Change in Senior Management Personnel

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 August 13, 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: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 - Change in Senior Managerial Personnel Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), we would like to inform that Mr. Deepak Sapra, has resigned from the position of CEO, API and Services and Senior Management Personnel of the Company. He will cease to be in employment and as part of the Senior Management Personnel of the Company, effective from the close of business hours on November 12, 2026. The resignation letter as received from Mr. Deepak Sapra is annexed herewith. The details required under Regulation 30 of the SEBI Listing Regulations, read with SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026, is given in Annexure enclosed herewith. This is for your information and records. Thanking you, Yours faithfully, For Dr. Reddy’s Laboratories Limited K Randhir Singh Company Secretary, Compliance Officer and Head-CSR Encl: as above Annexure Details under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 Sl. No. Particulars Details 1 Reason for change viz. appointment, re- Mr. Deepak Sapra has resigned from the appointment, resignation, removal, death position of CEO, API and Services and Senior or otherwise; Management Personnel of the Company to pursue opportunities outside the Company. 2 Date of appointment/re-appointment/cessation November 12, 2026 (as applicable) & term of appointment/re-appointment 3 Brief profile (in case of appointment) Not applicable 4 Disclosure of relationships between directors (in Not applicable case of appointment of a director)