Document:

Form of Class A Warrant

 EXECUTION COPY 
 Exhibit 10.16 
 CLASS A WARRANT 
 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISEABLE 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 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, IN A FORM REASONABLY ACCEPTABLE TO THE COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR THE SECURITIES MAY BE 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. 
 DAYSTAR TECHNOLOGIES, INC. 
 WARRANT TO PURCHASE COMMON
STOCK 
 Warrant No.: A-001 
 Number of Shares
of Common Stock: 782,609 (subject to adjustment) 
 Date of Issuance: May 25, 2006 (“Issuance Date”) 
 DayStar Technologies, Inc., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, CASTLERIGG MASTER INVESTMENTS LTD., the registered holder hereof or its permitted assigns (the “Holder”), is entitled, subject to the terms set forth below, to purchase from
the Company, at the Exercise Price (as defined below) then in effect, upon surrender of this Warrant to Purchase Common Stock (including any Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof, the
“Warrant”), at any time or times on or after November 25, 2006, but not after 11:59 p.m., New York Time, on the Expiration Date (as defined below), Seven Hundred Eighty Two Thousand Six Hundred Nine (782,609), subject to
adjustment as provided herein, duly authorized, validly issued, fully paid and nonassessable shares of Common Stock (as defined below) (the “Warrant Shares”). Except as otherwise defined herein, capitalized terms in this Warrant
shall have the meanings set forth in Section 16. This Warrant is the Class A Warrant to Purchase Common Stock, together with the Class B Warrant to Purchase Common Stock (collectively, the “SPA Warrants”), issued
pursuant to Section 1 of that certain Securities Purchase Agreement, dated as of May 25, 2006 (the “Subscription Date”), by and between the Company and the investor (the “Buyer”) referred to therein (the
“Securities Purchase Agreement”). 

 1. EXERCISE OF WARRANT. 
 (a) Mechanics of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth in
Section 1(f)), this Warrant may be exercised by the Holder on any day on or after November 25, 2006, in whole or in part, by (i) delivery of a written notice, in the form attached hereto as Exhibit A (the “Exercise
Notice”), of the Holder’s election to exercise this Warrant and (ii) (A) payment to the Company of an amount equal to the applicable Exercise Price multiplied by the number of Warrant Shares as to which this Warrant is being
exercised (the “Aggregate Exercise Price”) in cash or by wire transfer of immediately available funds or (B) by notifying the Company that this Warrant is being exercised pursuant to a Cashless Exercise (as defined in
Section 1(d)). The Exercise Notice shall include notification to the Company of any restriction upon issuances to the Holder pursuant to Section 1(f)(i) hereof of which the Holder is aware. The Holder shall not be required to deliver the
original Warrant in order to effect an exercise hereunder. Execution and delivery of the Exercise Notice with respect to less than all of the Warrant Shares shall have the same effect as cancellation of the original Warrant and issuance of a new
Warrant evidencing the right to purchase the remaining number of Warrant Shares. On or before the first Business Day following the date on which the Company has received each of the Exercise Notice and the Aggregate Exercise Price (or notice of a
Cashless Exercise) (the “Exercise Delivery Documents”), the Company shall transmit by facsimile an acknowledgment of confirmation of receipt of the Exercise Delivery Documents to the Holder and the Company’s transfer agent (the
“Transfer Agent”). On or before the third Business Day following the date on which the Company has received all of the Exercise Delivery Documents (the “Share Delivery Date”), the Company shall (X) provided
that the Transfer Agent is participating in The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program, upon the request of the Holder, credit such aggregate number of shares of Common Stock to which the Holder
is entitled pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through its Deposit Withdrawal Agent Commission system, or (Y) if the Transfer Agent is not participating in the DTC Fast Automated
Securities Transfer Program, issue and dispatch by overnight courier to the address as specified in the Exercise Notice, a certificate, registered in the Company’s share register in the name of the Holder or its designee, for the number of
shares of Common Stock to which the Holder is entitled pursuant to such exercise. Upon delivery of the Exercise Notice and Aggregate Exercise Price referred to in clause (ii)(A) above or notification to the Company of a Cashless Exercise referred to
in Section 1(d), 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 of delivery of the certificates
evidencing such Warrant Shares. If this Warrant is submitted in connection with any exercise pursuant to this Section 1(a) and the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant
Shares being acquired upon an exercise, then the Company shall as soon as practicable and in no event later than three (3) Business Days after any exercise and at its own expense, issue a new Warrant (in accordance with Section 7(d))
representing the right to purchase the number of Warrant Shares purchasable immediately prior to such exercise under this Warrant, less the number of Warrant Shares with respect to which this Warrant is exercised. No fractional shares of Common
Stock 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 

  

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payable with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. 
 (b) Exercise Price. For purposes of this Warrant, “Exercise Price” means $12.65, subject to adjustment as provided
herein. 
 (c) Company’s Failure to Timely Deliver Securities. If the Company shall fail for any reason or for no
reason to issue to the Holder within three (3) Business Days of receipt of the Exercise Delivery Documents, a certificate for the number of shares of Common Stock to which the Holder is entitled and register such shares of Common Stock on the
Company’s share register or to credit the Holder’s balance account with DTC for such number of shares of Common Stock to which the Holder is entitled upon the Holder’s exercise of this Warrant, and if on or after such Business Day the
Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of shares of Common Stock issuable upon such exercise that the Holder anticipated receiving from the Company (a
“Buy-In”), then, in addition to all other remedies available to the Holder, the Company shall, within three (3) Business Days after the Holder’s request and in the Holder’s discretion, either (i) pay cash to the
Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased (the “Buy-In Price”), at which point the Company’s obligation to deliver
such certificate (and to issue such shares of Common Stock) shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such shares of Common Stock and pay cash to the Holder in an
amount equal to the excess (if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) the Closing Bid Price on the date of exercise. 
 (d) Cashless Exercise. Notwithstanding anything contained herein to the contrary, if a Registration Statement (as defined in the
Registration Rights Agreement) covering the Warrant Shares that are the subject of the Exercise Notice (the “Unavailable Warrant Shares”) is not available for the resale of such 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 = (A x B) - (A x C) 
 B  
 For purposes of the foregoing formula: 
  

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

  

	 	B =	the Closing Sale Price of the shares of Common Stock (as reported by Bloomberg) on the date immediately preceding the date of the Exercise Notice. 

  

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

 (e) 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 13. 
 (f) Limitations on Exercises; Beneficial Ownership; Principal Market Regulation. 
 (i) The Company shall not effect the exercise of this Warrant, and the Holder shall not have the right to exercise this Warrant, to the extent that after
giving effect to such exercise, such Person (together with such Person’s affiliates) would beneficially own (directly or indirectly through Warrant Shares or otherwise) in the aggregate, including all shares of stock of the Company issued to
the Holder in connection with the Transaction Documents, in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing
sentence, the aggregate number of shares of Common Stock beneficially owned (directly or indirectly through Warrant Shares or otherwise) by such Person and its affiliates shall include the number of shares of Common Stock issuable upon exercise of
this Warrant with respect to which the determination of such sentence is being made, but shall exclude shares of Common Stock which would be issuable upon (i) exercise of the remaining, unexercised portion of this Warrant beneficially owned by
such Person and its affiliates and (ii) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such Person and its affiliates (including, without limitation, any convertible
notes or convertible preferred stock or warrants) subject to a limitation on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this subsection, beneficial ownership
shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended. For purposes of this Warrant, in determining the number of outstanding shares of Common Stock, the Holder may rely on the number of
outstanding shares of Common Stock as reflected in (1) the Company’s most recent Form 10-K, Form 10-KSB, Form 10-Q, Form 10-QSB, Current Report on Form 8-K or other public filing with the Securities and Exchange Commission, as
the case may be, (2) a more recent public announcement by the Company or (3) any other notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. For any reason at any time, upon the written
or oral request of the Holder, the Company shall within one (1) Business Day confirm orally and in writing to the Holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of Common 

  

