Declaration by beneficial owner of significant shareholding requires identity, holding nature, and quantified indirect or direct rights. Form BEN-1 requires a person holding or acquiring significant beneficial ownership to declare the company, purpose of filing (initial or change), and the beneficial owner's identifier; provide personal particulars; and disclose the nature and extent of indirect holdings or rights through a member, including member type, registration number, address, and percentages attributable to shares, voting rights, dividends or exercise of control or significant influence (with agreements attached). It also requires the beneficiary's status in the member and disclosure of any direct holdings, with signature and attachments.