SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 1)*

Ranger Energy Services, Inc.

(Name of Issuer)

Class A Common Stock, $0.01 par value per share

(Title of Class of Securities)

75282U104

(CUSIP Number)

David Oestreicher, Esq.

T. Rowe Price Associates, Inc.

100 East Pratt Street - 13th Floor

Baltimore, Maryland 21202

(410) 345-2000

Michael R. Patrone, Esq.

Goodwin Procter LLP

620 Eighth Avenue

New York, NY 10011

(212) 756-2000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

May 11, 2020

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), Rule 13d-1(f) or Rule 13d-1(g), check the following box.  ☒

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This Amendment No. 1 (this “Amendment No. 1”) amends and supplements the statement on Schedule 13D filed with the Securities and Exchange Commission on March 18, 2020. Capitalized terms used but not otherwise defined herein have the meanings set forth in the original Schedule 13D. Except as specifically supplemented and amended by this Amendment No. 1, items in the Schedule 13D remain unchanged.

Item 4 of the Schedule 13D is hereby amended and supplemented by deleting the third and fourth paragraphs thereof and replacing it with the following:

On the evening of March 12, 2020, CSL and Bayou Holding Company (together, the “Offering Parties”) informed T. Rowe Price Associates that the Offering Parties had delivered a non-binding Offer (the “Offer Letter”) to the Issuer to acquire all of the issued and outstanding publicly held shares of Class A Common Stock of the Issuer that are not directly owned by the Offering Parties and certain other holders (including certain Funds and Accounts) in exchange for $6.00 in cash for each such share of Class A Common Stock. The Issuer subsequently formed a special committee (the “Special Committee”) of the board of directors of the Issuer for the purpose of, among other things, considering the proposals set forth in the Offer Letter.

On May 11, 2020, the Offering Parties delivered a letter to the Special Committee stating that they were withdrawing the non-binding proposal set forth in the Offer Letter with immediate effect. Upon the Offering Parties’ delivery of the letter withdrawing the non-binding proposal, the Reporting Parties withdrew their letter of support to the Offering Parties also with immediate effect. The Reporting Parties intend to continue engaging in amicable discussions with the Offering Parties and the Issuer.

Item 5 of the Schedule 13D is hereby amended and supplemented by deleting the first paragraph thereof and replacing it with the following:

The information provided or incorporated by reference in Item 4 is hereby incorporated herein by reference.

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct.