Form: 3

Initial statement of beneficial ownership of securities

April 20, 2017

Documents

SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
MATTSON ERIC L
(Last) (First) (Middle)
1820 NORTH I-35, P.O. BOX 1715
(Street)
GAINESVILLE TX 76241
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
04/20/2017 		3. Issuer Name and Ticker or Trading Symbol
Select Energy Services, Inc. [ WTTR ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Executive VP, Finance
 5. If Amendment, Date of 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
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Options (right to buy) (1) (1) Class A common stock 41,920 20.61 D
Stock Options (right to buy) (2) (2) Class A common stock 45,235 14.33 D
Stock Options (right to buy) (3) (3) Class A common stock 43,163 14.33 D
Explanation of Responses:
1. The stock options are exercisable as to 100% of the shares of Class A common stock. The option expires on May 25, 2021.
2. The stock options are exercisable as to 100% of the shares of Class A common stock. The option expires on July 11, 2022.
3. The stock options are exercisable as to 100% of the shares of Class A common stock. The option expires on May 7, 2020.
Remarks:
This Form 3 is being filed in connection with the effectiveness of the Registration Statement on Form S-1 (Registration No. 333-216404) of Select Energy Services, Inc. See attached for Exhibit 24 - Power of Attorney
/s/ Eric Mattson by Adam Law, as Attorney-in-Fact 04/20/2017
** Signature of Reporting Person Date

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

* If the form is filed by more than one reporting person, see Instruction 5 (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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.