8-K 1 opt03004.txt SEPTEMBER 8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 Form 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 25, 2003 OPTION ONE MORTGAGE LOAN TRUST Asset-Backed Certificates, Series 2003-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-104020-01 54-2116942 Pooling and Servicing Agreement) (Commission 54-2116941 (State or other File Number) 54-2116943 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank Minnesota, N.A. 9062 Old Annapolis Road Columbia, Maryland 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) ITEM 5. Other Events On September 25, 2003 a distribution was made to holders of OPTION ONE MORTGAGE LOAN TRUST, Asset-Backed Certificates, Series 2003-4 Trust. ITEM 7. Financial Statements and Exhibits (c) Exhibits furnished in accordance with Item 601(a) of Regulation S-K Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset-Backed Certificates, Series 2003-4 Trust, relating to the September 25, 2003 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. OPTION ONE MORTGAGE LOAN TRUST Asset-Backed Certificates, Series 2003-4 Trust By: Wells Fargo Bank Minnesota, N.A. as Trustee By: /s/ Beth Belfield, Assistant Vice President By: Beth Belfield, Assistant Vice President Date: 10/6/03 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset- Backed Certificates, Series 2003-4 Trust, relating to the September 25, 2003 distribution. EX-99.1

Option One Mortgage Loan Trust Asset-Backed Certificates Record Date: 78/31/03 Distribution Date: 89/25/03 OOMC Series: 2003-4 Contact: Customer Service - CTSLink Wells Fargo Bank Minnesota, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution A-1 68389FDS0 SEN 1.~~42000~~43000% ~~797~~793,~~682~~584,~~887~~121.4414 ~~975~~977,~~388~~210.9167 46,~~098~~759,~~766~~043.3052 A-2 68389FDT8 SEN 1.~~42000~~43000% ~~280~~277,~~079~~925,~~718~~600.4495 342,~~475~~234.2650 2,~~154~~569,~~117~~626.4991 M-1 68389FDU5 MEZ 1.~~78000~~79000% 60,625,000.00 9293,~~924~~446.6570 0.00 M-2 68389FDV3 MEZ 2.~~75000~~76000% 43,750,000.00 103,~~602~~979.4317 0.00 M-3 68389FDX9 MEZ 4.67000% 12,500,000.00 48,645.83 0.00 M-4 68389FDY7 MEZ 4.~~10000~~11000% 12,500,000.00 44,~~131~~239.9458 0.00 M-5A 68389FDZ4 MEZ 4.~~85000~~86000% 8,500,000.00 35,~~499~~572.3150 0.00 M-5F 68389FEA8 MEZ 5.75000% 4,000,000.00 19,166.67 0.00 M-6 ~~68389FEC4~~68389FEB6 MEZ 4.~~85000~~86000% 12,500,000.00 52,~~204~~312.8650 0.00 C OPT03004C OC 0.00000% 14,375,000.00 5,~~134~~095,~~872~~059.48 0.00 P OPT03004P Pre_pay 0.00000% 100.00 57145,~~963~~952.8014 0.00 R-1 OPT0304R1 RES 0.00000% 0.00 0.00 0.00 R-2 OPT0304R2 RES 0.00000% 0.00 0.00 0.00 R-3 ~~OPT0304R3~~68389FEC4 RES 0.00000% 0.00 0.00 0.00 Totals 1,~~246~~240,~~512~~259,~~705~~822.8809 6,~~906~~957,~~876~~819.1474 69,~~252~~328,~~883~~670.7943

