issuance by us or the trustee of a certificate to the new holder. (Section 2.07)

Global Securities

The debt securities of a series may be issued in whole or in part in the form of one or more global securities that will be deposited with, or on behalf of, a depositary (the “depositary”) identified in the prospectus supplement. Global securities will be issued to the depositary in registered certificated form and in either temporary or definitive form. Unless and until it is exchanged in whole or in part for the individual debt securities, a global security may not be transferred except as a whole by the depositary for such global security to a nominee of such depositary or by a nominee of such depositary to such depositary or another nominee of such depositary or by such depositary or any such nominee to a successor of such depositary or a nominee of such successor. The specific terms of the depositary arrangement with respect to any debt securities of a series and the rights of and limitations upon owners of beneficial interests in a global security will be described in the applicable prospectus supplement. (Section 2.14)

No Protection in the Event of a Change of Control or a Highly Leveraged Transaction

Unless we state otherwise in the applicable prospectus supplement, the debt securities will not contain any provisions which may afford holders of the debt securities protection in the event we have a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control) that could adversely affect holders of debt securities.

Covenants

We will set forth in the applicable prospectus supplement any restrictive covenants applicable to the particular debt securities being issued.

Subordination

Debt securities of a series may be subordinated, which we refer to as subordinated debt securities, to senior indebtedness (as will be defined in the applicable prospectus supplement) to the extent set forth in the applicable prospectus supplement.

Consolidation, Merger and Sale of Assets

We may not consolidate with or merge with or into, or sell, lease, transfer, convey, or otherwise dispose of or assign all or substantially all of our properties and assets to, any entity or enter into a plan of liquidation unless:

 

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we are the resulting or surviving corporation in such consolidation or merger or the successor entity in the transaction (if other than us)(or, in the case of a plan of liquidation, any entity to which our properties or assets are transferred), is a corporation organized and validly existing under the laws of any U.S. domestic jurisdiction and expressly assumes, by supplemental indenture, our obligations on the debt securities and under the indenture; and

 

   

immediately after giving effect to the transaction, no event of default under the indenture, and no event which, after notice or lapse of time, or both, would become an event of default under the indenture, shall have occurred and be continuing.

Notwithstanding the above, any of our subsidiaries may consolidate with, merge into or transfer all or part of its properties and assets to us or any of our other subsidiaries. (Section 5.01)

Events of Default

An “event of default” means, with respect to any series of debt securities, any of the following:

 

   

default in the payment of any interest upon any debt security of that series when it becomes due and payable, and continuance of that default for a period of 30 consecutive days;

 

   

default in the payment of principal of any debt security of that series when and as due and payable;

 

   

default on any obligation to deposit any sinking fund payment when and due and payable in respect of any debt security of that series;

 

   

default in the performance or breach of any other covenant or warranty by us in the indenture or any debt security (other than a covenant or warranty that has been included in the indenture solely for the benefit of a series of debt securities other than that series), which default continues uncured for a period of 60 days after we receive written notice from the trustee or we and the trustee receive written notice from the holders of not less than 25% in principal amount of the outstanding debt securities of that series as provided in the indenture;

 

   

certain events of bankruptcy, insolvency or reorganization with respect to us; and

 

   

any other event of default provided with respect to debt securities of that series that is described in the applicable prospectus supplement. (Section 6.01)

No event of default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) necessarily constitutes an event of default with respect to any other series of debt securities. The occurrence of certain events of default or an acceleration under the indenture may constitute a default under certain of our other indebtedness outstanding from time to time, as may be provided in the terms governing that other indebtedness.

If an event of default with respect to debt securities of any series at the time outstanding occurs and is continuing, then the trustee or the holders of not less than 25% in principal amount of the outstanding debt securities of that series may, by a notice in writing to us (and to the trustee if given by the holders), declare to be due and payable immediately the principal of (or, if the debt securities of that series are discount securities, that portion of the principal amount as may be specified in the terms of that series) and accrued and unpaid interest, if any, on all debt securities of that series. In the case of an event of default resulting from certain events of bankruptcy, insolvency or reorganization, the principal (or such specified amount) of and accrued and unpaid interest, if any, on all outstanding debt securities will become and be immediately due and payable without any declaration or other act on the part of the trustee or any holder of outstanding debt securities. (Section 6.02)

