Document:

EX-4.1

 Exhibit 4.1 

[Form of Warrant Agreement] 

WARRANT AGREEMENT 

WARRANT AGREEMENT made as of November 13, 2014, between American Superconductor Corporation, a Delaware corporation (the
“Company”), and American Stock Transfer & Trust Company, LLC, a New York limited liability trust company (“Warrant Agent”). 

WHEREAS, the Company has sold units (“Units”), each consisting of one share of common stock (“Common Stock”)
of the Company and 0.9 of a warrant, each whole warrant evidencing the right of the holder thereof to purchase one share of Common Stock for $1.10, subject to adjustment as described herein (the “Warrants”), pursuant to an
Underwriting Agreement between the Company and Cowen and Company, LLC, as Representative of the Underwriters (the “Underwriting Agreement”), dated November 7, 2014; and 

WHEREAS, the Units and the shares issuable upon exercise of the Warrants (“Warrant Shares”) were issued by the Company in a
public offering pursuant to an effective shelf registration statement on Form S-3, Registration No. 333-198851 (“Registration Statement”) filed with the Securities and Exchange Commission (the “Commission”)
under the Securities Act of 1933, as amended (“Act”); and 
 WHEREAS, the Company desires the Warrant Agent to act on
behalf of the Company, and the Warrant Agent is willing to so act, in connection with the issuance, registration, transfer, exchange and exercise of the Warrants; and 

WHEREAS, the Company desires to provide for the form and provisions of the Warrants, the terms upon which they shall be issued and exercised,
and the respective rights, limitation of rights, and immunities of the Company, the Warrant Agent, and the holders of the Warrants; and 

WHEREAS, all acts and things have been done and performed which are necessary to make the Warrants, when executed on behalf of the Company,
the valid, binding and legal obligations of the Company, and to authorize the execution and delivery of this Warrant Agreement. 
 NOW,
THEREFORE, in consideration of the mutual agreements herein contained, the parties hereto agree as follows: 
 1. Appointment of Warrant
Agent. The Company hereby appoints the Warrant Agent to act as agent for the Company for the Warrants, and the Warrant Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in
this Warrant Agreement. 
 2. Warrant. 

2.1. Form of Warrant. Each Warrant shall be issued in registered form only, shall be in substantially the form of Exhibit A
hereto (the “Form of Warrant Certificate”), the 

 
provisions of which are incorporated herein, and shall be signed by, or bear the facsimile signature of, the Chief Executive Officer or Chief Financial Officer of the Company. In the event the
person whose facsimile signature has been placed upon any Warrant shall have ceased to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect as if he or she had not ceased
to be such at the date of issuance. 
 2.2. [Reserved.] 

2.3. Registration. 

2.3.1. Warrant Register. The Warrant Agent shall maintain books (“Warrant Register”), for the
registration of original issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and register the Warrants in the names of the respective holders thereof in such
denominations and otherwise in accordance with instructions delivered to the Warrant Agent by the Company. The Warrants may be represented by definitive warrant certificates in physical form (“Definitive Warrant Certificates”) or by
one or more book-entry warrant certificates (“Book-Entry Warrant Certificates”) deposited with the Depository Trust Company (the “Depository”) and registered in the name of Cede & Co., a nominee of the
Depository. Definitive Warrant Certificates shall be in substantially the form annexed hereto as Exhibit A, the terms of which are incorporated into the Book-Entry Warrant Certificates and any Warrant statement relating thereto. Ownership of
beneficial interests in the Book-Entry Warrant Certificates shall be shown on, and the transfer of such ownership shall be effected through, records maintained (i) by the Depository or its nominee for each Book-Entry Warrant Certificate;
(ii) by institutions that have accounts with the Depository (each such institution, with respect to a Warrant in its account, a “Participant”); or (iii) directly on the book-entry records of the Warrant Agent with respect
only to owners of beneficial interests that request such direct registration. 
 If the Depository subsequently ceases to
make its book-entry settlement system available for the Warrants, the Company may instruct the Warrant Agent regarding making other arrangements for book-entry settlement. In the event that the Company does not make alternative arrangements for
book-entry settlement, or it is no longer necessary to have the Warrants available in, book-entry form, the Warrant Agent shall provide written instructions to the Depository to deliver to the Warrant Agent for cancellation each Book-Entry Warrant
Certificate, and the Company shall instruct the Warrant Agent to deliver to the Depository Definitive Warrant Certificates in physical form evidencing such Warrants. 

2.3.2. Beneficial Owner; Registered Holder. The term “beneficial owner” shall mean any person in whose name
ownership of a beneficial interest in a Warrant evidenced by (a) a Book-Entry Warrant Certificate is recorded in the records maintained 

  
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by (i) by the Depository or its nominee for each Book-Entry Warrant Certificate; (ii) by a Participant; or (iii) directly on the book-entry records of the Warrant Agent with
respect only to owners of beneficial interests that request such direct registration or (b) a Definitive Warrant Certificate is recorded in the book-entry records of the Warrant Agent. Prior to due presentment for registration of transfer of
any Warrant, the Company and the Warrant Agent may deem and treat the person in whose name such Warrant shall be registered upon the Warrant Register (“Registered Holder”), as the absolute owner of such Warrant and of each Warrant
represented thereby (notwithstanding any notation of ownership or other writing on the warrant certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any exercise thereof, and for all other purposes, and neither
the Company nor the Warrant Agent shall be affected by any notice to the contrary. 
 2.3.3. Detachability of
Warrants. The securities comprising the Units will be issued separately and will be separately transferable immediately upon issuance. 

2.3.4. Uncertificated Warrants. Notwithstanding the foregoing and anything else herein to the contrary, the Warrants may
be issued in uncertificated form if so specified by the Company. 
 3. Terms and Exercise of Warrants. 

3.1. Exercise Price. Each Warrant shall entitle the Registered Holder thereof, subject to the provisions of such Warrant and of this
Warrant Agreement, to purchase from the Company the number of shares of Common Stock stated therein, at the price per whole share stated therein, subject to the adjustments provided in Sections 1, 2 and 3 of the Form of Warrant Certificate. 

3.2. Duration of Warrants. A Warrant may be exercised only during the period commencing on the Exercisability Date and terminating at
5:00 P.M., New York time on the Expiration Date. Each Warrant not exercised on or before 5:00 P.M., New York time on the Expiration Date shall become void, and all rights thereunder and all rights in respect thereof under this Warrant Agreement
shall cease immediately after 5:00 P.M., New York time on the Expiration Date. 
 3.3. Manner and Exercise and Issuance of Shares.
Except as provided for in Section 3.4, Warrants may be exercised in the manner set forth in Section 1 of the Form of Warrant Certificate, in accordance with the terms and limitations set forth therein. Upon any such exercise, the Warrant
Shares shall be issued in the manner set forth in Section 1 of the Form of Warrant Certificate, and subject to the restrictions set forth therein, which terms are hereby incorporated into the terms of the Book-Entry Warrant Certificates (and
any Warrant statement relating thereto). 

  
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 3.4. Exercise of Warrants with Warrant Agent. Notwithstanding Section 3.3, so long as
the Warrant Agent maintains the Warrant Register, Warrants shall be exercised in the following manner: 
 3.4.1. Exercise
and Payment. A Registered Holder may exercise a Warrant by delivering, not later than 5:00 P.M., New York time, on any Business Day after the Exercisability Date but not after 5:00 P.M., New York time on the Expiration Date (the
“Exercise Date”) to the Warrant Agent at its corporate trust department (i) the Definitive Warrant Certificate evidencing the Warrants to be exercised, or, in the case of a Book-Entry Warrant Certificate, the Warrants to be
exercised free on the records of the Depository (the “Book-Entry Warrants”) to an account of the Warrant Agent at the Depository designated for such purpose in writing by the Warrant Agent to the Depository from time to time,
(ii) an Exercise Notice, properly completed and executed by the Registered Holder substantially in the form attached as Exhibit A to the Form of Warrant Certificate or, in the case of a Book-Entry Warrant Certificate, properly delivered by the
Participant in accordance with the Depository’s procedures, and (iii), except as provided in Section 3.4.6, the Aggregate Exercise Price for each Warrant to be exercised in lawful money of the United States of America by certified or
official bank check or by bank wire transfer in immediately available funds. In the event of a “cashless exercise,” as provided in Section 3.4.6, the Definitive Warrant Certificate or Book-Entry Warrants, the Exercise Notice, and the
Aggregate Exercise Price must be delivered to the Company at the address specified in Section 7.2. 
 If any of
(A) the Definitive Warrant Certificate or the Book-Entry Warrants, (B) the Exercise Notice, or (C) the Exercise Price therefor, is received by the Warrant Agent after 5:00 P.M., Eastern time, on the specified Exercise Date, the
Warrants will be deemed to be received and exercised on the Business Day next succeeding the Exercise Date. If the date specified as the Exercise Date is not a Business Day, the Warrants will be deemed to be received and exercised on the next
succeeding day that is a Business Day. If the Warrants are received or deemed to be received after the Expiration Date, the exercise thereof will be null and void and any funds delivered to the Warrant Agent will be returned to the Registered Holder
or Participant, as the case may be, as soon as practicable. In no event will interest accrue on funds deposited with the Warrant Agent in respect of an exercise or attempted exercise of Warrants. The validity of any exercise of Warrants will be
determined by the Company in its sole discretion and such determination will be final and binding upon the Registered Holder and the Warrant Agent. Neither the Company nor the Warrant Agent shall have any obligation to inform a Registered Holder of
the invalidity of any exercise of Warrants. 
 The Warrant Agent shall deposit all funds received by it in payment of the
Warrant Price in the account of the Company maintained with the Warrant Agent for such purpose and shall advise the Company at the end of each day on which funds for the exercise of the Warrants are received of the amount so deposited to its
account. The Warrant Agent shall promptly confirm such advice to the Company in writing. 
 3.4.2. Issuance of
Certificates. The Warrant Agent shall, within a reasonable time, advise the Company and the transfer agent and registrar in respect of (a) the Warrant Shares issuable upon such exercise as to the number of Warrants exercised in accordance
with the terms and conditions of this Agreement, (b) the instructions of each Registered Holder or Participant, as the case may be, with respect to delivery of the 

  
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Warrant Shares issuable upon such exercise, and the delivery of Definitive Warrant Certificates, as appropriate, evidencing the balance, if any, of the Warrants remaining after such exercise (in
accordance with Section 1(a) of the Form of Warrant Certificate), (c) in case of a Book-Entry Warrant Certificate, the notation that shall be made to the records maintained by the Depository, its nominee for each Book-Entry Warrant
Certificate, a Participant, or the Warrant Agent, as appropriate, evidencing the balance, if any, of the Warrants remaining after such exercise and (d) such other information as the Company or such transfer agent and registrar shall reasonably
require. 
 The Company shall, by 5:00 P.M., Eastern time, on the third Business Day next succeeding the Exercise Date of any
Warrant and the clearance of the funds, if any, in payment of the Warrant Price (the “Warrant Shares Delivery Date”), execute, issue and deliver to the Warrant Agent, the Warrant Shares to which such Registered Holder or
Participant, as the case may be, is entitled, in fully registered form, registered in such name or names as may be directed by such Registered Holder or the Participant, as the case may be. Upon receipt of such Warrant Shares, the Warrant Agent
shall, by 5:00 P.M., Eastern time, on the third Business Day next succeeding such Exercise Date, transmit such Warrant Shares to or upon the order of the Registered Holder or Participant, as the case may be. 

In lieu of delivering physical certificates representing the Warrant Shares issuable upon exercise, provided the Company’s
transfer agent is participating in the Depository’s Fast Automated Securities Transfer program, the Company shall use its reasonable best efforts to cause its transfer agent to electronically transmit the Warrant Shares issuable upon exercise
to the Registered Holder or the Participant by crediting the account of the Registered Holder’s prime broker with the Depository or of the Participant through its Deposit Withdrawal Agent Commission system. The time periods for delivery
described in the immediately preceding paragraph shall apply to the electronic transmittals described herein. 
 If the
Warrant Agent fails to comply with the preceding paragraphs in this Section 3.4.2 by the Warrant Shares Delivery Date, then the Registered Holder will have the right to rescind its exercise. 

If the Company shall fail for any reason or for no reason to execute, issue and deliver to the Warrant Agent the Warrant Shares
by the Warrant Shares Delivery Date, then the Company shall, before the Warrant Shares Delivery Date, in the Holder’s discretion, either (i) pay cash to the Holder in an amount equal to the Buy-In Price, at which point the Company’s
obligation to deliver such Warrant Shares shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such Warrant Shares and pay cash to the Holder in an amount equal to the excess
(if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) the Closing Bid Price on the date of exercise. 

3.4.3. No Fractional Exercise. No fractional shares of Common Stock will be issued upon the exercise of the Warrant, but
rather the Company will make a cash 

  
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payment to the Holder in lieu thereof based on the Closing Sale Price on the Exercise Date; provided, however, that, in lieu of such cash payment, the number of shares of Common Stock to
be issued may, at the Company’s option, be rounded up to the nearest whole number. If fewer than all of the Warrants evidenced by a Definitive Warrant Certificate are exercised, a new Definitive Warrant Certificate for the number of unexercised
Warrants remaining shall be executed by the Company and delivered to the holder of this Warrant Certificate at the address specified on the books of the Warrant Agent or as otherwise specified by such Registered Holder. If fewer than all the
Warrants evidenced by a Book-Entry Warrant Certificate are exercised, a notation shall be made to the records maintained by the Depository, its nominee for each Book-Entry Warrant Certificate, a Participant, of the Warrant Agent, as appropriate,
evidencing the balance of the Warrants remaining after such exercise. 
 3.4.4. Taxes. The Company shall pay any and
all taxes which may be payable with respect to the issuance and delivery of Warrant Shares upon exercise of the Warrant (except as set forth in Section 15 of the Form of Warrant Certificate). 

3.4.5. Date of Issuance. At the Close of Business on the date of delivery of a valid Exercise Notice, the Holder shall
be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this Warrant has been exercised, irrespective of the date such Warrant Shares are credited to the Holder’s DTC account or the
date of delivery of the certificates evidencing such Warrant Shares, as the case may be. 
 3.4.6. Cashless Exercise.
If an effective registration statement is available for the issuance of the Warrant Shares, the Warrants may only be exercised through a Cash Exercise. Notwithstanding anything contained herein to the contrary, in the event an effective registration
statement is not then available for the issuance of the Warrant Shares, the Holder may, in its sole discretion, exercise this Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company upon
such exercise in payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number” of shares of Common Stock determined in the manner set forth in Section 1(e) of the Form of Warrant Certificate and
subject to Section 1(f) to the Form of Warrant Certificate. 
 3.4.7. Disputes. In the case of a dispute as to
the determination of the Exercise Price or the arithmetic calculation of the Warrant Shares, the Company shall promptly issue to the Holder the number of Warrant Shares that are not disputed. 

3.4.8. Beneficial Ownership Limitation. The Warrant Agent shall not effect the exercise of a Warrant, and the Holder
shall not have the right to exercise a Warrant, to the extent that after giving effect to such exercise, the Holder (together with the Holder’s affiliates) would beneficially own in excess of the Maximum Percentage, as set forth in
Section 1(h) of the Form of Warrant Certificate. 

  
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 4. Adjustments. 

4.1. Adjustment of Exercise Price and Number of Warrant Shares; Fundamental Transactions. The Exercise Price and the number of Warrant
Shares issuable upon exercise shall be subject to adjustment from time to time as provided in Sections 2 and 3 of the Form of Warrant Certificate. 

4.2. Notices. 

4.2.1. Notices of Changes. Whenever an adjustment is proposed or effected that requires notice by the Company, as
provided in Section 8 of the Form of Warrant Certificate, the Company shall deliver to the Warrant Agent the notices or statements required by Section 8 of the Form of Warrant Certificate, and shall cause a copy of such notices or
statements to be sent or communicated to each Holder pursuant to Section 8 of the Form of Warrant Certificate. 
 4.2.2.
Form of Warrant Certificate. The Form of Warrant Certificate need not be changed because of any adjustment pursuant to this Section 4, and Warrants issued after such adjustment may state the same Exercise Price and the same number of
shares as is stated in the Warrants initially issued pursuant to this Warrant Agreement. However, the Company may at any time in its sole discretion make any change in the Form of Warrant Certificate that the Company may deem appropriate and that
does not affect the substance thereof, and any Warrant thereafter issued, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as so changed. 

5. Transfer and Exchange of Warrants. 

5.1. Registration of Transfer. The Warrant Agent shall register the transfer, from time to time, of any outstanding Warrant upon the
Warrant Register, upon surrender of such Warrant for transfer, properly endorsed with signatures properly guaranteed and accompanied by appropriate instructions for transfer. Upon any such transfer, a new Warrant representing an equal aggregate
number of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. The Warrants so cancelled shall be delivered by the Warrant Agent to the Company from time to time upon request. 

5.2. Procedure for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a written request for
exchange or transfer, and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the Registered Holder of the Warrants so surrendered, representing an equal aggregate number of Warrants; provided,
however, that except as otherwise provided herein or in any Book-Entry Warrant Certificate, each Book-Entry Warrant Certificate may be transferred only in whole and only to the Depository, to another nominee of the Depository, to a successor
depository, or to a nominee of a successor depository; provided further, however, that in the event that a Warrant surrendered for transfer bears a restrictive legend, the Warrant Agent shall not cancel such Warrant and issue new Warrants in
exchange therefor until the Warrant Agent has received an 

  
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opinion of counsel for the Company stating that such transfer may be made and indicating whether the new Warrants must also bear a restrictive legend. Upon any such registration of transfer, the
Company shall execute, and the Warrant Agent shall countersign and deliver, in the name of the designated transferee a new Definitive Warrant Certificate or Book-Entry Warrant Certificate (or Definitive Warrant Certificates or Book-Entry Warrant
Certificates) of any authorized denomination evidencing in the aggregate a like number of unexercised Warrants. 
 5.3. Fractional
Warrants. The Warrant Agent shall not be required to effect any registration of transfer or exchange which will result in the issuance of a Definitive Warrant Certificate or Book-Entry Warrant Certificate for a fraction of a Warrant. 

5.4. Service Charges. No service charge shall be made for any exchange or registration of transfer of Warrants. 

5.5. Warrant Execution. The Warrant Agent is hereby authorized to deliver, in accordance with the terms of this Warrant Agreement, the
Warrants required to be issued pursuant to the provisions of this Section 5, and the Company, whenever required by the Warrant Agent, will supply the Warrant Agent with Warrants duly executed on behalf of the Company for such purpose. 