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 ~~793~~786,~~584~~825,~~121~~077.1462 57,~~074~~736,~~155~~254.2119 0.00 A-2 0.00 ~~277~~275,~~925~~355,~~600~~974.9504 2,~~496~~911,~~592~~861.7541 0.00 M-1 0.00 60,625,000.00 9293,~~924~~446.6570 0.00 M-2 0.00 43,750,000.00 103,~~602~~979.4317 0.00 M-3 0.00 12,500,000.00 48,645.83 0.00 M-4 0.00 12,500,000.00 44,~~131~~239.9458 0.00 M-5A 0.00 8,500,000.00 35,~~499~~572.3150 0.00 M-5F 0.00 4,000,000.00 19,166.67 0.00 M-6 0.00 12,500,000.00 52,~~204~~312.8650 0.00 C 0.00 14,375,000.00 5,~~134~~095,~~872~~059.48 0.00 P 0.00 100.00 57145,~~963~~952.8014 0.00 R-1 0.00 0.00 0.00 0.00 R-2 0.00 0.00 0.00 0.00 R-3 0.00 0.00 0.00 0.00 Totals 0.00 1,~~240~~230,~~259~~931,~~822~~151.0966 1316,~~159~~286,~~759~~490.9317 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) A-1 800,000,000.00 ~~797~~793,~~682~~584,~~887~~121.4414 0.00 46,~~098~~759,~~766~~043.3052 0.00 0.00 A-2 281,250,000.00 ~~280~~277,~~079~~925,~~718~~600.4495 0.00 2,~~154~~569,~~117~~626.4991 0.00 0.00 M-1 60,625,000.00 60,625,000.00 0.00 0.00 0.00 0.00 M-2 43,750,000.00 43,750,000.00 0.00 0.00 0.00 0.00 M-3 12,500,000.00 12,500,000.00 0.00 0.00 0.00 0.00 M-4 12,500,000.00 12,500,000.00 0.00 0.00 0.00 0.00 M-5A 8,500,000.00 8,500,000.00 0.00 0.00 0.00 0.00 M-5F 4,000,000.00 4,000,000.00 0.00 0.00 0.00 0.00 M-6 12,500,000.00 12,500,000.00 0.00 0.00 0.00 0.00 C 14,374,900.00 14,375,000.00 0.00 0.00 0.00 0.00 P 100.00 100.00 0.00 0.00 0.00 0.00 R-1 0.00 0.00 0.00 0.00 0.00 0.00 R-2 0.00 0.00 0.00 0.00 0.00 0.00 R-3 0.00 0.00 0.00 0.00 0.00 0.00 Totals 1,250,000,000.00 1,~~246~~240,~~512~~259,~~705~~822.8809 0.00 69,~~252~~328,~~883~~670.7943 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution A-1 46,~~098~~759,~~766~~043.3052 ~~793~~786,~~584~~825,~~121~~077.1462 0.~~99198015~~98353135 46,~~098~~759,~~766~~043.3052 A-2 2,~~154~~569,~~117~~626.4991 ~~277~~275,~~925~~355,~~600~~974.9504 0.~~98817991~~97904346 2,~~154~~569,~~117~~626.4991 M-1 0.00 60,625,000.00 1.00000000 0.00 M-2 0.00 43,750,000.00 1.00000000 0.00 M-3 0.00 12,500,000.00 1.00000000 0.00 M-4 0.00 12,500,000.00 1.00000000 0.00 M-5A 0.00 8,500,000.00 1.00000000 0.00 M-5F 0.00 4,000,000.00 1.00000000 0.00 M-6 0.00 12,500,000.00 1.00000000 0.00 C 0.00 14,375,000.00 1.00000696 0.00 P 0.00 100.00 1.00000000 0.00 R-1 0.00 0.00 0.00000000 0.00 R-2 0.00 0.00 0.00000000 0.00 R-3 0.00 0.00 0.00000000 0.00 Totals 69,~~252~~328,~~883~~670.7943 1,~~240~~230,~~259~~931,~~822~~151.0966 0.~~99220786~~98474492 69,~~252~~328,~~883~~670.7943

