Document:

Amended & Restated Stock Purchase Agreement

 Exhibit 10.47 
 AMENDED AND RESTATED 
 PREFERRED STOCK PURCHASE AGREEMENT

 This Amended and Restated Preferred Stock Purchase Agreement (“Agreement”) is entered into and
effective November 29, 2010 (“Effective Date”), by and between Entech Solar, Inc., a Delaware corporation (“Company”), and Socius CG II, Ltd., a Bermuda exempted company (including its designees, successors and
assigns, “Investor”). 
 RECITALS 

A. The parties previously executed a Preferred Stock Purchase Agreement that was entered into and effective as of February 19, 2010
(the “Original Effective Date”) and was amended and restated effective as of June 22, 2010 (the “Previous Agreement”). The Previous Agreement is hereby amended and restated in its entirety by this Agreement.

 B. The parties desire that, upon the terms and subject to the conditions contained herein, the Company shall issue to
Investor, and Investor shall purchase from the Company, from time to time as provided herein, up to $5,000,000.00 of shares of Series G Preferred Stock; 
 C. The Company previously paid to Investor the Commitment Fee in Commitment Fee Shares as required under the terms of the Previous Agreement as then in effect; and 

D. The offer and sale of certain of the Securities provided for herein are being made without registration under the Act, in reliance
upon the provisions of Section 4(2) of the Act, Regulation D promulgated under the Act, and such other exemptions from the registration requirements of the Act as may be available with respect to any or all of the purchases of such Securities
to be made hereunder. 
 AGREEMENT 
 In consideration of the premises, the mutual provisions of this Agreement, and other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, Company and Investor agree
as follows: 
 ARTICLE 1 
 DEFINITIONS 
 In addition to the terms defined elsewhere in this Agreement:
(a) capitalized terms that are not otherwise defined herein have the meanings given to such terms in the Certificate of Designations, and (b) the following terms have the meanings indicated in this ARTICLE 1: 

“Act” means the Securities Act of 1933, as amended. 

  
 1 

 “Affiliate” means any Person that, directly or indirectly through one or
more intermediaries, controls, is controlled by, or is under common control with a Person, as such terms are used in and construed under Rule 144 under the Act. With respect to Investor, without limitation, any Person owning, owned by, or under
common ownership with Investor, and any investment fund or managed account that is managed on a discretionary basis by the same investment manager as Investor will be deemed to be an Affiliate. 

“Agreement” means this Amended and Restated Preferred Stock Purchase Agreement, including the exhibits, appendices, and
schedules hereto. 
 “Blackout Period” has the meaning set forth in Section 5.14(h). 

“Bloomberg” means Bloomberg Financial Markets. 
 “Certificate of Designations” means the certificate to be filed with the Secretary of State of the State of Delaware, in the form attached hereto as Exhibit B. 

“Change in Control” has the meaning set forth within the definition of Fundamental Transaction, below. 

“Closing” means any one of (i) the Commitment Closing and (ii) each Tranche Closing. 

“Closing Bid Price” means, for any security as of any date, the last closing bid price for such security on the Trading
Market, as reported by Bloomberg, or, if the Trading Market begins to operate on an extended hours basis and does not designate the closing bid price, then the last bid price of such security prior to 4:00 p.m., Eastern time, as reported by
Bloomberg, or, if the Trading Market is not the principal securities exchange or trading market for such security, the last closing bid price 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 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 is
reported for such security by Bloomberg, the average of the bid prices 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
cannot be calculated for a security on a particular date on any of the foregoing bases, the Closing Bid Price of such security on such date shall be the fair market value as mutually determined by the Company and Investor. If the Company and
Investor are unable to agree upon the fair market value of such security, then such dispute shall be resolved pursuant to Section 6.7. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock
combination or other similar transaction during the applicable calculation period. 
 “Commitment Closing” has
the meaning set forth in Section 2.2(a). 
 “Commitment Fee” means a non-refundable fee of
$250,000.00 (5.0% of the Maximum Placement), previously paid by the Company to Investor in consideration of Investor’s commitment to fund the investment contemplated by this Agreement. The Commitment Fee was earned in full on the Original
Effective Date. 

  
 2 

 “Commitment Fee Shares” means the 3,157,727 shares of Common Stock
previously paid to Investor in payment of the Commitment Fee with such shares of Common Stock equal in value to $250,000.00 at August 19, 2010, as calculated in accordance with the Commitment Share VWAP Price (as defined in the Previous
Agreement). 
 “Common Shares” includes the Warrant Shares and any Commitment Fee Shares. 

“Common Stock” means the common stock, par value $0.001 per share, of the Company, and any replacement or substitute
thereof, or any share capital into which such Common Stock shall have been changed or any share capital resulting from a reclassification of such Common Stock. 
 “Company Termination” has the meaning set forth in Section 3.2. 
 “Delisting Event” means any time during the term of this Agreement, that the Common Stock is not listed for and actively and/or regularly trading on a Trading Market, or is suspended or
delisted with respect to the trading of the shares of Common Stock on a Trading Market. 
 “Disclosure
Schedules” means the disclosure schedules of the Company delivered concurrently herewith, attached hereto, and incorporated herein by reference and includes any updates or amendments thereto made upon any Closing. The Disclosure Schedules
shall contain no material non-public information. 
 “DTC” means The Depository Trust Company, or any successor
performing substantially the same function for Company. 
 “DWAC Shares” means, except as expressly stated
otherwise herein, all Common Shares or other shares of Common Stock issued or issuable to Investor or any Affiliate, successor or assign of Investor pursuant to any of the Transaction Documents, including without limitation any Warrant Shares, all
of which shall be (a) issued in electronic form, (b) freely tradable and without restriction on resale, and (c) timely credited by Company to the specified Deposit/Withdrawal at Custodian (DWAC) account with DTC under its Fast
Automated Securities Transfer (FAST) Program or any similar program hereafter adopted by DTC performing substantially the same function, in accordance with irrevocable instructions issued to and countersigned by the Transfer Agent, in the form
attached hereto as Exhibit C or in such other form agreed upon by the parties. 
 “Exchange Act” means
the Securities Exchange Act of 1934, as amended. 
 “Fundamental Transaction” means and shall be deemed to have
occurred at such time upon any of the following events: 
 (i) a consolidation, merger or other business combination or event or
transaction, following which the holders of Common Stock immediately preceding such consolidation, merger, combination or event either (a) no longer hold a majority of the shares of Common Stock or (b) no longer have the ability to elect a
majority of the board of directors of the Company (a “Change in Control”), provided, however, that a Change in Control shall not include or be deemed to have occurred upon the pledge or gift of any shares
of the Company’s capital stock in which no consideration is exchanged for such shares; 

  
 3 

 (ii) the sale or transfer of all or substantially all of the Company’s assets, other
than in the ordinary course of business; or 
 (iii) a purchase, tender or exchange offer made to the holders of the outstanding
shares of Common Stock that is accepted by more than 50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the Person or Persons making or party to, or associated or affiliated with the Persons making or
party to such purchase, tender or exchange offer or held by Investor or an Affiliate of Investor). 
 “GAAP”
means United States generally accepted accounting principles applied on a consistent basis during the periods involved. 

“Indebtedness” means (a) any liabilities for borrowed money or amounts owed in excess of $250,000 (other than trade
accounts payable incurred in the ordinary course of business), (b) all guaranties, endorsements and other contingent obligations in respect of Indebtedness of others, whether or not the same are or should be reflected in the Company’s
balance sheet (or the notes thereto), except guaranties by endorsement of negotiable instruments for deposit or collection or similar transactions in the ordinary course of business; and (c) the present value of any lease payments in excess of
$250,000 due under leases required to be capitalized in accordance with GAAP. 
 “Investor Ownership Limit” has the
meaning set forth in Section 2.3(c). 
 “Liens” means a lien, charge, security interest,
encumbrance, right of first refusal, preemptive right or other restriction. 
 “Lock-Up Agreements” means an
agreement in the form attached as Exhibit D, executed by each of the Company’s officers, directors and beneficial owners of 10% or more of the Common Stock, precluding each such Person from participating in any sale of the Common Stock
from the Tranche Notice Date through the Tranche Closing Date. 
 “Material Adverse Effect” means any material
adverse effect on (i) the legality, validity or enforceability of any Transaction Document, (ii) the results of operations, assets, business, prospects or financial condition of the Company and the Subsidiaries, taken as a whole, or
(iii) the Company’s ability to perform in any material respect on a timely basis its obligations under any Transaction Document. 
 “Material Agreement” means (i) any material loan agreement, financing agreement, equity investment agreement or securities instrument to which Company is a party, (ii) any
agreement or instrument to which Company and Investor or any Affiliate of Investor is a party, and (iii) if a default by the Company thereunder would have a Material Adverse Effect, any other material agreement listed, or required to be listed,
on any of Company’s reports filed or required to be filed with the SEC, including without limitation Forms 10-K, 10-Q or 8-K. 
 “Maximum Placement” means $5,000,000.00. 

  
 4 

 “Maximum Tranche Amount” means, subject to any other applicable limitations
set forth in this Agreement, the Maximum Placement less the amount of any previously noticed and funded Tranches. 

“Officer’s Closing Certificate” means a certificate in customary form reasonably acceptable to Investor, executed
by an authorized officer of the Company. 
 “Opinion” means an opinion from Company’s outside legal
counsel, in the form attached as Exhibit E or in such other form agreed upon by the parties, to be delivered in connection with the Commitment Closing and any Tranche Closing. 

“Person” means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint
venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. 
 “Preferred Shares” means shares of Series G Preferred Stock of the Company provided for in the Certificate of Designations, to be issued to Investor pursuant to this Agreement.

 “Prospectus” includes each prospectus and prospectus supplement (within the meaning of the Act) related to
the sale or offering of any Common Shares, including without limitation any prospectus or prospectus supplement contained within the Registration Statement. 
 “Registration Statement” means a valid, current and effective registration statement registering for resale the shares of Common Stock to be issued as Warrant Shares and Commitment Fee
Shares hereunder, subject to limitations on the total number of shares to be registered as set forth in Section 5.14 hereof, and except where the context otherwise requires, means such registration statement, as amended, including
(i) all documents filed as a part thereof or incorporated by reference therein, and (ii) any information contained or incorporated by reference in a prospectus filed with the SEC in connection with such registration statement, to the
extent such information is deemed under the Act to be part of such registration statement. 
 “Regulation D”
means Regulation D promulgated under the Act. 
 “Required Approval” means any approval of the Trading Market
or the Company’s stockholders required to be obtained by Company prior to issuing the Securities pursuant to any applicable rules of the Trading Market. 
 “Required Tranche Documents” has the meaning set forth in Section 2.3(e). 
 “Rule 144” means Rule 144 promulgated by the SEC pursuant to the Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the SEC having
substantially the same effect. 
 “Rule 144 Eligible” means eligible for immediate resale under Rule 144
without limitation on the amount of securities sold under Rule 144(e) and without requiring discharge by payment in full of any promissory notes given to the Company prior to the sale of the securities under Rule 144(d)(2)(iii). 

  
 5 

 “SEC” means the United States Securities and Exchange Commission.

 “SEC Guidance” means (i) any publicly-available written or oral guidance, comments, requirements or
requests of the SEC staff, (ii) the Act, and (iii) the Exchange Act. 
 “SEC Reports” includes all
reports required to be filed by the Company under the Act and/or the Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years preceding the Effective Date (or such shorter period as the Company was required by law
to file such material) and for the period in which this Agreement is in effect. 
 “Securities” includes the
Warrant, the Common Shares and the Preferred Shares issuable pursuant to this Agreement. 
 “Subsidiary” means
any Person the Company owns or controls, or in which the Company, directly or indirectly, owns a majority of the capital stock or similar interest that would be disclosable pursuant to Regulation S-K, Item 601(b)(21). 

“Termination” has the meaning set forth in Section 3.1. 

“Termination Date” means the earlier of (i) the date that is the two-year anniversary of the Effective Date, or
(ii) the Tranche Closing Date on which the sum of the aggregate Tranche Purchase Price for all Tranche Shares equals the Maximum Placement. 
 “Termination Notice” has the meaning as set forth in Section 3.2. 
 “Trading Day” means any day on which the Common Stock is traded on the Trading Market; provided that it shall not include any day on which the Common Stock is (a) scheduled to trade
for less than 5 hours, or (b) suspended from trading. 
 “Trading Market” means the OTC Bulletin Board,
the NASDAQ Capital Market, the NASDAQ Global Market, the NASDAQ Global Select Market, the NYSE Amex, or the New York Stock Exchange, whichever is at the time the principal trading system, exchange or market for the Common Stock, but does not include
the Pink Sheets inter-dealer electronic quotation and trading system. 
 “Tranche” has the meaning set forth in
Section 2.3(a). 
 “Tranche Amount” means the amount of any individual purchase of Preferred Shares
under this Agreement, as specified by the Company, and shall not exceed the Maximum Tranche Amount. 
 “Tranche
Closing” has the meaning set forth in Section 2.3(f)(iv). 
 “Tranche Closing Date” has
the meaning set forth in Section 2.3(f)(i). 
 “Tranche Notice” has the meaning set forth in
Section 2.3(b). 
 “Tranche Notice Date” has the meaning set forth in Section 2.3(b).

  
 6 

 “Tranche Purchase Price” has the meaning set forth in
Section 2.3(b), and shall be specified in writing by the Company. 
 “Tranche Share Price” means
$10,000.00 per Preferred Share. The Company may not issue fractional Preferred Shares. 
 “Tranche Shares”
means the Preferred Shares that are purchased by Investor pursuant to a Tranche. For the Maximum Placement, the Company shall issue 500 Preferred Shares to Investor. 
 “Transaction Documents” means (i) this Agreement, (ii) the other agreements and documents referenced herein to which the Company and/or Investor or any of their respective
Affiliates is a party, and (iii) the exhibits and schedules hereto and thereto. 
 “Transfer Agent” means
Computershare or any successor transfer agent for the Common Stock. 
 “Use of Proceeds Certificate” means a
certificate, in substantially the form attached as Exhibit F, signed by an officer of the Company, setting forth how the Tranche Purchase Price will be applied by the Company. 

“VWAP” means, for any date, the volume-weighted average price, calculated by dividing the aggregate value of Common
Stock traded on the Trading Market (price multiplied by number of shares traded) by the total volume (number of shares) of Common Stock traded on the Trading Market for such date, or the nearest preceding Trading Day. 

“Warrant Shares” means the shares of Common Stock issuable upon exercise of the Warrant. 

“Warrant” means the amended and restated warrant issuable under this Agreement, in the form attached hereto as
Exhibit A, which warrant shall fully amend and restate the warrant issued in connection with the Previous Agreement (the “Original Warrant”), obligating the holder thereof to purchase shares of Common Stock with an aggregate
exercise price equal to 135.0% of the Maximum Placement (subject to adjustment as set forth therein). 
 ARTICLE 2

 PURCHASE AND SALE 
 2.1 Agreement to Purchase. Subject to the terms and conditions herein and the satisfaction of the conditions to closing set forth in this ARTICLE 2: 

(a) Investor hereby agrees to purchase such amounts of Preferred Shares as the Company may, in its sole and absolute discretion,
from time to time elect to issue and sell to Investor according to one or more Tranches pursuant to Section 2.3 below; and 
 (b) The Company agrees to issue the Preferred Shares, the Common Shares, and the Warrant to Investor as provided herein. 

  
 7 

 2.2 Investment Commitment 

(a) Investment Commitment. The closing of this Agreement (the “Commitment Closing”) shall be deemed to
occur when this Agreement has been duly executed by both Investor and the Company, and the other Conditions to the Commitment Closing set forth in Section 2.2(b) have been met. 

(b) Conditions to Investment Commitment. As a condition precedent to the Commitment Closing, all of the following (the
“Conditions to Commitment Closing”) shall have been satisfied prior to or concurrently with the Company’s execution and delivery of this Agreement: 
 (i) the following documents shall have been delivered to Investor: (A) this Agreement, executed by the Company, including the Disclosure Schedules; (B) a Secretary’s Certificate as
to (x) the resolutions of the Company’s board of directors authorizing this Agreement and the Transaction Documents, and the transactions contemplated hereby and thereby, and (y) a copy of the Company’s current Certificate of
Incorporation, Bylaws, and other governing documents; (C) the Certificate of Designations executed by the Company and filed with the Delaware Secretary of State; (D) the Opinion; and (E) a copy of the Company’s press release (if
any) announcing the transactions contemplated by this Agreement; 
 (ii) other than for losses incurred in the ordinary
course of business, there has not been any Material Adverse Effect on the Company since the date of the last SEC Report filed by the Company, except as set forth in Section 4.1(aa) hereof; 

(iii) the representations and warranties of the Company in this Agreement shall be true and correct in all material respects and
the Company shall have delivered an Officer’s Closing Certificate to such effect to Investor, signed by an officer of the Company; 
 (iv) the Warrant to purchase shares of Common Stock with an aggregate exercise price equal to 135.0% of the Maximum Placement (subject to adjustment as set forth therein) shall have been delivered
to Investor; 
 (v) the Company shall have issued, and delivered to its legal counsel to be held in trust, the stock
certificate for the Commitment Fee Shares as described in the definition of “Commitment Fee Shares” in ARTICLE 1 hereof; and 
 (vi) any Required Approval has been obtained. 
 (c)
Investor’s Obligation to Purchase. Subject to the prior satisfaction of all conditions set forth in this Agreement, following Investor’s receipt of a validly delivered Tranche Notice, Investor shall be required to purchase from the
Company a number of Tranche Shares equal to the permitted Tranche Share Amount and a number of Warrant Shares equal to 135% of the permitted Tranche Share Amount, in the manner described below. 

  
 8 

 2.3 Tranches to Investor 

(a) Procedure to Elect a Tranche. Subject to the Maximum Tranche Amount, the Maximum Placement and the other conditions and
limitations set forth in this Agreement, at any time beginning on the effective date of the Registration Statement, the Company may, in its sole and absolute discretion, elect to exercise one or more individual investments of Preferred Shares under
this Agreement (each a “Tranche”) according to the following procedure. 
 (b) Delivery of Tranche
Notice. The Company shall deliver an irrevocable written notice (the “Tranche Notice”), in the form attached hereto as Exhibit G, to Investor stating that the Company shall exercise a Tranche and stating the number of
Preferred Shares which the Company will sell to Investor at the Tranche Share Price, and the aggregate purchase price for such Tranche (the “Tranche Purchase Price”). A Tranche Notice delivered by the Company to Investor by 4:30
p.m. Eastern time on any Trading Day shall be deemed delivered on the same day. A Tranche Notice delivered by the Company to Investor after 4:30 p.m. Eastern time on any Trading Day, or at any time on a non-Trading Day, shall be deemed delivered on
the next Trading Day. The date that the Tranche Notice is deemed delivered is the “Tranche Notice Date”. Each Tranche Notice shall be delivered via facsimile or electronic mail, with confirming copy by overnight carrier, in each
case to the address set forth in Section 6.2. Except for the first Tranche Closing, the Company may not give a Tranche Notice unless the Tranche Closing for the prior Tranche has occurred or has been cancelled by the Company pursuant to
Section 2.3(g). 
 (c) Warrant. On each Tranche Notice Date, that portion of the Warrant equal to 135%
of the Tranche Amount shall vest and be automatically exercised at the exercise price set forth therein. In no event may the Company deliver a Tranche Notice if (i) the number of registered shares underlying the Warrant is insufficient to cover
the portion of the Warrant that shall vest and become automatically exercisable in connection with such Tranche Notice, or (ii) the number of Warrant Shares to be received pursuant to automatic exercise of the Warrant, aggregated with all other
shares of Common Stock and other voting securities then owned or deemed beneficially owned by Investor and its Affiliates, would result in Investor and its Affiliates owning or being deemed the beneficial owner of more than 9.99% of all of such
Common Stock and other voting securities as would be outstanding on the date of exercise, with such ownership percentage determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder (the
“Investor Ownership Limit”). 
 (d) Conditions Precedent to Right to Deliver a Tranche Notice.
The right of the Company to deliver a Tranche Notice is subject to the satisfaction, on the date of delivery of such Tranche Notice, of each of the following conditions: 
 (i) the Common Stock (including without limitation any shares of Common Stock that may be issued to Investor in payment of the Commitment Fee) shall be listed for and currently trading on the
Trading Market, and to the Company’s knowledge there is no notice of any suspension or delisting with respect the trading of the shares of Common Stock on such Trading Market; 

  
 9 

 (ii) the representations and warranties of the Company set forth in this Agreement
shall be true and correct in all material respects as if made on such date (except for any representations and warranties that are expressly made as of a particular date, in which case such representations and warranties shall be true and correct as
of such particular date), and the Company shall deliver an Officer’s Closing Certificate to such effect to Investor, dated as of the Closing and signed by an officer of the Company; 

(iii) other than losses incurred in the ordinary course of business, there has been no Material Adverse Effect on the Company
since the Commitment Closing except as set forth in Section 4.1(aa) hereof; 
 (iv) the Company is not, and
will not be as a result of the applicable Tranche, in default of this Agreement, any other agreement with Investor or any Affiliate of Investor, or any other Material Agreement; 

(v) there is not then in effect any law, rule or regulation prohibiting or restricting the transactions contemplated in this
Agreement or any other Transaction Document, or requiring any consent or approval which shall not have been obtained, nor is there any pending or threatened proceeding or investigation which may have the effect of prohibiting or adversely affecting
any of the transactions contemplated by this Agreement; no statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or adopted by any court or governmental authority of competent
jurisdiction that prohibits the transactions contemplated by this Agreement, and no actions, suits or proceedings shall be in progress, pending or, to the Company’s knowledge threatened, by any person (other than Investor or any Affiliate of
Investor), that seek to enjoin or prohibit the transactions contemplated by this Agreement; 
 (vi) all Common Shares
shall have been timely delivered at the times provided for in this Agreement, including all Warrant Shares issuable pursuant to any Exercise Notice delivered to Company prior to the Tranche Notice Date; 

(vii) all previously-issued and issuable Warrant Shares and (except with respect to the first Tranche Closing) all previously
issued and issuable Commitment Fee Shares are DWAC Shares, are DTC eligible, and can be immediately converted into electronic form without restriction on resale; 
 (viii) Company is in compliance with all requirements to maintain its then-current listing on the Trading Market; 
 (ix) the Company has a current, valid and effective Registration Statement permitting the lawful resale of all Warrant Shares issuable upon exercise of the Warrant delivered in connection with such
Tranche or any previous Tranche; 
 (x) Company has a sufficient number of duly authorized shares of Common Stock
reserved for issuance in such amount as may be required to fulfill its obligations pursuant to the Transaction Documents and any outstanding agreements with Investor and any Affiliate of Investor, including without limitation all Warrant Shares
issuable upon exercise of the Warrant issued in connection with such Tranche; 

  
 10 

 (xi) Company has provided notice of its delivery of the Tranche Notice to all
signatories of a Lock-Up Agreement as required under the Lock-Up Agreements; 
 (xii) the aggregate number of Warrant
Shares issuable upon exercise of the Warrant on the Tranche Notice Date, when aggregated with all other shares of Common Stock deemed beneficially owned by Investor and its Affiliates acquired in connection with the transactions contemplated by the
Transaction Documents, would not result in Investor and/or its Affiliates exceeding the Investor Ownership Limit; and 

(xiii) for any Tranche Notice delivered after the earliest of (A) the first Tranche Closing, (B) the six-month
anniversary of the Original Effective Date, or (C) the date the Registration Statement is declared effective by the SEC, Investor shall have previously received the Commitment Fee. 

(e) Documents to be Delivered at Tranche Closing. The Closing of any Tranche and Investor’s obligations hereunder
shall additionally be conditioned upon the delivery to Investor of each of the following (the “Required Tranche Documents”) on or before the applicable Tranche Closing Date: 

(i) a number of Preferred Shares equal to the Tranche Purchase Price divided by the Tranche Share Price shall have been delivered
to Investor or an account specified by Investor for the Tranche Shares; 
 (ii) the following executed documents:
Opinion, Officer’s Certificate and Lock-Up Agreements; 
 (iii) a Use of Proceeds Certificate, signed by an officer
of the Company, and setting forth how the Tranche Purchase Price will be applied by the Company; 
 (iv) all Warrant
Shares shall have been timely delivered in accordance with any automatic exercise of the Warrant prior to the Tranche Closing Date; 
 (v) all documents, instruments and other writings required to be delivered by the Company to Investor on or before the Tranche Closing Date pursuant to any provision of this Agreement or in order
to implement and effect the transactions contemplated herein; and 
 (vi) payment of a $5,000.00 non-refundable
administrative fee to Investor’s counsel, by offset against the Tranche Amount, or by wire transfer of immediately available funds. 
 (f) Mechanics of Tranche Closing. 
 (i) Each of the Company
and Investor shall deliver all documents, instruments and writings required to be delivered by either of them pursuant to Section 2.3(e) of this Agreement at or prior to each Tranche Closing. Subject to such delivery and the satisfaction
of the conditions set forth in Section 2.3(d) as of the Tranche Closing Date, the closing of the purchase by Investor of Preferred Shares shall occur by 5:00 p.m. Eastern time, on the date which is ten (10) Trading Days following
(and not counting) the Tranche Notice Date (each a “Tranche Closing Date”) at the offices of Investor. 

