Company: NCEL
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0001213900-25-104162
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Company: NewcelX Ltd.
Filing Date: 2025-10-30
Form: 6-K
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NewcelX Ltd.” and the business conducted by the Company has been combined with
that of Kadimastem, creating an integrated biopharmaceutical company focused on the development of cell-based and small-molecule therapies
for neurodegenerative and metabolic diseases.

The foregoing description of the Merger and the Merger Agreement is not complete and is subject to and qualified in its entirety by reference to the Merger Agreement, a copy of which is attached as Exhibit 99.1 to the Report of Foreign Private Issuer on Form 6-K furnished to the Securities and Exchange Commission on November 5, 2025, and which is incorporated herein by reference.

Press Release

On October 30, 2025, the Company
issued a press release titled: “NLS Pharmaceutics Ltd. and Kadimastem Ltd. Announce Completion of Merger” A copy of this press
release is furnished herewith as Exhibit 99.1.

<div align='center'>EXHIBIT INDEX</div>

| Exhibit 
 Number  |     | Description of Document                                                                    |
| 99.1    |     | Press                                                                                      
 release titled: “NLS Pharmaceutics Ltd. and Kadimastem Ltd. Announce Completion of Merger” |

<div align='center'>1

SIGNATURES</div>

Pursuant to the requirements
of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto
duly authorized.

| Date: October 30, 2025 | NLS Pharmaceutics Ltd. 
 By:                    | /s/ Alexander C. Zwyer |                         |
|:-----------------------|:-----------------------|:-----------------------|:------------------------|
|                        |                        | Name:                  | Alexander C. Zwyer      |
|                        |                        | Title:                 | Chief Executive Officer |

<div align='center'>2</div>