SIXTH AMENDMENT TO AMENDED AND RESTATED STOCKHOLDERS’ AGREEMENT

Exhibit 26

SIXTH AMENDMENT TO AMENDED AND

RESTATED STOCKHOLDERS’ AGREEMENT

This SIXTH AMENDMENT TO AMENDED AND RESTATED STOCKHOLDERS’ AGREEMENT, dated as of December 16, 2024 (this “Amendment”), by and among the Depository, NACCO Industries, Inc., a Delaware corporation (the “Corporation”), the new Participating Stockholder identified on the signature page hereto (the New Participating Stockholder”) and the Participating Stockholders under the Amended and Restated Stockholders’ Agreement, dated as of September 29, 2017 (as amended, the “Stockholders’ Agreement”), by and among the Depository, the Corporation and the Participating Stockholders. Capitalized terms defined in the Stockholders’ Agreement are used herein as so defined.

This Amendment (i) sets forth the terms and conditions on which the New Participating Stockholder will join in and become a party to the Stockholders’ Agreement and (ii) amends and restates Section 7.1 of the Stockholders’ Agreement.

Pursuant to Section 8 of the Stockholders’ Agreement, the Stockholders’ Agreement may be amended by a written instrument that (i) refers specifically to the Stockholders’ Agreement and (ii) is executed and delivered by Participating Stockholders owning 66 percent of the shares of Class B Common Stock subject to the Stockholders’ Agreement.

In consideration of the mutual promises hereinafter set forth and other good and valuable consideration had and received, the parties hereto agree as follows:

1. Representations and Warranties. The New Participating Stockholder represents and warrants to the other Participating Stockholders and the Corporation as follows:

(a) The New Participating Stockholder is the beneficial owner of, or simultaneously with the execution hereof will acquire and be deemed to be the beneficial owner of, the shares of Class B Common Stock identified below the New Participating Stockholder’s name on the signature page hereto (except as otherwise described thereon), and except as otherwise described thereon the New Participating Stockholder does not own of record or beneficially or have any interest in any other shares of Class B Common Stock or any options to purchase or rights to subscribe or otherwise acquire any other shares of Class B Common Stock other than pursuant to the Stockholders’ Agreement;

(b) The New Participating Stockholder has the right, power and authority to execute and deliver this Amendment and to perform the New Participating Stockholder’s obligations hereunder and under the Stockholders’ Agreement; if this Amendment is being executed by a trustee on behalf of a trust, such trustee has full right, power and authority to enter into this Amendment on behalf of the trust and to bind the trust and its beneficiaries to the terms hereof; if this Amendment is being executed on behalf of a Participating Stockholder Organization, the person executing this Amendment is a duly authorized representative of such Participating Stockholder Organization with full right, power and authority to execute and deliver this Amendment on behalf of the Participating Stockholder Organization and to bind the Participating Stockholder Organization to the

terms hereof; the execution, delivery and performance of this Amendment by the New Participating Stockholder will not constitute a violation of, conflict with or result in a default under (i) any contract, understanding or arrangement to which the New Participating Stockholder is a party or by which the New Participating Stockholder is bound or require the consent of any other person or any party pursuant thereto; (ii) any organizational, charter or other governance documents (including, without limitation, any partnership agreement, certificate of incorporation, or bylaws) of the New Participating Stockholder, (iii) any judgment, decree or order applicable to the New Participating Stockholder; or (iv) any law, rule or regulation of any governmental body;

(c) This Amendment and the Stockholders’ Agreement constitute legal, valid and binding agreements on the part of the New Participating Stockholder; the shares of Class B Common Stock owned beneficially by the New Participating Stockholder are fully paid and nonassessable; and

(d) The shares of Class B Common Stock owned beneficially by the New Participating Stockholder are now held by the New Participating Stockholder, free and clear of all adverse claims, liens, encumbrances and security interests (except as created by the Stockholders’ Agreement and any Amendments thereto, including this Amendment, and the Restated Certificate).

2. Address for Notices. The address for all notices to the New Participating Stockholder provided pursuant to the Stockholders’ Agreement shall be the address set forth below the New Participating Stockholder’s name on the signature page hereto, or to such other address as the New Participating Stockholder may specify to the Depository.

3. Agreement to be Bound by Stockholders’ Agreement. The New Participating Stockholder agrees to be bound by all of the terms and provisions of the Stockholders’ Agreement applicable to Participating Stockholders.