  
 11 

 (ii) With respect to that portion of the Warrant that is automatically exercised on
the Tranche Notice Date (which exercise shall be documented by Investor sending the Exercise Delivery Documents to the Company in accordance with Section 1.1 of the Warrant), the Company shall send Investor an electronic copy of its
share issuance instructions to the Transfer Agent and shall cause the requisite number of Warrant Shares in accordance with the provisions of Section 2.3(d)(vii) above to be credited to Investor’s account with DTC as DWAC Shares by
12:00 p.m. Eastern time on the Trading Day after such Tranche Notice Date. If DWAC shares are not timely credited pursuant to this Section 2.3(f)(ii), then the Tranche Closing Date shall be extended by one Trading Day for each Trading
Day that such timely credit of DWAC Shares is not made. 
 (iii) On or before each Tranche Closing Date, Investor shall
deliver to the Company, in cash or immediately available funds, the Tranche Purchase Price to be paid for such Tranche Shares. 

(iv) The closing (each a “Tranche Closing”) for each Tranche shall occur on the date that both (i) the
Company has delivered to Investor all Required Tranche Documents, and (ii) Investor has delivered to the Company the Tranche Purchase Price. 
 (g) Limitation on Obligations to Purchase and Sell. Notwithstanding any other provision, in the event the Closing Bid Price of the Common Stock during any one or more of the 9 Trading Days
following the Tranche Notice Date is below 75.0% of the Closing Bid Price on the Tranche Notice Date, Company shall not issue any of Tranche Shares on the applicable Tranche Closing Date, Investor shall not purchase any of the Tranche shares, and
the Tranche shall be cancelled and shall not close. 
 2.4 Share Sufficiency. On or before the date on
which any portion of the Warrant become exercisable, the Company shall have a sufficient number of duly authorized shares of Common Stock for issuance in such amount as may be required to fulfill its obligations pursuant to the Transaction Documents
and any outstanding agreements with Investor and any Affiliate of Investor. 
 2.5 Maximum Placement.
Investor shall not be obligated to purchase any additional Tranche Shares once the aggregate Tranche Purchase Price paid by Investor equals the Maximum Placement. 
 ARTICLE 3 
 TERMINATION 

3.1 Termination. The Investor may elect to terminate this Agreement and the Company’s right to initiate
subsequent Tranches to Investor under this Agreement (each, a “Termination”) upon the occurrence of any of the following: 
 (a) if, at any time, either the Company or any director or executive officer of the Company has engaged in a transaction or conduct related to the Company that has resulted in

  
 12 

 
(i) a SEC enforcement action, including without limitation such director or executive officer being sanctioned by the SEC, or (ii) a civil judgment or criminal conviction for fraud or
misrepresentation, or for any other offense that, if prosecuted criminally, would constitute a felony under applicable law; 

(b) on any date after a Delisting Event that lasts for an aggregate of 20 Trading Days during any calendar year; 

(c) if at any time the Company has filed for and/or is subject to any bankruptcy, insolvency, reorganization or liquidation
proceedings or other proceedings for relief under any bankruptcy law or any law for the relief of debtors instituted by or against the Company or any Subsidiary of the Company; 

(d) the Company is in breach or default of any Material Agreement, which breach or default could have a Material Adverse Effect;

 (e) the Company is in breach or default of this Agreement, any Transaction Document, or any agreement with Investor or
any Affiliate of Investor; 
 (f) upon the occurrence of a Fundamental Transaction; 

(g) so long as any Preferred Shares are outstanding, the Company effects or publicly announces its intention to create a security
senior to the Series G Preferred Stock, or substantially alters the capital structure of the Company in a manner that materially adversely effects the rights or preferences of the Series G Preferred Stock, provided,
however, that the creation of a new series of preferred stock senior to the Series G Preferred Stock shall not be deemed a Termination event if (i) such new series of preferred stock is created solely for the substitution,
replacement or exchange of the Company’s existing Series D Preferred Stock, (ii) such new series of preferred stock contains rights and preferences no more favorable than the Series D Preferred Stock, and (iii) following any such
substitution, replacement or exchange, all of the Company’s authorized Series D Preferred Stock is cancelled; and 

(h) on the Termination Date. 
 3.2 Company Termination. The Company may at any time in its sole discretion terminate (a “Company Termination”) this Agreement and its right to initiate future
Tranches by providing thirty (30) days advance written notice (“Termination Notice”) to Investor. 

3.3 Effect of Termination. Except as otherwise provided herein, the termination of this Agreement will have no
effect on any Common Shares, Preferred Shares, Commitment Fee Shares, Warrant, Warrant Shares, or DWAC Shares previously issued, delivered or credited, or on any then-existing rights of any holder thereof. Notwithstanding any other provision of this
Agreement and regardless of whether the first Tranche has closed, the Commitment Fee is payable despite any termination of this Agreement and all fees paid to Investor or its counsel are non-refundable. 

  
 13 

 ARTICLE 4 
 REPRESENTATIONS AND WARRANTIES 
 4.1 Representations and
Warranties of the Company. Except as set forth under the corresponding section of the Disclosure Schedules, which shall be deemed a part hereof and which shall not contain any material non-public information, the Company hereby represents
and warrants to, and as applicable covenants with, Investor as of the Effective Date and as of each Closing: 
 (a)
Subsidiaries. All of the direct and indirect subsidiaries of the Company are set forth on Section 4.1(a) to the Disclosure Schedule. The Company owns, directly or indirectly, all of the capital stock or other equity interests of
each Subsidiary, and all of such directly or indirectly owned capital stock or other equity interests are owned free and clear of any Liens. All the issued and outstanding shares of capital stock of each Subsidiary are duly authorized, validly
issued, fully paid, non-assessable and free of preemptive and similar rights to subscribe for or purchase securities. 

(b) Organization and Qualification. Each of the Company and each Subsidiary is an entity duly incorporated or otherwise
organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization, as applicable, with the requisite power and authority to own and use its properties and assets and to carry on its business as
currently conducted. Neither the Company nor any Subsidiary is in violation or default of any of the provisions of its respective certificate or articles of incorporation, bylaws or other organizational or charter documents. Each of the Company and
each Subsidiary is duly qualified to conduct business and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted or property owned by it makes such qualification necessary,
except where the failure to be so qualified or in good standing, as the case may be, could not have or reasonably be expected to result in a Material Adverse Effect and no proceeding has been instituted in any such jurisdiction revoking, limiting or
curtailing or seeking to revoke, limit or curtail such power and authority or qualification. 
 (c) Authorization;
Enforcement. The Company has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by each of the Transaction Documents and otherwise to carry out its obligations hereunder or thereunder. The
execution and delivery of each of the Transaction Documents by the Company and the consummation by it of the transactions contemplated hereby or thereby have been duly authorized by all necessary action on the part of the Company and no further
consent or action is required by the Company other than the filing of the Certificate of Designations. Each of the Transaction Documents has been, or upon delivery will be, duly executed by the Company and, when delivered in accordance with the
terms hereof, will constitute the valid and binding obligation of the Company, enforceable against the Company in accordance with its terms, except (i) as limited by general equitable principles and applicable bankruptcy, insolvency,
reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable
remedies and (iii) insofar as indemnification and contribution provisions may be limited by applicable law. Neither the Company nor any Subsidiary is in violation of any of the provisions of its respective certificate or articles of
incorporation, by-laws or other organizational or charter documents. 

  
 14 

 (d) No Conflicts. The execution, delivery and performance of the Transaction
Documents by the Company, the issuance and sale of the Securities and the consummation by the Company of the other transactions contemplated thereby do not and will not (i) conflict with or violate any provision of the Company’s or any
Subsidiary’s certificate or articles of incorporation, articles of association, bylaws, or other organizational or charter documents, or (ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both
would become a default) under, result in the creation of any Lien upon any of the properties or assets of the Company or any Subsidiary, or give to others any rights of termination, amendment, acceleration or cancellation (with or without notice,
lapse of time or both) of, any agreement, credit facility, debt or other instrument (evidencing a Company or Subsidiary debt or otherwise) or other understanding to which the Company or any Subsidiary is a party or by which any property or asset of
the Company or any Subsidiary is bound or affected, or (iii) conflict with or result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which the
Company or a Subsidiary is subject (including federal and state securities laws and regulations), or by which any property or asset of the Company or a Subsidiary is bound or affected, or (iv) conflict with or violate the terms of any agreement
by which the Company or any Subsidiary is bound or to which any property or asset of the Company or any Subsidiary is bound or affected; except in the case of each of clauses (ii) and (iii), such as could not have or reasonably be expected to
result in a Material Adverse Effect. 
 (e) Filings, Consents and Approvals. Neither the Company nor any
Subsidiary is required to obtain any consent, waiver, authorization or order of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority or other Person in connection with
the execution, delivery and performance by the Company of the Transaction Documents, other than the filing of the Certificate of Designations and required federal and state securities filings and such filings and approvals as are required to be made
or obtained under the applicable Trading Market rules in connection with the transactions contemplated hereby, each of which has been, or (if not yet required to be filed) shall be, timely filed. 

(f) Issuance of the Securities. The Securities are duly authorized and, when issued and paid for in accordance with the
applicable Transaction Documents, will be duly and validly issued, fully paid and nonassessable, free and clear of all Liens. The Company has reserved from its duly authorized capital stock a number of shares of Common Stock and Preferred Stock for
issuance of the Securities at least equal to the number of Securities which could be issued pursuant to the terms of the Transaction Documents, based on the then-anticipated exercise prices of the Warrant. 

(g) Capitalization. Other than as set forth in Section 4.1(g) to the Disclosure Schedule, the capitalization of
the Company is as described in the Company’s most recently filed periodic SEC Report as further qualified by any SEC Reports filed subsequent to the date thereof. Except with respect to equity participation rights of the holder of the
Company’s Series D Preferred Stock all of which have been waived, no Person has any right of first refusal, 

  
 15 

 
preemptive right, right of participation, or any similar right to participate in the transactions contemplated by the Transaction Documents. Except as a result of the purchase and sale of the
Securities or as set forth in the SEC Reports or on Section 4.1(g) to the Disclosure Schedule, there are no outstanding options, warrants, script rights to subscribe to, calls or commitments of any character whatsoever relating to, or
securities, rights or obligations convertible into or exchangeable for, or giving any Person any right to subscribe for or acquire, any shares of Common Stock, or contracts, commitments, understandings or arrangements by which the Company or any
Subsidiary is or may become bound to issue additional shares of Common Stock or securities convertible into or exercisable for shares of Common Stock. The issuance and sale of the Securities will not obligate the Company to issue shares of Common
Stock or other securities to any Person (other than Investor) and will not result in a right of any holder of Company securities to adjust the exercise, conversion, exchange, or reset price under such securities. All of the outstanding shares of
capital stock of the Company are validly issued, fully paid and nonassessable, have been issued in compliance with all federal and state securities laws, and none of such outstanding shares was issued in violation of any preemptive rights or similar
rights to subscribe for or purchase securities. No further approval or authorization of any stockholder, the Board of Directors of the Company or others is required for the issuance and sale of the Securities. Other than as required by this
Agreement or the Previous Agreement, there are no stockholders agreements, voting agreements or other similar agreements with respect to the Company’s capital stock to which the Company is a party or, to the knowledge of the Company, between or
among any of the Company’s stockholders. 
 (h) SEC Reports; Financial Statements. The Company has filed all
required SEC Reports for the two years preceding the Effective Date (or such shorter period as the Company was required by law to file such SEC Reports) on a timely basis. As of their respective dates, the SEC Reports complied in all material
respects with the requirements of the Act and the Exchange Act and the rules and regulations of the SEC promulgated thereunder, as applicable, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to
state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. The financial statements of the Company included in the SEC Reports
comply in all material respects with applicable accounting requirements and the rules and regulations of the SEC with respect thereto as in effect at the time of filing. Such financial statements have been prepared in accordance with GAAP, except as
may be otherwise specified in such financial statements or the notes thereto and except that unaudited financial statements may not contain all footnotes required by GAAP, and fairly present in all material respects the financial position of the
Company and its consolidated subsidiaries as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case of unaudited statements, to normal, immaterial, year-end audit adjustments.

 (i) Material Changes. Since the date of the latest audited financial statements included within the SEC
Reports, and except as has been disclosed in any SEC Reports subsequent to the date thereof, (i) there has been no event, occurrence or development that has had, or that could reasonably be expected to result in, a Material Adverse Effect,
(ii) the Company has not incurred any liabilities (contingent or otherwise) other than (A) trade payables and accrued expenses incurred in the ordinary course of business consistent with past practice, and (B) liabilities not required
to be reflected in the Company’s financial statements pursuant to 

  
 16 

 
GAAP or required to be disclosed in filings made with the SEC, (iii) the Company has not altered its method of accounting, (iv) the Company has not declared or made any dividend or
distribution of cash or other property to its stockholders or purchased, redeemed or made any agreements to purchase or redeem any shares of its capital stock (other than as contemplated and permitted by the Transaction Documents), and (v) the
Company has not issued any equity securities to any officer, director or Affiliate, except pursuant to existing Company equity incentive plans as disclosed in the SEC Reports. The Company does not have pending before the SEC any request for
confidential treatment of information. 
 (j) Litigation. Except as set forth on Section 4.1(j) to the
Disclosure Schedule, there is no action, suit, inquiry, notice of violation, proceeding or investigation pending or, to the knowledge of the Company, threatened against or affecting the Company, any Subsidiary or any of their respective properties
before or by any court, arbitrator, governmental or administrative agency or regulatory authority (federal, state, county, local or foreign) (collectively, an “Action”), which (i) adversely affects or challenges the legality,
validity or enforceability of any of the Transaction Documents or the Securities, or (ii) could, if there were an unfavorable decision, have or reasonably be expected to result in a Material Adverse Effect. Neither the Company nor any
Subsidiary, nor to the knowledge of the Company any director or officer thereof, is or has been the subject of any Action involving a claim of violation of or liability under federal or state securities laws or a claim of breach of fiduciary duty.
There has not been, and to the knowledge of the Company, there is not pending or contemplated, any investigation by the SEC involving the Company or any current or former director or officer of the Company. The SEC has not issued any stop order or
other order suspending the effectiveness of any registration statement filed by the Company or any Subsidiary under the Exchange Act or the Act. 
 (k) Labor Relations. No material labor dispute exists or, to the knowledge of the Company, is imminent with respect to any of the employees of the Company, which could reasonably be expected
to result in a Material Adverse Effect. 
 (l) Compliance. Neither the Company nor any Subsidiary (i) is in
default under or in violation of (and no event has occurred that has not been waived that, with notice or lapse of time or both, would result in a default by the Company or any Subsidiary under), nor has the Company or any Subsidiary received notice
of a claim that it is in default under or that it is in violation of, any indenture, loan or credit agreement or any other similar agreement or instrument to which it is a party or by which it or any of its properties is bound (whether or not such
default or violation has been waived), (ii) is in violation of any order of any court, arbitrator or governmental body, or (iii) is or has been in violation of any statute, rule or regulation of any governmental authority, including
without limitation all foreign, federal, state and local laws applicable to its business, except in each case under clauses (i)-(iii) above as could not have a Material Adverse Effect. 

(m) Regulatory Permits. The Company and each Subsidiary possess all certificates, authorizations and permits issued by the
appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described in the SEC Reports, except where the failure to possess such permits could not, individually or in the aggregate, have
or reasonably be expected to result in a Material Adverse Effect (“Material Permits”), and neither the Company nor any Subsidiary has received any notice of proceedings relating to the revocation or modification of any
Material Permit. 

  
 17 

 (n) Title to Assets. The Company and each Subsidiary have good and marketable
title in fee simple to all real property owned by them that is material to the business of the Company and each Subsidiary and good and marketable title in all personal property owned by them that is material to the business of the Company and each
Subsidiary, in each case free and clear of all Liens, except for Liens that do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made of such property by the Company and each
Subsidiary and Liens for the payment of federal, state or other taxes, the payment of which is neither delinquent nor subject to penalties. Any real property and facilities held under lease by the Company and each Subsidiary are held by them under
valid, subsisting and enforceable leases of which the Company and each Subsidiary are in compliance. 
 (o) Patents
and Trademarks. The Company and each Subsidiary have, or have rights to use, all patents, patent applications, trademarks, trademark applications, service marks, trade names, copyrights, licenses and other similar rights that are necessary or
material for use in connection with their respective businesses as described in the SEC Reports and which the failure to so have could have a Material Adverse Effect (collectively, the “Intellectual Property Rights”). Neither the
Company nor any Subsidiary has received a written notice that the Intellectual Property Rights used by the Company or any Subsidiary violates or infringes upon the rights of any Person. Except as set forth on Section 4.1(j) to the
Disclosure Schedule, to the knowledge of the Company, all such Intellectual Property Rights are enforceable and there is no existing infringement by another Person of any of the Intellectual Property Rights of the Company or each Subsidiary.

 (p) Insurance. The Company and each Subsidiary are insured by insurers of recognized financial responsibility
against such losses and risks and in such amounts as are prudent and customary in the businesses in which the Company and each Subsidiary are engaged, including but not limited to directors and officers insurance coverage at least equal to the
Maximum Placement. To the best of Company’s knowledge, such insurance contracts and policies are accurate and complete. Neither the Company nor any Subsidiary has any reason to believe that it will not be able to renew its existing insurance
coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business without a significant increase in cost. 

(q) Transactions With Affiliates and Employees. Except as set forth in the SEC Reports, none of the officers or directors
of the Company and, to the knowledge of the Company, none of the employees of the Company is presently a party to any transaction with the Company or any Subsidiary (other than for services as employees, officers and directors), including any
contract, agreement or other arrangement providing for the furnishing of services to or by, providing for rental of real or personal property to or from, or otherwise requiring payments to or from any officer, director or such employee or, to the
knowledge of the Company, any entity in which any officer, director, or any such employee has a substantial interest or is an officer, director, trustee or partner, in each case in excess of $120,000 other than (i) for payment of salary or
consulting fees for services rendered, (ii) reimbursement for expenses incurred on behalf of the Company and (iii) for other employee benefits, including stock option agreements under any equity incentive plan of the Company. 

  
 18 

 (r) Sarbanes-Oxley; Internal Accounting Controls. The Company is in material
compliance with all provisions of the Sarbanes-Oxley Act of 2002, which are applicable to it as of the date of the Commitment Closing. The Company and each Subsidiary maintain a system of internal accounting controls sufficient to provide reasonable
assurance that (i) transactions are executed in accordance with management’s general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to
maintain asset accountability, (iii) access to assets is permitted only in accordance with management’s general or specific authorization, and (iv) the recorded accountability for assets is compared with the existing assets at
reasonable intervals and appropriate action is taken with respect to any differences. The Company has established disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Company and designed such
disclosure controls and procedures to ensure that material information relating to the Company, including its Subsidiaries, is made known to the certifying officers by others within those entities, particularly during the period in which the
Company’s most recently filed periodic report under the Exchange Act, as the case may be, is being prepared. The Company’s certifying officers have evaluated the effectiveness of the Company’s disclosure controls and procedures as of
the date prior to the filing date of the most recently filed periodic report under the Exchange Act (such date, the “Evaluation Date”). The Company presented in its most recently filed periodic report under the Exchange Act the
conclusions of the certifying officers about the effectiveness of the Company’s disclosure controls and procedures based on their evaluations as of the Evaluation Date. Since the Evaluation Date, there have been no significant changes in the
Company’s internal accounting controls or its disclosure controls and procedures or, to the Company’s knowledge, in other factors that could materially affect the Company’s internal accounting controls or its disclosure controls and
procedures. 
 (s) Certain Fees. Except for the payment of the Commitment Fee or as set forth on
Section 4.1(s) to the Disclosure Schedule, no brokerage or finder’s fees or commissions are or will be payable by the Company to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other
Person with respect to the transactions contemplated by this Agreement. Investor shall have no obligation with respect to any fees or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this
Section 4.1(s) (including without limitation as set forth on Section 4.1(s) to the Disclosure Schedule) that may be due in connection with the transactions contemplated by this Agreement or the other Transaction Documents.

 (t) Private Placement. Assuming the accuracy of Investor representations and warranties set forth in
Section 4.2, no registration under the Act is required for the offer and sale of the Securities by the Company to Investor as contemplated hereby. The issuance and sale of the Securities hereunder does not contravene the rules and
regulations of any Trading Market. 
 (u) Investment Company. The Company is not, and is not an Affiliate of, and
immediately after receipt of payment for the Securities, will not be or be an Affiliate of, an “investment company” within the meaning of the Investment Company Act of 1940, as amended. The Company shall conduct its business in a manner so
that it will not become subject to the Investment Company Act. 

  
 19 

 (v) Registration Rights. No Person (other than Investor pursuant to the
Transaction Documents) has any right to cause the Company to effect the registration under the Act of any securities of the Company. 
 (w) Listing and Maintenance Requirements. The Common Stock is registered pursuant to Section 12 of the Exchange Act, and the Company has taken no action designed to, or which to its
knowledge is likely to have the effect of, terminating the registration of the Common Stock under the Exchange Act nor has the Company received any notification that the SEC is contemplating terminating such registration. The Company has not, in the
12 months preceding the Effective Date, received notice from any Trading Market on which the Common Stock is or has been listed or quoted to the effect that the Company is not in compliance with the listing or maintenance requirements of such
Trading Market. The Company is, and has no reason to believe that it will not in the foreseeable future continue to be, in compliance with all such listing and maintenance requirements. 

(x) Application of Takeover Protections. The Company and its Board of Directors have taken all necessary action, if any, in
order to render inapplicable any control share acquisition, business combination, poison pill (including any distribution under a rights agreement) or other similar anti takeover provision under the Company’s Certificate of Incorporation (or
similar charter documents) or the laws of its state of incorporation that is or could become applicable to Investor as a result of Investor and the Company fulfilling their obligations or exercising their rights under the Transaction Documents,
including without limitation the Company’s issuance of the Securities and Investor’s ownership of the Securities. 

(y) Disclosure; Non-Public Information. Except with respect to the information that will be, and to the extent that it
actually is timely publicly disclosed by the Company pursuant to Section 2.2(c)(i), and notwithstanding any other provision in this Agreement or the other Transaction Documents, neither the Company nor any other Person acting on its
behalf has provided Investor or its agents or counsel with any information that constitutes or might constitute material, non-public information, including without limitation this Agreement and the Exhibits, Appendices and Schedules hereto, unless
prior thereto Investor shall have executed a written agreement regarding the confidentiality and use of such information. The Company understands and confirms that neither Investor nor any Affiliate of Investor shall have any duty of trust or
confidence that is owed directly, indirectly, or derivatively to the Company or the shareholders of the Company or to any other Person who is the source of material non-public information regarding the Company. No information contained in the
Disclosure Schedules constitutes material non-public information. There is no adverse material information regarding the Company that has not been publicly disclosed prior to the Effective Date. The Company understands and confirms that Investor
will rely on the foregoing representations and covenants in effecting transactions in securities of the Company. All disclosure provided to Investor regarding the Company, its business and the transactions contemplated hereby, including the
Disclosure Schedules to this Agreement, furnished by or on behalf of the Company with respect to the representations and warranties made herein are true and correct in all material respects and do not contain any untrue statement of a material fact
or omit to state any material fact necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading. 

  
 20 

 (z) No Integrated Offering. Neither the Company, nor any of its Affiliates,
nor any Person acting on its or their behalf has, directly or indirectly, made any offers or sales of any security or solicited any offers to buy any security, under circumstances that would cause this offering of the Securities to be integrated
with prior offerings by the Company for purposes of the Act or which could violate any applicable stockholder approval provisions, including, without limitation, under the rules and regulations of the Trading Market. 

