The New York-based company will restate financial statements for the 2010, 2011, 2012 financial years and the first quarter of 2013.
"Still a fine company, in my view, at a justifiable share price."
Chief executive Alex Sodi says Europe has grown to 18% of sales from 14% and will become lynchpin for future growth.
The proposal will be put to shareholders on June 4 at the annual meeting.
The high-flying listed company asks for a trading halt while it considers a report from a major accounting firm.
UPDATED: The FMA confirms it is working with the company to establish if a breach of securities law has occurred over share options being issued to employees without a prospectus.
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