Onesource Specialty Pharma Limited has informed the Exchange about Disclosure under Regulation 29(2) of the SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011 and Regulation 7(2) of SEBI (Prohibition of Insider Trading) Regulations, 2015.Promoter group entities have purchased additional 443,906 equity shares of OneSource Specialty Pharma Limited, between January 30, 2026 and February 04, 2026.