X0202 4 2007-04-26 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 2007-04-26 4 S 0 9133 D 497367 I Trust Common Stock 1893000 D Average price $27.5188 per share The sale were made pursuant ro a 10b5-1 trading plan entered into by Mr. Murdock on March 12, 2007. Shares were disposed of in multiple transactions on April 26, 2007 as follows: SHARES @ PRICE 100 @ 27.71 333 @ 27.70 100 @ 27.69 1,600 @ 27.66 900 @ 27.65 100 @ 27.63 100 @ 27.62 400 @ 27.60 300 @ 27.59 100 @ 27.58 6 @ 27.57 600 @ 27.55 300 @ 27.54 100 @ 27.53 100 @ 27.52 100 @ 27.51 1,000 @ 27.50 100 @ 27.49 100 @ 27.47 200 @ 27.46 200 @ 27.45 200 @ 27.44 100 @ 27.43 100 @ 27.42 100 @ 27.41 406 @ 27.38 100 @ 27.35 100 @ 27.34 200 @ 27.32 100 @ 27.30 100 @ 27.28 100 @ 27.26 100 @ 27.21 288 @ 27.20 44 @ 27.12 256 @ 27.10 9,133 @ 27.5188 /s/ Thomas E. Murdock 2007-04-27