ASPEN TECHNOLOGY INC /DE/


TEN CANAL PARK, CAMBRIDGE MA 02141, 6179491000
COMPUTER PROGRAMMING SERVICES

1999 SEC Filings

ASPEN TECHNOLOGY INC /DE/, DEFA14A, 1999-11-24
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-11-18
ASPEN TECHNOLOGY INC /DE/, 10-Q, 1999-11-15
ASPEN TECHNOLOGY INC /DE/, DEF 14A, 1999-11-09
ASPEN TECHNOLOGY INC /DE/, PRE 14A, 1999-10-28
ASPEN TECHNOLOGY INC /DE/, 10-K405/A, 1999-10-04
ASPEN TECHNOLOGY INC /DE/, 10-K405, 1999-09-28
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-08-31
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-07-22
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-06-28
ASPEN TECHNOLOGY INC /DE/, POS AM, 1999-06-17
ASPEN TECHNOLOGY INC /DE/, S-8, 1999-06-08
ASPEN TECHNOLOGY INC /DE/, S-3, 1999-06-08
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-06-07
ASPEN TECHNOLOGY INC /DE/, 10-Q, 1999-05-13
ASPEN TECHNOLOGY INC /DE/, 8-K, 1999-05-10
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-04-22
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-03-29
ASPEN TECHNOLOGY INC /DE/, 10-Q, 1999-02-16
ASPEN TECHNOLOGY INC /DE/, POS AM, 1999-02-04
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-02-04
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-01-25
ASPEN TECHNOLOGY INC /DE/, SC 13G, 1999-01-22
ASPEN TECHNOLOGY INC /DE/, 424B3, 1999-01-06


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