NC NACCO Industries Inc

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Schedule 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 3)

NACCO Industries, Inc.

(Name of Issuer)

Class A Common Stock, par value $1.00 per share

(Title of Class of Securities)

629579103

(CUSIP Number)

Britton T. Taplin

5910 South University Boulevard

Unit C-18

Greenwood Village, Colorado 80121-2879

(303) 892-9400

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

February 2024

(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 §§240.13d-1(e), 240.13d-1(f) or 240.13d-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 (“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).

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Part II to Schedule D

This Amendment No. 3 to Schedule 13D (this “Amendment No. 3”) is hereby filed to update and supplement certain information with respect to the shares of Class A Common Stock (the “Class A Common”) of NACCO Industries, Inc. (the “Issuer”) held by Abigail II LLC, a Colorado limited liability company (“Abigail II”), that appeared in the Schedule 13D on November 20, 2020 (the “Initial Filing”), as amended on February 11, 2022 (the “Amendment No. 1) and as further amended on February 10, 2023 (the “Amendment No. 2” and, collectively, the “Filings”). This Amendment No. 3 reflects the acquisitions and/or dispositions of shares of Class A Common by certain Reporting Persons. Capitalized terms used herein but not defined herein have the meanings assigned to them in the Filings.

Item 5. Interest in Securities of the Issuer.

The statements under the heading Britton T. Taplin which appear in the Filings, are hereby deleted and replaced in their entirety by the following:

Britton T. Taplin. Mr. Britton Taplin has the sole power to vote and dispose of 58,689 shares of Class A Common. Mr. Britton Taplin is deemed to share with his spouse (DiAhn E. Taplin) the power to vote and dispose of 5,755 shares of Class A Common and is deemed to share with the Taplin Family the power to vote and dispose of 56,120 shares of Class A Common held in trust for Abigail, LLC for which Mr. Taplin is a co-trustee with the Taplin Family and is deemed to share with the Taplin Family the power to vote and dispose of 349,100 shares of Class A Common held in a trust for Abigail II. Collectively, the 469,664 shares of Class A Common beneficially owned by Mr. Britton Taplin constitute approximately 8.00% of the Class A Common outstanding as of December 31, 2023.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

The information provided with respect to the Stockholders’ Agreement is hereby amended by inserting at the end thereof the following:

Effective February 9, 2024, each of the Issuer and the Participating Stockholders executed and delivered an Amendment to the Stockholders’ Agreement amending the Amended and Restated Stockholders’ Agreement to add additional and remove certain Participating Stockholders under the Stockholders’ Agreement. A copy of the Fifth Amendment to the Amended and Restated Stockholders’ Agreement is attached hereto as Exhibit 10 and is incorporated herein in its entirety.

Item 7. Material to be Filed as Exhibits.

[Signatures begin on the next page.]

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SIGNATURES

After reasonable inquiry and to the best of our knowledge and belief, we certify that the information set forth in this statement is true, complete and correct.

Date: February 12, 2024

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