6. Concerning the Warrant Agent and Other Matters. 

6.1. Payment of Taxes. The Company will from time to time promptly pay all taxes and charges that may be imposed upon the Company or
the Warrant Agent in respect of the issuance or delivery of shares of Common Stock upon the exercise of Warrants, but the Company shall not be obligated to pay any transfer taxes in respect of the Warrants or such shares. 

6.2. Resignation, Consolidation, or Merger of Warrant Agent. 

6.2.1. Appointment of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed, may resign
its duties and be discharged from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office of the Warrant Agent becomes vacant by resignation or incapacity to act or
otherwise, the Company shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after it has been notified in writing of such
resignation or incapacity by the Warrant Agent or by the holder of the Warrant (who shall, with such notice, submit his Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme Court of the State of New York
for the County of New York for the appointment of a successor Warrant Agent at the Company’s cost. Any successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation organized and existing under the laws of
the State of New York, in good standing and having its principal office in the Borough of Manhattan, City and State of New York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination by federal
or state authority. After appointment, any 

  
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successor Warrant Agent shall be vested with all the authority, powers, rights, immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if originally named as
Warrant Agent hereunder, without any further act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the expense of the Company, an instrument transferring to such successor
Warrant Agent all the authority, powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute, acknowledge, and deliver any and all instruments in writing for more
fully and effectually vesting in and confirming to such successor Warrant Agent all such authority, powers, rights, immunities, duties, and obligations. 

6.2.2. Notice of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the Company shall
give notice thereof to the predecessor Warrant Agent and the transfer agent for the Common Stock not later than the effective date of any such appointment. 

6.2.3. Merger or Consolidation of Warrant Agent. Any corporation into which the Warrant Agent may be merged or converted
or with which it may be consolidated or any corporation resulting from any merger, conversion, or consolidation to which the Warrant Agent shall be a party, or any corporation succeeding to the business of the Warrant Agent, shall be the successor
Warrant Agent under this Warrant Agreement without any further act. 
 6.3. Fees and Expenses of Warrant Agent. 

6.3.1. Remuneration. The Company agrees to pay the Warrant Agent the remuneration set forth in that certain Fee Proposal
delivered to the Company on November 4, 2014 for its services as such Warrant Agent hereunder and will reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of its duties
hereunder. 
 6.3.2. Further Assurances. The Company agrees to perform, execute, acknowledge, and deliver or cause to
be performed, executed, acknowledged, and delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the carrying out or performing of the provisions of this Warrant Agreement. 

6.4. Liability of Warrant Agent. 

6.4.1. Reliance on Company Statement. Whenever in the performance of its duties under this Warrant Agreement, the
Warrant Agent shall deem it necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other evidence in respect thereof be herein
specifically prescribed) may be deemed to be conclusively proved and established by a statement signed by the President or Chairman of the Board of the Company and delivered to the Warrant Agent. The Warrant Agent may rely upon such statement for
any action taken or suffered in good faith by it pursuant to the provisions of this Warrant Agreement. 

  
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 6.4.2. Indemnity. The Warrant Agent shall be liable hereunder only for its
own gross negligence, willful misconduct or bad faith. The Company agrees to indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, costs and reasonable counsel fees, for anything done or omitted by
the Warrant Agent in the execution of this Warrant Agreement except as a result of the Warrant Agent’s gross negligence, willful misconduct, or bad faith. 

6.4.3. Exclusions. The Warrant Agent shall have no responsibility with respect to the validity of this Warrant Agreement
or with respect to the validity or execution of any Warrant; nor shall it be responsible for any breach by the Company of any covenant or condition contained in this Warrant Agreement or in any Warrant; nor shall it be responsible to make
calculations under Section 3 or any adjustments required under the provisions of Section 4 hereof or responsible for the manner, method, or amount of any such adjustment or the ascertaining of the existence of facts that would require any
such adjustment; nor shall it by any act hereunder be deemed to make any representation or warranty as to the authorization or reservation of any shares of Common Stock to be issued pursuant to this Warrant Agreement or any Warrant or as to whether
any shares of Common Stock will when issued be valid and fully paid and nonassessable. 
 6.5. Acceptance of Agency. The Warrant
Agent hereby accepts the agency established by this Warrant Agreement and agrees to perform the same upon the terms and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and
concurrently account for, and pay to the Company, all moneys received by the Warrant Agent for the purchase of shares of Common Stock through the exercise of Warrants. 

6.6. Limitation on Liability of Warrant Agent. In no event shall the Warrant Agent have any liability for any incidental, special,
statutory, indirect or consequential damages, or for any loss of profits, revenue, data or cost of cover. 
 7. Miscellaneous
Provisions. 
 7.1. Successors. All the covenants and provisions of this Warrant Agreement by or for the benefit of the Company
or the Warrant Agent shall bind and inure to the benefit of their respective successors and assigns. 

  
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 7.2. Notices. Any notice, statement or demand authorized by this Warrant Agreement to be
given or made by the Warrant Agent or by the holder of any Warrant to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five days after
deposit of such notice, postage prepaid, addressed (until another address is filed in writing by the Company with the Warrant Agent), as follows: 

American Superconductor Corporation 

64 Jackson Road 
 Devens, MA 01434

 Attention: David Henry 

Telephone: (978) 842-3000 

Email: David.Henry@amsc.com 
 Any
notice, statement or demand authorized by this Warrant Agreement to be given or made by the holder of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when so delivered if by hand or overnight delivery or if sent
by certified mail or private courier service within five days after deposit of such notice, postage prepaid, addressed (until another address is filed in writing by the Warrant Agent with the Company), as follows: 

American Stock Transfer & Trust Company, LLC 

6201 15th Avenue 
 Brooklyn, New
York 11219 
 Attn: Relationship Management, Jacqueline I. Kretzu 

with a copy in each case to: 

American Stock Transfer & Trust Company, LLC 

6201 15th Avenue 
 Brooklyn, New
York 11219 
 Attn: General Counsel 

and 
 Cowen & Company,
LLC 
 599 Lexington Avenue 

New York, New York 10022 

Facsimile: (646) 562-1249 

Attention: Head of Equity Capital Markets 

with a copy in each case to: 

Cowen & Company, LLC 

599 Lexington Avenue 
 New York,
New York 10022 
 Facsimile: (646) 562-1124 

Attention: General Counsel 
 7.3.
Applicable law. This Agreement shall be construed and interpreted in accordance with the internal laws of the State of New York, without giving effect to the conflict of laws principles thereof. 

  
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 7.4. Persons Having Rights under this Warrant Agreement. Nothing in this Warrant Agreement
expressed and nothing that may be implied from any of the provisions hereof is intended, or shall be construed, to confer upon, or give to, any person or entity other than the parties hereto and the Registered Holders of the Warrants, any right,
remedy, or claim under or by reason of this Warrant Agreement or of any covenant, condition, stipulation, promise, or agreement hereof. All covenants, conditions, stipulations, promises, and agreements contained in this Warrant Agreement shall be
for the sole and exclusive benefit of the parties hereto and their successors and assigns and of the Registered Holders of the Warrants. 

7.5. Examination of the Warrant Agreement. A copy of this Warrant Agreement shall be available at all reasonable times at the office of
the Warrant Agent in the Borough of Manhattan, City and State of New York, for inspection by the Registered Holder of any Warrant. The Warrant Agent may require any such holder to submit his Warrant for inspection by it. 

7.6. Counterparts. This Warrant Agreement may be executed in any number of original, facsimile or .pdf format counterparts and
each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. 

7.7. Effect of Headings. The Section headings herein are for convenience only and are not part of this Warrant Agreement and shall not
affect the interpretation thereof. 
 7.8. Amendments. This Warrant Agreement may be amended by the parties hereto without the
consent of any Registered Holder: (i) for the purpose of curing any ambiguity or (ii) of curing, correcting or supplementing any defective provision contained herein or (iii) adding or for the purpose of changing any other provisions
with respect to matters or questions arising under this Warrant Agreement as the parties may deem necessary or desirable and that the parties deem shall not materially adversely affect the interest of the Registered Holders. Any modifications or
amendments to are subject to the terms set forth in Section 8 of the Warrant Certificate. 
 7.9. Severability. This Warrant
Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the validity or enforceability of this Warrant Agreement or of any other term or provision hereof. Furthermore, in lieu of
any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Warrant Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid
and enforceable. 
 8. Conflicts. In the event that any conflict or inconsistency between this Warrant Agreement and the Form of
Warrant Certificate, the Form of Warrant Certificate shall control. 
 9. Definitions. Unless the context otherwise requires, any
capitalized terms used but not defined herein that are defined in the Form of Warrant Certificate shall have the meanings set forth in the Form of Warrant Certificate. 

  
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 [signature page follows] 

  
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 IN WITNESS WHEREOF, this Warrant Agreement has been duly executed by the parties hereto as
of the day and year first above written. 
  

			
	AMERICAN SUPERCONDUCTOR CORPORATION
		
	By:	 	  

	Name:	 	David Henry
	Title:	 	Executive Vice President and Chief Financial Officer
	
	AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC
		
	By:	 	  

	Name:	 	
	Title:	 	

 EXHIBIT A 

[Form of Warrant] 

AMERICAN SUPERCONDUCTOR CORPORATION 

WARRANT TO PURCHASE COMMON STOCK 

CUSIP No.              

Warrant No.:              

Number of Shares of Common Stock:              

Date of Issuance: November 13, 2014 (the “Issuance Date”) 

American Superconductor Corporation, a Delaware corporation (the “Company”), hereby agrees that, for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,                     , the registered holder hereof or its permitted
assigns (the “Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at the Exercise Price (as defined below) then in effect, upon exercise of this Warrant to Purchase Common Stock (including any
Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof pursuant to Section 6, this “Warrant”), at any time or times until (but not after) 5:00 p.m., New York time, on the Expiration Date (as
defined below),                     
(                    ) fully paid nonassessable shares of Common Stock (as defined below) (the “Warrant Shares”). Except as
otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in Section 16. This Warrant is the warrant to purchase Common Stock issued pursuant to that certain Underwriting Agreement (the “Underwriting
Agreement”, and such Warrants, the “Registered Warrants”), dated as of November 7, 2014 (the “Offer Date”), by and between the Company and Cowen and Company, LLC and is being issued pursuant to the
Company’s Registration Statement on Form S-3 (File number 333-198851) (the “Registration Statement”). 
 1.
EXERCISE OF WARRANT. 
 (a) Mechanics of Exercise. Subject to the terms and conditions hereof and except as provided for in
Section 1.1.(b), this Warrant may be exercised by the Holder, in whole or in part, by delivery of a written notice, in the form attached hereto as Exhibit A (the “Exercise Notice”), of the Holder’s election to
exercise this Warrant. Within two (2) days following the Exercise Notice, the Holder shall make payment to the Company of an amount equal to the applicable Exercise Price multiplied by the number of Warrant Shares as to which this Warrant is
being exercised (the “Aggregate Exercise Price”) in cash or by wire transfer of immediately available funds, or provided the conditions for Cashless Exercise (as defined below) set forth in Section 1.1.(e) are satisfied, by
notifying the Company that this Warrant is being exercised pursuant to a Cashless Exercise. The Holder shall not be required to deliver the original Warrant in order to effect an exercise hereunder. Execution and delivery of the Exercise Notice with

  
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respect to less than all of the Warrant Shares shall have the same effect as cancellation of the original Warrant and issuance of a new Warrant evidencing the right to purchase the remaining
number of Warrant Shares. On or before the first (1st) Business Day following the date on which the Company has received a valid Exercise Notice, the Company shall transmit by facsimile or
e-mail transmission an acknowledgment of confirmation of receipt of the Exercise Notice to the Holder and the Company’s transfer agent (the “Transfer Agent”). On or before the third (3rd) Business Day following the date on which the Company has received a valid Exercise Notice and provided that the Company has received payment of the Aggregate Exercise Price as provided above,
the Company shall (X) provided that the Transfer Agent is participating in The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program, upon the request of the Holder, credit such aggregate number of Warrant
Shares to which the Holder is entitled pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through its Deposit/Withdrawal at Custodian system, or (Y) if the Transfer Agent is not participating in the
DTC Fast Automated Securities Transfer Program, issue and dispatch by overnight courier to the address as specified in the Exercise Notice, a certificate, registered in the Company’s share register in the name of the Holder or its designee, for
the number of shares of Common Stock to which the Holder is entitled pursuant to such exercise. At the Close of Business on the date of delivery of a valid Exercise Notice and provided that the Company has received payment of the Aggregate Exercise
Price as provided above, the Holder shall be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this Warrant has been exercised, irrespective of the date such Warrant Shares are credited
to the Holder’s DTC account or the date of delivery of the certificates evidencing such Warrant Shares, as the case may be. If this Warrant is submitted in connection with any exercise pursuant to this Section 1.1.(a) and the number of
Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares being acquired upon an exercise, then the Company shall as soon as practicable and in no event later than three (3) Business Days
after any exercise and at its own expense, issue a new Warrant (in accordance with Section 6.1.(d)) representing the right to purchase the number of Warrant Shares purchasable immediately prior to such exercise under this Warrant, less the
number of Warrant Shares with respect to which this Warrant is exercised. No fractional shares of Common Stock will be issued upon the exercise of this Warrant, but rather the Company will make a cash payment to the Holder in lieu thereof based on
the Closing Sale Price on the Exercise Date; provided, however, that, in lieu of such cash payment, the number of shares of Common Stock to be issued may, at the Company’s option, be rounded up to the nearest whole number. Except
as set forth in Section 15, the Company shall pay any and all taxes which may be payable with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. No Exercise Notice shall be considered valid unless complete and
validly executed by the Holder unless deemed so by the Company. All determinations of the validity of an Exercise Notice shall be made by the Company in good faith. 

(b) Exercise of Warrants with Warrant Agent. Notwithstanding Section 1.1.(a), so long as the Warrant Agent maintains the Warrant
Register, Warrants shall be exercised in the manner set forth in Section 3.4 of the Warrant Agreement. 
 (c) Exercise Price.
For purposes of this Warrant, “Exercise Price” means $1.10, subject to adjustment as provided herein. 

  
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 (d) Company’s Failure to Timely Deliver Securities. If the Company shall fail for
any reason or for no reason to issue to the Holder within three (3) Business Days of receipt of the Exercise Notice in compliance with the terms of this Section 1, a certificate for the number of shares of Common Stock to which the Holder
is entitled and register such shares of Common Stock on the Company’s share register or to credit the Holder’s balance account with DTC for such number of shares of Common Stock to which the Holder is entitled upon the Holder’s
exercise of this Warrant in each case as provided above, and if on or after such Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of shares of
Common Stock issuable upon such exercise that the Holder anticipated receiving from the Company, then the Company shall, within three (3) Business Days after the Holder’s request and in the Holder’s discretion, either (i) pay
cash to the Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased (the “Buy-In Price”), at which point the Company’s obligation
to deliver such certificate (and to issue such Warrant Shares) shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such Warrant Shares and pay cash to the Holder in an
amount equal to the excess (if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) the Closing Bid Price on the date of exercise. 

(e) Cashless Exercise. If an effective registration statement is available for the issuance of the Warrant Shares, the Warrants may
only be exercised through a cash exercise (a “Cash Exercise”). Notwithstanding anything contained herein to the contrary, in the event an effective registration statement is not then available for the issuance of the Warrant Shares,
the Holder may, in its sole discretion, exercise this Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company upon such exercise in payment of the Aggregate Exercise Price, elect instead
to receive upon such exercise the “Net Number” of shares of Common Stock determined according to the following formula (a “Cashless Exercise”): 
  

							
		 	Net Number =	 	 (A x B) - (A x C)
	  	
		 		 	D	  	

 For purposes of the foregoing formula: 

 

	 	A=	the total number of shares with respect to which this Warrant is then being exercised; 

  

	 	B=	the arithmetic average of the Closing Sale Prices of the shares of Common Stock for the five (5) consecutive Trading Days ending on the date immediately preceding the date of the Exercise Notice; 

 

	 	C=	the Exercise Price then in effect for the applicable Warrant Shares at the time of such exercise; and 

  

	 	D=	the Closing Sale Price on the date of the Exercise Notice. 

  
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 (f) Rule 144. For purposes of Rule 144(d) promulgated under the Securities Act, as in
effect on the date hereof, it is intended that the Warrant Shares issued in a Cashless Exercise shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the Issuance
Date. 
 (g) Disputes. In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the
Warrant Shares, the Company shall promptly issue to the Holder the number of Warrant Shares that are not disputed. 
 (h) Beneficial
Ownership Limitation. The Company shall not effect the exercise of this Warrant, and the Holder shall not have the right to exercise this Warrant, to the extent that after giving effect to such exercise, the Holder (together with the
Holder’s affiliates) would beneficially own in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing sentence, the
aggregate number of shares of Common Stock beneficially owned by the Holder and its affiliates shall include the number of shares of Common Stock issuable upon exercise of this Warrant with respect to which the determination of such sentence is
being made, but shall exclude shares of Common Stock which would be issuable upon (i) exercise of the remaining, unexercised portion of this Warrant beneficially owned by the Holder and its affiliates and (ii) exercise or conversion of the
unexercised or unconverted portion of any other securities of the Company beneficially owned by the Holder and its affiliates (including, without limitation, any convertible notes or convertible preferred stock or warrants) subject to a limitation
on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this paragraph, beneficial ownership shall be calculated in accordance with Section 13(d) of the 1934 Act.
For purposes of this Warrant, in determining the number of outstanding shares of Common Stock, the Holder may rely on the number of outstanding shares of Common Stock as reflected in (1) the Company’s most recent Annual Report on
Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other public filing with the Securities and Exchange Commission, as the case may be, (2) a more recent public announcement by the Company or (3) any
other notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding, in each case as of the date such report, announcement or notice speaks. For any reason at any time, upon the written or oral request of
the Holder, the Company shall within one (1) Business Day confirm in writing to the Holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of Common Stock shall be determined after giving
effect to the conversion or exercise of securities of the Company, including the Warrants, by the Holder and its affiliates since the date as of which such number of outstanding shares of Common Stock was reported. By written notice to the Company,
the Holder may from time to time increase or decrease the Maximum Percentage to any other percentage not in excess of 9.99% specified in such notice; provided that (i) any such increase will not be effective until the sixty-first (61st) day after such notice is delivered to the Company, and (ii) any such increase or decrease will apply only to the Holder and not to any other holder of the Warrants. For the avoidance of
doubt, to the extent the limitation set forth in this Section 1.1.(h) applies, the determination (i) of whether the exercise of this Warrant may be effected (vis-a-vis other options or convertible securities owned by the Holder or any of
its Affiliates) and (ii) of which such options or convertible securities shall be convertible, exercisable or exchangeable (as the case may be, as among all such 

  
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securities owned by the Holder) shall, subject to such Maximum Percentage limitation, be determined on the basis of the first submission to the Company for conversion, exercise or exchange (as
the case may be). The provisions of this paragraph shall be construed and implemented in a manner other than in strict conformity with the terms of this Section 1.1.(h) to correct this paragraph (or any portion hereof) which may be defective or
inconsistent with the intended beneficial ownership limitation herein contained or to make changes or supplements necessary or desirable to properly give effect to such limitation. 

2. ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES. The Exercise Price and the number of Warrant Shares shall be adjusted
from time to time as follows: 
 (a) Stock Dividends and Splits. If the Company, at any time on or after the Offer Date,
(i) pays a stock dividend on one or more classes of its then outstanding shares of Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides (by any stock split,
stock dividend, recapitalization or otherwise) one or more classes of its then outstanding shares of Common Stock into a larger number of shares or (iii) combines (by combination, reverse stock split or otherwise) one or more classes of its
then outstanding shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before
such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. Any adjustment made pursuant to clause (i) of this paragraph shall become effective immediately after the record
date for the determination of stockholders entitled to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall become effective immediately at the Close of Business on the
effective date of such subdivision or combination. 
 (b) Pro Rata Distributions. If the Company, at any time while this Warrant is
outstanding, shall distribute to all holders of Common Stock (and not to the Holders) evidences of its indebtedness or assets (including cash and cash dividends) or rights or warrants to subscribe for or purchase any security (other than the Common
Stock which shall be subject to Section 2(a)) (a “Distribution”), then in each such case the Exercise Price shall be adjusted by multiplying the Exercise Price in effect immediately prior to the record date fixed for
determination of stockholders entitled to receive such distribution by a fraction of which the denominator shall be the average of the Closing Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and
including the Trading Day immediately preceding the record date mentioned above (the “Average Price”), and of which the numerator shall be such Average Price on such record date less the then per share fair market value at such
record date of the portion of such assets or evidence of indebtedness so distributed applicable to one outstanding share of Common Stock as determined by the Company in good faith. Such adjustment shall be made whenever any such distribution is made
and shall become effective immediately at the Close of Business on the record date mentioned above. Notwithstanding the foregoing, if any adjustment pursuant to this Section 2(b) would cause the Exercise Price of this Warrant to be less than
the par value of a share of Common Stock, in lieu of the foregoing adjustment, the Holder shall be entitled to participate in such Distribution (and any subsequent 

  
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Distributions) to the same extent that the Holder would have participated therein if the Holder had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant
(without regard to any limitations or restrictions on exercise of this Warrant, including without limitation, the Maximum Percentage) immediately before the date of which a record is taken for such Distribution, or, if no such record is taken, the
date as of which the record holders of shares of Common Stock are to be determined for the participation in such Distribution (provided, however, that to the extent that the Holder’s right to participate in any such Distribution
would result in the Holder and the exceeding the Maximum Percentage, then the Holder shall not be entitled to participate in such Distribution to such extent (and shall not be entitled to beneficial ownership of such shares of Common Stock as a
result of such Distribution (and beneficial ownership) to such extent) and the portion of such Distribution shall be held in abeyance for the benefit of the Holder until such time or times, if ever, as its right thereto would not result in the
Holder and the other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be granted such Distribution (and any Distributions declared or made on such initial Distribution or on any subsequent Distribution
held similarly in abeyance) to the same extent as if there had been no such limitation). 
 (c) Number of Warrant Shares.
Simultaneously with any adjustment to the Exercise Price pursuant to Section 2(a) or Section 2(b), the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that
after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment (without regard to any limitations on
exercise contained herein). 
 (d) Adjustment Upon Issuance of Shares of Common Stock. If and whenever on or after the Issuance
Date, the Company issues or sells, or in accordance with this Section 2(d) is deemed to have issued or sold, any shares of Common Stock (including the issuance or sale of shares of Common Stock owned or held by or for the account of the
Company, but excluding any Excluded Securities issued or sold or deemed to have been issued or sold for consideration per share (the “New Issuance Price”) less than the Exercise Price in effect immediately prior to such issue or
sale or deemed issuance or sale (such Exercise Price then in effect is referred to as the “Applicable Price”, and the foregoing a “Dilutive Issuance”) (such number being appropriately adjusted to reflect the
occurrence of any event described in Section 2(a) or Section 2(b)), then, immediately after such Dilutive Issuance, the Exercise Price then in effect shall be reduced to an amount equal to the product of (A) the Applicable Price and
(B) the quotient determined by dividing (1) the sum of (I) the product derived by multiplying the Applicable Price and the number of shares of Common Stock Deemed Outstanding immediately prior to such Dilutive Issuance plus (II) the
consideration, if any, received by the Company upon such Dilutive Issuance, by (2) the product derived by multiplying (I) the Applicable Price by (II) the number of shares of Common Stock Deemed Outstanding immediately after such Dilutive
Issuance. For all purposes of the foregoing (including, without limitation, determining the adjusted Exercise Price, the consideration per share and the New Issuance Price under this Section 2(d), the following shall be applicable: 

  
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 (i) Issuance of Options. If the Company in any manner grants or sells any
Options and the lowest price per share for which one share of Common Stock is issuable upon the exercise of any such Option or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such Option is less than
the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued and sold by the Company at the time of the granting or sale of such Option for such price per share. For purposes of this
Section 2(d)(i), the “lowest price per share for which one share of Common Stock is issuable upon the exercise of any such Options or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such
Option” shall be equal to (1) the lower of (x) the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to any one share of Common Stock upon the granting or sale of such Option, upon
exercise of such Option and upon conversion, exercise or exchange of any Convertible Security issuable upon exercise of such Option and (y) the lowest exercise price set forth in such Option for which one share of Common Stock is issuable upon
the exercise of any such Options or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such Option minus (2) the sum of all amounts paid or payable to the holder of such Option (or any other
Person) upon the granting or sale of such Option, upon exercise of such Option and upon conversion, exercise or exchange of any Convertible Security issuable upon exercise of such Option plus the value of any other consideration received or
receivable by, or benefit conferred on, the holder of such Option (or any other Person). Except as contemplated below, no further adjustment of the Exercise Price shall be made upon the actual issuance of such shares of Common Stock or of such
Convertible Securities upon the exercise of such Options or upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities. 

(ii) Issuance of Convertible Securities. If the Company in any manner issues or sells any Convertible Securities and
the lowest price per share for which one share of Common Stock is issuable upon the conversion, exercise or exchange thereof is less than the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued
and sold by the Company at the time of the issuance or sale of such Convertible Securities for such price per share. For the purposes of this Section 2(d)(ii), the “lowest price per share for which one share of Common Stock is issuable
upon the conversion, exercise or exchange thereof” shall be equal to (1) the lower of (x) the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to one share of Common Stock upon the
issuance or sale of the Convertible Security and upon conversion, exercise or exchange of such Convertible Security and (y) the lowest conversion price set forth in such Convertible Security for which one share of Common Stock is issuable upon
conversion, exercise or exchange thereof minus (2) the sum of all amounts paid or payable to the holder of such Convertible Security (or any other Person) upon the issuance or sale of such Convertible Security plus the value of any other

  
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consideration received or receivable by, or benefit conferred on, the holder of such Convertible Security (or any other Person). Except as contemplated below, no further adjustment of the
Exercise Price shall be made upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities, and if any such issue or sale of such Convertible Securities is made upon exercise of any
Options for which adjustment of this Warrant has been or is to be made pursuant to other provisions of this Section 2(d), except as contemplated below, no further adjustment of the Exercise Price shall be made by reason of such issue or sale.

 (iii) Change in Option Price or Rate of Conversion. If the purchase or exercise price provided for in any Options
referred to in Section 2(d)(i), the additional consideration, if any, payable upon the issue, conversion, exercise or exchange of any Convertible Securities referred to in Section 2(d)(i) or 2(d)(ii), or the rate at which any Convertible
Securities referred to in Section 2(d)(i) or 2(d)(ii) are convertible into or exercisable or exchangeable for shares of Common Stock increases or decreases at any time, the Exercise Price in effect at the time of such increase or decrease shall
be adjusted to the Exercise Price which would have been in effect at such time had such Options or Convertible Securities provided for such increased or decreased purchase price, additional consideration or increased or decreased conversion rate, as
the case may be, at the time initially granted, issued or sold. For purposes of this Section 2(d)(iii), if the terms of any Option or Convertible Security that was outstanding as of the date of issuance of this Warrant are increased or
decreased in the manner described in the immediately preceding sentence, then such Option or Convertible Security and the shares of Common Stock deemed issuable upon exercise, conversion or exchange thereof shall be deemed to have been issued as of
the date of such increase or decrease. On the expiration of any Options referred to in Section 2(d)(i) or any Convertible Securities referred to in Section 2(d)(ii), or the termination of any such right to exercise, convert or exchange
such Options or Convertible Securities, the Applicable Price then in effect hereunder shall forthwith be increased to the Applicable Price which would have been in effect at the time of such expiration or termination had such Options or Convertible
Securities, to the extent outstanding immediately prior to such expiration or termination, never been issued. 
 (iv)
Calculation of Consideration Received. If any Option or Convertible Security or Adjustment Right is issued in connection with the issuance or sale or deemed issuance or sale of any other securities of the Company, together comprising one
integrated transaction, (x) such Option or Convertible Security (as applicable) or Adjustment Right (as applicable) will be deemed to have been issued for consideration equal to the Black Scholes Consideration Value thereof and (y) the
other securities issued or sold or deemed to have been issued or sold in such integrated transaction shall be deemed to have been issued for consideration equal to the difference of (I) the aggregate consideration received or receivable by the
Company minus (II) the Black 

  
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Scholes Consideration Value of each such Option or Convertible Security (as applicable) or Adjustment Right (as applicable). If any shares of Common Stock, Options or Convertible Securities are
issued or sold or deemed to have been issued or sold for cash, the consideration received therefor will be deemed to be the net amount of consideration received by the Company therefor. If any shares of Common Stock, Options or Convertible
Securities are issued or sold for a consideration other than cash, the amount of such consideration received by the Company will be the fair value of such consideration, except where such consideration consists of publicly traded securities, in
which case the amount of consideration received by the Company for such securities will be the arithmetic average of the VWAPs of such security for each of the five (5) Trading Days immediately preceding the date of receipt. If any shares of
Common Stock, Options or Convertible Securities are issued to the owners of the non-surviving entity in connection with any merger in which the Company is the surviving entity, the amount of consideration therefor will be deemed to be the fair value
of such portion of the net assets and business of the non-surviving entity as is attributable to such shares of Common Stock, Options or Convertible Securities, as the case may be. The fair value of any consideration other than cash or publicly
traded securities will be determined jointly by the Company and the Holder. If such parties are unable to reach agreement within ten (10) days after the occurrence of an event requiring valuation (the “Valuation Event”), the
fair value of such consideration will be determined within five (5) Trading Days after the tenth (10th) day following such Valuation Event by an independent, reputable appraiser jointly selected by the Company and the Holder. The
determination of such appraiser shall be final and binding upon all parties absent manifest error and the fees and expenses of such appraiser shall be borne by the Company. 

(v) Notice of At-The-Market Draws. Solely with respect to issuances or deemed issuances of shares of Common Stock of
the Company under any “at-the-market” or similar arrangement pursuant to which the Company issues Common Stock (an “ATM Facility”), but specifically excluding any “equity line of credit” or other similar
arrangement, the Company shall notify the Holder of any reductions in the Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility as follows: (x) with respect to any reduction in the
Exercise Price, in the aggregate, of at least $0.05, within one (1) Business Day of such reduction in the Exercise Price or (y) otherwise, with respect to any reduction in the Exercise Price in any calendar month, on the first Business Day
of the immediately subsequent calendar month. For the avoidance of doubt, (i) no reduction in the Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility shall occur during the course of a
calendar month until the amount of such reduction in Exercise Price otherwise required by Section 2(d) as a result of such issuances or deemed issuances during such calendar month shall be at least $0.05 and (ii) except as set forth in the
preceding clause (i), reductions in Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility shall only be determined at the end of each calendar month and only

  
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with respect to the issuances or deemed issuances under such ATM facility since the later of (x) the end of the preceding calendar month or (ii) the last adjustment made pursuant to the
preceding clause (i). For purposes hereof, any issuance or sale, or deemed issuance or sale, of shares of Common Stock in a calendar month under an ATM Facility shall not be aggregated with any such issuance or sale on any other calendar month. 

(vi) Record Date. If the Company takes a record of the holders of shares of Common Stock for the purpose of entitling
them (A) to receive a dividend or other distribution payable in shares of Common Stock, Options or in Convertible Securities or (B) to subscribe for or purchase shares of Common Stock, Options or Convertible Securities, then such record
date will be deemed to be the date of the issue or sale of the shares of Common Stock deemed to have been issued or sold upon the declaration of such dividend or the making of such other distribution or the date of the granting of such right of
subscription or purchase (as the case may be). 
 (e) Calculations. All calculations under this Section 2 shall be made by
rounding to the nearest cent or the nearest 1/100th of a share, as applicable. 
 3.
FUNDAMENTAL TRANSACTIONS. 
 (a) Fundamental Transactions. If a Fundamental Transaction occurs as a result of which the
Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets (including cash or any combination thereof) (any such Fundamental Transaction, a “Share Exchange Event”; any such stock, other
securities or other property or assets, “Reference Property”; and the amount of Reference Property that a holder of one share of Common Stock immediately prior to such Share Exchange Event would have been entitled to receive upon
the occurrence of such Share Exchange Event, a “Reference Property Unit”), then from and after the effective time of such Share Exchange Event, upon exercise of this Warrant, for each share of Common Stock that the Company would
otherwise be obligated to deliver with respect to such exercise, the Company will instead deliver a Reference Property Unit. If such Share Exchange Event causes the Common Stock to be converted into, or exchanged for, the right to receive more than
a single type of consideration (determined based in part upon any form of stockholder election), then (i) the Reference Property shall be deemed to be (a) the weighted average of the types and amounts of consideration received by the
holders of Common Stock that affirmatively make such an election or (b) if no holders of the Common Stock affirmatively make such an election, the types and amounts of consideration actually received by the holders of the Common Stock, and
(ii) a Reference Property Unit shall refer to the consideration referred to in clause (i) attributable to one share of Common Stock. The Company shall not enter into or be party to such a Share Exchange Event unless the Successor Entity
assumes in writing all of the obligations of the Company under this Warrant in accordance with the provisions of this Section 3.1.(a), including agreements to deliver to the Holder in exchange for this Warrant a security of the Successor Entity
evidenced by a written instrument substantially similar in form and substance to this Warrant, including, without limitation, which is exercisable for a corresponding number of Reference Property Units equivalent to the number

  
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of shares of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to any limitations on the exercise of this Warrant) prior to such Share Exchange Event, and with
an exercise price which applies the Exercise Price hereunder to such Reference Property Units. Upon the consummation of each such Share Exchange Event, the Successor Entity shall succeed to, and be substituted for (so that from and after the date of
the applicable Share Exchange Event, the provisions of this Warrant referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and power of the Company and shall assume all of the obligations of
the Company under this Warrant with the same effect as if such Successor Entity had been named as the Company herein. Notwithstanding the foregoing, the Holder may elect, at its sole option, by delivery of written notice to the Company to waive this
Section 3.1.(a) to permit the Share Exchange Event without the assumption of this Warrant by the Successor Entity. In addition, in the event of a Fundamental Transaction, at the request of the Holder delivered at any time commencing on the
earliest to occur of (x) the public disclosure of any Fundamental Transaction, (y) the consummation of any Fundamental Transaction and (z) the Holder first becoming aware of any Fundamental Transaction through the thirtieth (30th) day after the later of (x) the date of such Fundamental Transaction and (y) the date of the public disclosure of the consummation of such Fundamental Transaction by the Company
pursuant to a Current Report on Form 8-K filed with the SEC, the Company (or the Successor Entity) shall purchase this Warrant from the Holder by paying to the Holder, within five (5) Business Days after such request, cash in an amount equal to
the Black Scholes Value of the remaining unexercised portion of this Warrant outstanding on the date of the consummation of such Fundamental Transaction. 

(b) Application. The provisions of this Section 3 shall apply similarly and equally to successive Fundamental Transactions and
shall be applied as if this Warrant (and any such subsequent warrants) were fully exercisable and without regard to any limitations on the exercise of this Warrant (provided that the Holder shall continue to be entitled to the benefit of the Maximum
Percentage, applied however with respect to shares of capital stock registered under the 1934 Act and thereafter receivable upon exercise of this Warrant (or any such other warrant)). 

4. NONCIRCUMVENTION. The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of
Incorporation or Bylaws, avoid or seek to avoid the observance or performance of any of the terms of this Warrant, and will at all times in good faith carry out all the provisions of this Warrant and take all action as may be required to protect the
rights of the Holder provided for herein. Without limiting the generality of the foregoing, the Company (i) shall not increase the par value of any shares of Common Stock receivable upon the exercise of this Warrant above the Exercise Price
then in effect, (ii) shall take all such actions as may be necessary or appropriate in order that the Company may validly and legally issue fully paid and nonassessable shares of Common Stock upon the exercise of this Warrant, and
(iii) shall, so long as this Warrant is outstanding, take all action necessary to reserve and keep available out of its authorized and unissued shares of Common Stock, solely for the purpose of effecting the exercise of this Warrant, 100% of
the number of shares of Common Stock issuable upon exercise of this Warrant then outstanding (without regard to any limitations on exercise). 

