Document:

EX-10.49

 Exhibit 10.49 

SECOND AMENDMENT TO SUBLEASE 

THIS SECOND AMENDMENT TO SUBLEASE (this “Amendment”) is made and entered into as of the 16th day of January, 2014 (the
“Amendment Date”) by and -between MCKESSON SPECIALTY CARE DISTRIBUTION CORPORATION, a Delaware corporation (“Sublandlord”) and SUNESIS PHARMACEUTICALS, INC., a
Delaware Corporation (“Subtenant”). 
 RECITALS 

A. Sublandlord and Subtenant entered into that certain Commercial Sublease Agreement dated December 22, 2006, as amended by that certain
First Amendment to Sublease dated January 14, 2013 (as amended, the “Sublease”), for certain premises located at 395 Oyster Point Boulevard, South San Francisco, California containing approximately 15,378 rentable square feet
(the “Premises’’). 
 B. The current Term of the Prime Lease is scheduled to expire on February 28, 2014. 

C. The current Sublease Term is scheduled to expire on January 31, 2014. 

D. Subtenant and Prime Landlord have or will be entering into a lease agreement whereby Subtenant will lease the Premises directly from Prime
Landlord for a term commencing March 1, 2014 (the “Direct Lease”). 
 E. Sublandlord and Subtenant desire to extend the
Sublease Term by one (1) month so that no lapse will occur between the Sublease Term and the term of the Direct Lease. 
 NOW,
THEREFORE, in consideration of the Mutual covenants and conditions contained herein and of other good and valuable consideration, the, receipt and sufficiency of which, are hereby acknowledged, Sublandlord and Subtenant agree as follows: 

1. Recitals; Defined Terms. The parties acknowledge that the Recitals are an integral part of this Amendment and are incorporated herein
by this reference. Defined terms used herein but not defined shall have the same meaning ascribed to such term as in the Sublease. 
 2.
Sublease Term. The Sublease Term is hereby extended for a period of one (1) month (the-”Extended Period”) so that it shall expire on February 28, 2014. All terms
and conditions or the Sublease, including the amount and payment of rent, shall continue to be in effect for the Extended Period. 
 3.
Brokers. Except for CBRE, Inc. representing Sublandlord, Sublandlord and Subtenant each represents and warrants to the other that neither party has engaged or had any conversations or negotiations with any broker, finder or other third party
concerning the matters set forth in his Amendment who would be entitled to any commission or fee based on the execution of this Amendment. Sublandlord and Subtenant each hereby indemnifies the other 

 against and from any claims for any brokerage commissions and all costs, expenses and liabilities in connection
therewith, including, without limitation, reasonable attorneys’ fees and expenses, for any breach of the foregoing. The foregoing indemnification shall survive the termination of the Sublease for any reason. 

4. Miscellaneous. This Amendment shall be incorporated into and made a part of the Sublease, and all provisions of the Sublease not
expressly modified or amended hereby shall remain in full force and effect. As amended hereby, the Sublease is hereby ratified and confirmed. This Amendment to Sublease shall bind and inure to the benefit of the parties hereto and their respective
heirs, legal representatives, successors and assigns. This Amendment may be executed in multiple counterparts, each of which shall constitute an original and all of which when taken together shall constitute one and the same instrument. Furthermore,
the parties agree that this Amendment may be delivered by facsimile or electronic transmission and that delivery of an executed copy hereof by facsimile or electronic transmission shall constitute delivery or an original and shall be binding upon
the delivering party. 
 [Executions on following page] 

  
 2 

 IN WITNESS WHEREOF, the parties have executed this Amendment as of the date and year first above
written by their duly authorized representatives. 
  

			
	SUBLANDLORD:
	
	MCKESSON SPECIALTY CARE DISTRIBUTION CORPORATION, a Delaware corporation
		
	By:	 	 /s/ Jennifer Smith Webster

		 	Jennifer Smith Webster, Vice President and Treasurer
	  
 SUBTENANT:

 
 SUNESIS PHARMACEUTICALS, INC.,

a Delaware corporation

		
	By:	 	 /s/ Eric Bjerkholt

	 Name: Eric Bjerkholt
 Title:
EVP & CFO

  
 3EX-10.1

 Exhibit 10.1 

FIRST AMENDMENT TO 

SECOND AMENDED AND RESTATED 

SENIOR OFFICER EMPLOYMENT AGREEMENT 

THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED SENIOR OFFICER EMPLOYMENT AGREEMENT (this “First Amendment”) is entered
into effective the 1st day of March, 2014, by and between The GEO Group, Inc., a Florida corporation (the “Company”) and Jorge A. Dominicis (the “Employee”). 

