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 *

Bienville Argentina Opportunities Master Fund, LP 		2. Issuer Name and Ticker or Trading Symbol

Eco-Stim Energy Solutions, Inc. [ ESES ] 		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 WALKERS CORP LTD, CAYMAN CORP CENTRE, 27 HOSPITAL ROAD 		3. Date of Earliest Transaction (MM/DD/YYYY)

7/9/2015
(Street)

GEORGE TOWN, E9 KY1-9008
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

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

___ Form filed by One Reporting Person
_ X _ 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
Common Stock, Eco-Stim Energy Solutions, Inc.   9/22/2016     P    50874   A $2.2781   2979534   (1) (2) D   (3)  

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

Explanation of Responses:
( 1)  All of the reported shares are owned directly by Bienville Argentina Opportunities Master Fund, LP, whose general partner is BAOF GP, LLC ("General Partner") and whose investment manager is Bienville Capital Management, LLC ("Investment Manager"). The General Partner and Investment Manager could be deemed to be indirect beneficial owners of the above listed Common Stock of Eco-Stim Energy Solutions, Inc. ("the reported shares"). William Herbert Stimpson II, Michael Cullen Thompson, Jr., and Ralph Fayden Reynolds (collectively, "Managers") are the managers and direct or indirect controlling shareholders of the General Partner and the Investment Manager. As such, the Managers and Moonpie Management, LLC, the entity through which one of the Managers holds his interest in the Investment Manager, could be deemed to share such indirect beneficial ownership of the reported shares with the General Partner, the Investment Manager and Bienville Argentina Opportunities Master Fund, LP.
( 2)  The General Partner, the Investment Manager, the Managers, and Moonpie Management, LLC, disclaim beneficial ownership except to the extent of their respective pecuniary interests therein, and this report shall not be deemed an admission of beneficial ownership of these securities for Section 16 or for any other purposes. The General Partner, the Investment Manager, the Managers, and Moonpie Management, LLC, disclaim beneficial ownership except to the extent of their respective pecuniary interests therein, and this report shall not be deemed an admission of beneficial ownership of these securities for Section 16 or for any other purposes.
( 3)  The address of William H Stimpson, II is 35 Old Norwalk Road, New Canaan, CT 06840. The address of Ralph Fayden Reynolds is 104 Delafield Island Road, Darien, CT 06820. The address of M. Cullen Thompson Jr. is 124 31st Street Manhattan Beach, CA 90266. The address of Moonpie Management, LLC is 104 Delafield Island Road Darien, CT 06820.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Bienville Argentina Opportunities Master Fund, LP
C/O WALKERS CORP LTD, CAYMAN CORP CENTRE
27 HOSPITAL ROAD
GEORGE TOWN, E9 KY1-9008
X

Bienville Capital Management, LLC
405 LEXINGTON AVENUE
34TH FLOOR
NEW YORK, NY 10174


(1)(2)
BAOF GP, LLC
C/O WALKERS CORP LTD, CAYMAN CORP CENTRE
27 HOSPITAL ROAD
GEORGE TOWN, E9 KY1-9008


(1)(2)

Signatures
/s/ Donald Stoltz, III on behalf of Bienville Argentina Opportunities Master Fund, LP, by BAOF GP, LLC, its General Partner, by Donald Stoltz, III, Chief Operating Officer 9/23/2016
** Signature of Reporting Person Date

/s/ William H. Stimpson, II, Managing Member, on behalf of Bienville Capital Management, LLC 9/23/2016
** Signature of Reporting Person Date

/s/ Donald Stoltz, III on behalf of BAOF GP, LLC 9/23/2016
** Signature of Reporting Person Date

/s/ Ralph Fayden Reynolds, Managing Member, on behalf of Moonpie Management, LLC, as controlling shareholder of the Investment Manager and General Partner 9/23/2016
** Signature of Reporting Person Date

/s/ William H. Stimpson, II, controlling shareholder of the Investment Manager and General Partner 9/23/2016
** Signature of Reporting Person Date

/s/ M. Cullen Thompson, Jr., controlling shareholder of the Investment Manager and General Partner 9/23/2016
** Signature of Reporting Person Date

/s/ Ralph Fayden Reynolds, controlling shareholder of the Investment Manager and General Partner 9/23/2016
** 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.