X0202 4 2006-03-14 0 0001290096 Eagle Test Systems, Inc. EGLT 0001235816 TA ASSOCIATES SDF LLC C/O TA ASSOCIATES, INC. 125 HIGH STREET BOSTON MA 02110 0 0 1 0 Common Stock 2006-03-14 4 X 0 514750 0.01 A 514750 I See Footnote 1 12% Convertible Notes due 2009 0.01 2006-03-14 4 X 0 514750 0.00 D 2006-03-14 2013-09-13 Common Stock 514750 0 I See Footnote 1 The reporting person may be deemed to have an indirect pecuniary interest as the General Partner of TA Subordinated Debt Fund L.P. The reporting person disclaims beneficial ownership of such shares because the reporting person's indirect pecuniary interest is subject to indeterminable future events. The 12% Convertible Notes due 2009 were converted into (i) 12% Notes due 2009 and (ii) the number of warrants shown in column 5 which were immediately exercised for the number of shares of Common Stock shown in column 7. TA Associates SDF LLC By: TA Associates, Inc., its Manager By: Thomas P. Alber, Chief Financial Officer /s/ Thomas P. Alber 2006-03-16