Exhibit 10.1

AMENDMENT NO. 3

This AMENDMENT NO. 3 (the “Amendment”) dated as of October 31, 2014 (the “Effective Date”) is among CARBO Ceramics Inc., a Delaware corporation (the “Borrower”), the Lenders (as defined below) and Wells Fargo Bank, National Association, as administrative agent (in such capacity, the “Administrative Agent”), as swing line lender (the “Swing Line Lender”), and as issuing lender (in such capacity, the “Issuing Lender”) for such Lenders.

RECITALS

A. The Borrower is party to that certain Credit Agreement dated as of January 29, 2010, among the Borrower, the lenders party thereto from time to time (the “Lenders”), the Administrative Agent, the Swing Line Lender, and the Issuing Lender (as may be amended, restated or otherwise modified from time to time, the “Credit Agreement”).

B. The Borrower, the Lenders, the Administrative Agent, the Swing Line Lender, and the Issuing Lender wish to, subject to the terms and conditions of this Amendment, (i) increase the aggregate Revolving Commitments under, and as defined in, the Credit Agreement, and (ii) extend the Maturity Date under, and as defined in, the Credit Agreement, in each case, as provided herein.

THEREFORE, the Borrower, the Lenders, the Administrative Agent, the Swing Line Lender, and the Issuing Lender hereby agree as follows:

Section 1. Defined Terms. As used in this Amendment, each of the terms defined in the opening paragraph and the Recitals above shall have the meanings assigned to such terms therein. Each term defined in the Credit Agreement and used herein without definition shall have the meaning assigned to such term in the Credit Agreement, unless expressly provided to the contrary.

Section 2. Other Definitional Provisions. Article, Section, Schedule, and Exhibit references are to Articles and Sections of and Schedules and Exhibits to this Amendment, unless otherwise specified. All references to instruments, documents, contracts, and agreements are references to such instruments, documents, contracts, and agreements as the same may be amended, supplemented, and otherwise modified from time to time, unless otherwise specified. The words “hereof,” “herein,” and “hereunder” and words of similar import when used in this Amendment shall refer to this Amendment as a whole and not to any particular provision of this Amendment. The term “including” means “including, without limitation.” Paragraph headings have been inserted in this Amendment as a matter of convenience for reference only and it is agreed that such paragraph headings are not a part of this Amendment and shall not be used in the interpretation of any provision of this Amendment.

Section 3. Amendments to Credit Agreement.

(a) Section 1.1 of the Credit Agreement is hereby amended by adding the following new definitions:

“Amendment No. 3 Effective Date” means October 31, 2014.

(b) Section 1.1 of the Credit Agreement is hereby amended by restating the definition of “Maturity Date” in its entirety as follows:

“Maturity Date” means the earlier of (a) October 31, 2019 and (b) the earlier termination in whole of the Revolving Commitments pursuant to Section 2.1(b)(i) or Article 7.

(c) Section 1.1 of the Credit Agreement is hereby amended by restating the last sentence of the definition of “Revolving Commitment” as follows:

The initial aggregate Revolving Commitment on the Amendment No. 3 Effective Date is $100,000,000.

(d) Schedule II to the Credit Agreement is hereby deleted in its entirety and replaced with Schedule II attached hereto.

Section 4. Borrower Representations and Warranties. The Borrower represents and warrants that: (a) the representations and warranties contained in the Credit Agreement, as amended hereby, and the representations and warranties contained in the other Credit Documents, are true and correct in all material respects on and as of the Effective Date as if made on as and as of such date except to the extent that any such representation or warranty expressly relates solely to an earlier date, in which case such representation or warranty is true and correct in all material respects as of such earlier date; (b) no Default has occurred and is continuing; (c) the execution, delivery and performance of this Amendment are within the corporate power and authority of the Borrower and have been duly authorized by appropriate corporate and governing action and proceedings; (d) this Amendment constitutes the legal, valid, and binding obligation of the Borrower enforceable in accordance with its terms, except as limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws affecting the rights of creditors generally and general principles of equity; (e) as of the Effective Date, (i) there are no Material Domestic Subsidiaries and (ii) no Non-Material Domestic Subsidiary is required to be a Guarantor pursuant to Section 5.6 of the Credit Agreement and (f) there are no governmental or other third party consents, licenses and approvals required in connection with the execution, delivery, performance, validity and enforceability of this Amendment.

