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 * SIEGEL MARK S   2. Issuer Name and Ticker or Trading Symbol PATTERSON UTI ENERGY INC [PTEN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman of the Board (Last) (First) (Middle) 1801 CENTURY PARK EAST, SUITE 1111 3. Date of Earliest Transaction (Month/Day/Year) 01/09/2019 (Street) LOS ANGELES, CA 90067 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 par value per share 01/09/2019   G V 33,500 (1) D $ 0 1,367,024 D   Common Stock, $.01 par value per share 01/09/2019   G V 33,500 (1) A $ 0 83,400 I By Trust(s) (2) Common Stock, $.01 par value per share 04/23/2019   A   33,100 (3) A $ 0 1,400,124 D   Common Stock, $.01 par value per share 04/23/2019   F   10,094 (4) D $ 15.83 1,390,030 D   Common Stock, $.01 par value per share 04/23/2019   A   69,600 (5) A $ 0 1,459,630 D   Common Stock, $.01 par value per share 04/24/2019   F   17,565 (6) D $ 15.83 1,442,065 D   Common Stock, $.01 par value per share               605,000 I See Footnote (7)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SIEGEL MARK S 1801 CENTURY PARK EAST SUITE 1111 LOS ANGELES, CA 90067	X		Chairman of the Board

Signatures

By Barry Huntsman pursuant to a Limited Power of Attorney filed with the SEC on 3/29/2013 /s/ Barry Huntsman		04/25/2019
**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)	The reporting person gifted an aggregate of 33,500 shares to a trust for which the reporting person is the trustee.
(2)	Held by trust(s) for which the reporting person is the trustee.
(3)	Shares received in settlement of the 2016 Performance Unit grant.
(4)	Shares disposed to pay applicable withholding taxes on shares received from the 2016 Performance Unit grant.
(5)	Restricted stock units that convert into common stock on a one-for-one basis. One-third of the restricted stock units vests on April 23, 2020 and the remainder vests in equal monthly installments over the twenty-four months following April 23, 2020.
(6)	Shares disposed to pay applicable withholding taxes on Restricted stock units converted into common stock on April 24, 2019.
(7)	Shares owned by Remy Capital Partners III, L.P. Mr. Siegel is the sole stockholder of the general partner of Remy Capital Partners III, L.P.

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