8-K 1 bsa04ac4_nov.txt NOVEMBER 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): November 26, 2004 BEAR STEARNS ASSET BACKED SECURITIES I TRUST Asset Backed Certificates, Series 2004-AC4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-113636-08 54-2157795 Pooling and Servicing Agreement) (Commission 54-2157796 (State or other File Number) 54-6636452 jurisdiction IRS EIN of Incorporation) C/O Wells Fargo Bank, 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) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On November 26, 2004 a distribution was made to holders of BEAR STEARNS ASSET BACKED SECURITIES I TRUST, Asset Backed Certificates, Series 2004-AC4 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset Backed Certificates, Series 2004-AC4 Trust, relating to the November 26, 2004 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. BEAR STEARNS ASSET BACKED SECURITIES I TRUST Asset Backed Certificates, Series 2004-AC4 Trust (Registrant) By: Wells Fargo Bank, N.A. as Securities Administrator By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 11/30/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset Backed Certificates, Series 2004-AC4 Trust, relating to the November 26, 2004 distribution. EX-99.1

Bear Stearns Asset Backed Securities ~~Asset~~Mortgage ~~Backed~~Pass-Through Certificates Record Date: 810/31/2004 Distribution Date: 911/2726/2004 BSA Series: 2004-AC4 Contact: Customer Service - CTSLink Wells Fargo Bank, 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 073879EA2 SEN 5.33000% 7472,~~253~~409,~~874~~661.6292 ~~329~~321,~~810~~619.9658 1666,~~099,555~~894.2075 A-2 073879EB0 SEN 5.50000% ~~184~~179,~~035~~464,~~753~~933.1241 ~~843~~822,~~497~~547.2061 21,~~725~~652,~~210~~876.9040 A-3 073879EC8 SEN 5.25000% 7472,~~154~~064,~~391~~283.2451 ~~324~~315,~~425~~281.4624 1755,~~246,162~~814.5505 A-4 073879ED6 SEN 5.25000% 10,000,000.00 43,750.00 0.00 A-5 073879EE4 SEN 2.~~11500~~43250% 13,~~464~~130,~~702~~285.6036 2326,~~731~~616.5418 ~~199~~120,~~386~~930.0125 A-6 073879EF1 SEN 5.~~88500~~56750% 0.00 6660,~~033~~919.1505 0.00 M-1 073879EG9 SUB 2.~~21500~~53250% 3736,~~690~~754,~~276~~178.7193 7180,~~888~~152.9719 ~~558~~338,~~119~~506.5688 M-2 073879EH7 SUB 23.~~76500~~08250% 27,~~984~~289,~~800~~753.2738 6672,~~631~~437.0324 ~~414~~251,~~400~~339.3629 B 073879EJ3 SUB 3.~~51500~~83250% 25,~~954~~309,~~204~~590.3150 7883,~~558~~526.3392 ~~384~~233,~~331~~101.1994 C 073879EK0 OC 0.00000% 3,875,243.00 ~~480~~440,~~471~~215.1168 0.00 P 073879EL8 SEN 0.00000% 100.00 030,509.0095 0.00 R-1 073879EM6 RES 0.00000% 0.00 0.00 0.00 R-2 073879EN4 RES 0.00000% 0.00 0.00 0.00 R-3 073879EP9 RES 0.00000% 0.00 0.00 0.00 Totals ~~451~~440,~~413~~298,~~345~~030.8701 2,~~328~~297,~~797~~575.7564 64,~~627~~019,~~165~~463.7756

