8-K 1 opt03001.txt DECEMBER 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): December 26, 2003 OPTION ONE MORTGAGE ACCEPTANCE CORPORATION Asset-Backed Certificates, Series 2003-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-82832-06 54-2090852 Pooling and Servicing Agreement) (Commission 54-2090854 (State or other File Number) 54-2090853 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank Minnesota, N.A. 9062 Old Annapolis Road Columbia, MD 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 December 26, 2003 a distribution was made to holders of OPTION ONE MORTGAGE ACCEPTANCE CORPORATION, Asset-Backed Certificates, Series 2003-1 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 2003-1 Trust, relating to the December 26, 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 ACCEPTANCE CORPORATION Asset-Backed Certificates, Series 2003-1 Trust By: Wells Fargo Bank Minnesota, N.A. as Trustee By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 1/7/04 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset- Backed Certificates, Series 2003-1 Trust, relating to the December 26, 2003 distribution. EX-99.1

Option One Mortgage Loan Trust Asset-Backed Certificates Record Date: 911/30/03 Distribution Date: 1012/2726/03 OOMC Series: 2003-1 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 68389FCZ5 SEN 1.~~54000~~53875% ~~448~~407,~~278~~916,~~873~~299.6125 ~~613~~540,~~643~~503.9726 1718,~~901~~239,~~220~~531.6980 A-2 68389FDA9 SEN 1.~~54000~~53875% ~~812~~761,~~455~~169,~~281~~285.1937 1,~~112~~008,~~161~~575.0173 2336,~~747~~497,~~997~~815.8590 M-1 68389FDB7 MEZ 2.~~02000~~01875% 72,000,000.00 ~~129~~125,~~280~~162.0050 0.00 M-2 68389FDC5 MEZ 3.~~07000~~06875% 60,000,000.00 ~~163~~158,~~733~~552.3308 0.00 M-3 68389FDD3 MEZ 4.~~62000~~61875% 36,000,000.00 ~~147~~143,~~840~~181.0025 0.00 M-4 68389FDE1 MEZ 5.~~37000~~36875% 16,000,000.00 7673,~~373~~969.3344 0.00 C OPT03001C OC 0.00000% 8,000,000.00 5,~~881~~469,~~581~~938.8813 0.00 P OPT03001P Pre_Pay 0.00000% 100.00 ~~808~~1,~~851~~090,109.2891 0.00 R-1 OPT0301R1 RES 0.00000% 0.00 0.00 0.00 R-2 OPT0301R2 RES 0.00000% 0.00 0.00 0.00 R-3 OPT0301R3 RES 0.00000% 0.00 0.00 0.00 Totals 1,~~452~~361,~~734~~085,~~254~~684.8062 8,~~933~~609,~~464~~992.8030 4154,~~649~~737,~~218~~347.5470

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 ~~430~~389,~~377~~676,~~652~~767.9245 18,~~514~~780,~~864~~035.6606 0.00 A-2 0.00 ~~788~~724,~~707~~671,~~283~~469.3547 2437,~~860~~506,~~158~~391.8663 0.00 M-1 0.00 72,000,000.00 ~~129~~125,~~280~~162.0050 0.00 M-2 0.00 60,000,000.00 ~~163~~158,~~733~~552.3308 0.00 M-3 0.00 36,000,000.00 ~~147~~143,~~840~~181.0025 0.00 M-4 0.00 16,000,000.00 7673,~~373~~969.3344 0.00 C 0.00 8,000,000.00 5,~~881~~469,~~581~~938.8813 0.00 P 0.00 100.00 ~~808~~1,~~851~~090,109.2891 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,~~411~~306,~~085~~348,~~036~~336.2792 5063,~~582~~347,~~683~~340.3400 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-1 500,000,000.00 ~~448~~407,~~278~~916,~~873~~299.6125 0.00 1718,~~901~~239,~~220~~531.6980 0.00 0.00 A-2 908,000,000.00 ~~812~~761,~~455~~169,~~281~~285.1937 0.00 2336,~~747~~497,~~997~~815.8590 0.00 0.00 M-1 72,000,000.00 72,000,000.00 0.00 0.00 0.00 0.00 M-2 60,000,000.00 60,000,000.00 0.00 0.00 0.00 0.00 M-3 36,000,000.00 36,000,000.00 0.00 0.00 0.00 0.00 M-4 16,000,000.00 16,000,000.00 0.00 0.00 0.00 0.00 C 7,999,900.00 8,000,000.00 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 1,600,000,000.00 1,~~452~~361,~~734~~085,~~254~~684.8062 0.00 4154,~~649~~737,~~218~~347.5470 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 1718,~~901~~239,~~220~~531.6980 ~~430~~389,~~377~~676,~~652~~767.9245 0.~~86075531~~77935353 1718,~~901~~239,~~220~~531.6980 A-2 2336,~~747~~497,~~997~~815.8590 ~~788~~724,~~707~~671,~~283~~469.3547 0.~~86862036~~79809633 2336,~~747~~497,~~997~~815.8590 M-1 0.00 72,000,000.00 1.00000000 0.00 M-2 0.00 60,000,000.00 1.00000000 0.00 M-3 0.00 36,000,000.00 1.00000000 0.00 M-4 0.00 16,000,000.00 1.00000000 0.00 C 0.00 8,000,000.00 1.00001250 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 4154,~~649~~737,~~218~~347.5470 1,~~411~~306,~~085~~348,~~036~~336.2792 0.~~88192815~~81646771 4154,~~649~~737,~~218~~347.5470