(aa) Financial Condition. As set forth in the SEC Reports, the Company anticipates that all cash resources will be expended
by early in the first quarter of 2011 and, if unable to raise additional financing, the Company may be required to: (1) reduce spending plans, (2) license products or technologies that the Company would otherwise seek to commercialize to
third parties, and/or (3) sell certain assets. In connection with the transactions contemplated by the Transaction Documents: (i) the Company has paid undisputed debts as they matured for at least one year prior to the Effective Date,
(ii) the Company will not be rendered insolvent by such transactions, (iii) after giving effect to such transactions, the Company will be able to pay its short term debts as they mature, (iv) such transactions will not cause the
Company to be left with unreasonably small capital for the business in which it is engaged and proposes to be engaged, (v) the Company did not and does not have any intent to hinder, delay, or defraud any of its creditors, (vi) the Company
has a valid business reason for entering into such transactions, and (vii) the Company is receiving new value and consideration therefor constituting reasonably equivalent value and fair market value consideration. 

(bb) Tax Status. The Company and each of its Subsidiaries has made or filed all federal, state and foreign income and all
other tax returns, reports and declarations required by any jurisdiction to which it is subject (unless and only to the extent that the Company and each of its Subsidiaries has set aside on its books provisions reasonably adequate for the payment of
all unpaid and unreported taxes) and has paid all taxes and other governmental assessments and charges that are material in amount, shown or determined to be due on such returns, reports and declarations, except those being contested in good faith
and has set aside on its books provisions reasonably adequate for the payment of all taxes for periods subsequent to the periods to which such returns, reports or declarations apply. There are no unpaid taxes in any material amount claimed to be due
by the taxing authority of any jurisdiction, and the officers of the Company know of no basis for any such claim. The Company has not executed a waiver with respect to the statute of limitations relating to the assessment or collection of any
foreign, federal, statue or local tax. None of the Company’s tax returns is presently being audited by any taxing authority. 
 (cc) No General Solicitation or Advertising. Neither the Company nor, to the knowledge of the Company, any of its directors or officers (i) has conducted or will conduct any general
solicitation (as that term is used in Rule 502(c) of Regulation D) or general advertising with respect to the sale of the Securities, or (ii) made any offers or sales of any security or solicited any offers to buy any security under any
circumstances that would require registration of the Securities under the Act or made any “directed selling efforts” as defined in Rule 902 of Regulation S. 

  
 21 

 (dd) Foreign Corrupt Practices. Neither the Company, nor to the knowledge of
the Company, any agent or other person acting on behalf of the Company, has (i) directly or indirectly, used any corporate funds for unlawful contributions, gifts, entertainment or other unlawful expenses related to foreign or domestic
political activity, (ii) made any unlawful payment to foreign or domestic government officials or employees or to any foreign or domestic political parties or campaigns from corporate funds, (iii) failed to disclose fully any contribution
made by the Company (or made by any person acting on its behalf of which the Company is aware) which is in violation of law, or (iv) violated in any material respect any provision of the Foreign Corrupt Practices Act of 1977, as amended.

 (ee) Acknowledgment Regarding Investor’s Purchase of Securities. The Company acknowledges and agrees that
Investor is acting solely in the capacity of arm’s length purchaser with respect to this Agreement and the transactions contemplated hereby. The Company further acknowledges that Investor is not acting as a financial advisor or fiduciary of the
Company (or in any similar capacity) with respect to this Agreement and the transactions contemplated hereby and any statement made by Investor or any of its representatives or agents in connection with this Agreement and the transactions
contemplated hereby is not advice or a recommendation and is merely incidental to Investor’s purchase of the Securities. The Company further represents to Investor that the Company’s decision to enter into this Agreement has been based
solely on the independent evaluation of the Company and its representatives. 
 (ff) Accountants. The
Company’s accountants are set forth in the SEC Reports and such accountants are an independent registered public accounting firm as required by the SEC Guidance. 
 (gg) No Disagreements with Accountants and Lawyers. There are no disagreements of any kind presently existing, or reasonably anticipated by the Company to arise, between the accountants and
lawyers formerly or presently employed by the Company, and the Company is current with respect to any fees owed to its accountants and lawyers, except for any past-due amounts that may be owed in the ordinary course of business. 

(hh) Registration Statements and Prospectuses. 
 (i) The offer and sale of the Common Shares as contemplated hereby complies with the requirements of Rule 415 under the Act. 

(ii) The Company has not, directly or indirectly, used or referred to any “free writing prospectus” (as defined in Rule
405 under the Act) except in compliance with Rules 164 and 433 under the Act. 
 (iii) The Company is not an
“ineligible issuer” (as defined in Rule 405 under the Act) as of the eligibility determination date for purposes of Rules 164 and 433 under the Act with respect to the offering of the Common Shares contemplated by any Registration
Statement filed or to be filed, without taking into account any determination by the SEC pursuant to Rule 405 under the Act that it is not necessary under the circumstances that the Company be considered an “ineligible issuer.” 

  
 22 

 (ii) Section 5 Compliance. No representation or warranty or other
statement made by Company in the Transaction Documents contains any untrue statement or omits to state a material fact necessary to make any of them, in light of the circumstances in which it was made, not misleading. The Company is not aware of any
facts or circumstances that would cause the transactions contemplated by the Transaction Documents, when consummated, to violate Section 5 of the Act or other federal or state securities laws or regulations. 

4.2 Representations and Warranties of Investor. Investor hereby represents and warrants as of the Effective Date as
follows: 
 (a) Organization; Authority. Investor is an entity duly incorporated, validly existing and in good
standing under the laws of the jurisdiction of its organization with full right, company power and authority to enter into and to consummate the transactions contemplated by the Transaction Documents and otherwise to carry out its obligations
thereunder. The execution, delivery and performance by Investor of the transactions contemplated by this Agreement have been duly authorized by all necessary company or similar action on the part of Investor. Each Transaction Document to which it is
a party has been (or will be) duly executed by Investor, and when delivered by Investor in accordance with the terms hereof, will constitute the valid and legally binding obligation of Investor, enforceable against it in accordance with its terms,
except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by
laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii) insofar as indemnification and contribution provisions may be limited by applicable law. 

(b) Investor Status. At the time Investor was offered the Securities, it was, and at the Effective Date it is an
“accredited investor” as defined in Rule 501(a) under the Act. 
 (c) Experience of Investor. Investor,
either alone or together with its representatives, has such knowledge, sophistication and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment in the Securities, and has so
evaluated the merits and risks of such investment. Investor is able to bear the economic risk of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment. 

(d) General Solicitation. Investor is not purchasing the Securities as a result of any advertisement, article, notice or
other communication regarding the Securities published in any newspaper, magazine or similar media or broadcast over television or radio or presented at any seminar or any other general solicitation or general advertisement. 

The Company acknowledges and agrees that Investor does not make or has not made any representations or warranties with respect to the
transactions contemplated hereby other than those specifically set forth in this Section 4.2. 

  
 23 

 ARTICLE 5 
 OTHER AGREEMENTS OF THE PARTIES 
 5.1 Transfer Restrictions

 (a) The Securities may only be disposed of in compliance with state and federal securities laws. In connection with
any transfer of Securities other than (i) pursuant to an effective Registration Statement or Rule 144, (ii) to the Company, (iii) to an Affiliate of Investor, or (iv) in connection with a pledge as contemplated in
Section 5.1(b), the Company may require the transferor thereof to provide to the Company an opinion of Luce Forward Hamilton & Scripps LLP (“Luce Forward”), or other counsel selected by the transferor and
reasonably acceptable to the Company, to the effect that such transfer does not require registration of such transferred Securities under the Act. 
 (b) Investor agrees to the imprinting, so long as is required by this Section 5.1, of the following legend, or substantially similar legend, on any certificate evidencing Securities
other than DWAC Shares: 
 NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN
REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY,
MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN
ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS. THESE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. 

The Company agrees to cause such legend to be removed immediately upon effectiveness of a Registration Statement, or when any Common
Shares are eligible for sale under Rule 144 and, if requested by Investor or the transfer agent, to promptly provide at the Company’s expense a legal opinion of counsel to the Company confirming that such legend may be removed. Company further
acknowledges and agrees that Investor may from time to time pledge pursuant to a bona fide margin agreement with a registered broker-dealer or grant a security interest in some or all of the Securities to a financial institution that is an
“accredited investor” as defined in Rule 501(a) under the Act and who agrees to be bound by the provisions of this Agreement and, if required under the terms of such arrangement, Investor may transfer pledged or secured Securities to the
pledgees or secured parties. Such a pledge or transfer would not be subject to approval of the Company and no legal opinion of legal counsel of the pledgee, secured party or pledgor shall be required in connection therewith. Further, no notice shall
be required of such pledge. At Investor’s reasonable expense, the Company will execute and deliver such documentation as a pledgee or secured party of Securities may reasonably request in connection with a pledge or transfer of the Securities.

  
 24 

 5.2 Furnishing of Information. As long as Investor owns Securities, the
Company covenants to timely file (or obtain extensions in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after the Effective Date pursuant to the Exchange Act. Upon the request of
Investor, the Company shall deliver to Investor a written certification of a duly authorized officer as to whether it has complied with the preceding sentence. As long as Investor owns Securities, if the Company is not required to file reports
pursuant to such laws, it will prepare and furnish to Investor and make publicly available in accordance with Rule 144(c) such information as is required for Investor to sell the Securities under Rule 144. The Company further covenants that it will
take such further action as any holder of Securities may reasonably request, all to the extent required from time to time to enable such Person to sell such Securities without registration under the Act within the limitation of the exemptions
provided by Rule 144. 
 5.3 Integration. The Company shall not sell, offer for sale or solicit offers to
buy or otherwise negotiate in respect of any security (as defined in Section 2 of the Act) that would be integrated with the offer or sale of the Securities in a manner that would require the registration under the Act of the sale of the
Securities to Investor or that would be integrated with the offer or sale of the Securities for purposes of the rules and regulations of any Trading Market such that it would require stockholder approval prior to the closing of such other
transaction unless stockholder approval is obtained before the closing of such subsequent transaction. 
 5.4
Securities Laws Disclosure; Publicity. The Company and Investor shall consult with each other in issuing any press releases with respect to the transactions contemplated hereby, and neither the Company nor Investor shall issue any such
press release or otherwise make any such public statement without the prior consent of the Company, with respect to any such press release of Investor, or without the prior consent of Investor, with respect to any such press release of the Company,
which consent shall not unreasonably be withheld or delayed, except if such disclosure is required by law or Trading Market regulations, in which case the disclosing party shall promptly provide the other party with prior notice of such public
statement or communication. Notwithstanding the foregoing, the Company shall not publicly disclose the name of Investor, or include the name of Investor in any filing with the SEC or any regulatory agency or Trading Market, without the prior written
consent of Investor, except (i) as contained in the Current Report on Form 8-K and press release filed pursuant to the Original Agreement, (ii) as required by federal securities law in connection with any registration statement under which
the Common Shares are registered, (iii) to the extent such disclosure is required by law or Trading Market regulations, in which case the Company shall provide Investor with prior notice of such disclosure, or (iv) to the extent such
disclosure is required in any SEC Report filed by the Company. 
 5.5 Shareholders Rights Plan. No claim
will be made or enforced by the Company or, to the knowledge of the Company, any other Person that Investor is an “Acquiring Person” under any shareholders rights plan or similar plan or arrangement in effect or hereafter adopted by the
Company, or that Investor could be deemed to trigger the provisions of any such plan or arrangement, by virtue of receiving Securities under the Transaction Documents or under any other agreement between the Company and Investor. The Company shall
conduct its business in a manner so that it will not become subject to the Investment Company Act of 1940, as amended. 

  
 25 

 5.6 Non-Public Information. The Company covenants and agrees that
neither it nor any other Person acting on its behalf will provide Investor or its agents or counsel with any information that the Company believes or reasonably should believe constitutes material non-public information, unless prior thereto
Investor shall have executed a written agreement regarding the confidentiality and use of such information. On and after the Effective Date, except as may be set forth in a written and executed confidentiality agreement, neither Investor nor any
Affiliate Investor shall have any duty of trust or confidence that is owed directly, indirectly, or derivatively, to the Company or the shareholders of the Company, or to any other Person who is the source of material non-public information
regarding the Company. The Company understands and confirms that Investor shall be relying on the foregoing in effecting transactions in securities of the Company. 
 5.7 Reimbursement. If Investor becomes involved in any capacity in any proceeding by or against any Person who is a stockholder of the Company (except as a result of sales, pledges,
margin sales and similar transactions by Investor to or with any current stockholder), solely as a result of Investor’s acquisition of the Securities under this Agreement, the Company will reimburse Investor for its reasonable legal and other
reasonable expenses (including the reasonable cost of any investigation preparation and travel in connection therewith) incurred in connection therewith, as such expenses are incurred, or will assume the defense of Investor in such matter. The
reimbursement obligations of the Company under this Section 5.7 shall be in addition to any liability which the Company may otherwise have, shall extend upon the same terms and conditions to any Affiliates of Investor who are actually
named in such action, proceeding or investigation, and partners, directors, agents, employees and controlling persons (if any), as the case may be, of Investor and any such Affiliate, and shall be binding upon and inure to the benefit of any
successors, assigns, heirs and personal representatives of the Company, Investor and any such Affiliate and any such Person. The Company also agrees that neither Investor nor any such Affiliates, partners, directors, agents, employees or controlling
persons shall have any liability to the Company or any Person asserting claims on behalf of or in right of the Company solely as a result of acquiring the Securities under this Agreement. 

5.8 Indemnification of Investor 
 (a) Company Indemnification Obligation. Subject to the provisions of this Section 5.8, the Company will indemnify and hold Investor and any Warrant holder, their Affiliates and
attorneys, and each of their directors, officers, shareholders, partners, employees, agents, and any person who controls Investor within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (collectively, the
“Investor Parties” and each an “Investor Party”), harmless from any and all losses, liabilities, obligations, claims, contingencies, damages, reasonable costs and expenses, including all judgments, amounts paid in
settlements, court costs and reasonable attorneys’ fees and costs of investigation (collectively, “Losses”) that any Investor Party may suffer or incur as a result of or relating to (i) any breach of any of the
representations, warranties, covenants or agreements made by the Company in this Agreement or in the other Transaction Documents, (ii) any action instituted against any Investor Party, or any of them or their respective Affiliates, by any
stockholder of the Company who is not an Affiliate 

  
 26 

 
of an Investor Party, with respect to any of the transactions contemplated by the Transaction Documents (unless such action is based upon a breach of Investor’s representations, warranties
or covenants under the Transaction Documents or any agreements or understandings Investor may have with any such stockholder or any violations by Investor of state or federal securities laws or any conduct by Investor which constitutes fraud, gross
negligence, willful misconduct or malfeasance), (iii) any untrue statement or alleged untrue statement of a material fact contained in a Registration Statement (or in a Registration Statement as amended by any post-effective amendment thereof
by the Company), or arising out of or based upon any omission or alleged omission to state a material fact required to be stated therein or necessary to make the statements therein not misleading, and/or (iv) any untrue statement or alleged
untrue statement of a material fact included in any Prospectus (or any amendments or supplements to any Prospectus), in any free writing prospectus, in any “issuer information” (as defined in Rule 433 under the Act) of the Company, or in
any Prospectus together with any combination of one or more of the free writing prospectuses, if any, or arising out of or based upon any omission or alleged omission to state a material fact necessary in order to make the statements therein, in the
light of the circumstances under which they were made, not misleading. 
 (b) Indemnification Procedures. If any
action shall be brought against an Investor Party in respect of which indemnity may be sought pursuant to this Agreement, such Investor Party shall promptly notify the Company in writing, and the Company shall have the right to assume the defense
thereof with counsel of its own choosing. The Investor Parties shall have the right to employ separate counsel in any such action and participate in the defense thereof, but the fees and expenses of such counsel shall be at the expense of the
Investor Parties except to the extent that (i) the employment thereof has been specifically authorized by the Company in writing, (ii) the Company has failed after a reasonable period of time to assume such defense and to employ counsel or
(iii) in such action there is, in the reasonable opinion of such separate counsel, a material conflict with respect to the dispute in question on any material issue between the position of the Company and the position of the Investor Parties
such that it would be inappropriate for one counsel to represent the Company and the Investor Parties. The Company will not be liable to the Investor Parties under this Agreement (i) for any settlement by an Investor Party effected without the
Company’s prior written consent, which shall not be unreasonably withheld or delayed; or (ii) to the extent, but only to the extent that a loss, claim, damage or liability is either attributable to Investor’s breach of any of the
representations, warranties, covenants or agreements made by Investor in this Agreement or in the other Transaction Documents. 

5.9 Reservation of Securities. The Company shall maintain a reserve from its duly authorized shares of Common Stock
for issuance pursuant to the Transaction Documents in such amount as may be required to fulfill its obligations in full under the Transaction Documents. 
 5.10 Limited Standstill. The Company will deliver to Investor on or before each Tranche Closing Date, and will honor and enforce, and will take reasonable actions to assist Investor
in enforcing, the provisions of, the Lock-Up Agreements with the Company’s officers, directors and beneficial owners of 10% or more of the Common Stock. 
 5.11 Prospectus Availability and Changes. The Company will make available to Investor upon request, and thereafter from time to time will furnish Investor, as many copies of

  
 27 

 
any Prospectus (or of the Prospectus as amended or supplemented if the Company shall have made any amendments or supplements thereto after the effective date of the applicable Registration
Statement) as Investor may request for the purposes contemplated by the Act; and in case Investor is required to deliver a prospectus after the nine-month period referred to in Section 10(a)(3) of the Act in connection with the sale of the
Common Shares, or after the time a post-effective amendment to the applicable Registration Statement is required pursuant to Item 512(a) of Regulation S-K under the Act, the Company will prepare, at its expense, promptly upon request such
amendment or amendments to the Registration Statement and the Prospectus as may be necessary to permit compliance with the requirements of Section 10(a)(3) of the Act or Item 512(a) of Regulation S-K under the Act, as the case may be. The
Company will advise Investor promptly of the happening of any event within the time during which a Prospectus is required to be delivered under the Act which could require the making of any change in the Prospectus then being used so that the
Prospectus would not include an untrue statement of material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading, and to advise Investor
promptly if, during such period, it shall become necessary to amend or supplement any Prospectus to cause such Prospectus to comply with the requirements of the Act, and in each case, during such time, to prepare and furnish, at the Company’s
expense, to Investor promptly such amendments or supplements to such Prospectus as may be necessary to reflect any such change or to effect such compliance. The Company shall have no obligation to separately advise Investor of, or deliver copies to
Investor of, the SEC Reports, all of which Investor shall be deemed to have notice of. 
 5.12 Required
Approval. No transactions contemplated under this Agreement or the Transaction Documents shall be consummated for an amount that would require approval by any Trading Market or Company stockholders under any approval provisions, rules or
regulations of any Trading Market applicable to the Company, unless and until such approval is obtained. Company shall use best efforts to obtain any required approval as soon as possible. 

5.13 Activity Restrictions. For so long as Investor or any of its Affiliates holds any Preferred Shares, Commitment
Fee Shares, Warrant, Warrant Shares, or DWAC Shares, neither Investor nor any Affiliate will: (i) vote any shares of Common Stock owned or controlled by it, solicit any proxies, or seek to advise or influence any Person with respect to any
voting securities of the Company; (ii) engage or participate in any actions, plans or proposals which relate to or would result in (a) acquiring additional securities of the Company, alone or together with any other Person, which would
result in Investor and/or its Affiliates exceeding the Investor Ownership Limit, (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving Company or any of its subsidiaries, (c) a sale or
transfer of a material amount of assets of the Company or any of its subsidiaries, (d) any change in the present board of directors or management of the Company, including any plans or proposals to change the number or term of directors or to
fill any existing vacancies on the board, (e) any material change in the present capitalization or dividend policy of the Company, (f) any other material change in the Company’s business or corporate structure, including but not
limited to, if the Company is a registered closed-end investment company, any plans or proposals to make any changes in its investment policy for which a vote is required by Section 13 of the Investment Company Act of 1940, (g) changes in
the Company’s charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Company by any Person, (h)

  
 28 

 
causing a class of securities of the Company to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered
national securities association, (i) a class of equity securities of the Company becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Act, or (j) any action, intention, plan or arrangement similar to
any of those enumerated above; or (iii) request the Company or its directors, officers, employees, agents or representatives to amend or waive any provision of this Section 5.13. 

5.14 Registration Statements and Prospectuses.  

(a) The Company will use its best efforts to file within 45 (forty-five) calendar days after the Effective Date (or as soon as
possible thereafter), to cause to become effective as soon as possible thereafter, and to remain effective until all Common Shares have been sold or are Rule 144 Eligible, a Registration Statement for the resale of all Common Shares issued or
issuable hereunder including without limitation all Warrant Shares underlying the Warrant or such lesser number of Common Shares permitted to be registered pursuant to SEC Guidance. Each Registration Statement shall comply when it becomes effective,
and, as amended or supplemented, at the time of any Tranche Notice Date, Tranche Closing Date, or issuance of any Common Shares, and at all times during which a prospectus is required by the Act to be delivered in connection with any sale of Common
Shares, will comply, in all material respects, with the requirements of the Act. 
 (b) Each Registration Statement, as
of its respective effective time, will not, as applicable, contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. 

(c) Each Prospectus will comply, as of its date and the date it will be filed with the SEC, and, at the time of any Tranche Notice
Date, Tranche Closing Date, or issuance of any Common Shares, and at all times during which a prospectus is required by the Act to be delivered in connection with any sale of Common Shares, will comply, in all material respects, with the
requirements of the Act. 
 (d) At no time during the period that begins on the date a Prospectus is filed with the SEC
and ends at the time a Prospectus is no longer required by the Act to be delivered in connection with any sale of Common Shares will any such Prospectus, as then amended or supplemented, include an untrue statement of a material fact or omit to
state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. 
 (e) Each Registration Statement will meet, and the offering and sale of the Common Shares as contemplated hereby will comply with, the requirements of Rule 415 under the Act. 

(f) The Company will not, directly or indirectly, use or refer to any “free writing prospectus” (as defined in Rule 405
under the Act) except in compliance with Rules 164 and 433 under the Act. 

  
 29 

 (g) The Company will not be an “ineligible issuer” (as defined in Rule 405
under the Act) as of the eligibility determination date for purposes of Rules 164 and 433 under the Act with respect to the offering of the Common Shares contemplated by any Registration Statement that is filed, without taking into account any
determination by the SEC pursuant to Rule 405 under the Act that it is not necessary under the circumstances that the Company be considered an “ineligible issuer.” 
 (h) If (i) there is material non-public information regarding the Company which the Company’s Board of Directors reasonably determines not to be in the Company’s best interest to
disclose and which the Company is not otherwise required to disclose and which the Company would be required to disclose under the Registration Statement, or (ii) there is a significant business opportunity (including, but not limited to, the
acquisition or disposition of assets other than in the ordinary course of business or any merger, consolidation, tender offer or other similar transaction) available to the Company which the Board of Directors reasonably determines not to be in the
Company’s best interest to disclose and which the Company would be required to disclose under the Registration Statement, and in the case of either (i) or (ii) the Company reasonably believes it is required under SEC Guidance to
postpone or suspend filing or effectiveness of the Registration Statement, the Company shall immediately notify Investor in writing that the Registration Statement may not be used in connection with any sales of the Company’s securities for a
period not to exceed 10 consecutive days (a “Blackout Period”), provided that the aggregate of all Blackout Periods may not exceed 30 days during any 12 month period. During a Blackout Period, the Company shall not be permitted to deliver
any Tranche Notices or effect any Tranche Closings. 
 5.15 Investor Due Diligence. Investor shall
have the right and opportunity to conduct due diligence, at its own expense, with respect to any Registration Statement or Prospectus in which the name of Investor or any Affiliate of Investor appears. 

5.16 Commitment Fee Shares. On the date that any of the Commitment Fee Shares first become Rule 144 Eligible,
the Company shall cause all restrictive legends to be removed from the stock certificate(s) evidencing such Commitment Fee Shares, including without limitation causing the Company’s legal counsel to issue any necessary opinions to the Transfer
Agent, and such Commitment Fee Shares shall be delivered to Investor or its designee as DWAC Shares on the date that such shares become Rule 144 Eligible. 
 5.17 Registration. In the event that all Common Shares that Company is required to make available to Investor, including as Warrant Shares upon the exercise of Warrants, are
not, by the one year anniversary of the Effective Date, made available to Investor as DWAC Shares without restriction on resale pursuant to (i) an effective Registration Statement (with the number of Warrant Shares included therein subject to
the limitation set forth in Section 5.14(a) hereof), or (ii) Rule 144 without requiring discharge by payment in full of any notes given in exchange for any Warrant Shares prior to the sale thereof or limiting the amount of
securities that may be sold, Company shall, at Investor’s election in Investor’s sole discretion, exercise the Company’s Redemption Option provided for in Section 6 of the Certificate of Designations to effectuate the
repurchase of any outstanding Preferred Shares. 

