8-K 1 bsa05ac4_10507.txt 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): July 25, 2005 BEAR STEARNS ASSET BACKED SECURITIES I TRUST Asset Backed Certificates, Series 2005-AC4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-125422-01 Pooling and Servicing Agreement) (Commission 54-2176720 (State or other File Number) 54-2176721 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank, N.A. 9062 Old Annaoplis rd Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2230 (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 July 25, 2005 a distribution was made to holders of BEAR STEARNS ASSET BACKED SECURITIES I TRUST, Asset Backed Certificates, Series 2005-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 2005-AC4 Trust, relating to the July 25, 2005 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 2005-AC4 Trust (Registrant) By: Wells Fargo Bank, N.A. as Securities Administrator By: /s/ Beth Belfield as Officer By: Beth Belfield as Officer Date: 7/26/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset Backed Certificates, Series 2005-AC4 Trust, relating to the July 25, 2005 distribution. EX-99.1

~~UNITED~~Bear ~~STATES~~Stearns Asset Backed Securities Asset Backed Certificates Record Date: 6/30/2005 Distribution Date: 7/25/2005 Bear Stearns Asset Backed Securities Asset Backed Certificates Series 2005-AC4 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Class CUSIP Description Rate Balance Distribution A 073879YQ7 SEN 5.50000% 150,109,000.00 687,999.58 M-1 073879YH5 SEN 3.72000% 10,653,000.00 38,528.35 M-2 073879YJ1 SEN 3.89000% 10,459,000.00 39,555.36 M-3 073879YK8 SEN 3.95000% 4,842,000.00 18,594.62 B-1 073879YL6 SEN 4.47000% 4,455,000.00 19,360.69 B-2 073879YM4 SEN 4.57000% 4,261,000.00 18,931.86 B-3 073879YN2 SEN 5.02000% 3,292,000.00 16,066.79 B-4 073879YP7 SEN 6.22000% 4,261,000.00 25,767.21 C 073879YT9 SEN 0.00000% 0.00 156,393.33 P 073879YS1 SEN 0.00000% 100.00 0.00 R-1 073879YQ5 SEN 0.00000% 0.00 0.00 R-2 073879YR3 SEN 0.00000% 0.00 0.00 Totals 192,332,100.00 1,021,197.79

~~SECURITIES~~Certificateholder ~~AND~~Distribution ~~EXCHANGE~~Summary ~~COMMISSION~~(continued) Current Ending Cumulative Principal Realized Certificate Total Realized Class Distribution Loss Balance Distribution Losses A 1,061,206.63 0.00 149,047,793.37 1,749,206.21 0.00 M-1 75,312.17 0.00 10,577,687.83 113,840.52 0.00 M-2 73,940.67 0.00 10,385,059.33 113,496.03 0.00 M-3 34,230.88 0.00 4,807,769.12 52,825.50 0.00 B-1 31,494.95 0.00 4,423,505.05 50,855.64 0.00 B-2 30,123.45 0.00 4,230,876.55 49,055.31 0.00 B-3 23,273.04 0.00 3,268,726.96 39,339.83 0.00 B-4 30,123.45 0.00 4,230,876.55 55,890.66 0.00 C 0.00 0.00 1,355,815.76 156,393.33 0.00 P 0.00 0.00 100.00 0.00 0.00 R-1 0.00 0.00 0.00 0.00 0.00 R-2 0.00 0.00 0.00 0.00 0.00 Totals 1,359,705.24 0.00 192,328,210.52 2,380,903.03 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee. This report has been compiled from information provided to Wells Fargo Bank, N.A. by various third parties, which may include the Servicer, Master Servicer, Special Servicer and others. Wells Fargo Bank, N.A. has not independently confirmed the accuracy of information received from these third parties and assumes no duty to do so. Wells Fargo Bank, N.A. expressly disclaims any responsibility for the accuracy or completeness of information furnished by third parties.

~~Washington~~Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) A 150,109,000.00 D150,109,000.00 0.00 1,061,206.63 0.00 0.00 M-1 10,653,000.00 10,653,000.00 0.00 75,312.17 0.00 0.00 M-2 10,459,000.00 10,459,000.00 0.00 73,940.67 0.00 0.00 M-3 4,842,000.00 4,842,000.00 0.00 34,230.88 0.00 0.00 B-1 4,455,000.00 4,455,000.00 0.00 31,494.95 0.00 0.00 B-2 4,261,000.00 4,261,000.00 0.00 30,123.45 0.00 0.00 B-3 3,292,000.00 3,292,000.00 0.00 23,273.04 0.00 0.00 B-4 4,261,000.00 4,261,000.00 0.00 30,123.45 0.00 0.00 C 0.00 ~~20549~~0.00 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 Totals 192,332,100.00 192,332,100.00 0.00 1,359,705.24 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.