  
 25 

 5. WARRANT HOLDER NOT DEEMED A STOCKHOLDER. The Holder, solely in such Person’s
capacity as a holder of this Warrant, shall not be entitled to vote or receive dividends or be deemed the holder of share capital of the Company for any purpose, nor shall anything contained in this Warrant be construed to confer upon the Holder,
solely in such Person’s capacity as the Holder of this Warrant, any of the rights of a stockholder of the Company or any right to vote, give or withhold consent to any corporate action (whether any reorganization, issue of stock,
reclassification of stock, consolidation, merger, conveyance or otherwise), receive notice of meetings, receive dividends or subscription rights, or otherwise, prior to the issuance to the Holder of the Warrant Shares which such Person is then
entitled to receive upon the due exercise of this Warrant. In addition, nothing contained in this Warrant shall be construed as imposing any obligations on the Holder to purchase any securities (upon exercise of this Warrant or otherwise) or as a
stockholder of the Company, whether such obligations are asserted by the Company or by creditors of the Company. 
 6. REISSUANCE OF
WARRANTS. 
 (a) Transfer of Warrant. Subject to Section 6(e), if this Warrant is to be transferred, the Holder shall
surrender this Warrant to the Company or its designated agent and deliver the completed and executed Assignment Form, in the form attached hereto as Exhibit B, whereupon the Company or such agent will forthwith issue and deliver upon the
order of the Holder a new Warrant (in accordance with Section 6.1.(d)), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by the Holder and, if less than the total number of
Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 6.1.(d)) to the Holder representing the right to purchase the number of Warrant Shares not being transferred. 

(b) Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the Company of the loss,
theft, destruction or mutilation of this Warrant, and, in the case of loss, theft or destruction, of any indemnification undertaking by the Holder to the Company in customary form and, in the case of mutilation, upon surrender and cancellation of
this Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 6.1.(d)) representing the right to purchase the Warrant Shares then underlying this Warrant. 

(c) Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal office
of the Company or such other address as it may designate, including the address of its designated agent, for a new Warrant or Warrants (in accordance with Section 6.1.(d)) representing in the aggregate the right to purchase the number of
Warrant Shares then underlying this Warrant, and each such new Warrant will represent the right to purchase such portion of such Warrant Shares as is designated by the Holder at the time of such surrender; provided, however, that no
Warrants for fractional shares of Common Stock shall be given. 
 (d) Issuance of New Warrants. Whenever the Company is required to
issue a new Warrant pursuant to the terms of this Warrant, such new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant, the

  
 26 

 
right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being issued pursuant to Section 6.1.(a) or Section 6.1.(c), the Warrant Shares
designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrants issued in connection with such issuance, does not exceed the number of Warrant Shares then underlying this Warrant),
(iii) shall have an issuance date, as indicated on the face of such new Warrant which is the same as the Issuance Date, and (iv) shall have the same rights and conditions as this Warrant. 

(e) Transfer of Warrant with Warrant Agent. Notwithstanding this Section 6, so long as the Warrant Agent maintains the Warrant
Register, this Warrant shall be transferred in the manner, and subject to the terms and conditions set forth in Section 5 of the Warrant Agreement. 

7. WARRANT AGREEMENT. This Warrant is issued under and in accordance with a Warrant Agreement dated as of November 13, 2014 (the
“Warrant Agreement”), between the Company and American Stock Transfer & Trust Company (the “Warrant Agent,” which term includes any successor Warrant Agent under the Warrant Agreement), and is subject to
the terms and provisions contained in the Warrant Agreement, to all of which terms and provisions the beneficial owners of the Warrants and the Holders consent by acceptance hereof. The Warrant Agreement is hereby incorporated herein by reference
and made a part hereof. Reference is hereby made to the Warrant Agreement for a statement of the respective rights, limitations of rights, duties and obligations of the Company, the Warrant Agent and the Holder and beneficial owners of the Warrants.
A copy of the Warrant Agreement may be obtained for inspection by the Holder upon written request to the Company at American Superconductor Corporation, 64 Jackson Road, Devens, MA 01434, Attention: David Henry. 

8. NOTICES. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in
writing, will be mailed (a) if within the domestic United States by first-class registered or certified airmail, or nationally recognized overnight express courier, postage prepaid, or by facsimile or (b) if delivered from outside the
United States, by International Federal Express or facsimile and will be deemed given (i) if delivered by first-class registered or certified mail domestic, three (3) Business Days after so mailed, (ii) if delivered by nationally
recognized overnight carrier, one (1) Business Day after so mailed, (iii) if delivered by International Federal Express, two (2) Business Days after so mailed and (iv) if delivered by facsimile, upon electronic confirmation of
receipt, and will be delivered and addressed as follows: 
  

	 	(i)	if to the Company, to: 

 American Superconductor Corporation 

64 Jackson Road 
 Devens, MA
01434 
 Attention: David Henry 

Telephone: (978) 842-3000 

Email: David.Henry@amsc.com 

and 
  

	 	(ii)	if to the Holder, at the address of the Holder appearing on the Warrant Register (as defined below). 

  
 27 

 The Company shall register this Warrant or cause this Warrant to be registered, upon records to
be maintained by the Warrant Agent for that purpose (the “Warrant Register”), in the name of the record Holder (which shall include the initial Holder or, as the case may be, any registered assignee to which this Warrant is
permissibly assigned hereunder from time to time). The Company may deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other
purposes, absent actual notice to the contrary. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance with the Warrant Register. The Company shall provide the Holder
with prompt written notice of all actions taken pursuant to this Warrant, including in reasonable detail a description of such action and the reason therefor. Without limiting the generality of the foregoing, the Company will give written notice to
the Holder (i) immediately upon each adjustment of the Exercise Price and the number of Warrant Shares, setting forth in reasonable detail, and certifying, the calculation of such adjustment(s) and (ii) at least fifteen (15) days
prior to the date on which the Company closes its books or takes a record (A) with respect to any dividend or distribution upon the shares of Common Stock, (B) with respect to any grants, issuances or sales of any rights to purchase stock,
warrants, securities or other property to all holders of shares of Common Stock or (C) for determining rights to vote with respect to any Fundamental Transaction, dissolution or liquidation, provided in each case that such information shall be
made known to the public prior to or in conjunction with such notice being provided to the Holder and (iii) at least ten (10) Trading Days prior to the consummation of any Fundamental Transaction. 

9. AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant may be amended and the Company may take
any action herein prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent of the Holder. The foregoing notwithstanding, the Company may extend the Expiration Date and reduce
the Exercise Price without the consent of the Holder. 
 10. SEVERABILITY. If any provision of this Warrant is prohibited by law or
otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and
enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Warrant so long as this Warrant as so modified continues to express, without material change, the original
intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or
the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect
of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 

  
 28 

 11. GOVERNING LAW. This Warrant shall be governed by and construed and enforced in
accordance with, and all questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any choice of law or conflict of law
provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. The Company hereby irrevocably submits to the exclusive jurisdiction
of the state and federal courts sitting in The City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such
suit, action or proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Nothing contained herein shall be deemed or operate to preclude the Holder from bringing
suit or taking other legal action against the Company in any other jurisdiction to collect on the Company’s obligations to the Holder or to enforce a judgment or other court ruling in favor of the Holder. THE COMPANY HEREBY IRREVOCABLY
WAIVES ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

12. CONSTRUCTION; HEADINGS. This Warrant shall be deemed to be jointly drafted by the Company and the Holder and shall not be construed
against any Person as the drafter hereof. The headings of this Warrant are for convenience of reference and shall not form part of, or affect the interpretation of, this Warrant. 

13. DISPUTE RESOLUTION. In the case of a dispute as to the determination of the Exercise Price, the Closing Sale Price, the Closing Bid
Price, the Average Price or fair market value or the arithmetic calculation of the Warrant Shares (as the case may be), the Company or the Holder (as the case may be) shall submit the disputed determinations or arithmetic calculations (as the case
may be) via facsimile or electronically via .pdf format (i) within two (2) Business Days after receipt of the applicable notice giving rise to such dispute to the Company or the Holder (as the case may be) or (ii) if no notice
gave rise to such dispute, at any time after the Holder learned of the circumstances giving rise to such dispute. If the Holder and the Company are unable to agree upon such determination or calculation (as the case may be) of the Exercise Price,
the Closing Sale Price, the Closing Bid Price, the Average Price or fair market value or the number of Warrant Shares (as the case may be) within three (3) Business Days of such disputed determination or arithmetic calculation being submitted
to the Company or the Holder (as the case may be), then the Company shall, within two (2) Business Days submit via facsimile or electronically via .pdf format (a) the disputed determination of the Exercise Price, the Closing Sale
Price, the Closing Bid Price, the Average Price or fair market value (as the case may be) to an independent, reputable investment bank selected by the Company and 

  
 29 

 
reasonably acceptable to the Holder or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant. The Company shall cause at its
expense the investment bank or the accountant (as the case may be) to perform the determinations or calculations (as the case may be) and notify the Company and the Holder of the results no later than ten (10) Business Days from the time it
receives such disputed determinations or calculations (as the case may be). Such investment bank’s or accountant’s determination or calculation (as the case may be) shall be binding upon all parties absent demonstrable error. 

14. REMEDIES, OTHER OBLIGATIONS, BREACHES AND INJUNCTIVE RELIEF. The remedies provided in this Warrant shall be cumulative and in
addition to all other remedies available under this Warrant, at law or in equity (including a decree of specific performance and/or other injunctive relief), and nothing herein shall limit the right of the Holder to pursue actual damages for any
failure by the Company to comply with the terms of this Warrant. The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to the Holder and that the remedy at law for any such breach may be inadequate.
The Company therefore agrees that, in the event of any such breach or threatened breach, the holder of this Warrant shall be entitled, in addition to all other available remedies, to an injunction restraining any breach, without the necessity of
showing economic loss and without any bond or other security being required. The Company shall provide all information and documentation to the Holder that is requested in writing by the Holder to enable the Holder to confirm the Company’s
compliance with the terms and conditions of this Warrant. Subject to Section 15, the issuance of shares and certificates for shares as contemplated hereby upon the exercise of this Warrant shall be made without charge to the Holder or such
shares for any issuance tax or other costs in respect thereof. 
 15. TRANSFER. This Warrant may be offered for sale, sold,
transferred or assigned without the consent of the Company. The Holder shall be responsible for all taxes payable in connection with any such sale, transfer or assignment 

16. Participation Right in Variable Rate Transactions. At any time during the period commencing on the Offer Date and ending on the
first anniversary of the Offer Date (the “Participation Right Period”), neither the Company nor any of its Subsidiaries shall, directly or indirectly, effect any Variable Rate Transaction during the Participation Right Period (each,
a “Subsequent Placement”, unless the Company shall have first complied with this Section 16. The Company and the Holder acknowledge and agree that the right set forth in this Section 16 is a right granted by the Company,
separately and exclusively, to the sole initial purchaser of Registered Warrants from the underwriter (or its agents and co-underwriters) pursuant to the Underwriting Agreement (each a “Registered Holder”) and that such right is not
transferable to any subsequent Holder. 
 (i) At least five (5) Trading Days prior to any proposed or intended
Subsequent Placement, the Company shall deliver to each Registered Holder a written notice (each such notice, a “Pre-Notice”), which Pre-Notice shall not contain any information (including, without limitation, material, non-public
information) other than: (i) if the proposed Offer Notice (as defined below) constitutes or contains material, non-public 

  
 30 

 
information, a statement asking whether the Investor is willing to accept material non-public information or (ii) if the proposed Offer Notice does not constitute or contain material,
non-public information, (A) a statement that the Company proposes or intends to effect a Subsequent Placement, (B) a statement that the statement in clause (A) above does not constitute material, non-public information and (C) a
statement informing such Registered Holder that it is entitled to receive an Offer Notice (as defined below) with respect to such Subsequent Placement upon its written request. Upon the written request of a Registered Holder within three
(3) Trading Days after the Company’s delivery to such Registered Holder of such Pre-Notice, and only upon a written request by such Registered Holder, the Company shall promptly, but no later than one (1) Trading Day after such
request, deliver to such Registered Holder an irrevocable written notice (the “Offer Notice”) of any proposed or intended issuance or sale or exchange (the “Offer”) of the securities being offered (the
“Offered Securities”) in a Subsequent Placement, which Offer Notice shall (w) identify and describe the Offered Securities, (x) describe the price and other terms upon which they are to be issued, sold or exchanged, and
the number or amount of the Offered Securities to be issued, sold or exchanged, (y) identify the Persons (if known) to which or with which the Offered Securities are to be offered, issued, sold or exchanged and (z) offer to issue and sell
to or exchange with such Registered Holder in accordance with the terms of the Offer such Registered Holder’s pro rata portion of the Offered Securities, provided that the number of Offered Securities which such Registered Holder shall have the
right to subscribe for under this Section 16 shall be (a) based on such Registered Holder’s pro rata portion of such Registered Warrants initially acquired from the Underwriter (or its agents or co-underwriters) (the “Basic
Amount”), and (b) with respect to each Registered Holder that elects to purchase its Basic Amount, any additional portion of the Offered Securities attributable to the Basic Amounts of other Registered Holders as such Registered Holder
shall indicate it will purchase or acquire should the other Registered Holders subscribe for less than their Basic Amounts (the “Undersubscription Amount”). 

(ii) To accept an Offer, in whole or in part, such Registered Holder must deliver a written notice to the Company prior to the
end of the third (3rd) Business Day after such Registered Holder’s receipt of the Offer Notice (the “Offer Period”), setting forth the portion of such Registered
Holder’s Basic Amount that such Registered Holder elects to purchase and, if such Registered Holder shall elect to purchase all of its Basic Amount, the Undersubscription Amount, if any, that such Registered Holder elects to purchase (in either
case, the “Notice of Acceptance”). If the Basic Amounts subscribed for by all Registered Holders are less than the total of all of the Basic Amounts, then such Registered Holder who has set forth an Undersubscription Amount in its
Notice of Acceptance shall be entitled to purchase, in addition to the Basic Amounts subscribed for, the Undersubscription Amount it has subscribed for; provided, however, if the Undersubscription Amounts subscribed for exceed the difference between
the total of all the Basic Amounts and the Basic Amounts subscribed for (the “Available Undersubscription Amount”), such Registered Holder who has subscribed for any Undersubscription Amount shall be entitled to purchase only that
portion of the Available Undersubscription Amount as the Basic Amount of such Registered Holder bears to the total Basic Amounts of all Registered Holders that have subscribed for Undersubscription 

  
 31 

 
Amounts, subject to rounding by the Company to the extent it deems reasonably necessary. Notwithstanding the foregoing, if the Company desires to modify or amend the terms and conditions of the
Offer prior to the expiration of the Offer Period, the Company may deliver to each Registered Holder a new Offer Notice and the Offer Period shall expire on the third (3rd) Business Day after
such Registered Holder’s receipt of such new Offer Notice. 
 (iii) The Company shall have five (5) Business Days
from the expiration of the Offer Period above (i) to offer, issue, sell or exchange all or any part of such Offered Securities as to which a Notice of Acceptance has not been given by a Registered Holder (the “Refused
Securities”) pursuant to a definitive agreement(s) (the “Subsequent Placement Agreement”), but only to the offerees described in the Offer Notice (if so described therein) and only upon terms and conditions (including,
without limitation, unit prices and interest rates) that are not more favorable to the acquiring Person or Persons or less favorable to the Company than those set forth in the Offer Notice and (ii) to publicly announce (a) the execution of
such Subsequent Placement Agreement, and (b) either (x) the consummation of the transactions contemplated by such Subsequent Placement Agreement or (y) the termination of such Subsequent Placement Agreement, which shall be filed with
the SEC on a Current Report on Form 8-K with such Subsequent Placement Agreement and any documents contemplated therein filed as exhibits thereto. 

(iv) In the event the Company shall propose to sell less than all the Refused Securities (any such sale to be in the manner and
on the terms specified in Section 16(iii) above), then such Registered Holder may, at its sole option and in its sole discretion, reduce the number or amount of the Offered Securities specified in its Notice of Acceptance to an amount that
shall be not less than the number or amount of the Offered Securities that such Registered Holder elected to purchase pursuant to Section 16(ii) above multiplied by a fraction, (i) the numerator of which shall be the number or amount of
Offered Securities the Company actually proposes to issue, sell or exchange (including Offered Securities to be issued or sold to Registered Holders pursuant to this Section 16 prior to such reduction) and (ii) the denominator of which
shall be the original amount of the Offered Securities. In the event that any Registered Holder so elects to reduce the number or amount of Offered Securities specified in its Notice of Acceptance, the Company may not issue, sell or exchange more
than the reduced number or amount of the Offered Securities unless and until such securities have again been offered to the Registered Holders in accordance with Section 16(i) above. 

(v) Upon the closing of the issuance, sale or exchange of all or less than all of the Refused Securities, such Registered
Holder shall acquire from the Company, and the Company shall issue to such Registered Holder, the number or amount of Offered Securities specified in its Notice of Acceptance. The purchase by such Registered Holder of any Offered Securities is
subject in all cases to the preparation, execution and delivery by the Company and such Registered Holder of a separate purchase agreement relating to such Offered Securities reasonably satisfactory in form and substance to such Registered Holder
and its counsel. 

  
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 (vi) Any Offered Securities not acquired by a Registered Holder or other Persons
in accordance with this Section 16 may not be issued, sold or exchanged until they are again offered to such Registered Holder under the procedures specified in this Agreement. 

(vii) The Company and each Registered Holder agree that if any Registered Holder elects to participate in the Offer, neither
the Subsequent Placement Agreement with respect to such Offer nor any other transaction documents related thereto (collectively, the “Subsequent Placement Documents”) shall include any term or provision whereby such Registered
Holder shall be required to agree to any restrictions on trading as to any securities of the Company or be required to consent to any amendment to or termination of, or grant any waiver, release or the like under or in connection with, any agreement
previously entered into with the Company or any instrument received from the Company. 
 (viii) Notwithstanding anything to
the contrary in this Section 16 and unless otherwise agreed to by such Registered Holder, the Company shall either confirm in writing to such Registered Holder that the transaction with respect to the Subsequent Placement has been abandoned or
shall publicly disclose its intention to issue the Offered Securities, in either case, in such a manner such that such Registered Holder will not be in possession of any material, non-public information, by the fifth (5th) Business Day following delivery of the Offer Notice. If by such fifth (5th) Business Day, no public disclosure regarding a transaction
with respect to the Offered Securities has been made, and no notice regarding the abandonment of such transaction has been received by such Registered Holder, such transaction shall be deemed to have been abandoned and such Registered Holder shall
not be in possession of any material, non-public information with respect to the Company or any of its Subsidiaries. Should the Company decide to pursue such transaction with respect to the Offered Securities, the Company shall provide such
Registered Holder with another Offer Notice and such Registered Holder will again have the right of participation set forth in this Section 16. The Company shall not be permitted to deliver more than one such Offer Notice to such Registered
Holder in any sixty (60) day period, except as expressly contemplated by the last sentence of Section 16(ii). 

(ix) The restrictions contained in this Section 16 shall not apply in connection with the issuance of any Excluded
Securities or any issuances (or deemed issuances) pursuant to an ATM Facility. The Company shall not circumvent the provisions of this Section 16 by providing terms or conditions to one Registered Holder that are not provided to all. 