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 800,000,000.00 ~~997~~991.~~10360930~~98015142 0.00000000 58.~~12345787~~44880440 0.00000000 A-2 281,250,000.00 ~~995~~988.~~83899890~~17991449 0.00000000 79.~~65908441~~13645124 0.00000000 M-1 60,625,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-2 43,750,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-3 12,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-4 12,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-5A 8,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-5F 4,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-6 12,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 C 14,374,900.00 1000.00695657 0.00000000 0.00000000 0.00000000 P 100.00 1000.00000000 0.00000000 0.00000000 0.00000000 R-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 R-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 R-3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 (2) All Classes are per $1,000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution A-1 0.00000000 58.~~12345787~~44880440 ~~991~~983.~~98015142~~53134702 0.~~99198015~~98353135 58.~~12345787~~44880440 A-2 0.00000000 79.~~65908441~~13645124 ~~988~~979.~~17991449~~04346325 0.~~98817991~~97904346 79.~~65908441~~13645124 M-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-5A 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-5F 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-6 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 C 0.00000000 0.00000000 1,000.00695657 1.00000696 0.00000000 P 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 R-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (3) Amount Does Not Include Excess Special Hazard, Bankrupcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall A-1 800,000,000.00 1.~~42000~~43000% ~~797~~793,~~682~~584,~~887~~121.4414 ~~975~~977,~~388~~210.9167 0.00 0.00 A-2 281,250,000.00 1.~~42000~~43000% ~~280~~277,~~079~~925,~~718~~600.4495 342,~~475~~234.2650 0.00 0.00 M-1 60,625,000.00 1.~~78000~~79000% 60,625,000.00 9293,~~924~~446.6570 0.00 0.00 M-2 43,750,000.00 2.~~75000~~76000% 43,750,000.00 103,~~602~~979.4317 0.00 0.00 M-3 12,500,000.00 4.67000% 12,500,000.00 48,645.83 0.00 0.00 M-4 12,500,000.00 4.~~10000~~11000% 12,500,000.00 44,~~131~~239.9458 0.00 0.00 M-5A 8,500,000.00 4.~~85000~~86000% 8,500,000.00 35,~~499~~572.3150 0.00 0.00 M-5F 4,000,000.00 5.75000% 4,000,000.00 19,166.67 0.00 0.00 M-6 12,500,000.00 4.~~85000~~86000% 12,500,000.00 52,~~204~~312.8650 0.00 0.00 C 14,374,900.00 0.00000% 14,375,000.00 0.00 0.00 0.00 P 100.00 0.00000% 100.00 0.00 0.00 0.00 R-1 0.00 0.00000% 0.00 0.00 0.00 0.00 R-2 0.00 0.00000% 0.00 0.00 0.00 0.00 R-3 0.00 0.00000% 0.00 0.00 0.00 0.00 Totals 1,250,000,000.00 1,~~714~~716,~~039~~808.8612 0.00 0.00

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance A-1 0.00 0.00 ~~975~~977,~~388~~210.9167 0.00 ~~793~~786,~~584~~825,~~121~~077.1462 A-2 0.00 0.00 342,~~475~~234.2650 0.00 ~~277~~275,~~925~~355,~~600~~974.9504 M-1 0.00 0.00 9293,~~924~~446.6570 0.00 60,625,000.00 M-2 0.00 0.00 103,~~602~~979.4317 0.00 43,750,000.00 M-3 0.00 0.00 48,645.83 0.00 12,500,000.00 M-4 0.00 0.00 44,~~131~~239.9458 0.00 12,500,000.00 M-5A 0.00 0.00 35,~~499~~572.3150 0.00 8,500,000.00 M-5F 0.00 0.00 19,166.67 0.00 4,000,000.00 M-6 0.00 0.00 52,~~204~~312.8650 0.00 12,500,000.00 C 0.00 0.00 5,~~134~~095,~~872~~059.48 0.00 14,375,000.00 P 0.00 0.00 57145,~~963~~952.8014 0.00 100.00 R-1 0.00 0.00 0.00 0.00 0.00 R-2 0.00 0.00 0.00 0.00 0.00 R-3 0.00 0.00 0.00 0.00 0.00 Totals 0.00 0.00 6,~~906~~957,~~876~~819.1474 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankrupcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall A-1 800,000,000.00 1.~~42000~~43000% ~~997~~991.~~10360930~~98015142 1.~~21923614~~22151334 0.00000000 0.00000000 A-2 281,250,000.00 1.~~42000~~43000% ~~995~~988.~~83899890~~17991449 1.~~21768981~~21683378 0.00000000 0.00000000 M-1 60,625,000.00 1.~~78000~~79000% 1000.00000000 1.~~53277773~~54138887 0.00000000 0.00000000 M-2 43,750,000.00 2.~~75000~~76000% 1000.00000000 2.~~36805554~~37666674 0.00000000 0.00000000 M-3 12,500,000.00 4.67000% 1000.00000000 3.89166640 0.00000000 0.00000000 M-4 12,500,000.00 4.~~10000~~11000% 1000.00000000 3.~~53055520~~53916640 0.00000000 0.00000000 M-5A 8,500,000.00 4.~~85000~~86000% 1000.00000000 4.~~17638941~~18500000 0.00000000 0.00000000 M-5F 4,000,000.00 5.75000% 1000.00000000 4.79166750 0.00000000 0.00000000 M-6 12,500,000.00 4.~~85000~~86000% 1000.00000000 4.~~17638880~~18500000 0.00000000 0.00000000 C 14,374,900.00 0.00000% 1000.00695657 0.00000000 0.00000000 0.00000000 P 100.00 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 R-1 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 R-2 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 R-3 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 (5) All Classes are per $1,000 denomination.