WITNESSETH: 

WHEREAS, the Company and the Employee (collectively, the “Parties”) have previously entered into that certain Amended and
Restated Senior Officer Employment Agreement effective as of December 17, 2008, and as amended by the First Amendment to Amended and Restated Senior Officer Employment Agreement, dated March 1, 2011 (collectively, the “Prior
Employment Agreement”), which set forth the Parties’ rights and obligations with respect to Employee’s employment with the Company; 

WHEREAS, the Employee and the Company amended and restated the Prior Employment agreement and entered into that certain Second Amended
and Restated Senior Officer Employment Agreement (the “Employment Agreement”), dated December 31, 2012; 
 WHEREAS,
the Employee has also entered into that certain Employment Agreement (the “GEO Care Employment Agreement”), dated December 31, 2012, with GEO Care, LLC (“GEO Care”), a Florida limited liability company; 

WHEREAS, the Employee is presently dually employed by the Company under the Employment Agreement, holding the position of Senior Vice
President of Community Services; and by GEO Care, under the GEO Care Employment Agreement, holding the position of President; 

WHEREAS, the Employee’s combined annual 2014 salary as an employee of the Company and of GEO Care is $530,450.00 ($22,102.08 paid
bi-monthly); 
 WHEREAS, Employee is leaving his employment with the Company on an amicable basis and has agreed to continue
providing services to the Company during a two (2) month transition period (the “Transition Period”) beginning on the date hereof. 

NOW THEREFORE, in consideration of the premises, mutual agreements and covenants set forth herein and for other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the Parties hereto agree as follows: 
 1. Position and
Duties. During the Transition Period, the Employee shall retain his current title, position, and duties with the Company, as set forth in the Employment Agreement. 

2. Transition Period. 
  

	 	a.	During the first month of the Transition Period, the Employee shall devote 40% of his business time to his employment with the Company. Accordingly, beginning on the first day of the Transition Period, the Employee
shall be compensated by the Company at the rate of $8,840.83 bi-monthly, which represents 40% of the Employee’s current combined 2014 bi-monthly compensation. 

  
 1 

	 	b.	During the second month of the Transition Period, the Employee shall devote 25% of his business time to his employment with the Company. Accordingly, during the second month of the Transition Period, the Employee shall
be compensated by the Company at the rate of $5,525.52 bi-monthly, which represents 25% of the Employee’s current combined 2014 bi-monthly compensation. 

3. Termination. At the conclusion of the Transition Period, the Employment Agreement and the Employee’s employment with the
Company shall terminate, and the Employee and the Company shall enter into an independent contractor arrangement whereby the Employee will be a consultant for the Company, on terms previously agreed upon by the Parties. 

Except as otherwise specifically amended herein, the terms and provisions of the Employment Agreement remain in full force and effect. This
First Amendment may be executed in counterparts. 
 [Signature page follows.] 

  
 2 

 IN WITNESS WHEREOF, the parties have duly executed this First Amendment on the date first written
hereinabove. 
  

			
	 THE GEO GROUP, INC.:

		
	By:	 	/s/ George C. Zoley
	Name: George C. Zoley
	 Title: Chairman and CEO

		 	
	 EMPLOYEE:

		
	By:	 	/s/ Jorge A. Dominicis
	Name: Jorge A. Dominicis
	
		 	

  
 3EX-4.01

 Exhibit 4.01 

FORM OF WARRANT 

NEITHER THIS WARRANT NOR ANY OF THE SECURITIES ISSUABLE HEREUNDER HAVE BEEN REGISTERED UNDER THE SECURITIES ACT (AS DEFINED BELOW), OR APPLICABLE STATE
SECURITIES LAWS, AND MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT, OR (B) AN OPINION OF COUNSEL, IN A GENERALLY
ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT (II) UNLESS SOLD OR TRANSFERRED TO A “QUALIFIED INSTITUTIONAL BUYER” WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT OR (III) UNLESS SOLD PURSUANT TO RULE 144 OR
RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THESE SECURITIES. 

GREENHUNTER RESOURCES, INC. 

