April 26, 2018 - DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No. )

Filed by the Registrant x

Filed by a Party other than the Registrant o

Check the appropriate box:
o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material under §240.14a-12

ProPetro Holding Corp.
(Name of Registrant as Specified In Its Charter)


(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):
x	No fee required.
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
	(1)		Title of each class of securities to which transaction applies:

	(2)		Aggregate number of securities to which transaction applies:

	(3)		Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

	(4)		Proposed maximum aggregate value of transaction:

	(5)		Total fee paid:

o	Fee paid previously with preliminary materials.
o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
	(1)	Amount Previously Paid:

	(2)	Form, Schedule or Registration Statement No.:

	(3)	Filing Party:

	(4)	Date Filed:

PROPETRO HOLDING CORP. Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be held on June 15, 2018 To be held at The Petroleum Museum of Midland, 1500 W. Interstate 20, Midland, TX 79701 This is not a ballot. You cannot use this notice to vote your shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and Annual Report to Stockholders are available at www.viewproxy.com/propetro/2018 If you want to receive a paper or e-mail copy of these documents, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy as instructed below on or before June 7, 2018 to facilitate timely delivery. Important information regarding the Internet availability of the Companys proxy materials, instructions for accessing your proxy materials and voting online and instructions for requesting paper or e-mail copies of your proxy materials are provided reverse side of this Notice. on the STOCKHOLDERS ARE CORDIALLY INVITED TO ATTEND THE ANNUAL MEETING AND VOTE IN PERSON. The Securities and Exchange Commission rules permit us to make our proxy materials available to our stockholders via the Internet. Material for this annual meeting and future meetings may be requested by one of the following methods: To view your proxy materials online, go to www.viewproxy.com/propetro/2018 Have the 11 digit control number available when you access the website and follow the instructions. If requesting your proxy materials by phone, call 877-777-2857 TOLL FREE. Have the 11 digit control number available when you call. requests@viewproxy.com * If requesting your proxy materials by e-mail, please send a blank e-mail with the company name and your 11 digit control number (located below) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material. You must use the 11 digit control number located in the box below. CONTROL NO. E-MAIL TELEPHONE INTERNET To the Stockholders of PROPETRO HOLDING CORP. Notice is hereby given that the Annual Meeting of Stockholders of ProPetro Holding Corp. will be held on June 15, 2018 at 9:00 a.m. Central Time at The Petroleum Museum of Midland, 1500 W. Interstate 20, Midland, Texas 79701 for the following purposes: 1. Election of Directors. (01) Dale Redman(02) Spencer D. Armour, III (03) Steven Beal(04) Anthony Best (05) Pryor Blackwell (06) Schuyler E. Coppedge (07) Alan E. Douglas (08) Peter Labbat(09) Jack B. Moore 2. To ratify the appointment of Deloitte & Touche LLP to serve as the Companys independent registered public accounting firm for the year ending December 31, 2018. The Board of Directors recommends a vote FOR the election of all of the director nominees listed in Proposal 1 and FOR Proposal 2.

PROPETRO HOLDING CORP The Petroleum Museum of Midland, 1500 W. Interstate 20, Midland, TX 79701 The following proxy materials are available to you for review at: www.viewproxy.com/propetro/2018 Proxy Statement 2017 Annual Report to Stockholders ACCESSING YOUR PROXY MATERIALS ONLINE Have this notice available when you request a paper copy of the proxy materials or to vote your proxy electronically. You must reference your control number to vote by Internet or request a paper copy of the proxy materials. You May Vote Your Proxy When You View The Materials On The Internet You Will Be Asked To Follow The Prompts To Vote Your Shares Your electronic vote authorizes the named proxies to vote your shares in the same manner as if you marked, signed, dated and returned the proxy card. REQUESTING A PAPER COPY OF THE PROXY MATERIALS By telephone please call 1-877-777-2857 or By logging onto http://www.viewproxy.com/propetro/2018 or By email at: requests@viewproxy.com Please include the company name and your control number in the subject line.