  
 30 

 ARTICLE 6 
 MISCELLANEOUS 
 6.1 Fees and Expenses. Except
for the $20,000.00 non-refundable document preparation fee previously paid by the Company to counsel for Investor (which shall cover only the initial draft of the Transaction Documents and one week of legal fees, with all additional fees of counsel
for Investor paid by the Company), the receipt of which is hereby acknowledged, and the $5,000.00 non-refundable administrative fee payable to counsel for Investor at each Tranche Closing, or as may be otherwise provided in this Agreement, each
party shall pay the fees and expenses of its own advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party incident to the negotiation, preparation, execution, delivery and performance of the Transaction
Documents. The Company acknowledges and agrees that Luce Forward solely represents Investor, and does not represent the Company or its interests in connection with the Transaction Documents or the transactions contemplated thereby. The Company shall
pay all stamp and other taxes and duties levied in connection with the sale of the Securities, if any. 
 6.2
Notices. Unless a different time of day or method of delivery is set forth in the Transaction Documents, any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in
writing and shall be deemed given and effective on the earliest of: (a) the date of transmission, if such notice or communication is delivered via facsimile or electronic mail prior to 5:30 p.m. Eastern time on a Trading Day and an electronic
confirmation of delivery is received by the sender, (b) the next Trading Day after the date of transmission, if such notice or communication is delivered later than 5:30 p.m. Eastern time or on a day that is not a Trading Day, (c) the next
Trading Day after receipt from a nationally recognized overnight courier service, (d) three Trading Days following the date of mailing by U.S. mail, or (e) upon actual receipt by the party to whom such notice is given by personal delivery.
The addresses for such notices and communications are those set forth following the signature page hereof, or such other address as may be designated in writing hereafter, in the same manner, by such Person. 

6.3 Amendments; Waivers. No provision of this Agreement may be waived or amended except in a written
instrument signed, in the case of an amendment, by the Company and Investor or, in the case of a waiver, by the party against whom enforcement of any such waiver is sought. No waiver of any default with respect to any provision, condition or
requirement of this Agreement shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to
exercise any right hereunder in any manner impair the exercise of any such right. 
 6.4 Headings.
The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed to limit or affect any of the provisions hereof 
 6.5 Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties and their successors and permitted assigns. Neither the Company nor
Investor may assign this Agreement. 

  
 31 

 6.6 No Third-Party Beneficiaries. This Agreement is intended for
the benefit of the parties hereto and their respective successors and permitted assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person, except as otherwise set forth in Section 5.8.

 6.7 Governing Law; Dispute Resolution. All questions concerning the construction, validity,
enforcement and interpretation of the Transaction Documents shall be governed by and construed and enforced in accordance with the laws of the State of New York, without regard to the principles of conflicts of law that would require or permit the
application of the laws of any other jurisdiction. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether
brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York. Each party 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 (including with respect to the enforcement of any of the Transaction Documents), 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 improper or inconvenient venue for such proceeding. Each party hereby irrevocably waives personal service of process and consents to process being served in any such suit,
action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall
constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. The parties hereby waive all rights to a trial by jury. If
either party shall commence an action or proceeding to enforce any provisions of the Transaction Documents, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its reasonable attorneys’ fees and
other costs and expenses reasonably incurred in connection with the investigation, preparation and prosecution of such action or proceeding. 
 6.8 Survival. The representations and warranties contained herein shall survive the Closing and the delivery and exercise of the Securities. 

6.9 Execution. This Agreement may be executed in two or more counterparts, all of which when taken together
shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that both parties need not sign the same counterpart. In the event that
any signature is delivered by facsimile transmission or in a PDF by e-mail transmission, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect
as if such facsimile signature page were an original thereof. 
 6.10 Severability. If any provision
of this Agreement is held to be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Agreement shall not in any way be affected or impaired thereby and the parties will attempt to
agree upon a valid and enforceable provision that is a reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Agreement. 

  
 32 

 6.11 Replacement of Securities. If any certificate or instrument
evidencing any Securities is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof, or in lieu of and substitution therefor, a new certificate or
instrument, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. The applicants for a new certificate or instrument under such circumstances
shall also pay any reasonable third-party costs associated with the issuance of such replacement Securities. 
 6.12
Remedies. In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of Investor and the Company will be entitled to specific performance under the Transaction
Documents. The parties agree that monetary damages may not be adequate compensation for any loss incurred by reason of any breach of obligations described in the foregoing sentence and hereby agrees to waive in any action for specific performance of
any such obligation the defense that a remedy at law would be adequate. Neither the Company nor Investor shall be liable for special, indirect, consequential or punitive damages suffered or alleged to be suffered by the other party or any third
party, whether arising from or related to the Transaction Documents or otherwise. 
 6.13 Payment Set
Aside. To the extent that the Company makes a payment or payments to Investor pursuant to any Transaction Document or Investor enforces or exercises its rights thereunder, and such payment or payments or the proceeds of such
enforcement or exercise or any part thereof are subsequently invalidated, declared to be fraudulent or preferential, set aside, recovered from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee,
receiver or any other person under any law (including, without limitation, any bankruptcy law, state or federal law, common law or equitable cause of action), then to the extent of any such restoration the obligation or part thereof originally
intended to be satisfied shall be revived and continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred. 
 6.14 Liquidated Damages. The Company’s obligations to pay any partial liquidated damages or other amounts owing under the Transaction Documents is a continuing obligation
of the Company and shall not terminate until all unpaid partial liquidated damages and other amounts have been paid notwithstanding the fact that the instrument or security pursuant to which such partial liquidated damages or other amounts are due
and payable shall have been cancelled. 
 6.15 Time of the Essence. Time is of the essence with
respect to all provisions of this Agreement that specify a time for performance. 
 6.16
Construction. The parties agree that each of them and/or their respective counsel has reviewed and had an opportunity to revise the Transaction Documents and, therefore, the normal rule of construction to the effect that any
ambiguities are to be resolved against the drafting party shall not be employed in the interpretation of the Transaction Documents or any 

  
 33 

 
amendments hereto. The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent, and no rules of strict construction will be applied
against any party. 
 6.17 Entire Agreement. This Agreement, together with the Exhibits, Appendices
and Schedules hereto, contains the entire agreement and understanding of the parties, and supersedes all prior and contemporaneous agreements, term sheets, letters, discussions, communications and understandings, both oral and written, which the
parties acknowledge have been merged into this Agreement. No party, representative, attorney or agent has relied upon any collateral contract, agreement, assurance, promise, understanding or representation not expressly set forth hereinabove. The
parties hereby expressly waive all rights and remedies, at law and in equity, directly or indirectly arising out of or relating to, or which may arise as a result of, any Person’s reliance on any such assurance. 

  
 34 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by
their respective authorized signatories as of the date first indicated above. 
 ENTECH SOLAR, INC. 

 

			
		
	By:	 	 /s/ Shelley Hollingsworth

	 Name:
	 	 Shelley Hollingsworth

	 Title:
	 	 CFO and Treasurer

 SOCIUS CG II, LTD. 
  

			
	By:	 	 /s/ Terren Peizer

	 Name:
	 	 Terren Peizer

	 Title:
	 	 Managing Director

 Addresses for Notice 
 To Company: 
 Entech Solar, Inc. 
 13301 Park Vista Boulevard, Suite 100 
 Fort Worth, Texas 76177 

Attention: Shelley Hollingsworth, CFO 
 Fax No.:
(817) 224-3503 
 Email: SHollingsworth@entechsolar.com 
 with copies (which shall not constitute notice) to: 
 Bingham McCutchen LLP 

399 Park Avenue 
 New York, New York 10022

 Attention: Jacob J. Worenklein, Esq. 

Fax No.: (212) 752-5378 
 Email:
jacob.worenklein@bingham.com 
  

					
		  	 To Investor:
  

Socius CG II, Ltd.
  
 Clarendon House
 2 Church Street
 Hamilton HM 11 Bermuda
 Fax No.: (310) 444-4394

Email: terren@sociuscg.com
  
 with a copy (which shall not constitute notice) to:
  
 Luce Forward Hamilton & Scripps LLP
 601 South Figueroa Street, Suite 3900

Los Angeles, California 90017
 Attention: John C.
Kirkland, Esq.
 Fax No.: (213) 452-8035
 Email: jkirkland@luce.com

 Exhibit A 
 Form of Warrant 

 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO
WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF
(A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) AN OPINION OF COUNSEL (WHICH COUNSEL SHALL BE SELECTED BY THE HOLDER), IN A GENERALLY ACCEPTABLE FORM, THAT REGISTRATION IS NOT
REQUIRED UNDER SAID ACT OR (II) UNLESS SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED
BY THE SECURITIES. 
 ENTECH SOLAR, INC. 

AMENDED AND RESTATED 

WARRANT TO PURCHASE COMMON STOCK 

 

			
	Warrant No.: 2010-1	  	Issuance Date: November [    ], 2010

 Number of Warrant Shares: $[            ] 
 Exercise Price: $0.[            ] per share 
 Entech Solar, Inc., a Delaware corporation (“Company”), hereby certifies that, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Socius CG
II, Ltd., a Bermuda exempted company, the holder hereof, or its designees or assigns (“Holder”), is obligated, subject to the terms set forth herein, to purchase from the Company, at the Exercise Price set forth herein, upon
automatic exercise of this Amended and Restated Warrant to Purchase Common Stock (including any warrant issued in exchange, transfer or replacement hereof, the “Warrant”), subject to acceleration pursuant to Section 3.3
hereof, that number of duly authorized, validly issued, fully paid and non-assessable shares of Common Stock set forth above and as adjusted herein (the “Warrant Shares”). 

This Warrant is issued pursuant to the Amended and Restated Preferred Stock Purchase Agreement dated November [ ], 2010, by and among the
Company and the investor referred to therein (the “Purchase Agreement”). Except as otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in ARTICLE 13 hereof. 

This Warrant fully amends and restates the Warrant to Purchase Common Stock issued by the Company to Holder dated February 19, 2010
(the “Prior Warrant”), which such Prior Warrant shall be surrendered to the Company by the Holder for cancellation and is hereby cancelled and voided in its entirety ab initio. 

  
 1 

 This Warrant shall consist of and be exercisable in tranches (each, a “Warrant
Tranche”), with a separate tranche being created upon each delivery of a Tranche Notice under the Purchase Agreement. Each Warrant Tranche will obligate the Holder to exercise the Warrant and purchase a number of shares of Common Stock with
an Aggregate Exercise Price equal to 135% of the Tranche Purchase Price for the applicable Tranche Notice. Attached to this Warrant is a schedule (the “Warrant Exercise Schedule”) that sets forth the issuance date, the number of
Warrant Shares, and the Exercise Price for each Warrant Tranche. The Warrant Exercise Schedule shall be updated by the Company, with an updated copy provided to the Holder, promptly following each exercise of this Warrant. Notwithstanding anything
to the contrary in this Warrant, no portion of this Warrant shall vest or be exercisable except under the Warrant Tranches (the “Tranche Limitation”). 
 In no event shall the Company be permitted to deliver a Tranche Notice if the number of registered shares underlying this Warrant is insufficient to cover the portion of the Warrant that will vest and
become automatically exercisable in connection with such Tranche Notice. If the number of registered shares underlying this Warrant is or becomes insufficient to permit the Company to issue registered shares upon exercise of this Warrant, the
Company shall promptly amend the Registration Statement to include more shares thereunder, with such amendment to be filed sufficiently in advance of the date the Company intends to deliver a Tranche Notice so as to ensure that registered shares are
available to Holder on the Tranche Notice Date. 
 ARTICLE 1 

EXERCISE OF WARRANT. 
 1.1 Mechanics of Exercise. 
 1.1.1 Subject to the terms and
conditions hereof (including without limitation the Tranche Limitation), this Warrant shall be automatically exercised by the Holder on each Tranche Notice Date, with such exercise documented by (i) delivery by Holder of a written notice to the
Company, in the form attached hereto as Appendix 1 (the “Exercise Notice”), of the exercise of this Warrant, and (ii) 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”), with such payment made, at Holder’s option, (x) in cash or by wire transfer of immediately available funds, (y) by the
issuance and delivery of a recourse promissory note substantially in the form attached hereto as Appendix 2 (each, a “Recourse Note”), or (z) if applicable, by cashless exercise pursuant to Section 1.3. 

1.1.2 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. 
 1.1.3 On the Trading Day on which the Company has received each of the Exercise Notice and the Aggregate
Exercise Price (the “Exercise Delivery Documents”) from the 

  
 2 

 
Holder by 6:30 p.m. Eastern time, or on the next Trading Day if the Exercise Delivery Documents are received after 6:30 p.m. Eastern time or on a non-Trading Day (in each case, the
“Exercise Delivery Date”), the Company shall transmit (i) a facsimile acknowledgment of confirmation of receipt of the Exercise Delivery Documents to the Holder, and (ii) an electronic copy of its share issuance
instructions to the Holder and to the Company’s transfer agent (the “Transfer Agent”), with such transmissions to comply with the notice provisions contained in Section 6.2 of the Purchase Agreement, and shall
instruct and authorize the Transfer Agent to credit such aggregate number of freely-tradable Warrant Shares to which the Holder is entitled to receive upon such exercise to the Holder’s or its designee’s balance account with The Depository
Trust Company (DTC) through the Fast Automated Securities Transfer (FAST) Program through its Deposit Withdrawal Agent Commission (DWAC) system, with such credit to occur no later than 12:00 p.m. Eastern Time on the Trading Day following the
Exercise Delivery Date, time being of the essence; provided, however, that if any Warrant Shares issuable in connection with the Company’s delivery of a Tranche Notice are not credited as DWAC Shares by 12:00 p.m. Eastern Time on
the Trading Day following the Tranche Notice Date, then the Tranche Closing Date applicable to the Exercise Notice shall be extended by one Trading Day for each Trading Day that timely credit of DWAC Shares is not made. 

1.1.4 Upon automatic exercise of the Warrant, 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. 
 1.1.5 If this Warrant is exercised and the number of Warrant Shares represented by this Warrant is greater than the number of Warrant Shares being acquired upon such exercise, then the Company
shall, as soon as practicable and in no event later than one Trading Day after such exercise, update the Warrant Exercise Schedule to reflect the revised number of Warrant Shares for which this Warrant is then exercisable and deliver a copy of the
updated Warrant Exercise Schedule to the Holder. No fractional shares of Common Stock are to be issued upon the exercise of this Warrant, but rather the number of shares of Common Stock to be issued shall be rounded up to the nearest whole number.
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, other than income-related taxes payable by the Holder. 

1.2 Adjustments to Exercise Price and Number of Shares. In addition to other adjustments specified herein, the Exercise
Price of this Warrant and the number of shares of Common Stock issuable upon exercise shall be adjusted as follows: 

1.2.1 Exercise Price. The “Exercise Price” per share of Common Stock underlying this Warrant,
subject to further adjustment as provided herein, shall be as follows: (i) with respect to the Warrant issued on the Effective Date and until the first Tranche Notice Date, the amount per Warrant Share set forth on the face of this Warrant,
which is equal to Closing Bid Price for the Common Stock on the Trading Day prior to the Effective Date, and (ii) with respect to the portion of this Warrant that becomes exercisable on any Tranche Notice Date (including the first Tranche
Notice Date), an amount per Warrant Share equal to the Closing Bid Price of a share of Common Stock on the Trading Day immediately preceding such Tranche Notice Date. 

  
 3 

 1.2.2 Number of Shares. Subject to the Tranche Limitation, the number
of Warrant Shares underlying this Warrant and each Warrant Tranche, subject to further adjustment as provided herein, shall be as follows: (i) with respect to the portion of this Warrant as issued on the Effective Date and until the first
Tranche Notice Date, the number of shares set forth on the face of this Warrant, which shall be that number of shares of Common Stock equal to the Maximum Placement multiplied by 135%, with the resulting sum divided by the Closing Bid Price of a
share of Common Stock on the Trading Day prior to the Effective Date, and (ii) with respect to the portion of this Warrant that become exercisable on any Tranche Notice Date including the first Tranche Notice Date, a number of shares equal to
the Tranche Purchase Price set forth in the applicable Tranche Notice multiplied by 135%, with the resulting sum divided by the Closing Bid Price of a share of Common Stock on the Tranche Notice Date. For example, if the Tranche Purchase Price is
$1,000,000 and the Closing Bid Price is $0.50, then the number of Warrant Shares underlying that Warrant Tranche shall be $1,000,000 x 135% = $1,350,000 divided by $0.50 = 2,700,000 shares of Common Stock. On each Tranche Notice Date, the number of
Warrant Shares underlying the related Warrant Tranche shall vest and be automatically exercised, and the aggregate number of Warrant Shares underlying this Warrant that are currently exercisable shall automatically adjust up or down to account for
the change in the number of Warrant Shares covered by the new Warrant Tranche and for any Warrant Shares issued upon any prior or simultaneous exercise of this Warrant. If at any time the Holder reasonably believes that the number of Warrant Shares
included in the Registration Statement is not sufficient to cover all exercises under this Warrant, then the Company shall amend such Registration Statement to include the additional number of Warrant Shares that may be required to provide such
coverage. 
 1.3 Cashless Exercise. Notwithstanding anything contained herein to the contrary, if at
any time there is not a current, valid and effective registration statement covering the Warrant Shares that are the subject of the Exercise Notice (the “Unavailable 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   =	 	(B-C) x A
		 	        B

 For purposes of the foregoing formula: 
 A = the total number of shares with
respect to which this Warrant is then being exercised. 

  
 4 

 B = the average of the Closing Bid Prices of the shares of Common Stock (as reported by
Bloomberg) 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. 
 1.4 Company’s Failure to Timely Deliver Securities. If the Company shall fail, for any reason or for no reason to credit to the Holder’s balance account with DTC, by 12:00
p.m. Eastern time on the Trading Day following the Tranche Notice Date, the number of shares of Common Stock to which the Holder is entitled upon automatic exercise of this Warrant, then, in addition to all other remedies available to the Holder,
the Company shall pay in cash to the Holder on each day after such Trading Day that the issuance of such shares of Common Stock is not timely effected an amount equal to 1.5% of the product of (A) the sum of the number of shares of Common Stock
not issued to the Holder on a timely basis and to which the Holder is entitled and (B) the Closing Bid Price of the shares of Common Stock on the Trading Day immediately preceding the last possible date which the Company could have issued such
shares of Common Stock to the Holder without violating Section 1.1. In addition to the foregoing, if after the Company’s issuance of a Tranche Notice the Company shall fail to timely (pursuant to Section 1.1.3 hereof)
credit the Holder’s balance account with DTC for the number of shares of Common Stock to which the Holder is entitled upon the automatic exercise of the applicable portion of this Warrant, and 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 one Trading Day
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 credit such Holder’s balance account with DTC for the number of Warrant Shares to which the Holder is entitled upon the Holder’s exercise
hereunder and to issue such Warrant Shares shall terminate, or (ii) promptly honor its obligation to credit such Holder’s balance account with DTC for the number of Warrant Shares to which the Holder is entitled upon the Holder’s
exercise hereunder 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 sold by Holder in satisfaction of its obligations, times (B) the
Closing Bid Price on the date of exercise. 
 1.5 Exercise Limitation. Notwithstanding any other provision,
at no time may the Company deliver a Tranche Notice if such delivery would trigger either: (a) exercise of this Warrant such that the number of Warrant Shares to be received pursuant to such exercise exceeds 135.0% of the aggregate of all
Tranche Purchase Prices under and in connection with all Tranche Notices delivered pursuant to the Purchase Agreement prior to the date of exercise; or (b) exercise of this Warrant such that the number of Warrant Shares to be received pursuant
to such exercise, aggregated with all other shares of Common Stock or other voting securities of the Company then owned or deemed beneficially owned by the Holder and its affiliates, would result

  
 5 

 
in the Holder and its affiliates owning or being deemed to beneficially own more than 9.99% of the Common Stock or other voting securities of the Company as would be outstanding on the date of
exercise, with such ownership percentage determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder (the “Holder Ownership Limit”). In addition, as of any date, the
aggregate number of shares of Common Stock into which this Warrant is exercisable within 61 days, together with all other shares of Common Stock or other voting securities of the Company then owned or deemed beneficially owned by Holder and its
affiliates, shall not exceed the Holder Ownership Limit. 
 1.6 Activity Restrictions. For so long as
Holder or any of its affiliates holds this Warrant or any Warrant Shares, neither Holder nor any affiliate will: (i) vote any shares of Common Stock owned or controlled by it, solicit any proxies, or seek to advise or influence any Person with
respect to any voting securities of the Company; (ii) engage or participate in any actions, plans or proposals which relate to or would result in (a) acquiring additional securities of the Company, alone or together with any other Person,
which would result in Holder and/or its affiliates exceeding the Holder Ownership Limit, (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving Company or any of its subsidiaries, (c) a sale
or transfer of a material amount of assets of the Company or any of its subsidiaries, (d) any change in the present board of directors or management of the Company, including any plans or proposals to change the number or term of directors or
to fill any existing vacancies on the board, (e) any material change in the present capitalization or dividend policy of the Company, (f) any other material change in the Company’s business or corporate structure, including but not
limited to, if the Company is a registered closed-end investment company, any plans or proposals to make any changes in its investment policy for which a vote is required by Section 13 of the Investment Company Act of 1940, (g) changes in
the Company’s charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Company by any Person, (h) causing a class of securities of the Company to be delisted from a national
securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association, (i) a class of equity securities of the Company becoming eligible for termination of registration
pursuant to Section 12(g)(4) of the Act, or (j) any action, intention, plan or arrangement similar to any of those enumerated above; or (iii) request the Company or its directors, officers, employees, agents or representatives to
amend or waive any provision of this Section 1.6. 
 1.7 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 and resolve such dispute in accordance with Section
12. 
 1.8 Insufficient Authorized Shares. If at any time while any portion of this Warrant remains
outstanding the Company does not have a sufficient number of authorized and unreserved shares of Common Stock to satisfy its obligation to reserve for issuance upon exercise of this Warrant at least a number of shares of Common Stock equal to 110%
of the number of shares of Common Stock as shall from time to time be necessary to effect the exercise 

  
 6 

 
of the portion of the Warrant then outstanding (the “Required Reserve Amount”) (an “Authorized Share Failure”), then the Company shall immediately take all
action necessary to increase the Company’s authorized shares of Common Stock to an amount sufficient to allow the Company to reserve the Required Reserve Amount for the portion of the Warrant then outstanding. Without limiting the generality of
the foregoing sentence, as soon as practicable after the date of the occurrence of an Authorized Share Failure, but in no event later than 90 days after the occurrence of such Authorized Share Failure, the Company shall hold a meeting of its
stockholders for the approval of an increase in the number of authorized shares of Common Stock. In connection with such meeting, the Company shall provide each stockholder with a proxy statement and shall use its best efforts to solicit its
stockholders’ approval of such increase in authorized shares of Common Stock and to cause its board of directors to recommend to the stockholders that they approve such proposal. 