COMMON STOCK WARRANT 

THIS CERTIFIES THAT, for value received, the Holder is entitled to purchase, and GreenHunter Resources, Inc., a Delaware corporation (the
“Company”), promises and agrees to sell and issue to the Holder, at any time, or from time to time, during the Exercise Period, up to
                    shares of Common Stock, par value $0.001 per share (the “Common Stock”), of the Company, at the Exercise Price,
subject to the provisions and upon the terms and conditions hereinafter set forth. This Warrant is one of the Unit Warrants issued in the Offering. 
 1.
Definitions of Certain Terms. In addition to the terms defined elsewhere in this Warrant, the following terms have the following meanings: 

(a) “Business Day” means a day on which banks are open for business in the city of New York. 

(b) “Commission” means the U.S. Securities and Exchange Commission. 

(c) “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated
thereunder. 
 (d) “Exercise Price” means the price at which the Holder may purchase one share of Common Stock upon exercise
of this Warrant as determined from time to time pursuant to the provisions hereof. The initial Exercise Price is $2.25 per share, subject to adjustment as provided herein. 

(e) “Expiration Date” means [•]. 

(f) “Holder” means a record holder of the Warrant or shares of Common Stock obtained or obtainable upon exercise of the
Warrant, as applicable. The initial Holder is [            ]. 
 (g)
“Issue Date” means [•], 2014. 
 (h) “Offering” shall mean the offering described in the Private
Offering Memorandum. 
 (i) “Private Offering Memorandum” means that certain Private Offering Memorandum provided by the
Company concerning the offering of the Units, as amended, restated and/or supplemented from time to time. 
 (j) “Subscription
Agreement” means that certain Subscription Agreement between the Company and the Holder. 
 (k) “Securities Act”
means the Securities Act of 1933, as amended. 

  
 Exhibit B Page 1 

 (l) “Unit” means a unit consisting of (i) up to $1,500,000 aggregate
principal amount of the Company’s 15.0% Unsecured Promissory Notes due 2014 and (ii) Warrants to purchase up to 133,333 shares of Common Stock, issued pursuant to the terms of the Subscription Agreement. 

(m) “Unit Warrants” means, collectively, the warrants issued to the investors in the Offering, as more fully described in the
Private Offering Memorandum and the Subscription Agreement. 
 (n) “Warrant” means this warrant and any warrant or warrants
hereafter issued as a consequence of the exercise or transfer of this warrant in whole or in part. 
 2. Exercise of Warrant. 

(a) Manner of Exercise. This Warrant may be exercised, in whole or in part, at any time or from time to time, during the period
commencing as of 9:30:01 a.m., New York time, on the Issue Date and ending as of 5:30 p.m., New York time, on the Expiration Date (the “Exercise Period”), for
                     fully paid and non-assessable shares of Common Stock (the “Warrant Shares”), for an exercise price per share
equal to the Exercise Price, by delivery to the Company at its headquarters, or at such other place as is designated in writing by the Company, of: 

(1) a duly executed Notice of Exercise, substantially in the form of Attachment I attached hereto and incorporated by reference herein;

 (2) this Warrant; and 
 (3)
payment of an amount in cash equal to the product of the Exercise Price multiplied by the number of Warrant Shares being purchased upon such exercise, with such payment being in the form of a wire transfer of funds to an account designated in
writing by the Company. 
 The date on which the Company receives the Notice of Exercise, this Warrant, and the Exercise Price payable with
respect to the Warrant Shares being purchased shall be deemed to be the date of exercise (the “Date of Exercise”). 
 (b)
Delivery of Certificates. Subject to the provisions below, upon receipt of the Notice of Exercise, the Company shall immediately instruct its transfer agent to prepare certificates for the Warrant Shares to be received by the Holder upon such
exercise. The Company shall, at its own cost and expense, cause the transfer agent to deliver such certificates to the Holder (or to such other nominee as may be designated by the Holder) within three Business Days following the Date of Exercise
(the “Delivery Period”). 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 as of the Date of Exercise, irrespective
of the date such certificates are actually delivered by the transfer agent to the Holder or are credited to the Holder’s Depository Trust Company (“DTC”) account, as the case may be. If fewer than all of the Warrant Shares
purchasable under the Warrant are purchased, the Company will, upon such partial exercise, execute and deliver to the Holder a new Warrant (dated as of the Issue Date), in the same form and tenor as this Warrant, evidencing that portion of the
Warrant not exercised. 
 (c) Delivery of Electronic Shares. In lieu of delivering physical certificates representing the Warrant
Shares issuable upon exercise (provided that the transfer agent is participating in the DTC Fast Automated Securities Transfer program and provided further that the Holder provides the transfer agent with information required in order to issue such
Warrant Shares to the Holder electronically), upon the request of the Holder as set forth in the Notice of Exercise, but only if the Warrant Shares may be issued without restrictive legends, the Company shall cause its transfer agent to
electronically transmit, within the Delivery Period, the Warrant Shares issuable upon exercise to the Holder by crediting Holder’s account with DTC through its Deposit Withdrawal Agent Commission system. Any delivery not effected by electronic
transmission shall be effected by delivery of physical certificates. 
 (d) No Fractional Shares. If a fractional share of Warrant
Shares would, but for the provisions of this Section 2(d), be issuable upon exercise of the rights represented by this Warrant, the Company shall (i) round a half share or greater to be delivered to Holder up to the next whole share
and (ii) round a less-than-half share to be delivered to Holder down to the nearest whole share. 

