Investor Presentation

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: September 03, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G, Dalal Street, Mumbai- 400001 Bandra Kurla Complex, Bandra (E), Mumbai – 400 051 Scrip Code: 544292 Symbol: ONESOURCE Dear Sir/ Madam, Subject: Intimation of Investor Presentation – September 03, 2026 We refer to the intimation dated August 31, 2026 regarding Analyst/ Institutional Group Investor meeting scheduled to be held today, September 03, 2026 at the Manufacturing Facility (Unit II), located at Division Plot# 2-D 1, Obadenahalli, Doddaballapura, 3rd Phase Industrial Area, Bengaluru - 561203, India. We have uploaded the latest Investor Presentation at Company’s website at: https://www.onesourcecdmo.com/investor- relations/stock-exchange-intimation/ 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