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 500,000,000.00 ~~896~~815.~~55774722~~83259850 0.00000000 3536.~~80244138~~47906360 0.00000000 A-2 908,000,000.00 ~~894~~838.~~77453876~~29216450 0.00000000 2640.~~15418265~~19583249 0.00000000 M-1 72,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-2 60,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-3 36,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-4 16,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 C 7,999,900.00 1000.01250016 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 3536.~~80244138~~47906360 ~~860~~779.~~75530584~~35353490 0.~~86075531~~77935353 3536.~~80244138~~47906360 A-2 0.00000000 2640.~~15418265~~19583249 ~~868~~798.~~62035611~~09633202 0.~~86862036~~79809633 2640.~~15418265~~19583249 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 C 0.00000000 0.00000000 1,000.01250016 1.00001250 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, Bankruptcy, 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-1 500,000,000.00 1.~~54000~~53875% ~~448~~407,~~278~~916,~~873~~299.6125 ~~613~~540,~~643~~503.9726 0.00 0.00 A-2 908,000,000.00 1.~~54000~~53875% ~~812~~761,~~455~~169,~~281~~285.1937 1,~~112~~008,~~161~~575.0173 0.00 0.00 M-1 72,000,000.00 2.~~02000~~01875% 72,000,000.00 ~~129~~125,~~280~~162.0050 0.00 0.00 M-2 60,000,000.00 3.~~07000~~06875% 60,000,000.00 ~~163~~158,~~733~~552.3308 0.00 0.00 M-3 36,000,000.00 4.~~62000~~61875% 36,000,000.00 ~~147~~143,~~840~~181.0025 0.00 0.00 M-4 16,000,000.00 5.~~37000~~36875% 16,000,000.00 7673,~~373~~969.3344 0.00 0.00 C 7,999,900.00 0.00000% 8,000,000.00 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 1,600,000,000.00 2,~~243~~049,~~031~~944.6426 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 ~~613~~540,~~643~~503.9726 0.00 ~~430~~389,~~377~~676,~~652~~767.9245 A-2 0.00 0.00 1,~~112~~008,~~161~~575.0173 0.00 ~~788~~724,~~707~~671,~~283~~469.3547 M-1 0.00 0.00 ~~129~~125,~~280~~162.0050 0.00 72,000,000.00 M-2 0.00 0.00 ~~163~~158,~~733~~552.3308 0.00 60,000,000.00 M-3 0.00 0.00 ~~147~~143,~~840~~181.0025 0.00 36,000,000.00 M-4 0.00 0.00 7673,~~373~~969.3344 0.00 16,000,000.00 C 0.00 0.00 5,~~881~~469,~~581~~938.8813 0.00 8,000,000.00 P 0.00 0.00 ~~808~~1,~~851~~090,109.2891 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 8,~~933~~609,~~464~~992.8030 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, 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-1 500,000,000.00 1.~~54000~~53875% ~~896~~815.~~55774722~~83259850 1.~~22728794~~08100652 0.00000000 0.00000000 A-2 908,000,000.00 1.~~54000~~53875% ~~894~~838.~~77453876~~29216450 1.~~22484693~~11076622 0.00000000 0.00000000 M-1 72,000,000.00 2.~~02000~~01875% 1000.00000000 1.~~79555556~~73836806 0.00000000 0.00000000 M-2 60,000,000.00 3.~~07000~~06875% 1000.00000000 2.~~72888883~~64253467 0.00000000 0.00000000 M-3 36,000,000.00 4.~~62000~~61875% 1000.00000000 43.~~10666667~~97725694 0.00000000 0.00000000 M-4 16,000,000.00 5.~~37000~~36875% 1000.00000000 4.~~77333313~~62309000 0.00000000 0.00000000 C 7,999,900.00 0.00000% 1000.01250016 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.~~22728794~~08100652 0.00000000 ~~860~~779.~~75530584~~35353490 A-2 0.00000000 0.00000000 1.~~22484693~~11076622 0.00000000 ~~868~~798.~~62035611~~09633202 M-1 0.00000000 0.00000000 1.~~79555556~~73836806 0.00000000 1000.00000000 M-2 0.00000000 0.00000000 2.~~72888883~~64253467 0.00000000 1000.00000000 M-3 0.00000000 0.00000000 43.~~10666667~~97725694 0.00000000 1000.00000000 M-4 0.00000000 0.00000000 4.~~77333313~~62309000 0.00000000 1000.00000000 C 0.00000000 0.00000000 ~~735~~683.~~20692509~~75081314 0.00000000 1000.01250016 P 0.00000000 0.00000000 ~~8088512~~10901099.~~80000000~~10000000 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, Bankruptcy,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 5163,~~258~~739,~~837~~769.6404 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) (~~179~~139,~~269~~823.4952) Prepayment Penalties ~~808~~1,~~851~~090,109.2891 Total Deposits 5164,~~888~~690,~~419~~055.43 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 1,~~305~~342,~~736~~715.0943 Payment of Interest and Principal 5063,~~582~~347,~~683~~340.3400 Total Withdrawals (Pool Distribution Amount) 5164,~~888~~690,~~419~~055.43 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee ~~363~~453,~~184~~695.0324 Radian PMI Policy Fee ~~938~~885,~~918~~617.7749 Wells Fargo 3,~~633~~402.2970 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 1,~~305~~342,~~736~~715.0943