  
 Exhibit B Page 2 

 (e) Buy-In. Notwithstanding anything else to the contrary contained herein, in addition to
any other rights available to the Holder, if the Company fails to cause its transfer agent to transmit to the Holder a certificate or certificates representing the applicable Warrant Shares purchased upon exercise hereof or credit the Holder’s
balance account with DTC, as applicable, on or before the end of the Delivery Period (other than a failure caused by any incorrect or incomplete information provided by Holder to the Company hereunder), and if after such date the Holder purchases
shares of Common Stock to deliver in satisfaction of a sale by the Holder of Warrant Shares that the Holder anticipated receiving from the Company upon exercise of this Warrant (a “Buy-In”), then the Company shall, within three
Business Days after the Holder’s request, (1) pay cash to the Holder the amount by which (x) the Holder’s total purchase price (including commissions, if any) for the shares of Common Stock so purchased exceeds (y) the
amount obtained by multiplying (A) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue, by (B) the price at which the sell order giving rise to such purchase
obligation was executed, and (2) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored, or deliver to the Holder the number of Warrant Shares
that would have been issued had the Company timely complied with its exercise and delivery obligations hereunder. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In, together
with applicable confirmations and other evidence reasonably requested by the Company. Nothing herein shall limit the Holder’s right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a
decree of specific performance and/or injunctive relief with respect to the Company’s failure to timely deliver certificates representing the Warrant Shares as required pursuant to the terms hereof. 

(f) No Charge to Holder Upon Issuance. The issuance of Warrant Shares upon exercise of this Warrant shall be made without charge to
Holder for any issuance tax in respect thereof or other cost incurred by the Company in connection with such exercise and the related issuance of Warrant Shares (other than any transfer taxes resulting from the issuance of Warrant Shares to any
person other than Holder). 
 (g) Reservation of Shares. During the Exercise Period, the Company shall reserve and keep available out
of its authorized but unissued Common Stock such number of Warrant Shares issuable upon the full exercise of this Warrant. All Warrant Shares which are so issuable shall, when issued and upon the payment of the applicable Exercise Price, be duly and
validly issued, fully paid and nonassessable and free from all taxes, liens and charges and not subject to the pre-emptive rights of any holder of Common Stock or any other class or series of stock of the Company. During the Exercise Period, the
Company shall not take any action which would cause the number of authorized but unissued Common Stock to be less than the number of such shares required to be reserved hereunder for issuance upon exercise of this Warrant. 

