Analysts/Institutional Investor Meet/Con. Call Updates

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: August 31, 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 under Regulation 30 of SEBI (LODR) Regulations, 2015 regarding Schedule of Analyst / Institutional Group Investor Meeting Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that the representatives of OneSource Specialty Pharma Limited (the “Company”), will interact with the Group of Analysts/ Investors (Participants) as per details provided below: Day & Date Interaction Type Location Thursday, Group Investor Meeting OneSource Unit 2 (Manufacturing Facility) September 03, 2026 (Physical) Address: Division Plot# 2-D 1, Obadenahalli, Doddaballapura, 3rd Phase Industrial Area, Doddaballapura Taluk Bengaluru Rural District - 561203, India During these interactions, the Company’s representatives will discuss publicly available information including the business overview, strategy, industry trends and growth outlook as part of the regular investor engagement activities. Please note that no unpublished price sensitive information (UPSI) is proposed to be shared. 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