Communication regarding withholding of final dividend for the FY 2025-26

Biocon Limited 20th KM, Hosur Road Electronic City Bangalore 560 100, India T 91 80 2808 2808 F 91 80 2852 3423 CIN : L24234KA1978PLC003417 E: co.secretary@biocon.com www.biocon.com BIO/SECL/TG/2026-27/82 November 04, 2026 To, To, The Manager The Manager 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: Communication regarding withholding of final dividend for the FY 2025-26 Dear Sir/Madam, Please find enclosed specimen of the letters sent by the Company on November 03, 2026, intimating withholding of final dividend for FY 2025-26 to (a) shareholders holding shares in physical form whose dividend has been withheld for non-updation of complete KYC details with the Registrar and Transfer Agent of the Company, i.e. KFin Technologies Limited and (b) shareholders holding shares in demat form whose dividend has been withheld for non-updation of complete bank details with their respective depository participants, and urging these shareholders to complete such details and claim their dividend. Details of shareholders having unpaid/unclaimed dividend can be accessed on the Company's website at https://www.biocon.com/investor-relations/share-information/unclaimed-and-unpaid-dividend/. The same will also be available on the website of the Company at www.biocon.com. Kindly take the above intimation on record. Thanking you, Yours faithfully, For Biocon Limited Rajesh U. Shanoy Company Secretary and Compliance officer ICSI Membership Number: A16328 Encl. as above Biocon Limited CIN: L24234KA1978PLC003417 Registered Office: 20th KM, Hosur Road, Electronic City, Bengaluru - 560 100, Karnataka, India Tel: 080-2808 2808, Website: www.biocon.com; E-mail ID: co.secretary@biocon.com Date: October 30th, 2026 Dear Shareholder Sub: Request to complete mandatory Know Your Customer (‘KYC’) in order to receive your dividend amount(s) for Financial Year 2025-26 in electronic mode directly into your bank account Ref: SEBI Master Circular No. HO/38/13/(4)2026-MIRSD-POD/I/4298/2026 dated February 06, 2026 (‘Master Circular’) We are pleased to inform you that final dividend of ₹ 0.50 per equity share (of face value ₹ 5/-) for the Financial Year 2025-26 has been approved by Members of the Company at the 48th Annual General Meeting held on Thursday, August 06, 2026. In terms of the captioned SEBI Master Circular, Members who hold shares in physical form and whose folios are not updated with any of their KYC details [viz., (i) PAN (ii) Contact details (iii) Bank account details and (iv) Specimen signature], shall be eligible to get dividend in electronic mode only upon updation of their aforesaid KYC details. Please note that, as per the details available with the Registrar and Transfer Agent (‘RTA’) of the Company, i.e. KFin Technologies Limited (‘KFintech’), your folio is not updated with the KYC details as mentioned below. We request you to furnish your details to KFintech by furnishing the required forms as mentioned in the table below: Sr. No. Mandatory KYC Availability as per Forms to be Weblink to download forms Requirements records of RTA submitted 1. PAN RTA website: 2. Address (with PIN) 3. Email address Form No. ISR-1 https://ris.kfintech.com/clientservices/isc/isrforms.aspx 4. Mobile Number Company's website: 5. Bank Account details (Bank & Bank name, Bank https://www.biocon.com/investor-relations/shareholder- Account Number, IFS Code) services/miscellaneous-communication/ 6. Specimen Signature Form No. ISR-2 In compliance with SEBI Listing Regulations, dividend for Financial Year 2025-26 of ₹ [.] shall be processed only upon updation of your aforesaid missing KYC details with KFintech. We request you to complete the a fore sa id mandatory KYC by sending a request along with duly signed Form ISR-1, Form ISR-2, as applicable, and other supporting documents to KFintech as detailed above: Modes for submission of Forms ISR -1 and ISR- 2 with supporting documents: Through 'In Person Physical / Hard Through Electronic Mode with e-sign Verification' (‘IPV’) Copy by post / courier The original documents can be submitted by By furnishing original forms In case the email address is already registered with RTA, the shareholder may the shareholder in person at RTA's office along with photocopy(ies) of the send the scanned copies of the aforesaid documents/service requests with e- which shall be verified by the authorised relevant supporting documents, sign (Digital signature certificate obtained through empanelled e-Sign Service person of the RTA and retaining copy(ies) duly self-attested with date at the Provider) through the aforesaid registered email address at the RTA's email-id: with IPV stamping with date and initials. RTA's office. einward.ris@kfintech.com. The documents may also be authenticated by the s ecurities holder using Aadhar based authentication or using Digilocker. Upload KYC documents with e-sign on RTA’s website at the link: https://ris.kfintech.com/ OR https://kprism.kfintech.com/. RTA’s Office: Attn: Mr. D. Suresh Babu KFin Technologies Limited Unit: Biocon Ltd Plot No. 31 & 32, Selenium Building, Tower B, Financial District, Nanakramguda, Gachibowli, Hyderabad, Telangana - 500 032. Toll Free No. 1800-309-4001; Email ID: einward.ris@kfintech.com Further, kindly note that as per the Central Board of Direct Taxes, it is mandatory to link PAN with Aadhaar number for resident investors. Shareholders who have not linked their PAN with Aadhaar number are requested to get the same linked. KFintech shall accept only valid PAN i.e. PAN which is linked to Aadhaar number for processing any service requests. Thanking you, For Biocon Limited Sd/- Rajesh U. Shanoy Company Secretary and Compliance Officer M.No.: ACS 16328 Unclaimed dividend, if any, for any previous financial year(s) can be claimed after updation of your complete bank details as aforesaid with your depository participant. The details of such unclaimed dividends are available on the Company's website at https://www.biocon.com/investor-relations/share-information/unclaimed-and-unpaid-dividend/ OTHER IMPORTANT INFORMATION: Choice of Nomination: 1. You are requested to update your choice of Nomination if not already updated, by furnishing Form No. SH-13 with the RTA via the modes of submission mentioned above. You may choose to opt-out of nomination by providing declaration in Form No. ISR-3. Request for dematerialisation: 2. You are requested to dematerialise your physical holding at the earliest as transfer/transmission/transposition of physical securities are not allowed in physical mode as per SEBI’s stipulation. 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