17. CERTAIN DEFINITIONS. For purposes of this Warrant, the following terms shall have the following meanings: 

17.1. “1934 Act” means the U.S. Securities Exchange Act of 1934, as amended. 

  
 33 

 17.2. “Adjustment Right” means any right granted with respect to any securities
issued in connection with, or with respect to, any issuance or sale (or deemed issuance or sale in accordance with Section 2) of shares of Common Stock (other than rights of the type described in Sections 2(b) and 3 hereof) that could result in
a decrease in the net consideration received by the Company in connection with, or with respect to, such securities (including, without limitation, any cash settlement rights, cash adjustment or other similar rights). 

17.3. “Approved Stock Plan” means any employee benefit or incentive plan which has been approved by the Board of Directors
of the Company prior to or subsequent to the date hereof pursuant to which shares of Common Stock, options to purchase Common Stock, stock appreciation rights, restricted shares of Common Stock, restricted stock units and other stock-based awards
may be issued to any employee, officer, director or consultant for services provided to the Company in their capacity as such. 
 17.4.
“Black Scholes Consideration Value” means the value of the applicable Option, Convertible Security or Adjustment Right (as the case may be) as of the date of issuance thereof calculated using the Black Scholes Option Pricing Model
obtained from the “OV” function on Bloomberg utilizing (i) an underlying price per share equal to the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the public announcement of the execution of
definitive documents with respect to the issuance of such Option, Convertible Security or Adjustment Right (as the case may be), (ii) a risk-free interest rate corresponding to the U.S. Treasury rate for a period equal to the remaining term of
such Option, Convertible Security or Adjustment Right (as the case may be) as of the date of issuance of such Option, Convertible Security or Adjustment Right (as the case may be), (iii) a zero cost of borrow and (iv) an expected
volatility equal to the greater of 100% and the 100 day volatility obtained from the HVT function on Bloomberg (determined utilizing a 360 day annualization factor) as of the Trading Day immediately following the date of issuance of such Option,
Convertible Security or Adjustment Right (as the case may be). 
 17.5. “Black Scholes Value” means the value of the
unexercised portion of this Warrant remaining on the date of the Holder’s request, which value is calculated using the Black Scholes Option Pricing Model obtained from the “OV” function on Bloomberg, L.P. utilizing (i) an
underlying price per share equal to the greater of (1) the highest closing sale price of the Common Stock during the period beginning on the Trading Day immediately preceding the earliest to occur of (x) the public disclosure of the
applicable Fundamental Transaction, (y) the consummation of the applicable Fundamental Transaction and (z) the date on which the Holder first became aware of the applicable Fundamental Transaction and ending on the Trading Day of the
Holder’s request and (2) the sum of the price per share being offered in cash in the applicable Fundamental Transaction (if any) plus the value of the non-cash consideration being offered in the applicable Fundamental Transaction (if any),
(ii) a strike price equal to the Exercise Price in effect on the date of the Holder’s request, (iii) a zero cost of borrow, (iv) a risk-free interest rate corresponding to the U.S. Treasury rate for a period equal to the greater
of (1) the remaining term of this Warrant as of the date of the Holder’s request and (2) the remaining term of this Warrant as of the date of consummation of the applicable Fundamental Transaction or as of the date of the
Holder’s request if such request is prior to the date of the consummation of the applicable Fundamental Transaction and (v) an expected volatility equal to the greater of 

  
 34 

 
100% and the 30-day volatility obtained from the HVT function on Bloomberg, L.P. (determined utilizing a 360 day annualization factor) as of the Trading Day immediately following the public
disclosure of the applicable Fundamental Transaction (or, solely to the extent such Fundamental Transaction is not disclosed to the public, the date of the consummation of the such Fundamental Transaction). 

17.6. “Bloomberg” means Bloomberg, L.P. 

17.7. “Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New
York are authorized or required by law to remain closed. 
 17.8. “Close of Business” means 5:00 p.m., New York City time.

 17.9. “Closing Bid Price” and “Closing Sale Price” means, for any security as of any date, the last
closing bid price and last closing trade price, respectively, for such security on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and does not designate the closing bid price
or the closing trade price, as the case may be, then the last bid price or the last trade price, respectively, of such security prior to 4:00 p.m., New York time, as reported by Bloomberg, or, if the Principal Market is not the principal securities
exchange or trading market for such security, the last closing bid price or last trade price, respectively, of such security on the principal securities exchange or trading market where such security is listed or traded as reported by Bloomberg, or
if the foregoing do not apply, the last closing bid price or last trade price, respectively, of such security in the over-the-counter market on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price or
last trade price, respectively, is reported for such security by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for such security as reported in the “pink sheets” by Pink Sheets LLC
(formerly the National Quotation Bureau, Inc.). If the Closing Bid Price or the Closing Sale Price cannot be calculated for a security on a particular date on any of the foregoing bases, the Closing Bid Price or the Closing Sale Price, as the case
may be, of such security on such date shall be the fair market value as determined by the Company in good faith. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction
during the applicable calculation period. 
 17.10. “Common Stock” means (i) shares of the Company’s common
stock, par value $0.01 per share and (ii) any capital stock into which such common stock shall have been changed or any share capital resulting from a reclassification of such common stock. 

17.11. “Common Stock Deemed Outstanding” means, at any given time, the number of shares of Common Stock actually outstanding
at such time, plus the number of shares of Common Stock issuable upon exercise, exchange or conversion of Options and Convertible Securities actually outstanding at such time , but excluding any shares of Common Stock owned or held by or for the
account of the Company or issuable exercise of the Warrants. 

  
 35 

 17.12. “Convertible Securities” means any stock or other security (other than
Options) that is at any time and under any circumstances, directly or indirectly, convertible into, exercisable or exchangeable for, or which otherwise entitles the holder thereof to acquire, any shares of Common Stock. 

17.13. “Eligible Market” means any national securities exchange securities exchange that has registered with the SEC under
Section 6 of the 1934 Act. 
 17.14. “Excluded Securities” means any (i) shares of Common Stock, Options, stock
appreciation rights, restricted shares of Common Stock, restricted stock units and other stock-based awards to directors, officers, employees or consultants of the Company in their capacity as such pursuant to an Approved Stock Plan (as defined
above); (ii) shares of Common Stock issued upon the conversion or exercise of Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) issued prior
to the date hereof; provided that the conversion price of any such Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) is not lowered, none of such
Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) are amended to increase the number of shares issuable thereunder and none of the terms or
conditions of any such Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) are otherwise materially changed in any manner that adversely affects any
of the Buyers; and (iii) the shares of Common Stock or Options issued to financial institutions or lessors in connection with commercial credit arrangements, equipment financings or similar transactions (excluding any shares of Common Stock
issuable upon conversion or exercise of any Convertible Securities). 
 17.15. “Expiration Date” means the date that is
the fifth (5th) anniversary of the Issuance Date or, if such date falls on a day other than a Business Day or on which trading does not take place on the Principal Market (a
“Holiday”), the next date that is not a Holiday. 
 17.16. “Fundamental Transaction” means that
(i) the Company shall, directly or indirectly, in one or more related transactions, (1) consolidate or merge with or into (whether or not the Company is the surviving corporation but except any merger solely to effect the migration of the
Company to a new jurisdiction of incorporation) any other Person, or (2) sell, lease, license, assign, transfer, convey or otherwise dispose of all or substantially all of its properties or assets to any other Person, (3) consummate a
stock or share purchase agreement or other business combination with any other Person whereby such other Person acquires more than 50% of the outstanding shares of Voting Stock of the Company (not including any shares of Voting Stock of the Company
held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock or share purchase agreement or other business combination), or (4) reorganize, recapitalize or
reclassify the Common Stock (except to effect the migration of the Company to a new jurisdiction of incorporation) or (ii) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the 1934
Act and the rules and the rules and regulations promulgated thereunder) is or shall become the “beneficial owner” (as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power
represented by issued and outstanding Voting Stock of the Company. 

  
 36 

 17.17. “Options” means any rights, warrants or options to subscribe for or
purchase shares of Common Stock or Convertible Securities. 
 17.18. “Parent Entity” of a Person means an entity that,
directly or indirectly, controls the applicable Person and whose common stock or equivalent equity security is quoted or listed on an Eligible Market, or, if there is more than one such Person or Parent Entity, the Person or Parent Entity with the
largest public market capitalization as of the date of consummation of the Fundamental Transaction. 
 17.19. “Person”
means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity or a government or any department or agency thereof. 

17.20. “Principal Market” means the Nasdaq Global Select Market. 

17.21. “Securities Purchase Agreement” means that certain Securities Purchase Agreement, dated as of April 4, 2012, by
and among the Company and the investors (the “Buyers”) referred to therein. 
 17.22. “Successor Entity”
means the Person (or, if so elected by the Holder, the Parent Entity) formed by, resulting from or surviving any Fundamental Transaction or the Person (or, if so elected by the Holder, the Parent Entity) with which such Fundamental Transaction shall
have been entered into. 
 17.23. “Trading Day” means any day on which the Common Stock is traded on the Principal Market,
or, if the Principal Market is not the principal trading market for the Common Stock, then on the principal securities exchange or securities market on which the Common Stock is then traded, provided that “Trading Day” shall not include
any day on which the Common Stock is scheduled to trade on such exchange or market for less than 4.5 hours or any day that the Common Stock is suspended from trading during the final hour of trading on such exchange or market (or if such exchange or
market does not designate in advance the closing time of trading on such exchange or market, then during the hour ending at 4:00 p.m., New York time). 

17.24. “Variable Rate Transaction” means a transaction in which the Company or any Subsidiary (i) issues or sells any
Common Stock, Convertible Securities and/or Options either (A) at a conversion, exercise or exchange rate or other price that is based upon and/or varies with the trading prices of or quotations for the shares of Common Stock at any time after
the initial issuance of such Common Stock, Convertible Securities and/or Options, or (B) with a conversion, exercise or exchange price that is subject to being reset at some future date after the initial issuance of such Common Stock,
Convertible Securities and/or Options or upon the occurrence of specified or contingent events directly or indirectly related to the business of the Company or the market for the Common Stock, other than pursuant to a customary “weighted
average” anti-dilution provision or (ii) enters into any agreement (including, without 

  
 37 

 
limitation, an equity line of credit or an “at-the-market” offering) whereby the Company or any Subsidiary may sell securities at a future determined price (other than standard and
customary “preemptive” or “participation” rights). 
 17.25. “Voting Stock” of a Person means capital
stock of such Person of the class or classes pursuant to which the holders thereof have the general voting power to elect, or the general power to appoint, at least a majority of the board of directors, managers or trustees of such Person
(irrespective of whether or not at the time capital stock of any other class or classes shall have or might have voting power by reason of the happening of any contingency). 

[signature page follows] 

  
 38 

 IN WITNESS WHEREOF, the Company has caused this Warrant to Purchase Common Stock to be
duly executed as of the Issuance Date set out above. 
  

			
	AMERICAN SUPERCONDUCTOR CORPORATION
		
	By:	 	  

	Name:	 	
	Title:	 	

 EXHIBIT A 

EXERCISE NOTICE 
 TO BE
EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS 
 WARRANT TO PURCHASE COMMON STOCK 

AMERICAN SUPERCONDUCTOR CORPORATION 

The undersigned holder hereby exercises the right to purchase
                     of the shares of Common Stock (“Warrant Shares”) of AMERICAN SUPERCONDUCTOR CORPORATION, a Delaware
corporation (the “Company”), evidenced by the attached Warrant to Purchase Common Stock (the “Warrant”). Capitalized terms used herein and not otherwise defined shall have the respective meanings set forth in the
Warrant. 
 1. Form of Exercise Price. The Holder intends that payment of the Exercise Price shall be made as: 

                     a “Cash
Exercise” with respect to                      Warrant Shares; and/or 

                     a “Cashless
Exercise” with respect to                      Warrant Shares. 

2. Payment of Exercise Price. In the event that the holder has elected a Cash Exercise with respect to some or all of the Warrant Shares to be
issued pursuant hereto, the holder shall pay the Aggregate Exercise Price in the sum of $         to the Company in accordance with the terms of the Warrant. 

3. Delivery of Warrant Shares. The Company shall deliver to the holder          Warrant Shares in
accordance with the terms of the Warrant. 
  

					
	Date:                  ,         
	
	  

	Name of Registered Holder
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

 ACKNOWLEDGMENT 

The Company hereby acknowledges this Exercise Notice and hereby directs American Stock Transfer & Trust Company, LLC to issue the
above indicated number of shares of Common Stock in accordance with the Transfer Agent Instructions dated November 13, 2014 from the Company and acknowledged and agreed to by American Stock Transfer & Trust Company, LLC. 

 

			
	AMERICAN SUPERCONDUCTOR CORPORATION
		
	By:	 	  

		 	Name:
		 	Title:

 EXHIBIT B 

ASSIGNMENT FORM 

AMERICAN SUPERCONDUCTOR CORPORATION 

(To assign the foregoing Warrant, execute this form and supply required information. Do not use this form to purchase shares.) 

FOR VALUE RECEIVED, the foregoing Warrant and all rights evidenced thereby are hereby assigned to 

 

							
	Name:	 		 		 	  

		 		 		 	(Please Print)
				
	Address:	 		 		 	  

		 		 		 	(Please Print)

  

			
	Dated:                  ,         
		
	Holder’s Signature:	 	  

		
	Holder’s Address:	 	  

 NOTE: The signature to this Assignment Form must correspond with the name as it appears on the face of the Warrant, without
alteration or enlargement or any change whatever. Officers of corporations and those acting in a fiduciary or other representative capacity should file proper evidence of authority to assign the foregoing Warrant.EX-4.2

 Exhibit 4.2 

[Form of Warrant] 

AMERICAN SUPERCONDUCTOR CORPORATION 

WARRANT TO PURCHASE COMMON STOCK 

CUSIP No.              

Warrant No.:              

Number of Shares of Common Stock:              

Date of Issuance: November 13, 2014 (the “Issuance Date”) 

American Superconductor Corporation, a Delaware corporation (the “Company”), hereby agrees that, for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,                     , the registered holder hereof or its permitted
assigns (the “Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at the Exercise Price (as defined below) then in effect, upon exercise of this Warrant to Purchase Common Stock (including any
Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof pursuant to Section 6, this “Warrant”), at any time or times until (but not after) 5:00 p.m., New York time, on the Expiration Date (as
defined below),                     
(                    ) fully paid nonassessable shares of Common Stock (as defined below) (the “Warrant Shares”). Except as
otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in Section 16. This Warrant is the warrant to purchase Common Stock issued pursuant to that certain Underwriting Agreement (the “Underwriting
Agreement”, and such Warrants, the “Registered Warrants”), dated as of November 7, 2014 (the “Offer Date”), by and between the Company and Cowen and Company, LLC and is being issued pursuant to the
Company’s Registration Statement on Form S-3 (File number 333-198851) (the “Registration Statement”). 
 1.
EXERCISE OF WARRANT. 
 (a) Mechanics of Exercise. Subject to the terms and conditions hereof and except as provided for in
Section 1.1.(b), this Warrant may be exercised by the Holder, in whole or in part, by delivery of a written notice, in the form attached hereto as Exhibit A (the “Exercise Notice”), of the Holder’s election to
exercise this Warrant. Within two (2) days following the Exercise Notice, the Holder shall make payment to the Company of an amount equal to the applicable Exercise Price multiplied by the number of Warrant Shares as to which this Warrant is
being exercised (the “Aggregate Exercise Price”) in cash or by wire transfer of immediately available funds, or provided the conditions for Cashless Exercise (as defined below) set forth in Section 1.1.(e) are satisfied, by
notifying the Company that this Warrant is being exercised pursuant to a Cashless Exercise. The Holder shall not be required to deliver the original Warrant in order to effect an exercise hereunder. Execution and delivery of the Exercise Notice with

 
respect to less than all of the Warrant Shares shall have the same effect as cancellation of the original Warrant and issuance of a new Warrant evidencing the right to purchase the remaining
number of Warrant Shares. On or before the first (1st) Business Day following the date on which the Company has received a valid Exercise Notice, the Company shall transmit by facsimile or
e-mail transmission an acknowledgment of confirmation of receipt of the Exercise Notice to the Holder and the Company’s transfer agent (the “Transfer Agent”). On or before the third (3rd) Business Day following the date on which the Company has received a valid Exercise Notice and provided that the Company has received payment of the Aggregate Exercise Price as provided above,
the Company shall (X) provided that the Transfer Agent is participating in The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program, upon the request of the Holder, credit such aggregate number of Warrant
Shares to which the Holder is entitled pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through its Deposit/Withdrawal at Custodian system, or (Y) if the Transfer Agent is not participating in the
DTC Fast Automated Securities Transfer Program, issue and dispatch by overnight courier to the address as specified in the Exercise Notice, a certificate, registered in the Company’s share register in the name of the Holder or its designee, for
the number of shares of Common Stock to which the Holder is entitled pursuant to such exercise. At the Close of Business on the date of delivery of a valid Exercise Notice and provided that the Company has received payment of the Aggregate Exercise
Price as provided above, the Holder shall be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this Warrant has been exercised, irrespective of the date such Warrant Shares are credited
to the Holder’s DTC account or the date of delivery of the certificates evidencing such Warrant Shares, as the case may be. If this Warrant is submitted in connection with any exercise pursuant to this Section 1.1.(a) and the number of
Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares being acquired upon an exercise, then the Company shall as soon as practicable and in no event later than three (3) Business Days
after any exercise and at its own expense, issue a new Warrant (in accordance with Section 6.1.(d)) representing the right to purchase the number of Warrant Shares purchasable immediately prior to such exercise under this Warrant, less the
number of Warrant Shares with respect to which this Warrant is exercised. No fractional shares of Common Stock will be issued upon the exercise of this Warrant, but rather the Company will make a cash payment to the Holder in lieu thereof based on
the Closing Sale Price on the Exercise Date; provided, however, that, in lieu of such cash payment, the number of shares of Common Stock to be issued may, at the Company’s option, be rounded up to the nearest whole number. Except
as set forth in Section 15, the Company shall pay any and all taxes which may be payable with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. No Exercise Notice shall be considered valid unless complete and
validly executed by the Holder unless deemed so by the Company. All determinations of the validity of an Exercise Notice shall be made by the Company in good faith. 

(b) Exercise of Warrants with Warrant Agent. Notwithstanding Section 1.1.(a), so long as the Warrant Agent maintains the Warrant
Register, Warrants shall be exercised in the manner set forth in Section 3.4 of the Warrant Agreement. 
 (c) Exercise Price.
For purposes of this Warrant, “Exercise Price” means $1.10, subject to adjustment as provided herein. 