(h) Limitations on Exercises. Notwithstanding anything to the contrary contained in this Warrant, this Warrant shall not be exercisable
by the Holder hereof to the extent (but only to the extent) that the Holder or any of its affiliates would beneficially own in excess of 9.98% (the “Maximum Percentage”) of the Common Stock. To the extent the above limitation
applies, the determination of whether this Warrant shall be exercisable (vis-à-vis other convertible, exercisable or exchangeable securities owned by the Holder or any of its affiliates) and of which such securities shall be exercisable (as
among all such securities owned by the Holder) shall, subject to such Maximum Percentage limitation, be determined on the basis of the first submission to the Company for conversion, exercise or exchange (as the case may be). No prior inability to
exercise this Warrant pursuant to this paragraph shall have any effect on the applicability of the provisions of this paragraph with respect to any subsequent determination of exercisability. For the purposes of this paragraph, beneficial ownership
and all determinations and calculations (including, without limitation, with respect to calculations of percentage ownership) shall be determined in accordance with Section 13(d) of the Exchange Act. The limitations contained in this paragraph
shall apply to a successor Holder of this Warrant. 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, including by virtue of any prior conversion or exercise of convertible or exercisable securities into Common Stock. Notwithstanding anything else set forth herein, in no event shall this Warrant be exercisable by the
Holder to the extent that the Holder or any of its affiliates would beneficially own in excess of 19.99% of the number of shares of the Company’s Common Stock outstanding as of the Issue Date unless any issuances in excess of the foregoing
limitation are approved by the Company’s common stockholders. 

  
 Exhibit B Page 3 

 3. Adjustments in Certain Events. The number, class, and price of Warrant Shares for which this Warrant
may be exercised are subject to adjustment from time to time upon the happening of certain events as follows: 
 (a) Subdivisions,
Combinations and Other Issuances. If the outstanding shares of the Company’s Common Stock are divided into a greater number of shares, by forward stock split or otherwise, or a dividend in stock is paid on the Common Stock, then the number
of shares of Warrant Shares for which the Warrant is then exercisable will be proportionately increased and the Exercise Price will be proportionately reduced. Conversely, if the outstanding shares of Common Stock are combined into a smaller number
of shares of Common Stock, by reverse stock split or otherwise, then the number of Warrant Shares for which the Warrant is then exercisable will be proportionately reduced and the Exercise Price will be proportionately increased. The increases and
reductions provided for in this Section 3(a) will be made with the intent and, as nearly as practicable, the effect that neither the percentage of the total equity of the Company obtainable on exercise of the Warrants nor the price
payable for such percentage upon such exercise will be affected by any event described in this Section 3(a). 
 (b) Merger,
Consolidation, Reclassification, Reorganization, Etc. In case of any change in the Common Stock through merger, consolidation, reclassification, reorganization, partial or complete liquidation, purchase of all or substantially all the assets of
the Company, or other change in the capital structure of the Company, then, as a condition of such change, lawful and adequate provision will be made so that the Holder will have the right thereafter to receive upon the exercise of the Warrant the
kind and amount of shares of stock or other securities or property to which he would have been entitled if, immediately prior to such event, he had held the number of Warrant Shares obtainable upon the exercise of the Warrant. In any such case,
appropriate adjustment will be made in the application of the provisions set forth herein with respect to the rights and interest thereafter of the Holder, to the end that the provisions set forth herein will thereafter be applicable, as nearly as
reasonably may be, in relation to any shares of stock or other property thereafter deliverable upon the exercise of the Warrant. The Company will not permit any change in its capital structure to occur unless the issuer of the shares of stock or
other securities to be received by the Holder, if not the Company, agrees to be bound by and comply with the provisions of this Warrant. 

(c) Notice of Record Date, Etc. In the event the Company shall propose to take any action of the types requiring an adjustment pursuant
to this Section 3 or a dissolution, liquidation or winding up of the Company shall be proposed, the Company shall give notice to Holder as provided in Section 6 below, which notice shall specify the record date, if any, with
respect to any such action and the date on which such action is to take place. Such notice shall also set forth such facts with respect thereto as shall be reasonably necessary to indicate the effect of such action (to the extent such effect may be
known at the date of such notice) on the Exercise Price and the number, kind or class of shares or other securities or property which shall be deliverable or purchasable upon the occurrence of such action or deliverable upon the exercise of the
Warrant. In the case of any action which will require the fixing of a record date, unless otherwise provided in this Warrant, such notice shall be given at least twenty (20) days prior to the date so fixed, and in case of all other action, such
notice shall be given at least thirty (30) days prior to the taking of such proposed action. 
 (d) If securities of the Company or
securities of any subsidiary of the Company are distributed pro rata to holders of Common Stock, such number of securities will be distributed to the Holder or its assignee upon exercise of its rights hereunder as such Holder or assignee would have
been entitled to if this Warrant had been exercised prior to the record date for such distribution. The provisions with respect to adjustment of the Common Stock provided in this Section 3 will also apply to the securities to which the
Holder or its assignee is entitled under this Section 3(d). 
 4. No Rights as a Stockholder. Except as otherwise provided herein, the
Holder will not, by virtue of ownership of the Warrant, be entitled to any rights of a stockholder of the Company but will, upon written request to the Company, be entitled to receive such quarterly or annual reports as the Company distributes to
its stockholders. 