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 7371,~~154~~742,~~319~~767.4217 1988,~~429,366~~514.1633 0.00 A-2 0.00 ~~181~~177,~~310~~812,~~542~~057.2200 32,~~568~~475,~~708~~424.1001 0.00 A-3 0.00 7271,~~908~~308,~~228~~469.6846 1,~~570~~071,~~588~~095.0129 0.00 A-4 0.00 10,000,000.00 43,750.00 0.00 A-5 0.00 13,~~265~~009,~~316~~355.5911 ~~223~~147,~~117~~546.5543 0.00 A-6 0.00 0.00 6660,~~033~~919.1505 0.00 M-1 0.00 3736,~~132~~415,~~157~~672.1504 ~~630~~418,~~008~~659.5307 0.00 M-2 0.00 27,~~570~~038,~~399~~414.9009 ~~481~~323,~~031~~776.3953 0.00 B 0.00 25,~~569~~076,~~873~~488.1255 ~~462~~316,~~889~~628.5286 0.00 C 0.00 3,875,243.00 ~~480~~440,~~471~~215.1168 0.00 P 0.00 100.00 030,509.0095 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 ~~444~~436,~~786~~278,~~180~~566.0842 86,~~955~~317,~~963~~039.5220 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 75,000,000.00 7472,~~253~~409,~~874~~661.6292 0.00 1666,~~099,555~~894.2075 0.00 0.00 A-2 185,885,000.00 ~~184~~179,~~035~~464,~~753~~933.1241 0.00 21,~~725~~652,~~210~~876.9040 0.00 0.00 A-3 75,000,000.00 7472,~~154~~064,~~391~~283.2451 0.00 1755,~~246,162~~814.5505 0.00 0.00 A-4 10,000,000.00 10,000,000.00 0.00 0.00 0.00 0.00 A-5 13,600,000.00 13,~~464~~130,~~702~~285.6036 0.00 ~~199~~120,~~386~~930.0125 0.00 0.00 A-6 0.00 0.00 0.00 0.00 0.00 0.00 M-1 38,069,000.00 3736,~~690~~754,~~276~~178.7193 0.00 ~~558~~338,~~119~~506.5688 0.00 0.00 M-2 28,266,000.00 27,~~984~~289,~~800~~753.2738 0.00 ~~414~~251,~~400~~339.3629 0.00 0.00 B 26,215,000.00 25,~~954~~309,~~204~~590.3150 0.00 ~~384~~233,~~331~~101.1994 0.00 0.00 C 3,875,954.58 3,875,243.00 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 455,911,054.58 ~~451~~440,~~413~~298,~~345~~030.8701 0.00 64,~~627~~019,~~165~~463.7756 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 1666,~~099,555~~894.2075 7371,~~154~~742,~~319~~767.4217 0.~~97539093~~95657023 1666,~~099,555~~894.2075 A-2 21,~~725~~652,~~210~~876.9040 ~~181~~177,~~310~~812,~~542~~057.2200 0.~~97539093~~95657023 21,~~725~~652,~~210~~876.9040 A-3 1755,~~246,162~~814.5505 7271,~~908~~308,~~228~~469.6846 0.~~97210972~~95077959 1755,~~246,162~~814.5505 A-4 0.00 10,000,000.00 1.00000000 0.00 A-5 ~~199~~120,~~386~~930.0125 13,~~265~~009,~~316~~355.5911 0.~~97539093~~95657023 ~~199~~120,~~386~~930.0125 A-6 0.00 0.00 0.00000000 0.00 M-1 ~~558~~338,~~119~~506.5688 3736,~~132~~415,~~157~~672.1504 0.~~97539093~~95657023 ~~558~~338,~~119~~506.5688 M-2 ~~414~~251,~~400~~339.3629 27,~~570~~038,~~399~~414.9009 0.~~97539093~~95657023 ~~414~~251,~~400~~339.3629 B ~~384~~233,~~331~~101.1994 25,~~569~~076,~~873~~488.1255 0.~~97539093~~95657023 ~~384~~233,~~331~~101.1994 C 0.00 3,875,243.00 0.99981641 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 64,~~627~~019,~~165~~463.7756 ~~444~~436,~~786~~278,~~180~~566.0842 0.~~97559859~~95693790 64,~~627~~019,~~165~~463.7756

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 75,000,000.00 ~~990~~965.~~05166160~~46215893 0.00000000 148.~~66073600~~89193000 0.00000000 A-2 185,885,000.00 ~~990~~965.~~05166162~~46215892 0.00000000 148.~~66073594~~89192996 0.00000000 A-3 75,000,000.00 ~~988~~960.~~72521653~~85711347 0.00000000 1610.~~61550067~~07752067 0.00000000 A-4 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 13,600,000.00 ~~990~~965.~~05166176~~46215882 0.00000000 148.~~66073603~~89193015 0.00000000 A-6 0.00 0.00000000 0.00000000 0.00000000 0.00000000 M-1 38,069,000.00 ~~990~~965.~~05166172~~46215897 0.00000000 148.~~66073603~~89192992 0.00000000 M-2 28,266,000.00 ~~990~~965.~~05166171~~46215878 0.00000000 148.~~66073587~~89192988 0.00000000 B 26,215,000.00 ~~990~~965.~~05166164~~46215907 0.00000000 148.~~66073584~~89192981 0.00000000 C 3,875,954.58 999.81641168 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