  
 2 

 (d) Company’s Failure to Timely Deliver Securities. If the Company shall fail for
any reason or for no reason to issue to the Holder within three (3) Business Days of receipt of the Exercise Notice in compliance with the terms of this Section 1, a certificate for the number of shares of Common Stock to which the Holder
is entitled and register such shares of Common Stock on the Company’s share register or to credit the Holder’s balance account with DTC for such number of shares of Common Stock to which the Holder is entitled upon the Holder’s
exercise of this Warrant in each case as provided above, and if on or after such Trading Day the Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of shares of
Common Stock issuable upon such exercise that the Holder anticipated receiving from the Company, then the Company shall, within three (3) Business Days after the Holder’s request and in the Holder’s discretion, either (i) pay
cash to the Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased (the “Buy-In Price”), at which point the Company’s obligation
to deliver such certificate (and to issue such Warrant Shares) shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such Warrant Shares and pay cash to the Holder in an
amount equal to the excess (if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) the Closing Bid Price on the date of exercise. 

(e) Cashless Exercise. If an effective registration statement is available for the issuance of the Warrant Shares, the Warrants may
only be exercised through a cash exercise (a “Cash Exercise”). Notwithstanding anything contained herein to the contrary, in the event an effective registration statement is not then available for the issuance of the Warrant Shares,
the Holder may, in its sole discretion, exercise this Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company upon such exercise in payment of the Aggregate Exercise Price, elect instead
to receive upon such exercise the “Net Number” of shares of Common Stock determined according to the following formula (a “Cashless Exercise”): 
  

							
		 	Net Number =	 	 (A x B) - (A x C)
	  	
		 		 	D	  	

 For purposes of the foregoing formula: 

 

	 	A=	the total number of shares with respect to which this Warrant is then being exercised; 

  

	 	B=	the arithmetic average of the Closing Sale Prices of the shares of Common Stock for the five (5) consecutive Trading Days ending on the date immediately preceding the date of the Exercise Notice; 

 

	 	C=	the Exercise Price then in effect for the applicable Warrant Shares at the time of such exercise; and 

  

	 	D=	the Closing Sale Price on the date of the Exercise Notice. 

  
 3 

 (f) Rule 144. For purposes of Rule 144(d) promulgated under the Securities Act, as in
effect on the date hereof, it is intended that the Warrant Shares issued in a Cashless Exercise shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to have commenced, on the Issuance
Date. 
 (g) Disputes. In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the
Warrant Shares, the Company shall promptly issue to the Holder the number of Warrant Shares that are not disputed. 
 (h) Beneficial
Ownership Limitation. The Company shall not effect the exercise of this Warrant, and the Holder shall not have the right to exercise this Warrant, to the extent that after giving effect to such exercise, the Holder (together with the
Holder’s affiliates) would beneficially own in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing sentence, the
aggregate number of shares of Common Stock beneficially owned by the Holder and its affiliates shall include the number of shares of Common Stock issuable upon exercise of this Warrant with respect to which the determination of such sentence is
being made, but shall exclude shares of Common Stock which would be issuable upon (i) exercise of the remaining, unexercised portion of this Warrant beneficially owned by the Holder and its affiliates and (ii) exercise or conversion of the
unexercised or unconverted portion of any other securities of the Company beneficially owned by the Holder and its affiliates (including, without limitation, any convertible notes or convertible preferred stock or warrants) subject to a limitation
on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this paragraph, beneficial ownership shall be calculated in accordance with Section 13(d) of the 1934 Act.
For purposes of this Warrant, in determining the number of outstanding shares of Common Stock, the Holder may rely on the number of outstanding shares of Common Stock as reflected in (1) the Company’s most recent Annual Report on
Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other public filing with the Securities and Exchange Commission, as the case may be, (2) a more recent public announcement by the Company or (3) any
other notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding, in each case as of the date such report, announcement or notice speaks. For any reason at any time, upon the written or oral request of
the Holder, the Company shall within one (1) Business Day confirm in writing to the Holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of Common Stock shall be determined after giving
effect to the conversion or exercise of securities of the Company, including the Warrants, by the Holder and its affiliates since the date as of which such number of outstanding shares of Common Stock was reported. By written notice to the Company,
the Holder may from time to time increase or decrease the Maximum Percentage to any other percentage not in excess of 9.99% specified in such notice; provided that (i) any such increase will not be effective until the sixty-first (61st) day after such notice is delivered to the Company, and (ii) any such increase or decrease will apply only to the Holder and not to any other holder of the Warrants. For the avoidance of
doubt, to the extent the limitation set forth in this Section 1.1.(h) applies, the determination (i) of whether the exercise of this Warrant may be effected (vis-a-vis other options or convertible securities owned by the Holder or any of
its Affiliates) and (ii) of which such options or convertible securities shall be convertible, exercisable or exchangeable (as the case may be, as among all such 

  
 4 

 
securities owned by the Holder) shall, subject to such Maximum Percentage limitation, be determined on the basis of the first submission to the Company for conversion, exercise or exchange (as
the case may be). The provisions of this paragraph shall be construed and implemented in a manner other than in strict conformity with the terms of this Section 1.1.(h) to correct this paragraph (or any portion hereof) which may be defective or
inconsistent with the intended beneficial ownership limitation herein contained or to make changes or supplements necessary or desirable to properly give effect to such limitation. 

2. ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES. The Exercise Price and the number of Warrant Shares shall be adjusted
from time to time as follows: 
 (a) Stock Dividends and Splits. If the Company, at any time on or after the Offer Date,
(i) pays a stock dividend on one or more classes of its then outstanding shares of Common Stock or otherwise makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides (by any stock split,
stock dividend, recapitalization or otherwise) one or more classes of its then outstanding shares of Common Stock into a larger number of shares or (iii) combines (by combination, reverse stock split or otherwise) one or more classes of its
then outstanding shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock outstanding immediately before
such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately after such event. Any adjustment made pursuant to clause (i) of this paragraph shall become effective immediately after the record
date for the determination of stockholders entitled to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall become effective immediately at the Close of Business on the
effective date of such subdivision or combination. 
 (b) Pro Rata Distributions. If the Company, at any time while this Warrant is
outstanding, shall distribute to all holders of Common Stock (and not to the Holders) evidences of its indebtedness or assets (including cash and cash dividends) or rights or warrants to subscribe for or purchase any security (other than the Common
Stock which shall be subject to Section 2(a)) (a “Distribution”), then in each such case the Exercise Price shall be adjusted by multiplying the Exercise Price in effect immediately prior to the record date fixed for
determination of stockholders entitled to receive such distribution by a fraction of which the denominator shall be the average of the Closing Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and
including the Trading Day immediately preceding the record date mentioned above (the “Average Price”), and of which the numerator shall be such Average Price on such record date less the then per share fair market value at such
record date of the portion of such assets or evidence of indebtedness so distributed applicable to one outstanding share of Common Stock as determined by the Company in good faith. Such adjustment shall be made whenever any such distribution is made
and shall become effective immediately at the Close of Business on the record date mentioned above. Notwithstanding the foregoing, if any adjustment pursuant to this Section 2(b) would cause the Exercise Price of this Warrant to be less than
the par value of a share of Common Stock, in lieu of the foregoing adjustment, the Holder shall be entitled to participate in such Distribution (and any subsequent 

  
 5 

 
Distributions) to the same extent that the Holder would have participated therein if the Holder had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant
(without regard to any limitations or restrictions on exercise of this Warrant, including without limitation, the Maximum Percentage) immediately before the date of which a record is taken for such Distribution, or, if no such record is taken, the
date as of which the record holders of shares of Common Stock are to be determined for the participation in such Distribution (provided, however, that to the extent that the Holder’s right to participate in any such Distribution
would result in the Holder and the exceeding the Maximum Percentage, then the Holder shall not be entitled to participate in such Distribution to such extent (and shall not be entitled to beneficial ownership of such shares of Common Stock as a
result of such Distribution (and beneficial ownership) to such extent) and the portion of such Distribution shall be held in abeyance for the benefit of the Holder until such time or times, if ever, as its right thereto would not result in the
Holder and the other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be granted such Distribution (and any Distributions declared or made on such initial Distribution or on any subsequent Distribution
held similarly in abeyance) to the same extent as if there had been no such limitation). 
 (c) Number of Warrant Shares.
Simultaneously with any adjustment to the Exercise Price pursuant to Section 2(a) or Section 2(b), the number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately, so that
after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately prior to such adjustment (without regard to any limitations on
exercise contained herein). 
 (d) Adjustment Upon Issuance of Shares of Common Stock. If and whenever on or after the Issuance
Date, the Company issues or sells, or in accordance with this Section 2(d) is deemed to have issued or sold, any shares of Common Stock (including the issuance or sale of shares of Common Stock owned or held by or for the account of the
Company, but excluding any Excluded Securities issued or sold or deemed to have been issued or sold for consideration per share (the “New Issuance Price”) less than the Exercise Price in effect immediately prior to such issue or
sale or deemed issuance or sale (such Exercise Price then in effect is referred to as the “Applicable Price”, and the foregoing a “Dilutive Issuance”) (such number being appropriately adjusted to reflect the
occurrence of any event described in Section 2(a) or Section 2(b)), then, immediately after such Dilutive Issuance, the Exercise Price then in effect shall be reduced to an amount equal to the product of (A) the Applicable Price and
(B) the quotient determined by dividing (1) the sum of (I) the product derived by multiplying the Applicable Price and the number of shares of Common Stock Deemed Outstanding immediately prior to such Dilutive Issuance plus (II) the
consideration, if any, received by the Company upon such Dilutive Issuance, by (2) the product derived by multiplying (I) the Applicable Price by (II) the number of shares of Common Stock Deemed Outstanding immediately after such Dilutive
Issuance. For all purposes of the foregoing (including, without limitation, determining the adjusted Exercise Price, the consideration per share and the New Issuance Price under this Section 2(d), the following shall be applicable: 

  
 6 

 (i) Issuance of Options. If the Company in any manner grants or sells any
Options and the lowest price per share for which one share of Common Stock is issuable upon the exercise of any such Option or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such Option is less than
the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued and sold by the Company at the time of the granting or sale of such Option for such price per share. For purposes of this
Section 2(d)(i), the “lowest price per share for which one share of Common Stock is issuable upon the exercise of any such Options or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such
Option” shall be equal to (1) the lower of (x) the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to any one share of Common Stock upon the granting or sale of such Option, upon
exercise of such Option and upon conversion, exercise or exchange of any Convertible Security issuable upon exercise of such Option and (y) the lowest exercise price set forth in such Option for which one share of Common Stock is issuable upon
the exercise of any such Options or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such Option minus (2) the sum of all amounts paid or payable to the holder of such Option (or any other
Person) upon the granting or sale of such Option, upon exercise of such Option and upon conversion, exercise or exchange of any Convertible Security issuable upon exercise of such Option plus the value of any other consideration received or
receivable by, or benefit conferred on, the holder of such Option (or any other Person). Except as contemplated below, no further adjustment of the Exercise Price shall be made upon the actual issuance of such shares of Common Stock or of such
Convertible Securities upon the exercise of such Options or upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities. 

(ii) Issuance of Convertible Securities. If the Company in any manner issues or sells any Convertible Securities and
the lowest price per share for which one share of Common Stock is issuable upon the conversion, exercise or exchange thereof is less than the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued
and sold by the Company at the time of the issuance or sale of such Convertible Securities for such price per share. For the purposes of this Section 2(d)(ii), the “lowest price per share for which one share of Common Stock is issuable
upon the conversion, exercise or exchange thereof” shall be equal to (1) the lower of (x) the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to one share of Common Stock upon the
issuance or sale of the Convertible Security and upon conversion, exercise or exchange of such Convertible Security and (y) the lowest conversion price set forth in such Convertible Security for which one share of Common Stock is issuable upon
conversion, exercise or exchange thereof minus (2) the sum of all amounts paid or payable to the holder of such Convertible Security (or any other Person) upon the issuance or sale of such Convertible Security plus the value of any other

  
 7 

 
consideration received or receivable by, or benefit conferred on, the holder of such Convertible Security (or any other Person). Except as contemplated below, no further adjustment of the
Exercise Price shall be made upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities, and if any such issue or sale of such Convertible Securities is made upon exercise of any
Options for which adjustment of this Warrant has been or is to be made pursuant to other provisions of this Section 2(d), except as contemplated below, no further adjustment of the Exercise Price shall be made by reason of such issue or sale.

 (iii) Change in Option Price or Rate of Conversion. If the purchase or exercise price provided for in any Options
referred to in Section 2(d)(i), the additional consideration, if any, payable upon the issue, conversion, exercise or exchange of any Convertible Securities referred to in Section 2(d)(i) or 2(d)(ii), or the rate at which any Convertible
Securities referred to in Section 2(d)(i) or 2(d)(ii) are convertible into or exercisable or exchangeable for shares of Common Stock increases or decreases at any time, the Exercise Price in effect at the time of such increase or decrease shall
be adjusted to the Exercise Price which would have been in effect at such time had such Options or Convertible Securities provided for such increased or decreased purchase price, additional consideration or increased or decreased conversion rate, as
the case may be, at the time initially granted, issued or sold. For purposes of this Section 2(d)(iii), if the terms of any Option or Convertible Security that was outstanding as of the date of issuance of this Warrant are increased or
decreased in the manner described in the immediately preceding sentence, then such Option or Convertible Security and the shares of Common Stock deemed issuable upon exercise, conversion or exchange thereof shall be deemed to have been issued as of
the date of such increase or decrease. On the expiration of any Options referred to in Section 2(d)(i) or any Convertible Securities referred to in Section 2(d)(ii), or the termination of any such right to exercise, convert or exchange
such Options or Convertible Securities, the Applicable Price then in effect hereunder shall forthwith be increased to the Applicable Price which would have been in effect at the time of such expiration or termination had such Options or Convertible
Securities, to the extent outstanding immediately prior to such expiration or termination, never been issued. 
 (iv)
Calculation of Consideration Received. If any Option or Convertible Security or Adjustment Right is issued in connection with the issuance or sale or deemed issuance or sale of any other securities of the Company, together comprising one
integrated transaction, (x) such Option or Convertible Security (as applicable) or Adjustment Right (as applicable) will be deemed to have been issued for consideration equal to the Black Scholes Consideration Value thereof and (y) the
other securities issued or sold or deemed to have been issued or sold in such integrated transaction shall be deemed to have been issued for consideration equal to the difference of (I) the aggregate consideration received or receivable by the
Company minus (II) the Black 

  
 8 

 
Scholes Consideration Value of each such Option or Convertible Security (as applicable) or Adjustment Right (as applicable). If any shares of Common Stock, Options or Convertible Securities are
issued or sold or deemed to have been issued or sold for cash, the consideration received therefor will be deemed to be the net amount of consideration received by the Company therefor. If any shares of Common Stock, Options or Convertible
Securities are issued or sold for a consideration other than cash, the amount of such consideration received by the Company will be the fair value of such consideration, except where such consideration consists of publicly traded securities, in
which case the amount of consideration received by the Company for such securities will be the arithmetic average of the VWAPs of such security for each of the five (5) Trading Days immediately preceding the date of receipt. If any shares of
Common Stock, Options or Convertible Securities are issued to the owners of the non-surviving entity in connection with any merger in which the Company is the surviving entity, the amount of consideration therefor will be deemed to be the fair value
of such portion of the net assets and business of the non-surviving entity as is attributable to such shares of Common Stock, Options or Convertible Securities, as the case may be. The fair value of any consideration other than cash or publicly
traded securities will be determined jointly by the Company and the Holder. If such parties are unable to reach agreement within ten (10) days after the occurrence of an event requiring valuation (the “Valuation Event”), the
fair value of such consideration will be determined within five (5) Trading Days after the tenth (10th) day following such Valuation Event by an independent, reputable appraiser jointly selected by the Company and the Holder. The
determination of such appraiser shall be final and binding upon all parties absent manifest error and the fees and expenses of such appraiser shall be borne by the Company. 

(v) Notice of At-The-Market Draws. Solely with respect to issuances or deemed issuances of shares of Common Stock of
the Company under any “at-the-market” or similar arrangement pursuant to which the Company issues Common Stock (an “ATM Facility”), but specifically excluding any “equity line of credit” or other similar
arrangement, the Company shall notify the Holder of any reductions in the Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility as follows: (x) with respect to any reduction in the
Exercise Price, in the aggregate, of at least $0.05, within one (1) Business Day of such reduction in the Exercise Price or (y) otherwise, with respect to any reduction in the Exercise Price in any calendar month, on the first Business Day
of the immediately subsequent calendar month. For the avoidance of doubt, (i) no reduction in the Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility shall occur during the course of a
calendar month until the amount of such reduction in Exercise Price otherwise required by Section 2(d) as a result of such issuances or deemed issuances during such calendar month shall be at least $0.05 and (ii) except as set forth in the
preceding clause (i), reductions in Exercise Price required by Section 2(d) as a result of issuances or deemed issuances under an ATM facility shall only be determined at the end of each calendar month and only

  
 9 

 
with respect to the issuances or deemed issuances under such ATM facility since the later of (x) the end of the preceding calendar month or (ii) the last adjustment made pursuant to the
preceding clause (i). For purposes hereof, any issuance or sale, or deemed issuance or sale, of shares of Common Stock in a calendar month under an ATM Facility shall not be aggregated with any such issuance or sale on any other calendar month. 

