6-K

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

WASHINGTON,D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-16

UNDERTHE SECURITIES EXCHANGE ACT OF 1934

Forthe month of September 2025

CommissionFile Number: 001-42796

NasusPharma Ltd.

YigalAlon 65

TelAviv, Israel 6744317

(Address of principal executive office)

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

Form 20-F ☒ Form 40-F ☐

CONTENTS

On September 3, 2025, the Board of Directors (the “Board”) of Nasus Pharma Ltd. (the “Company”) appointed Dan Teleman, the Company’s Chief Executive Officer, to serve as a director on its Board. Mr. Teleman was appointed to the Board as permitted under the Company’s Amended and Restated Articles of Association due to a vacancy on the Board. Mr. Teleman will serve as a Class III director, which term will expire at the annual general meeting of shareholders to be held in 2028.

In addition to Mr. Teleman’s appointment, the Board resolved to replace David Silberman with Ronnie Hershman as a member of the Compensation Committee of the Board.

SIGNATURE

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.