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 148.~~66073600~~89193000 ~~975~~956.~~39092560~~57022893 0.~~97539093~~95657023 148.~~66073600~~89193000 A-2 0.00000000 148.~~66073594~~89192996 ~~975~~956.~~39092568~~57022890 0.~~97539093~~95657023 148.~~66073594~~89192996 A-3 0.00000000 1610.~~61550067~~07752067 ~~972~~950.~~10971573~~77959280 0.~~97210972~~95077959 1610.~~61550067~~07752067 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 148.~~66073603~~89193015 ~~975~~956.~~39092574~~57022868 0.~~97539093~~95657023 148.~~66073603~~89193015 A-6 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 M-1 0.00000000 148.~~66073603~~89192992 ~~975~~956.~~39092569~~57022880 0.~~97539093~~95657023 148.~~66073603~~89192992 M-2 0.00000000 148.~~66073587~~89192988 ~~975~~956.~~39092549~~57022890 0.~~97539093~~95657023 148.~~66073587~~89192988 B 0.00000000 148.~~66073584~~89192981 ~~975~~956.~~39092581~~57022888 0.~~97539093~~95657023 148.~~66073584~~89192981 C 0.00000000 0.00000000 999.81641168 0.99981641 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 75,000,000.00 5.33000% 7472,~~253~~409,~~874~~661.6292 ~~329~~321,~~810~~619.9658 0.00 0.00 A-2 185,885,000.00 5.50000% ~~184~~179,~~035~~464,~~753~~933.1241 ~~843~~822,~~497~~547.2061 0.00 0.00 A-3 75,000,000.00 5.25000% 7472,~~154~~064,~~391~~283.2451 ~~324~~315,~~425~~281.4624 0.00 0.00 A-4 10,000,000.00 5.25000% 10,000,000.00 43,750.00 0.00 0.00 A-5 13,600,000.00 2.~~11500~~43250% 13,~~464~~130,~~702~~285.6036 2326,~~731~~616.5418 0.00 0.00 A-6 0.00 5.~~88500~~56750% 13,~~464~~130,~~702~~285.6036 6660,~~033~~919.1505 0.00 0.00 M-1 38,069,000.00 2.~~21500~~53250% 3736,~~690~~754,~~276~~178.7193 7180,~~888~~152.9719 0.00 0.00 M-2 28,266,000.00 23.~~76500~~08250% 27,~~984~~289,~~800~~753.2738 6672,~~631~~437.0324 0.00 0.00 B 26,215,000.00 3.~~51500~~83250% 25,~~954~~309,~~204~~590.3150 7883,~~558~~526.3392 0.00 0.00 C 3,875,954.58 0.00000% 3,875,243.00 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 455,911,054.58 1,~~848~~826,~~326~~850.6401 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 ~~329~~321,~~810~~619.9658 0.00 7371,~~154~~742,~~319~~767.4217 A-2 0.00 0.00 ~~843~~822,~~497~~547.2061 0.00 ~~181~~177,~~310~~812,~~542~~057.2200 A-3 0.00 0.00 ~~324~~315,~~425~~281.4624 0.00 7271,~~908~~308,~~228~~469.6846 A-4 0.00 0.00 43,750.00 0.00 10,000,000.00 A-5 0.00 0.00 2326,~~731~~616.5418 0.00 13,~~265~~009,~~316~~355.5911 A-6 0.00 0.00 6660,~~033~~919.1505 0.00 13,~~265~~009,~~316~~355.5911 M-1 0.00 0.00 7180,~~888~~152.9719 0.00 3736,~~132~~415,~~157~~672.1504 M-2 0.00 0.00 6672,~~631~~437.0324 0.00 27,~~570~~038,~~399~~414.9009 B 0.00 0.00 7883,~~558~~526.3392 0.00 25,~~569~~076,~~873~~488.1255 C 0.00 0.00 ~~480~~440,~~471~~215.1168 0.00 3,875,243.00 P 0.00 0.00 030,509.0095 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 2,~~328~~297,~~797~~575.7564 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 75,000,000.00 5.33000% ~~990~~965.