SAST USHA MARTIN LTD. - 517146 - Disclosures under Reg. 29(2) of SEBI (SAST) Regulations, 2011 BSE India The Exchange has received the disclosure under Regulation 29(2) of SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011 for Peterhouse Investments Ltd and other promoter as PAC