6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER PURSUANT TO RULE13a -16 OR

15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May 2026

Commission File Number: 001-15002

ICICI Bank Limited

(Translation of registrant’s name into English)

ICICI Bank Towers,

Bandra-Kurla Complex

Mumbai, India 400 051

(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.

Table of Contents

Items:

1: Other news

OTHER NEWS

Subject:Disclosure under Indian Listing Regulations

IBN

ICICI Bank Limited(the ‘Bank’) Report on Form 6-K

The Bank has made the below announcement to the Indian stock exchanges:

SEBI has, vide its letter dated May 4, 2026 (received on May 4 at 4:07 p.m.), issued an administrative warning to the Bank alleging certain non-compliances in relation to its activities as a depository participant being carried out under the SEBI (Depositories and Participants) Regulations, 2018. These observations were identified during the periodic inspection carried out by SEBI jointly with the depositories.

The Bank is in the process of taking necessary corrective action. There is no material impact on the financial, operations or other activities of the Bank. Please take the above information on record.

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 authorised.