EcoStim Announces Continued Support From Its Largest Shareholder

HOUSTON & NEUQUEN CITY, Argentina, June 1, 2015 (GLOBE NEWSWIRE) -- Eco-Stim Energy Solutions, Inc. (Nasdaq:ESES) ("EcoStim" or the "Company") announced today that it has entered into an amendment (the "Amendment") with ACM Emerging Markets Master Fund I, L.P. ("ACM") relating to the Company's convertible note agreement (the "Note Agreement"). ACM has requested, and the Company has agreed, to give ACM the ability to have the $2,485,163 interest payment, which was due on May 28, 2015 (the "Deferred Interest"), paid in the form of shares of the Company's common stock upon the consummation of a future equity offering, should one occur. In a future equity offering of $24,852,000 million or more, ACM will convert the entire Deferred Interest into shares of common stock at the same price as other investors. If a future equity offering is less than $24,852,000 million, the amount converted into stock will be reduced accordingly.

In the event that the Company does not consummate a future equity offering or the size of an equity offering is insufficient to enable payment of the entire Deferred Interest, the Company may, at its option, pay the Deferred Interest on October 31, 2015 in cash or in kind by increasing the principal amount of the Company's promissory note under the Note Agreement in an amount equal to the Deferred Interest. To the extent that the Deferred Interest is converted to a promissory note, such amount shall be due and payable on or before May 28, 2017. ACM, which currently owns approximately 47% of the Company's common stock on a fully diluted basis, has made this offer to support the growth opportunities of the Company and to accelerate needed capital expenditures.

Alexander Nickolatos, EcoStim's Chief Financial Officer, stated, "We are delighted that ACM, our financial and strategic partner, has expressed a continued commitment to assist in our growth opportunities. It further demonstrates that expanding the Company's service capacity and the option to obtain additional equity ownership are more valuable to ACM than cash. Currently, as discussed on our recent conference call, the Company is only able to provide well stimulation services for the conventional market, which we estimate represents less than 1/3 of the entire market. We feel it is very important to expand our capacity so that we can actively participate in a broader market including tight gas wells and unconventional multi-stage wells. With the proceeds derived from deferring this interest payment, the Company will be able to expand our capacity including relocating some of our turbine powered units to Argentina to join our current fleet."

John Yonemoto, Chief Investment Officer of ACM, added, "ACM remains committed to EcoStim as it achieves important milestones and supports Argentina in the strategically important development of its vast shale resources."

This press release does not constitute an offer to sell or a solicitation of an offer to buy the securities described herein. Any offering of the Company's securities may be made only by means of a prospectus and related prospectus supplement.

About the Company

Eco-Stim Energy Solutions is an environmentally focused oilfield service and technology company providing proprietary field management technologies and well stimulation and completion services to oil and gas producers drilling in the rapidly expanding international unconventional shale market. EcoStim's proprietary methodology and technology offers the potential to decrease the number of stages stimulated in shale plays through a unique process that predicts high probability production zones while confirming those production zones using the latest generation down-hole diagnostic tools. In addition, EcoStim offers its clients completion techniques that can dramatically reduce horsepower requirements, emissions, surface footprint and water usage. EcoStim seeks to deliver well completion services with better technology, better ecology and significantly improved economics for unconventional oil and gas producers worldwide.

Forward-Looking Statements:

The foregoing contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that the Company expects, believes or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions made by the Company based on management's experience, expectations and perception of historical trends, current conditions, anticipated future developments and other factors believed to be appropriate. Forward-looking statements are not guarantees of performance. Although the Company believes the expectations reflected in its forward-looking statements are reasonable and are based on reasonable assumptions, no assurance can be given that these assumptions are accurate or that any of these expectations will be achieved (in full or at all) or will prove to have been correct. Any forward-looking statement speaks only as of the date on which such statement is made, and the Company undertakes no obligation to correct or update any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by applicable law.

CONTACT: Jeffrey Freedman, Investor Relations 281-531-7200

Source:Eco-Stim Energy Solutions, Inc.