X0306 4 2018-10-01 0 0001487101 KEYW HOLDING CORP KEYW 0001464648 Weber William John THE KEYW HOLDING CORPORATION 7740 MILESTONE PARKWAY, SUITE 400 HANOVER MD 21076 1 1 0 0 President/CEO Common stock, par value $0.001 2018-10-01 4 F 0 7525 8.84 D 109496 D Represents shares withheld by The KeyW Holding Corporation ("Company") to satisfy tax withholding obligations in connection with the vesting of 25,000 shares of restricted stock. The fair market value of the shares withheld to pay taxes was determined based on the closing price on October 1, 2018. No shares were sold by the Company or the reporting person. /s/ Sarah E. Roberts as Attorney-in-Fact for William John Weber 2018-10-01