X0306 4 2017-03-21 0001544229 Engility Holdings, Inc. EGL 0001453368 Dugle Lynn A C/O ENGILITY HOLDINGS, INC. 4803 STONECROFT BOULEVARD CHANTILLY VA 20151 1 1 Chief Executive Officer Common Stock 2017-03-21 4 M 0 13633 A 28027 D Common Stock 2017-03-21 4 F 0 4726 28.64 D 23301 D Restricted Stock Units 2017-03-21 4 M 0 13633 0 D Common Stock 13633 40902 D Reflects the annual grant of RSUs that vest over three years from the date of grant - 25% on the first anniversary, 25% on the second anniversary, and 50% on the third anniversary. Vested RSUs are settled in shares of common stock of the Issuer or cash, which determination will be made at the sole discretion of the Issuer's Compensation Committee (or a subcommittee thereof). Includes the purchase of 738 shares of stock under the Engility Employee Stock Purchase Plan. Reflects shares withheld to cover the payment of taxes upon the vesting of restricted stock units. /s/ Jon Brooks as Attorney-in-Fact 2017-03-22