(vi) Record Date. If the Company takes a record of the holders of shares of Common Stock for the purpose of entitling
them (A) to receive a dividend or other distribution payable in shares of Common Stock, Options or in Convertible Securities or (B) to subscribe for or purchase shares of Common Stock, Options or Convertible Securities, then such record
date will be deemed to be the date of the issue or sale of the shares of Common Stock deemed to have been issued or sold upon the declaration of such dividend or the making of such other distribution or the date of the granting of such right of
subscription or purchase (as the case may be). 
 (e) Calculations. All calculations under this Section 2 shall be made by
rounding to the nearest cent or the nearest 1/100th of a share, as applicable. 
 3.
FUNDAMENTAL TRANSACTIONS. 
 (a) Fundamental Transactions. If a Fundamental Transaction occurs as a result of which the
Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets (including cash or any combination thereof) (any such Fundamental Transaction, a “Share Exchange Event”; any such stock, other
securities or other property or assets, “Reference Property”; and the amount of Reference Property that a holder of one share of Common Stock immediately prior to such Share Exchange Event would have been entitled to receive upon
the occurrence of such Share Exchange Event, a “Reference Property Unit”), then from and after the effective time of such Share Exchange Event, upon exercise of this Warrant, for each share of Common Stock that the Company would
otherwise be obligated to deliver with respect to such exercise, the Company will instead deliver a Reference Property Unit. If such Share Exchange Event causes the Common Stock to be converted into, or exchanged for, the right to receive more than
a single type of consideration (determined based in part upon any form of stockholder election), then (i) the Reference Property shall be deemed to be (a) the weighted average of the types and amounts of consideration received by the
holders of Common Stock that affirmatively make such an election or (b) if no holders of the Common Stock affirmatively make such an election, the types and amounts of consideration actually received by the holders of the Common Stock, and
(ii) a Reference Property Unit shall refer to the consideration referred to in clause (i) attributable to one share of Common Stock. The Company shall not enter into or be party to such a Share Exchange Event unless the Successor Entity
assumes in writing all of the obligations of the Company under this Warrant in accordance with the provisions of this Section 3.1.(a), including agreements to deliver to the Holder in exchange for this Warrant a security of the Successor Entity
evidenced by a written instrument substantially similar in form and substance to this Warrant, including, without limitation, which is exercisable for a corresponding number of Reference Property Units equivalent to the number

  
 10 

 
of shares of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to any limitations on the exercise of this Warrant) prior to such Share Exchange Event, and with
an exercise price which applies the Exercise Price hereunder to such Reference Property Units. Upon the consummation of each such Share Exchange Event, the Successor Entity shall succeed to, and be substituted for (so that from and after the date of
the applicable Share Exchange Event, the provisions of this Warrant referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and power of the Company and shall assume all of the obligations of
the Company under this Warrant with the same effect as if such Successor Entity had been named as the Company herein. Notwithstanding the foregoing, the Holder may elect, at its sole option, by delivery of written notice to the Company to waive this
Section 3.1.(a) to permit the Share Exchange Event without the assumption of this Warrant by the Successor Entity. In addition, in the event of a Fundamental Transaction, at the request of the Holder delivered at any time commencing on the
earliest to occur of (x) the public disclosure of any Fundamental Transaction, (y) the consummation of any Fundamental Transaction and (z) the Holder first becoming aware of any Fundamental Transaction through the thirtieth (30th) day after the later of (x) the date of such Fundamental Transaction and (y) the date of the public disclosure of the consummation of such Fundamental Transaction by the Company
pursuant to a Current Report on Form 8-K filed with the SEC, the Company (or the Successor Entity) shall purchase this Warrant from the Holder by paying to the Holder, within five (5) Business Days after such request, cash in an amount equal to
the Black Scholes Value of the remaining unexercised portion of this Warrant outstanding on the date of the consummation of such Fundamental Transaction. 

(b) Application. The provisions of this Section 3 shall apply similarly and equally to successive Fundamental Transactions and
shall be applied as if this Warrant (and any such subsequent warrants) were fully exercisable and without regard to any limitations on the exercise of this Warrant (provided that the Holder shall continue to be entitled to the benefit of the Maximum
Percentage, applied however with respect to shares of capital stock registered under the 1934 Act and thereafter receivable upon exercise of this Warrant (or any such other warrant)). 

4. NONCIRCUMVENTION. The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of
Incorporation or Bylaws, avoid or seek to avoid the observance or performance of any of the terms of this Warrant, and will at all times in good faith carry out all the provisions of this Warrant and take all action as may be required to protect the
rights of the Holder provided for herein. Without limiting the generality of the foregoing, the Company (i) shall not increase the par value of any shares of Common Stock receivable upon the exercise of this Warrant above the Exercise Price
then in effect, (ii) shall take all such actions as may be necessary or appropriate in order that the Company may validly and legally issue fully paid and nonassessable shares of Common Stock upon the exercise of this Warrant, and
(iii) shall, so long as this Warrant is outstanding, take all action necessary to reserve and keep available out of its authorized and unissued shares of Common Stock, solely for the purpose of effecting the exercise of this Warrant, 100% of
the number of shares of Common Stock issuable upon exercise of this Warrant then outstanding (without regard to any limitations on exercise). 

  
 11 

 5. WARRANT HOLDER NOT DEEMED A STOCKHOLDER. The Holder, solely in such Person’s
capacity as a holder of this Warrant, shall not be entitled to vote or receive dividends or be deemed the holder of share capital of the Company for any purpose, nor shall anything contained in this Warrant be construed to confer upon the Holder,
solely in such Person’s capacity as the Holder of this Warrant, any of the rights of a stockholder of the Company or any right to vote, give or withhold consent to any corporate action (whether any reorganization, issue of stock,
reclassification of stock, consolidation, merger, conveyance or otherwise), receive notice of meetings, receive dividends or subscription rights, or otherwise, prior to the issuance to the Holder of the Warrant Shares which such Person is then
entitled to receive upon the due exercise of this Warrant. In addition, nothing contained in this Warrant shall be construed as imposing any obligations on the Holder to purchase any securities (upon exercise of this Warrant or otherwise) or as a
stockholder of the Company, whether such obligations are asserted by the Company or by creditors of the Company. 
 6. REISSUANCE OF
WARRANTS. 
 (a) Transfer of Warrant. Subject to Section 6(e), if this Warrant is to be transferred, the Holder shall
surrender this Warrant to the Company or its designated agent and deliver the completed and executed Assignment Form, in the form attached hereto as Exhibit B, whereupon the Company or such agent will forthwith issue and deliver upon the
order of the Holder a new Warrant (in accordance with Section 6.1.(d)), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by the Holder and, if less than the total number of
Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 6.1.(d)) to the Holder representing the right to purchase the number of Warrant Shares not being transferred. 

(b) Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the Company of the loss,
theft, destruction or mutilation of this Warrant, and, in the case of loss, theft or destruction, of any indemnification undertaking by the Holder to the Company in customary form and, in the case of mutilation, upon surrender and cancellation of
this Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 6.1.(d)) representing the right to purchase the Warrant Shares then underlying this Warrant. 

(c) Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal office
of the Company or such other address as it may designate, including the address of its designated agent, for a new Warrant or Warrants (in accordance with Section 6.1.(d)) representing in the aggregate the right to purchase the number of
Warrant Shares then underlying this Warrant, and each such new Warrant will represent the right to purchase such portion of such Warrant Shares as is designated by the Holder at the time of such surrender; provided, however, that no
Warrants for fractional shares of Common Stock shall be given. 
 (d) Issuance of New Warrants. Whenever the Company is required to
issue a new Warrant pursuant to the terms of this Warrant, such new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant, the

  
 12 

 
right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being issued pursuant to Section 6.1.(a) or Section 6.1.(c), the Warrant Shares
designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrants issued in connection with such issuance, does not exceed the number of Warrant Shares then underlying this Warrant),
(iii) shall have an issuance date, as indicated on the face of such new Warrant which is the same as the Issuance Date, and (iv) shall have the same rights and conditions as this Warrant. 

(e) Transfer of Warrant with Warrant Agent. Notwithstanding this Section 6, so long as the Warrant Agent maintains the Warrant
Register, this Warrant shall be transferred in the manner, and subject to the terms and conditions set forth in Section 5 of the Warrant Agreement. 

7. WARRANT AGREEMENT. This Warrant is issued under and in accordance with a Warrant Agreement dated as of November 13, 2014 (the
“Warrant Agreement”), between the Company and American Stock Transfer & Trust Company (the “Warrant Agent,” which term includes any successor Warrant Agent under the Warrant Agreement), and is subject to
the terms and provisions contained in the Warrant Agreement, to all of which terms and provisions the beneficial owners of the Warrants and the Holders consent by acceptance hereof. The Warrant Agreement is hereby incorporated herein by reference
and made a part hereof. Reference is hereby made to the Warrant Agreement for a statement of the respective rights, limitations of rights, duties and obligations of the Company, the Warrant Agent and the Holder and beneficial owners of the Warrants.
A copy of the Warrant Agreement may be obtained for inspection by the Holder upon written request to the Company at American Superconductor Corporation, 64 Jackson Road, Devens, MA 01434, Attention: David Henry. 

8. NOTICES. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in
writing, will be mailed (a) if within the domestic United States by first-class registered or certified airmail, or nationally recognized overnight express courier, postage prepaid, or by facsimile or (b) if delivered from outside the
United States, by International Federal Express or facsimile and will be deemed given (i) if delivered by first-class registered or certified mail domestic, three (3) Business Days after so mailed, (ii) if delivered by nationally
recognized overnight carrier, one (1) Business Day after so mailed, (iii) if delivered by International Federal Express, two (2) Business Days after so mailed and (iv) if delivered by facsimile, upon electronic confirmation of
receipt, and will be delivered and addressed as follows: 
  

	 	(i)	if to the Company, to: 

 American Superconductor Corporation 

64 Jackson Road 
 Devens, MA
01434 
 Attention: David Henry 

Telephone: (978) 842-3000 

Email: David.Henry@amsc.com 

and 
  

	 	(ii)	if to the Holder, at the address of the Holder appearing on the Warrant Register (as defined below). 

  
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 The Company shall register this Warrant or cause this Warrant to be registered, upon records to
be maintained by the Warrant Agent for that purpose (the “Warrant Register”), in the name of the record Holder (which shall include the initial Holder or, as the case may be, any registered assignee to which this Warrant is
permissibly assigned hereunder from time to time). The Company may deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other
purposes, absent actual notice to the contrary. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance with the Warrant Register. The Company shall provide the Holder
with prompt written notice of all actions taken pursuant to this Warrant, including in reasonable detail a description of such action and the reason therefor. Without limiting the generality of the foregoing, the Company will give written notice to
the Holder (i) immediately upon each adjustment of the Exercise Price and the number of Warrant Shares, setting forth in reasonable detail, and certifying, the calculation of such adjustment(s) and (ii) at least fifteen (15) days
prior to the date on which the Company closes its books or takes a record (A) with respect to any dividend or distribution upon the shares of Common Stock, (B) with respect to any grants, issuances or sales of any rights to purchase stock,
warrants, securities or other property to all holders of shares of Common Stock or (C) for determining rights to vote with respect to any Fundamental Transaction, dissolution or liquidation, provided in each case that such information shall be
made known to the public prior to or in conjunction with such notice being provided to the Holder and (iii) at least ten (10) Trading Days prior to the consummation of any Fundamental Transaction. 

9. AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant may be amended and the Company may take
any action herein prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent of the Holder. The foregoing notwithstanding, the Company may extend the Expiration Date and reduce
the Exercise Price without the consent of the Holder. 
 10. SEVERABILITY. If any provision of this Warrant is prohibited by law or
otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and
enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Warrant so long as this Warrant as so modified continues to express, without material change, the original
intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or
the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect
of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 

  
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 11. GOVERNING LAW. This Warrant shall be governed by and construed and enforced in
accordance with, and all questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any choice of law or conflict of law
provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. The Company hereby irrevocably submits to the exclusive jurisdiction
of the state and federal courts sitting in The City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such
suit, action or proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Nothing contained herein shall be deemed or operate to preclude the Holder from bringing
suit or taking other legal action against the Company in any other jurisdiction to collect on the Company’s obligations to the Holder or to enforce a judgment or other court ruling in favor of the Holder. THE COMPANY HEREBY IRREVOCABLY
WAIVES ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

12. CONSTRUCTION; HEADINGS. This Warrant shall be deemed to be jointly drafted by the Company and the Holder and shall not be construed
against any Person as the drafter hereof. The headings of this Warrant are for convenience of reference and shall not form part of, or affect the interpretation of, this Warrant. 

13. DISPUTE RESOLUTION. In the case of a dispute as to the determination of the Exercise Price, the Closing Sale Price, the Closing Bid
Price, the Average Price or fair market value or the arithmetic calculation of the Warrant Shares (as the case may be), the Company or the Holder (as the case may be) shall submit the disputed determinations or arithmetic calculations (as the case
may be) via facsimile or electronically via .pdf format (i) within two (2) Business Days after receipt of the applicable notice giving rise to such dispute to the Company or the Holder (as the case may be) or (ii) if no notice
gave rise to such dispute, at any time after the Holder learned of the circumstances giving rise to such dispute. If the Holder and the Company are unable to agree upon such determination or calculation (as the case may be) of the Exercise Price,
the Closing Sale Price, the Closing Bid Price, the Average Price or fair market value or the number of Warrant Shares (as the case may be) within three (3) Business Days of such disputed determination or arithmetic calculation being submitted
to the Company or the Holder (as the case may be), then the Company shall, within two (2) Business Days submit via facsimile or electronically via .pdf format (a) the disputed determination of the Exercise Price, the Closing Sale
Price, the Closing Bid Price, the Average Price or fair market value (as the case may be) to an independent, reputable investment bank selected by the Company and 

  
 15 

 
reasonably acceptable to the Holder or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant. The Company shall cause at its
expense the investment bank or the accountant (as the case may be) to perform the determinations or calculations (as the case may be) and notify the Company and the Holder of the results no later than ten (10) Business Days from the time it
receives such disputed determinations or calculations (as the case may be). Such investment bank’s or accountant’s determination or calculation (as the case may be) shall be binding upon all parties absent demonstrable error. 

14. REMEDIES, OTHER OBLIGATIONS, BREACHES AND INJUNCTIVE RELIEF. The remedies provided in this Warrant shall be cumulative and in
addition to all other remedies available under this Warrant, at law or in equity (including a decree of specific performance and/or other injunctive relief), and nothing herein shall limit the right of the Holder to pursue actual damages for any
failure by the Company to comply with the terms of this Warrant. The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to the Holder and that the remedy at law for any such breach may be inadequate.
The Company therefore agrees that, in the event of any such breach or threatened breach, the holder of this Warrant shall be entitled, in addition to all other available remedies, to an injunction restraining any breach, without the necessity of
showing economic loss and without any bond or other security being required. The Company shall provide all information and documentation to the Holder that is requested in writing by the Holder to enable the Holder to confirm the Company’s
compliance with the terms and conditions of this Warrant. Subject to Section 15, the issuance of shares and certificates for shares as contemplated hereby upon the exercise of this Warrant shall be made without charge to the Holder or such
shares for any issuance tax or other costs in respect thereof. 
 15. TRANSFER. This Warrant may be offered for sale, sold,
transferred or assigned without the consent of the Company. The Holder shall be responsible for all taxes payable in connection with any such sale, transfer or assignment 

16. Participation Right in Variable Rate Transactions. At any time during the period commencing on the Offer Date and ending on the
first anniversary of the Offer Date (the “Participation Right Period”), neither the Company nor any of its Subsidiaries shall, directly or indirectly, effect any Variable Rate Transaction during the Participation Right Period (each,
a “Subsequent Placement”, unless the Company shall have first complied with this Section 16. The Company and the Holder acknowledge and agree that the right set forth in this Section 16 is a right granted by the Company,
separately and exclusively, to the sole initial purchaser of Registered Warrants from the underwriter (or its agents and co-underwriters) pursuant to the Underwriting Agreement (each a “Registered Holder”) and that such right is not
transferable to any subsequent Holder. 
 (i) At least five (5) Trading Days prior to any proposed or intended
Subsequent Placement, the Company shall deliver to each Registered Holder a written notice (each such notice, a “Pre-Notice”), which Pre-Notice shall not contain any information (including, without limitation, material, non-public
information) other than: (i) if the proposed Offer Notice (as defined below) constitutes or contains material, non-public 

  
 16 

 
information, a statement asking whether the Investor is willing to accept material non-public information or (ii) if the proposed Offer Notice does not constitute or contain material,
non-public information, (A) a statement that the Company proposes or intends to effect a Subsequent Placement, (B) a statement that the statement in clause (A) above does not constitute material, non-public information and (C) a
statement informing such Registered Holder that it is entitled to receive an Offer Notice (as defined below) with respect to such Subsequent Placement upon its written request. Upon the written request of a Registered Holder within three
(3) Trading Days after the Company’s delivery to such Registered Holder of such Pre-Notice, and only upon a written request by such Registered Holder, the Company shall promptly, but no later than one (1) Trading Day after such
request, deliver to such Registered Holder an irrevocable written notice (the “Offer Notice”) of any proposed or intended issuance or sale or exchange (the “Offer”) of the securities being offered (the
“Offered Securities”) in a Subsequent Placement, which Offer Notice shall (w) identify and describe the Offered Securities, (x) describe the price and other terms upon which they are to be issued, sold or exchanged, and
the number or amount of the Offered Securities to be issued, sold or exchanged, (y) identify the Persons (if known) to which or with which the Offered Securities are to be offered, issued, sold or exchanged and (z) offer to issue and sell
to or exchange with such Registered Holder in accordance with the terms of the Offer such Registered Holder’s pro rata portion of the Offered Securities, provided that the number of Offered Securities which such Registered Holder shall have the
right to subscribe for under this Section 16 shall be (a) based on such Registered Holder’s pro rata portion of such Registered Warrants initially acquired from the Underwriter (or its agents or co-underwriters) (the “Basic
Amount”), and (b) with respect to each Registered Holder that elects to purchase its Basic Amount, any additional portion of the Offered Securities attributable to the Basic Amounts of other Registered Holders as such Registered Holder
shall indicate it will purchase or acquire should the other Registered Holders subscribe for less than their Basic Amounts (the “Undersubscription Amount”). 

