Ardent Leisure's biggest shareholders have set the date for a vote on appointing new directors to the board, saying they have "significant concerns" about how the embattled theme parks operator has been run.
Investor Gary Weiss and property developer Kevin Seymour, who own 9.86 per cent of Ardent between them, have called a meeting of shareholders in Sydney on September 4 to ask for four new appointments to the Ardent board.
A letter distributed to Ardent shareholders on Thursday under the heading "Fix Ardent - proposed board appointments to drive value", asks for investors to remove any board appointments made ahead of the meeting and install Dr Weiss, Mr Seymour and two other nominees, Carl Bradford (Brad) Richmond and Andrew Hedges as directors.
"We have significant concerns in relation to the manner in which Ardent Leisure Group has performed, been managed and been governed," the letter says.
Mr Weiss and Mr Seymour said their nominations had records that "stand in contradistinction to the mediocre performance of the company and its board".
Ardent has previously criticised the push for new board members, saying it clashes with the company's strategy of expanding its US-based directors, and on Friday said it would consider its response.
Ardent chairman George Vernardos attacked the rival board move when it was flagged by Mr Weiss's Ariadne Australia on Wednesday.
"It is clear they want to override the board's existing search process and exert undue influence over the company's affairs," Mr Vernardos said at the time.
Four people died at Ardent's Dreamworld theme park on the Queensland Gold Coast in October, 2016, sparking a fall in the company's share price that has not been fully recovered.
Ardent shares were 1.5 cents higher at $2.135 at 1046 AEST.