  
 Exhibit B Page 4 

 5. Restrictions on Transfer; Legends. 

(a) Registration or Exemption Required. Assuming the accuracy of the representations and warranties of the Holder contained in the Subscription
Agreement, this Warrant has been issued in a transaction exempt from the registration requirements of the Securities Act by virtue of Regulation D and exempt from state registration or qualification under applicable state laws. Neither this Warrant
nor the Warrant Shares may be pledged, transferred, sold or assigned except pursuant to an effective registration statement or an exemption to the registration requirements of the Securities Act and applicable state laws. If, at the time of the
surrender of this Warrant in connection with any transfer of this Warrant, the transfer of this Warrant shall not be registered pursuant to an effective registration statement under the Securities Act and under applicable state securities or blue
sky laws, the Company may require, as a condition of allowing such transfer (i) that the Holder or transferee of this Warrant, as the case may be, furnish to the Company a written opinion of counsel (which opinion shall be in form, substance
and scope customary for opinions of counsel in comparable transactions) to the effect that such transfer may be made without registration under the Securities Act and under applicable state securities or blue sky laws, (ii) that the holder or
transferee execute and deliver to the Company an investment letter in form and substance acceptable to the Company and (iii) that the transferee be an “accredited investor” as defined in Rule 501 promulgated under the Securities Act
or a “qualified institutional buyer” as defined in Rule 144A(a) under the Securities Act. 
 (b) Restrictive Legend. The
Holder understands that until such time as the Warrant Shares have been registered under the Securities Act or otherwise may be sold pursuant to Rule 144 under the Securities Act or an exemption from registration under the Securities Act without any
restriction as to the number of securities as of a particular date that can then be immediately sold, this Warrant and the Warrant Shares, as applicable, shall bear a restrictive legend in substantially the form set forth on the cover page of this
Warrant (and a stop-transfer order may be placed against transfer of the certificates for such securities). 
 (c) Removal of Restrictive
Legends. The certificates evidencing the Warrant Shares shall not contain any legend restricting the transfer thereof: (A) while a registration statement covering the sale or resale of the Warrant Shares is effective under the Securities
Act, or (B) following any sale of such Warrant Shares pursuant to Rule 144, or (C) if such Warrant Shares are eligible for sale under Rule 144(b)(1), or (D) if such legend is not required under applicable requirements of the
Securities Act (including judicial interpretations and pronouncements issued by the staff of the Commission) and the Company shall have received an opinion of counsel to the Holder in form reasonably acceptable to the Company to such effect
(collectively, the “Unrestricted Conditions”). The Company shall cause its counsel to issue a legal opinion to its transfer agent if required by the transfer agent to effect the issuance of the Warrant Shares, as applicable, without
a restrictive legend or removal of the legend hereunder. The Company agrees that at such time as the Unrestricted Conditions are met, it will, no later than three (3) Trading Days following the delivery by the Holder to the Company or the
transfer agent of a certificate representing Warrant Shares, issued with a restrictive legend, deliver or cause to be delivered to such Holder a certificate (or electronic transfer) representing such Warrant Shares that is free from all restrictive
and other legends. 
 6. Notices; Adjustments. 

(i) All notices required or permitted hereunder shall be in writing and shall be deemed effectively given: (i) upon personal delivery to
the party to be notified; (ii) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient, and if not, then on the next business day; (iii) two (2) Business Days after having been sent by
registered or certified mail, return receipt requested, postage prepaid; or (iv) one (1) Business Day after deposit with a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All
communications shall be sent to the Company or to Holder, as applicable, at the respective addresses set forth on the signature page to the Subscription Agreement or at such other address(es) as they may designate, respectively, by ten
(10) days advance written notice to the other party hereto. 
 (ii) Upon the occurrence of any adjustments pursuant to Section 3
hereof, the Company at its expense shall, as promptly as reasonably practicable but in any event not later than 10 days thereafter, compute such adjustment in accordance with the terms hereof and furnish to Holder a certificate setting forth such
adjustment and showing in detail the facts upon which such adjustment is based. 

