Certificate under SEBI (Depositories and Participants) Regulations, 2018

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 July 3, 2026 National Stock Exchange of India Ltd. (Scrip Code: DRREDDY-EQ) BSE Limited (Scrip Code: 500124) Dear Sirs, Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 Pursuant to Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018, please find enclosed herewith a Confirmation Certificate received from the Registrar and Share Transfer Agent i.e. M/s. Bigshare Services Private Limited for the quarter ended June 30, 2026. This is for your information. Thanking you, Yours faithfully, For Dr. Reddy’s Laboratories Limited K Randhir Singh Company Secretary, Compliance Officer & Head-CSR Services Date: 03,07,2026 DR. REDDY'S LABORATORIES LTD 8-2-337,ROAD NO 3 BANJARA HILLS HYDERABAD PrN 500034 Dear Sir/IVladam, Sub : Certificate ulder Regulation 74(5) of the SEBI @epositories and participants) Regulations, 20rg for the quarter ended June 30ih 2026. Ref : NSDLlClRIIASlz0lg dated 25th Januaw.20t9 cDsl/ops/RTAlpoLtcy tzlrgf ia dadd25rh Janua ry, 2019. SEBI vide its letter ref no. MRD/DoPztDsglowtzltgt24gg/l dated zhtoltzolg with reference to the captioned regulation, we hereby confirm that the securities received from the Depository Participants for dematerialisation during the quarter ended June 30th 2026. were confirmed laccepted/rejectea) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchange where the earlier issued securities are listed. we hereby conlirm that the security certificates received for dematerialisation have been mutilated & cancelled after due verification by the depository participant and the name of the Depositories have been substituted in registei or memU.r, u, registered ownerwithin 15 days. we request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For Bigshare Services pvt Ltd (Authorised Signatory) 306' Right wng Amrutha ville, opp. Yashoda Hospltal, somaJiguda, Raf Bhavan Road, Hyderabad- 500082Te1:9t'40'2337 4967,23370295 Fax: 91^-40-23370295 E.mail: bsshyd@blgshaieonlne.com