~~Form~~Principal 8Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution A 1,061,206.63 149,047,793.37 0.99293043 1,061,206.63 M-K1 75,312.17 10,577,687.83 0.99293043 75,312.17 M-2 73,940.67 10,385,059.33 0.99293043 73,940.67 M-3 34,230.88 4,807,769.12 0.99293043 34,230.88 B-1 31,494.95 4,423,505.05 0.99293043 31,494.95 B-2 30,123.45 4,230,876.55 0.99293043 30,123.45 B-3 23,273.04 3,268,726.96 0.99293043 23,273.04 B-4 30,123.45 4,230,876.55 0.99293043 30,123.45 C 0.00 1,355,815.76 0.00000000 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 Totals 1,359,705.24 192,328,210.52 0.99997978 1,359,705.24

~~CURRENT~~Principal ~~REPORT~~Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A 150,109,000.00 1000.00000000 0.00000000 7.06957364 0.00000000 M-1 10,653,000.00 1000.00000000 0.00000000 7.06957383 0.00000000 M-2 10,459,000.00 1000.00000000 0.00000000 7.06957357 0.00000000 M-3 4,842,000.00 1000.00000000 0.00000000 7.06957456 0.00000000 B-1 4,455,000.00 1000.00000000 0.00000000 7.06957351 0.00000000 B-2 4,261,000.00 1000.00000000 0.00000000 7.06957287 0.00000000 B-3 3,292,000.00 1000.00000000 0.00000000 7.06957473 0.00000000 B-4 4,261,000.00 1000.00000000 0.00000000 7.06957287 0.00000000 C 0.00 0.00000000 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

~~Pursuant~~Principal toDistribution ~~Section~~Factors 13Statement or(continued) 15Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (d3) ofReduction Balance Percentage Distribution A 0.00000000 7.06957364 992.93042636 0.99293043 7.06957364 M-1 0.00000000 7.06957383 992.93042617 0.99293043 7.06957383 M-2 0.00000000 7.06957357 992.93042643 0.99293043 7.06957357 M-3 0.00000000 7.06957456 992.93042544 0.99293043 7.06957456 B-1 0.00000000 7.06957351 992.93042649 0.99293043 7.06957351 B-2 0.00000000 7.06957287 992.93042713 0.99293043 7.06957287 B-3 0.00000000 7.06957473 992.93042527 0.99293043 7.06957473 B-4 0.00000000 7.06957287 992.93042713 0.99293043 7.06957287 C 0.00000000 0.00000000 0.00000000 0.00000000 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 (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.

~~Securities~~Interest ~~Exchange~~Distribution ~~Act~~Statement Beginning Payment of ~~1934~~Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall A 150,109,000.00 5.50000% 150,109,000.00 687,999.58 0.00 0.00 M-1 10,653,000.00 3.72000% 10,653,000.00 38,528.35 0.00 0.00 M-2 10,459,000.00 3.89000% 10,459,000.00 39,555.36 0.00 0.00 M-3 4,842,000.00 3.95000% 4,842,000.00 18,594.63 0.00 0.00 B-1 4,455,000.00 4.47000% 4,455,000.00 19,360.69 0.00 0.00 B-2 4,261,000.00 4.57000% 4,261,000.00 18,931.86 0.00 0.00 B-3 3,292,000.00 5.02000% 3,292,000.00 16,066.79 0.00 0.00 B-4 4,261,000.00 6.22000% 4,261,000.00 25,767.21 0.00 0.00 C 0.00 0.00000% 193,687,965.01 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 Totals 192,332,100.00 864,804.47 0.00 0.00

~~Date~~Interest ofDistribution ~~Report~~Statement (~~Date~~continued) ofRemaining ~~earliest~~Ending ~~event~~Non-Supported ~~reported~~Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4): ~~July~~Distribution 22Shortfall Balance A 0.00 0.00 687,999.58 ~~2005~~0.00 149,047,793.37 M-1 0.00 0.00 38,528.35 0.00 10,577,687.83 M-2 0.00 0.00 39,555.36 0.00 10,385,059.33 M-3 0.00 0.00 18,594.62 0.00 4,807,769.12 B-1 0.00 0.00 19,360.69 0.00 4,423,505.05 B-2 0.00 0.00 18,931.86 0.00 4,230,876.55 B-3 0.00 0.00 16,066.79 0.00 3,268,726.96 B-4 0.00 0.00 25,767.21 0.00 4,230,876.55 C 0.00 0.00 156,393.33 0.00 192,328,110.52 P 0.00 0.00 0.00 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 Totals 0.00 0.00 1,021,197.79 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.