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Stock shall be determined after giving effect to the conversion or exercise of securities of the Company, including the SPA Securities and the SPA Warrants,
by the Holder and its affiliates since the date as of which such number of outstanding shares of Common Stock was reported. By written notice to the Company, the Holder may increase or decrease the Maximum Percentage to any other percentage not in
excess of 9.99% specified in such notice; provided that (i) any such increase will not be effective until the sixty-first (61st) day after such notice is delivered to the Company, and (ii) any such increase or decrease will apply only to the Holder and not to any other holder of SPA Warrants. 
 (ii) Principal Market Regulation. The Company shall not be obligated to issue any shares of Common Stock upon exercise of this Warrant if the
issuance of such shares of Common Stock would exceed the aggregate number of shares of Common Stock which the Company may issue upon conversion, redemption or exercise, as applicable, of the SPA Securities and the SPA Warrants or otherwise without
breaching the Company’s obligations under the rules or regulations of the Principal Market (the number if shares which may be issued without violating such rules and regulations, the “Exchange Cap”), except that such limitation
shall not apply in the event that the Company (A) obtains the approval of its stockholders as required by the applicable rules of the Principal Market for issuances of shares of Common Stock in excess of such amount or (B) obtains a
written opinion from outside counsel to the Company that such approval is not required, which opinion shall be reasonably satisfactory to the Holder. Unless and until such approval or written opinion is obtained, the Holder shall not be issued, upon
exercise or conversion, as applicable, of any SPA Warrants or SPA Securities, shares of Common Stock in an amount greater than the Exchange Cap. In the event that the Holder shall sell or otherwise transfer any of the SPA Warrants, the transferee
shall be allocated a pro rata portion of the Exchange Cap, and the restrictions of the prior sentence shall apply to such transferee with respect to the portion of the Exchange Cap allocated to such transferee (the “Exchange Cap
Allocation”). In the event that any holder of SPA Warrants shall exercise all of such holder’s SPA Warrants into a number of shares of Common Stock which, in the aggregate, is less than such holder’s Exchange Cap Allocation, then
the difference between such holder’s Exchange Cap Allocation and the number of shares of Common Stock actually issued to such holder shall be allocated to the respective Exchange Cap Allocations of the remaining holders of SPA Warrants on a pro
rata basis in proportion to the shares of Common Stock underlying the SPA Warrants then held by each such holder. 
 (g)
Insufficient Authorized Shares. If at any time while 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

  

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exercise of this Warrant at least a number of shares of Common Stock equal to 130% (the “Required Reserve Amount”) of the number of shares
of Common Stock as shall from time to time be necessary to effect the exercise of all of the Warrants then outstanding, without regard to any limitations on exercise (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 Warrants 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 ninety (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. 
 2. ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES. The Exercise Price and the number of Warrant Shares shall be adjusted from time to
time as follows: 
 (a) Adjustment upon Issuance of shares of Common Stock. If and whenever on or after the
Subscription Date (subject to Section 2(a)(vi)), the Company issues or sells, or in accordance with this Section 2 is deemed to have issued or sold, any shares of Common Stock (including the issuance or sale of shares of Common Stock owned
or held by or for the account of the Company, but excluding shares of Common Stock deemed to have been issued by the Company in connection with any Excluded Securities (as defined in the SPA Securities) for a consideration per share (the
“New Issuance Price”) less than a price (the “Applicable Price”) equal to the Exercise Price in effect immediately prior to such issue or sale or deemed issuance or sale (the foregoing a “Dilutive
Issuance”), then immediately after such Dilutive Issuance, the Exercise Price then in effect shall be reduced to an amount equal to the New Issuance Price. In no event shall a Dilutive Issuance cause an adjustment to the number of Warrant
Shares. For purposes of determining the adjusted Exercise Price under this Section 2(a), the following shall be applicable: 
 (i)
Issuance of Options. If the Company in any manner grants any Options, other than Excluded Securities, and the lowest price per share for which one share of Common Stock is issuable upon the exercise of any such Option or upon conversion,
exercise or exchange of any Convertible Securities issuable upon exercise of any such Option is less than the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued and sold by the Company at the
time of the granting or sale of such Option for such price per share. For purposes of this Section 2(a)(i), the “lowest price per share for which one share of Common Stock is issuable upon the exercise of such Option or upon conversion,
exercise or exchange of any Convertible Securities” shall be equal to the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to any one share of Common Stock upon the granting or sale of the
Option, upon exercise of 

  

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the Option and upon conversion, exercise or exchange of any Convertible Security issuable upon exercise of such Option. No further adjustment of the Exercise
Price shall be made upon the actual issuance of such shares of Common Stock or of such Convertible Securities upon the exercise of such Options or upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such
Convertible Securities. 
 (ii) Issuance of Convertible Securities. If the Company in any manner issues or sells any Convertible
Securities, other than Excluded Securities, and the lowest price per share for which one share of Common Stock is issuable upon the conversion, exercise or exchange thereof is less than the Applicable Price, then such share of Common Stock shall be
deemed to be outstanding and to have been issued and sold by the Company at the time of the issuance or sale of such Convertible Securities for such price per share. For the purposes of this Section 2(a)(ii), the “lowest price per share
for which one share of Common Stock is issuable upon the conversion, exercise or exchange” shall be equal to the sum of the lowest amounts of consideration (if any) received or receivable by the Company with respect to one share of Common Stock
upon the issuance or sale of the Convertible Security and upon conversion, exercise or exchange of such Convertible Security. No further adjustment of the Exercise Price shall be made upon the actual issuance of such shares of Common Stock upon
conversion, exercise or exchange of such Convertible Securities, and if any such issue or sale of such Convertible Securities is made upon exercise of any Options for which adjustment of this Warrant has been or is to be made pursuant to other
provisions of this Section 2(a), no further adjustment of the Exercise Price shall be made by reason of such issue or sale. 
 (iii)
Change in Option Price or Rate of Conversion. If the purchase price provided for in any Options, other than Excluded Securities, the additional consideration, if any, payable upon the issue, conversion, exercise or exchange of any Convertible
Securities, or the rate at which any Convertible Securities are convertible into or exercisable or exchangeable for shares of Common Stock increases or decreases at any time, the Exercise Price in effect at the time of such increase or decrease
shall be adjusted to the Exercise Price which would have been in effect at such time had such Options or Convertible Securities provided for such increased or decreased purchase price, additional consideration or increased or decreased conversion
rate, as the case may be, at the time initially granted, issued or sold. For purposes of this Section 2(a)(iii), if the terms of any Option or Convertible Security that was outstanding as of the date of issuance of this Warrant, other than
Excluded Securities, are increased or decreased in the manner described in the immediately preceding sentence, then such Option or Convertible Security and the shares of Common Stock deemed issuable upon exercise, conversion or exchange thereof
shall be deemed to have been issued as of the date of 

  

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such increase or decrease. No adjustment pursuant to this Section 2(a)(iii) shall be made if such adjustment would result in an increase of the Exercise
Price then in effect. 
 (iv) Calculation of Consideration Received. In case any Option is issued in connection with the issue or sale
of other securities of the Company, together comprising one integrated transaction in which no specific consideration is allocated to such Options by the parties thereto, the Options will be deemed to have been issued for a consideration of $0.01.
If any shares of Common Stock, Options or Convertible Securities are issued or sold or deemed to have been issued or sold for cash, the consideration received therefor will be deemed to be the net amount received by the Company therefor. If any
shares of Common Stock, Options or Convertible Securities are issued or sold for a consideration other than cash, the amount of such consideration received by the Company will be the fair value of such consideration, except where such consideration
consists of securities, in which case the amount of consideration received by the Company will be the Closing Sale Price of such security on the date of receipt. If any shares of Common Stock, Options or Convertible Securities are issued to the
owners of the non-surviving entity in connection with any merger in which the Company is the surviving entity, the amount of consideration therefor will be deemed to be the fair value of such portion of the net assets and business of the
non-surviving entity as is attributable to such shares of Common Stock, Options or Convertible Securities, as the case may be. The fair value of any consideration other than cash or securities will be determined jointly by the Company and the
Holder. If such parties are unable to reach agreement within ten (10) days after the occurrence of an event requiring valuation (the “Valuation Event”), the fair value of such consideration will be determined within five
(5) Business Days after the tenth day following the Valuation Event by an independent, reputable appraiser jointly selected by the Company and the Holder. The determination of such appraiser shall be final and binding upon all parties absent
manifest error and the fees and expenses of such appraiser shall be borne by the Company. 
 (v) Record Date. If the Company takes a
record of the holders of shares of Common Stock for the purpose of entitling them (A) to receive a dividend or other distribution payable in shares of Common Stock, Options or in Convertible Securities or (B) to subscribe for or purchase
shares of Common Stock, Options or Convertible Securities, then such record date will be deemed to be the date of the issue or sale of the shares of Common Stock deemed to have been issued or sold upon the declaration of such dividend or the making
of such other distribution or the date of the granting of such right of subscription or purchase, as the case may be. 
  

