UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

Form6-K

REPORTOF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE

SECURITIESEXCHANGE ACT OF 1934

Forthe month of July 2025

CommissionFile Number: 001-38091

NATIONALENERGY SERVICES REUNITED CORP.

(Exactname of Registrant as specified in its charter)

NotApplicable

(Translationof registrant’s name into English)

777Post Oak Blvd., Suite 730

Houston,Texas 77056

(Addressof principal executive office)

Indicateby check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form40-F ☐

Indicateby check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicateby check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

Theinformation and related exhibits contained in this Report on Form 6-K are hereby incorporated by reference into National Energy ServicesReunited Corp.’s Registration Statement on Form S-8 (File No. 333-280902).

INFORMATIONCONTAINED IN THIS FORM 6-K REPORT

Completionof Exchange Offer and Consent Solicitation and Notice to Exercise Right to Exchange Remaining Outstanding Warrants

OnJuly 3, 2025, National Energy Services Reunited Corp., a British Virgin Islands company (the “Company”), issueda press release announcing the closing of its previously announced exchange offer (the “Offer”) and consentsolicitation (the “Consent Solicitation”) relating to its outstanding warrants (the “Warrants”)to purchase ordinary shares of the Company, no par value (the “Ordinary Shares”), to receive 0.10 OrdinaryShares in exchange for each outstanding Warrant tendered by the holder and exchanged pursuant to the Offer. The Warrants trade on theNasdaq Capital Market under the symbol “NESRW.”

TheOffer and Consent Solicitation expired at 11:59 P.M., Eastern Time on June 30, 2025. The Company has been advised that a total of 34,136,353Warrants, or approximately 96.05% of the outstanding Warrants were validly tendered and not validly withdrawn in the Offer andConsent Solicitation, and therefore such Warrants consented to the Warrant Amendment (as defined below). Because consents were receivedfrom holders of more than 50% of the Company’s outstanding Warrants, the Warrant Amendment was approved.

TheCompany also announced that it intends to exchange all remaining untendered Warrants in accordance with the terms of the warrant agreement,as amended by the warrant amendment dated July 3, 2025 (the “Warrant Amendment”), by and between the Companyand Continental Stock Transfer & Trust Company (the “Warrant Agent”), which governs the Warrants (the “WarrantAgreement”).

TheWarrant Amendment amends the Warrant Agreement to provide the Company with the right to elect to mandatorily exchange the Company’sremaining outstanding Warrants for Ordinary Shares at an exchange ratio of 0.09 Ordinary Shares for each Warrant, which is a ratio 10%less than the exchange ratio applicable to the Offer. Pursuant to the Warrant Amendment, the Company has the right to require the exchangeof not less than all of the Warrants at any time while such Warrants are exercisable and prior to their expiration upon notice to theregistered holders of the outstanding Warrants at least fifteen days prior to the date of exchange fixed by the Company.

TheCompany will exercise its right to exchange all remaining outstanding Warrants for Ordinary Shares in accordance with the terms of theWarrant Amendment and has fixed July 18, 2025 as the exchange date.

Theforegoing description of the Warrant Amendment is qualified in its entirety by reference to the Warrant Amendment, which is filed asExhibit 10.1 to this Current Report on Form 6-K and is incorporated by reference herein.

Acopy of the press release announcing the settlement of the Offer and the Company’s exercise of its rights to exchange the untenderedWarrants is attached as Exhibit 99.1 and is incorporated by reference herein.

Thefollowing exhibits are being filed herewith:

SIGNATURES

Pursuantto the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on itsbehalf by the undersigned hereunto duly authorized.

Exhibit10.1

AMENDMENTNO. 1 TO WARRANT AGREEMENT

ThisAmendment (this “Amendment”) is made as of July 3, 2025, by and between National Energy Services Reunited Corp.,a British Virgin Islands company (the “Company”), and Continental Stock Transfer & Trust Company, a NewYork corporation, as warrant agent (the “Warrant Agent”), and constitutes an amendment to the Warrant Agreement,dated as of May 11, 2017, by and between the Company and the Warrant Agent (the “Warrant Agreement”). Capitalizedterms used but not otherwise defined in this Amendment shall have the meanings given to such terms in the Warrant Agreement.

