Fourth Amendment, dated as of

Exhibit 10.4

This Fourth Amendment to Memorandum of Agreement #1450 (MOA) is made on 09/09/2020, by and between A & M Products Manufacturing Company, 1221 Broadway, Oakland, California, 94612, hereinafter “Buyer” and Oil-Dri Corporation of America, 410 N. Michigan Avenue, Chicago, Illinois 60611, hereinafter “Seller”.

RECITALS

A. Buyer and Seller are parties to Memorandum of Agreement (“MOA”), as amended, dated March 12, 2001, as amended by the First Amendment, dated December 13, 2002, and the Second Amendment, dated October 15, 2007, and the Third Amendment, dated May 27, 2016 (the “Original Agreement”); and

B. Seller and Buyer wish to amend the Original Agreement as hereinafter set forth.

NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged and accepted, the parties hereby agree to amend the Original Agreement as follows:

1. Schedule 1. Section B. Term. is amended and restated in its entirety to read as follows:

“The initial term of this Agreement (“Initial Term”) will be for a period of [***], commencing as of a Commencement Date of March 12, 2001 and expiring at [***] unless sooner terminated pursuant to this Agreement.”

2. Schedule 1. Section C. Extension of Term. is amended and restated in its entirety to read as follows:

“BUYER may extend this Agreement on all of the same terms and conditions herein for any period between six (6) months to twenty four (24) months from the date of expiration of the Initial Term, provided BUYER notifies SELLER in writing thereof not less than one hundred eighty (180) days prior to the expiration of the Initial Term specified in SECTION B above. Should BUYER extend the Initial Term, the meaning of “Term” in this Agreement shall apply to such extension as well.”

3. Prior to entering into this Fourth Amendment, BUYER properly exercised its right to extend this Agreement for an additional [***], in accordance with Schedule 1, Section C of the Agreement. Accordingly, the Term will expire at [***].

4. The terms of the Original Agreement shall remain in full force and effect except as amended, modified and superseded hereby. Capitalized terms not otherwise defined herein shall have the same meanings as set forth in the Original Agreement.

5. The parties represent and warrant to each other that any person or entity purporting to have the authority to enter into this Amendment on behalf of or for the benefit of a party has such authority.

6. This Amendment may be executed by use of electronic signature and may be executed in counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same agreement. Delivery of an executed counterpart of this agreement by electronic means, including by an electronic signature service provider complying with the provisions of the federal

E-SIGN Act, the Uniform Electronic Transactions Act and/or other applicable law, portable document format (PDF) or by other electronic means shall be equally

effective as delivery of an original by mail.

[The remainder of this page is intentionally left blank. Signature page follows.]

IN WITNESS WHEREOF, the undersigned have caused this Amendment to be signed, all as of the date first written above.

BUYER: A & M Products Manufacturing Company

By: /s/ Michael Holly

SELLER: Oil Dri Corporation of America

By: /s/ Dan Jaffee