~~STRUCTURED~~Interest ~~ASSET~~Distribution ~~MORTGAGE~~Factors ~~INVESTMENTS~~Statement IIBeginning ~~INC~~Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall A 150,109,000.00 5.50000% 1000.00000000 4.58333331 0.00000000 0.00000000 M-1 10,653,000.00 3.72000% 1000.00000000 3.61666667 0.00000000 0.00000000 M-2 10,459,000.00 3.89000% 1000.00000000 3.78194474 0.00000000 0.00000000 M-3 4,842,000.00 3.95000% 1000.00000000 3.84027881 0.00000000 0.00000000 B-1 4,455,000.00 4.47000% 1000.00000000 4.34583389 0.00000000 0.00000000 B-2 4,261,000.00 4.57000% 1000.00000000 4.44305562 0.00000000 0.00000000 B-3 3,292,000.00 5.02000% 1000.00000000 4.88055589 0.00000000 0.00000000 B-4 4,261,000.00 6.22000% 1000.00000000 6.04722131 0.00000000 0.00000000 C 0.00 0.00000% 0.00000000 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 (5) Per $1 denomination.

Interest Distribution Factors Statement (ascontinued) ~~depositor~~Remaining ~~under~~Ending anNon-Supported ~~Indenture,~~Total ~~dated~~Unpaid asCertificate/ ofInterest ~~July~~Realized ~~29,~~Interest ~~2005,~~Interest ~~providing~~Notional ~~for,~~Class ~~inter~~Shortfall ~~alia,~~Losses ~~the~~(6) ~~issuance~~Distribution ofShortfall ~~Mortgage~~Balance A 0.00000000 0.00000000 4.58333331 0.00000000 992.93042636 M-~~Backed~~1 ~~Notes,~~0.00000000 ~~Series~~0.00000000 ~~2005~~3.61666667 0.00000000 992.93042617 M-2 0.00000000 0.00000000 3.78194474 0.00000000 992.93042643 M-3 0.00000000 0.00000000 3.84027675 0.00000000 992.93042544 B-1 0.00000000 0.00000000 4.34583389 0.00000000 992.93042649 B-2 0.00000000 0.00000000 4.44305562 0.00000000 992.93042713 B-3 0.00000000 0.00000000 4.88055589 0.00000000 992.93042527 B-4 0.00000000 0.00000000 6.04722131 0.00000000 992.93042713 C 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 P 0.00000000 0.00000000 0.00000000 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 (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 2,398,483.00 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (~~Exact~~Servicer ~~name~~Advances) 22,771.69 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 2,421,254.69 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of ~~registrant~~Service asFee ~~specified~~40,351.66 inPayment ~~its~~of ~~charter~~Interest and Principal 2,380,903.03 Total Withdrawals (Pool Distribution Amount) 2,421,254.69 Ending Balance 0.00

Delaware	333-120916	33-0183252
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification Number)
383 Madison Avenue New York, New York		10179
(Address of Principal Executive Offices)		(Zip Code)

~~Registrant’s~~SERVICING ~~telephone~~FEES ~~number~~Gross Servicing Fee 40,351.66 ~~including~~Supported ~~area~~Prepayment/Curtailment ~~code: (212)272-2000~~Interest Shortfall 0.00 Net Servicing Fee 40,351.66

~~Check~~OTHER ~~the~~ACCOUNTS ~~appropriate~~Beginning ~~box~~Current ~~below~~Current ifEnding ~~the~~Account ~~Form~~Type ~~8-K~~Balance ~~filing~~Withdrawals isDeposits ~~intended~~Balance toReserve ~~simultaneously~~Fund ~~satisfy~~5,000.00 ~~the~~3,304.86 ~~filing~~3,304.86 ~~obligation~~5,000.00 ofReserve ~~the~~Fund ~~registrant~~100.00 ~~under~~0.00 ~~any of the following provisions (see General Instruction A~~0.2.00 ~~below):~~100.00