4. Beneficiaries. The New Participating Stockholder acknowledges that the Corporation and each Participating Stockholder is a beneficiary of this Amendment.

5. Amendment of Stockholders’ Agreement. The Stockholders’ Agreement is hereby amended to add the New Participating Stockholder as a Participating Stockholder.

6. Signature of Amendment by Trusts, Minors and Incompetents.

(a) In order for a trust exclusively (as defined in Section 1.11 of the Stockholders’ Agreement) for the benefit of a Family Member or Members to be considered a Participating Stockholder:

(i) the trustee and all adult beneficiaries of such trusts having a current trust interest (as well as all Charitable Organization beneficiaries having a current trust interest) shall have previously signed the Stockholders’ Agreement or shall sign this Amendment as a Participating Stockholder;

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(ii) the trustee and a parent or legal guardian, for trusts with minor beneficiaries having a current trust interest, shall sign this Amendment on behalf of any such minor beneficiaries; or (iii) the trustee and legal guardian, if any, for trusts with incompetent beneficiaries having a current trust interest, shall sign this Amendment on behalf of any such incompetent beneficiaries.

(b) If, at any time, any trust shall have an adult beneficiary (and such beneficiary is not incompetent) having a current trust interest or an ascertainable Charitable Organization beneficiary having a current trust interest and if such beneficiary has not previously signed the Stockholders’ Agreement, then if such beneficiary shall fail or be unable to sign this Amendment for a period of 30 calendar days following notification to such beneficiary of the terms of this Amendment and the Stockholders’ Agreement by the Depository and following signature of this Amendment by the trustee, the trust shall thereupon cease to be a Participating Stockholder and Section 3.2 of the Stockholders’ Agreement shall then apply as if the shares of Class B Common Stock held by the trust were then to be converted. The donor of a trust that is revocable by the donor alone, during the lifetime of such donor, shall be considered the only beneficiary thereof so long as such trust is so revocable.

(c) In the case of Class B Common Stock held by a custodian under the Uniform Transfers to Minors Act (or the practical equivalent thereof) for the benefit of a minor Family Member, the custodian shall sign this Amendment on behalf of such minor if such minor is to be considered a Participating Stockholder.

(d) In the case of Class B Common Stock held in the name of a minor Family Member, a parent or legal guardian of such minor shall sign this Amendment on behalf of such minor if such minor is to be considered a Participating Stockholder.

(e) In the case of Class B Common Stock held in the name of an incompetent Family Member, the legal guardian of such incompetent shall sign this Amendment on behalf of such incompetent if such incompetent is to be considered a Participating Stockholder.

(f) When a minor described in Section 6(c) or (d) reaches the age of majority, or an incompetent described in Section 6(e) is no longer impaired by such disability and has reached the age of majority, such Family Member shall execute and deliver an Amendment which has been executed and delivered by the Participating Stockholders (or their attorney-in-fact), the Corporation and the Depository. If such Family Member shall fail or be unable to sign such Amendment for a period of 30 calendar days following notification to such Family Member of the terms of the Stockholders’ Agreement by the Depository, such Family Member shall thereupon cease to be a Participating Stockholder and Section 3.2 of the Stockholders’ Agreement shall then apply as if the shares of Class B Common Stock were then to be converted.

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7. Power of Attorney. The undersigned New Participating Stockholder hereby constitutes and appoints ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇., ▇▇▇▇ ▇. ▇▇▇▇▇▇▇ and ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇ and each of them, as the true and lawful attorney or attorneys-in-fact, with full power of substitution and resubstitution, for the undersigned and in the name, place and stead of the undersigned, in any and all capacities to:

(a) execute any and all statements under Section 13 or Section 16 of the Securities Exchange Act of 1934 of beneficial ownership of shares of Class B Common Stock subject to the Stockholders’ Agreement as amended by this Amendment, including all statements on Schedule 13D and all amendments thereto, all joint filing agreements pursuant to Rule 13d-l(k) under such Exchange Act in connection with such statements, all initial statements of beneficial ownership on Form 3 and any and all other documents to be filed with the Securities and Exchange Commission, and to file the same, with all exhibits thereto, and all other documents in connection therewith, with the Securities and Exchange Commission, and