 

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At any time after a declaration of acceleration with respect to debt securities of any series has been made, but before a judgment or decree based on the acceleration has been obtained, the holders of a majority in principal amount of the outstanding debt securities of that series may rescind and annul the acceleration if all events of default, other than the non-payment of accelerated principal and interest, if any, with respect to debt securities of that series, have been cured or waived (and certain other conditions have been satisfied) as provided in the indenture. (Section 6.02) We refer you to the prospectus supplement relating to any series of debt securities that are discount securities for the particular provisions relating to acceleration of a portion of the principal amount of such discount securities upon the occurrence of an event of default.

The indenture provides that the trustee will be under no obligation to exercise any of its rights or powers under the indenture unless the trustee receives reasonable security or indemnity satisfactory to it against any cost, expense or liability. (Section 7.02(f)) Subject to certain rights of the trustee, the holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or exercising any trust or power conferred on the trustee with respect to the debt securities of that series. (Section 6.05)

No holder of any debt security of any series will have any right to institute any proceeding, judicial or otherwise, with respect to the indenture or such debt securities for any remedy under the indenture, unless the trustee for such debt securities:

 

   

has failed to act for a period of 60 days after receiving notice of a continuing event of default with respect to such debt securities from such holder and a request to act by holders of not less than 25% in principal amount of the outstanding debt securities of that series;

 

   

has been offered indemnity satisfactory to it in its reasonable judgment; and

 

   

has not received from the holders of a majority in principal amount of the outstanding debt securities of that series a direction inconsistent with that request. (Section 6.06)

Notwithstanding the foregoing, the holder of any debt security will have an absolute and unconditional right to receive payment of the principal of and any interest on that debt security on or after the due dates expressed in that debt security and to institute suit for the enforcement of payment. (Section 6.07)

The indenture requires us, within 120 days after the end of our fiscal year, to furnish to the trustee an officers’ certificate as to compliance with the indenture. (Section 4.04) The indenture provides that the trustee may withhold notice to the holders of debt securities of any series of any default (except in payment of the principal of or interest on any debt securities of that series) with respect to debt securities of that series if it in good faith determines that withholding notice is in the interest of the holders of those debt securities. (Section 7.05)

Modification and Waiver

Generally, we may amend the indenture with the consent of, and our compliance with provisions of the indenture may be waived by, the holders of a majority in principal amount of the outstanding debt securities of each series affected by the amendment or waiver. However, we may not make any or amendment without the consent of, and our compliance with provisions of the indenture requires the waiver of, each holder of the affected debt securities if that amendment or waiver would:

 

   

reduce the principal of or change the fixed maturity of any debt security or reduce the amount of, or postpone the date fixed for, the payment of any sinking fund or analogous obligation with respect to any series of debt securities;

 

   

reduce the rate of or extend the time for payment of interest (including default interest) on any debt security;

 

   

reduce the principal amount of discount securities payable upon acceleration of maturity;

 

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waive a redemption payment, or change any of the other redemption provisions, with respect to any debt security, except as specifically set forth in the applicable resolution of our board of directors, the officers’ certificate or the supplemental indenture establishing the terms and conditions of such debt securities;

 

   

make the principal of or interest on any debt security payable in a currency other than that stated in the debt security;

 

   

waive a default in the payment of the principal of or interest on any debt security (except a rescission of acceleration of the debt securities of any series by the holders of a majority in aggregate principal amount of the then outstanding debt securities of that series and a waiver of the payment default that resulted from such acceleration);

 

   

make any change to certain provisions of the indenture relating to, among other things, the right of holders of debt securities to receive payment of the principal of and interest on those debt securities and to institute suit for the enforcement of any such payment, and certain waivers or amendments; or

 

   

reduce the amount of debt securities whose holders must consent to an amendment, supplement or waiver. (Section 9.02)

In addition, the indenture permits us and the trustee to make certain routine amendments to the indenture without the consent of any holder of debt securities. (Section 9.01)

Discharge

Our obligations under the indenture will be discharged as to a series of debt securities when all of the debt securities of that series have been delivered to the trustee for cancellation or, alternatively, when the following conditions are met:

 