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 (vi) Termination of Right to Adjustment for Dilutive Issuances. No adjustments to the Exercise
Price shall be made pursuant to this Section 2(a) at any time after the Closing Sale Price of the Company’s Common Stock exceeds two (2) times the original Exercise Price hereof (subject to adjustment for stock splits, combinations
and like events) for any ninety (90) consecutive trading days. 
 (b) Adjustment upon Subdivision or Combination of
shares of Common Stock. If the Company at any time on or after the Subscription 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 Subscription 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 Section 2(b) shall become effective at the close of business on the date the subdivision or combination becomes effective. 
 (c) Adjustment for Issuance of Inducement Warrants. If the Company issues warrants (the “Inducement Warrants”) to
holders of the Company’s publicly traded, registered Class Z Warrants (DSTIZ) pursuant to a Soft Call of Warrants (as defined in the Securities Purchase Agreement) and the Inducement Warrants have an exercise price per share of Common Stock of
less than $22 per share, then the Exercise Price then in effect shall be reduced by an amount equal to the difference between $22 and the per share exercise price of the Inducement Warrants; provided, however, that if such difference
is less than $1.00, then no adjustment shall be made to the Exercise Price. The dollar amounts set forth in this paragraph shall be adjusted upon any stock splits, combinations and like events. 
 (d) Other Events. If any event occurs of the type contemplated by the provisions of this Section 2 but not expressly provided
for by such provisions (including, without limitation, the granting of stock appreciation rights, phantom stock rights or other rights with equity features), then the Company’s Board of Directors will make an appropriate adjustment in the
Exercise Price and the number of Warrant Shares so as to protect the rights of the Holder; provided that no such adjustment pursuant to this Section 2(d) will increase the Exercise Price or decrease the number of Warrant Shares as otherwise
determined pursuant to this Section 2. 
 3. RIGHTS UPON DISTRIBUTION OF ASSETS. If the Company shall declare or make any
dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of capital or otherwise (including, without limitation, any distribution of cash, stock or other securities,
property or options by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time after the issuance of this Warrant, then, in each
such case: 
 (a) any Exercise Price in effect immediately prior to the close of business on the record date fixed for the
determination of holders of shares of Common Stock entitled to receive the Distribution shall be reduced, effective as of the close of business on such record date, to a price determined by multiplying such Exercise Price by a fraction of which
(i) the numerator shall be the Closing Bid Price of the shares of Common Stock on the trading day immediately preceding such record date minus the value of the Distribution (as determined reasonably in good faith by the Company’s Board of
Directors) applicable to one share of Common Stock, and (ii) the denominator shall be the Closing Bid Price of the shares of Common Stock on the trading day immediately preceding such record date; and 
  

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 (b) the number of Warrant Shares shall be increased to a number of shares equal to the
number of shares of Common Stock obtainable immediately prior to the close of business on the record date fixed for the determination of holders of shares of Common Stock entitled to receive the Distribution multiplied by the reciprocal of the
fraction set forth in the immediately preceding paragraph (a); provided, that in the event that the Distribution is of shares of Common Stock (or common stock) (“Other Shares of Common Stock”) of a company whose common shares
are traded on a national securities exchange or a national automated quotation system, then the Holder may elect to receive a warrant to purchase Other Shares of Common Stock in lieu of an increase in the number of Warrant Shares, the terms of which
shall be identical to those of this Warrant, except that such warrant shall be exercisable into the number of shares of Other Shares of Common Stock that would have been payable to the Holder pursuant to the Distribution had the Holder exercised
this Warrant immediately prior to such record date and with an aggregate exercise price equal to the product of the amount by which the exercise price of this Warrant was decreased with respect to the Distribution pursuant to the terms of the
immediately preceding paragraph (a) and the number of Warrant Shares calculated in accordance with the first part of this paragraph (b). 
 4. PURCHASE RIGHTS; FUNDAMENTAL TRANSACTIONS. 
 (a) Purchase Rights. In addition to any adjustments
pursuant to Section 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”), other than Excluded Securities, 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. 
 (b) Fundamental Transactions. If the Company enters into or is party to a Fundamental Transaction, then the Holder shall have the
right to either (A) purchase and receive upon the basis and upon the terms and conditions herein specified and in lieu of the Warrant Shares immediately theretofore issuable upon exercise of the Warrant, such shares of stock, securities or
assets (including cash) as would have been issuable or payable with respect to or in exchange for a number of Warrant Shares equal to the number of Warrant Shares 

  

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immediately theretofore issuable upon exercise of the Warrant, had such Fundamental Transaction not taken place or (B) require the repurchase of this
Warrant for a purchase price, payable in cash within five (5) Business Days after such request, equal to the Black Scholes Value of the remaining unexercised portion of this Warrant on the date of such request. The terms of any agreement
pursuant to which a Fundamental Transaction is effected shall include terms requiring any such successor or surviving entity and Holder to comply with the provisions of this Section 4(b). The provisions of this Section shall apply
similarly and equally to successive Fundamental Transactions and shall be applied without regard to any limitations on the exercise of this Warrant. 
 5. NONCIRCUMVENTION. The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of Incorporation, Bylaws 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 this Warrant is outstanding, take all action necessary to reserve and keep available out of its authorized and unissued shares of Common Stock, solely for the purpose of
effecting the exercise of the SPA Warrants, 130% of the number of shares of Common Stock as shall from time to time be necessary to effect the exercise of the SPA Warrants then outstanding (without regard to any limitations on exercise). 

6. 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 shareholder 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 shareholder of the Company,
whether such liabilities are asserted by the Company or by creditors of the Company. Notwithstanding this Section 6, the Company shall provide the Holder with copies of the same notices and other information given to the shareholders of the
Company generally, contemporaneously with the giving thereof to the shareholders. 
  

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 7. REISSUANCE OF WARRANTS. 
 (a) 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 7(d)), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred
by the Holder and, if less then the total number of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 7(d)) to the Holder representing the right to purchase the number of Warrant Shares
not being transferred. In accordance with Section 15 hereof, without the consent of the Company, any transfer of this Warrant to a Competitor of the Company shall be void ab inito and of no effect. 
 (b) Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the Company of the loss,
theft, destruction or mutilation of this Warrant, and, in the case of loss, theft or destruction, of any indemnification undertaking by the Holder to the Company in customary form and, in the case of mutilation, upon surrender and cancellation of
this Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 7(d)) representing the right to purchase the Warrant Shares then underlying this Warrant. 
 (c) Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal
office of the Company, for a new Warrant or Warrants (in accordance with Section 7(d)) representing in the aggregate the right to purchase the number of Warrant Shares then underlying this Warrant, and each such new Warrant will represent the
right to purchase such portion of such Warrant Shares as is designated by the Holder at the time of such surrender; provided, however, that no Warrants for fractional shares of Common Stock shall be given. 
 (d) Issuance of New Warrants. Whenever the Company is required to issue a new Warrant pursuant to the terms of this Warrant, such
new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant, the right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being
issued pursuant to Section 7(a) or Section 7(c), the Warrant Shares designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrants issued in connection with such issuance, does not
exceed the number of Warrant Shares then underlying this Warrant), (iii) shall have an issuance date, as indicated on the face of such new Warrant which is the same as the Issuance Date and (iv) shall have the same rights and conditions as
this Warrant. 
 8. NOTICES. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice
shall be given in accordance with Section 9(f) of the Securities 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 therefor. 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 or the number of Warrant Shares, 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 

  

 - 12 - 

 
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 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. 
 9. AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant may be amended and the Company may take any action
herein prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent of the Holder. 
 10. SEVERABILITY. If any provision of this Warrant or the application thereof becomes or is declared by a court of competent jurisdiction to be illegal, void or unenforceable, the remainder of the terms of this
Warrant will continue in full force and effect. 
 11. GOVERNING LAW. This Warrant shall be governed by and construed and enforced in
accordance with, and all questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any choice of law or conflict of law
provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. 
 12. HEADINGS. The headings of this Warrant are for convenience of reference only and shall not form part of, or affect the interpretation of, this
Warrant. 
 13. DISPUTE RESOLUTION. In the case of a dispute as to the determination of the Exercise Price or the arithmetic
calculation of the Warrant Shares, the Company shall submit the disputed determinations or arithmetic calculations via facsimile within three (3) Business 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 five (5) Business Days of such disputed determination or arithmetic calculation being
submitted to the Holder, then the Company shall, within two Business Days submit via facsimile (a) the disputed determination of the Exercise Price to an independent, reputable investment bank selected by the Company and approved by the Holder
or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant. The Company shall cause 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 ten (10) Business Days from the time it receives the disputed determinations or calculations. The costs and expenses of the investment bank or the accountant, as
the case may be, shall be borne equally by the Company and the Holder. Such investment bank’s or accountant’s determination or calculation, as the case may be, shall be binding upon all parties absent demonstrable error. 
  

