Hindalco Industries Ltd. — M&A Activity 2026

May 20, 2026

ADITYA BIRLA HINDALCO

May 20, 2026

BSE Limited
Scrip Code: 500440
National Stock Exchange of India Limited
Scrip Code: HINDALCO
Luxembourg Stock Exchange
Scrip Code: US4330641022

Sub: Fourth Update: Acquisition of AluChem Companies, Inc. by Aditya Holdings LLC, a step-down wholly owned subsidiary of Hindalco Industries Limited.

Ref:
a. Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015;
b. SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 ["SEBI Circular"];
c. ISIN: INE038A01020 and
d. Our Intimations dated June 24, 2025, October 23, 2025, February 11, 2026 and February 26, 2026.

We wish to refer to our earlier intimations regarding the filing of a 'short-form' and subsequently, a 'long-form' declaration with the Committee on Foreign Investment in the United States ["CFIUS"] in connection with the proposed acquisition of AluChem Companies, Inc.

In this regard, please be informed that due to partial shutdown of the U.S. federal government, the statutory timelines under the CFIUS review framework were tolled, thereby impacting the ongoing CFIUS review process.

Given the aforesaid impact, additional extension has been afforded taking the review completion timeline to July 2, 2026. Necessary documentation has been filed in this regard.

We will provide further updates as and when material developments occur or upon completion of the review process.

All other details, as per our referred intimations, remain unchanged. You are requested to kindly take the aforesaid information on record.

This is also made available on the website of the Company www.hindalco.com

The above is for your information and dissemination.

Sincerely,

for Hindalco Industries Limited

Geetika Anand
Digitally signed by Geetika Anand
Date: 2026.05.20
21:49:16 +05'00'

Geetika Anand
Company Secretary & Compliance Officer

Hindalco Industries Limited
Registered Office: 21st Floor, One Unity Center, Senapati Bapat Marg, Prabhadevi, Mumbai - 400013, India | T: +91 22 69477000 / 69477150 | F: +91 2269477001/69477090
W: www.hindalco.com | E: hilinvestors@adityabirla.com | Corporate ID No.: L27020MH1958PLC011238