Lockheed Martin's Q1 net sales were $18.02 billion, compared to an estimated $18.24 billion.

First quarter earnings per share were $6.44, compared to $7.28 in the same period last year. Lockheed Martin still expects full-year earnings per share of $29.35 to $30.25, while the market estimates $29.82. Lockheed Martin still expects full-year net sales of $77.5 billion to $80 billion, with the market estimate at $79.09 billion. Lockheed Martin shares fell more than 5% in pre-market trading.