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
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5
                      
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 *

FIR TREE CAPITAL MANAGEMENT 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)

__ X __ Director                      __ X __ 10% Owner
_____ Officer (give title below)      __ X __ Other (specify below)
See Remarks
(Last)          (First)          (Middle)

55 WEST 46TH STREET, 29TH FLOOR
3. Date of Earliest Transaction (MM/DD/YYYY)

3/29/2018
(Street)

NEW YORK, NY 10036
(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
Series A Convertible Preferred Stock ("Preferred Stock")     (1) 3/29/2018     A      10000         (2)   (2) Common Stock, $0.001 par value per share ("Common Stock")   8695652   $1000   10000   I   See footnote   (3)

Explanation of Responses:
(1)  The initial conversion price of the Series A Preferred Stock equals $1.15 and is subject to adjustment for stock splits, combinations, certain distributions or similar events.
(2)  The Preferred Stock is convertible at any time, at the holder's election, and has no expiration date. The Preferred Stock accrues dividends which may, under certain circumstances, be paid in shares of Common Stock.
(3)  The securities to which this filing relates are held directly by certain private-pooled investment vehicles for which the Reporting Person serves as the investment manager (the "Funds"). The Reporting Person is the investment manager of the Funds, and has been granted investment discretion over portfolio investments, including the securities held by the Funds. The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the Reporting Person's pecuniary interest in the securities.

Remarks:
Because Andrew Teno (an employee of the Reporting Person), Brian R. Stewart and Todd R. Snyder were each designated by the Reporting Person to the board of directors of the Issuer, the Reporting Person may be deemed to be a director by deputization.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
FIR TREE CAPITAL MANAGEMENT LP
55 WEST 46TH STREET
29TH FLOOR
NEW YORK, NY 10036
X X
See Remarks

Signatures
/s/ Fir Tree Capital Management, LP; By: Brian Meyer, its General Counsel 4/2/2018
** 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.