X0202 4 2007-02-12 0 0000927355 TESSCO TECHNOLOGIES INC TESS 0001312548 Discovery Group I, LLC 191 N. WACKER DRIVE SUITE 1685 CHICAGO IL 60606 0 0 1 0 0001323511 Donoghue Daniel J C/O DISCOVERY GROUP I, LLC 191 N. WACKER DRIVE SUITE 1685 CHICAGO IL 60606 0 0 1 0 0001323510 Murphy Michael R C/O DISCOVERY GROUP I, LLC 191 N. WACKER DRIVE SUITE 1685 CHICAGO IL 60606 0 0 1 0 Common Stock 2007-02-12 4 S 0 17805 26.5416 D 680932 I Discovery Equity Partners, L.P. Common Stock 2007-02-12 4 S 0 3909 26.5416 D 677023 I Pleiades Investment Partners - D, L.P. Common Stock 2007-02-13 4 S 0 11635 27.957 D 665388 I Discovery Equity Partners, L.P. Common Stock 2007-02-13 4 S 0 2551 27.957 D 662837 I Pleiades Investment Partners - D, L.P. Discovery Group I, LLC is the General Partner of Discovery Equity Partners, L.P., which is a discretionary client of the reporting person, that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. Discovery Group I, LLC is an investment manager for Pleiades Investment Partners - D, L.P., which is a discretionary client of the reporting person, that owns the reported securities. The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. Michael R. Murphy, Managing Director 2007-02-14 Daniel J. Donoghue 2007-02-14 Michael R. Murphy 2007-02-14