Orbital ATK announced preliminary unaudited financial results for the fourth quarter and full year ended Dec. 31, 2016. The company reported Generally Accepted Accounting Principles (GAAP) revenues of $1,272 million for the fourth quarter of 2016, up 11 percent compared to $1,145 million in the fourth quarter of 2015. GAAP income from continuing operations, before interest, income taxes and non-controlling interest (which the company refers to as operating income) was $114.9 million, or 9 percent operating margin, for the fourth quarter of 2016 compared to $94.3 million or 8.2 percent operating margin, in the comparable 2015 period.

Orbital ATK reported GAAP earnings per diluted share of $1.08 and $0.89 in the fourth quarters of 2016 and 2015, respectively. Free cash flow, which is a non-GAAP measure defined as GAAP cash from operating activities ($414.7 million) minus capital expenditures ($84.5 million), was $330.2 million in the fourth quarter of 2016 compared to $122.2 million in the fourth quarter of 2015.