Certificate under SEBI (Depositories and Participants) Regulations, 2018

Biocon Limited 20th KM, Hosur Road Electronic City Bangalore 560 100, India T 91 80 2808 2808 F 91 80 2852 3423 CIN : L24234KA1978PLC003417 www.biocon.com BIO/SECL/TG/2026-27/40 July 13, 2026 To, To, The Secretary The Secretary BSE Limited National Stock Exchange of India Limited Department of Corporate Services Corporate Communication Department Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra Kurla Complex, Dalal Street, Mumbai – 400 001 Mumbai – 400 050 Scrip Code - 532523 Scrip Symbol - Biocon Dear Sir/Madam, Subject: Certificate under Regulation 74(5) of the Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended June 30, 2026 This is to certify that the details of securities dematerialized during the quarter ended June 30, 2026, as required under Regulation 74(5) of the Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018, have been furnished to all the Stock Exchanges where the shares of Biocon Limited are listed. The certificate received from KFin Technologies Limited, the Registrar and Share Transfer Agent of the Company, dated July 04, 2026, confirming the above, is enclosed for your reference. Kindly take the same on record. Thanking You, For Biocon Limited Rajesh Umakant Shanoy Company Secretary and Compliance Officer Membership No.: ACS 16328 Enclosed: Certificate under Regulation 74(5) KFIN 2026-27/74(5) Q1/Certificate Date: 04.07.2026 THE COMPANY SECRETARY BIOCON LIMITED 20TH K M HOUSUR ROAD ELECTRONIC CITY PO BANGALORE BANGALORE 560100 Subject: Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 (‘Regulations’) in respect of Equity Shares of the Company Dear Sirs/Madam, With reference to the above captioned Regulations, we hereby confirm that during the period 1st April, 2026 to 30th June, 2026 we have within 15 days from date of receipt of the certificates from the depository participants for dematerialization; • confirmed (approved/rejected) demat requests; • confirmed to the depositories that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed; • immediately mutilated and cancelled the said security certificates after due verification and • Name of the depositories have been substituted in register of members as the registered owner, in case of demat requests which are approved. Further, we have been certifying the same to the depositories and Stock Exchanges in accordance with Regulations. We request you to kindly take note of the above. Thanking you Yours faithfully, For KFIN TECHNOLOGIES LIMITED D Suresh Babu Sr. Manager