FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
K2 PRINCIPAL FUND, L.P.
  2. Issuer Name and Ticker or Trading Symbol
Rosehill Resources Inc. [ROSE]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
2 BLOOR STREET WEST, SUITE 801
3. Date of Earliest Transaction (Month/Day/Year)
07/25/2018
(Street)

TORONTO, A6 M4W 3E2
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 07/25/2018   S   300 D $ 9 296,691 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrants $ 11.50             05/27/2017 04/27/2022 Class A Common Stock 1,164,548   1,164,548 D  
8% Series A Cumulative Preferred Stock (1)               (2)   (1) Class A Common Stock 939,336   10,802 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
K2 PRINCIPAL FUND, L.P.
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    
K2 GENPAR LP
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    
K2 GENPAR 2009 INC
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    
Shawn Kimel Investments, Inc.
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    
K2 & Associates Investment Management Inc.
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    
Kimel Shawn
2 BLOOR STREET WEST
SUITE 801
TORONTO, A6 M4W 3E2
    X    

Signatures

 /s/ Daniel Gosselin, President, The K2 Principal Fund L.P   07/26/2018
**Signature of Reporting Person Date

 /s/ Daniel Gosselin, President, K2 GenPar L.P   07/26/2018
**Signature of Reporting Person Date

 /s/ Daniel Gosselin, President, K2 Genpar 2009 Inc   07/26/2018
**Signature of Reporting Person Date

 /s/ Daniel Gosselin, President, Shawn Kimel Investments Inc   07/26/2018
**Signature of Reporting Person Date

 /s/ Daniel Gosselin, President, K2 & Associates Investment Managment Inc   07/26/2018
**Signature of Reporting Person Date

 /s/ Daniel Gosselin, in his individual capacity   07/26/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each shares of series A preferred stock is convertible into 86.9565 shares of class A common stock and there is no expiration
(2) The series A preferred stock is convertible into class A common stock any time

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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