 - 13 - 

 14. REMEDIES, OTHER OBLIGATIONS, BREACHES AND INJUNCTIVE RELIEF. The remedies provided in this
Warrant shall be cumulative and in addition to all other remedies available under this Warrant and the other Transaction Documents, at law or in equity (including a decree of specific performance and/or other injunctive relief), and nothing herein
shall limit the right of the Holder to pursue actual damages for any failure by the Company to comply with the terms of this Warrant. The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to the Holder
and that the remedy at law for any such breach may be inadequate. The Company therefore agrees that, in the event of any such breach or threatened breach, the holder of this Warrant shall be entitled, in addition to all other available remedies, to
an injunction restraining any breach, without the necessity of showing economic loss and without any bond or other security being required. 
 15. TRANSFER. Subject to compliance with applicable securities laws, this Warrant may be offered for sale, sold, transferred or assigned without the consent of the Company, except as may otherwise be required by Section 2(f) of
the Securities Purchase Agreement, provided, however, that, without the consent of the Company, no transfer of the Warrant may be made to a Competitor of the Company. 
 16. CERTAIN DEFINITIONS. For purposes of this Warrant, the following terms shall have the following meanings: 
 (a) “Black Scholes Value” means the value of this Warrant based on the Black and Scholes Option Pricing Model obtained
from the “OV” function on Bloomberg determined as of the day immediately following the public announcement of the applicable Fundamental Transaction and reflecting (i) a risk-free interest rate corresponding to the U.S. Treasury rate
for a period equal to the remaining term of this Warrant as of such date of request and (ii) an expected volatility equal to the greater of 60-80% and the 100 day volatility obtained from the HVT function on Bloomberg. 
 (b) “Bloomberg” means Bloomberg Financial Markets. 
 (c) “Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New
York are authorized or required by law to remain closed. 
 (d) “Closing Bid Price” and “Closing Sale
Price” means, for any security as of any date, the last closing bid price and last closing trade price, respectively, for such security on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an
extended hours basis and does not designate the closing bid price or the closing trade price, as the case may be, then the last bid price or last trade price, respectively, of such security prior to 4:00:00 p.m., New York Time, as reported by
Bloomberg, or, if the Principal Market is not the principal securities exchange or trading market for such security, the last closing bid price or last trade price, respectively, of such security on the principal securities exchange or trading
market where such security is listed or traded as reported by Bloomberg, or if the foregoing do not apply, the last closing bid price or last trade price, respectively, of such security in the over-the-counter market on the electronic bulletin board
for such security as reported by Bloomberg, or, if no closing bid price or last trade price, respectively, is reported for such security by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for such
security as reported in the “pink sheets” by Pink Sheets LLC (formerly 

  

 - 14 - 

 
the National Quotation Bureau, Inc.). If the Closing Bid Price or the Closing Sale Price cannot be calculated for a security on a particular date on any of
the foregoing bases, the Closing Bid Price or the Closing Sale Price, as the case may be, of such security on such date shall be the fair market value as mutually determined by the Company and the Holder. If the Company and the Holder are unable to
agree upon the fair market value of such security, then such dispute shall be resolved pursuant to Section 13. All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination or other similar
transaction during the applicable calculation period. 
 (e) “Common Stock” means (i) the Company’s
shares of Common Stock, $0.01 par value 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. 
 (f) “Competitor” means any person engaged in the research, development, manufacturing, sales, distribution, re-selling,
packaging, either directly or indirectly of photovoltaic energy technologies. 
 (g) “Convertible Securities”
means any stock or securities (other than Options) directly or indirectly convertible into or exercisable or exchangeable for shares of Common Stock. 
 (h) “Expiration Date” means the date sixty months after the Issuance Date or, if such date falls on a day other than a Business Day or on which trading does not take place on the Principal Market (a
“Holiday”), the next date that is not a Holiday. 
 (i) “Fundamental Transaction” means that
the Company shall, directly or indirectly, in one or more related transactions, (i) consolidate or merge with or into (whether or not the Company is the surviving corporation) another Person, or (ii) sell, assign, transfer, convey or
otherwise dispose of all or substantially all of the properties or assets of the Company to another Person, or (iii) become subject to a purchase, tender or exchange offer by another Person that is accepted by the holders of more than the 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
(iv) consummate a stock purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with another Person whereby such other Person acquires more than the
50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock purchase
agreement or other business combination), (v) reorganize, recapitalize or reclassify its Common Stock or (vi) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the
Securities Exchange Act of 1934) is or shall become the “beneficial owner” (as defined in Rule 13d-3 under the Securities Exchange Act of 1934), directly or indirectly, of 50% or more of the aggregate voting stock of the Company.

 (j) “Options” means any rights, warrants or options to subscribe for or purchase shares of Common Stock or
Convertible Securities. 
  

 - 15 - 

 (k) “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. 
 (l) “Principal Market” means the NASDAQ Capital Market. 
 (m) “Registration Rights Agreement” means that certain registration rights agreement by and between the Company and the
Buyer. 
 (n) “SPA Securities” means the Note issued pursuant to the Securities Purchase Agreement.

 (o) “Transaction Documents” has the meaning specified in the Securities Purchase Agreement. 
 [Signature Page Follows] 
  

 - 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. 
  

			
	DAYSTAR TECHNOLOGIES, INC.
		
	By:	 	/s/ John R. Tuttle
	Name:	 	John R. Tuttle
	Title:	 	Chief Executive Officer

 EXHIBIT A 
 EXERCISE NOTICE 
 TO BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS 
 WARRANT TO PURCHASE COMMON STOCK 
 DAYSTAR TECHNOLOGIES, INC. 
 The undersigned holder hereby exercises the right to purchase _________________ of the shares
of Common Stock (“Warrant Shares”) of DayStar Technologies, Inc., a Delaware corporation (the “Company”), evidenced by the attached Warrant to Purchase Common Stock (the “Warrant”). Capitalized
terms used herein and not otherwise defined shall have the respective meanings set forth in the Warrant. 
 1. Form of Exercise Price.
The Holder intends that payment of the Exercise Price shall be made as: 
 ____________ a “Cash Exercise”
with respect to _________________ Warrant Shares; and/or 
 ____________ a “Cashless Exercise” with respect
to _______________ Warrant Shares. 
 2. Payment of Exercise Price. In the event that the holder has elected a Cash Exercise with
respect to some or all of the Warrant Shares to be issued pursuant hereto, the holder shall pay the Aggregate Exercise Price in the sum of $___________________ to the Company in accordance with the terms of the Warrant. 
 3. Delivery of Warrant Shares. The Company shall deliver to the holder __________ Warrant Shares in accordance with the terms of the Warrant.

 4. Restrictions. Any restriction upon issuances to the Holder pursuant to Section 1(f)(i) of the Warrant of which the Holder
is aware: ________________________________________ 
 Date: _______________ __, ______ 
  

	
	
	   
	 Name of Registered Holder

  

			
		
	By:	 	  
		 	 Name:

		 	 Title:

 ACKNOWLEDGMENT 
 The Company hereby acknowledges this Exercise Notice and hereby directs U.S. Stock Transfer Corporation to issue the above indicated number of shares of Common Stock in accordance with the Transfer Agent Instructions
dated May 25, 2006 from the Company and acknowledged and agreed to by U.S. Stock Transfer Corporation. 
  

			
	DAYSTAR TECHNOLOGIES, INC.
		