OTHER ACCOUNTS Beginning Current Current Ending Account Type Balance Withdrawals Deposits Balance Reserve Fund 1,000.00 0.0004 0.0004 1,000.00

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 2527 1 0 2628 4,~~377~~792,~~682~~809.1241 144,~~883~~698.9448 0.00 4,~~522~~937,~~566~~507.0689 30 Days ~~120~~144 43 13 0 ~~125~~150 1822,~~388~~098,~~606~~495.3425 ~~903~~281,~~570~~101.4021 54232,~~969~~076.1664 0.00 1922,~~347~~611,~~145~~673.9010 60 Days 1726 64 4046 0 6376 24,~~610~~382,~~474~~871.6310 ~~416~~525,~~431~~711.0683 47,~~923~~157,~~287~~122.8504 0.00 712,~~950~~065,~~193~~704.5497 90 Days 117 3249 ~~153~~190 1421 ~~210~~267 1541,~~307,484~~987.5303 36,~~768~~230,~~724~~839.4606 2428,~~082~~260,~~665~~335.1438 12,~~913~~967,~~425~~165.8123 3138,~~072~~000,~~299~~326.9470 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 ~~148~~177 6783 ~~195~~240 1421 ~~424~~521 2227,~~306~~023,~~565~~353.5038 911,~~466~~830,~~408~~461.0451 2935,~~205~~794,~~806~~232.0954 12,~~913~~967,~~425~~165.8123 6277,~~892~~615,~~205~~212.4466 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.~~283382~~326797% 0.~~011335~~012104% 0.000000% 0.~~294718~~338901% 0.~~310117~~366730% 0.~~010264~~011072% 0.000000% 0.~~320380~~377802% 30 Days 1.~~360236~~742919% 0.~~045341~~036311% 0.~~011335~~036311% 0.000000% 1.~~416912~~815541% 1.~~302656~~690906% 0.~~064009~~021509% 0.~~003894~~017758% 0.000000% 1.~~370559~~730173% 60 Days 0.~~192700~~314694% 0.~~068012~~048414% 0.~~453412~~556766% 0.000000% 0.~~714124~~919874% 0.~~184927~~335363% 0.~~029500~~040226% 0.~~348768~~547640% 0.000000% 0.~~563195~~923229% 90 Days 0.~~124688~~084725% 0.~~362730~~593077% 12.~~734301~~299685% 0.~~158694~~254176% 23.~~380413~~231663% 0.~~092623~~041471% 0.~~266978~~476764% 12.~~706025~~162390% 0.~~135548~~227038% 2.~~201174~~907663% 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 12.~~677624~~142338% 01.~~759465~~004599% 2.~~210383~~904866% 0.~~158694~~254176% 46.~~806166~~305979% 12.~~580206~~067740% 0.~~670604~~905229% 2.~~068950~~738860% 0.~~135548~~227038% 45.~~455308~~938867% (7) Delinquencies are stratified according to the information the Servicer has provided. All 90+ delinquencies are reported in the 90 day delinquency field.