Section 5. Conditions to Effectiveness. This Amendment shall become effective on the Effective Date and enforceable against the parties hereto upon the occurrence of the following conditions precedent:

(a) The Administrative Agent shall have received multiple original counterparts, as requested by the Administrative Agent, of:

(1) This Amendment duly and validly executed and delivered by duly authorized officers of the Borrower, the Administrative Agent, the Swing Line Lender, the Issuing Lender, and the Lenders;

2

(2) a Note payable to the order of each Lender in the amount of its Revolving Commitment duly and validly executed and delivered by a duly authorized officer of the Borrower;

(3) a secretary’s certificate from the Borrower certifying the Borrower’s authorizing resolutions and organizational documents;

(4) a certificate of good standing and existence for the Borrower in the state in which the Borrower is organized, which certificate shall be dated a date not earlier than thirty (30) days prior to Effective Date; and

(5) a legal opinion of outside counsel to the Borrower, in form and substance reasonably acceptable to the Administrative Agent.

(b) No Default shall have occurred and be continuing as of the Effective Date.

(c) The representations and warranties in this Amendment shall be true and correct.

(d) The Borrower shall have paid (i) to the Administrative Agent the fees described in that certain Increase and Extension Fee Letter dated October 31, 2014 between the Borrower and the Administrative Agent and (ii) all other costs and expenses which have been invoiced and are payable pursuant to Section 10.1 of the Credit Agreement.

Section 6. Acknowledgments and Agreements.

(b) The Borrower acknowledges that on the date hereof all Obligations are payable without defense, offset, counterclaim or recoupment.

(c) The Administrative Agent and the Lenders hereby expressly reserve all of their rights, remedies, and claims under the Credit Documents. Nothing in this Amendment shall constitute a waiver or relinquishment of (i) any Default or Event of Default under any of the Credit Documents, (ii) any of the agreements, terms or conditions contained in any of the Credit Documents, (iii) any rights or remedies of the Administrative Agent or any Lender with respect to the Credit Documents or (iv) the rights of the Administrative Agent or any Lender to collect the full amounts owing to them under the Credit Documents.

(d) Each of the Borrower, the Administrative Agent, the Swing Line Lender, the Issuing Lender and the Lenders does hereby adopt, ratify, and confirm the Credit Agreement, as amended hereby, and acknowledges and agrees that the Credit Agreement, as amended hereby, is and remains in full force and effect, and the Borrower acknowledges and agrees that its liabilities and obligations under the Credit Agreement, as amended hereby, are not impaired in any respect by this Amendment.

(e) From and after the Effective Date, all references to the Credit Agreement and the Credit Documents shall mean such Credit Agreement and such Credit Documents as amended by this Amendment.

3

(f) This Amendment is a Credit Document for the purposes of the provisions of the other Credit Documents. Without limiting the foregoing, any breach of representations, warranties, and covenants under this Amendment shall be a Default or Event of Default, as applicable, under the Credit Agreement.

Section 7. Counterparts. This Amendment may be signed in any number of counterparts, each of which shall be an original and all of which, taken together, constitute a single instrument. This Amendment may be executed by facsimile signature and all such signatures shall be effective as originals.

Section 8. Successors and Assigns. This Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns permitted pursuant to the Credit Agreement.

Section 9. Invalidity. In the event that any one or more of the provisions contained in this Amendment shall for any reason be held invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provision of this Amendment.

Section 10. Governing Law. This Amendment shall be deemed to be a contract made under and shall be governed by and construed in accordance with the laws of the State of Texas.

Section 11. USA PATRIOT Act. Each Lender that is subject to the PATRIOT Act and the Administrative Agent (for itself and not on behalf of any Lender) hereby notifies each Credit Party that pursuant to the requirements of the PATRIOT Act it is required to obtain, verify and record information that identifies such Credit Party, which information includes the name and address of such Credit Party and other information that will allow such Lender or the Administrative Agent, as applicable, to identify such Credit Party in accordance with the PATRIOT Act.

Section 12. Entire Agreement. THIS AMENDMENT, THE CREDIT AGREEMENT AS AMENDED BY THIS AMENDMENT, THE NOTES, AND THE OTHER CREDIT DOCUMENTS CONSTITUTE THE ENTIRE UNDERSTANDING AMONG THE PARTIES HERETO WITH RESPECT TO THE SUBJECT MATTER HEREOF AND SUPERSEDE ANY PRIOR AGREEMENTS, WRITTEN OR ORAL, WITH RESPECT THERETO.

THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

[signature pages follow]

4

EXECUTED effective as of the date first above written.

Signature Page to Amendment No. 3

Signature Page to Amendment No. 3

SCHEDULE II

Commitments, Contact Information