Significant beneficial ownership requires declaration, company filing, register maintenance, notice powers and potential share restrictions. These Rules require individuals holding significant beneficial ownership (not less than ten per cent. or exercising ultimate control) to file Form BEN-I with the company on commencement or within thirty days of acquisition/change; companies must file Form BEN-2 with the Registrar within thirty days, maintain a register in Form BEN-3 open for inspection, issue Form BEN-4 notices to obtain SBO information, and may apply to the Tribunal for restrictions on shares including transfer, dividend and voting suspensions. Pooled investment vehicles and regulated funds are excluded.