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 *

CROXALL DOUGLAS B 		2. Issuer Name and Ticker or Trading Symbol

Marathon Patent Group, Inc. [ MARA ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
CEO, Chairman
(Last)          (First)          (Middle)

11100 SANTA MONICA BLVD., STE. 380 		3. Date of Earliest Transaction (MM/DD/YYYY)

5/23/2017
(Street)

LOS ANGELES, CA 90025
(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
Option   $6.40   5/23/2017     D         220000      (1) 11/3/2024   Common Stock   220000   $0   0   D    
Option   $2.64   5/23/2017     D         307692      (2) 6/11/2018   Common Stock   307692   $0   0   D    

Explanation of Responses:
(1)  220,000 options to purchase shares of the Issuer's common stock were granted on 11/03/2014 (adjusted for the 1:2 stock dividend issued on December 2, 2014), which vested in 24 equal installments over a 24-month period beginning on November 3, 2014. On May 23, 2017, Mr. Croxall returned 220,000 of such options, respectively, for cancellation.
(2)  307,692 options to purchase shares of the Issuer's common stock were granted on 6/11/2013 (adjusted for the 1:2 stock dividend issued on December 2, 2013) ), which vested in 24 equal installments over a 24-month period beginning on June 11, 2013. On May 23, 2017, Mr. Croxall returned all of such options in the amount of 307,692 for cancellation.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
CROXALL DOUGLAS B
11100 SANTA MONICA BLVD., STE. 380
LOS ANGELES, CA 90025 		X
CEO, Chairman

Signatures
/s/Douglas Croxall 5/31/2017
** 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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