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Shake Shack‘s shares fell nearly 5% in after-hours trading on Thursday after the company reported same-store sales that were less than Wall Street estimates.

So called same-shack-sales for the quarter fell by 1.8%, missing the Bloomberg consensus forecasts of 0.0% growth. The fast-casual burger chain said its full-year comparable sales of -2% to -3%, versus its prior forecast of flat.

Shake Shack reiterated its full-year…