0000905148-06-004417 Sample Contracts

EXHIBIT 99.4 ------------

Item 1115 Agreement • June 14th, 2006 • IndyMac INDX Mortgage Loan Trust 2006-Ar13 • Asset-backed securities • New York

• Contract Type
  Item 1115 Agreement
• Filed
  June 14th, 2006
• Company
  IndyMac INDX Mortgage Loan Trust 2006-Ar13
• Industry
  Asset-backed securities
• Jurisdiction
  New York

EXHIBIT 99.3

Rate Cap Transaction • June 14th, 2006 • IndyMac INDX Mortgage Loan Trust 2006-Ar13 • Asset-backed securities • New York

• Contract Type
  Rate Cap Transaction
• Filed
  June 14th, 2006
• Company
  IndyMac INDX Mortgage Loan Trust 2006-Ar13
• Industry
  Asset-backed securities
• Jurisdiction
  New York