WHEREAS,Section 9.8 of the Warrant Agreement provides that the Company and the Warrant Agent may amend, subject to certain conditions providedtherein, the Warrant Agreement with the written consent or vote of the registered holders of a majority of the outstanding Warrants;

WHEREAS,the Company desires to amend the Warrant Agreement to provide the Company with the right to require the registered holders of the Warrantsto exchange all of the outstanding Warrants for Ordinary Shares, on the terms and subject to the conditions set forth herein; and

WHEREAS,in the exchange offer and consent solicitation undertaken by the Company pursuant to the Registration Statement on Form F-4 filed withthe U.S. Securities and Exchange Commission, the registered holders of more than 50% of the number of the then outstanding Warrants haveconsented to and approved this Amendment.

NOW,THEREFORE, in consideration of the mutual agreements contained herein and other good and valuable consideration, the receipt and sufficiencyof which are hereby acknowledged, and intending to be legally bound hereby, the parties hereto agree to amend the Warrant Agreement asset forth herein.

6.5.1Company Election to Exchange. Notwithstanding any other provision in this Agreement to the contrary, all (and not less than all)of the outstanding Warrants may be exchanged, at the option of the Company, at any time while they are exercisable and prior to theirexpiration, at the office of the Warrant Agent, upon notice to the registered holders of the then outstanding Warrants, as describedin Section 6.5.2 below, for Ordinary Shares (or any Alternative Issuance pursuant to Section 4.5), at the exchange rate of 0.09 OrdinaryShares (or any Alternative Issuance pursuant to Section 4.5 for each Warrant held by the registered holder thereof (the “Consideration”)(subject to equitable adjustment by the Company in the event of any share splits, share dividends, recapitalizations or similar transactionwith respect to the Ordinary Shares). In lieu of issuing fractional shares, any registered holder of Warrants who would otherwise havebeen entitled to receive fractional shares as Consideration will, after aggregating all such fractional shares of such registered holder,receive one additional whole Ordinary Share in lieu of such fractional shares.

6.5.2Date Fixed for, and Notice of, Exchange. In the event that the Company elects to exchange all of the Warrants, the Company shallfix a date for the exchange (the “Exchange Date”). Notice of exchange shall be mailed by first class mail,postage prepaid, by the Company not less than fifteen (15) days prior to the Exchange Date to the registered holders at their last addressesas they shall appear on the registration books. Any notice mailed in the manner herein provided shall be conclusively presumed to havebeen duly given whether or not the registered holder received such notice. The Company will make a public announcement of its electionfollowing the mailing of such notice.

6.5.3Exercise After Notice of Exchange. The Warrants may be exercised, for cash at any time after notice of exchange shall have beengiven by the Company pursuant to Section 6.5.2 hereof and prior to the Exchange Date. On and after the Exchange Date, the registeredholder of the Warrants shall have no further rights except to receive, upon surrender of the Warrants, the Consideration.”

2.1Severability. This Amendment shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shallnot affect the validity or enforceability of this Amendment or of any other term or provision hereof. Furthermore, in lieu of any suchinvalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Amendment a provisionas similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable.

2.2Applicable Law. The validity, interpretation, and performance of this Amendment and of the Warrants shall be governed in all respectsby the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of thesubstantive laws of another jurisdiction. The Company hereby agrees that any action, proceeding or claim against it arising out of orrelating in any way to this Amendment shall be brought and enforced in the courts of the State of New York or the United States DistrictCourt for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive forumfor such action, proceeding or claim. The Company hereby waives any objection to such exclusive jurisdiction and that such courts representan inconvenient forum. Notwithstanding the foregoing, the provisions of this paragraph will not apply to suits brought to enforce anyliability or duty created by the Securities Exchange Act of 1934, as amended, or any other claim for which the federal district courtsof the United States of America are the sole and exclusive forum.

2.3Counterparts. This Amendment may be executed in any number of counterparts (which may include counterparts delivered by any standardform of telecommunication) and each of such counterparts shall for all purposes be deemed to be an original, and all such counterpartsshall together constitute but one and the same instrument. The words “execution,” “signed,” “signature,”and words of like import in this Amendment or in any other certificate, agreement or document related to this Amendment, if any, shallinclude images of manually executed signatures transmitted by facsimile or other electronic format (including, without limitation, “pdf,”“tif” or “jpg”) and other electronic signatures (including, without limitation, DocuSign and Adobesign).The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated,sent, communicated, received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manuallyexecuted signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law, including the FederalElectronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicablelaw, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code.

