Exhibit 10.4

Donald P. Johns

Steward Capital Holdings, LP

3900 S. Overland Avenue

Springfield, MO 65807

Dear Donny:

Pursuant to the terms of that certain Loan and Security Agreement (the “ Agreement ”), dated as of March 9, 2018, by and between Full Spectrum Inc. (now known as Ondas Networks Inc.), a Delaware corporation, and each of its domestic subsidiaries signatory thereto (collectively, the “ Company ”), and Steward Capital Holdings, LP, a Delaware limited partnership, and its successors and assigns (together with its successors and assigns, “ Steward ”), the Company hereby requests:

(1) Steward’s extension and amendment of the Maturity Date, as defined in Section 1.1 of the Agreement, to read in its entirety “means September 9, 2020”;

(2) Steward’s waiver of the payment requirement under Section 2.3 of the Agreement, in connection with the currently proposed public offering by Ondas Holdings Inc. (the “ Parent ”) as described in the Parent’s Registration Statement on Form S-1 (333-230855); and

(3) Steward’s waiver of the restriction on prepayment of Indebtedness under Section 7.4 of the Agreement.

In connection with the aforesaid waivers, extension and amendment, the Company agrees to pay to Steward, upon the earlier of (a) the completion of the public offering as set forth in Section 2.3 of the Agreement and (b) ten (10) days following the Company’s receipt of Steward’s written demand therefor, a fee equal to three percent (3%) of the current outstanding principal balance of the Loan (as defined in the Agreement).

The Company acknowledges and agrees that the aforesaid waivers, extension and amendment shall not operate or be construed as a waiver of any other right or remedy reserved to Steward, or an amendment to any other provision, under the Agreement, whether of a similar or different character, and whether occurring before or after such waivers and amendment.

Please acknowledge your receipt of this request and your consent to the aforesaid waivers, extension and amendment by executing this letter and returning a .pdf to my attention at eric.brock@ondas.com, with the original sent by regular mail to the address shown below. If you have any questions, please contact me at (617) 359-6400.

Sincerely,

ONDAS NETWORKS INC.

/s/ Eric Brock

Eric Brock

Chief Executive Officer

Ondas Holdings

165 Gibraltar Court ■ Sunnyvale, CA 94089

+1-888-350-9994 ■ www.ondas.com

The undersigned hereby consents to the aforesaid waivers, extension and amendment.

STEWARD CAPITAL HOLDINGS, LP

Ondas Holdings

165 Gibraltar Court ■ Sunnyvale, CA 94089

+1-888-350-9994 ■ www.ondas.com

Exhibit 10.5

FIRST AMENDMENT TO SECURED TERM PROMISSORY NOTES

FIRST AMENDMENT TO SECURED TERM PROMISSORY NOTES (this “ Amendment ”), dated as of June 18, 2019, is entered into by ONDAS NETWORKS INC., fka Full Spectrum Inc., a Delaware corporation (together with its subsidiaries hereinafter referred to as the “ Borrower ”), in favor of STEWARD CAPITAL HOLDINGS, LP, a Delaware limited partnership, and its successors and assigns (hereinafter referred to as “ Lender ”).

W I T N E S S E T H

WHEREAS the Borrower and the Lender have entered into that certain Loan and Security Agreement dated as of March 9, 2018 and that certain First Amendment to the Loan and Security Agreement, dated as of the date hereof (collectively, the “ Loan Agreement ”);

WHEREAS, in connection with the Loan Agreement, the Borrower has executed in favor of Lender (i) that certain Secured Term Promissory Note, dated as of March 9, 2018, in the original principal amount of $5,000,000 and (ii) that certain Secured Term Promissory Note, dated as of October 9, 2018, in the original principal amount of $5,000,000 (collectively, the “ Notes ”);

WHEREAS the Borrower has requested that the Lender agree to extend the Maturity Date of each of the Notes upon the terms set forth herein; and

NOW, THEREFORE, in consideration of the agreements hereinafter set forth, and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

1.1   Amendment . Each Note is hereby amended so that the Maturity Date for each Note shall be September 9, 2020.

1.2   Effect of Amendment . Except as expressly set forth herein, this Amendment shall not by implication or otherwise limit, impair, constitute a waiver of, or otherwise affect, the rights and remedies of the parties to the Notes and shall not alter, modify, amend or in any way affect any of the terms or conditions contained therein, all of which are ratified and affirmed in all respects and shall continue in full force and effect. Nothing herein shall be deemed to entitle any Party to any future consent with respect to, or waiver, amendment, modification or other change of, any of the terms or conditions contained in the Notes in similar or different circumstances. Except as expressly stated herein, the Lender reserves all rights, privileges and remedies under the Notes. All references in the Loan Agreement and the other Loan Documents to the Notes shall be deemed to be references to the Notes as modified hereby.

1.3   Counterparts . This Amendment may be executed by the parties hereto in several counterparts, each of which shall be deemed to be an original and all of which shall constitute together but one and the same agreement. Delivery of an executed signature page of this Amendment by facsimile transmission or electronic transmission shall be as effective as delivery of a manually executed counterpart hereof.

[ Signature page follows ]

IN WITNESS WHEREOF, each of the parties hereto has caused this Amendment to be duly executed and delivered as of the date first above written.