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~757~~812,~~273~~387.21 Class A-1 1,099,999,900.00 68.74999375% 980,707,283.35 69.50022558% 30.499767% 0.000000% Class A-2 191,999,900.00 11.99999375% 192,000,000.00 13.60655064% 55.893675% 0.000000% Class M-1 119,999,900.00 7.49999375% 120,000,000.00 8.50409415% 5.102456% 0.000000% Class M-2 59,999,900.00 3.74999375% 60,000,000.00 4.25204707% 4.252047% 0.000000% Class M-3 23,999,900.00 1.49999375% 24,000,000.00 1.70081883% 2.551228% 0.000000% Class M-4 7,999,900.00 0.49999375% 8,000,000.00 0.56693961% 1.133879% 0.000000% Class C 0.00 0.00000000% 0.00 0.00000000% 0.566940% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure96

~~COLLATERAL~~Class ~~STATEMENT~~A-1 ~~Collateral~~1,099,999,900.00 ~~Description~~68.74999375% ~~Mixed~~916,671,469.47 ~~Fixed~~70.17052371% &29.829469% ~~Arm~~0.000000% ~~Weighted~~Class ~~Average~~A-2 ~~Gross~~191,999,900.00 ~~Coupon 7~~11.~~918542~~99999375% ~~Weighted~~192,000,000.00 ~~Average~~14.69745814% ~~Net~~55.473066% ~~Coupon 7~~0.~~618542~~000000% ~~Weighted~~Class ~~Average Pass~~M-~~Through~~1 ~~Rate~~119,999,900.00 67.~~839967~~49999375% ~~Weighted~~120,000,000.00 ~~Average~~9.18591134% ~~Maturity(Stepdown~~5.511547% ~~Calculation~~0.000000% )Class ~~347~~M-2 ~~Beginning~~59,999,900.00 ~~Scheduled~~3.74999375% ~~Collateral Loan Count 9~~60,~~059~~000,000.00 ~~Number~~4.59295567% Of4.592956% ~~Loans~~0.000000% ~~Paid~~Class InM-3 ~~Full 237 Ending Scheduled Collateral Loan Count 8~~23,~~822~~999,900.00 ~~Beginning Scheduled Collateral Balance~~ 1.49999375% 24,~~452~~000,~~734,254~~000.8000 ~~Ending Scheduled Collateral Balance~~ 1~~,411,085,036~~.2683718227% ~~Ending~~2.755773% ~~Actual~~0.000000% ~~Collateral~~Class ~~Balance at 30~~M-~~Sep-2003~~4 17,~~411~~999,~~624,243~~900.8000 ~~Monthly~~0.49999375% ~~P &I Constant 10~~8,~~710~~000,~~182~~000.7800 ~~Special~~0.61239409% ~~Servicing~~1.224788% ~~Fee~~ 0.00000000% ~~Prepayment~~Class ~~Penalties~~C ~~808,851~~0.2800 ~~Realized~~0.00000000% ~~Loss~~0.00 ~~Amount~~0.00000000% ~~179,269~~0.49612394% ~~Cumulative~~0.000000% ~~Realized~~Please ~~Loss~~Refer ~~251,283.14~~to ~~Ending~~the ~~Scheduled~~Prospectus ~~Balance~~Supplement for ~~Premium~~a ~~Loans~~Full ~~1,411,085,036.26~~Description ~~Scheduled~~of ~~Principal~~Loss ~~1,123,901.46 Unscheduled Principal 40,525,317.08~~Exposure

