Company: NCEL
Filing Date: 2025-07-29
Form Type: F-4/A
Source: 0001213900-25-068765
Chunk: 862

Company: NewcelX Ltd.
Filing Date: 2025-07-29
Form: F-4/A
Chunk 862
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ication of such issue. (11) The undersigned registrant hereby undertakes: (i) to respond to requests for information that is incorporated by reference into the prospectus pursuant to Items4, 10(b), 11 or 13 of this Form, within one business day of receipt of such request, and to send the incorporated documents by first class mail or other equally prompt means; and (ii) to arrange or provide for a facility in the U.S. for the purpose of responding to such requests. The undertaking in subparagraph (i) above includes information contained in documents filed subsequent to the effective date of the registration statement through the date of responding to the request. (12) The undersigned registrant hereby undertakes to supply by means of a post -effectiveamendment all information concerning a transaction, and the company being acquired involved therein, that was not the subject of and included in the registration statement when it became effective. II-6

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Zurich, Switzerland, on July 29, 2025.

| NLS Pharmaceutics Ltd. |     |                              |
| By:                    |     | /s/ Alexander Zwyer          |
|                        |     | Alexander Zwyer              |
|                        |     | Chief Executive Officer      |
|                        |     | -Principal Executive Officer |

Pursuant to the requirements of the Securities Act, this registration statement on Form F -4has been signed by the following persons in the capacities and on the dates indicated.

| Signature                     
 /s/ Alexander Zwyer           |     | Title                                       
 Chief Executive Officer and Director        |     | Date          
 July 29, 2025 |
|:------------------------------|:----|:--------------------------------------------|:----|:--------------|
| Alexander Zwyer               |     | -Principal Executive Officer                |     |               |
| *                             |     | Chief Financial Officer                     |     | July 29, 2025 |
| Nicole Fernandez-McGovern     |     | -Principal Financial and Accounting Officer |     |               |
| *                             |     | Chairman of the Board of Directors          |     | July 29, 2025 |
| Ronald Hafner                 |     |                                             |     |               |
| *                             |     | Director                                    |     | July 29,