ARTICLE 2 
 ADJUSTMENT UPON SUBDIVISION OR COMBINATION OF COMMON STOCK 
 If the
Company at any time on or after the Issuance Date subdivides (by any stock split, stock dividend, recapitalization or otherwise) one or more classes of its outstanding shares of Common Stock into a greater number of shares, the Exercise Price in
effect immediately prior to such subdivision will be proportionately reduced and the number of Warrant Shares will be proportionately increased. If the Company at any time on or after the Issuance Date combines (by combination, reverse stock split
or otherwise) one or more classes of its outstanding shares of Common Stock into a smaller number of shares, the Exercise Price in effect immediately prior to such combination will be proportionately increased and the number of Warrant Shares will
be proportionately decreased. Any adjustment under this ARTICLE 2 shall become effective at the close of business on the date the subdivision or combination becomes effective. 
 ARTICLE 3  
 PURCHASE RIGHTS; FUNDAMENTAL TRANSACTIONS

 3.1 Purchase Rights. In addition to any adjustments pursuant to ARTICLE 2 above, if at any time the
Company grants, issues or sells any Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the record holders of any class of shares of Common Stock (the “Purchase Rights”),
then the Holder will be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have acquired if the Holder had held the number of shares of Common Stock acquirable upon complete
exercise of this Warrant (without regard to any limitations on the exercise of this Warrant) immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, 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 grant, issue or sale of such Purchase Rights. 
 3.2 Subsequent Equity Sales. In addition to any adjustments made pursuant to ARTICLE 2 above, if the Company or any Subsidiary thereof, as applicable, at any time subsequent to the
first Tranche Closing Date while this Warrant is outstanding, shall sell or grant 

  
 7 

 
any option to purchase, or sell or grant any right to reprice, or otherwise dispose of or issue (or announce any offer, sale, grant or any option to purchase or other disposition) any Common
Stock or Common Stock Equivalents entitling any Person other than the Holder to acquire shares of Common Stock, at an effective price per share less than the then Exercise Price (such lower price, the “Base Share Price” and such
issuances, collectively, a “Dilutive Issuance”), then the Exercise Price shall be reduced and only reduced to equal the Base Share Price and the number of Warrant Shares issuable hereunder shall be increased such that the aggregate
Exercise Price payable hereunder, after taking into account the decrease in the Exercise Price, shall be equal to the aggregate Exercise Price prior to such adjustment. Except as otherwise provided herein, such adjustment shall be made whenever such
Common Stock or Common Stock Equivalents are issued. If the holder of the Common Stock or Common Stock Equivalents so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or
exchange prices or otherwise, or due to warrants, options or rights per share which are issued in connection with such issuance, be entitled to receive shares of Common Stock at an effective price per share which is less than the Exercise Price,
such issuance shall be deemed to have occurred for less than the Exercise Price on such date of the Dilutive Issuance, provided, however, that such date of the Dilutive Issuance is after the first Tranche Closing Date. Notwithstanding
the foregoing, no adjustments shall be made, paid or issued under this Section 3.2 in respect of an Exempt Issuance, subject to adjustment for reverse and forward stock splits, stock dividends, stock combinations and other similar
transactions of the Common Stock, or securities issued under employee benefit plans, that occur after the date of the Purchase Agreement. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any
Common Stock or Common Stock Equivalents subject to this Section 3.2, indicating therein the applicable issuance price, or applicable reset price, exchange price, conversion price and other pricing terms (such notice the
“Dilutive Issuance Notice”). For purposes of clarification, whether or not the Company provides a Dilutive Issuance Notice pursuant to this Section 3.2, upon the occurrence of any Dilutive Issuance, after the date of
such Dilutive Issuance the Holder is entitled to receive a number of Warrant Shares based upon the Base Share Price regardless of whether the Holder accurately refers to the Base Share Price in the Notice of Exercise. 

3.3 Fundamental Transactions. The Company shall not enter into or be party to a Fundamental Transaction
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 3.3 pursuant to written agreements in form and substance satisfactory to the
Required Holders and approved by the Required Holders prior to such Fundamental Transaction, including agreements to deliver to each Holder of this Warrant in exchange for such Warrant a security of the Successor Entity evidenced by a written
instrument substantially similar in form and substance to this Warrant, including, without limitation, an adjusted exercise price equal to the value for the shares of Common Stock reflected by the terms of such Fundamental Transaction, and
exercisable for a corresponding number of shares of capital stock equivalent to the 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
Fundamental Transaction, and satisfactory to the Required Holders. Upon the occurrence of any Fundamental Transaction, the Successor Entity shall 

  
 8 

 
succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction, 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. Upon
consummation of the Fundamental Transaction, the Successor Entity shall deliver to the Holder confirmation that there shall be issued upon exercise of this Warrant at any time after the consummation of the Fundamental Transaction, in lieu of the
shares of the Common Stock (or other securities, cash, assets or other property) purchasable upon the exercise of this Warrant prior to such Fundamental Transaction, such shares of stock, securities, cash, assets or any other property whatsoever
(including warrants or other purchase or subscription rights) which the Holder would have been entitled to receive upon the happening of such Fundamental Transaction had this Warrant been converted immediately prior to such Fundamental Transaction,
as adjusted in accordance with the provisions of this Warrant. In addition to and not in substitution for any other rights hereunder, prior to the consummation of any Fundamental Transaction pursuant to which holders of shares of Common Stock are
entitled to receive securities or other assets with respect to or in exchange for shares of Common Stock (a “Corporate Event”), the Company shall make appropriate provision to insure that the Holder will thereafter have the right to
receive upon an exercise of this Warrant at any time after the consummation of the Fundamental Transaction, in lieu of the shares of the Common Stock (or other securities, cash, assets or other property) purchasable upon the exercise of this Warrant
prior to such Fundamental Transaction, such shares of stock, securities, cash, assets or any other property whatsoever (including warrants or other purchase or subscription rights) which the Holder would have been entitled to receive upon the
happening of such Fundamental Transaction had this Warrant been exercised immediately prior to such Fundamental Transaction; provided, however, that in the event the Fundamental Transaction involves the issuance of cash or freely
tradable securities by an issuer listed on the New York Stock Exchange or the Nasdaq Stock Market, then the ability to exercise this Warrant shall expire on the consummation of that Fundamental Transaction. Provision made pursuant to the preceding
sentence shall be in a form and substance reasonably satisfactory to the Required Holders. The provisions of this Section 3.3 shall apply similarly and equally to successive Fundamental Transactions and Corporate Events and shall be
applied without regard to any limitations on the exercise of this Warrant. 
 3.4 Notwithstanding the foregoing
Section 3.3, in the event of a Fundamental Transaction (other than one in which the Successor Entity is (i) The Quercus Trust or an Affiliate thereof, or (ii) a Public Successor Entity that assumes this Warrant such that this
Warrant shall be exercisable for the publicly traded common stock of such Public Successor Entity), at the request of the Holder delivered before the 90th day after the effective date of such Fundamental Transaction, the Company (or the Successor
Entity) shall purchase this Warrant from the Holder by paying to the Holder, within five (5) Trading Days after such request (or, if later, on the effective date of the Fundamental Transaction), cash in an amount equal to the value of the
remaining unexercised portion of this Warrant on the date of such consummation, which value shall be determined by use of the Black Scholes Option Pricing Model using a volatility equal to the 100 day average historical price volatility prior to the
date of the public announcement of such Fundamental Transaction. 

  
 9 

 ARTICLE 4 
 NONCIRCUMVENTION 
 The Company hereby covenants and agrees that the
Company will not, by amendment of its certificate or articles of incorporation, articles of association, bylaws, or any other organization documents, or through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement,
dissolution, issue or sale of securities, or any other voluntary action, 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. 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 any portion of this Warrant remains 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, 110% of the number of shares of Common Stock as shall from time to time be necessary to effect the exercise of this Warrant then outstanding (without regard to any limitations on exercise). 

ARTICLE 5 
 WARRANT HOLDER NOT DEEMED A STOCKHOLDER 
 Except as otherwise
specifically provided herein, 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 liabilities on the Holder to purchase any
securities (upon exercise of this Warrant or otherwise) or as a stockholder of the Company, whether such liabilities are asserted by the Company or by creditors of the Company. Notwithstanding this ARTICLE 5, the Company shall provide the Holder
with copies of the same notices and other information given to the stockholders of the Company generally, contemporaneously with the giving thereof to the stockholders. 

  
 10 

 ARTICLE 6  

REISSUANCE OF WARRANTS 
 6.1 Transfer of Warrant. If this Warrant is to be transferred, the Holder shall surrender this Warrant to the Company, whereupon the Company will forthwith issue and deliver
upon the order of the Holder a new Warrant (in accordance with Section 6.4), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by the Holder and, if less then the
total number of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 6.4) to the Holder representing the right to purchase the number of Warrant Shares not being transferred.

 6.2 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 6.4) representing the right to purchase the Warrant Shares then underlying this
Warrant. 
 6.3 Exchangeable for Multiple Warrant. This Warrant is exchangeable, upon the surrender
hereof by the Holder at the principal office of the Company, for a new Warrant or Warrants (in accordance with Section 6.4) 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 Warrant for fractional shares of Common Stock shall be given.

 6.4 Issuance of New Warrant. 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 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 or Section 6.3, the Warrant Shares designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrant 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. 
 ARTICLE 7 

NOTICES 
 Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance with Section 6.2 of the Purchase Agreement. 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 

  
 11 

 
therefore. Without limiting the generality of the foregoing, the Company will give written notice to the Holder (i) immediately upon any adjustment of the Exercise Price, setting forth in
reasonable detail, and certifying, the calculation of such adjustment and (ii) at least fifteen 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 Options, Convertible Securities or rights to purchase stock, warrants, securities or other property to holders of shares of Common Stock as such 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. 
 ARTICLE 8 
 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 Required Holders;
provided that except as set forth in this Warrant no such action may increase the exercise price of any Warrant or decrease the number of shares or class of stock obtainable upon exercise of any Warrant without the written consent of the
Holder. No such amendment shall be effective to the extent that it applies to less than all of the holders of this Warrant. 

ARTICLE 9 
 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. 

ARTICLE 10 
 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.

 ARTICLE 11 
 DISPUTE RESOLUTION 
 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 submit the disputed determinations or 

  
 12 

 
arithmetic calculations via facsimile within 2 Trading Days of receipt of the Exercise Notice giving rise to such dispute, as the case may be, to the Holder. If the Holder and the Company are
unable to agree upon such determination or calculation of the Exercise Price or the Warrant Shares within three Trading Days of such disputed determination or arithmetic calculation being submitted to the Holder, then the Company shall, within 2
Trading Days submit via facsimile (a) the disputed determination of the Exercise Price or arithmetic calculation to an independent, reputable investment bank or independent registered public accounting firm selected by Holder subject to
Company’s approval, which may not be unreasonably withheld or delayed, or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent registered public accounting firm. The Company shall cause at its
expense the investment bank or the accountant, as the case may be, to perform the determinations or calculations and notify the Company and the Holder of the results no later than 3 Trading Days from the time it receives the disputed determinations
or calculations. Such investment bank’s or accountant’s determination or calculation, as the case may be, shall be binding upon all parties absent demonstrable error. 
 ARTICLE 12 
 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 right 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. 
 ARTICLE 13 

DEFINITIONS 
 For purposes of this Warrant, in addition to the terms defined elsewhere herein, the following terms shall have the following meanings: 

13.1 “Bloomberg” means Bloomberg Financial Markets. 

13.2 “Closing Bid Price” means, for any security as of any date, the last closing bid price for such security on
the Trading Market, as reported by Bloomberg, or, if the Trading Market begins to operate on an extended hours basis and does not designate the closing bid price, then the last bid price of such security prior to 4:00 p.m., Eastern time, as reported
by Bloomberg, or, if the Trading Market is not the principal securities exchange or trading market for such security, the last closing bid price 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 of such security in the over-the-counter market 

  
 13 

 
on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price is reported for such security by Bloomberg, the average of the bid prices 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 cannot be calculated for a security on a particular date on any of the foregoing bases,
the Closing Bid Price of such security on such date shall be the fair market value as mutually determined by the Company and Holder. If the Company and Holder are unable to agree upon the fair market value of such security, then such dispute shall
be resolved pursuant to ARTICLE 11. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during the applicable calculation period. 

13.3 “Common Stock” means (i) the Company’s shares of Common Stock, par value $0.001 per share, and
(ii) any share capital into which such Common Stock shall have been changed or any share capital resulting from a reclassification of such Common Stock. 
 13.4 “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
deemed to be outstanding pursuant to Section 3.1 hereof regardless of whether the Options or Convertible Securities are actually exercisable at such time, but excluding any shares of Common Stock owned or held by or for the account of
the Company or issuable upon exercise of this Warrant. 
 13.5 “Common Stock Equivalents” means any
securities of the Company or the Subsidiaries which would entitle the holder thereof to acquire at any time Common Stock, including, without limitation, any debt, preferred stock, rights, options, warrants or other instrument that is at any time
convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock. 

13.6 “Convertible Securities” means any stock or securities (other than Options) directly or indirectly
convertible into or exercisable or exchangeable for shares of Common Stock. 
 13.7 “DWAC Shares” means
all Warrant Shares issued or issuable to Holder or any Affiliate, successor or assign of Holder pursuant to this Warrant, all of which shall be (a) issued in electronic form, (b) freely tradable and without restriction on resale, and
(c) timely credited by Company to the specified Deposit/Withdrawal at Custodian (DWAC) account with DTC under its Fast Automated Securities Transfer (FAST) Program or any similar program hereafter adopted by DTC performing substantially the
same function, in accordance with instructions issued to and countersigned by the Transfer Agent of the Company. 
 13.8
“Eligible Market” means the Trading Market, The New York Stock Exchange, Inc., The NASDAQ Global Select Market, The NASDAQ Global Market, The NASDAQ Capital Market, the NYSE Amex or the OTC Bulletin Board, but does not include the
Pink Sheets. 

  
 14 

 13.9 “Exempt Issuance” means the issuance of (a) shares of
Common Stock or options to employees, officers, or directors of the Company pursuant to any stock or option plan duly adopted for such purpose, by a majority of the non-employee members of the Board of Directors or a majority of the members of a
committee of non-employee directors established for such purpose, (b) securities upon the exercise or exchange of or conversion of any Securities issued hereunder and/or other securities exercisable or exchangeable for or convertible into
shares of Common Stock issued and outstanding on the date of this Agreement, provided that such securities have not been amended since the date of this Agreement to increase the number of such securities or to decrease the exercise price, exchange
price or conversion price of such securities (except as a result of anti-dilution provisions therein), (c) securities issued pursuant to acquisitions or strategic transactions approved by a majority of the disinterested directors of the
Company, provided that any such issuance shall only be to a Person (or to the equity holders of a Person) which is, itself or through its subsidiaries, an operating company or an asset in a business synergistic with the business of the Company and
shall provide to the Company additional benefits in addition to the investment of funds, but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to an entity whose primary
business is investing in securities, and (d) up to $3,500,000 in Common Stock that may be issued to The Quercus Trust and/or its Affiliates and/or any other holders of Common Stock of the Company. 

13.10 “Fundamental Transaction” has the meaning set forth in the Purchase Agreement. 

13.11 “Maximum Placement” has the meaning set forth in the Purchase Agreement. 

13.12 “Options” means any rights, warrants or options to subscribe for or purchase shares of Common Stock or
Convertible Securities. 
 13.13 “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. 
 13.14
“Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity and a government or any department or agency thereof. 

13.15 “Public Successor Entity” means a Successor Entity that is a publicly traded corporation whose stock is
quoted or listed for trading on an Eligible Market. 
 13.16 “Required Holders” means the Holders of
this Warrant representing at least a majority of shares of Common Stock underlying this Warrant as then outstanding. 

13.17 “Successor Entity” means the Person (or, if so elected by the Required Holders, the Parent Entity) formed
by, resulting from or surviving any Fundamental Transaction or the Person (or, if so elected by the Required Holders, the Parent Entity) with which such Fundamental Transaction shall have been entered into. 

  
 15 

 13.18 “Trading Day” means any day on which the Common Stock is
traded on an Eligible Market; provided that it shall not include any day on which the Common Stock (a) is suspended from trading, or (b) is scheduled to trade on such exchange or market for less than 5 hours. 

13.19 “Trading Market” means the OTC Bulletin Board, the NASDAQ Capital Market, the NASDAQ Global Market, the
NASDAQ Global Select Market, the NYSE Amex, or the New York Stock Exchange, whichever is at the time the principal trading exchange or market for the Common Stock, but does not include the Pink Sheets inter-dealer electronic quotation and trading
system. 
 13.20 “Tranche Closing Date” has the meaning set forth in the Purchase Agreement. 

13.21 “Tranche Notice” has the meaning set forth in the Purchase Agreement. 

13.22 “Tranche Notice Date” has the meaning set forth in the Purchase Agreement. 

13.23 “Tranche Purchase Price” has the meaning set forth in the Purchase Agreement. 

  
 16 

 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. 
  

			
	ENTECH SOLAR, INC.
		
	By:	 	
 

			
	Name:	 	
	Title:	 	

 Acknowledged and agreed: 

 

			
	SOCIUS CG II, LTD.
		
	By:	 	  

			
	 Name:
	 	Terren Peizer
	 Title:
	 	Managing Director

 Warrant Exercise Schedule 

 

																	
	 Exercise Date
	  	Number of
Warrant Shares	 	  	Exercise Price
Per Share	 	  	Aggregate Exercise
Price	 	  	Dollar Amount
Remaining	 
		  				  				  				  			

 APPENDIX 1 
 EXERCISE NOTICE 
 ENTECH SOLAR, INC. 

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

 

			
	___	  	Cash Exercise with respect to              Warrant Shares
		
	___	  	Cashless Exercise with respect to              Warrant Shares
		
	___	  	Recourse Note Exercise with respect to              Warrant Shares

Please issue 
  

			
	___	  	A certificate or certificates representing said shares of Common Stock in the name specified below and send certificate by overnight courier to the following
address:
		
		  	Name/Address:
		
	___	  	Said shares in electronic form to the Deposit/Withdrawal at Custodian (DWAC) account with Depository Trust Company (DTC) specified below.
		
		  	Account Information:

  

	
	     SOCIUS CG II, LTD.

	Holder Name

  

			
	By:	 	  

			
	Name:	 	  

			
	Title:	 	  

 ACKNOWLEDGMENT 
 The Company hereby acknowledges the foregoing Exercise Notice and hereby directs Computershare to issue the above indicated number of shares of Common Stock as specified above, in accordance with the
Transfer Agent Instructions dated [            ] from the Company, and acknowledged and agreed to by the transfer agent. 

 

			
	ENTECH SOLAR, INC.
		
	By:	 	
 

			
	Name:	 	
 

			
	Title:	 	  

 APPENDIX 2 
 FORM OF NOTE 

 SECURED PROMISSORY NOTE 

 

			
	$[            ]	  	Date: [            ], 20[    ]

FOR VALUE RECEIVED, Socius CG II, Ltd. (“Borrower”) promises to pay to the order of Entech Solar, Inc.
(“Lender”), at 13301 Park Vista Boulevard, Suite 100, Fort Worth, Texas 76177, or at such other place as Lender may from time to time designate in writing, the principal sum of set forth above, with interest, as follows: 

1. Interest. The principal balance outstanding from time to time under this Secured Promissory Note (this
“Note”), shall bear interest from and after the date hereof at the rate of 2.0% per year. Interest shall be calculated on a simple interest basis and the number of days elapsed during the period for which interest is being
calculated. Payments of interest will be due on each annual anniversary of the date of this Note; provided that Borrower will not be in default hereunder for failure to make any annual interest payment when due (other than on the Maturity
Date) and the amount of interest not paid when due shall be added to the principal balance of this Note and such amount will thereafter accrue interest at the rate set forth above. 

2. Payments. If not sooner paid, the entire unpaid principal balance, interest thereon and any other charges due and payable under
this Note shall be due and payable on the fourth anniversary of the date of this Note (“Maturity Date”); provided, however, that no payments on this Note will be due or payable so long as either (a) Lender is in
default under any preferred stock purchase agreement for Series G Preferred Stock with Borrower or any Warrant issued pursuant thereto, any loan agreement or other material agreement entered into with Borrower, or (b) there are any shares of
Series G Preferred Stock of Lender issued or outstanding (each, a “Non-Payment Event”). Upon the termination or cure of any Non-Payment Event, Borrower’s obligation to pay amounts outstanding on this Note will immediately be
reinstated. Borrower shall have the right to prepay all or any part of the principal balance of this Note at any time without penalty or premium. Notwithstanding the foregoing, in the event that Lender redeems all or a portion of any shares of
Series G Preferred Stock then held by Borrower, the proceeds of any such redemption will be applied by Borrower to pay down the accrued interest and outstanding principal of this Note and Lender will be permitted to offset the full amount of such
proceeds against amounts outstanding under this Note. All payments on this Note shall be first applied to interest, then to reduce the outstanding principal balance hereof. 
 3. Full Recourse Note. THIS IS A FULL RECOURSE PROMISSORY NOTE. Accordingly, notwithstanding that Borrower’s obligations under this Note are secured by the Collateral, in the event of a
material default hereunder, Lender shall have full recourse to all the other assets of Borrower. Moreover, Lender shall not be required to proceed against or exhaust any Collateral, or to pursue any Collateral in any particular order, before Lender
pursues any other remedies against Borrower or against any of Borrower’s assets. 
 4. Security 

a. Pledge. As security for the due and prompt payment and performance of all payment obligations under this Note and any
modifications, replacements and extensions 

  
 1 

 
hereof (collectively, “Secured Obligations”), Borrower hereby pledges and grants a security interest to Lender in all of Borrower’s right, title, and interest in and to all
of the following, now owned or hereafter acquired or arising (together the “Collateral”): 
 i. Freely
tradable shares of common stock, shares of preferred stock, bonds, notes and/or debentures (collectively, “Pledged Securities”) with a collective fair market value on the date hereof at least equal to the principal amount of this
Note, based upon the trading price of such securities on the OTC Bulletin Board, NASDAQ Capital Market, NASDAQ Global Market, NASDAQ Global Select Market, NYSE Amex, or New York Stock Exchange; 

ii. all rights of Borrower with respect to or arising out of the Pledged Securities, including voting rights, and all equity and debt
securities and other property distributed or distributable with respect thereto as a result of merger, consolidation, dissolution, reorganization, recapitalization, stock split, stock dividend, reclassification, exchange, redemption, or other change
in capital structure; and 
 iii. all proceeds, replacements, substitutions, accessions and increases in any of the Collateral.

 b. Replacement Securities. So long as any Secured Obligations remain outstanding, in the event that Borrower sells or
disposes of any Pledged Securities, Borrower shall promptly provide replacement securities of equal or greater value than such Pledged Securities. 
 c. Rights With Respect to Distributions. So long as no default shall have occurred and be continuing under this Note, Borrower shall be entitled to receive any and all dividends and distributions
made with respect to the Pledged Securities and any other Collateral. However, upon the occurrence and during the continuance of any default, Lender shall have the sole right (unless otherwise agreed by Lender) to receive and retain dividends and
distributions and apply them to the outstanding balance of this Note or hold them as Collateral, at Lender’s election. 

d. Voting Rights. So long as no default shall have occurred and be continuing under this Note, Borrower shall be entitled to
exercise all voting rights pertaining to the Pledged Securities and any other Collateral. However, upon the occurrence and during the continuance of any default, all rights of Borrower to exercise the voting rights that Borrower would otherwise be
entitled to exercise with respect to the Collateral shall cease and (unless otherwise agreed by Lender) all such rights shall thereupon become vested in Lender, which shall thereupon have the sole right to exercise such rights. 

e. Financing Statement; Further Assurances. Borrower agrees, concurrently with executing this Note, that Lender may file a UCC-1
financing statement relating to the Collateral in favor of Lender, and any similar financing statements in any jurisdiction in which Lender reasonably determines such filing to be necessary. Borrower further agrees that at any time and from time to
time Borrower shall promptly execute and deliver all further instruments and documents that Lender may request in order to perfect and protect the security interest 

  
 2 

 
granted hereby, or to enable Lender to exercise and enforce its rights and remedies with respect to any Collateral following an event of default. In addition, following an event of default,
Borrower shall deliver the Collateral, including original certificates or other instruments representing the Pledged Securities, to Lender to hold as secured party, and Borrower shall, if requested by Lender, execute a securities account control
agreement. 
 f. Powers of Lender. Borrower hereby appoints Lender as Borrower’s true and lawful attorney-in-fact to
perform any and all of the following acts, which power is coupled with an interest, is irrevocable until the Secured Obligations are paid and performed in full, and may be exercised from time to time by Lender in its discretion: To take any action
and to execute any instrument which Lender may deem reasonably necessary or desirable to accomplish the purposes of this Section 4(f) and, more broadly, this Note including, without limitation: (i) to exercise voting and consent
rights with respect to Collateral in accordance with this Note, (ii) during the continuance of any default hereunder, to receive, endorse and collect all instruments or other forms of payment made payable to Borrower representing any dividend,
interest payment or other distribution in respect of the Collateral or any part thereof and to give full discharge for the same, when and to the extent permitted by this Note, (iii) to perform or cause the performance of any obligation of
Borrower hereunder in Borrower’s name or otherwise, (iv) during the continuance of any default hereunder, to liquidate any Collateral pledged to Lender hereunder and to apply proceeds thereof to the payment of the Secured Obligations or to
place such proceeds into a cash collateral account or to transfer the Collateral into the name of Lender, all at Lender’s sole discretion, (v) to enter into any extension, reorganization or other agreement relating to or affecting the
Collateral, and, in connection therewith, to deposit or surrender control of the Collateral, (vi) to accept other property in exchange for the Collateral, (vii) to make any compromise or settlement Lender deems desirable or proper, and
(viii) to execute on Borrower’s behalf and in Borrower’s name any documents required in order to give Lender a continuing first lien upon the Collateral or any part thereof. 

