Premier Investments, owned by Solomon Lew, has requested the register of Myer shareholders with plans to contact investors ahead of the AGM.
The announcement jumped Myer's share prices significantly yesterday.
Premier Investments' request follows comments by Lew earlier this week, in which the retail tycoon accused the department store giant of misleading its investors.
Lew's jabs at the company were also off the back of Premier Investments' strong FY17 results that saw the company record an increase in EBIT of $136.0 million, growing by 7.3%.
The company also stated its two key brands, Peter Alexander and Smiggle, would both implement significant expansion strategies over the coming years.