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): September 29, 2015 (September 29, 2015)

KEY ENERGY SERVICES, INC.

(Exact name of registrant as specified in its charter)

1301 McKinney Street, Suite 1800

Houston, Texas 77010

(Address of principal executive offices and Zip Code)

713-651-4300

(Registrant’s telephone number, including area code)

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:

Item 7.01 Regulation FD Disclosure.

Key Energy Services, Inc. (the “Company”) will deliver a presentation to investors at the Johnson Rice 2015 Energy Conference on September 30, 2015 in New Orleans, Louisiana. A copy of the slides to be used in connection with the presentation is attached as Exhibit 99.1, and is incorporated herein by reference. The information contained in this Item 7.01 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

* * * *

This Current Report on Form 8-K, the attached presentation materials and the Company’s webcast presentation contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Any matters that are not of historic fact are forward-looking statements. These forward-looking statements are based on the Company’s current expectations, estimates and projections about the Company, its industry, its management’s beliefs and certain assumptions made by management. No assurance can be given that such expectations, estimates or projections will prove to have been correct. Whenever possible, these forward-looking statements are identified by words such as “expects,” “believes,” “anticipates” and similar phrases.

Readers are cautioned that any such forward-looking statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict, including, but not limited to: risks that Key will be unable to achieve its financial, capital expenditure and operational projections, including quarterly and annual projections of revenue and/or operating income and risks that Key’s expectations regarding future activity levels, customer demand, and pricing stability may not materialize (whether for Key as a whole or for geographic regions and/or business segments individually); risks that fundamentals in the U.S. oil and gas markets may not yield anticipated future growth in Key’s businesses, or could further deteriorate or worsen from the recent market declines, and/or that Key could experience further unexpected declines in activity and demand for its rig service, fluid management service, coiled tubing service, and fishing and rental service businesses; risks relating to Key’s ability to implement technological developments and enhancements; risks relating to compliance with environmental, health and safety laws and regulations, as well as actions by governmental and regulatory authorities; risks relating to compliance with the FCPA and anti-corruption laws, including risks related to costs in connection with FCPA investigations; risks regarding the timing or conclusion of the FCPA investigations, including the risk of fines or penalties imposed by government agencies for violations of the FCPA; risks affecting Key’s international operations, including risks affecting Key’s ability to execute its plans to withdraw from its international markets outside North America; risks that Key may be unable to achieve the benefits expected from acquisition and disposition transactions, and risks associated with integration of the acquired operations into Key’s operations; risks, in responding to changing or declining market conditions, that Key may not be able to reduce, and could even experience increases in, the costs of labor, fuel, equipment and supplies employed and used in Key’s businesses; risks relating to changes in the demand for or the price of oil and natural gas; risks that Key may not be able to execute its capital expenditure program and/or that any such capital expenditure investments, if made, will not generate adequate returns; risks relating to Key’s ability to satisfy listing requirements for its equity securities; risks that Key may not have sufficient liquidity; risks relating to Key’s ability to comply with covenants under its current credit facilities; and other risks affecting Key’s ability to maintain or improve operations, including its ability to maintain prices for services under market pricing pressures, weather risks, and the impact of potential increases in general and administrative expenses.

Because such statements involve risks and uncertainties, the Company’s actual results and performance may differ materially from the results expressed or implied by such forward-looking statements. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such

forward-looking statements. Other important risk factors that may affect the Company’s business, results of operations and financial position are discussed in its most recently filed Annual Report on Form 10-K, recent Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K and in other Securities and Exchange Commission filings. Unless otherwise required by law, the Company also disclaims any obligation to update its view of any such risks or uncertainties or to announce publicly the result of any revisions to the forward-looking statements made here. However, readers should review carefully reports and documents that the Company files periodically with the Securities and Exchange Commission.

Item 9.01 Financial Statements and Exhibits.

SIGNATURE

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

Exhibit Index