X0306 4 2015-02-17 0 0001056239 L 3 COMMUNICATIONS HOLDINGS INC LLL 0001388957 Brunson Curtis C/O L-3 COMMUNICATIONS CORPORATION 600 THIRD AVENUE NEW YORK NY 10016 0 1 0 0 See Remarks Common Stock 2015-02-17 4 A 0 7126 0.00 A 76118 D Common Stock 2015-02-17 4 A 0 8304 0.00 A 84422 D Common Stock 2015-02-17 4 F 0 4636 129.31 D 79786 D 02/17/15 Employee Stock Option (Right to Buy) 129.31 2015-02-17 4 A 0 39667 0.00 A 2025-02-17 Common Stock 39667 39667 D Represents the deemed acquisition of restricted stock units upon the satisfaction of relevant performance criteria. These restricted stock units were granted on February 19, 2014 and vest on the three-year anniversary of the grant date, provided certain performance criteria have been met for the fiscal year ended December 31, 2014. Reflects additional shares acquired through the Company's Employee Stock Purchase Plan and Master Savings (401(k)) Plan. Does not include shares issuable upon the exercise of options. Represents shares acquired through the vesting of performance units settled in common stock. The performance units were granted on February 22, 2012. Represents the number of common shares surrendered to pay applicable tax withholding on the shares acquired through the vesting of the performance units. This option vests annually in equal one-third increments beginning on the one-year anniversary of the grant date. Executive Vice President, Corporate Strategy and Development /s/ Allen E. Danzig as Attorney-in-Fact 2015-02-19