~~[_]~~LOAN ~~Written~~STATUS ~~communications~~STRATIFICATION/CREDIT ~~pursuant~~ENHANCEMENT toSTATEMENT ~~Rule~~DELINQUENT ~~425~~BANKRUPTCY ~~under~~FORECLOSURE ~~the~~REO ~~Securities~~Total ~~Act~~No ~~(17~~of ~~CFR~~Loans ~~230~~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 0 0 0 0.~~425)~~00 0.00 0.00 0.00 30 Days 19 0 0 0 19 3,567,769.38 0.00 0.00 0.00 3,567,769.38 60 Days 2 0 0 0 2 209,697.33 0.00 0.00 0.00 209,697.33 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 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 21 0 0 0 21 3,777,466.71 0.00 0.00 0.00 3,777,466.71 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 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 2.069717% 0.000000% 0.000000% 0.000000% 2.069717% 1.854399% 0.000000% 0.000000% 0.000000% 1.854399% 60 Days 0.217865% 0.000000% 0.000000% 0.000000% 0.217865% 0.108993% 0.000000% 0.000000% 0.000000% 0.108993% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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 2.287582% 0.000000% 0.000000% 0.000000% 2.287582% 1.963393% 0.000000% 0.000000% 0.000000% 1.963393%

~~[_]~~OTHER ~~Soliciting~~INFORMATION ~~material~~Current ~~pursuant~~Period toClass ~~Rule~~A ~~14a-12(b)~~Insufficient ~~under~~Funds ~~the~~0.00 ~~Exchange~~Principal ~~Act~~Balance ~~(17~~of ~~CFR~~Contaminated ~~240~~Properties 0.~~14a-12(b))~~00 Periodic Advance 0.00

~~[_]~~SUBORDINATION ~~Pre~~LEVEL/CREDIT ENHANCEMENT/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class M-~~commencement~~1 ~~communications~~31,570,100.00 ~~pursuant~~16.29945551% to32,702,729.32 ~~Rule~~17.00361389% ~~14d~~5.499814% 0.000000% Class M-2~~(b)~~ ~~under~~21,111,100.00 ~~the~~10.89953580% ~~Exchange~~22,317,669.99 ~~Act~~11.60395635% (5.399658% 0.000000% Class M-3 16,269,100.00 8.39963990% 17,509,900.87 ~~CFR~~9.10418182% ~~240~~2.~~14d~~499775% 0.000000% Class B-1 11,814,100.00 6.09954981% 13,086,395.82 6.80420339% 2~~(b))~~.299978% 0.000000% Class B-2 7,553,100.00 3.89962076% 8,855,519.27 4.60438115% 2.199822% 0.000000% Class B-3 4,261,100.00 2.19998067% 5,586,792.31 2.90482358% 1.699558% 0.000000% Class B-4 100.00 0.00005163% 1,355,915.76 0.70500134% 2.199822% 0.000000% Class C 100.00 0.00005163% 100.00 0.00005199% 0.704949% 0.000000% Class P 0.00 0.00000000% 0.00 0.00000000% 0.000052% 0.000000% Class R-I 0.00 0.00000000% 0.00 0.00000000% 0.000000% 0.000000% Class R-II 0.00 0.00000000% 0.00 0.00000000% 0.000000% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

REO Detail - All Mortgage Loans in REO during Current Period

~~[_]~~Summary ~~Pre~~12 Month REO History* New REO Loans Month REO Percentage Loans in REO 0 Aug-~~commencement~~04 ~~communications~~0.000% ~~pursuant~~Original toPrincipal ~~Rule~~Balance ~~13e~~0.00 Sep-~~4(c)~~04 ~~under~~0.000% ~~the~~Current ~~Exchange~~Principal ~~Act~~Balance ~~(17~~0.00 ~~CFR~~Oct-04 ~~240~~0.~~13e~~000% Nov-~~4(c))~~04 0.000% Current REO Total Dec-04 0.000% Loans in REO 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com.

~~Item~~REO ~~9.01. Financial~~Loan ~~Statements,~~Detail ~~Pro~~- ~~Forma~~All ~~Financial~~Mortgage ~~Information~~Loans ~~and~~in ~~Exhibits~~REO during Current Period Month Loan First Original Loan Entered Payment LTV at Principal Group Number REO Date State Origination Balance No REO loans this period.

~~(a)~~REO ~~Not~~Loan ~~applicable~~Detail ~~(b)~~- ~~Not~~All ~~applicable~~Mortgage Loans in REO during Current Period (ccontinued) ~~Exhibits:~~Current Paid Current Approximate Loan Principal To Months Loan Delinquent Group Number Balance Date Delinquent Rate Interest No REO loans this period.

