UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16

Under the Securities Exchange Act of 1934

For the Month of September 2026

Commission File Number: 001-37353

SCINAI IMMUNOTHERAPEUTICS LTD.

(Translation of registrant’s name into English)

Jerusalem BioPark, 2nd Floor

Hadassah Ein Kerem Campus

Jerusalem, Israel

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒     Form 40-F ☐

Explanatory Note

On September 21, 2026, Scinai Immunotherapeutics Ltd. issued a press release titled “Scinai Regains Compliance with Nasdaq Minimum Bid Price Requirement.”

A copy of the press release is furnished herewith as Exhibit 99.1.

This Report on Form 6-K (other than the third paragraph thereof) is hereby incorporated by reference into the registrant’s Registration Statements on Form S-8 (File Nos. 333-291460, 333-271293 and 333-239344) and Form F-3 (File Nos. 333-295698 and 333-276767), to be a part thereof from the date on which this report is submitted, to the extent not superseded by documents or reports subsequently filed or furnished..

Exhibit Index

SIGNATURES

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.

ATTACHMENTS / EXHIBITS

PRESS RELEASE DATED SEPTEMBER 21, 2026