UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13a -16 OR

15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of November 2025

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:

OTHER NEWS

Subject: Disclosure under Indian Listing Regulations

IBN

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

The Bank, in its disclosure filed with the stock exchanges on July 19, 2025, had informed about the proposed acquisition of 100% shareholding in ICICI Prudential Pension Funds Management Company Limited (ICICI PFM) from ICICI Prudential Life Insurance Company Limited (ICICI Life) to make ICICI PFM a wholly owned subsidiary of the Bank, subject to RBI, PFRDA and other necessary approvals.

Reserve Bank of India has, vide its letter dated November 27, 2025 received by the Bank yesterday at 6:10 p.m. accorded its approval to the Bank for the above, subject to certain conditions which include clearance from Pension Fund Regulatory and Development Authority.

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.