  
 Exhibit B Page 5 

 7. Non-Circumvention. 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 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 reasonably required to protect the rights of the Holder. 

8. Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of Delaware, without regard to conflict of
law principles, and notwithstanding the fact that one or more counterparts hereof may be executed outside of the state, or one or more of the obligations of the parties hereunder are to be performed outside of the state. 

9. Loss, Theft, Destruction or Mutilation of Warrant. Upon receipt by the Company of evidence reasonably satisfactory to it of the loss, theft,
destruction or mutilation of this Warrant, and, in the case of loss, theft, or destruction, of indemnity reasonably satisfactory to it, and, if mutilated, upon surrender and cancellation of this Warrant, the Company will execute and deliver a new
Warrant, having terms and conditions identical to this Warrant, in lieu hereof. 
 10. Modification and Waiver. The Warrant and any provision hereof
may be amended, waived, discharged or terminated only by an instrument in writing signed by the Company and the Holder of the Warrant. 
 11.
Successors. This Warrant shall be binding and inure to the benefit of the parties and their respective successors and assigns hereunder; provided that this Warrant may be assigned by Holder only in compliance with the conditions specified in
and in accordance with all of the terms of this Warrant. This Warrant does not create and shall not be construed as creating any rights enforceable by any other person or corporation. 

12. Headings. The headings used in this Warrant are used for convenience only and are not to be considered in construing or interpreting this Warrant.

 13. Saturdays, Sundays, Holidays. If the last or appointed day for the taking of any action or the expiration of any right required or granted
herein shall be a Saturday or a Sunday or shall be a legal holiday in the State of New York, then such action may be taken or such right may be exercised on the next succeeding day not a legal holiday. 

14. Severability. If any provision of this Warrant shall be held to be invalid or unenforceable, such invalidity or unenforceability shall not affect
any other provisions of this Warrant. 
 15. Execution and Counterparts. This Warrant may be executed in any number of counterparts, each of which
when so executed and delivered shall be deemed an original, and such counterparts together shall constitute only one instrument. Any one of such counterparts shall be sufficient for the purpose of proving the existence and terms of this Warrant, and
no party shall be required to produce an original or all of such counterparts in making such proof. 
 [THE REMAINDER OF THIS PAGE
INTENTIONALLY LEFT BLANK] 

  
 Exhibit B Page 6 

 IN WITNESS WHEREOF, each of the Company and Holder have each caused this Warrant to be executed
and delivered as of the Issue Date by an officer thereunto duly authorized. 
  

			
	GREENHUNTER RESOURCES, INC.
		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  

	
	Acknowledged and Agreed to as of the Issue Date:
	
	 Name of Purchaser:
                                         
                                         
                                         
 

	
	 Signature of Authorized Signatory of Purchaser:
                                         
                                       

	
	 Name of Authorized Signatory:
                                         
                                         
                          

	
	 Title of Authorized Signatory:
                                         
                                         
                          

 ATTACHMENT I 

NOTICE OF EXERCISE 

GREENHUNTER RESOURCES, INC. 

Attention:
                                 

The undersigned hereby elects to purchase, pursuant to the provisions of the Common Stock Warrant issued by GreenHunter Resources, Inc. as of
        , 2013, and held by the undersigned, the original of which is attached hereto, and (check the applicable box): 
  

	 ̈	Tenders herewith payment of the Exercise Price in the form of cash, via wire transfer of immediately available funds, in the amount of $        for
            shares of Common Stock. 

  

	 ̈	If this box is checked, as long as the Company’s transfer agent participates in the DTC Fast Automated Securities Transfer program (“FAST”), and except as otherwise provided in the next following
sentence, the Company shall effect delivery of the shares of Common Stock to the Holder by crediting to the account of the Holder or its nominee at DTC (as specified in this Exercise Notice) with the number of shares of Common Stock required to be
delivered. In the event that the Company’s transfer agent is not a participant in FAST, or if the shares of Common Stock are not otherwise eligible for delivery through FAST, the Company shall effect delivery of the shares of Common Stock by
delivering to Holder or its nominee physical certificates representing such shares. 

 Information for Delivery of uncertificated Shares by
DWAC: 
  

			
	Account Number:	 	  

	 Account Name:
	 	  

	 DTC Number:
	 	  

  

	
	HOLDER:
	
	  

	 Name:

	 Title:

	
	 Date:

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