5. Additional Terms 
 a. No Waiver. The acceptance by Lender of payment of a portion of any installment when due or an entire installment but after it is due shall neither cure nor excuse the default caused by the
failure of Borrower timely to pay the whole of such installment and shall not constitute a waiver of Lender’s right to require full payment when due of any future or succeeding installments. 

b. Default. Any one or more of the following shall constitute a “default” under this Note: (i) a default in the
payment when due of any amount hereunder, (ii) Borrower’s refusal to perform any material term, provision or covenant under this Note, (iii) the commencement of any liquidation, receivership, bankruptcy, assignment for the benefit of
creditors or other debtor-relief proceeding by or against Borrower, (iv) the transfer by Borrower of any Pledged Securities without being replaced by Pledged Securities in accordance with Section 4(b), and (iv) the levying of
any attachment, execution or other process against Borrower, the Collateral or any material portion thereof. 

  
 3 

 c. Default Rights 

i. Upon the occurrence of any payment default Lender may, at its election, declare the entire balance of principal and interest under
this Note immediately due and payable. A delay by Lender in exercising any right of acceleration after a default shall not constitute a waiver of the default or the right of acceleration or any other right or remedy for such default. The failure by
Lender to exercise any right of acceleration as a result of a default shall not constitute a waiver of the right of acceleration or any other right or remedy with respect to any other default, whenever occurring. 

ii. Further, upon the occurrence of any material non-monetary default, following 30 days notice from Lender to Borrower specifying the
default and demanded manner of cure for such non-monetary default, Lender shall thereupon and thereafter have any and all of the rights and remedies to which a secured party is entitled after a default under the applicable Uniform Commercial Code,
as then in effect. In addition to Lender’s other rights and remedies, Borrower agrees that, upon the occurrence of default, Lender may in its sole discretion do or cause to be done any one or more of the following: 

(a) Proceed to realize upon the Collateral or any portion thereof as provided by law, and without liability for any diminution in price
which may have occurred, sell the Collateral or any part thereof, in such manner, whether at any public or private sale, and whether in one lot as an entirety, or in separate portions, and for such price and other terms and conditions as is
commercially reasonable given the nature of the Collateral. 
 (b) If notice to Borrower is required, give written notice to
Borrower at least ten days before the date of sale of the Collateral or any portion thereof. 
 (c) Transfer all or any part of
the Collateral into Lender’s name or in the name of its nominee or nominees. 
 (d) Vote all or any part of the Collateral
(whether or not transferred into the name of Lender ) and give all consents, waivers and ratifications in respect of the Collateral and otherwise act with respect thereto, as though Lender were the outright owner thereof. 

iii. Borrower acknowledges that all or part of foreclosure of the Collateral may be restricted by state or federal securities laws,
Lender may be unable to effect a public sale of all or part of the Collateral, that a public sale is or may be impractical and inappropriate and that, in the event of such restrictions, Lender thus may be compelled to resort to one or more private
sales to a restricted group of purchasers who will be obliged to agree, among other things, to acquire the Collateral for their own account, for investment and not with a view to its distribution or resale. Borrower agrees that if reasonably
necessary Lender may resort to one or more sales to a single purchaser or a restricted or limited group of purchasers. Lender shall not be obligated to make any sale or other disposition, unless the terms thereof shall be satisfactory to it.

 iv. If, in the opinion of Lender based upon written advice of counsel, any consent, approval or authorization of any
federal, state or other governmental agency or 

  
 4 

 
authority should be necessary to effectuate any sale or other disposition of any Collateral, Borrower shall execute all such applications and other instruments as may reasonably be required in
connection with securing any such consent, approval or authorization, and will otherwise use its commercially reasonable best efforts to secure the same. 
 v. The rights, privileges, powers and remedies of Lender shall be cumulative, and no single or partial exercise of any of them shall preclude the further or other exercise of any of them. Any waiver,
permit, consent or approval of any kind by Lender of any default hereunder, or any such waiver of any provisions or conditions hereof, must be in writing and shall be effective only to the extent set forth in writing. Any proceeds of any disposition
of the Collateral, or any part thereof, may be applied by Lender to the payment of expenses incurred by Lender in connection with the foregoing, and the balance of such proceeds shall be applied by Lender toward the payment of the Secured
Obligations. 
 d. No Oral Waivers or Modifications. No provision of this Note may be waived or modified orally, but only
in a writing signed by Lender and Borrower. 
 e. Attorney Fees. The prevailing party in any action by Lender to collect
any amounts due under this Note shall be entitled to recover its reasonable attorneys fees and costs. 
 f. Governing
Law. This Note has been executed and delivered in, and is to be construed, enforced, and governed according to the internal laws of, the State of New York without regard to its principles of conflict of laws that would require or permit the
application of the laws of any other jurisdiction. 
 g. Severability. Whenever possible, each provision of this Note
shall be interpreted in such manner as to be effective and valid under applicable law. However, if any provision of this Note shall be held to be prohibited by or invalid under applicable law, it shall be ineffective only to the extent of such
prohibition or invalidity without invalidating the remainder of that provision or the other provisions of this Note. 
 h.
Entire Agreement. This Note contains the entire understanding of the parties with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral or written, with respect to such matters. 

 

			
	SOCIUS CG II, LTD.
		
	By:	 	 
	Name:	 	  

	Title:	 	  

  
 5 

 Exhibit B 
 Certificate of Designations 

 ENTECH SOLAR, INC. 
 CERTIFICATE OF DESIGNATIONS 
 OF PREFERENCES, RIGHTS AND LIMITATIONS 

OF 
 SERIES G
PREFERRED STOCK 
 The undersigned, Sandra J. Martin, hereby certifies that: 

1. She is the Chief Financial Officer of Entech Solar, Inc., a Delaware corporation (the “Corporation”). 

2. The Corporation is authorized to issue 10,000,000 shares of preferred stock, of which 66,667 shares of Series A Preferred Stock,
611,111 shares of Series B Preferred Stock, 750,000 shares of Series C Preferred Stock, 8,000,000 shares of Series D Preferred Stock, 19,700 shares of Series E Preferred Stock, and 20,000 shares of Series F Preferred Stock have been designated and
authorized and of which no shares of Series A Preferred Stock, 611,111 shares of Series B Preferred Stock, no shares of Series C Preferred Stock, 4,892.857 shares of Series D Preferred Stock, no shares of Series E Preferred Stock, and no shares of
Series F Preferred Stock are currently issued and outstanding. 
 3. The following resolutions were duly adopted by the Board of
Directors: 
 WHEREAS, the Certificate of Incorporation of the Corporation provides for a class of its authorized stock known as
preferred stock, comprised of 10,000,000 shares, $0.01 par value per share (the Preferred Stock”), issuable from time to time in one or more series; 
 WHEREAS, the Board of Directors of the Corporation is authorized to fix the dividend rights, dividend rate, voting rights, conversion rights, rights and terms of redemption and liquidation preferences of
any wholly unissued series of Preferred Stock and the number of shares constituting any series and the designation thereof, of any of them; and 
 WHEREAS, it is the desire of the Board of Directors of the Corporation, pursuant to its authority as aforesaid, to fix the rights, preferences, restrictions and other matters relating to a series of
Preferred Stock, which shall consist of up to 1,000 shares of the Preferred Stock which the Corporation has the authority to issue, with face value of $10,000.00 per share, as follows: 

NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors does hereby provide for the issuance of a series of Preferred Stock for cash
or exchange of other securities, rights or property and does hereby fix and determine the rights, preferences, restrictions and other matters relating to such series of Preferred Stock as follows: 

TERMS OF PREFERRED STOCK 
 1. Designation, Amount and Par Value. The series of Preferred Stock shall be designated as the Corporation’s Series G Preferred Stock (the “Series G Preferred Stock”) and the
number of shares so designated shall be 1,000 (which shall not be subject to increase without 

  
 1 

 
any consent of the holders of the Series G Preferred Stock (each a “Holder” and collectively, the “Holders”) that may be required by applicable law. Each share
of Series G Preferred Stock shall have a par value of $0.01 per share. 
 2. Ranking and Voting. 

a. Ranking. The Series G Preferred Stock shall, with respect to dividend rights and rights upon liquidation, winding-up or
dissolution, rank: (i) senior to the Corporation’s common stock, par value $0.001 per share (“Common Stock”), and any other class or series of preferred stock of the Corporation except as set forth in clause
(ii) below (collectively, together with any warrants, rights, calls or options exercisable for or convertible into such Preferred Stock, the “Junior Securities”); and (ii) junior to the Series D Preferred Stock and all
existing and future indebtedness of the Corporation. 
 b. Voting. Except as required by applicable law or as set forth
herein, the holders of shares of Series G Preferred Stock will have no right to vote on any matters, questions or proceedings of this Corporation including, without limitation, the election of directors. 

3. Dividends and Other Distributions. Commencing on the date of the issuance of any such shares of Series G Preferred Stock (each
respectively an “Issuance Date”), Holders of Series G Preferred Stock shall be entitled to receive annual dividends on each outstanding share of Series G Preferred Stock (“Dividends”), which shall accrue in shares
of Series G Preferred Stock at a rate equal to 10.0% per annum from the Issuance Date. Accrued Dividends shall be payable upon redemption of the Series G Preferred Stock in accordance with Section 6. 

a. Any calculation of the amount of such Dividends payable pursuant to the provisions of this Section 3 shall be made based
on a 365-day year and on the number of days actually elapsed during the applicable period, compounded annually. 
 b. So long as
any shares of Series G Preferred Stock are outstanding, no dividends or other distributions will be paid, declared or set apart with respect to any Junior Securities. The Common Stock shall not be redeemed while the Series G Preferred Stock is
outstanding. 
 4. Protective Provision. So long as any shares of Series G Preferred Stock are outstanding, the
Corporation shall not, without the affirmative approval of the Holders of a majority of the shares of the Series G Preferred Stock then outstanding (voting as a class), (a) alter or change adversely the powers, preferences or rights given to
the Series G Preferred Stock or alter or amend this Certificate of Designations, (b) authorize or create any class of stock ranking as to distribution of assets upon a liquidation senior to or otherwise pari passu with the Series G Preferred
Stock, (c) amend its certificate or articles of incorporation, articles of association, or other charter documents in breach of any of the provisions of this Certificate of Designations, (d) increase the authorized number of shares of
Series G Preferred Stock, (e) liquidate, dissolve or wind-up the business and affairs of the Corporation, or effect any Deemed Liquidation Event (as defined below), or (f) enter into any agreement with respect to the foregoing. 

  
 2 

 a. A “Deemed Liquidation Event” shall mean: (i) a merger or
consolidation in which the Corporation is a constituent party or a subsidiary of the Corporation is a constituent party and the Corporation issues shares of its capital stock pursuant to such merger or consolidation, except any such merger or
consolidation involving the Corporation or a subsidiary in which the shares of capital stock of the Corporation outstanding immediately prior to such merger or consolidation continue to represent, or are converted into or exchanged for shares of
capital stock that represent, immediately following such merger or consolidation, at least a majority, by voting power, of the capital stock of the surviving or resulting corporation or if the surviving or resulting corporation is a wholly owned
subsidiary of another corporation immediately following such merger or consolidation, the parent corporation of such surviving or resulting corporation; or (ii) the sale, lease, transfer, exclusive license or other disposition, in a single
transaction or series of related transactions, by the Corporation or any subsidiary of the Corporation of all or substantially all the assets of the Corporation and its subsidiaries taken as a whole, or the sale or disposition (whether by merger or
otherwise) of one or more subsidiaries of the Corporation if substantially all of the assets of the Corporation and its subsidiaries taken as a whole are held by such subsidiary or subsidiaries, except where such sale, lease, transfer, exclusive
license or other disposition is to a wholly owned subsidiary of the Corporation. 
 b. The Corporation shall not have the power
to effect a Deemed Liquidation Event referred to in Section 4(a) unless the agreement or plan of merger or consolidation for such transaction provides that the consideration payable to the stockholders of the Corporation shall be
allocated among the holders of capital stock of the Corporation in accordance with Section 5. 
 5.
Liquidation. 
 a. Upon any liquidation, dissolution or winding up of the Corporation, whether voluntary or involuntary,
after payment or provision for payment of debts and other liabilities of the Corporation, before any distribution or payment shall be made to the holders of any Junior Securities by reason of their ownership thereof, the Holders of Series G
Preferred Stock shall first be entitled to be paid out of the assets of the Corporation available for distribution to its stockholders an amount with respect to each outstanding share of Series G Preferred Stock equal to $10,000.00 (the
“Original Series G Issue Price”), plus any accrued but unpaid Dividends thereon (collectively, the “Series G Liquidation Value”). If, upon any liquidation, dissolution or winding up of the Corporation, whether
voluntary or involuntary, the amounts payable with respect to the shares of Series G Preferred Stock are not paid in full, the holders of shares of Series G Preferred Stock shall share equally and ratably in any distribution of assets of the
Corporation in proportion to the liquidation preference and an amount equal to all accumulated and unpaid Dividends, if any, to which each such holder is entitled. 
 b. After payment has been made to the Holders of the Series G Preferred Stock of the full amount of the Series G Liquidation Value, any remaining assets of the Corporation shall be distributed among the
holders of the Corporation’s Junior Securities in accordance with the Corporation’s Certificates of Designation and Certificate of Incorporation. 
 c. If, upon any liquidation, dissolution or winding up of the Corporation, the assets of the Corporation shall be insufficient to make payment in full to all Holders, then such assets shall be distributed
among the Holders at the time outstanding, ratably in proportion to the full amounts to which they would otherwise be respectively entitled. 

  
 3 

 6. Redemption. 

a. Corporation’s Redemption Option. Upon or after the fourth anniversary of the initial Issuance Date, the Corporation shall
have the right, at the Corporation’s option, to redeem all or a portion of the shares of Series G Preferred Stock, at a price per share (the “Corporation Redemption Price”) equal to 100% of the Series G Liquidation Value.

 b. Early Redemption. Prior to redemption pursuant to Section 6(a) hereof, the Corporation shall have the
right, at the Corporation’s option, to redeem all or a portion of the shares of Series G Preferred Stock, at a price per share equal to: (i) 127% of the Series G Liquidation Value if redeemed on or after the first anniversary but prior to
the second anniversary of the initial Issuance Date, (ii) 118% of the Series G Liquidation Value if redeemed on or after the second anniversary but prior to the third anniversary of the initial Issuance Date, and (iii) 109% of the Series G
Liquidation Value if redeemed on or after the third anniversary but prior to the fourth anniversary of the initial Issuance Date. 
 c. Mandatory Redemption. If the Corporation determines to liquidate, dissolve or wind-up its business and affairs, or effect any Deemed Liquidation Event, the Corporation shall redeem the Series G
Preferred Stock at the prices set forth in Section 6(b) including the premium for early redemption set forth therein. 
 d. Mechanics of Redemption. If the Corporation elects to redeem any of the Holders’ Series G Preferred Stock then outstanding, it shall do so by delivering written notice thereof via facsimile
and overnight courier (“Notice of Redemption at Option of Corporation”) to each Holder, which Notice of Redemption at Option of Corporation shall indicate (A) the number of shares of Series G Preferred Stock that the
Corporation is electing to redeem and (B) the Corporation Redemption Price (plus the premium for early redemption pursuant to Section 6(b) if applicable). 
 e. Payment of Redemption Price. Upon receipt by any Holder of a Notice of Redemption at Option of Corporation, such Holder shall promptly submit to the Corporation such Holder’s Series G
Preferred Stock certificates. Upon receipt of such Holder’s Series G Preferred Stock certificates, the Corporation shall pay the Corporation Redemption Price (plus the premium for early redemption pursuant to Section 6(b) if
applicable), to such Holder, at the Corporation’s option either (i) in cash, or (ii) by offset against any outstanding note payable from Holder to the Corporation that was issued by Holder in connection with the exercise of warrants
by such Holder. 
 7. Transferability. The Series G Preferred Stock may only be sold, transferred, assigned, pledged or
otherwise disposed of (“Transfer”) in accordance with state and federal securities laws. The Corporation shall keep at its principal office, or at the offices of the transfer agent, a register of the Series G Preferred Stock. Upon
the surrender of any certificate representing Series G Preferred Stock at such place, the Corporation, at the request of the record Holder of such certificate, shall execute and deliver (at the Corporation’s expense) a new

  
 4 

 
certificate or certificates in exchange therefor representing in the aggregate the number of shares represented by the surrendered certificate. Each such new certificate shall be registered in
such name and shall represent such number of shares as is requested by the Holder of the surrendered certificate and shall be substantially identical in form to the surrendered certificate. 

8. Miscellaneous. 
 a. Notices. Any and all notices to the Corporation shall be addressed to the Corporation’s President or Chief Executive Officer at the Corporation’s principal place of business on file
with the Secretary of State of the State of Delaware. Any and all notices or other communications or deliveries to be provided by the Corporation to any Holder hereunder shall be in writing and delivered personally, by facsimile, sent by a
nationally recognized overnight courier service addressed to each Holder at the facsimile telephone number or address of such Holder appearing on the books of the Corporation, or if no such facsimile telephone number or address appears, at the
principal place of business of the Holder. Any notice or other communication or deliveries hereunder shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile
at the facsimile telephone number specified in this Section 8 prior to 5:30 p.m. Eastern time, (ii) the date after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile telephone
number specified in this section later than 5:30 p.m. but prior to 11:59 p.m. Eastern time on such date, (iii) the second business day following the date of mailing, if sent by nationally recognized overnight courier service, or (iv) upon
actual receipt by the party to whom such notice is required to be given. 
 b. Lost or Mutilated Preferred Stock
Certificate. Upon receipt of evidence reasonably satisfactory to the Corporation (an affidavit of the registered Holder shall be satisfactory) of the ownership and the loss, theft, destruction or mutilation of any certificate evidencing shares
of Series G Preferred Stock, and in the case of any such loss, theft or destruction upon receipt of indemnity reasonably satisfactory to the Corporation (provided that if the Holder is a financial institution or other institutional investor its own
agreement shall be satisfactory) or in the case of any such mutilation upon surrender of such certificate, the Corporation shall, at its expense, execute and deliver in lieu of such certificate a new certificate of like kind representing the number
of shares of such class represented by such lost, stolen, destroyed or mutilated certificate and dated the date of such lost, stolen, destroyed or mutilated certificate. 
 c. Headings. The headings contained herein are for convenience only, do not constitute a part of this Certificate of Designations and shall not be deemed to limit or affect any of the provisions
hereof. 

  
 5 

 RESOLVED, FURTHER, that the chairman, chief executive officer, president or any
vice-president, and the secretary or any assistant secretary, of the Corporation be and they hereby are authorized and directed to prepare and file a Designation of Preferences, Rights and Limitations of Series G Preferred Stock in accordance with
the foregoing resolution and the provisions of Delaware law. 
 IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Designations this 16th day of February, 2010. 
  

			
	By:	 	 
	Name:	 	Sandra J. Martin
	Title:	 	Chief Financial Officer

  
 6 

 Exhibit C 
 Transfer Agent Instructions 

 [Date] 
 Computershare Inc. 
 250 Royall Street 
 Canton, MA 02021 
 Re: Entech Solar, Inc. 

Ladies and Gentlemen: 
 In
accordance with the Amended and Restated Preferred Stock Purchase Agreement (“Purchase Agreement”), dated November [    ], 2010, by and between Entech Solar, Inc., a Delaware corporation
(“Company”), and Socius CG II, Ltd., a Bermuda exempted company (“Buyer”), pursuant to which Company may issue and deliver shares of common stock of the Company, par value $0.001 per share (“Common
Stock”), in payment of the Commitment Fee payable thereunder (the “Commitment Fee Shares”), and a warrant (the “Warrant”) to purchase additional shares of Common Stock (the “Warrant
Shares”) (the Commitment Fee Shares and Warrant Shares, collectively, the “Common Shares”), this shall serve as our irrevocable authorization and direction to you (provided that you are the transfer agent of the Company at
such time) to issue the Fee Shares and, in the event the holder of the Warrant elects or has elected to exercise all or any portion of the Warrant, from time to time, upon surrender to you of a notice of exercise of the Warrant, the Warrant Shares.
Capitalized terms used herein without definition shall have the respective meanings ascribed to them in the Purchase Agreement. 

Specifically, this shall constitute an irrevocable instruction to you to process any notice of exercise of the Warrant in accordance with
the terms of these instructions as soon as practicable. Upon your receipt of a copy of the executed notice of exercise of the Warrant, you shall use your best efforts to, within one (1) Trading Day following the date of receipt of the notice of
exercise, (A) issue and surrender to a common carrier for overnight delivery to the address as specified in the notice of exercise a certificate, registered in the name of the Buyer or its designee, for the number of shares of Common Stock to
which the Buyer is entitled upon exercise of the Warrant as set forth in the notice of exercise, or (B) provided you are participating in The Depository Trust Company (DTC) Fast Automated Securities Transfer (FAST) Program, upon the request of
the Buyer, credit such aggregate number of shares of Common Stock to which the Buyer is entitled to the Buyer’s or its designee’s balance account with DTC through its Deposit Withdrawal At Custodian (DWAC) system provided the Buyer causes
its bank or broker to initiate the DWAC transaction. 
 The Company hereby confirms that the Common Shares should not be subject
to any stop-transfer restrictions and shall otherwise be freely transferable on the books and records of the Company. If the Common Shares are certificated, the certificates shall not bear any legend restricting transfer of the shares represented
thereby. 

  
 1 

 The Company hereby confirms and you acknowledge that, in the event counsel to the Company
does not issue any opinion of counsel required to issue any Common Shares free of legend, the Company authorizes you to accept an opinion of counsel from Luce Forward Hamilton & Scripps LLP. 

The Company hereby confirms that no instructions other than as contemplated herein will be given to you by the Company with respect to
the Common Shares. The Company hereby agrees that it shall not replace you as the Company’s transfer agent, until such time as the Company provides written notice to you and Buyer that a suitable replacement has agreed to serve as transfer
agent and to be bound by the terms and conditions of this letter agreement regarding Irrevocable Transfer Agent Instructions (this “Agreement”). 
 The Company and you hereby acknowledge and confirm that complying with the terms of this Agreement does not and shall not prohibit you from satisfying any and all fiduciary responsibilities and duties you
may owe to the Company. 
 The Company and you acknowledge that the Buyer is relying on the representations and covenants made
by the Company and you hereunder and that such representations and covenants are a material inducement to the Buyer to enter into the Purchase Agreement. The Company and you further acknowledge that without such representations and covenants made
hereunder, the Buyer would not enter into the Purchase Agreement and purchase Securities pursuant thereto. 
 Each party hereto
specifically acknowledges and agrees that a breach or threatened breach of any provision hereof will cause irreparable damage and that damages at law would be an inadequate remedy if this Agreement were not specifically enforced. Therefore, in the
event of a breach or threatened breach by a party hereto, including, without limitation, the attempted termination of the agency relationship created by this instrument, in addition to all other rights or remedies, an injunction restraining such
breach and granting specific performance of the provisions of this Agreement should issue without any requirement to show any actual damage or to post any bond or other security. 

You may at any time resign as transfer agent hereunder by giving thirty (30) days prior written notice of resignation to the
Company and the Buyer. Prior to the effective date of the resignation as specified in such notice, the Company will issue to you instructions authorizing delivery of Common Shares to a substitute transfer agent selected by, and in the sole
discretion of, the Company. If no successor transfer agent is named by the Company, you may apply to a court of competent jurisdiction in the State of Delaware for appointment of a successor transfer agent and for an order to deposit Common Shares
with the clerk of any such court. 
 The Company must keep its bill current with you – if the Company is not current and is
on suspension, the Buyer will have the right to pay the Company’s outstanding bill, in order for you to act upon this Agreement. If the outstanding bill is not paid by the Company or the Buyer, you have no further obligation under this
Agreement. 

  
 2 

 IN WITNESS WHEREOF, the parties have caused this letter agreement regarding Irrevocable
Transfer Agent Instructions to be duly executed and delivered as of the date first written above. 
  

			
	ENTECH SOLAR, INC.
		
