** Shares of burger chain Shake Shack SHAK.N down as much as 30.4% to more than a two-year low of $67.21
** Stock on track for a record low, if losses hold
** Co swings to a quarterly loss of 1 cent per share, compared with a profit of 11 cents per share a year ago.
** Also misses Q1 adjusted profit and revenue estimates - data compiled by LSEG
** Appoints Michelle Hook as new CFO, effective May 11, to succeed Katherine Fogertey, who stepped down from the role in early-March
** As of last close, stock up 18.9% YTD
(Reporting by Neil J Kanatt in Bengaluru)
((Neil.JKanatt@thomsonreuters.com;))