CJ 2018 Supplement to Proxy Statment

May 18, 2018 Re: Supplemental Proxy Information Related to Say on Pay Proposal and Election of Class I Directors at the 2018 Annual Meeting of Stockholders of C&J Energy Services, Inc. Dear Valued C&J Stockholder, We are seeking your support for the Company’s advisory vote to approve 2017 executive compensation (the “Current Say on Pay Proposal”) and the Company’s two nominees for re-election as Class I directors (the “Director Election Proposal”) at our 2018 Annual Meeting of Stockholders (the “Annual Meeting”). We are also providing clarifying information to our definitive proxy statement filed with the U.S. Securities and Exchange Commission (“SEC”) on April 9, 2018 and subsequently mailed to you in connection with the solicitation by C&J’s Board of Directors (the “Board”) of proxies to be voted at the Annual Meeting (the “2018 Proxy Statement”). Capitalized terms used but not defined herein have the meanings given to such terms in the 2018 Proxy Statement. Current Say on Pay Proposal We are asking stockholders to approve on an advisory basis the 2017 compensation of the Company’s Named Executive Officers, as defined and discussed in “Compensation Discussion and Analysis” and “Executive Compensation Tables” in the 2018 Proxy Statement. We made positive changes to our compensation program following our emergence from bankruptcy in January 2017 (the “Chapter 11 Proceeding”), taking into account significant input from our stockholders, including the establishment of the Company’s first performance-based short-term incentive plan. It is important to note that the Board has been largely reconstituted since the Company’s last advisory vote on executive compensation in 2016 (the “2016 Say on Pay Proposal”), and we completed a CEO transition (among other changes to our executive management team) since the 2016 Say on Pay Proposal. With respect to your consideration of the Current Say on Pay Proposal, and any concern that may exist due to the negative result of the 2016 Say on Pay Proposal, we ask that stockholders take the following into account: • The negative result of the 2016 Say on Pay Proposal was largely attributable to a single stockholder that at the time owned 52% of our shares. The stockholder had significant direct input over the executive compensation program at issue, as well as indirect input with an affiliate and designees serving on the Board and the Compensation Committee of the Board. Based on intensive discussions with the stockholder in connection with our 2016 annual meeting of stockholders (the “2016 Annual Meeting”), our knowledge and belief is that the stockholder voted against the 2016 Say on Pay Proposal due to its disagreement with the former Board regarding matters unrelated to the executive compensation program; • Shortly following the 2016 Annual Meeting, we entered the Chapter 11 Proceeding and our stock was delisted from the New York Stock Exchange (“NYSE”). As a result of the Chapter 11 Proceeding, both the Board and our stockholder base were reconstituted; 2