X0202 4 2007-04-27 0 0000026537 ARGON ST, Inc. STST 0001305064 Murdock Thomas E 12701 FAIR LAKES CIRCLE FAIRFAX VA 22033 1 1 1 0 Vice President Common Stock 2007-04-27 4 S 0 14829 D 482538 I Trust Common Stock 1893000 D Average price $27.3205 per share The sales were made pursuant to a 10b5-1 trading plan entered into by Mr. Murdock on March 12, 2007. The shares were disposed of in multiple transactions on April 27, 2007 as follows: SHARES @ PRICE 100 @ 27.46 400 @ 27.45 800 @ 27.43 2,600 @ 27.41 2,200 @ 27.40 700 @ 27.38 1,000 @ 27.37 914 @ 27.36 500 @ 27.35 1,400 @ 27.34 600 @ 27.33 600 @ 27.30 100 @ 27.26 286 @ 27.25 129 @ 27.24 200 @ 27.19 200 @ 27.14 300 @ 27.12 100 @ 27.07 200 @ 27.04 900 @ 27.02 100 @ 26.99 202 @ 26.98 98 @ 26.97 100 @ 26.94 100 @ 26.93 14,829 @ 27.3205 /s/ Thomas E. Murdock 2007-05-01