~~Trigger~~COLLATERAL ~~Event~~STATEMENT ~~Not~~Collateral ~~Triggered~~Description InMixed ~~Effect~~Fixed ~~Since~~& NAArm ~~Comments~~Weighted NAAverage Gross Coupon 7.906886% Weighted Average Net Coupon 7.506886% Weighted Average Pass-Through Rate 6.723082% Weighted Average Maturity(Stepdown ~~Date~~Calculation Do) ~~Not~~345 ~~Step~~Beginning ~~Down~~Scheduled Collateral Loan Count 8,551 Number Of Loans Paid In ~~Effect~~Full ~~Since~~289 NAEnding ~~Comments~~Scheduled NACollateral ~~Unscheduled~~Loan ~~Principal-Voluntary~~Count 408,~~139~~262 Beginning Scheduled Collateral Balance 1,~~740~~361,085,684.4362 ~~Unscheduled~~Ending ~~Principal-Involuntary~~Scheduled ~~385~~Collateral Balance 1,~~576~~306,348,336.6592 ~~Credit~~Ending ~~Enhancement~~Actual ~~Percentage~~Collateral 13Balance at 30-Nov-2003 1,306,902,721.~~22140%~~88 ~~Net~~Monthly ~~WAC~~P ~~Carryover~~&I ~~Amount~~Constant 10,027,869.38 Special Servicing Fee 0.00 ~~Other~~Prepayment ~~Income~~Penalties 231,~~337~~090,109.7791 Realized Loss Amount 139,823.52 Cumulative Realized Loss 485,135.14 Ending Scheduled Balance for Premium Loans 1,306,348,336.92 Scheduled Principal 1,059,578.39 Unscheduled Principal 53,677,769.31

~~Miscellaneous~~Trigger ~~Reporting~~Event ~~General~~Not ~~Excess~~Triggered ~~Available~~In ~~Amt~~Effect ~~6,060,851.37~~Since ~~Extra~~NA ~~Principal~~Comments ~~Distribution~~NA ~~Amt~~Stepdown ~~179,269.49~~Date ~~Overcollateralization~~Do ~~Amt~~Not ~~8,000,000.00~~Step ~~Excess~~Down ~~Overcollateralized~~In ~~Amt~~Effect ~~0.00~~Since ~~Overcollateralization~~NA ~~Deficit~~Comments ~~Amt~~NA ~~179~~Unscheduled Principal-Voluntary 52,~~269~~823,364.4997 ~~Overcollateralization~~Unscheduled ~~Increase~~Principal-Involuntary ~~Amt~~854,404.34 0Credit Enhancement Percentage 14.00106386% ~~Overcollateralization~~Net ~~Release~~WAC ~~Amt~~Carryover Amount 0.00 ~~Target~~Other ~~Overcollateralization~~Income ~~Amt 8~~34,~~000,000~~130.0041