	By:	 	  
		 	Name:
		 	Title:Form of Class B Warrant

 EXECUTION COPY 
 Exhibit 10.17 
 CLASS B WARRANT 
 NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISEABLE 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 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, IN A FORM REASONABLY ACCEPTABLE TO THE COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR THE SECURITIES MAY BE 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. 
 DAYSTAR TECHNOLOGIES, INC. 
 WARRANT TO PURCHASE COMMON
STOCK 
 Warrant No.: B-001 
 Number of Shares of Common Stock: 550,725 (subject to adjustment) 
 Date of Issuance: May 25, 2006 (“Issuance Date”) 
 DayStar Technologies, Inc., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, CASTLERIGG MASTER INVESTMENTS LTD., the registered holder hereof or its permitted assigns (the “Holder”), is entitled, subject to the terms set forth below, to purchase from
the Company, at the Exercise Price (as defined below) then in effect, upon surrender of this Warrant to Purchase Common Stock (including any Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof, the
“Warrant”), at any time or times on or after November 25, 2006, but not after 11:59 p.m., New York Time, on the Expiration Date (as defined below), 550,725, subject to adjustment as provided herein, duly authorized, validly
issued, fully paid and nonassessable shares of Common Stock (as defined below) (the “Warrant Shares”). Except as otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in Section 16. This
Warrant is the Class B Warrant to Purchase Common Stock, together with the Class A Warrant to Purchase Common Stock (the “Class A Warrant” and collectively, the “SPA Warrants”), issued pursuant to
Section 1 of that certain Securities Purchase Agreement, dated as of May 25, 2006 (the “Subscription Date”), by and between the Company and the investor (the “Buyer”) referred to therein (the
“Securities Purchase Agreement”). 

 1. EXERCISE OF WARRANT. 
 (a) Mechanics of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth in
Section 1(f)), this Warrant may be exercised by the Holder on any day on or after November 25, 2006, in whole or in part, by (i) delivery of a written notice, in the form attached hereto as Exhibit A (the “Exercise
Notice”), of the Holder’s election to exercise this Warrant and (ii) (A) payment to the Company of an amount equal to the applicable Exercise Price multiplied by the number of Warrant Shares as to which this Warrant is being
exercised (the “Aggregate Exercise Price”) in cash or by wire transfer of immediately available funds or (B) by notifying the Company that this Warrant is being exercised pursuant to a Cashless Exercise (as defined in
Section 1(d)). The Exercise Notice shall include notification to the Company of any restriction upon issuances to the Holder pursuant to Section 1(f)(i) hereof of which the Holder is aware. The Holder shall not be required to deliver the
original Warrant in order to effect an exercise hereunder. Execution and delivery of the Exercise Notice with respect to less than all of the Warrant Shares shall have the same effect as cancellation of the original Warrant and issuance of a new
Warrant evidencing the right to purchase the remaining number of Warrant Shares. On or before the first Business Day following the date on which the Company has received each of the Exercise Notice and the Aggregate Exercise Price (or notice of a
Cashless Exercise) (the “Exercise Delivery Documents”), the Company shall transmit by facsimile an acknowledgment of confirmation of receipt of the Exercise Delivery Documents to the Holder and the Company’s transfer agent (the
“Transfer Agent”). On or before the third Business Day following the date on which the Company has received all of the Exercise Delivery Documents (the “Share Delivery Date”), the Company shall (X) provided
that the Transfer Agent is participating in The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program, upon the request of the Holder, credit such aggregate number of shares of Common Stock to which the Holder
is entitled pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through its Deposit Withdrawal Agent Commission system, or (Y) if the Transfer Agent is not participating in the DTC Fast Automated
Securities Transfer Program, issue and dispatch by overnight courier to the address as specified in the Exercise Notice, a certificate, registered in the Company’s share register in the name of the Holder or its designee, for the number of
shares of Common Stock to which the Holder is entitled pursuant to such exercise. Upon delivery of the Exercise Notice and Aggregate Exercise Price referred to in clause (ii)(A) above or notification to the Company of a Cashless Exercise referred to
in Section 1(d), 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 of delivery of the certificates
evidencing such Warrant Shares. If this Warrant is submitted in connection with any exercise pursuant to this Section 1(a) and the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant
Shares being acquired upon an exercise, then the Company shall as soon as practicable and in no event later than three (3) Business Days after any exercise and at its own expense, issue a new Warrant (in accordance with Section 7(d))
representing the right to purchase the number of Warrant Shares purchasable immediately prior to such exercise under this Warrant, less the number of Warrant Shares with respect to which this Warrant is exercised. No fractional shares of Common
Stock 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 

  

 - 2 - 

 
Warrant. No more than the Maximum Eligibility Number of Warrant Shares shall be exercisable hereunder. For purposes hereof, “Maximum Eligibility
Number” means initially zero and shall be increased each time that the Company elects a Mandatory Conversion (as defined in the SPA Securities) pursuant to the SPA Securities, as of the date of the Mandatory Conversion (the “Mandatory
Conversion Date”), by an amount equal to sixty percent (60%) of the quotient of (x) the Conversion Amount of such Mandatory Conversion divided by (y) the arithmetic average of the Weighted Average Price of the Common Stock on each of the five
(5) consecutive Trading Days immediately preceding the Mandatory Conversion Notice Date (as each such capitalized term is defined in the other Transaction Documents). 
 (b) Exercise Price. For purposes of this Warrant, “Exercise Price” means $17.25, subject to adjustment as provided
herein. 
 (c) Company’s Failure to Timely Deliver Securities. If the Company shall fail for any reason or for no
reason to issue to the Holder within three (3) Business Days of receipt of the Exercise Delivery Documents, a certificate for the number of shares of Common Stock to which the Holder is entitled and register such shares of Common Stock on the
Company’s share register or to credit the Holder’s balance account with DTC for such number of shares of Common Stock to which the Holder is entitled upon the Holder’s exercise of this Warrant, and if on or after such Business Day the
Holder purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the Holder of shares of Common Stock issuable upon such exercise that the Holder anticipated receiving from the Company (a
“Buy-In”), then, in addition to all other remedies available to the Holder, the Company shall, within three (3) Business Days after the Holder’s request and in the Holder’s discretion, either (i) pay cash to the
Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased (the “Buy-In Price”), at which point the Company’s obligation to deliver
such certificate (and to issue such shares of Common Stock) shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such shares of Common Stock and pay cash to the Holder in an
amount equal to the excess (if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) the Closing Bid Price on the date of exercise. 
 (d) Cashless Exercise. Notwithstanding anything contained herein to the contrary, after the Mandatory Conversion Date, if a
Registration Statement (as defined in the Registration Rights Agreement) covering the Warrant Shares that are the subject of the Exercise Notice (the “Unavailable Warrant Shares”) is not available for the resale of such 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 = (A x B)-(A x C) 
         B 
  

 - 3 - 

 For purposes of the foregoing formula: 
  

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

  

	 	B=	the Closing Sale Price of the shares of Common Stock (as reported by Bloomberg) 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. 

 (e) 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 13. 
 (f) Limitations on Exercises; Beneficial Ownership; Principal Market Regulation. 
 (i) The Company shall not effect the exercise of this Warrant, and the Holder shall not have the right to exercise this Warrant, to the extent that after
giving effect to such exercise, such Person (together with such Person’s affiliates) would beneficially own (directly or indirectly through Warrant Shares or otherwise) in the aggregate, including all shares of stock of the Company issued to
the Holder in connection with the Transaction Documents, in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing
sentence, the aggregate number of shares of Common Stock beneficially owned (directly or indirectly through Warrant Shares or otherwise) by such Person and its affiliates shall include the number of shares of Common Stock issuable upon exercise of
this Warrant with respect to which the determination of such sentence is being made, but shall exclude shares of Common Stock which would be issuable upon (i) exercise of the remaining, unexercised portion of this Warrant beneficially owned by
such Person and its affiliates and (ii) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such Person and its affiliates (including, without limitation, any convertible
notes or convertible preferred stock or warrants) subject to a limitation on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this subsection, beneficial ownership
shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended. For purposes of this Warrant, in determining the number of outstanding shares of Common Stock, the Holder may rely on the number of
outstanding shares of Common Stock as reflected in (1) the Company’s most recent Form 10-K, Form 10-KSB, Form 10-Q, Form 10-QSB, Current Report on 

  

