UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 19, 2014

C&J ENERGY SERVICES, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (713) 325-6000

Not Applicable.

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Item 8.01 Other Events.

As previously disclosed, C&J Energy Services, Inc. (“we,” “our” or the “Company), the members of our board of directors, including our management directors, together with Nabors Industries Ltd. (“Nabors”) and its wholly owned subsidiary, Nabors Red Lion Limited (“Red Lion”), were sued in a putative shareholder class action in the Court of Chancery of the State of Delaware (the “Court of Chancery”) by certain stockholders related to our entry into that certain Agreement and Plan of Merger, dated as of June 25, 2014, among Nabors, Red Lion and the Company (the “Merger Agreement”). The case is styled City of Miami General Employees’ and Sanitation Employees’ Retirement Trust, et al. v. C&J Energy Services, Inc., et al.; C.A. No. 9980-VCN. The complaint sought injunctive relief, among other things, including an injunction against the consummation of the transactions contemplated by the Merger Agreement, together with attorney’s fees and costs.

On November 24, 2014, the Court of Chancery issued a bench ruling followed by an order on November 25, 2014 preliminarily enjoining the Company from holding its stockholder meeting to approve the Merger Agreement for a period of 30 days from November 24, 2014, during which period certain members of our board of directors were ordered to solicit alternative proposals to purchase the Company (or a controlling stake in the Company) that are superior to the proposed merger from other potential third parties.

On December 19, 2014, the Delaware Supreme Court overturned the order of the Court of Chancery. As a result of this reversal, C&J has immediately terminated its previously announced solicitation of alternative proposals.

On December 19, 2014, we issued a press release announcing the ruling of the Delaware Supreme Court. A copy of such press release is attached hereto as Exhibit 99.1 and is incorporated in this Item 8.01 by reference.

Important Information for Investors and Stockholders

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. In connection with the proposed transaction, Nabors Red Lion Limited (which will be renamed C&J Energy Services Ltd. as of the closing of the proposed transaction), has filed with the SEC a registration statement on Form S-4, which includes a preliminary proxy statement of C&J that also constitutes a preliminary prospectus of Red Lion. The registration statement has not been declared effective by the SEC, and the definitive joint proxy statement/prospectus is not currently available. Each of Red Lion and C&J also plans to file other relevant documents with the SEC regarding the proposed transactions. This material is not a substitute for the final prospectus/proxy statement or any other documents the parties will file with the SEC. After the registration statement has been declared effective by the SEC, the definitive proxy statement/prospectus will be delivered to stockholders of C&J. INVESTORS AND SECURITY HOLDERS OF C&J ARE URGED TO READ THE S-4 (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER DOCUMENTS RELATING TO THE PROPOSED TRANSACTION THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and stockholders will be able to obtain free copies of the S-4 and other documents containing important information about Red Lion and C&J, once such documents are filed with the SEC, through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by Red Lion will be available free of charge on Nabors’ internet website at www.nabors.com under the tab “Investor Relations” and then under the tab “SEC Filings” or by contacting Nabors’ Investor Relations Department at 281-775-8038. Copies of the documents filed with the SEC by C&J will be available free of charge on C&J’s internet website at www.cjenergy.com under the tab “Investor Relations” and then under the tab “SEC Filings” or by contacting C&J’s Investor Relations Department at 713-260-9986.

Participants in the Solicitation

C&J, its directors and certain executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of C&J in connection with the proposed transaction. Information about the directors and executive officers of C&J is set forth in C&J’s proxy statement for its 2014 annual meeting of stockholders, which was filed with the SEC on April 10, 2014. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC when they become available. Free copies of these documents can be obtained using the contact information above.

Cautionary Statement Regarding Forward-Looking Statements

Certain statements and information in this Current Report and the materials furnished as Exhibit 99.1 herewith may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act. These include statements regarding the effects of the Pending Transaction, estimates, expectations, projections, goals, forecasts, assumptions, risks and uncertainties and are typically identified by words or phrases such as “may,” “will,” “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” “target,” “forecast,” and other words and terms of similar meaning. For example, statements regarding future financial performance, future competitive positioning and business synergies, future acquisition cost savings, future accretion to earnings per share, future market demand, future benefits to stockholders, future economic and industry conditions, the proposed transaction (including its benefits, results, effects and timing), the attributes of the proposed transaction and C&J as a subsidiary of Red Lion and whether and when the transactions contemplated by the merger agreement will be consummated, are forward-looking statements within the meaning of federal securities laws.

These forward-looking statements are subject to numerous risks and uncertainties, many of which are beyond the control of Nabors and the Company, which could cause actual benefits, results, effects and timing to differ materially from the results predicted or implied by the statements. These risks and uncertainties include, but are not limited to: the failure of the stockholders of the Company to approve the proposed transaction; the risk that the conditions to the closing of the proposed transaction are not satisfied; the risk that regulatory approvals required for the proposed transaction are not obtained or are obtained subject to conditions that are not anticipated; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the proposed transaction; uncertainties as to the timing of the proposed transaction; competitive responses to the proposed transaction; costs and difficulties related to the integration of the Company’s business and operations with Red Lion’s business and operations; the inability to obtain or delay in obtaining cost savings and synergies from the proposed transaction; unexpected costs, charges or expenses resulting from the proposed transaction; the outcome of pending or potential litigation; the inability to retain key personnel; uncertainty of the expected financial performance of Nabors following completion of the proposed transaction; and any changes in general economic and/or industry specific conditions.

Nabors and the Company caution that the foregoing list of factors is not exclusive. Additional information concerning these and other risk factors is contained in Nabors’s and the Company’s most recently filed Annual Reports on Form 10-K, subsequent Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K, and other SEC filings, which are available at the SEC’s website, http://www.sec.gov. All subsequent written and oral forward-looking statements concerning Nabors, the Company, the proposed transaction or other matters attributable to Nabors and the Company or any person acting on their behalf are expressly qualified in their entirety by the cautionary statements above. Each forward looking statement speaks only as of the date of the particular statement, and neither Nabors nor the Company undertakes any obligation to publicly update any of these forward-looking statements to reflect events or circumstances that may arise after the date hereof.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

EXHIBIT INDEX