(b) execute and deliver any and all Amendments whereby a Family Member, Charitable Organization or Participating Stockholder Organization becomes a Participating Stockholder or any other amendment to the Stockholders’ Agreement in accordance with Section 8 of the Stockholders’ Agreement, other than those amendments that (i) extend the term of the Stockholders’ Agreement or (ii) amend Section 2, 3, 4 or 8 of the Stockholders’ Agreement, thereby granting to said attorney or attorneys-in-fact, and each of them, full power and authority to do so and to perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all that said attorney or attorneys-in-fact or any of them, or their substitutes or resubstitutes, may lawfully do or cause to be done by virtue of this Section 7. The grant of this power of attorney shall not be affected by any disability of the undersigned New Participating Stockholder. If applicable law requires additional or substituted language or formalities (including witnesses or acknowledgments) in order to validate the power of attorney intended to be granted by this Section 7, the New Participating Stockholder agrees to execute and deliver such additional instruments and to take such further acts as may be necessary to validate such power of attorney.

8. Amendment of Stockholders’ Agreement.

(a) Section 7.1 of the Stockholders’ Agreement is hereby amended and restated in its entirety as follows:

“All certificates representing the shares of Class B Common Stock owned of record or beneficially by the Participating Stockholders issued after the date of this Agreement shall be marked conspicuously on the face or the back thereof with a legend to the following effect:

The shares of Class B Common Stock, par value $1.00 per share, of NACCO Industries, Inc., a Delaware corporation (the “Corporation”), represented by this Certificate are subject to an Amended and Restated Stockholders’ Agreement dated as of September 29, 2017 by and among the Corporation, the Participating Stockholders (as defined therein) and the Depository (as defined therein). Pursuant to such Agreement, such shares

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may not be sold, assigned, given, exchanged or otherwise transferred or converted into shares of Class A Common Stock, par value $1.00 per share, of the Corporation (except for transfers to certain persons specified in such Agreement) except upon compliance with certain procedures, including, without limitation, offer of such shares to certain other stockholders of the Corporation and the Corporation and, in certain situations, conversion into shares of Class A Common Stock of the Corporation. The Corporation will mail to the holder hereof a copy of such Agreement without charge within five days after receipt of a written request therefor.

Each Participating Stockholder, forthwith upon becoming the record or beneficial owner of any other shares of Class B Common Stock, and each other Family Member, Charitable Organization or Participating Stockholder Organization, forthwith upon becoming a new Participating Stockholder by executing and delivering an Amendment and becoming the record or beneficial owner of any shares of Class B Common Stock shall, to the extent legally able to do so, cause all certificates representing the same to be delivered to the Depository for the application of such legend. The Depository shall return each certificate to its Participating Stockholder owner by registered mail, return receipt requested, following the application of such legend. All of the certificates representing all shares of Class B Common Stock now or hereafter owned (of record or beneficially) by any of the Participating Stockholders shall continue to bear a restrictive legend until such shares of Class B Common Stock are converted into shares of Class A Common Stock as permitted by Section 3 hereof or, if earlier, the termination of this Agreement in accordance with the terms hereof. Any Participating Stockholder may cause possession of such certificates to be given to or retained by any pledgee to be held as security in accordance with Section 2.2 hereof upon delivery to the Depository of the written agreement of the pledgee referred to in such Section.

9. Counterparts. This Amendment may be executed in multiple counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument, without production of the others.

[Signature Page Follows]

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IN WITNESS WHEREOF, the New Participating Stockholder, the Participating Stockholders, the Corporation and the Depository have executed this Amendment or caused this Amendment to be executed in their respective names, all as of the date and year first above written.

Number of Shares of

Class B Common Stock

[Signature Page to Sixth Amendment to Amended and Restated Stockholders’ Agreement]

IN WITNESS WHEREOF, the New Participating Stockholder, the Participating Stockholders, the Corporation and the Depository have executed this Amendment or caused this Amendment to be executed in their respective names, all as of the date and year first above written.

[Signature Page to Sixth Amendment to Amended and Restated Stockholders’ Agreement]

IN WITNESS WHEREOF, the New Participating Stockholder, the Participating Stockholders, the Corporation and the Depository have executed this Amendment or caused this Amendment to be executed in their respective names, all as of the date and year first above written.

[Signature Page to Sixth Amendment to Amended and Restated Stockholders’ Agreement]

IN WITNESS WHEREOF, the New Participating Stockholder, the Participating Stockholders, the Corporation and the Depository have executed this Amendment or caused this Amendment to be executed in their respective names, all as of the date and year first above written.

[Signature Page to Sixth Amendment to Amended and Restated Stockholders’ Agreement]

Exhibit A

PARTICIPATING STOCKHOLDERS

A-1

A-2

A-3

A-4

A-5

A-6

A-7