Kindly refer the attachment.

25th September 2026 The Secretary, The Secretary, BSE Limited The National Stock Exchange of India Limited, Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G, Dalal Street, Bandra Kurla Complex, Mumbai – 400 001 Bandra (E), Mumbai – 400 051 Scrip Code: 500674 Symbol: SANOFI Sub: Closure of Trading Window Dear Sir/Madam, Pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015 and Company’s Code of Conduct to Regulate, Monitor and Report Insider Trading by Designated Persons, we would like to inform you that, inter-alia, for the purpose of declaration of Unaudited Financial Results of the Company for the quarter and nine months ending 30th September 2026, the trading window of the Company shall remain closed from 1st October 2026 till 48 hours after the announcement of the Results to the stock exchanges. Kindly take the above information on record. Thanking you, Yours faithfully, For Sanofi India Limited Haresh Vala Company Secretary and Compliance Officer Membership No.: A18246 Sanofi India Limited, Sanofi House, CTS No. 117-B, L&T Business Park, Saki Vihar Road, Powai, Mumbai 400 072 - India - Tel.: +91(22) 2803 2000 - Fax: +91(22) 2803 2939 Corporate Identity Number : L24239MH1956PLC009794 Website: www.sanofiindialtd.com | www.sanofi.in Email: igrc.sil@sanofi.com