~~05166160~~46215893 4.~~39747947~~28826107 0.00000000 0.00000000 A-2 185,885,000.00 5.50000% ~~990~~965.~~05166162~~46215892 4.~~53773677~~42503489 0.00000000 0.00000000 A-3 75,000,000.00 5.25000% ~~988~~960.~~72521653~~85711347 4.~~32567280~~20374987 0.00000000 0.00000000 A-4 10,000,000.00 5.25000% 1000.00000000 4.37500000 0.00000000 0.00000000 A-5 13,600,000.00 2.~~11500~~43250% ~~990~~965.~~05166176~~46215882 1.~~74496618~~95707206 0.00000000 0.00000000 A-6 0.00 5.~~88500~~56750% ~~990~~965.~~05166176~~46215882 4.~~85537868~~47934191 0.00000000 0.00000000 M-1 38,069,000.00 2.~~21500~~53250% ~~990~~965.~~05166172~~46215897 12.~~88838609~~10544511 0.00000000 0.00000000 M-2 28,266,000.00 23.~~76500~~08250% ~~990~~965.~~05166171~~46215878 2.~~35728543~~56269865 0.00000000 0.00000000 B 26,215,000.00 3.~~51500~~83250% ~~990~~965.~~05166164~~46215907 23.~~99669388~~18622621 0.00000000 0.00000000 C 3,875,954.58 0.00000% 999.81641168 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) Per $1 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 4.~~39747947~~28826107 0.00000000 ~~975~~956.~~39092560~~57022893 A-2 0.00000000 0.00000000 4.~~53773677~~42503489 0.00000000 ~~975~~956.~~39092568~~57022890 A-3 0.00000000 0.00000000 4.~~32567280~~20374987 0.00000000 ~~972~~950.~~10971573~~77959280 A-4 0.00000000 0.00000000 4.37500000 0.00000000 1000.00000000 A-5 0.00000000 0.00000000 1.~~74496618~~95707206 0.00000000 ~~975~~956.~~39092574~~57022868 A-6 0.00000000 0.00000000 4.~~85537868~~47934191 0.00000000 ~~975~~956.~~39092574~~57022868 M-1 0.00000000 0.00000000 12.~~88838609~~10544511 0.00000000 ~~975~~956.~~39092569~~57022880 M-2 0.00000000 0.00000000 2.~~35728543~~56269865 0.00000000 ~~975~~956.~~39092549~~57022890 B 0.00000000 0.00000000 23.~~99669388~~18622621 0.00000000 ~~975~~956.~~39092581~~57022888 C 0.00000000 0.00000000 ~~123~~113.~~96200732~~57606776 0.00000000 999.81641168 P 0.00000000 0.00000000 0305099.~~00000000~~50000000 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 96,~~056~~390,~~275~~007.9535 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 66107,~~775~~422.1095 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 96,~~123~~497,~~051~~430.0530 Withdrawals Reimbursement for Servicer Advances 6884,~~922~~635.9244 Payment of Service Fee 9895,~~164~~755.6166 Payment of Interest and Principal 86,~~955~~317,~~963~~039.5220 Total Withdrawals (Pool Distribution Amount) 96,~~123~~497,~~051~~430.0530 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee 9491,~~044~~728.4374 Master Servicing Fee 3,~~761~~669.7815 Miscellaneous Fee ~~358~~357.4077 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 9895,~~164~~755.6166