   

all of the debt securities of that series that have not been delivered for cancellation have become due and payable, whether by reason of the mailing of a notice of redemption or otherwise, or will become due and payable within one year;

 

   

we have deposited with the trustee in trust for the benefit of the holders of such debt securities funds in an amount sufficient to pay all of our indebtedness owing on such debt securities; and

 

   

we have paid all other amounts due and payable by us under the indenture;

 

   

we have instructed the trustee to apply the deposited money toward the payment of such debt securities at maturity or on the date of redemption, as the case may be. (Section 8.01)

Legal Defeasance and Covenant Defeasance

The indenture provides that, upon the satisfaction of certain conditions specified in the indenture:

 

   

we may be discharged from any and all obligations in respect of the debt securities of any series (except for certain obligations to register the transfer or exchange of debt securities of such series, to replace stolen, lost or mutilated debt securities of such series, and to maintain paying agencies and certain provisions relating to the treatment of funds held by paying agents) (we refer to this below as “legal defeasance”); or

 

   

we may omit to comply with the covenants set forth in the indenture, as well as any additional covenants which may be set forth in the applicable prospectus supplement, and any omission to comply with those covenants will not constitute a default with respect to the debt securities of that series (we refer to this below as “covenant defeasance”). (Section 8.02)

 

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The conditions to the legal defeasance or covenant defeasance of a series of debt securities as described above include:

 

   

depositing with the trustee money and/or non-callable obligations guaranteed by the U.S. government (which we refer to below as “U.S. government obligations”) that, through the payment of interest and principal in accordance with their terms, will provide money in an amount sufficient in the opinion of a nationally recognized firm of independent public accountants to pay and discharge each installment of principal of and interest on, and any mandatory sinking fund payments in respect of, the debt securities of that series on the stated maturity of those payments in accordance with the terms of the indenture and those debt securities;

 

   

in the case of legal defeasance, delivering to the trustee an opinion of counsel confirming that we have received an Internal Revenue Service tax ruling or that there has been a change in applicable United States federal income tax law, in either case to the effect that, and based thereon, the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit and related legal defeasance and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been in the case if the deposit and related legal defeasance had not occurred;

 

   

in the case of covenant defeasance, delivering to the trustee an opinion of counsel to the effect that the holders of the debt securities of that series will not recognize income, gain or loss for United States federal income tax purposes as a result of the deposit and related covenant defeasance and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if the deposit and related covenant defeasance had not occurred;

 

   

there being no continuing default with respect to the debt securities of that series on the date of deposit of the money and/or U.S. government obligations referred to above (other than a default resulting from the borrowing of funds to be applied to that deposit);

 

   

the defeasance not resulting in a breach or violation of, or default under, any of our or our subsidiaries’ material agreements (other than any such default resulting solely from the borrowing of funds to be applied to the deposit referred to above and the grant of any lien on that deposit in favor of the trustee and/or the holders of the debt securities of that series); and

 

   

delivering to the trustee a certificate stating that the deposit was not made with the intent of preferring the holders of the debt securities of that series over any other of our creditors or with the intent of defeating, hindering, delaying or defrauding any other of our creditors. (Section 8.03)

Regarding the Trustee

The indenture provides that, except during the continuance of an event of default or any event, act or condition that, after notice or the passage of time or both, would be an event of default, the trustee will perform only such duties as are specifically set forth in the indenture. During the continuance of an event of default or any event, act or condition that, after notice or the passage of time or both, would be an event of default, the trustee will exercise such rights and powers vested in it under the indenture and use the same degree of care and skill in its exercise as a prudent person would exercise or use under the circumstances in the conduct of such person’s own affairs. (Section 7.01)

The indenture and provisions of the Trust Indenture Act that are incorporated by reference in the indenture contain limitations on the rights of the trustee, should it become one of our creditors, to obtain payment of claims in certain cases or to realize on certain property received by it in respect of any such claim as security or otherwise. The trustee is permitted to engage in other transactions with us or any of our affiliates; provided, however, that if it acquires any conflicting interest (as defined in the indenture or in the Trust Indenture Act), it must eliminate such conflict or resign. (Section 7.10)

 

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Governing Law

The indenture and the debt securities will be governed by and construed in accordance with the internal laws of the State of New York. (Section 10.08)

 

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DESCRIPTION OF UNITS

The following description, together with the additional information we include in any applicable prospectus supplement, summarizes the material terms and provisions of the units that we may offer under this prospectus. Units may be offered independently or together with common stock, preferred stock, debt securities and/or warrants offered by any prospectus supplement, and may be attached to or separate from those securities.