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance A-1 0.00000000 0.00000000 1.~~21923614~~22151334 0.00000000 ~~991~~983.~~98015142~~53134702 A-2 0.00000000 0.00000000 1.~~21768981~~21683378 0.00000000 ~~988~~979.~~17991449~~04346325 M-1 0.00000000 0.00000000 1.~~53277773~~54138887 0.00000000 1000.00000000 M-2 0.00000000 0.00000000 2.~~36805554~~37666674 0.00000000 1000.00000000 M-3 0.00000000 0.00000000 3.89166640 0.00000000 1000.00000000 M-4 0.00000000 0.00000000 3.~~53055520~~53916640 0.00000000 1000.00000000 M-5A 0.00000000 0.00000000 4.~~17638941~~18500000 0.00000000 1000.00000000 M-5F 0.00000000 0.00000000 4.79166750 0.00000000 1000.00000000 M-6 0.00000000 0.00000000 4.~~17638880~~18500000 0.00000000 1000.00000000 C 0.00000000 0.00000000 ~~357~~354.~~21100529~~44138603 0.00000000 1000.00695657 P 0.00000000 0.00000000 ~~579638~~1459521.~~00000000~~40000000 0.00000000 1000.00000000 R-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (6) Amount Does Not Include Excess Special Hazard, Bankrupcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 1417,~~065~~099,~~548~~364.5034 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 57145,~~963~~952.8014 Total Deposits 1417,~~123~~245,~~512~~316.3048 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee ~~963~~958,~~752~~826.3731 Payment of Interest and Principal 1316,~~159~~286,~~759~~490.9317 Total Withdrawals (Pool Distribution Amount) 1417,~~123~~245,~~512~~316.3048 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee ~~311~~310,~~627~~064.9463 Radian PMI Policy Fee ~~649~~645,~~009~~661.2621 Wells Fargo 3,~~115~~100.1747 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee ~~963~~958,~~752~~826.3731