	By:	 	 
	Name:	 	
	Title:	 	

 THE FOREGOING INSTRUCTIONS ARE ACKNOWLEDGED AND AGREED TO: 

 

			
	Computershare Inc.
		
	By:	 	 
	Name:	 	  

	Title:	 	  

  
 3 

 Exhibit D 
 Lock-Up Agreement 

 [Effective Date] 
 Socius CG II, Ltd. 
 Clarendon House 
 2 Church Street 
 Hamilton HM 11 Bermuda 
 Ladies and Gentlemen: 
 This Lock-Up Agreement is being delivered to you in
connection with the Amended and Restated Preferred Stock Purchase Agreement dated as of November [    ], 2010 (“Purchase Agreement”) and entered into by and among Entech Solar, Inc., a Delaware corporation
(“Company”) and Socius CG II, Ltd., a Bermuda exempted company (“Investor”), with respect to the purchase without registration under the Securities Act of 1933, as amended (the “Act”), in reliance
on Section 4(2) of the Act and Rule 506 of Regulation D promulgated thereunder, of shares of the Company’s Series G Preferred Stock and related Securities. Capitalized terms used herein without definition shall have the respective meanings
ascribed to them in the Purchase Agreement. 
 In order to induce Investor to enter into the Purchase Agreement, the undersigned
agrees that, for a period of ten Trading Days beginning on each date the Company delivers a Tranche Notice to Investor (the “Tranche Notice Date”) and ending on the Tranche Closing Date pursuant to the terms of the Purchase
Agreement (the “Lock-up Period”), the undersigned will not, without the prior written consent of Investor, (a) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise
dispose of or agree to dispose of, directly or indirectly, in respect of, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of
1934, as amended, and the rules and regulations of the SEC promulgated thereunder (the “Exchange Act”) with respect to, any Common Stock of the Company or any securities convertible into or exercisable or exchangeable for Common
Stock, or warrants or other rights to purchase Common Stock or any such securities, or any securities substantially similar to the Common Stock, (b) enter into any swap or other arrangement that transfers to another, in whole or in part, any of
the economic consequences of ownership of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or any such securities, or warrants or other rights to purchase Common Stock, whether any such transaction is
to be settled by delivery of Common Stock or such other securities, in cash or otherwise, or (c) publicly announce an intention to effect any transaction specified in clause (a) or (b). 

The foregoing sentence shall not apply to (a) bona fide gifts, provided the recipient thereof agrees in writing to be bound by the
terms of this Lock-Up Agreement, (b) dispositions to any trust for the direct or indirect benefit of the undersigned and/or the immediate family of the undersigned, provided that such trust agrees in writing to be bound by the terms of this
Lock-Up 

  
 1 

 
Agreement, (c) sales made pursuant to any written sales plans established prior to the date of this Lock-Up Agreement in conformity with the requirements of Rule 10b5-1(c) promulgated under
the Exchange Act or (d) exercise of options for Common Stock and the disposition (whether by sale, gift or otherwise) of Common Stock underlying such options. Notwithstanding clause (a) above, the undersigned may make a bona fide gift of
up to 10,000 shares of Common Stock to a charity or other non-profit entity and such charity or entity shall not be required to be bound by the terms of this Lock-Up Agreement; provided, however, that in the event the undersigned
exercises options during the Lock-Up Period, the undersigned may not, during the Lock-Up Period, dispose of the number of shares of Common Stock underlying such exercised options equal to the number of shares of Common Stock gifted by the
undersigned pursuant to this sentence during the Lock-Up Period. For purposes of this paragraph, “immediate family” shall mean the undersigned and the spouse, any lineal descendent, father, mother, brother or sister of the undersigned.

 The Company agrees to provide the undersigned with notice that the Company has delivered a Tranche Notice to Investor prior
to, or simultaneous with, its delivery of the Tranche Notice to Investor. Such notice shall provide the undersigned with the Tranche Notice Date and clearly indicate the beginning of the Lock-up Period. The undersigned agrees to promptly acknowledge
such notice in writing to the Company. 
 Upon the termination of the Purchase Agreement, this Lock-Up Agreement shall be
terminated and the undersigned shall be released from its obligations hereunder. 
  

	
	Sincerely,
	
	  
	Stockholder
	Print Name:
[                                        
]
	Number of Shares Owned:
[                                    ]

Acknowledged and Agreed: 
  

			
	Entech Solar, Inc.
		
	By:	 	 
	Name:	 	
	Title:	 	

  
 2 

 Exhibit E 
 Opinion 

 FORM OF LEGAL OPINION SUBJECT TO OPINION COMMITTEE 

CLEARANCE AT EACH ISSUE DATE 
 [DATE OF TRANCHE] 
 Socius CG II, Ltd. 
 Clarendon House 
 2 Church Street 
 Hamilton HM 11 Bermuda 
 Re: Entech Solar, Inc. 

Ladies and Gentlemen: 
 We have acted as
counsel to Entech Solar, Inc., a Delaware corporation (the “Company”), in connection with the Amended and Restated Preferred Stock Purchase Agreement dated as of November [    ], 2010 (the “Agreement”),
among the Company and Socius CG II, Ltd. (the “Purchaser”), pursuant to which the Purchaser has agreed to purchase from the Company (a) up to an aggregate of $5,000,000 of shares of its Series G Preferred Stock, par value $0.01 per
share (the “Series G Preferred Stock”) and (b) a warrant (the “Warrant”) to purchase up to an aggregate of $6,750,000 of shares of its common stock, par value $0.001 per share (the “Common Stock”). Capitalized
terms used herein and not otherwise defined shall have the respective meanings given such terms in the Agreement. This opinion is rendered to you pursuant to Section 2.3(e)(ii) of the Agreement. 

Although we act generally as counsel to the Company, our representation is limited to matters individually referred to us by the Company’s
management. 
 As to all matters of fact (including factual conclusions and characterizations and descriptions of purpose, intention or other
state of mind), we have relied, with your permission, entirely upon (a) the representations and warranties of the parties set forth in the Agreement and each of the other Transaction Documents (as defined below) and (b) certificates of
certain of the officers of the Company and have assumed, without independent inquiry, the accuracy of those representations, warranties, and certificates. For purposes of our opinion rendered in paragraph 1 below, with respect to the incorporation,
existence and standing of the Company, our opinion relies entirely upon and is limited by the certificate of public official attached hereto as Exhibit A. 
 In connection with this opinion, we have examined originals or copies of the following documents: 
  

	 	(i)	the Agreement; 

  

	 	(ii)	the Amended and Restated Warrant to Purchase Common Stock dated November [    ], 2010, issued by the Company to Purchaser;

  

	 	(iii)	the Form of Secured Promissory Note attached as Appendix 2 to the Agreement; 

 Entech Solar, Inc. 
 [DATE OF TRANCHE] 
 Page 2 

 

  

	 	(iv)	the Amended and Restated Certificate of Incorporation of the Company (the “Amended and Restated Certificate”), including the Certificate of Designations of
Preferences, Rights and Limitations of Series G Preferred Stock as certified by the Secretary of State of the State of Delaware on [DATE]; 

  

	 	(v)	the Amended and Restated By-laws of the Company (the “By-laws”); 

 

	 	(vi)	a Certificate of the President of the Company (the “Company Certificate”); 

 

	 	(vii)	the certificate of certain officers of the Company, as of the date hereof, as to (i) the By-laws of the Company on [DATE], (ii) certain resolutions adopted by
written consent of the Board of Directors of the Company (the “Board of Directors”) on February 16, 2010 and November 11, 2010, and (iii) the titles, incumbency, and specimen signatures of certain officers of the Company;
and 

  

	 	(viii)	the certificate of public official attached hereto as Exhibit A. 

 The documents specified in items (i) through (ii) above are referred to herein, collectively, as the “Transaction Documents”. We have examined the documents listed in the preceding
paragraph and such other corporate and public records and agreements, instruments, certificates and other documents as we have deemed necessary or appropriate for the purposes of this opinion. 

We have assumed the genuineness of all signatures, the conformity to the originals of all documents reviewed by us as copies, the authenticity and
completeness of all original documents reviewed by us in original or copy form and the legal competence of each individual executing any document. 
 For purposes of this opinion, we have made such examination of law as we have deemed necessary. This opinion is limited solely to the internal substantive laws of the State of New York as applied by
courts located in New York without regard to choice of law, the federal laws of the United States of America (except for Federal and state tax, antitrust, utilities, national security, anti-money laundering, and blue sky laws, as to which we express
no opinion in this letter) and the Delaware General Corporation Law (the “DGCL”) and we express no opinion as to the laws of any other jurisdiction. We have not conducted any special review of statutes, rules or regulations for purposes of
this opinion, and our opinions are limited to such laws, rules and regulations as in our experience are normally applicable to transactions of the type contemplated by the Transaction Documents. 

We note that certain of the Transaction Documents contain provisions stating that they are governed by the laws of the State of New York, with the
exception of matters within the scope of the DGCL, in which case the DGCL shall apply (each contractual choice of law clause being referred to as a “Chosen-Law Provision”). No opinion is given herein as to any Chosen-Law Provision or
otherwise as to the choice of law or internal substantive rules of law that any court or other tribunal may apply to the transaction contemplated by the Transaction Documents. 

 Entech Solar, Inc. 
 [DATE OF TRANCHE] 
 Page 3 

 

 Our opinion is further subject to the following exceptions, qualifications and assumptions, all of which
we understand to be acceptable to you: 
  

	 	(a)	We have assumed without any independent investigation that each party to the Agreement and the other Transaction Documents, other than the Company, at all times
relevant thereto, is qualified to do business and in good standing under the laws of each jurisdiction where such qualification is necessary in order for such party to enforce its rights under the Transaction Documents. 

 

	 	(b)	We have assumed without any independent investigation that the Company has received the consideration called for by the resolutions of the Board of Directors
authorizing the issuance of the Series G Preferred Stock, the Warrant and the Common Stock. 

  

	 	(c)	The enforcement of any obligations of the Company or any other Person, whether under any of the Transaction Documents or otherwise, may be limited by bankruptcy,
insolvency, reorganization, moratorium, marshaling or other laws and rules of law affecting the enforcement generally of creditors’ rights and remedies, including, without limitation, fraudulent conveyance and fraudulent transfer laws.

  

	 	(d)	We express no opinion as to the availability of any specific or equitable relief of any kind. 

 

	 	(e)	The enforcement of any of your rights may in all cases be subject to an implied duty of good faith and fair dealing and to general principles of equity (regardless of
whether such enforceability is considered in a proceeding at law or in equity), including without limitation, concepts of materiality and reasonableness. 

  

	 	(f)	We express no opinion as to the enforceability of any particular provision of any Transaction Documents relating to or constituting: 

(i) waivers of rights to object to jurisdiction or venue, consents to jurisdiction or venue, or waivers of rights to (or methods of)
service of process; 
 (ii) waivers of rights to trial by jury, or other rights or benefits bestowed by operation of law;

 (iii) waivers of any applicable defenses, setoffs, recoupments, or counterclaims; 

 Entech Solar, Inc. 
 [DATE OF TRANCHE] 
 Page 4 

 

 (iv) the grant of powers of attorney or proxies to the Purchasers; 

(v) exculpation or exoneration clauses, clauses relating to indemnification or contribution, and clauses relating to releases or waivers
of unmatured claims or rights; and 
 (vii) the imposition or collection of interest on overdue interest or providing for a
penalty rate of interest or late charges on overdue or defaulted obligations, or the payment of any premium, liquidated damages, or other amount which may be held by any court to be a “penalty” or a “forfeiture”. 

 

	 	(g)	We express no opinion as to the effect of events occurring, circumstances arising, or changes of law becoming effective or occurring, after the date hereof on the
matters addressed in this opinion letter, and we assume no responsibility to inform you of additional or changed facts, or changes in law, of which we may become aware. 

Based upon and subject to the foregoing, and other than as disclosed on the schedules to the Agreement, we are of the opinion that:

 1. The Company is a corporation validly existing and in corporate good standing under the laws of the State of Delaware.

 2. The Company has the corporate power and authority to execute and deliver each of the Transaction Documents and to issue,
sell and deliver the Series G Preferred Stock, the Warrant and the Common Stock and to perform its obligations under each of the Transaction Documents. The Transaction Documents and the execution, delivery and performance thereof have been duly
authorized by all necessary corporate action on behalf of the Company. 
 3. The Series G Preferred Stock, the Warrant and the
Common Stock are duly authorized and the Series G Preferred Stock and Common Stock, when issued in accordance with the terms of the Transaction Documents, will be validly issued, fully paid and non-assessable. 

4. The execution, delivery and performance by the Company of each of the Transaction Documents and the consummation of the transactions
contemplated thereby, including the issuance, sale and delivery of the Series G Preferred Stock, the Warrant and the Common Stock (assuming for the purposes of this paragraph 4 that such Common Stock is issued in accordance with the terms of the
Transaction Documents) will not violate any provision of the DGCL or any federal or New York law, statute, rule or regulation applicable to the Company or any existing provision of the Amended and Restated Certificate or the By-laws. 

 Entech Solar, Inc. 
 [DATE OF TRANCHE] 
 Page 5 

 

 5. Each of the Transaction Documents has been duly executed by or on behalf of the
Company and constitutes a legal, valid and binding agreement of the Company, enforceable against it in accordance with its terms. 
 6. The offer and sale to you of the Series G Preferred Stock, the Warrants and the Common Stock pursuant to, and in accordance with, the Transaction Documents do not require registration under the
Securities Act of 1933, as amended. 
 This opinion is rendered to you for your benefit in connection with the transactions contemplated by the
Agreement and may not be referred to or used for any other purpose, or delivered to, or relied upon by, any other party without our prior written consent. 

 

	
	Very truly yours,
	
	BINGHAM McCUTCHEN LLP

 Exhibit A 

Certificate of Public Official 

  
 1 

 Exhibit F 
 Use of Proceeds Certificate 

 ENTECH SOLAR, INC. 
 USE OF PROCEEDS CERTIFICATE 
 The undersigned,
[                    ] and
[                    ], hereby certify that: 
 1. They are the [                    ] and
[                    ], respectively, of Entech Solar, Inc., a Delaware corporation (the “Company”). 

2. This Use of Proceeds Certificate (this “Certificate”) is being delivered to Socius CG II, Ltd.
(“Investor”), by the Company, to fulfill the requirement under Section 2.3(d)(iii) of the Amended and Restated Preferred Stock Purchase Agreement dated as of November [ ], 2010, between Investor and the Company (the
“Purchase Agreement”). Terms used and not defined in this Certificate have the meanings set forth in the Purchase Agreement. 
 3. On or prior to the date hereof, the Company has delivered to Investor a Tranche Notice for the purchase by Investor of Tranche Shares upon payment by the Company to Investor of the Tranche Purchase
Price. 
 The undersigned do hereby certify that the Tranche Purchase Price will be used for the following purpose or purposes:

[                       
                 ]. 
 IN WITNESS WHEREOF,
the undersigned have executed this Certificate this[    ] day of             , 2010. 

 

			
	By:	 	 
	Name:	 	
	Title:	 	
		
	By:	 	  

	Name:	 	
	Title:	 	

 Exhibit G 
 Tranche Notice 

 Dated: [            ],
20[    ] 
 Socius CG II, Ltd. 
 Clarendon House 
 2 Church Street 
 Hamilton HM 11 Bermuda 
  

	 	Re:	Tranche Notice 

 Ladies & Gentlemen:

 Pursuant to the Amended and Restated Preferred Stock Purchase Agreement dated as of November [    ], 2010
(“Agreement”) between Entech Solar, Inc., a Delaware corporation (“Company”), and Socius CG II, Ltd. (“Investor”), Company hereby elects to exercise a Tranche. Capitalized terms not otherwise
defined herein shall have the meanings defined in the Agreement. 
 At the Tranche Closing, Company will sell to Investor
[            ] Preferred Shares at $10,000.00 per share for a Tranche Amount of $[            ]. 

On behalf of Company, the undersigned hereby certifies to Investor as follows: 

1. The undersigned is a duly authorized officer of Company; 
 2. The above Tranche Amount does not exceed the Maximum Tranche Amount; and 
 3.
All of the conditions precedent to the right of the Company to deliver a Tranche Notice set forth in Section 2.3(d) of the Agreement have been satisfied. 
 IN WITNESS WHEREOF, the Company has executed and delivered this Tranche Notice as of the date first written above. 

 

			
	ENTECH SOLAR, INC.
		
	By:	 	 
	Name:	 	
	Title:Amended & Restated Warrant to Purchase Common Stock

 Exhibit 10.48 
 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, OR (B) AN OPINION OF COUNSEL (WHICH COUNSEL SHALL BE SELECTED BY THE HOLDER), IN A GENERALLY ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR (II) UNLESS SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT.
NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES. 
 ENTECH SOLAR, INC. 

AMENDED AND RESTATED 

WARRANT TO PURCHASE COMMON STOCK 

 

			
	Warrant No.: 2010-1	  	Issuance Date: November 29, 2010
		
	Number of Warrant Shares: 84,375,000	  	
		
	Exercise Price: $0.08 per share	  	

 Entech Solar, Inc., a Delaware corporation (“Company”), hereby certifies that,
for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Socius CG II, Ltd., a Bermuda exempted company, the holder hereof, or its designees or assigns (“Holder”), is obligated, subject to
the terms set forth herein, to purchase from the Company, at the Exercise Price set forth herein, upon automatic exercise of this Amended and Restated Warrant to Purchase Common Stock (including any warrant issued in exchange, transfer or
replacement hereof, the “Warrant”), subject to acceleration pursuant to Section 3.3 hereof, that number of duly authorized, validly issued, fully paid and non-assessable shares of Common Stock set forth above and as
adjusted herein (the “Warrant Shares”). 
 This Warrant is issued pursuant to the Amended and Restated
Preferred Stock Purchase Agreement dated November 24, 2010, by and among the Company and the investor referred to therein (the “Purchase Agreement”). Except as otherwise defined herein, capitalized terms in this Warrant shall
have the meanings set forth in ARTICLE 13 hereof. 
 This Warrant fully amends and restates the Warrant to Purchase Common Stock
issued by the Company to Holder dated February 19, 2010 (the “Prior Warrant”), which such Prior Warrant shall be surrendered to the Company by the Holder for cancellation and is hereby cancelled and voided in its entirety ab
initio. 

  
 1 

 This Warrant shall consist of and be exercisable in tranches (each, a “Warrant
Tranche”), with a separate tranche being created upon each delivery of a Tranche Notice under the Purchase Agreement. Each Warrant Tranche will obligate the Holder to exercise the Warrant and purchase a number of shares of Common Stock with
an Aggregate Exercise Price equal to 135% of the Tranche Purchase Price for the applicable Tranche Notice. Attached to this Warrant is a schedule (the “Warrant Exercise Schedule”) that sets forth the issuance date, the number of
Warrant Shares, and the Exercise Price for each Warrant Tranche. The Warrant Exercise Schedule shall be updated by the Company, with an updated copy provided to the Holder, promptly following each exercise of this Warrant. Notwithstanding anything
to the contrary in this Warrant, no portion of this Warrant shall vest or be exercisable except under the Warrant Tranches (the “Tranche Limitation”). 
 In no event shall the Company be permitted to deliver a Tranche Notice if the number of registered shares underlying this Warrant is insufficient to cover the portion of the Warrant that will vest and
become automatically exercisable in connection with such Tranche Notice. If the number of registered shares underlying this Warrant is or becomes insufficient to permit the Company to issue registered shares upon exercise of this Warrant, the
Company shall promptly amend the Registration Statement to include more shares thereunder, with such amendment to be filed sufficiently in advance of the date the Company intends to deliver a Tranche Notice so as to ensure that registered shares are
available to Holder on the Tranche Notice Date. 
 ARTICLE 1 

EXERCISE OF WARRANT. 
 1.1 Mechanics of Exercise. 
 1.1.1 Subject to the terms and
conditions hereof (including without limitation the Tranche Limitation), this Warrant shall be automatically exercised by the Holder on each Tranche Notice Date, with such exercise documented by (i) delivery by Holder of a written notice to the
Company, in the form attached hereto as Appendix 1 (the “Exercise Notice”), of the exercise of this Warrant, and (ii) 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”), with such payment made, at Holder’s option, (x) in cash or by wire transfer of immediately available funds, (y) by the
issuance and delivery of a recourse promissory note substantially in the form attached hereto as Appendix 2 (each, a “Recourse Note”), or (z) if applicable, by cashless exercise pursuant to Section 1.3. 

1.1.2 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. 
 1.1.3 On the Trading Day on which the Company has received each of the Exercise Notice and the Aggregate
Exercise Price (the “Exercise Delivery Documents”) from the 

  
 2 

 
Holder by 6:30 p.m. Eastern time, or on the next Trading Day if the Exercise Delivery Documents are received after 6:30 p.m. Eastern time or on a non-Trading Day (in each case, the
“Exercise Delivery Date”), the Company shall transmit (i) a facsimile acknowledgment of confirmation of receipt of the Exercise Delivery Documents to the Holder, and (ii) an electronic copy of its share issuance
instructions to the Holder and to the Company’s transfer agent (the “Transfer Agent”), with such transmissions to comply with the notice provisions contained in Section 6.2 of the Purchase Agreement, and shall
instruct and authorize the Transfer Agent to credit such aggregate number of freely-tradable Warrant Shares to which the Holder is entitled to receive upon such exercise to the Holder’s or its designee’s balance account with The Depository
Trust Company (DTC) through the Fast Automated Securities Transfer (FAST) Program through its Deposit Withdrawal Agent Commission (DWAC) system, with such credit to occur no later than 12:00 p.m. Eastern Time on the Trading Day following the
Exercise Delivery Date, time being of the essence; provided, however, that if any Warrant Shares issuable in connection with the Company’s delivery of a Tranche Notice are not credited as DWAC Shares by 12:00 p.m. Eastern Time on
the Trading Day following the Tranche Notice Date, then the Tranche Closing Date applicable to the Exercise Notice shall be extended by one Trading Day for each Trading Day that timely credit of DWAC Shares is not made. 

1.1.4 Upon automatic exercise of the Warrant, 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. 
 1.1.5 If this Warrant is exercised and the number of Warrant Shares represented by this Warrant is greater than the number of Warrant Shares being acquired upon such exercise, then the Company
shall, as soon as practicable and in no event later than one Trading Day after such exercise, update the Warrant Exercise Schedule to reflect the revised number of Warrant Shares for which this Warrant is then exercisable and deliver a copy of the
updated Warrant Exercise Schedule to the Holder. No fractional shares of Common Stock are to be issued upon the exercise of this Warrant, but rather the number of shares of Common Stock to be issued shall be rounded up to the nearest whole number.
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, other than income-related taxes payable by the Holder. 

1.2 Adjustments to Exercise Price and Number of Shares. In addition to other adjustments specified herein, the Exercise
Price of this Warrant and the number of shares of Common Stock issuable upon exercise shall be adjusted as follows: 
 1.2.1
Exercise Price. The “Exercise Price” per share of Common Stock underlying this Warrant, subject to further adjustment as provided herein, shall be as follows: (i) with respect to the Warrant issued on the Effective Date and
until the first Tranche Notice Date, the amount per Warrant Share set forth on the face of this Warrant, which is equal to Closing Bid Price for the Common Stock on the Trading Day prior to the Effective Date, and (ii) with respect to the
portion of this Warrant that becomes exercisable on any Tranche Notice 

  
 3 

 
Date (including the first Tranche Notice Date), an amount per Warrant Share equal to the Closing Bid Price of a share of Common Stock on the Trading Day immediately preceding such Tranche Notice
Date. 
 1.2.2 Number of Shares. Subject to the Tranche Limitation, the number of Warrant Shares underlying this
Warrant and each Warrant Tranche, subject to further adjustment as provided herein, shall be as follows: (i) with respect to the portion of this Warrant as issued on the Effective Date and until the first Tranche Notice Date, the number of
shares set forth on the face of this Warrant, which shall be that number of shares of Common Stock equal to the Maximum Placement multiplied by 135%, with the resulting sum divided by the Closing Bid Price of a share of Common Stock on the Trading
Day prior to the Effective Date, and (ii) with respect to the portion of this Warrant that become exercisable on any Tranche Notice Date including the first Tranche Notice Date, a number of shares equal to the Tranche Purchase Price set forth
in the applicable Tranche Notice multiplied by 135%, with the resulting sum divided by the Closing Bid Price of a share of Common Stock on the Tranche Notice Date. For example, if the Tranche Purchase Price is $1,000,000 and the Closing Bid Price is
$0.50, then the number of Warrant Shares underlying that Warrant Tranche shall be $1,000,000 x 135% = $1,350,000 divided by $0.50 = 2,700,000 shares of Common Stock. On each Tranche Notice Date, the number of Warrant Shares underlying the related
Warrant Tranche shall vest and be automatically exercised, and the aggregate number of Warrant Shares underlying this Warrant that are currently exercisable shall automatically adjust up or down to account for the change in the number of Warrant
Shares covered by the new Warrant Tranche and for any Warrant Shares issued upon any prior or simultaneous exercise of this Warrant. If at any time the Holder reasonably believes that the number of Warrant Shares included in the Registration
Statement is not sufficient to cover all exercises under this Warrant, then the Company shall amend such Registration Statement to include the additional number of Warrant Shares that may be required to provide such coverage. 