While the terms we have summarized below will generally apply to any future units that we may offer under this prospectus, we will describe the particular terms of any series of units that we may offer in more detail in the applicable prospectus supplement. The terms of any units offered under a prospectus supplement may differ from the terms described below.

We will incorporate by reference into the registration statement of which this prospectus is a part the form of unit agreement, including a form of unit certificate, if any, that describes the terms of the series of units we are offering before the issuance of the related series of units. The following summaries of material provisions of the units and the unit agreements are subject to, and qualified in their entirety by reference to, all the provisions of the unit agreement applicable to a particular series of units. We urge you to read the applicable prospectus supplements related to the units that we sell under this prospectus, as well as the complete unit agreements that contain the terms of the units.

General

We may issue units consisting of common stock, preferred stock, debt securities, warrants, or any combination thereof. Each unit will be issued so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. The unit agreement under which a unit is issued may provide that the securities included in the unit may not be held or transferred separately, at any time, or at any time before a specified date.

We will describe in the applicable prospectus supplement the terms of the series of units, including the following:

 

   

the designation and terms of the units and of the securities comprising the units, including whether and under what circumstances those securities may be held or transferred separately;

 

   

any provisions of the governing unit agreement that differ from those described below; and

 

   

any provisions for the issuance, payment, settlement, transfer, or exchange of the units or of the securities comprising the units.

The provisions described in this section, as well as those described under “Description of Common Stock,” “Description of Preferred Stock,” “Description of Warrants,” “Description of Debt Securities,” and “Description of Units” will apply to each unit and to any common stock, preferred stock, debt security or warrant included in each unit, respectively.

Issuance in Series

We may issue units in such amounts and in such numerous distinct series as we determine.

Enforceability of Rights by Holders of Units

Each unit agent will act solely as our agent under the applicable unit agreement and will not assume any obligation or relationship of agency or trust with any holder of any unit. A single bank or trust company may act as unit agent for more than one series of units. A unit agent will have no duty or responsibility in case of any default by us under the applicable unit agreement or unit, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a unit, without the consent of the related unit agent or the holder of any other unit, may enforce by appropriate legal action its rights as holder under any security included in the unit.

 

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Title

We, the unit agent, and any of their agents may treat the registered holder of any unit certificate as an absolute owner of the units evidenced by that certificate for any purposes and as the person entitled to exercise the rights attaching to the units so requested, despite any notice to the contrary.

 

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CERTAINANTI-TAKEOVER AND INDEMNIFICATION PROVISIONS OF

OUR ARTICLES OF INCORPORATION AND BY-LAWS AND VIRGINIA LAW

The following is a summary of certain anti-takeover and indemnification provisions of Virginia law and our Articles of Incorporation and Bylaws which affect us and our shareholders. The description below is intended as only a summary. You can access complete information by referring to VSCA and our Articles of Incorporation and Bylaws, and the following summary is qualified in its entirety by reference to such documents and the applicable provisions of the VSCA.

Board Composition, Removal of Directors and Filling Vacancies

In accordance with our Articles of Incorporation, our board is divided into three classes serving staggered three-year terms, with one class being elected each year. Our Articles of Incorporation also provide that, for so long as the board is classified, directors may be removed only for cause and then only by the affirmative vote of the holders of at least 75% of the shares of capital stock issued and outstanding and entitled to vote generally in the election of directors. Furthermore, unless and until filled by the shareholders, any vacancy on our board of directors, however occurring, including a vacancy resulting from an increase in the size of our board, may be filled solely (i) by the affirmative vote of a majority of our directors then in office even if less than a quorum, or (ii) at an annual meeting of shareholders by the shareholders entitled to vote on the election of directors. Any amendment to the provisions of the Articles of Incorporation with respect to these matters must be approved by at least 75% of the outstanding shares of capital stock entitled to vote on the amendment.

