0000950135-98-001905 Sample Contracts

1 EXHIBIT 4.1 RIGHTS AGREEMENT DATED AS OF MARCH 12, 1998

Rights Agreement • March 27th, 1998 • Aspen Technology Inc /Ma/ • Services-computer programming services • Delaware

• Contract Type
  Rights Agreement
• Filed
  March 27th, 1998
• Company
  Aspen Technology Inc /Ma/
• Industry
  Services-computer programming services
• Jurisdiction
  Delaware