FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Tucker Brian L   2. Issuer Name and Ticker or Trading Symbol PIONEER ENERGY SERVICES CORP [PES] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & Pres Drilling Svs. Div. (Last) (First) (Middle) 1250 NE LOOP 410 #1000 3. Date of Earliest Transaction (Month/Day/Year) 01/28/2016 (Street) SAN ANTONIO, TX 78209 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/30/2016   M   3,652 A (1) 29,923 D   Common Stock 01/31/2016   M   4,227 A (1) 34,150 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee stock option (Right to buy)

$ 1.31

01/28/2016

A

107,983

(2)

01/28/2026

Common stock

107,983

$ 0

107,983

D

Restricted Stock Units

(1)

01/30/2016

M

3,652

(3)

(3)

Common Stock

3,652

$ 0

3,653

D

Restricted Stock Units

(1)

01/31/2016

M

4,227

(4)

(4)

Common Stock

4,227

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Tucker Brian L 1250 NE LOOP 410 #1000 SAN ANTONIO, TX 78209			EVP & Pres Drilling Svs. Div.

Signatures

Brian L. Tucker		02/01/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Restricted stock units convert into common stock on a one-for-one basis.
(2)	The option becomes exercisable in three equal installments on January 28, 2017, 2018 and 2019.
(3)	On January 30, 2014, the reporting person was granted 10,957 restricted stock units, vesting one-third on January 30, 2015, one-third on January 30, 2016, and the final one-third on January 30, 2017.
(4)	On May 21, 2013, the reporting person was granted 12,682 restricted stock units, vesting one-third on January 31, 2014, one-third on January 31, 2015 and the final one-third on January 31, 2016. The reporting person has elected, upon the vesting thereof, to defer the receipt of 126 shares under the terms of the Pioneer Energy Services Corp. Nonqualified Retirement Savings and Investment Plan. The deferred shares will be delivered to the reporting person upon the reporting person's retirement following separation from service or another scheduled distribution date as provided by Section 409A of the Internal Revenue Code of 1986, as amended.

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