X0306 4 2016-12-09 0 0000892537 MANTECH INTERNATIONAL CORP MANT 0001341924 Bjornaas Judith L MANTECH INTERNATIONAL CORPORATION 12015 LEE JACKSON MEMORIAL HWY. FAIRFAX VA 22033 0 1 0 0 Executive Vice President & CFO Class A Common Stock 2016-12-09 4 M 0 7500 27.89 A 9500 D Class A Common Stock 2016-12-09 4 S 0 7500 45.35 D 2000 D Class A Common Stock 139 I By the ManTech Employee Stock Ownership Plan Employee Stock Option (right to buy) 27.89 2016-12-09 4 M 0 7500 0.00 D 2018-11-04 Class A Common Stock 7500 0 D The price in column 4 is a weighted average price. The prices actually received for the sale ranged from $45.32 to $45.39. For all weighted average prices reported in this Form 4, the reporting person will provide the issuer, any stockholder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The options were granted on November 4, 2013, with one-third of the total grant vesting on November 4, 2014, one-third of the total grant vesting on November 4, 2015, and the remaining one-third vesting on November 4, 2016. /s/Michael R. Putnam,by Power of Attorney 2016-12-13