Completion of tenure of Statutory Auditors

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/2026-27/53 August 06, 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 – 400 051 Scrip Code - 532523 Scrip Symbol – BIOCON Subject: Change in Directors and Statutory Auditors at the 48th Annual General Meeting of the Company Dear Sir/Madam, Pursuant to the provisions of Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’), we wish to inform you that the following changes have taken place in the Directors and Statutory Auditors at the 48th Annual General Meeting (‘AGM’) of the Company, held on Thursday, August 06, 2026, through video conferencing / other audio-visual means: 1. Re-appointment of Mr. Eric Vivek Mazumdar (DIN: 09381549) as Director liable to retire by rotation; 2. Retiring of Statutory Auditors, B S R & Co. LLP, Chartered Accountants, having Firm Registration No. 101248W/W100022, whose term expired at the conclusion of the 48th AGM; 3. Appointment of S.R. Batliboi & Associates LLP, Chartered Accountants, having Firm Registration No. 101049W/E300004, as the Statutory Auditors of the Company for a term of 5 (five) consecutive years to hold office from the conclusion of the 48th AGM till the conclusion of the 53rd AGM of the Company to be held in the year 2031; 4. Retiring of Mr. Nicholas Robert Haggar (DIN: 08518863) as an Independent Director upon completion of his term. In accordance with the Circular dated June 20, 2018, issued by the Stock Exchanges, it is confirmed that Mr. Eric Vivek Mazumdar is not debarred from holding the office of Director by virtue of any order of Securities and Exchange Board of India (‘SEBI’) or any other such authority. Further, 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, are enclosed herewith as ‘Annexure This intimation will also be available on website of the Company at www.biocon.com. Request you to kindly take this intimation on record and acknowledge. Thanking you, Yours faithfully, For Biocon Limited Rajesh U. Shanoy Company Secretary and Compliance officer ICSI Membership Number: A16328 Enclosed: As above ANNEXURE A Details as required under the 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: S. Particulars Details 1. Name Eric Vivek S.R. Batliboi & B S R & Co. LLP, Nicholas Robert Mazumdar Associates LLP, Chartered Haggar (DIN: 09381549) Chartered Accountants (DIN: 08518863) Accountants 2. Reason for change viz. Re-appointment Appointment as Completion of term Cessation appointment, re- (Upon the Statutory as Statutory (Completion of appointment, retirement by Auditors Auditors term as an resignation, removal, rotation) Independent death or otherwise Director) 3. Date of August 6, 2026. August 06, 2026. With effect from With effect from appointment/re- Liable to retire For a term of 5 the conclusion of conclusion of the appointment/cessatio by rotation (five) consecutive the 48th AGM held 48th AGM held on n (as applicable) & years from the on August 06, 2026. August 06, 2026 term of appointment/ conclusion of the re-appointment 48th AGM till the conclusion of the 53rd AGM to be held in the year 2031. 4. Brief profile Enclosed as Annexure A1 Not Applicable (in case of appointment) 5. Disclosure of Mr. Eric Vivek Not Applicable Not Applicable Not Applicable relationships between Mazumdar is directors (in case of son of Prof. Ravi appointment of a Mazumdar; director) nephew of Ms. Kiran Mazumdar- Shaw and brother-in-law of Mr. Thomas Jason Roberts ANNEXURE A1 BRIEF PROFILE- ERIC VIVEK MAZUMDAR Eric Vivek Mazumdar is an Assistant Professor of Computing & Mathematical Sciences and Economics at the California Institute of Technology. Eric is a distinguished academic whose research interests lie at the intersection of AI, machine learning, and economics. His work develops the foundations for the responsible use of AI in society and the sciences. Being an avid learner, he has worked on many research projects from reputable institutions such as the University of California, Berkeley, MIT Computer Science and Artificial Intelligence Laboratory and the MIT Koch Institute for Cancer Research. As a Ph.D. scholar from UCLA, Berkeley, he has developed tools and understanding, necessary for deploying Machine learning algorithms into societal-scale systems. He has also focused on studying the fundamental limits of learning algorithms in societal systems, and designing machine learning algorithms in real-world deployment, with applications in intelligent infrastructure, the delivery of healthcare, and e-commerce. He was awarded Simons Institute Research Fellowship to pursue research at the intersection of machine learning and economics. BRIEF PROFILE- S.R. BATLIBOI & ASSOCIATES LLP, CHARTERED ACCOUNTANTS S.R. Batliboi & Associates LLP (“the Firm”), a limited liability partnership firm incorporated in India, in 1949 with its registered office in Kolkata and has offices across key cities in India. The firm is registered with the Institute of Chartered Accountants of India (“ICAI”) with (ICAI Firm Registration No. 101049W/E300004). The S. R. Batliboi & Affiliates network of firms includes – S. R. Batliboi & Co LLP, S. R. Batliboi & Associates LLP, S R B C & CO LLP, S. V. Ghatalia & Associates LLP. All the network firms including the Firm are primarily engaged in providing audit and assurance services to its clients. They along with their network firms audit several large listed and private companies across diverse market segments including Industrial, Infrastructure, Consumer Products, Financial Services, Technology, Media and Entertainment, Telecommunications and Professional services.