Company: NCEL
Filing Date: 2025-11-06
Form Type: POS AM
Source: 0001213900-25-106799
Chunk: 89

Company: NewcelX Ltd.
Filing Date: 2025-11-06
Form: POS AM
Chunk 89
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 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 post -effectiveamendment no. 1 to registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Zurich, Switzerland, on November 5, 2025.

| NewcelX Ltd. |     |                              |
| By:          |     | /s/ Ronen Twito              |
|              |     | Ronen Twito                  |
|              |     | Executive Chairman and       
 Chief Executive Officer      |
|              |     | -Principal Executive Officer |

POWER OF ATTORNEY The undersigned officers and directors of NewcelX Ltd. hereby constitute and appoint Ronen Twito with full power of substitution, as our true and lawful attorney -in-factand agent to take any actions to enable the Company to comply with the Securities Act, and any rules, regulations and requirements of the SEC, in connection with this registration statement on Form F -4, including the power and authority to sign for us in our names in the capacities indicated below any and all further amendments to this registration statement and any other registration statement filed pursuant to the provisions of Rule 462 under the Securities Act. 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/ Ronen Twito        |     | Title                                          
 Executive Chairman and Chief Executive Officer |     | Date             
 November 5, 2025 |
|:-----------------------|:----|:-----------------------------------------------|:----|:-----------------|
| Ronen Twito            |     | -Principal Executive Officer                   |     |                  |
| /s/ Uri Ben Or         |     | Chief Financial Officer                        |     | November 5, 2025 |
| Uri Ben Or             |     | -Principal Financial and Accounting Officer    |     |                  |
| /s/ Michel Revel       |     | Director                                       |     | November 5, 2025 |
| Michel Revel           |     |                                                |     |                  |
| /s/ Olivier Samuel     |     | Independent Director                           |     | November 5, 2025 |
| Olivier Samuel