Blank Check Preferred Stock

We have shares of preferred stock available for future issuance without shareholder approval, except to the extent holders of preferred stock have a consent right under the terms of their preferred stock. The existence of authorized but unissued shares of preferred stock may enable our board of directors to render more difficult or to discourage an attempt to obtain control of us by means of a merger, tender offer, proxy contest or otherwise. For example, if in the due exercise of its fiduciary obligations, our board of directors were to determine that a takeover proposal is not in the best interests of us or our shareholders, our board of directors could cause shares of preferred stock to be issued without shareholder approval in one or more private offerings or other transactions that might dilute the voting or other rights of the proposed acquirer or insurgent shareholder or shareholder group. In this regard, our Articles of Incorporation grant our board of directors broad power to establish the rights and preferences of authorized and unissued shares of preferred stock. The issuance of shares of preferred stock could decrease the amount of earnings and assets available for distribution to holders of shares of common stock. The issuance may also adversely affect the rights and powers, including voting rights, of these holders and may have the effect of delaying, deterring or preventing a change in control of us.

Affiliated Transactions Statute

Virginia law contains provisions governing affiliated transactions. In general, these provisions prohibit a Virginia corporation from engaging in affiliated transactions with any holder of more than 10% of any class of its outstanding voting shares, or an interested shareholder, for a period of three years following the date that such person became an interested shareholder unless:

 

   

the disinterested members of the board of directors of the corporation and the holders of two-thirds of the voting shares, other than the shares beneficially owned by the interested shareholder, approve the affiliated transaction; or

 

   

before the date the person became an interested shareholder, the board of directors approved the transaction that resulted in the shareholder becoming an interested shareholder.

After three years, any such transaction must be at a “fair price,” as statutorily defined or must be approved by the holders of two-thirds of the voting shares, other than the shares beneficially owned by the interested shareholder.

 

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Control Share Acquisitions Statute

Virginia law also contains provisions relating to control share acquisitions, which are transactions causing the voting strength of any person acquiring beneficial ownership of shares of a Virginia public corporation to meet or exceed certain threshold percentages (20%, 33 1/3% or 50%) of the total votes entitled to be cast for the election of directors. Shares acquired in a control share acquisition have no voting rights unless:

 

   

the voting rights are granted by a majority vote of all outstanding shares other than those held by the acquiring person or any officer or employee director of the corporation; or

 

   

The acquiring person may require that a special meeting of the shareholders be held to consider the grant of voting rights to the shares acquired in the control share acquisition.

As permitted by Virginia law, our Articles of Incorporation contain a provision opting out of the control share acquisition provisions of Virginia law.

Indemnification of Directors and Officers

Our Articles of Incorporation provide that no director or officer shall be liable to Insmed or our shareholders for monetary damages except for liability resulting from willful misconduct or a knowing violation of the criminal law or of any federal or state securities laws.

Our Articles of Incorporation require us to indemnify any director, officer or employee who is or was a party to a proceeding due to his or her status as a director or officer of Insmed or who is or was serving at our request as a director, officer, or employee of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise. This indemnification covers all reasonable expenses incurred by any such director, officer, or employee. Such indemnification will be made unless the board of directors, by a majority vote of a quorum of disinterested directors or, under certain circumstances, independent legal counsel appointed by the board of directors, determines that the director or officer seeking indemnification was guilty of willful misconduct or a knowing violation of the criminal law.

Insofar as indemnification for liabilities under the Securities Act may be permitted to directors, officers and controlling persons of Insmed pursuant to the foregoing provisions or otherwise, we have been informed that, in the opinion of the SEC, indemnification for liabilities under the Securities Act is against public policy and is unenforceable.

 

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PLAN OF DISTRIBUTION

We may sell the securities being offered hereby in one or more of the following ways from time to time:

 

   

through agents to the public or to investors;

 

   

to one or more underwriters or dealers for resale to the public or to investors;

 

   

in “at the market offerings,” within the meaning of Rule 415(a)(4) of the Securities Act of 1933, as amended, to or through a market maker or into an existing trading market, or an exchange or otherwise;

 

   

directly to investors in privately negotiated transactions; or

 

   

through a combination of these methods of sale.

The securities that we distribute by any of these methods may be sold, in one or more transactions, at:

 

   

a fixed price or prices, which may be changed;

 

   

market prices prevailing at the time of sale;

 

   

prices related to prevailing market prices; or

 

   

negotiated prices.