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 23 0 0 23 ~~156~~253,~~067~~499.0877 0.00 0.00 ~~156~~253,~~067~~499.0877 30 Days 4555 0 0 0 4555 812,~~830~~628,~~586~~637.7988 0.00 0.00 0.00 812,~~830~~628,~~586~~637.7988 60 Days 513 0 0 0 513 ~~653~~2,~~659~~034,850.4521 0.00 0.00 0.00 ~~653~~2,~~659~~034,850.4521 90 Days 49 0 0 0 49 ~~733~~1,~~565~~469,735.8352 0.00 0.00 0.00 ~~733~~1,~~565~~469,735.8352 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 01 0 0 0 01 0185,165.0083 0.00 0.00 0.00 0185,165.0083 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 5478 23 0 0 5681 1016,~~217~~318,~~812~~389.0744 ~~156~~253,~~067~~499.0877 0.00 0.00 1016,~~373~~571,~~879~~889.1521 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.~~103146~~157729% 0.000000% 0.000000% 0.~~103146~~157729% 0.~~035060~~058055% 0.000000% 0.000000% 0.~~035060~~058055% 30 Days 2.~~320784~~891693% 0.000000% 0.000000% 0.000000% 2.~~320784~~891693% 12.~~983778~~892119% 0.000000% 0.000000% 0.000000% 12.~~983778~~892119% 60 Days 0.~~257865~~683491% 0.000000% 0.000000% 0.000000% 0.~~257865~~683491% 0.~~146844~~466007% 0.000000% 0.000000% 0.000000% 0.~~146844~~466007% 90 Days 0.~~206292~~473186% 0.000000% 0.000000% 0.000000% 0.~~206292~~473186% 0.~~164794~~336588% 0.000000% 0.000000% 0.000000% 0.~~164794~~336588% 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~~052576% 0.000000% 0.000000% 0.000000% 0.~~000000~~052576% 0.~~000000~~042405% 0.000000% 0.000000% 0.000000% 0.~~000000~~042405% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 24.~~784941~~100946% 0.~~103146~~157729% 0.000000% 0.000000% 24.~~888087~~258675% 23.~~295416~~737119% 0.~~035060~~058055% 0.000000% 0.000000% 23.~~330476~~795174%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 66107,~~775~~422.1095

COLLATERAL STATEMENT Collateral Description Mixed Fixed Weighted Average Gross Coupon 6.~~451638~~439698% Weighted Average Net Coupon 6.~~201638~~189698% Weighted Average Pass-Through Rate 6.~~190685~~178723% Weighted Average Maturity(Stepdown Calculation ) ~~330~~328 Beginning Scheduled Collateral Loan Count 1,~~967~~920 Number Of Loans Paid In Full 2818 Ending Scheduled Collateral Loan Count 1,~~939~~902 Beginning Scheduled Collateral Balance ~~451~~440,~~413~~297,~~245~~930.8500 Ending Scheduled Collateral Balance ~~444~~436,~~786~~278,~~080~~466.0843 Ending Actual Collateral Balance at 31-~~Aug~~Oct-2004 ~~445~~436,~~139~~656,~~908~~892.7304 Monthly P &I Constant 2,~~868~~802,~~320~~688.6890 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Scheduled Principal ~~441~~439,~~358~~867.3051 Unscheduled Principal 63,~~185~~579,~~807~~596.4706 Required Overcollateralization Amount 0.00 Overcollateralized Increase Amount 0.00 Overcollateralized reduction Amount 0.00 Specified O/C Amount 3,875,243.00 Overcollateralized Amount 3,875,243.00 Overcollateralized Deficiency Amount 0.00 Base Overcollateralized Amount 0.00 Extra principal distribution Amount 0.00 Excess Cash Amount ~~480~~470,~~471~~725.1163

Miscellaneous Reporting Net Wac Rate Carryover Amount A-1 0.00 Net Wac Rate Carryover Amount A-2 0.00 Net Wac Rate Carryover Amount A-3 0.00 Net Wac Rate Carryover Amount A-4 0.00 Net Wac Rate Carryover Amount A-5 0.00 Net Wac Rate Carryover Amount A-6 0.00 Net Wac Rate Carryover Amount B 0.00 Net Wac Rate Carryover Amount M-1 0.00 Net Wac Rate Carryover Amount M-2 0.00 Three Month Rolling Average 0.~~003348~~006758%

Filing Compare · BEAR STEARNS ASSET BACKED SECURITIES I TRUST 2004-AC4