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Corporate Office: Registered Office: Star 1, Opp IIM Bangalore, Bilekahalli, Cyber One, Unit No. 902, Sector 30A, Bannergha(cid:425)a Road, Bengaluru – Plot No - 4 & 6, Vashi, 560076, India Navi Mumbai - 400703, India T: +91 80 6784 0738 T: +91 22 2789 2924 Date: July 24, 2026 BSE Limited National Stock Exchange of India Ltd Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G, Dalal Street Bandra Kurla Complex, Mumbai- 400001 Bandra (E), Mumbai – 400 051 Scrip Code: 544292 Symbol: ONESOURCE Dear Sir/ Madam, Sub: Allotment of Equity Shares under the OneSource Specialty Pharma Limited – Employee Stock Option Plan 2021 (“ONESOURCE ESOP 2021”) Pursuant to the provisions of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended, we hereby inform you that the Management Committee of the Board of Directors, at its meeting held today, i.e. July 24, 2026, has approved, the allotment of 2,900 Equity Shares of INR. 1/- each, under ONESOURCE ESOP 2021, to the eligible employees of the Company, upon exercise of vested options. These shares shall rank pari passu with the existing equity shares of the Company, in all respects. Consequent to the above allotment, the paid-up share capital of the Company has increased from INR. 11,46,69,991/- (constituting of 11,46,69,991 equity shares of INR. 1/- each). to INR. 11,46,72,891/- (constituting of 11,46,72,891 equity shares of INR. 1/- each). Details under Regulation 10(c) of SEBI (Share Based Employee Benefits and Sweat Equity) Regulations, 2021, is attached herewith. You are requested to kindly take the same on record. For and on behalf of OneSource Specialty Pharma Limited Trisha A Company Secretary and Compliance Officer Membership Number: A47635 OneSource Specialty Pharma Limited info@onesourcecdmo.com | www.onesourcecdmo.com CIN: L74140MH2007PLC432497 Corporate Office: Registered Office: Star 1, Opp IIM Bangalore, Bilekahalli, Cyber One, Unit No. 902, Sector 30A, Bannergha(cid:425)a Road, Bengaluru – Plot No - 4 & 6, Vashi, 560076, India Navi Mumbai - 400703, India T: +91 80 6784 0738 T: +91 22 2789 2924 Details under Regulation 10(c) of SEBI (Share Based Employee Benefits and Sweat Equity) Regulations, 2021: Sr. Particulars 1. Company name and address of Registered OneSource Specialty Pharma Limited Office: Registered Office: Unit No. 902, "Cyber One", Plot No - 4 & 6, Sector 30A, Vashi, Navi Mumbai 400703. 2. Name of the recognized Stock Exchanges on BSE Limited and National Stock Exchange of India which the company's shares are listed: Limited 3. Filing date of the statement referred to in March 12, 2025 Regulation 10(b) of the SEBI (Share Based Employee Benefits) Regulations, 2021 with Stock Exchange: 4. Filing Number, if any: - 5. Title of the Scheme pursuant to which shares are OneSource Specialty Pharma Limited – Employee issued, if any: Stock Option Plan 2021 6. Kind of security to be listed Equity Shares 7. Par value of the shares INR. 1/- 8. Date of issue of shares July 24, 2026 9. Number of shares issued 2,900 10. Share Certificate No., if applicable: NA 11. Distinctive number of the share, if applicable: 125759312 to 125762211 12. ISIN Number of the shares if issued in Demat: INE013P01021 13. Exercise price per share INR. 278.00 14. Premium per share INR. 277.00 15. Total Issued shares after this issue 11,46,72,891 16. Total Issued share capital after this issue: INR 11,46,72,891/- 17. Details of any lock-in on the shares: NA 18. Date of expiry of lock-in: NA 19. Whether shares identical in all respects to Yes, the shares rank pari passu with the existing existing shares if not, when will they become shares identical? 20. Details of listing fees, if payable: NA For OneSource Specialty Pharma Limited Trisha A Company Secretary and Compliance Officer Membership Number: A47635 OneSource Specialty Pharma Limited info@onesourcecdmo.com | www.onesourcecdmo.com CIN: L74140MH2007PLC432497