We will set forth in a prospectus supplement the terms of the offering of our securities, including:

 

   

the name or names of any agents or underwriters;

 

   

the purchase price of our securities being offered and the proceeds we will receive from the sale;

 

   

any over-allotment options under which underwriters may purchase additional securities from us;

 

   

any agency fees or underwriting discounts and commissions and other items constituting agents’ or underwriters’ compensation;

 

   

the public offering price;

 

   

any discounts or concessions allowed or reallowed or paid to dealers; and

 

   

any securities exchanges on which such common stock may be listed.

Underwriters

Underwriters, dealers and agents that participate in the distribution of the securities may be underwriters as defined in the Securities Act and any discounts or commissions they receive from us and any profit on their resale of the securities may be treated as underwriting discounts and commissions under the Securities Act. We will identify in the applicable prospectus supplement any underwriters, dealers or agents and will describe their compensation. In no event will the aggregate value of compensation received or to be received by Financial Industry Regulatory Authority members or independent broker-dealers exceed 8% for the sale of the securities registered hereunder. We may have agreements with the underwriters, dealers and agents to indemnify them against specified civil liabilities, including liabilities under the Securities Act. Underwriters, dealers and agents may engage in transactions with or perform services for us or our subsidiaries in the ordinary course of their businesses.

 

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If we use underwriters for a sale of securities, the underwriters will acquire the securities for their own account. The underwriters may resell the securities in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. The obligations of the underwriters to purchase the securities will be subject to the conditions set forth in the applicable underwriting agreement. The underwriters will be obligated to purchase all the securities offered if they purchase any of the securities offered. We may change from time to time any initial public offering price and any discounts or concessions the underwriters allow or reallow or pay to dealers. We may use underwriters with whom we have a material relationship. We will describe in the prospectus supplement naming the underwriters the nature of any such relationship.

If indicated in the applicable prospectus supplement, we will authorize underwriters or other persons acting as our agents to solicit offers by particular institutions to purchase securities from us at the public offering price set forth in such prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on the date or dates stated in such prospectus supplement. Each delayed delivery contract will be for an amount no less than, and the aggregate principal amounts of securities sold under delayed delivery contracts shall be not less nor more than, the respective amounts stated in the applicable prospectus supplement. Institutions with which such contracts, when authorized, may be made include commercial and savings banks, insurance companies, pension funds, investment companies, educational and charitable institutions and others, but will in all cases be subject to our approval. The obligations of any purchaser under any such contract will be subject to the conditions that (a) the purchase of the securities shall not at the time of delivery be prohibited under the laws of any jurisdiction in the United States to which the purchaser is subject, and (b) if the securities are being sold to underwriters, we shall have sold to the underwriters the total principal amount of the securities less the principal amount thereof covered by the contracts. The underwriters and such other agents will not have any responsibility in respect of the validity or performance of such contracts.

Agents

We may designate agents who agree to use their reasonable efforts to solicit purchases for the period of their appointment or to sell securities on a continuing basis.

Direct Sales

We may also sell securities directly to one or more purchasers without using underwriters or agents.

Trading Markets and Listing of Securities

Unless otherwise specified in the applicable prospectus supplement, each class or series of securities will be a new issue with no established trading market, other than our common stock, which is listed on the Nasdaq Capital Market. We may elect to list any other class or series of securities on any exchange, but we are not obligated to do so. It is possible that one or more underwriters may make a market in a class or series of securities, but the underwriters will not be obligated to do so and may discontinue any market making at any time without notice. We cannot give any assurance as to the liquidity of the trading market for any of the securities.

Stabilization Activities

In connection with an offering, an underwriter may purchase and sell securities in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Shorts sales involve the sale by the underwriters of a greater number of securities than they are required to purchase in the offering. “Covered” short sales are sales made in an amount not greater than the underwriters’ option to purchase additional securities from us, if any, in the offering. If the underwriters have an over-allotment option to purchase additional securities from us, the underwriters may close out any covered short position by either exercising their over-allotment option or purchasing securities in the open market. In determining the source of securities to close out the covered short position, the underwriters may consider, among other things, the price of securities available for purchase in the open market as compared to the price at which they may purchase securities through the over-allotment option. “Naked” short sales are any sales in excess of such option or where the underwriters do not have an over-allotment option. The underwriters must close out any naked short position by purchasing securities in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the securities in the open market after pricing that could adversely affect investors who purchase in the offering.