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 37 0 0 37 ~~327~~777,~~941~~835.9676 0.00 0.00 ~~327~~777,~~941~~835.9676 30 Days 2567 1 61 0 3269 311,~~836~~334,~~852~~101.0226 5453,~~000~~855.0035 ~~965~~69,~~052~~350.00 0.00 411,~~855~~457,~~904~~306.0261 60 Days 34 0 013 0 317 ~~353~~571,~~183~~500.8300 0.00 02,096,700.0069 0.00 ~~353~~2,~~183~~668,200.8369 90 Days 10 0 58 0 68 ~~314,719~~0.5500 0.00 ~~577~~930,~~180~~364.7154 0.00 ~~891~~930,~~900~~364.2654 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 2971 48 1122 0 44101 411,~~504~~905,~~755~~601.4026 ~~381~~831,~~941~~691.9611 13,~~542~~096,~~232~~415.7123 0.00 615,~~428~~833,~~930~~707.0760 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.~~038422~~090218% 0.000000% 0.000000% 0.~~038422~~090218% 0.~~026438~~063178% 0.000000% 0.000000% 0.~~026438~~063178% 30 Days 0.~~320184~~863513% 0.~~012807~~012888% 0.~~076844~~012888% 0.000000% 0.~~409836~~889290% 0.~~309314~~920591% 0.~~004353~~004374% 0.~~077799~~005633% 0.000000% 0.~~391467~~930598% 60 Days 0.~~038422~~051553% 0.000000% 0.~~000000~~167547% 0.000000% 0.~~038422~~219100% 0.~~028473~~046419% 0.000000% 0.~~000000~~170301% 0.000000% 0.~~028473~~216720% 90 Days 0.~~012807~~000000% 0.000000% 0.~~064037~~103106% 0.000000% 0.~~076844~~103106% 0.~~025372~~000000% 0.000000% 0.~~046530~~075567% 0.000000% 0.~~071902~~075567% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.~~371414~~915066% 0.~~051230~~103106% 0.~~140881~~283542% 0.000000% 01.~~563525~~301714% 0.~~363158~~967010% 0.~~030791~~067553% 0.~~124330~~251501% 0.000000% 01.~~518279~~286063%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~156~~304,~~123~~747.8575 Class A-2 168,750,000.00 13.50000000% 168,750,100.00 13.70914204% 22.369730% 0.000000% Class M-1 108,125,000.00 8.65000000% 108,125,100.00 8.78400874% 4.925133% 0.000000% Class M-2 64,375,000.00 5.15000000% 64,375,100.00 5.22978884% 3.554220% 0.000000% Class M-3 51,875,000.00 4.15000000% 51,875,100.00 4.21429744% 1.015491% 0.000000% Class M-4 39,375,000.00 3.15000000% 39,375,100.00 3.19880604% 1.015491% 0.000000% Class R-I 14,375,000.00 1.15000000% 14,375,100.00 1.16782324% 0.000000% 0.000000% Class R-II 14,375,000.00 1.15000000% 14,375,100.00 1.16782324% 0.000000% 0.000000% Class R-III 14,375,000.00 1.15000000% 14,375,100.00 1.16782324% 0.000000% 0.000000% Class C 100.00 0.00000800% 100.00 0.00000812% 1.167815% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description Mixed Fixed & Arm Weighted Average Gross Coupon 7.~~521133~~518451% Weighted Average Net Coupon 7.~~221133~~218452% Weighted Average Pass-Through Rate 6.~~593342~~590749% Weighted Average Maturity(Stepdown Calculation ) ~~351~~350 Beginning Scheduled Collateral Loan Count 7,~~837~~808 Number Of Loans Paid In Full 2949 Ending Scheduled Collateral Loan Count 7,~~808~~759 Beginning Scheduled Collateral Balance 1,~~246~~240,~~512~~259,~~705~~822.8809 Ending Scheduled Collateral Balance 1,~~240~~230,~~259~~931,~~822~~151.0966 Ending Actual Collateral Balance at 31-~~Jul~~Aug-2003 1,~~240~~231,~~437~~176,~~965~~375.2982 Monthly P &I Constant 8,~~841~~800,~~550~~168.9549 Special Servicing Fee 0.00 Prepayment Penalties 57145,~~963~~952.8014 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Ending Scheduled Balance for Premium Loans 1,~~240~~230,~~259~~931,~~822~~151.0966 Scheduled Principal 1,~~028~~029,~~894~~474.3921 Unscheduled Principal 58,~~223~~299,~~989~~196.4022

Trigger Event Not Triggered In Effect Since N/A Comments N/A Stepdown Date Do Not Step Down In Effect Since N/A Comments N/A Unscheduled Principal-Voluntary 58,~~223~~299,~~989~~196.4022 Other Income 90.3300 Unscheduled Principal-Involuntary 0.00

Miscellaneous Reporting General Excess Available Amt 5,~~134~~095,~~872~~059.4347 Extra Principal Distribution Amt 0.00 Overcollateralization Amt 14,375,000.00 Excess Overcollateralized Amt 0.00 Overcollateralization Deficit Amt 0.00 Overcollateralization Increase Amt 0.00 Overcollateralization Release Amt 0.00 Specified Overcollateralization Am 14,375,000.00

