Grant of Employee Stock Options

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 Email: co.secretary@biocon.com BIO/SECL/EA/2026-27/70 October 01, 2026 To To BSE Limited National Stock Exchange of India Limited Department of Corporate Services Corporate Communication Department Phiroze Jeejeebhoy Towers, Dalal Street Exchange Plaza, Bandra Kurla Complex Mumbai – 400 001 Mumbai – 400 051 Scrip Code - 532523 Scrip Symbol - BIOCON Dear Sir/Madam, Subject: Grant of Employee Stock Options under Biocon Unity Long Term Incentive Plan 2026 read with the Notified Plans thereunder Ref: Regulation 30 of SEBI Listing Regulations, 2015 This is to inform that pursuant to the applicable provisions of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations, 2015”), and based on the approval of the Nomination and Remuneration Committee, Board of Directors and the Shareholders at the 46th Annual General Meeting of the Company, the Company has granted stock options to eligible employees under the Biocon Unity Long Term Incentive Plan 2026 read with the Biocon Limited Performance Stock Unit Plan 2026, Biocon Limited Restricted Stock Unit Plan 2026 and Biocon Limited Management Stock Unit Plan 2026 (also named as Biocon Unity “Growth Accelerator” Plan 2026) (“Plans/Schemes”). Details required under Regulation 30 of the SEBI Listing Regulations, 2015 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 A’. The above-mentioned information will also be made available on the website of the Company www.biocon.com. Kindly take the same on record. Thanking you, For Biocon Limited Rajesh U. Shanoy Company Secretary and Compliance officer ICSI Membership Number: A16328 Encl. as above ANNEXURE A Details as required under the Regulation 30 of the SEBI Listing Regulations, 2015 read with SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026: Sl. No. Particulars Details 1 Brief details of options granted 94,60,232 stock options granted to eligible employees (as defined in the Plans/Schemes). Effective date of grant is October 01, 2026. 2 Whether the Scheme is in terms of SEBI (SBEB) Yes, the Plans/Schemes are in compliance with SEBI Regulations, 2021 (if applicable) (Share Based Employee Benefits and Sweat Equity) Regulations, 2021 as amended from time to time. 3 Total number of shares covered by these 94,60,232 equity shares of face value of Rs. 5/- each of options the Company. Each stock option carries the right to apply for and be allotted 1 (one) equity share of face value of Rs. 5/- of the Company. 4 Pricing formula Exercise price is Rs. 5/- per stock option 5 Options vested No options have vested as on date. The options will vest in accordance with the vesting schedule set out in the Grant letter. 6 Time within which option may be exercised 12 months from the date of respective vesting or as otherwise mentioned in the Plans/Schemes 7 Options exercised Not Applicable The options shall vest in accordance with terms of their vesting schedule prior to exercise. 8 Money realized by exercise of options Not Applicable 9 The total number of shares arising as a result Not Applicable of exercise of option 10 Options lapsed Not Applicable 11 Variation of terms of options Not Applicable 12 Brief details of significant terms The Plans/Schemes are administered by the Nomination and Remuneration Committee of the Board. The Plan/Schemes shall be implemented through the trust route wherein Biocon India Limited Employees Welfare Trust shall acquire the equity shares by direct allotment from the Company or through Secondary Acquisition as contemplated under the Plans/Schemes to extend benefits to the eligible employees of the Sl. No. Particulars Details Company, its Subsidiary Company or Associate Company. The granted options, once vested in accordance with the vesting conditions, as applicable, shall entitle the option holder to acquire equal number of equity shares, upon payment of exercise price and applicable taxes in accordance with terms and conditions of the Plans/Schemes. No Exercise Price is payable at the time of grant of options. The Exercise Price will be payable only at the time of Exercise. The options vested may be exercised in full or in tranches, at a time or at different points in time within the prescribed Exercise Period. Equity shares arising on the exercise of the options shall rank pari passu with all the other equity Shares of the Company for the time being in issue. 13 Subsequent changes or cancellation or Not Applicable exercise of such options 14 Diluted earnings per share pursuant to issue of Not Applicable equity shares on exercise of options