Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 Sample Contracts

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (December 29th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (November 30th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (October 27th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (September 29th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (August 27th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (July 30th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (July 2nd, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (June 4th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (May 4th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (April 5th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (March 24th, 2004)

Class Cusip Orig Prin Bal Begin Prin Bal Int Rate Accrued Int Rate Paid Int Dist Prin Dist Int Shortfall Prin Loss Deferred Interest Int Reimbursed Unscheduled Int Prin Reimbursed Total Dist Ending Class Bal

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (March 3rd, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (February 4th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (January 7th, 2004)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (December 4th, 2003)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (November 4th, 2003)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (September 8th, 2003)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (August 11th, 2003)

EXHIBIT 99 WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. MASTER SERVICING MORTGAGE PASS-THROUGH CERTIFICATES 07/2003 DISTRIBUTION REPORT SERIES: amac 2003-4 WEIGHTED AVERAGE PC RATE: 5.50829% POOL NUMBER: Group 1 = 2069 ____________________________________________________________________________________________ ISSUE DATE: 03/31/2003 CERTIFICATE BALANCE AT ISSUE: $396,056,656.24 CERTIFICATE TOTAL ACCOUNT CERTIFICATE NUMBER OF ACTIVITY BALANCE MORTGAGES (@PC RATE) OUTSTANDING

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (July 9th, 2003)

EXHIBIT 99 WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. MASTER SERVICING MORTGAGE PASS-THROUGH CERTIFICATES 06/2003 DISTRIBUTION REPORT SERIES: amac 2003-4 WEIGHTED AVERAGE PC RATE: 5.50918% POOL NUMBER: Group 1 = 2069 ____________________________________________________________________________________________ ISSUE DATE: 03/31/2003 CERTIFICATE BALANCE AT ISSUE: $396,056,656.24 CERTIFICATE TOTAL ACCOUNT CERTIFICATE NUMBER OF ACTIVITY BALANCE MORTGAGES (@PC RATE) OUTSTANDING

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (June 10th, 2003)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (June 10th, 2003)
Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (May 12th, 2003)

EXHIBIT 99 WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. MASTER SERVICING MORTGAGE PASS-THROUGH CERTIFICATES 04/2003 DISTRIBUTION REPORT SERIES: amac 2003-4 WEIGHTED AVERAGE PC RATE: 5.51299% POOL NUMBER: Group 1 = 2069 ____________________________________________________________________________________________ ISSUE DATE: 03/31/2003 CERTIFICATE BALANCE AT ISSUE: $396,056,656.24 CERTIFICATE TOTAL ACCOUNT CERTIFICATE NUMBER OF ACTIVITY BALANCE MORTGAGES (@PC RATE) OUTSTANDING

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WHOLE LOAN PURCHASE AGREEMENT (April 9th, 2003)

WHOLE LOAN PURCHASE AGREEMENT Whole Loan Purchase Agreement (the "Agreement"), dated as of March 1, 2003 between ABN AMRO Mortgage Group, Inc. (the "Seller") and Washington Mutual Mortgage Securities Corp. (the "Purchaser"). Subject to the terms and conditions of this Agreement, the Seller agrees to sell and the Purchaser agrees to purchase certain mortgage loans (the "Mortgage Loans") as described herein and as identified on the Mortgage Loan Schedule defined in Section 2 hereof. The Mortgage Loans will be purchased on a servicing released basis. Now, therefore, in consideration of the premises and the mutual agreements set forth herein, the parties agree as follows: SECTION 1. Purchase and Sale of the Mortgage Loans. (a) Pursuant to the terms hereof and upon satisfaction of the conditions set forth herein, the Seller agrees to sell and the Purchaser agrees to purchase, Mortgage Loans having the characteristics

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – UNDERWRITING AGREEMENT (April 9th, 2003)

ABN AMRO MORTGAGE CORPORATION MULTI-CLASS MORTGAGE PASS-THROUGH CERTIFICATES UNDERWRITING AGREEMENT ---------------------- January 23, 2003 Credit Suisse First Boston LLC Eleven Madison Avenue New York, New York 10010 ABN AMRO Financial Services, Inc. 208 South LaSalle Street, Suite 200 Chicago, Illinois 60604 Ladies and Gentlemen: ABN AMRO Mortgage Corporation (the "Company"), a Delaware corporation, has authorized the issuance and sale of Mortgage Pass-Through Certificates (the "Certificates") evidencing interests in pools of mortgage loans (the "Mortgage Loans"). The Certificates may be issued in various series, and, within each series, in one or more classes, and, within each class, in one or more sub-classes, in one or more offerings on terms determined at the time of sale (each such series, a "Series" and each

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. (April 9th, 2003)

EXECUTION COPY ------------------------------------------------------------------------------- ABN AMRO MORTGAGE CORPORATION Depositor and WASHINGTON MUTUAL MORTGAGE SECURITIES CORP. Seller and Servicer and U.S. BANK NATIONAL ASSOCIATION Trustee and Custodian POOLING AND SERVICING AGREEMENT Dated as of March 1, 2003 $396,056,656 Mortgage Pass-Through Certificates SERIES 2003-4 -------------------------------------------------------------------------------- T

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – TERMS AGREEMENT (April 9th, 2003)

EXECUTION PASS-THROUGH CERTIFICATES ABN AMRO MORTGAGE CORPORATION, DEPOSITOR TERMS AGREEMENT Dated: March 25, 2003 To: ABN AMRO Mortgage Corporation Re: Underwriting Agreement, dated as of January 23, 2003 (the "Underwriting Agreement") Ladies and Gentlemen: The undersigned (being herein called the "Underwriters"), understand that ABN AMRO Mortgage Corporation, a Delaware corporation (the "Company"), proposes to issue and sell approximately $394,076,373 original principal amount of Multi-Class Mortgage Pass-Through Certificates described below (the "Certificates"). The Certificates will be issued under a Pooling and Servicing Agreement dated as of March 1, 2003 among the Company, as depositor, Washington Mutual Mortgage Securities Corp., as

Abn Amro Mort Corp Multi Class Mort Pass Thr Cert Ser 2003-4 – SECTION 1. PURCHASE AND SALE OF THE MORTGAGE LOANS. (April 9th, 2003)

Mortgage Loan Purchase Agreement -------------------------------- Mortgage Loan Purchase Agreement (the "AGREEMENT"), dated as of March 27, 2003 between Washington Mutual Mortgage Securities Corp. (the "SELLER") and ABN AMRO Mortgage Corporation (the "PURCHASER"). Subject to the terms and conditions of this Agreement, the Seller agrees to sell and the Purchaser agrees to purchase certain mortgage loans (the "MORTGAGE LOANS") as described herein and as identified on the Mortgage Loan Schedule defined in SECTION 2 hereof. The Mortgage Loans will be purchased on a servicing retained basis. Now, therefore, in consideration of the premises and the mutual agreements set forth herein, the parties agree as follows: SECTION 1. PURCHASE AND SALE OF THE MORTGAGE LOANS. (a) Pursuant to the terms hereof and upon satisfaction of the conditions set forth herein, the Seller agrees