Premier Investments has instructed its lawyers to immediately request a copy of the Myer shareholder register ahead of calling an Extraordinary General Meeting.
The move follows days of public conflict between the department store and its largest shareholder - which has vehemently called for the remaining three non-executive directors of the Myer board to resign.
"In Premier’s view, Myer’s three remaining non-executive directors should for once put its shareholders first and resign immediately," Premier said in a statement.
"Any other action would be futile, and costly for Myer shareholders who have endured enough."
Premier has commenced consultation with other Myer shareholders regarding the quick reconstitution of a majority independent Myer Board with the necessary skills and experience.
As part of this process, Premier has also retained a leading proxy solicitation firm.