 - 4 - 

 
Form 8-K or other public filing with the Securities and Exchange Commission, as the case may be, (2) a more recent public announcement by the Company or
(3) any other notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. For any reason at any time, upon the written or oral request of the Holder, the Company shall within one (1) Business
Day confirm orally and in writing to the Holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of Common Stock shall be determined after giving effect to the conversion or exercise of securities
of the Company, including the SPA Securities and the SPA Warrants, by the Holder and its affiliates since the date as of which such number of outstanding shares of Common Stock was reported. By written notice to the Company, the Holder may increase
or decrease the Maximum Percentage to any other percentage not in excess of 9.99% specified in such notice; provided that (i) any such increase will not be effective until the sixty-first (61st) day after such notice is delivered to the Company, and (ii) any such increase or decrease will apply only to the Holder and not to any other holder
of SPA Warrants. 
 (ii) Principal Market Regulation. The Company shall not be obligated to issue any shares of Common Stock upon
exercise of this Warrant if the issuance of such shares of Common Stock would exceed the aggregate number of shares of Common Stock which the Company may issue upon conversion, redemption or exercise, as applicable, of the SPA Securities and the SPA
Warrants or otherwise without breaching the Company’s obligations under the rules or regulations of the Principal Market (the number if shares which may be issued without violating such rules and regulations, the “Exchange
Cap”), except that such limitation shall not apply in the event that the Company (A) obtains the approval of its stockholders as required by the applicable rules of the Principal Market for issuances of shares of Common Stock in excess
of such amount or (B) obtains a written opinion from outside counsel to the Company that such approval is not required, which opinion shall be reasonably satisfactory to the Holder. Unless and until such approval or written opinion is obtained,
the Holder shall not be issued, upon exercise or conversion, as applicable, of any SPA Warrants or SPA Securities, shares of Common Stock in an amount greater than the Exchange Cap. In the event that the Holder shall sell or otherwise transfer any
of the SPA Warrants, the transferee shall be allocated a pro rata portion of the Exchange Cap, and the restrictions of the prior sentence shall apply to such transferee with respect to the portion of the Exchange Cap allocated to such transferee
(the “Exchange Cap Allocation”). In the event that any holder of SPA Warrants shall exercise all of such holder’s SPA Warrants into a number of shares of Common Stock which, in the aggregate, is less than such holder’s
Exchange Cap Allocation, then the difference between such holder’s Exchange Cap Allocation and the number of shares of Common Stock actually issued to such holder shall be 

  

 - 5 - 

 
allocated to the respective Exchange Cap Allocations of the remaining holders of SPA Warrants on a pro rata basis in proportion to the shares of Common Stock
underlying the SPA Warrants then held by each such holder. 
 (g) Insufficient Authorized Shares. If at any time while
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 130% (the “Required Reserve Amount”) of the number of shares of Common Stock as shall from time to time be necessary to effect the exercise of all of the Warrants then outstanding, without regard to any limitations on
exercise (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 Warrants 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 ninety
(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. 
 2. ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES. The Exercise Price and
the number of Warrant Shares shall be adjusted from time to time as follows: 
 (a) Adjustment upon Issuance of shares of
Common Stock. If and whenever on or after the Subscription Date (subject to Section 2(a)(vi)), the Company issues or sells, or in accordance with this Section 2 is deemed to have issued or sold, any shares of Common Stock (including
the issuance or sale of shares of Common Stock owned or held by or for the account of the Company, but excluding shares of Common Stock deemed to have been issued by the Company in connection with any Excluded Securities (as defined in the SPA
Securities) for a consideration per share (the “New Issuance Price”) less than a price (the “Applicable Price”) equal to the Exercise Price in effect immediately prior to such issue or sale or deemed issuance or
sale (the foregoing a “Dilutive Issuance”), then immediately after such Dilutive Issuance, the Exercise Price then in effect shall be reduced to an amount equal to 150% of the Conversion Price (as defined in the SPA Securities). In
no event shall a Dilutive Issuance cause an adjustment to the number of Warrant Shares. For purposes of determining the adjusted Exercise Price under this Section 2(a), the following shall be applicable: 
 (i) Issuance of Options. If the Company in any manner grants any Options, other than Excluded Securities, and the lowest price per share for which
one share of Common Stock is issuable upon the exercise of any such Option or upon conversion, exercise or exchange of any Convertible Securities issuable upon exercise of any such Option is less than the Applicable Price, then such share of Common
Stock shall be deemed to be 

  

 - 6 - 

 
outstanding and to have been issued and sold by the Company at the time of the granting or sale of such Option for such price per share. For purposes of this
Section 2(a)(i), the “lowest price per share for which one share of Common Stock is issuable upon the exercise of such Option or upon conversion, exercise or exchange of any Convertible Securities” shall be equal to the sum of the
lowest amounts of consideration (if any) received or receivable by the Company with respect to any one share of Common Stock upon the granting or sale of the Option, upon exercise of the Option and upon conversion, exercise or exchange of any
Convertible Security issuable upon exercise of such Option. No further adjustment of the Exercise Price shall be made upon the actual issuance of such shares of Common Stock or of such Convertible Securities upon the exercise of such Options or upon
the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities. 
 (ii) Issuance
of Convertible Securities. If the Company in any manner issues or sells any Convertible Securities, other than Excluded Securities, and the lowest price per share for which one share of Common Stock is issuable upon the conversion, exercise or
exchange thereof is less than the Applicable Price, then such share of Common Stock shall be deemed to be outstanding and to have been issued and sold by the Company at the time of the issuance or sale of such Convertible Securities for such price
per share. For the purposes of this Section 2(a)(ii), the “lowest price per share for which one share of Common Stock is issuable upon the conversion, exercise or exchange” shall be equal to the sum of the lowest amounts of
consideration (if any) received or receivable by the Company with respect to one share of Common Stock upon the issuance or sale of the Convertible Security and upon conversion, exercise or exchange of such Convertible Security. No further
adjustment of the Exercise Price shall be made upon the actual issuance of such shares of Common Stock upon conversion, exercise or exchange of such Convertible Securities, and if any such issue or sale of such Convertible Securities is made upon
exercise of any Options for which adjustment of this Warrant has been or is to be made pursuant to other provisions of this Section 2(a), no further adjustment of the Exercise Price shall be made by reason of such issue or sale. 
 (iii) Change in Option Price or Rate of Conversion. If the purchase price provided for in any Options, other than Excluded Securities, the
additional consideration, if any, payable upon the issue, conversion, exercise or exchange of any Convertible Securities, or the rate at which any Convertible Securities are convertible into or exercisable or exchangeable for shares of Common Stock
increases or decreases at any time, the Exercise Price in effect at the time of such increase or decrease shall be adjusted to the Exercise Price which would have been in effect at such time had such Options or Convertible Securities provided for
such increased or decreased purchase price, additional consideration or 

  

 - 7 - 

 
increased or decreased conversion rate, as the case may be, at the time initially granted, issued or sold. For purposes of this Section 2(a)(iii), if
the terms of any Option or Convertible Security that was outstanding as of the date of issuance of this Warrant, other than Excluded Securities, are increased or decreased in the manner described in the immediately preceding sentence, then such
Option or Convertible Security and the shares of Common Stock deemed issuable upon exercise, conversion or exchange thereof shall be deemed to have been issued as of the date of such increase or decrease. No adjustment pursuant to this
Section 2(a)(iii) shall be made if such adjustment would result in an increase of the Exercise Price then in effect. 
 (iv)
Calculation of Consideration Received. In case any Option is issued in connection with the issue or sale of other securities of the Company, together comprising one integrated transaction in which no specific consideration is allocated to
such Options by the parties thereto, the Options will be deemed to have been issued for a consideration of $0.01. If any shares of Common Stock, Options or Convertible Securities are issued or sold or deemed to have been issued or sold for cash, the
consideration received therefor will be deemed to be the net amount received by the Company therefor. If any shares of Common Stock, Options or Convertible Securities are issued or sold for a consideration other than cash, the amount of such
consideration received by the Company will be the fair value of such consideration, except where such consideration consists of securities, in which case the amount of consideration received by the Company will be the Closing Sale Price of such
security on the date of receipt. If any shares of Common Stock, Options or Convertible Securities are issued to the owners of the non-surviving entity in connection with any merger in which the Company is the surviving entity, the amount of
consideration therefor will be deemed to be the fair value of such portion of the net assets and business of the non-surviving entity as is attributable to such shares of Common Stock, Options or Convertible Securities, as the case may be. The fair
value of any consideration other than cash or securities will be determined jointly by the Company and the Holder. If such parties are unable to reach agreement within ten (10) days after the occurrence of an event requiring valuation (the
“Valuation Event”), the fair value of such consideration will be determined within five (5) Business Days after the tenth day following the Valuation Event by an independent, reputable appraiser jointly selected by the Company
and the Holder. The determination of such appraiser shall be final and binding upon all parties absent manifest error and the fees and expenses of such appraiser shall be borne by the Company. 
 (v) Record Date. If the Company takes a record of the holders of shares of Common Stock for the purpose of entitling them (A) to receive a
dividend or other distribution payable in shares of Common Stock, 

  

 - 8 - 

 
Options or in Convertible Securities or (B) to subscribe for or purchase shares of Common Stock, Options or Convertible Securities, then such record
date will be deemed to be the date of the issue or sale of the shares of Common Stock deemed to have been issued or sold upon the declaration of such dividend or the making of such other distribution or the date of the granting of such right of
subscription or purchase, as the case may be. 
 (vi) Termination of Right to Adjustment for Dilutive Issuances. No adjustments to the
Exercise Price shall be made pursuant to this Section 2(a) at any time after the Closing Sale Price of the Company’s Common Stock exceeds two (2) times the original Exercise Price hereof (subject to adjustment for stock splits,
combinations and like events) for any ninety (90) consecutive trading days. 
 (b) Adjustment upon Subdivision or
Combination of shares of Common Stock. If the Company at any time on or after the Subscription 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
Subscription 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 Section 2(b) shall become effective at the close of business on the date the subdivision or combination becomes effective.