~~Group~~Miscellaneous ~~Level~~Reporting ~~Collateral~~General ~~Statement~~Excess ~~Group~~Available ~~Group~~Amt 1 Group 2 Group 3 Collateral Description Mixed Fixed Mixed ARM Mixed Fixed Weighted Average Coupon Rate 7.724595 8.160870 7.652206 Weighted Average Net Rate 7.424595 7.860869 7.352205 Weighted Average Maturity 347 347 345 Beginning Loan Count 973 25,~~587 1~~609,~~536 Loans Paid In Full 29 77 30 Ending Loan Count 944 2,510 1,506 Beginning Scheduled Balance 147,532,200~~761.1669 ~~390,030,676.42~~Extra ~~254,883,725.65 Ending scheduled Balance 142,612,914.68 377,036,945.28 249,117,002.36 Record Date 09/30/2003 09/30/2003 09/30/2003~~ Principal ~~And~~Distribution ~~Interest~~Amt ~~Constant 1~~139,~~084,918~~823.5652 ~~2,921,998.83~~Overcollateralization ~~1,865,625.63~~Amt ~~Scheduled Principal 135~~8,~~229.76 269~~000,~~507~~000.59 240,273.33 Unscheduled Principal 4,784,055.72 12,724,223.55 5,526,449.96 Scheduled Interest 949,688.80 2,652,491.24 1,625,352.30 Servicing Fees 36,883.06 97,507.70 63,721.12 Master Servicing Fees 0.00 ~~0.00~~Excess ~~0.00~~Overcollateralized ~~Trustee~~Amt ~~Fee 368.83 975.75 637.20 FRY Amount~~ 0.00 ~~0.00~~Overcollateralization ~~0.00~~Deficit ~~Special~~Amt ~~Hazard Fee 0.00 0.00 0.00 Other Fee 98~~139,~~502~~823.3852 ~~205,473.74~~Overcollateralization ~~174,521.05~~Increase ~~Pool~~Amt ~~Insurance Fee~~ 0.00 ~~0.00~~Overcollateralization ~~0.00~~Release ~~Spread~~Amt ~~Fee 1~~ 0.00 ~~0.00~~Target ~~0.00~~Overcollateralization ~~Spread~~Amt ~~Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 912~~8,~~805.74 2~~000,~~554,983~~000.~~54 1,561,631.19 Realized Loss Amount 0.~~00 88,847.62 0.00 Cumulative Realized Loss 0.00 131,266.56 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 6.620395 7.225690 6.527555

Group Level Collateral Statement Group Group 41 ~~Total~~Group 2 Group 3 Collateral Description Mixed Fixed Mixed ARM Mixed Fixed ~~& Arm~~ Weighted Average Coupon Rate 7.~~921546~~701671 8.159097 7.~~918542~~635586 Weighted Average Net Rate 7.~~621545~~301671 7.~~618542~~759097 7.235586 Weighted Average Maturity 345 ~~347~~345 343 Beginning Loan Count 3908 2,~~963~~415 91,~~059~~470 Loans Paid In Full ~~101~~27 ~~237~~82 54 Ending Loan Count 3881 2,~~862~~333 81,~~822~~416 Beginning Scheduled Balance ~~660~~136,~~287~~831,~~652~~991.5781 1360,~~452~~396,~~734~~745.42 242,~~254~~584,906.8044 Ending scheduled Balance ~~642~~132,~~318~~374,~~173~~713.9471 1346,~~411~~638,~~085~~592.73 231,~~036~~732,688.2630 Record Date 0911/30/2003 0911/30/2003 11/30/2003 Principal And Interest Constant 41,~~837~~006,~~639~~933.7686 102,~~710~~702,~~182~~607.7836 1,769,997.12 Scheduled Principal ~~478~~128,~~890~~738.7805 1252,~~123~~180.82 226,~~901~~432.4626 Unscheduled Principal 174,~~490~~328,~~587~~540.8505 4013,~~525~~505,~~317~~971.0887 10,625,785.88 Scheduled Interest 4878,~~358~~195.81 2,~~748~~450,426.9854 91,~~586~~543,~~281~~564.3286 Servicing Fees ~~165~~45,~~072~~610.1566 ~~363~~120,~~184~~132.0324 80,861.63 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee ~~1,651~~342.5109 ~~3,633~~900.2999 606.45 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee ~~460~~92,~~421~~375.6011 ~~938~~191,~~918~~656.7721 167,582.97 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 4832,~~193~~585.27 2,~~676~~330,294.8327 91,~~223~~462,~~097~~703.3048 Realized Loss Amount 900.00 22,~~421~~490.8786 ~~179~~(1,~~269~~729.4915) Cumulative Realized Loss ~~120~~0.00 155,~~016~~767.5817 ~~251~~40,~~283~~129.1410 Percentage of Cumulative Losses 0.000000 0.000471 0.0184 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 6.~~781778~~488552 7.117946 6.~~839967~~403599

Filing Compare · OPTION ONE MORT ACCEPT CORP ASSET BACKED CERTS SER 2003 1