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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

High Mesa Holdings GP, LLC 		2. Issuer Name and Ticker or Trading Symbol

Alta Mesa Resources, Inc. /DE [ AMR ] 		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)

C/O ALTA MESA RESOURCES, INC., 15021 KATY FREEWAY, SUITE 400 		3. Date of Earliest Transaction (MM/DD/YYYY)

11/13/2018
(Street)

HOUSTON, TX 77094
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Class C Common Stock   (1)   (1) 11/13/2018     J   (2)       2752312    8/8/2018     (1) Class A Common Stock   2752312     (3) 181329784   (4) I   Through High Mesa Holdings, LP   (4)

Explanation of Responses:
(1)  Common units of SRII Opco, LP and an equal number of shares of Class C Common Stock of Alta Mesa Resources, Inc. (the "Company"), are convertible, as a unit, into an equal number of shares of Class A Common Stock of the Company and have no expiration date.
(2)  The securities were distributed to MME Mission Hope, LLC ("Mission Hope") by High Mesa Holdings, LP ("HMH LP") in exchange for Mission Hope's Class A Common Units in HMH LP (the "Distribution").
(3)  In the Distribution, the common units of SRII Opco, LP and shares of Class C Common Stock of the Company, considered as a unit, were exchanged for Mission Hope's Class A Common Units in HMH LP in redemption of the Class A Common Units. No value was assigned to any of the securities in the transaction.
(4)  (a) 134,422,824 common units of SRII Opco, LP and an equal number of shares of Class C Common Stock of Alta Mesa Resources, Inc. (the "Company"), which are convertible, as a unit, into an equal number of shares of Class A Common Stock of the Company and (b) 46,906,960 common units of SRII Opco, LP and an equal number of shares of Class C Common Stock of the Company that are issuable if the Class A Common Stock trades above certain thresholds (the "Earn-Out Shares"), in each case beneficially owned by HMH LP, of which High Mesa Holdings GP, LLC is the sole general partner

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
High Mesa Holdings GP, LLC
C/O ALTA MESA RESOURCES, INC.
15021 KATY FREEWAY, SUITE 400
HOUSTON, TX 77094
X


Signatures
/s/ Kimberly o. Warnica, Attorney-in-Fact 11/15/2018
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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