 (c) Adjustment for Issuance of Inducement Warrants. If the Company issues warrants (the “Inducement
Warrants”) to holders of the Company’s publicly traded, registered Class Z Warrants (DSTIZ) pursuant to a Soft Call of Warrants (as defined in the Securities Purchase Agreement) and the Inducement Warrants have an exercise price per
share of Common Stock of less than $22 per share, then the Exercise Price then in effect shall be reduced by an amount equal to the difference between $22 and the per share exercise price of the Inducement Warrants; provided, however,
that if such difference is less than $1.00, then no adjustment shall be made to the Exercise Price. The dollar amounts set forth in this paragraph shall be adjusted upon any stock splits, combinations and like events. 
 (d) Other Events. If, at any time after the Mandatory Conversion Date, any event occurs of the type contemplated by the provisions
of this Section 2 but not expressly provided for by such provisions (including, without limitation, the granting of stock appreciation rights, phantom stock rights or other rights with equity features), then the Company’s Board of
Directors will make an appropriate adjustment in the Exercise Price and the number of Warrant Shares so as to protect the rights of the Holder; provided that no such adjustment pursuant to this Section 2(d) will increase the Exercise Price or
decrease the number of Warrant Shares as otherwise determined pursuant to this Section 2. 
  

 - 9 - 

 3. RIGHTS UPON DISTRIBUTION OF ASSETS. If the Company shall, at any time after the Mandatory
Conversion Date, declare or make any dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of capital or otherwise (including, without limitation, any distribution of
cash, stock or other securities, property or options by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time after the issuance
of this Warrant, then, in each such case: 
 (a) any Exercise Price in effect immediately prior to the close of business on
the record date fixed for the determination of holders of shares of Common Stock entitled to receive the Distribution shall be reduced, effective as of the close of business on such record date, to a price determined by multiplying such Exercise
Price by a fraction of which (i) the numerator shall be the Closing Bid Price of the shares of Common Stock on the trading day immediately preceding such record date minus the value of the Distribution (as determined reasonably in good faith by
the Company’s Board of Directors) applicable to one share of Common Stock, and (ii) the denominator shall be the Closing Bid Price of the shares of Common Stock on the trading day immediately preceding such record date; and 
 (b) the number of Warrant Shares shall be increased to a number of shares equal to the number of shares of Common Stock obtainable
immediately prior to the close of business on the record date fixed for the determination of holders of shares of Common Stock entitled to receive the Distribution multiplied by the reciprocal of the fraction set forth in the immediately preceding
paragraph (a); provided, that in the event that the Distribution is of shares of Common Stock (or common stock) (“Other Shares of Common Stock”) of a company whose common shares are traded on a national securities exchange or
a national automated quotation system, then the Holder may elect to receive a warrant to purchase Other Shares of Common Stock in lieu of an increase in the number of Warrant Shares, the terms of which shall be identical to those of this Warrant,
except that such warrant shall be exercisable into the number of shares of Other Shares of Common Stock that would have been payable to the Holder pursuant to the Distribution had the Holder exercised this Warrant immediately prior to such record
date and with an aggregate exercise price equal to the product of the amount by which the exercise price of this Warrant was decreased with respect to the Distribution pursuant to the terms of the immediately preceding paragraph (a) and the
number of Warrant Shares calculated in accordance with the first part of this paragraph (b). 
 4. PURCHASE RIGHTS; FUNDAMENTAL
TRANSACTIONS. 
 (a) Purchase Rights. In addition to any adjustments pursuant to Section 2 above, if at any
time after the Mandatory Conversion Date, 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”), other than Excluded Securities, 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 

  

 - 10 - 

 
record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase Rights. 
 (b) Fundamental Transactions. If the Company, at any time after the Mandatory Conversion Date, enters into or is party to a
Fundamental Transaction, then the Holder shall have the right to either (A) purchase and receive upon the basis and upon the terms and conditions herein specified and in lieu of the Warrant Shares immediately theretofore issuable upon exercise
of the Warrant, such shares of stock, securities or assets (including cash) as would have been issuable or payable with respect to or in exchange for a number of Warrant Shares equal to the number of Warrant Shares immediately theretofore issuable
upon exercise of the Warrant, had such Fundamental Transaction not taken place or (B) require the repurchase of this Warrant for a purchase price, payable in cash within five (5) Business Days after such request, equal to the Black Scholes
Value of the remaining unexercised portion of this Warrant on the date of such request. The terms of any agreement pursuant to which a Fundamental Transaction is effected shall include terms requiring any such successor or surviving entity and
Holder to comply with the provisions of this Section 4(b). The provisions of this Section shall apply similarly and equally to successive Fundamental Transactions and shall be applied without regard to any limitations on the exercise of
this Warrant. 
 5. NONCIRCUMVENTION. The Company hereby covenants and agrees that the Company will not, by amendment of its
Certificate of Incorporation, Bylaws 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 this Warrant is outstanding, take all action necessary to
reserve and keep available out of its authorized and unissued shares of Common Stock, solely for the purpose of effecting the exercise of the SPA Warrants, 130% of the number of shares of Common Stock as shall from time to time be necessary to
effect the exercise of the SPA Warrants then outstanding (without regard to any limitations on exercise). 
 6. 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 shareholder 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 

  

 - 11 - 

 
Holder to purchase any securities (upon exercise of this Warrant or otherwise) or as a shareholder of the Company, whether such liabilities are asserted by
the Company or by creditors of the Company. Notwithstanding this Section 6, the Company shall provide the Holder with copies of the same notices and other information given to the shareholders of the Company generally, contemporaneously with
the giving thereof to the shareholders. 
 7. REISSUANCE OF WARRANTS. 
 (a) 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 7(d)), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred
by the Holder and, if less then the total number of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 7(d)) to the Holder representing the right to purchase the number of Warrant Shares
not being transferred. In accordance with Section 15 hereof, without the consent of the Company, any transfer of this Warrant to a Competitor of the Company shall be void ab inito and of no effect. 
 (b) Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the Company of the loss,
theft, destruction or mutilation of this Warrant, and, in the case of loss, theft or destruction, of any indemnification undertaking by the Holder to the Company in customary form and, in the case of mutilation, upon surrender and cancellation of
this Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 7(d)) representing the right to purchase the Warrant Shares then underlying this Warrant. 
 (c) Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal
office of the Company, for a new Warrant or Warrants (in accordance with Section 7(d)) representing in the aggregate the right to purchase the number of Warrant Shares then underlying this Warrant, and each such new Warrant will represent the
right to purchase such portion of such Warrant Shares as is designated by the Holder at the time of such surrender; provided, however, that no Warrants for fractional shares of Common Stock shall be given. 
 (d) Issuance of New Warrants. Whenever the Company is required to issue a new Warrant pursuant to the terms of this Warrant, such
new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant, the right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being
issued pursuant to Section 7(a) or Section 7(c), the Warrant Shares designated by the Holder which, when added to the number of shares of Common Stock underlying the other new Warrants issued in connection with such issuance, does not
exceed the number of Warrant Shares then underlying this Warrant), (iii) shall have an issuance date, as indicated on the face of such new Warrant which is the same as the Issuance Date and (iv) shall have the same rights and conditions as
this Warrant. 
 8. NOTICES. Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice
shall be given in accordance with Section 9(f) of 

  

