Copy of Newspaper Publication

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:+918067840738 T: +91 22 2789 2924 Date: October 28, 2026 BSE Limited National Stock Exchange of India Ltd Phiroze Jeejeebhoy Towers Exchange Plaza, c. l, Block G, Dalal Street Bandra Kurla Complex, Mumbai- 400001 Bandra (E) Scrip Code: 544292 Mumbai - 400 051 ISIN: INE013P01021 Symbol: ONESOURCE Dear Sir/Madam, Subject: Newspaper Advertisement: Unaudited Financial results for the quarter ended September 30, 2026 Pursuant to Regulation 47 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed herewith the copies of newspaper advertisement published on October 28, 2026 in the 'Financial Express’ and 'Lokmat', providing extract of the Unaudited Financial Results of the Company for the quarter ended September 30, 2026. This is for your information and records. For OneSource Specialty Pharma Limited A. TRISHA Digitally signed by A. TRISHA Date: 2026.10.28 13:31:40 +05'30' Trisha A Company Secretary and Compliance Officer Membership Number: A47635 OneSource Specialty Pharma Limited info@onesourcecdmo.com | www.onesourcecdmo.com CIN: L74140MH2007PLC432497