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): May 15, 2018

PIONEER ENERGY SERVICES CORP.
(Exact name of registrant as specified in its charter)

Texas
1-8182
74-2088619
(State or other jurisdiction
of incorporation)
(Commission File Number)
(IRS Employer
Identification No.)

1250 NE Loop 410, Suite 1000
San Antonio, Texas
78209
(Address of principal executive offices)
(ZIP Code)

Registrant's telephone number, including area code: (855) 884-0575

_________________________________________

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:
q  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
q  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
q  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
q  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company q
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. q
_________________________________________






Item 8.01. Other Events.
 
Lorne E. Phillips, Executive Vice President and Chief Financial Officer of Pioneer Energy Services Corp. (the “Company”), adopted a prearranged trading plan on May 15, 2018, in accordance with guidelines specified by Rule 10b5-1 under the Securities Exchange Act of 1934.
 
Under the 10b5-1 plan, Mr. Phillips may sell up to an aggregate of 190,000 shares of the Company’s common stock to be acquired through the exercise of stock options which are scheduled to expire on February 2, 2019 and March 2, 2019. Shares may be sold under the 10b5-1 plan on the open market at prevailing market prices and subject to minimum price thresholds specified therein. The 10b5-1 plan is scheduled to terminate on March 1, 2019, unless terminated sooner in accordance with its terms.

Any transactions under the 10b5-1 plan will be disclosed publicly through Form 4 filings with the Securities and Exchange Commission.





SIGNATURES

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 hereunto duly authorized.

PIONEER ENERGY SERVICES CORP.


/s/ Lorne E. Phillips
Lorne E. Phillips
Executive Vice President and Chief Financial Officer




Dated: May 21, 2018