Foreclosure Detail - All Mortgage Loans in Foreclosure during Current Period

25Summary 12 Month Foreclosure History* New Foreclosure Loans Month Foreclosure Percentage Loans in Foreclosure 0 Aug-04 0.1000% ~~Statement~~Original ofPrincipal ~~Eligibility~~Balance of0.00 USep-04 0.S000% Current Principal Balance 0.00 ~~Bank~~Oct-04 ~~National~~0.000% ~~Association~~Nov-04 on0.000% ~~Form~~Current TForeclosure Total Dec-104 ~~under~~0.000% Loans in Foreclosure 0 Jan-05 0.000% Original Principal Balance 0.00 Feb-05 0.000% Current Principal Balance 0.00 Mar-05 0.000% Apr-05 0.000% May-05 0.000% Jun-05 0.000% Jul-05 0.000% *The text reported in the ~~Trust~~above ~~Indenture~~table ~~Act~~is ofpresented ~~1939~~graphically ofon athe ~~corporation~~monthly ~~designated~~bond toremittance ~~act~~report. asThe ~~Trustee~~monthly bond remittance report can be viewed online at www.ctslink.com.

~~SIGNATURE~~Foreclosure Loan Detail - All Mortgage Loans in Foreclosure during Current Period Month Loan First Original Loan Entered Payment LTV at Principal Group Number FC Date State Origination Balance No Foreclosure loans this period.

~~Pursuant~~Foreclosure toLoan ~~the~~Detail ~~requirements~~- ofAll ~~the~~Mortgage ~~Securities~~Loans ~~Exchange~~in ~~Act~~Foreclosure ofduring ~~1934,~~Current ~~the~~Period ~~registrant~~(continued) ~~has~~Current ~~duly~~Paid ~~caused~~Current ~~this~~Approximate ~~report~~Loan toPrincipal beTo ~~signed~~Months onLoan ~~its~~Delinquent ~~behalf~~Group byNumber ~~the~~Balance ~~undersigned~~Date ~~hereunto~~Delinquent ~~duly~~Rate ~~authorized~~Interest No Foreclosure loans this period.

~~STRUCTURED~~COLLATERAL ~~ASSET~~STATEMENT ~~MORTGAGE~~Collateral ~~INVESTMENTS~~Description IIMixed ~~INC~~Fixed Weighted Average Gross Coupon 6.612004% ~~By:~~Weighted Average Net Coupon 6.325937% Weighted Average Pass-Through Rate 6.343438% Weighted Average Maturity(Stepdown Calculation) 358 Beginning Scheduled Collateral Loan Count 922 Number Of Loans Paid In Full 4 Ending Scheduled Collateral Loan Count 918 Beginning Scheduled Collateral Balance 193,688,065.10 Ending Scheduled Collateral Balance 192,328,110.52 Ending Actual Collateral Balance at 30-Jun-2005 192,394,881.38 Monthly P&I Constant 1,154,956.84 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Scheduled Principal 87,735.51 Unscheduled Principal 1,272,118.98 Required Overcollateralization Amount 0.00 Overcollateralized Increase Amount 0.00 Overcollateralized reduction Amount 149.25 Specified O/s/C ~~Baron~~Amount ~~Silverstein~~1,355,815.76 ~~Name:~~Overcollateralized ~~Baron~~Amount ~~Silverstein~~1,355,815.76 ~~Title:~~Overcollateralized ~~Vice~~Deficiency ~~President~~Amount 0.00 Base Overcollateralized Amount 0.00 Extra principal distribution Amount 0.00 Excess Cash Amount 156,244.08

~~Dated:~~Miscellaneous ~~July~~Reporting 223 Month Rolling Average Delinquency 0.001090% Group 1 Extra Prin Distribution 156,393.33 ~~2005~~Overcollateralization Amount 1,355,815.76 Yeild Maintenance 0.00

~~Index~~Prepayment toDetail ~~Exhibits~~- Prepayments during Current Period Summary Loans Paid In Full Repurchased Loans Original Current Original Current Principal Principal Principal Principal Group Count Balance Balance Count Balance Balance Total 4 976,190.00 976,130.25 0 0.00 0.00

Exhibit Number	Description
25.1	Statement of Eligibility of U.S. Bank National Association on Form T-1 under the Trust Indenture Act of 1939 of a corporation designated to act as Trustee.

Prepayment - Voluntary Prepayments

Realized Loss Report - Collateral Summary

Filing Compare · BEAR STEARNS ASSET BACKED SECURITIES I TRUST 2005-AC4