Beneficial interest declaration requires registered owner to disclose beneficial owners, identity details and supporting instruments. Form MGT-4 requires a registered shareholder who is not the beneficial owner to declare the name and particulars of the beneficial owner(s), provide identity and share particulars, state the nature and date of creation of the beneficial interest and reasons for not registering in the beneficial owner's name, and attach the instrument(s) evidencing creation, transfer or change of the beneficial interest; subsequent changes in beneficial interest must also be disclosed, with signature, date, place and identity enclosures.