X0306 4 2018-09-01 0 0001487101 KEYW HOLDING CORP KEYW 0001706630 Luci Philip 7740 MILESTONE PARKWAY, SUITE 400 HANOVER MD 21076 0 1 0 0 General Counsel/Secretary Common stock, par value $0.001 2018-09-01 4 F 0 2287 8.51 D 66182 D Represents shares withheld by The KeyW Holding Corporation ("Company") to satisfy tax withholding obligations in connection with the vesting of 7,600 shares of restricted stock. The fair market value of the shares withheld to pay taxes was determined based on the closing price on August 31, 2018. No shares were sold by the Company or the reporting person. Includes 1,000 shares acquired under The KeyW Holding Corporation Employee Stock Purchase Plan on June 29, 2018. /s/ Sarah E. Roberts as Attorney-in-Fact for Philip Luci 2018-09-04