Group Level Collateral Statement Group Group 1 Group 1 Group 2 Collateral Description Fixed 15/30 & ARM Fixed 15/30 & ARM Fixed 15/30 & ARM Weighted Average Coupon Rate 7.~~312361~~307508 7.~~666510~~667461 7.~~293752~~276576 Weighted Average Net Rate 7.~~012361~~007508 7.~~366511~~367461 6.~~993751~~976576 Weighted Average Maturity ~~351~~350 ~~351~~350 ~~351~~350 Beginning Loan Count 2,~~185~~175 4,~~067~~057 ~~535~~532 Loans Paid In Full 1013 1025 3 Ending Loan Count 2,~~175~~162 4,~~057~~032 ~~532~~529 Beginning Scheduled Balance ~~313~~312,~~869~~258,~~308~~245.0463 ~~608~~606,~~665~~177,~~221~~517.3344 ~~103~~102,~~289~~674,~~311~~218.0705 Ending scheduled Balance ~~312~~310,~~258~~272,~~245~~530.6385 ~~606~~601,~~177~~404,~~517~~188.4470 102,~~674~~053,~~218~~975.0598 Record Date 0708/31/2003 0708/31/2003 0708/31/2003 Principal And Interest Constant 2,~~220~~210,~~903~~455.3703 4,~~340~~325,~~506~~164.1063 ~~728~~723,~~246~~297.7158 Scheduled Principal 308,~~298~~930.7239 451,~~890~~962.9262 100,~~441~~700.2233 Unscheduled Principal 1,~~302~~676,~~763~~784.6939 24,~~035~~321,~~812~~366.9712 ~~514~~519,~~651~~541.8074 Scheduled Interest 1,~~912~~901,~~604~~524.6564 3,~~888~~873,~~615~~202.1801 ~~627~~622,~~805~~597.4925 Servicing Fees 78,~~467~~064.1552 ~~152~~151,~~166~~544.0824 25,~~822~~668.4247 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee ~~784~~780.3242 1,~~521~~515.1249 ~~258~~256.1164 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee ~~204~~203,~~276~~381.7497 ~~284~~282,~~128~~717.1459 63,~~242~~174.1163 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 1,~~834~~823,~~137~~460.5012 3,~~736~~721,~~449~~657.1077 ~~601~~596,~~983~~928.0778 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.00 0.00 0.00 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 6.~~228362~~222917 6.~~803346~~804788 6.~~256014~~235227

Group Level Collateral Statement Group Group 2 Total Collateral Description Fixed 15/30 & ARM Mixed Fixed & Arm Weighted Average Coupon Rate 7.~~523522~~520172 7.~~521133~~518451 Weighted Average Net Rate 7.~~223252~~220172 7.~~221133~~218452 Weighted Average Maturity ~~351~~350 ~~351~~350 Beginning Loan Count 1,~~050~~044 7,~~837~~808 Loans Paid In Full 68 2949 Ending Loan Count 1,~~044~~036 7,~~808~~759 Beginning Scheduled Balance ~~220~~219,~~688~~149,~~865~~840.4497 1,~~246~~240,~~512~~259,~~705~~822.8809 Ending scheduled Balance ~~219~~217,~~149~~200,~~840~~456.9713 1,~~240~~230,~~259~~931,~~822~~151.0966 Record Date 0708/31/2003 0708/31/2003 Principal And Interest Constant 1,~~551~~541,~~894~~251.7725 8,~~841~~800,~~550~~168.9549 Scheduled Principal ~~168~~167,~~263~~880.5387 1,~~028~~029,~~894~~474.3921 Unscheduled Principal 1,~~370~~781,~~760~~503.9497 58,~~223~~299,~~989~~196.4022 Scheduled Interest 1,~~383~~373,~~631~~370.2438 7,~~812~~770,~~656~~694.5628 Servicing Fees 5554,~~172~~787.2940 ~~311~~310,~~627~~064.9463 Master Servicing Fees 0.00 0.00 Trustee Fee ~~551~~547.6292 3,~~115~~100.1747 FRY Amount 0.00 0.00 Special Hazard Fee 0.00 0.00 Other Fee 9796,~~362~~387.2702 ~~649~~645,~~009~~661.2621 Pool Insurance Fee 0.00 0.00 Spread Fee 1 0.00 0.00 Spread Fee 2 0.00 0.00 Spread Fee 3 0.00 0.00 Net Interest 1,~~328~~318,~~458~~582.9598 7,~~501~~460,~~028~~629.6265 Realized Loss Amount 0.00 0.00 Cumulative Realized Loss 0.00 0.00 Percentage of Cumulative Losses 0.00 0.00 Prepayment Penalties 0.00 0.00 Special Servicing Fee 0.00 0.00 Pass-Through Rate 6.~~691113~~689385 6.~~593342~~590749

Filing Compare · OPTION ONE MORTGAGE ACCEP CORP ASSET BACK CERTS SER 2003-4