FORM 8.3

               PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY            

        A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE     

                      Rule 8.3 of the Takeover Code (the "Code")                   

    1. KEY INFORMATION

    (a) Full name of discloser:                          HGC Arbitrage Fund LP             
                                                                                           
    (b) Owner or controller of interests and short       HGC Investment Management Inc.    
    positions disclosed, if different from 1(a):                                           
    The naming of nominee or vehicle companies is                                          
    insufficient. For a trust, the trustee(s), settlor                                     
    and beneficiaries must be named.                                                       
                                                                                           
    (c) Name of offeror in relation to whose relevant    Sandstorm Gold Ltd                
    securities this form relates:                                                          
    Use a separate form for each offeror                                                   
                                                                                           
    (d) If an exempt fund manager connected with an                                        
    offeror, state this and specify identity of offeror:                                   
                                                                                           
    (e) Date position held/dealing undertaken:           May-19-2017                       
    For an opening position disclosure, state the latest                                   
    practicable date prior to the disclosure                                               
                                                                                           
    (f) In addition to the company in 1(c) above, is the N/A                               
    discloser making disclosures in respect of any other                                   
    party to the offer?                                                                    
    If it is a cash offer or possible cash offer, state                                    
    "N/A"                                                                                  

    2. POSITIONS OF THE PERSON MAKING THE DISCLOSURE

    If there are positions or rights to subscribe to disclose in more than one
    class of relevant securities of the offeror or offeree named in 1(c), copy
    table 2(a) or (b) (as appropriate) for each additional class of relevant
    security.

    (a) Interests and short positions in the relevant securities of the offeror or
    offeree to which the disclosure relates following the dealing (if any)

    Class of relevant security:                          Common shares NPV                  
                                                                                            
                                               Interests               Short positions      
                                                                                            
                                             Number          %          Number          %   
                                                                                            
    (1) Relevant securities owned and/                                1,696,106       1.116 
    or controlled:                                                                          
                                                                                            
    (2) Cash-settled derivatives:                                                           
                                                                                            
    (3) Stock-settled derivatives                                                           
    (including options) and agreements                                                      
    to purchase/sell:                                                                       
                                                                                            
                                                                      1,696,106       1.116 
    TOTAL:                                                                                  

    All interests and all short positions should be disclosed.

    Details of any open stock-settled derivative positions (including traded
    options), or agreements to purchase or sell relevant securities, should be
    given on a Supplemental Form 8 (Open Positions).

    (b) Rights to subscribe for new securities (including directors' and other
    employee options)

    Class of relevant security in relation to                                              
    which subscription right exists:                                                       
                                                                                           
    Details, including nature of the rights                                                
    concerned and relevant percentages:                                                    

    3. DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

    Where there have been dealings in more than one class of relevant securities of
    the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as
    appropriate) for each additional class of relevant security dealt in.

    The currency of all prices and other monetary amounts should be stated.

    (a) Purchases and sales

      Class of relevant       Purchase/sale     Number of securities     Price per unit    
          security                                                                         
                                                                                           
    Common shares NPV                           32,730                $4.7864 CAD          
                          Sale                                                             

    (b) Cash-settled derivative transactions

        Class of        Product         Nature of dealing       Number of    Price per unit
        relevant      description    e.g. opening/closing a     reference                  
        security        e.g. CFD      long/short position,      securities                 
                                      increasing/reducing a                                
                                       long/short position                                 
                                                                                           

    (c) Stock-settled derivative transactions (including options)

    (i) Writing, selling, purchasing or varying

    Class of    Product      Writing,    Number of  Exercise    Type     Expiry    Option  
    relevant  description   purchasing,  securities price per   e.g.      date      money  
    security   e.g. call     selling,     to which    unit    American,             paid/  
                 option    varying etc.    option             European            received 
                                          relates               etc.              per unit 
                                                                                           

    (ii) Exercise

    Class of relevant      Product         Exercising/        Number of      Exercise price 
        security         description    exercised against    securities         per unit    
                      e.g. call option                                                      
                                                                                            

    (d) Other dealings (including subscribing for new securities)

     Class of relevant       Nature of dealing             Details        Price per unit (if
         security            e.g. subscription,                              applicable)    
                                 conversion                                                 
                                                                                            

    4. OTHER INFORMATION

    (a) Indemnity and other dealing arrangements

    Details of any indemnity or option arrangement, or any agreement or                    
    understanding, formal or informal, relating to relevant securities which may be        
    an inducement to deal or refrain from dealing entered into by the person making        
    the disclosure and any party to the offer or any person acting in concert with         
    a party to the offer:                                                                  
    Irrevocable commitments and letters of intent should not be included. If there         
    are no such agreements, arrangements or understandings, state "none"                   
                                                                                           
                                                                                           
    None                                                                                   

    (b) Agreements, arrangements or understandings relating to options or
    derivatives

    Details of any agreement, arrangement or understanding, formal or informal,            
    between the person making the disclosure and any other person relating to:             
    (i) the voting rights of any relevant securities under any option; or                  
    (ii) the voting rights or future acquisition or disposal of any relevant               
    securities to which any derivative is referenced:                                      
    If there are no such agreements, arrangements or understandings, state "none"          
                                                                                           
                                                                                           
    None                                                                                   

    (c) Attachments

    Is a Supplemental Form 8 (Open Positions) attached?                           NO       

       

    Date of disclosure:                         May-23-2017                                
                                                                                           
    Contact name:                               Osie Ukwuoma                               
                                                                                           
    Telephone number:                           +1 647 776 2194                            

    Public disclosures under Rule 8 of the Code must be made to a Regulatory
    Information Service.

    The Panel's Market Surveillance Unit is available for consultation in relation
    to the Code's disclosure requirements on +44 (0)20 7638 0129.

    The Code can be viewed on the Panel's website at www.thetakeoverpanel.org.uk .