ASPEN TECHNOLOGY INC /DE/

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

1998 SEC Filings

ASPEN TECHNOLOGY INC /DE/, S-3/A, 1998-12-23
ASPEN TECHNOLOGY INC /DE/, 424B3, 1998-12-14
ASPEN TECHNOLOGY INC /DE/, S-3, 1998-12-11
ASPEN TECHNOLOGY INC /DE/, S-3/A, 1998-12-08
ASPEN TECHNOLOGY INC /DE/, 10-Q/A, 1998-11-20
ASPEN TECHNOLOGY INC /DE/, DEFR14A, 1998-11-18
ASPEN TECHNOLOGY INC /DE/, 10-Q, 1998-11-16
ASPEN TECHNOLOGY INC /DE/, DEF 14A, 1998-10-28
ASPEN TECHNOLOGY INC /DE/, 424B3, 1998-10-19
ASPEN TECHNOLOGY INC /DE/, S-3/A, 1998-10-09
ASPEN TECHNOLOGY INC /DE/, 8-K, 1998-10-07
ASPEN TECHNOLOGY INC /DE/, 8-K, 1998-10-06
ASPEN TECHNOLOGY INC /DE/, 10-K, 1998-09-28
ASPEN TECHNOLOGY INC /DE/, 8-K/A, 1998-09-17
ASPEN TECHNOLOGY INC /DE/, S-3, 1998-09-16
ASPEN TECHNOLOGY INC /DE/, S-3, 1998-09-15
ASPEN TECHNOLOGY INC /DE/, 424B3, 1998-09-03
ASPEN TECHNOLOGY INC /DE/, S-3, 1998-08-10
ASPEN TECHNOLOGY INC /DE/, 8-K, 1998-07-28
ASPEN TECHNOLOGY INC /DE/, 424B3, 1998-06-30
ASPEN TECHNOLOGY INC /DE/, S-3, 1998-06-19
ASPEN TECHNOLOGY INC /DE/, 8-K, 1998-06-19
ASPEN TECHNOLOGY INC /DE/, 10-Q/A, 1998-06-17
ASPEN TECHNOLOGY INC /DE/, 10-Q/A, 1998-06-12
ASPEN TECHNOLOGY INC /DE/, 8-K/A, 1998-06-12
ASPEN TECHNOLOGY INC /DE/, 8-A12G/A, 1998-06-12
ASPEN TECHNOLOGY INC /DE/, 8-K, 1998-06-03
ASPEN TECHNOLOGY INC /MA/, 10-Q, 1998-05-15
ASPEN TECHNOLOGY INC /MA/, 8-K, 1998-05-06
ASPEN TECHNOLOGY INC /MA/, 8-K, 1998-03-27
ASPEN TECHNOLOGY INC /MA/, SC 13G/A, 1998-03-05
ASPEN TECHNOLOGY INC /MA/, POS AM, 1998-02-17
ASPEN TECHNOLOGY INC /MA/, 10-Q, 1998-02-13
ASPEN TECHNOLOGY INC /MA/, POS AM, 1998-01-30
ASPEN TECHNOLOGY INC /MA/, S-8, 1998-01-20


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