 - 12 - 

 
the Securities 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 therefor. 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 or the
number of Warrant Shares, 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 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. 
 9. AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant
may be amended and the Company may take any action herein prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent of the Holder. 
 10. SEVERABILITY. If any provision of this Warrant or the application thereof becomes or is declared by a court of competent jurisdiction to be
illegal, void or unenforceable, the remainder of the terms of this Warrant will continue in full force and effect. 
 11. GOVERNING
LAW. This Warrant shall be governed by and construed and enforced in accordance with, and all questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of
New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New
York. 
 12. HEADINGS. The headings of this Warrant are for convenience of reference only and shall not form part of, or affect the
interpretation of, this Warrant. 
 13. DISPUTE RESOLUTION. In the case of a dispute as to the determination of the Exercise Price or
the arithmetic calculation of the Warrant Shares, the Company shall submit the disputed determinations or arithmetic calculations via facsimile within three (3) Business 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 five (5) Business Days of such disputed determination or arithmetic
calculation being submitted to the Holder, then the Company shall, within two Business Days submit via facsimile (a) the disputed determination of the Exercise Price to an independent, reputable investment bank selected by the Company and
approved by the Holder or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant. The Company shall cause 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 ten (10) Business Days from the time it receives the disputed determinations or calculations. The costs and expenses of the investment 

  

 - 13 - 

 
bank or the accountant, as the case may be, shall be borne equally by the Company and the Holder. Such investment bank’s or accountant’s
determination or calculation, as the case may be, shall be binding upon all parties absent demonstrable error. 
 14. REMEDIES, OTHER
OBLIGATIONS, BREACHES AND INJUNCTIVE RELIEF. The remedies provided in this Warrant shall be cumulative and in addition to all other remedies available under this Warrant and the other Transaction Documents, at law or in equity (including a
decree of specific performance and/or other injunctive relief), and nothing herein shall limit the right of the Holder to pursue actual damages for any failure by the Company to comply with the terms of this Warrant. The Company acknowledges that a
breach by it of its obligations hereunder will cause irreparable harm to the Holder and that the remedy at law for any such breach may be inadequate. The Company therefore agrees that, in the event of any such breach or threatened breach, the holder
of this Warrant shall be entitled, in addition to all other available remedies, to an injunction restraining any breach, without the necessity of showing economic loss and without any bond or other security being required. 
 15. TRANSFER. Subject to compliance with applicable securities laws, this Warrant may be offered for sale, sold, transferred or assigned without
the consent of the Company, except as may otherwise be required by Section 2(f) of the Securities Purchase Agreement, provided, however, that, without the consent of the Company, no transfer of the Warrant may be made to a
Competitor of the Company. 
 16. CERTAIN DEFINITIONS. For purposes of this Warrant, the following terms shall have the following
meanings: 
 (a) “Black Scholes Value” means the value of this Warrant based on the Black and Scholes Option
Pricing Model obtained from the “OV” function on Bloomberg determined as of the day immediately following the public announcement of the applicable Fundamental Transaction and reflecting (i) a risk-free interest rate corresponding to
the U.S. Treasury rate for a period equal to the remaining term of this Warrant as of such date of request and (ii) an expected volatility equal to the greater of 60-80% and the 100 day volatility obtained from the HVT function on Bloomberg.

 (b) “Bloomberg” means Bloomberg Financial Markets. 
 (c) “Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New
York are authorized or required by law to remain closed. 
 (d) “Closing Bid Price” and “Closing Sale
Price” means, for any security as of any date, the last closing bid price and last closing trade price, respectively, for such security on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an
extended hours basis and does not designate the closing bid price or the closing trade price, as the case may be, then the last bid price or last trade price, respectively, of such security prior to 4:00:00 p.m., New York Time, as reported by
Bloomberg, or, if the Principal Market is not the principal securities exchange or trading market for such security, the last closing bid price or last trade price, respectively, of such security on the principal securities 

  

 - 14 - 

 
exchange or trading market where such security is listed or traded as reported by Bloomberg, or if the foregoing do not apply, the last closing bid price or
last trade price, respectively, of such security in the over-the-counter market on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price or last trade price, respectively, is reported for such security
by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for such security as reported in the “pink sheets” by Pink Sheets LLC (formerly the National Quotation Bureau, Inc.). If the Closing Bid
Price or the Closing Sale Price cannot be calculated for a security on a particular date on any of the foregoing bases, the Closing Bid Price or the Closing Sale Price, as the case may be, of such security on such date shall be the fair market value
as mutually determined by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then such dispute shall be resolved pursuant to Section 13. All such determinations to be
appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during the applicable calculation period. 
 (e) “Common Stock” means (i) the Company’s shares of Common Stock, $0.01 par value 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. 
 (f) “Competitor” means any person
engaged in the research, development, manufacturing, sales, distribution, re-selling, packaging, either directly or indirectly of photovoltaic energy technologies. 
 (g) “Convertible Securities” means any stock or securities (other than Options) directly or indirectly convertible into
or exercisable or exchangeable for shares of Common Stock. 
 (h) “Expiration Date” means the earlier of
(i) the date sixty months after the Issuance Date or, if such date falls on a day other than a Business Day or on which trading does not take place on the Principal Market (a “Holiday”), the next date that is not a Holiday, and
(ii) the date on which the Class A Warrant otherwise terminates. 
 (i) “Fundamental Transaction”
means that the Company shall, directly or indirectly, in one or more related transactions, (i) consolidate or merge with or into (whether or not the Company is the surviving corporation) another Person, or (ii) sell, assign, transfer,
convey or otherwise dispose of all or substantially all of the properties or assets of the Company to another Person, or (iii) become subject to a purchase, tender or exchange offer by another Person that is accepted by the holders of more than
the 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 (iv) consummate a stock purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with another Person whereby such other Person acquires more than
the 50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock purchase
agreement or other business combination), (v) reorganize, recapitalize or reclassify its Common Stock or (vi) any “person” or “group” 

  

 - 15 - 

 
(as these terms are used for purposes of Sections 13(d) and 14(d) of the Securities Exchange Act of 1934) is or shall become the “beneficial
owner” (as defined in Rule 13d-3 under the Securities Exchange Act of 1934), directly or indirectly, of 50% or more of the aggregate voting stock of the Company. 
 (j) “Options” means any rights, warrants or options to subscribe for or purchase shares of Common Stock or Convertible
Securities. 
 (k) “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. 
 (l) “Principal Market” means the NASDAQ Capital Market. 
 (m) “Registration Rights
Agreement” means that certain registration rights agreement by and between the Company and the Buyer. 
 (n)
“SPA Securities” means the Senior Convertible Note issued pursuant to the Securities Purchase Agreement. 
 (o) “Transaction Documents” has the meaning specified in the Securities Purchase Agreement. 
 [Signature Page
Follows] 
  

 - 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. 
  

			
	DAYSTAR TECHNOLOGIES, INC.
		
	 By:
	 	 /s/ John R. Tuttle

	 Name:
	 	 John R. Tuttle

	 Title:
	 	 Chief Executive Officer

 EXHIBIT A 
 EXERCISE NOTICE 
 TO BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS 
 WARRANT TO PURCHASE COMMON STOCK 
 DAYSTAR TECHNOLOGIES, INC. 
 The undersigned holder hereby exercises the right to purchase _________________ of the shares
of Common Stock (“Warrant Shares”) of DayStar Technologies, Inc., a Delaware corporation (the “Company”), evidenced by the attached Warrant to Purchase Common Stock (the “Warrant”). Capitalized
terms used herein and not otherwise defined shall have the respective meanings set forth in the Warrant. 
 1. Form of Exercise Price.
The Holder intends that payment of the Exercise Price shall be made as: 
 ____________ a “Cash Exercise”
with respect to _________________ Warrant Shares; and/or 
 ____________ a “Cashless Exercise” with respect
to _______________ Warrant Shares. 
 2. Payment of Exercise Price. In the event that the holder has elected a Cash Exercise with
respect to some or all of the Warrant Shares to be issued pursuant hereto, the holder shall pay the Aggregate Exercise Price in the sum of $___________________ to the Company in accordance with the terms of the Warrant. 
 3. Delivery of Warrant Shares. The Company shall deliver to the holder __________ Warrant Shares in accordance with the terms of the Warrant.

 4. Restrictions. Any restriction upon issuances to the Holder pursuant to Section 1(f)(i) of the Warrant of which the Holder
is aware: ________________________________________ 
 Date: _______________ __, ______ 
  

	
	
	   
	Name of Registered Holder

  

			
		
	By:	 	  
		 	Name:
		 	Title:

 ACKNOWLEDGMENT 
 The Company hereby acknowledges this Exercise Notice and hereby directs U.S. Stock Transfer Corporation to issue the above indicated number of shares of Common Stock in accordance with the Transfer Agent Instructions
dated May 25, 2006 from the Company and acknowledged and agreed to by U.S. Stock Transfer Corporation. 
  

			
	DAYSTAR TECHNOLOGIES, INC.
		
	 By:
	 	  
		 	 Name:

		 	 Title:

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