Denny's Corporation reported preliminary results for domestic same-store sales and restaurant openings and closings for its fourth quarter and full year ended December 30, 2015. Denny's fourth quarter domestic system-wide same-store sales grew 2.9%, comprised of a 2.8% increase at domestic franchised restaurants and 3.5% growth at company restaurants. On a two-year basis, this represents 9.3% growth at company restaurants and 7.4% growth at domestic franchised restaurants.

For the full year, the company reported domestic same-store sales increased 2.8%.

Based on preliminary results, the company is tightening its full year 2015 guidance expectations for Adjusted EBITDA and Free Cash Flow to be at the high end of the guidance ranges provided with the Company's Third Quarter 2015 results announced on November 3, 2015.