1.3 Cashless Exercise. Notwithstanding anything contained herein to the contrary, if at any time there is not a current,
valid and effective registration statement covering the Warrant Shares that are the subject of the Exercise Notice (the “Unavailable 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 = (B-C) x A 

                       
         B 
 For purposes of the foregoing formula: 

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

  
 4 

 B = the average of the Closing Bid Prices of the shares of Common Stock (as reported by
Bloomberg) 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. 
 1.4 Company’s Failure to Timely Deliver Securities. If the Company shall fail, for any reason or for no reason to credit to the Holder’s balance account with DTC, by 12:00 p.m.
Eastern time on the Trading Day following the Tranche Notice Date, the number of shares of Common Stock to which the Holder is entitled upon automatic exercise of this Warrant, then, in addition to all other remedies available to the Holder, the
Company shall pay in cash to the Holder on each day after such Trading Day that the issuance of such shares of Common Stock is not timely effected an amount equal to 1.5% of the product of (A) the sum of the number of shares of Common Stock not
issued to the Holder on a timely basis and to which the Holder is entitled and (B) the Closing Bid Price of the shares of Common Stock on the Trading Day immediately preceding the last possible date which the Company could have issued such
shares of Common Stock to the Holder without violating Section 1.1. In addition to the foregoing, if after the Company’s issuance of a Tranche Notice the Company shall fail to timely (pursuant to Section 1.1.3 hereof)
credit the Holder’s balance account with DTC for the number of shares of Common Stock to which the Holder is entitled upon the automatic exercise of the applicable portion of this Warrant, and 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 one Trading Day
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 credit such Holder’s balance account with DTC for the number of Warrant Shares to which the Holder is entitled upon the Holder’s exercise
hereunder and to issue such Warrant Shares shall terminate, or (ii) promptly honor its obligation to credit such Holder’s balance account with DTC for the number of Warrant Shares to which the Holder is entitled upon the Holder’s
exercise hereunder 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 sold by Holder in satisfaction of its obligations, times (B) the
Closing Bid Price on the date of exercise. 
 1.5 Exercise Limitation. Notwithstanding any other provision, at no
time may the Company deliver a Tranche Notice if such delivery would trigger either: (a) exercise of this Warrant such that the number of Warrant Shares to be received pursuant to such exercise exceeds 135.0% of the aggregate of all Tranche
Purchase Prices under and in connection with all Tranche Notices delivered pursuant to the Purchase Agreement prior to the date of exercise; or (b) exercise of this Warrant such that the number of Warrant Shares to be received pursuant to such
exercise, aggregated with all other shares of Common Stock or other voting securities of the Company then owned or deemed beneficially owned by the Holder and its affiliates, would result 

  
 5 

 
in the Holder and its affiliates owning or being deemed to beneficially own more than 9.99% of the Common Stock or other voting securities of the Company as would be outstanding on the date of
exercise, with such ownership percentage determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder (the “Holder Ownership Limit”). In addition, as of any date, the
aggregate number of shares of Common Stock into which this Warrant is exercisable within 61 days, together with all other shares of Common Stock or other voting securities of the Company then owned or deemed beneficially owned by Holder and its
affiliates, shall not exceed the Holder Ownership Limit. 
 1.6 Activity Restrictions. For so long as Holder or
any of its affiliates holds this Warrant or any Warrant Shares, neither Holder nor any affiliate will: (i) vote any shares of Common Stock owned or controlled by it, solicit any proxies, or seek to advise or influence any Person with respect to
any voting securities of the Company; (ii) engage or participate in any actions, plans or proposals which relate to or would result in (a) acquiring additional securities of the Company, alone or together with any other Person, which would
result in Holder and/or its affiliates exceeding the Holder Ownership Limit, (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving Company or any of its subsidiaries, (c) a sale or transfer
of a material amount of assets of the Company or any of its subsidiaries, (d) any change in the present board of directors or management of the Company, including any plans or proposals to change the number or term of directors or to fill any
existing vacancies on the board, (e) any material change in the present capitalization or dividend policy of the Company, (f) any other material change in the Company’s business or corporate structure, including but not limited to, if
the Company is a registered closed-end investment company, any plans or proposals to make any changes in its investment policy for which a vote is required by Section 13 of the Investment Company Act of 1940, (g) changes in the
Company’s charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Company by any Person, (h) causing a class of securities of the Company to be delisted from a national
securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association, (i) a class of equity securities of the Company becoming eligible for termination of registration
pursuant to Section 12(g)(4) of the Act, or (j) any action, intention, plan or arrangement similar to any of those enumerated above; or (iii) request the Company or its directors, officers, employees, agents or representatives to
amend or waive any provision of this Section 1.6. 
 1.7 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 and resolve such dispute in accordance with Section 12.

 1.8 Insufficient Authorized Shares. If at any time while any portion of this Warrant remains outstanding the
Company does not have a sufficient number of authorized and unreserved shares of Common Stock to satisfy its obligation to reserve for issuance upon exercise of this Warrant at least a number of shares of Common Stock equal to 110% of the number of
shares of Common Stock as shall from time to time be necessary to effect the exercise 

  
 6 

 
of the portion of the Warrant then outstanding (the “Required Reserve Amount”) (an “Authorized Share Failure”), then the Company shall immediately take all
action necessary to increase the Company’s authorized shares of Common Stock to an amount sufficient to allow the Company to reserve the Required Reserve Amount for the portion of the Warrant then outstanding. Without limiting the generality of
the foregoing sentence, as soon as practicable after the date of the occurrence of an Authorized Share Failure, but in no event later than 90 days after the occurrence of such Authorized Share Failure, the Company shall hold a meeting of its
stockholders for the approval of an increase in the number of authorized shares of Common Stock. In connection with such meeting, the Company shall provide each stockholder with a proxy statement and shall use its best efforts to solicit its
stockholders’ approval of such increase in authorized shares of Common Stock and to cause its board of directors to recommend to the stockholders that they approve such proposal. 

ARTICLE 2  
 ADJUSTMENT UPON SUBDIVISION OR COMBINATION OF COMMON STOCK 
 If the
Company at any time on or after the Issuance Date subdivides (by any stock split, stock dividend, recapitalization or otherwise) one or more classes of its outstanding shares of Common Stock into a greater number of shares, the Exercise Price in
effect immediately prior to such subdivision will be proportionately reduced and the number of Warrant Shares will be proportionately increased. If the Company at any time on or after the Issuance Date combines (by combination, reverse stock split
or otherwise) one or more classes of its outstanding shares of Common Stock into a smaller number of shares, the Exercise Price in effect immediately prior to such combination will be proportionately increased and the number of Warrant Shares will
be proportionately decreased. Any adjustment under this ARTICLE 2 shall become effective at the close of business on the date the subdivision or combination becomes effective. 
 ARTICLE 3  
 PURCHASE RIGHTS; FUNDAMENTAL TRANSACTIONS

 3.1 Purchase Rights. In addition to any adjustments pursuant to ARTICLE 2 above, if at any time the Company
grants, issues or sells any Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the record holders of any class of shares of Common Stock (the “Purchase Rights”), then the
Holder will be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have acquired if the Holder had held the number of shares of Common Stock acquirable upon complete exercise
of this Warrant (without regard to any limitations on the exercise of this Warrant) immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, 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 grant, issue or sale of such Purchase Rights. 

3.2 Subsequent Equity Sales. In addition to any adjustments made pursuant to ARTICLE 2 above, if the Company or any
Subsidiary thereof, as applicable, at any time subsequent to the first Tranche Closing Date while this Warrant is outstanding, shall sell or grant 

  
 7 

 
any option to purchase, or sell or grant any right to reprice, or otherwise dispose of or issue (or announce any offer, sale, grant or any option to purchase or other disposition) any Common
Stock or Common Stock Equivalents entitling any Person other than the Holder to acquire shares of Common Stock, at an effective price per share less than the then Exercise Price (such lower price, the “Base Share Price” and such
issuances, collectively, a “Dilutive Issuance”), then the Exercise Price shall be reduced and only reduced to equal the Base Share Price and the number of Warrant Shares issuable hereunder shall be increased such that the aggregate
Exercise Price payable hereunder, after taking into account the decrease in the Exercise Price, shall be equal to the aggregate Exercise Price prior to such adjustment. Except as otherwise provided herein, such adjustment shall be made whenever such
Common Stock or Common Stock Equivalents are issued. If the holder of the Common Stock or Common Stock Equivalents so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or
exchange prices or otherwise, or due to warrants, options or rights per share which are issued in connection with such issuance, be entitled to receive shares of Common Stock at an effective price per share which is less than the Exercise Price,
such issuance shall be deemed to have occurred for less than the Exercise Price on such date of the Dilutive Issuance, provided, however, that such date of the Dilutive Issuance is after the first Tranche Closing Date. Notwithstanding
the foregoing, no adjustments shall be made, paid or issued under this Section 3.2 in respect of an Exempt Issuance, subject to adjustment for reverse and forward stock splits, stock dividends, stock combinations and other similar
transactions of the Common Stock, or securities issued under employee benefit plans, that occur after the date of the Purchase Agreement. The Company shall notify the Holder in writing, no later than the Trading Day following the issuance of any
Common Stock or Common Stock Equivalents subject to this Section 3.2, indicating therein the applicable issuance price, or applicable reset price, exchange price, conversion price and other pricing terms (such notice the
“Dilutive Issuance Notice”). For purposes of clarification, whether or not the Company provides a Dilutive Issuance Notice pursuant to this Section 3.2, upon the occurrence of any Dilutive Issuance, after the date of
such Dilutive Issuance the Holder is entitled to receive a number of Warrant Shares based upon the Base Share Price regardless of whether the Holder accurately refers to the Base Share Price in the Notice of Exercise. 

3.3 Fundamental Transactions. The Company shall not enter into or be party to a Fundamental Transaction 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 3.3 pursuant to written agreements in form and substance satisfactory to the Required Holders
and approved by the Required Holders prior to such Fundamental Transaction, including agreements to deliver to each Holder of this Warrant in exchange for such Warrant a security of the Successor Entity evidenced by a written instrument
substantially similar in form and substance to this Warrant, including, without limitation, an adjusted exercise price equal to the value for the shares of Common Stock reflected by the terms of such Fundamental Transaction, and exercisable for a
corresponding number of shares of capital stock equivalent to the 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 Fundamental
Transaction, and satisfactory to the Required Holders. Upon the occurrence of any Fundamental Transaction, the Successor Entity shall 

  
 8 

 
succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction, 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. Upon
consummation of the Fundamental Transaction, the Successor Entity shall deliver to the Holder confirmation that there shall be issued upon exercise of this Warrant at any time after the consummation of the Fundamental Transaction, in lieu of the
shares of the Common Stock (or other securities, cash, assets or other property) purchasable upon the exercise of this Warrant prior to such Fundamental Transaction, such shares of stock, securities, cash, assets or any other property whatsoever
(including warrants or other purchase or subscription rights) which the Holder would have been entitled to receive upon the happening of such Fundamental Transaction had this Warrant been converted immediately prior to such Fundamental Transaction,
as adjusted in accordance with the provisions of this Warrant. In addition to and not in substitution for any other rights hereunder, prior to the consummation of any Fundamental Transaction pursuant to which holders of shares of Common Stock are
entitled to receive securities or other assets with respect to or in exchange for shares of Common Stock (a “Corporate Event”), the Company shall make appropriate provision to insure that the Holder will thereafter have the right to
receive upon an exercise of this Warrant at any time after the consummation of the Fundamental Transaction, in lieu of the shares of the Common Stock (or other securities, cash, assets or other property) purchasable upon the exercise of this Warrant
prior to such Fundamental Transaction, such shares of stock, securities, cash, assets or any other property whatsoever (including warrants or other purchase or subscription rights) which the Holder would have been entitled to receive upon the
happening of such Fundamental Transaction had this Warrant been exercised immediately prior to such Fundamental Transaction; provided, however, that in the event the Fundamental Transaction involves the issuance of cash or freely
tradable securities by an issuer listed on the New York Stock Exchange or the Nasdaq Stock Market, then the ability to exercise this Warrant shall expire on the consummation of that Fundamental Transaction. Provision made pursuant to the preceding
sentence shall be in a form and substance reasonably satisfactory to the Required Holders. The provisions of this Section 3.3 shall apply similarly and equally to successive Fundamental Transactions and Corporate Events and shall be
applied without regard to any limitations on the exercise of this Warrant. 
 3.4 Notwithstanding the foregoing
Section 3.3, in the event of a Fundamental Transaction (other than one in which the Successor Entity is (i) The Quercus Trust or an Affiliate thereof, or (ii) a Public Successor Entity that assumes this Warrant such that this
Warrant shall be exercisable for the publicly traded common stock of such Public Successor Entity), at the request of the Holder delivered before the 90th day after the effective date of such Fundamental Transaction, the Company (or the Successor
Entity) shall purchase this Warrant from the Holder by paying to the Holder, within five (5) Trading Days after such request (or, if later, on the effective date of the Fundamental Transaction), cash in an amount equal to the value of the
remaining unexercised portion of this Warrant on the date of such consummation, which value shall be determined by use of the Black Scholes Option Pricing Model using a volatility equal to the 100 day average historical price volatility prior to the
date of the public announcement of such Fundamental Transaction. 

  
 9 

 ARTICLE 4  

NONCIRCUMVENTION 
 The Company hereby covenants and agrees that the Company will not, by amendment of its certificate or articles of incorporation, articles of association, bylaws, or any other organization documents, or
through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement, dissolution, issue or sale of securities, or any other voluntary action, 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. 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 any portion of this Warrant remains 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, 110% of the number of shares of Common Stock as shall from time to time be necessary to effect the exercise of this Warrant then
outstanding (without regard to any limitations on exercise). 
 ARTICLE 5  

WARRANT HOLDER NOT DEEMED A STOCKHOLDER 
 Except as otherwise specifically provided herein, 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 liabilities on the Holder to purchase any securities (upon exercise of this Warrant or otherwise) or as a stockholder of the Company, whether such liabilities are asserted by the Company or by creditors of the Company. Notwithstanding
this ARTICLE 5, the Company shall provide the Holder with copies of the same notices and other information given to the stockholders of the Company generally, contemporaneously with the giving thereof to the stockholders. 

  
 10 

 ARTICLE 6  

REISSUANCE OF WARRANTS 
 6.1 Transfer of Warrant. If this Warrant is to be transferred, the Holder shall surrender this Warrant to the Company, whereupon the Company will forthwith issue and deliver upon the
order of the Holder a new Warrant (in accordance with Section 6.4), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by the Holder and, if less then the total number
of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 6.4) to the Holder representing the right to purchase the number of Warrant Shares not being transferred. 

6.2 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 6.4) representing the right to purchase the Warrant Shares then underlying this Warrant. 

6.3 Exchangeable for Multiple Warrant. This Warrant is exchangeable, upon the surrender hereof by the Holder at the
principal office of the Company, for a new Warrant or Warrants (in accordance with Section 6.4) 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 Warrant for fractional shares of Common Stock shall be given. 

6.4 Issuance of New Warrant. 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 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 or Section 6.3, the Warrant Shares designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrant 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. 
 ARTICLE 7  

NOTICES 
 Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance with Section 6.2 of the Purchase Agreement. 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 

  
 11 

 
therefore. Without limiting the generality of the foregoing, the Company will give written notice to the Holder (i) immediately upon any adjustment of the Exercise Price, setting forth in
reasonable detail, and certifying, the calculation of such adjustment and (ii) at least fifteen 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 Options, Convertible Securities or rights to purchase stock, warrants, securities or other property to holders of shares of Common Stock as such 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. 
 ARTICLE 8  
 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 Required Holders;
provided that except as set forth in this Warrant no such action may increase the exercise price of any Warrant or decrease the number of shares or class of stock obtainable upon exercise of any Warrant without the written consent of the
Holder. No such amendment shall be effective to the extent that it applies to less than all of the holders of this Warrant. 

ARTICLE 9  
 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. 

ARTICLE 10  
 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.

 ARTICLE 11  
 DISPUTE RESOLUTION 
 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 submit the disputed determinations or 

  
 12 

 
arithmetic calculations via facsimile within 2 Trading Days of receipt of the Exercise Notice giving rise to such dispute, as the case may be, to the Holder. If the Holder and the Company are
unable to agree upon such determination or calculation of the Exercise Price or the Warrant Shares within three Trading Days of such disputed determination or arithmetic calculation being submitted to the Holder, then the Company shall, within 2
Trading Days submit via facsimile (a) the disputed determination of the Exercise Price or arithmetic calculation to an independent, reputable investment bank or independent registered public accounting firm selected by Holder subject to
Company’s approval, which may not be unreasonably withheld or delayed, or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent registered public accounting firm. The Company shall cause at its
expense the investment bank or the accountant, as the case may be, to perform the determinations or calculations and notify the Company and the Holder of the results no later than 3 Trading Days from the time it receives the disputed determinations
or calculations. Such investment bank’s or accountant’s determination or calculation, as the case may be, shall be binding upon all parties absent demonstrable error. 
 ARTICLE 12  
 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 right 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. 
 ARTICLE 13  

DEFINITIONS 
 For purposes of this Warrant, in addition to the terms defined elsewhere herein, the following terms shall have the following meanings: 

13.1 “Bloomberg” means Bloomberg Financial Markets. 

13.2 “Closing Bid Price” means, for any security as of any date, the last closing bid price for such security on
the Trading Market, as reported by Bloomberg, or, if the Trading Market begins to operate on an extended hours basis and does not designate the closing bid price, then the last bid price of such security prior to 4:00 p.m., Eastern time, as reported
by Bloomberg, or, if the Trading Market is not the principal securities exchange or trading market for such security, the last closing bid price 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 of such security in the over-the-counter market 

  
 13 

 
on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price is reported for such security by Bloomberg, the average of the bid prices 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 cannot be calculated for a security on a particular date on any of the foregoing bases,
the Closing Bid Price of such security on such date shall be the fair market value as mutually determined by the Company and Holder. If the Company and Holder are unable to agree upon the fair market value of such security, then such dispute shall
be resolved pursuant to ARTICLE 11. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during the applicable calculation period. 

13.3 “Common Stock” means (i) the Company’s shares of Common Stock, par value $0.001 per share, and
(ii) any share capital into which such Common Stock shall have been changed or any share capital resulting from a reclassification of such Common Stock. 
 13.4 “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
deemed to be outstanding pursuant to Section 3.1 hereof regardless of whether the Options or Convertible Securities are actually exercisable at such time, but excluding any shares of Common Stock owned or held by or for the account of
the Company or issuable upon exercise of this Warrant. 
 13.5 “Common Stock Equivalents” means
any securities of the Company or the Subsidiaries which would entitle the holder thereof to acquire at any time Common Stock, including, without limitation, any debt, preferred stock, rights, options, warrants or other instrument that is at any time
convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock. 

13.6 “Convertible Securities” means any stock or securities (other than Options) directly or indirectly
convertible into or exercisable or exchangeable for shares of Common Stock. 
 13.7 “DWAC Shares”
means all Warrant Shares issued or issuable to Holder or any Affiliate, successor or assign of Holder pursuant to this Warrant, all of which shall be (a) issued in electronic form, (b) freely tradable and without restriction on resale, and
(c) timely credited by Company to the specified Deposit/Withdrawal at Custodian (DWAC) account with DTC under its Fast Automated Securities Transfer (FAST) Program or any similar program hereafter adopted by DTC performing substantially the
same function, in accordance with instructions issued to and countersigned by the Transfer Agent of the Company.  

13.8 “Eligible Market” means the Trading Market, The New York Stock Exchange, Inc., The NASDAQ Global Select
Market, The NASDAQ Global Market, The NASDAQ Capital Market, the NYSE Amex or the OTC Bulletin Board, but does not include the Pink Sheets. 

  
 14 

 13.9 “Exempt Issuance” means the issuance of (a) shares of
Common Stock or options to employees, officers, or directors of the Company pursuant to any stock or option plan duly adopted for such purpose, by a majority of the non-employee members of the Board of Directors or a majority of the members of a
committee of non-employee directors established for such purpose, (b) securities upon the exercise or exchange of or conversion of any Securities issued hereunder and/or other securities exercisable or exchangeable for or convertible into
shares of Common Stock issued and outstanding on the date of this Agreement, provided that such securities have not been amended since the date of this Agreement to increase the number of such securities or to decrease the exercise price, exchange
price or conversion price of such securities (except as a result of anti-dilution provisions therein), (c) securities issued pursuant to acquisitions or strategic transactions approved by a majority of the disinterested directors of the
Company, provided that any such issuance shall only be to a Person (or to the equity holders of a Person) which is, itself or through its subsidiaries, an operating company or an asset in a business synergistic with the business of the Company and
shall provide to the Company additional benefits in addition to the investment of funds, but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to an entity whose primary
business is investing in securities, and (d) up to $3,500,000 in Common Stock that may be issued to The Quercus Trust and/or its Affiliates and/or any other holders of Common Stock of the Company.  

13.10 “Fundamental Transaction” has the meaning set forth in the Purchase Agreement. 

13.11 “Maximum Placement” has the meaning set forth in the Purchase Agreement. 

13.12 “Options” means any rights, warrants or options to subscribe for or purchase shares of Common Stock or
Convertible Securities. 
 13.13 “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. 
 13.14
“Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity and a government or any department or agency thereof.

 13.15 “Public Successor Entity” means a Successor Entity that is a publicly traded corporation
whose stock is quoted or listed for trading on an Eligible Market. 
 13.16 “Required Holders”
means the Holders of this Warrant representing at least a majority of shares of Common Stock underlying this Warrant as then outstanding. 
 13.17 “Successor Entity” means the Person (or, if so elected by the Required Holders, the Parent Entity) formed by, resulting from or surviving any Fundamental Transaction or the
Person (or, if so elected by the Required Holders, the Parent Entity) with which such Fundamental Transaction shall have been entered into. 

  
 15 

 13.18 “Trading Day” means any day on which the Common Stock is
traded on an Eligible Market; provided that it shall not include any day on which the Common Stock (a) is suspended from trading, or (b) is scheduled to trade on such exchange or market for less than 5 hours. 

13.19 “Trading Market” means the OTC Bulletin Board, the NASDAQ Capital Market, the NASDAQ Global Market, the
NASDAQ Global Select Market, the NYSE Amex, or the New York Stock Exchange, whichever is at the time the principal trading exchange or market for the Common Stock, but does not include the Pink Sheets inter-dealer electronic quotation and trading
system. 
 13.20 “Tranche Closing Date” has the meaning set forth in the Purchase Agreement.

 13.21 “Tranche Notice” has the meaning set forth in the Purchase Agreement. 

13.22 “Tranche Notice Date” has the meaning set forth in the Purchase Agreement. 

13.23 “Tranche Purchase Price” has the meaning set forth in the Purchase Agreement. 

  
 16 

 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. 
  

			
	ENTECH SOLAR, INC.
		
	By:	 	 /s/ Shelley Hollingsworth

	 Name:
	 	 Shelley Hollingsworth

	 Title:
	 	 CFO and Treasurer

 Acknowledged and agreed: 
 SOCIUS CG II, LTD. 

 

			
	By:	 	 /s/ Terren Peizer

	 Name:
	 	 Terren Peizer

	 Title:
	 	 Managing Director

 DRAFT 
 Warrant Exercise Schedule 
  

																	
	 Exercise Date
	  	Number of
Warrant Shares	 	  	Exercise Price
Per Share	 	  	Aggregate Exercise
Price	 	  	Dollar Amount
Remaining	 
		  				  				  				  			
		  				  				  				  			
		  				  				  				  			

  
 Exhibit A

 2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00182-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00182-of-00352.parquet"}]]