Limited Review report of the Statutory Auditors on the Unaudited Financial results for the quarter and half year ended September 30, 2026 with UDIN

Dr. Reddy's Laboratories Ltd. 8-2-337, Road No. 3, Banjara Hills Hyderabad – 500 034, Telangana, India CIN: L85195TG1984PLC004507 Tel: + 91 40 4900 2900 Fax: + 91 40 4900 2999 Email: mail@drreddys.com Web: www.drreddys.com October 23, 2026 National Stock Exchange of India Ltd. (Scrip Code: DRREDDY) BSE Limited. (Scrip Code: 500124) New York Stock Exchange Inc. (Stock Code: RDY) NSE IFSC Ltd. (Stock Code: DRREDDY) Dear Sir/Madam, Sub: Limited Review Reports of the Statutory Auditors on the Unaudited Financial Results for the quarter and half year ended September 30, 2026 with Unique Document Identification Number (“UDIN”) With reference to our earlier intimation on unaudited financial statements for the quarter and half-year ended September 30, 2026, filed with the stock exchanges today i.e. October 23, 2026, please find enclosed the Limited Review Reports of the Statutory Auditors thereon bearing the UDIN for your records. This is for your information and records. Thanking you. Yours faithfully, For Dr. Reddy’s Laboratories Limited K Randhir Singh Company Secretary, Compliance Officer & Head-CSR Encl: as above