2.4Effect of Headings. The section headings herein are for convenience only and are not part of this Amendment and shall not affect theinterpretation thereof.

2.5Entire Agreement. The Warrant Agreement, as modified by this Amendment, constitutes the entire understanding of the parties and supersedesall prior agreements, understandings, arrangements, promises and commitments, whether written or oral, express or implied, relating tothe subject matter hereof, and all such prior agreements, understandings, arrangements, promises and commitments are hereby canceledand terminated.

[SignaturePage Follows]

INWITNESS WHEREOF, each of the parties has caused this Amendment to be duly executed as of the date first above written.

Exhibit99.1

NationalEnergy Services Reunited Corp. Announces Completion of Exchange Offer and Consent Solicitation and Notice to Exercise Right to ExchangeRemaining Outstanding Warrants

HOUSTON,Texas – July 3, 2025 – National Energy Services Reunited Corp. (“NESR” or the “Company”)(Nasdaq: NESR) (Nasdaq: NESRW), an international, industry-leading provider of integrated energy services in the Middle East and NorthAfrica (“MENA”) region, announced today the completion of its previously announced exchange offer (the “Offer”)and consent solicitation (the “Consent Solicitation”) relating to its outstanding warrants (the “Warrants”)to purchase ordinary shares of the Company, no par value (the “Ordinary Shares”). The Company issued 3,413,645Ordinary Shares in exchange for the Warrants tendered in the Offer.

TheCompany also entered into the related amendment to the warrant agreement governing the Warrants (the “Warrant Amendment”)and announced that it will exercise its right, in accordance with the terms of the Warrant Amendment, to exchange all remaining untenderedWarrants at an exchange ratio of 0.09 Ordinary Shares for each Warrant. The Company has fixed the date for such exchange as July 18,2025.

Asa result of the completion of the Exchange Offer and the upcoming exchange for the remaining untendered Warrants, no Warrants will remainoutstanding. Accordingly, the Warrants are expected to be suspended from trading on Nasdaq and be delisted. The Ordinary Shareswill continue to be listed and trade on Nasdaq under the symbol NESR.

TheCompany engaged BTIG, LLC as the dealer manager for the Offer and Consent Solicitation. Sodali & Co. served as the information agentfor the Offer and Consent Solicitation, and Continental Stock Transfer & Trust Company served as the exchange agent.

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CautionaryStatement Regarding Forward-Looking Statements

Statementscontained in this press release that are not historical fact may be forward-looking within the meaning of Section 27A of the SecuritiesAct of 1933 (as amended, the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended.Such forward-looking statements may relate to, among other things, the Company’s expectations regarding the exchange offer andconsent solicitation. Such forward-looking statements do not constitute guarantees of future performance and are subject to a varietyof risks and uncertainties. Additional factors that could cause actual results to differ materially from those projected or suggestedin any forward-looking statements are contained in our filings with the Securities and Exchange Commission (the “SEC”),including those factors discussed under the caption “Risk Factors” in such filings.

Youare cautioned not to place undue reliance on forward-looking statements because of the risks and uncertainties related to them and tothe risk factors. The Company disclaims any obligation to update any forward-looking statements to reflect any new information or futureevents or circumstances or otherwise, except as required by law. You should read this communication in conjunction with other documentswhich the Company may file or furnish from time to time with the SEC.

AboutNational Energy Services Reunited Corp.

Foundedin 2017, NESR is one of the largest national oilfield services providers in the MENA and Asia Pacific regions. With over6,000 employees, representing more than 60 nationalities in 16 countries, the Company helps its customers unlock the full potential oftheir reservoirs by providing Production Services such as Hydraulic Fracturing, Cementing, Coiled Tubing, Filtration, Completions, Stimulation,Pumping and Nitrogen Services. The Company also helps its customers to access their reservoirs in a smarter and faster manner by providingDrilling and Evaluation Services such as Drilling Downhole Tools, Directional Drilling, Fishing Tools, Testing Services, Wireline, Slickline,Drilling Fluids and Rig Services.

Disclaimer

Thiscommunication is for informational purposes only and is neither an offer to purchase, nor a solicitation of an offer to sell, subscribefor or buy, any securities, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contraventionof applicable law. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of theSecurities Act.

Forinquiries regarding NESR, please contact:

BlakeGendron

NationalEnergy Services Reunited Corp.

832-925-3777

investors@nesr.com