 

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Accordingly, to cover these short sales positions or to otherwise stabilize or maintain the price of the securities, the underwriters may bid for or purchase securities in the open market and may impose penalty bids. If penalty bids are imposed, selling concessions allowed to syndicate members or other broker-dealers participating in the offering are reclaimed if securities previously distributed in the offering are repurchased, whether in connection with stabilization transactions or otherwise. The effect of these transactions may be to stabilize or maintain the market price of the securities at a level above that which might otherwise prevail in the open market. The impositions of a penalty bid may also effect the price of the securities to the extent that it discourages resale of the securities. The magnitude or effect of any stabilization or other transactions is uncertain. These transactions may be effected on the Nasdaq Capital Market or otherwise and, if commenced, may be discontinued at any time.

EXPERTS

The consolidated financial statements of Insmed Incorporated appearing in Insmed’s Annual Report (Form 10-K) for the year ended December 31, 2011 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their report thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

LEGAL MATTERS

Certain legal matters, including the legality of the securities offered, will be passed upon for us by Greenberg Traurig, LLP. If the securities are distributed in an underwritten offering, certain legal matters will be passed upon for the underwriters by counsel identified in the applicable prospectus supplement.

WHERE YOU CAN FIND MORE INFORMATION

We file reports, proxy statements and other documents with the SEC. You may read and copy any document we file at the SEC’s public reference room at 100 F Street, N.E., Room 1580, Washington, DC 20549. You should call 1-800-SEC-0330 for more information on the operation of the public reference room. You can review our electronically filed reports, proxy and information statements on SEC’s web site at www.sec.gov or on our web site at www.insmed.com . Information included on our web site is not a part of this prospectus or any prospectus supplement.

This prospectus is part of a registration statement that we filed with the SEC. The registration statement contains more information than this prospectus regarding us and our common stock, including certain exhibits and schedules. You can obtain a copy of the registration statement from the SEC at the address listed above or from the SEC’s Internet site.

 

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INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The SEC allows us to “incorporate” into this prospectus information that we file with the SEC in other documents. This means that we can disclose important information to you by referring to other documents that contain that information. Any information that we incorporate by reference is considered part of this prospectus. The documents and reports that we list below are incorporated by reference into this prospectus. In addition, all documents and reports which we file pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus are incorporated by reference in this prospectus as of the respective filing dates of these documents and reports. Statements contained in documents that we file with the SEC and that are incorporated by reference in this prospectus will automatically update and supersede information contained in this prospectus, including information in previously filed documents or reports that have been incorporated by reference in this prospectus, to the extent the new information differs from or is inconsistent with the old information.

We have filed the following documents with the SEC. These documents are incorporated herein by reference as of their respective dates of filing:

 

  (1) Our Annual Report on Form 10-K for the fiscal year ended December 31, 2011;

 

  (2) Our Quarterly Report on Form 10-Q for the three months ended March 31, 2012;

 

  (3) Our Current Reports on Form 8-K filed with the SEC on January 23, 2012, February 13, 2012, March 9, 2012, April 17, 2012, May 7, 2012, May 17, 2012, May 23, 2012, May 25, 2012, May 30, 2012 and June 14, 2012;

 

  (4) All of our filings pursuant to the Exchange Act after the date of filing the initial registration statement and prior to the effectiveness of the registration statement; and

 

  (5) The description of our common stock contained in our Registration Statement on Form 8-A filed on June 1, 2000, including any amendments or reports filed for the purpose of updating that description.

You may request a copy of these documents, which will be provided to you at no cost, by contacting:

Insmed Incorporated

9 Deer Park Drive, Suite C

Monmouth Junction, NJ 08852

Attention: Andrea Holtzman Drucker, Corporate Secretary

(732) 997-4600

You should rely only on the information contained in this prospectus, including information incorporated by reference as described above, or any prospectus supplement that we have specifically referred you to. We have not authorized anyone else to provide you with different information. 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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INSMED INCORPORATED

 

LOGO

6,304,102 Shares of Common Stock

Prospectus Supplement

September 28, 2012