(ii) To accept an Offer, in whole or in part, such Registered Holder must deliver a written notice to the Company prior to the
end of the third (3rd) Business Day after such Registered Holder’s receipt of the Offer Notice (the “Offer Period”), setting forth the portion of such Registered
Holder’s Basic Amount that such Registered Holder elects to purchase and, if such Registered Holder shall elect to purchase all of its Basic Amount, the Undersubscription Amount, if any, that such Registered Holder elects to purchase (in either
case, the “Notice of Acceptance”). If the Basic Amounts subscribed for by all Registered Holders are less than the total of all of the Basic Amounts, then such Registered Holder who has set forth an Undersubscription Amount in its
Notice of Acceptance shall be entitled to purchase, in addition to the Basic Amounts subscribed for, the Undersubscription Amount it has subscribed for; provided, however, if the Undersubscription Amounts subscribed for exceed the difference between
the total of all the Basic Amounts and the Basic Amounts subscribed for (the “Available Undersubscription Amount”), such Registered Holder who has subscribed for any Undersubscription Amount shall be entitled to purchase only that
portion of the Available Undersubscription Amount as the Basic Amount of such Registered Holder bears to the total Basic Amounts of all Registered Holders that have subscribed for Undersubscription 

  
 17 

 
Amounts, subject to rounding by the Company to the extent it deems reasonably necessary. Notwithstanding the foregoing, if the Company desires to modify or amend the terms and conditions of the
Offer prior to the expiration of the Offer Period, the Company may deliver to each Registered Holder a new Offer Notice and the Offer Period shall expire on the third (3rd) Business Day after
such Registered Holder’s receipt of such new Offer Notice. 
 (iii) The Company shall have five (5) Business Days
from the expiration of the Offer Period above (i) to offer, issue, sell or exchange all or any part of such Offered Securities as to which a Notice of Acceptance has not been given by a Registered Holder (the “Refused
Securities”) pursuant to a definitive agreement(s) (the “Subsequent Placement Agreement”), but only to the offerees described in the Offer Notice (if so described therein) and only upon terms and conditions (including,
without limitation, unit prices and interest rates) that are not more favorable to the acquiring Person or Persons or less favorable to the Company than those set forth in the Offer Notice and (ii) to publicly announce (a) the execution of
such Subsequent Placement Agreement, and (b) either (x) the consummation of the transactions contemplated by such Subsequent Placement Agreement or (y) the termination of such Subsequent Placement Agreement, which shall be filed with
the SEC on a Current Report on Form 8-K with such Subsequent Placement Agreement and any documents contemplated therein filed as exhibits thereto. 

(iv) In the event the Company shall propose to sell less than all the Refused Securities (any such sale to be in the manner and
on the terms specified in Section 16(iii) above), then such Registered Holder may, at its sole option and in its sole discretion, reduce the number or amount of the Offered Securities specified in its Notice of Acceptance to an amount that
shall be not less than the number or amount of the Offered Securities that such Registered Holder elected to purchase pursuant to Section 16(ii) above multiplied by a fraction, (i) the numerator of which shall be the number or amount of
Offered Securities the Company actually proposes to issue, sell or exchange (including Offered Securities to be issued or sold to Registered Holders pursuant to this Section 16 prior to such reduction) and (ii) the denominator of which
shall be the original amount of the Offered Securities. In the event that any Registered Holder so elects to reduce the number or amount of Offered Securities specified in its Notice of Acceptance, the Company may not issue, sell or exchange more
than the reduced number or amount of the Offered Securities unless and until such securities have again been offered to the Registered Holders in accordance with Section 16(i) above. 

(v) Upon the closing of the issuance, sale or exchange of all or less than all of the Refused Securities, such Registered
Holder shall acquire from the Company, and the Company shall issue to such Registered Holder, the number or amount of Offered Securities specified in its Notice of Acceptance. The purchase by such Registered Holder of any Offered Securities is
subject in all cases to the preparation, execution and delivery by the Company and such Registered Holder of a separate purchase agreement relating to such Offered Securities reasonably satisfactory in form and substance to such Registered Holder
and its counsel. 

  
 18 

 (vi) Any Offered Securities not acquired by a Registered Holder or other Persons
in accordance with this Section 16 may not be issued, sold or exchanged until they are again offered to such Registered Holder under the procedures specified in this Agreement. 

(vii) The Company and each Registered Holder agree that if any Registered Holder elects to participate in the Offer, neither
the Subsequent Placement Agreement with respect to such Offer nor any other transaction documents related thereto (collectively, the “Subsequent Placement Documents”) shall include any term or provision whereby such Registered
Holder shall be required to agree to any restrictions on trading as to any securities of the Company or be required to consent to any amendment to or termination of, or grant any waiver, release or the like under or in connection with, any agreement
previously entered into with the Company or any instrument received from the Company. 
 (viii) Notwithstanding anything to
the contrary in this Section 16 and unless otherwise agreed to by such Registered Holder, the Company shall either confirm in writing to such Registered Holder that the transaction with respect to the Subsequent Placement has been abandoned or
shall publicly disclose its intention to issue the Offered Securities, in either case, in such a manner such that such Registered Holder will not be in possession of any material, non-public information, by the fifth (5th) Business Day following delivery of the Offer Notice. If by such fifth (5th) Business Day, no public disclosure regarding a transaction
with respect to the Offered Securities has been made, and no notice regarding the abandonment of such transaction has been received by such Registered Holder, such transaction shall be deemed to have been abandoned and such Registered Holder shall
not be in possession of any material, non-public information with respect to the Company or any of its Subsidiaries. Should the Company decide to pursue such transaction with respect to the Offered Securities, the Company shall provide such
Registered Holder with another Offer Notice and such Registered Holder will again have the right of participation set forth in this Section 16. The Company shall not be permitted to deliver more than one such Offer Notice to such Registered
Holder in any sixty (60) day period, except as expressly contemplated by the last sentence of Section 16(ii). 

(ix) The restrictions contained in this Section 16 shall not apply in connection with the issuance of any Excluded
Securities or any issuances (or deemed issuances) pursuant to an ATM Facility. The Company shall not circumvent the provisions of this Section 16 by providing terms or conditions to one Registered Holder that are not provided to all. 

17. CERTAIN DEFINITIONS. For purposes of this Warrant, the following terms shall have the following meanings: 

17.1. “1934 Act” means the U.S. Securities Exchange Act of 1934, as amended. 

  
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 17.2. “Adjustment Right” means any right granted with respect to any securities
issued in connection with, or with respect to, any issuance or sale (or deemed issuance or sale in accordance with Section 2) of shares of Common Stock (other than rights of the type described in Sections 2(b) and 3 hereof) that could result in
a decrease in the net consideration received by the Company in connection with, or with respect to, such securities (including, without limitation, any cash settlement rights, cash adjustment or other similar rights). 

17.3. “Approved Stock Plan” means any employee benefit or incentive plan which has been approved by the Board of Directors
of the Company prior to or subsequent to the date hereof pursuant to which shares of Common Stock, options to purchase Common Stock, stock appreciation rights, restricted shares of Common Stock, restricted stock units and other stock-based awards
may be issued to any employee, officer, director or consultant for services provided to the Company in their capacity as such. 
 17.4.
“Black Scholes Consideration Value” means the value of the applicable Option, Convertible Security or Adjustment Right (as the case may be) as of the date of issuance thereof calculated using the Black Scholes Option Pricing Model
obtained from the “OV” function on Bloomberg utilizing (i) an underlying price per share equal to the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the public announcement of the execution of
definitive documents with respect to the issuance of such Option, Convertible Security or Adjustment Right (as the case may be), (ii) a risk-free interest rate corresponding to the U.S. Treasury rate for a period equal to the remaining term of
such Option, Convertible Security or Adjustment Right (as the case may be) as of the date of issuance of such Option, Convertible Security or Adjustment Right (as the case may be), (iii) a zero cost of borrow and (iv) an expected
volatility equal to the greater of 100% and the 100 day volatility obtained from the HVT function on Bloomberg (determined utilizing a 360 day annualization factor) as of the Trading Day immediately following the date of issuance of such Option,
Convertible Security or Adjustment Right (as the case may be). 
 17.5. “Black Scholes Value” means the value of the
unexercised portion of this Warrant remaining on the date of the Holder’s request, which value is calculated using the Black Scholes Option Pricing Model obtained from the “OV” function on Bloomberg, L.P. utilizing (i) an
underlying price per share equal to the greater of (1) the highest closing sale price of the Common Stock during the period beginning on the Trading Day immediately preceding the earliest to occur of (x) the public disclosure of the
applicable Fundamental Transaction, (y) the consummation of the applicable Fundamental Transaction and (z) the date on which the Holder first became aware of the applicable Fundamental Transaction and ending on the Trading Day of the
Holder’s request and (2) the sum of the price per share being offered in cash in the applicable Fundamental Transaction (if any) plus the value of the non-cash consideration being offered in the applicable Fundamental Transaction (if any),
(ii) a strike price equal to the Exercise Price in effect on the date of the Holder’s request, (iii) a zero cost of borrow, (iv) a risk-free interest rate corresponding to the U.S. Treasury rate for a period equal to the greater
of (1) the remaining term of this Warrant as of the date of the Holder’s request and (2) the remaining term of this Warrant as of the date of consummation of the applicable Fundamental Transaction or as of the date of the
Holder’s request if such request is prior to the date of the consummation of the applicable Fundamental Transaction and (v) an expected volatility equal to the greater of 

  
 20 

 
100% and the 30-day volatility obtained from the HVT function on Bloomberg, L.P. (determined utilizing a 360 day annualization factor) as of the Trading Day immediately following the public
disclosure of the applicable Fundamental Transaction (or, solely to the extent such Fundamental Transaction is not disclosed to the public, the date of the consummation of the such Fundamental Transaction). 

17.6. “Bloomberg” means Bloomberg, L.P. 

17.7. “Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New
York are authorized or required by law to remain closed. 
 17.8. “Close of Business” means 5:00 p.m., New York City time.

 17.9. “Closing Bid Price” and “Closing Sale Price” means, for any security as of any date, the last
closing bid price and last closing trade price, respectively, for such security on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and does not designate the closing bid price
or the closing trade price, as the case may be, then the last bid price or the last trade price, respectively, of such security prior to 4:00 p.m., New York time, as reported by Bloomberg, or, if the Principal Market is not the principal securities
exchange or trading market for such security, the last closing bid price or last trade price, respectively, of such security on the principal securities exchange or trading market where such security is listed or traded as reported by Bloomberg, or
if the foregoing do not apply, the last closing bid price or last trade price, respectively, of such security in the over-the-counter market on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price or
last trade price, respectively, is reported for such security by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for such security as reported in the “pink sheets” by Pink Sheets LLC
(formerly the National Quotation Bureau, Inc.). If the Closing Bid Price or the Closing Sale Price cannot be calculated for a security on a particular date on any of the foregoing bases, the Closing Bid Price or the Closing Sale Price, as the case
may be, of such security on such date shall be the fair market value as determined by the Company in good faith. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction
during the applicable calculation period. 
 17.10. “Common Stock” means (i) shares of the Company’s common
stock, par value $0.01 per share and (ii) any capital stock into which such common stock shall have been changed or any share capital resulting from a reclassification of such common stock. 

17.11. “Common Stock Deemed Outstanding” means, at any given time, the number of shares of Common Stock actually outstanding
at such time, plus the number of shares of Common Stock issuable upon exercise, exchange or conversion of Options and Convertible Securities actually outstanding at such time , but excluding any shares of Common Stock owned or held by or for the
account of the Company or issuable exercise of the Warrants. 

  
 21 

 17.12. “Convertible Securities” means any stock or other security (other than
Options) that is at any time and under any circumstances, directly or indirectly, convertible into, exercisable or exchangeable for, or which otherwise entitles the holder thereof to acquire, any shares of Common Stock. 

17.13. “Eligible Market” means any national securities exchange securities exchange that has registered with the SEC under
Section 6 of the 1934 Act. 
 17.14. “Excluded Securities” means any (i) shares of Common Stock, Options, stock
appreciation rights, restricted shares of Common Stock, restricted stock units and other stock-based awards to directors, officers, employees or consultants of the Company in their capacity as such pursuant to an Approved Stock Plan (as defined
above); (ii) shares of Common Stock issued upon the conversion or exercise of Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) issued prior
to the date hereof; provided that the conversion price of any such Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) is not lowered, none of such
Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) are amended to increase the number of shares issuable thereunder and none of the terms or
conditions of any such Convertible Securities (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) are otherwise materially changed in any manner that adversely affects any
of the Buyers; and (iii) the shares of Common Stock or Options issued to financial institutions or lessors in connection with commercial credit arrangements, equipment financings or similar transactions (excluding any shares of Common Stock
issuable upon conversion or exercise of any Convertible Securities). 
 17.15. “Expiration Date” means the date that is
the fifth (5th) anniversary of the Issuance Date or, if such date falls on a day other than a Business Day or on which trading does not take place on the Principal Market (a
“Holiday”), the next date that is not a Holiday. 
 17.16. “Fundamental Transaction” means that
(i) the Company shall, directly or indirectly, in one or more related transactions, (1) consolidate or merge with or into (whether or not the Company is the surviving corporation but except any merger solely to effect the migration of the
Company to a new jurisdiction of incorporation) any other Person, or (2) sell, lease, license, assign, transfer, convey or otherwise dispose of all or substantially all of its properties or assets to any other Person, (3) consummate a
stock or share purchase agreement or other business combination with any other Person whereby such other Person acquires more than 50% of the outstanding shares of Voting Stock of the Company (not including any shares of Voting Stock of the Company
held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock or share purchase agreement or other business combination), or (4) reorganize, recapitalize or
reclassify the Common Stock (except to effect the migration of the Company to a new jurisdiction of incorporation) or (ii) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the 1934
Act and the rules and the rules and regulations promulgated thereunder) is or shall become the “beneficial owner” (as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power
represented by issued and outstanding Voting Stock of the Company. 

  
 22 

 17.17. “Options” means any rights, warrants or options to subscribe for or
purchase shares of Common Stock or Convertible Securities. 
 17.18. “Parent Entity” of a Person means an entity that,
directly or indirectly, controls the applicable Person and whose common stock or equivalent equity security is quoted or listed on an Eligible Market, or, if there is more than one such Person or Parent Entity, the Person or Parent Entity with the
largest public market capitalization as of the date of consummation of the Fundamental Transaction. 
 17.19. “Person”
means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity or a government or any department or agency thereof. 

17.20. “Principal Market” means the Nasdaq Global Select Market. 

17.21. “Securities Purchase Agreement” means that certain Securities Purchase Agreement, dated as of April 4, 2012, by
and among the Company and the investors (the “Buyers”) referred to therein. 
 17.22. “Successor Entity”
means the Person (or, if so elected by the Holder, the Parent Entity) formed by, resulting from or surviving any Fundamental Transaction or the Person (or, if so elected by the Holder, the Parent Entity) with which such Fundamental Transaction shall
have been entered into. 
 17.23. “Trading Day” means any day on which the Common Stock is traded on the Principal Market,
or, if the Principal Market is not the principal trading market for the Common Stock, then on the principal securities exchange or securities market on which the Common Stock is then traded, provided that “Trading Day” shall not include
any day on which the Common Stock is scheduled to trade on such exchange or market for less than 4.5 hours or any day that the Common Stock is suspended from trading during the final hour of trading on such exchange or market (or if such exchange or
market does not designate in advance the closing time of trading on such exchange or market, then during the hour ending at 4:00 p.m., New York time). 

17.24. “Variable Rate Transaction” means a transaction in which the Company or any Subsidiary (i) issues or sells any
Common Stock, Convertible Securities and/or Options either (A) at a conversion, exercise or exchange rate or other price that is based upon and/or varies with the trading prices of or quotations for the shares of Common Stock at any time after
the initial issuance of such Common Stock, Convertible Securities and/or Options, or (B) with a conversion, exercise or exchange price that is subject to being reset at some future date after the initial issuance of such Common Stock,
Convertible Securities and/or Options or upon the occurrence of specified or contingent events directly or indirectly related to the business of the Company or the market for the Common Stock, other than pursuant to a customary “weighted
average” anti-dilution provision or (ii) enters into any agreement (including, without 

  
 23 

 
limitation, an equity line of credit or an “at-the-market” offering) whereby the Company or any Subsidiary may sell securities at a future determined price (other than standard and
customary “preemptive” or “participation” rights). 
 17.25. “Voting Stock” of a Person means capital
stock of such Person of the class or classes pursuant to which the holders thereof have the general voting power to elect, or the general power to appoint, at least a majority of the board of directors, managers or trustees of such Person
(irrespective of whether or not at the time capital stock of any other class or classes shall have or might have voting power by reason of the happening of any contingency). 

[signature page follows] 

  
 24 

 IN WITNESS WHEREOF, the Company has caused this Warrant to Purchase Common Stock to be
duly executed as of the Issuance Date set out above. 
  

			
	AMERICAN SUPERCONDUCTOR CORPORATION
		
	By:	 	  

	Name:	 	
	Title:	 	

 EXHIBIT A 

EXERCISE NOTICE 
 TO BE
EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS 
 WARRANT TO PURCHASE COMMON STOCK 

AMERICAN SUPERCONDUCTOR CORPORATION 

The undersigned holder hereby exercises the right to purchase
                     of the shares of Common Stock (“Warrant Shares”) of AMERICAN SUPERCONDUCTOR CORPORATION, a Delaware
corporation (the “Company”), evidenced by the attached Warrant to Purchase Common Stock (the “Warrant”). Capitalized terms used herein and not otherwise defined shall have the respective meanings set forth in the
Warrant. 
 1. Form of Exercise Price. The Holder intends that payment of the Exercise Price shall be made as: 

                     a “Cash
Exercise” with respect to                      Warrant Shares; and/or 

                     a “Cashless
Exercise” with respect to                      Warrant Shares. 

2. Payment of Exercise Price. In the event that the holder has elected a Cash Exercise with respect to some or all of the Warrant Shares to be
issued pursuant hereto, the holder shall pay the Aggregate Exercise Price in the sum of $         to the Company in accordance with the terms of the Warrant. 

3. Delivery of Warrant Shares. The Company shall deliver to the holder          Warrant Shares in
accordance with the terms of the Warrant. 
  

					
	Date:                  ,         
	
	  

	Name of Registered Holder
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

 ACKNOWLEDGMENT 

The Company hereby acknowledges this Exercise Notice and hereby directs American Stock Transfer & Trust Company, LLC to issue the
above indicated number of shares of Common Stock in accordance with the Transfer Agent Instructions dated November 13, 2014 from the Company and acknowledged and agreed to by American Stock Transfer & Trust Company, LLC. 

 

			
	AMERICAN SUPERCONDUCTOR CORPORATION
		
	By:	 	  

		 	Name:
		 	Title:

 EXHIBIT B 

ASSIGNMENT FORM 

AMERICAN SUPERCONDUCTOR CORPORATION 

(To assign the foregoing Warrant, execute this form and supply required information. Do not use this form to purchase shares.) 

FOR VALUE RECEIVED, the foregoing Warrant and all rights evidenced thereby are hereby assigned to 

 

							
	Name:	 		 		 	  

		 		 		 	(Please Print)
				
	Address:	 		 		 	  

		 		 		 	(Please Print)

  

			
	Dated:                  ,         
		
	Holder’s Signature:	 	  

		
	Holder’s Address:	 	  

 NOTE: The signature to this Assignment Form must correspond with the name as it appears on the face of the Warrant, without
alteration or enlargement or any change whatever. Officers of corporations and those acting in a fiduciary or other representative capacity should file proper evidence of authority to assign the foregoing Warrant.

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