X0202 4 2007-04-30 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 2007-04-30 4 S 0 10000 D 472538 I Trust Common Stock 1893000 D Average price $26.5619 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 300 @ 27.06 100 @ 27.02 100 @ 27.01 300 @ 26.98 100 @ 26.96 400 @ 26.95 100 @ 26.94 300 @ 26.90 200 @ 26.89 100 @ 26.88 694 @ 26.87 300 @ 26.86 400 @ 26.85 100 @ 26.81 1,000 @ 26.79 100 @ 26.51 100 @ 26.50 400 @ 26.49 188 @ 26.48 100 @ 26.43 600 @ 26.40 300 @ 26.38 349 @ 26.37 100 @ 26.32 751 @ 26.28 100 @ 26.26 302 @ 26.21 200 @ 26.20 394 @ 26.19 700 @ 26.18 822 @ 26.17 10,000 @ 26.5619 /s/ Thomas E. Murdock 2007-05-01