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): August 25, 2004 BEAR STEARNS ASSET BACKED SECURITIES TRUST Asset Backed Certificates, Series 2003-AC7 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-91334-17 54-2139189 Pooling and Servicing Agreement) (Commission 54-2139190 (State or other File Number) 54-2139191 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 August 25, 2004 a distribution was made to holders of BEAR STEARNS ASSET BACKED SECURITIES TRUST, Asset Backed Certificates, Series 2003-AC7 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 2003-AC7 Trust, relating to the August 25, 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 TRUST Asset Backed Certificates, Series 2003-AC7 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: 8/26/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Asset Backed Certificates, Series 2003-AC7 Trust, relating to the August 25, 2004 distribution. EX-99.1 Bear Stearns Asset Backed Securities Asset Backed Certificates Record Date: 7/31/2004 Distribution Date: 8/25/2004 BSA Series: 2003-AC7 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 <s> <c> <c> <c> <c> <c> <c> A-1 07384YPH3 SEN 5.00000% 194,054,369.09 808,559.87 6,789,159.67 A-2 07384YPJ9 SEN 5.25000% 211,959,635.07 927,323.40 7,415,590.86 A-3 07384YPK6 SEN 2.13000% 75,008,546.66 133,140.17 2,624,238.77 A-4 07384YPL4 SEN 5.37000% 0.00 335,663.25 0.00 M-1 07384YPN0 MEZ 5.20000% 34,358,753.63 148,887.93 1,202,070.66 M-2 07384YPP5 MEZ 3.05000% 34,358,753.63 87,328.50 1,202,070.66 B 07384YPQ3 SUB 3.95000% 23,057,636.92 75,898.05 806,691.34 C 07383GCX2 OC 0.00000% 3,814,849.11 0.00 0.00 P 07383GCW4 P 0.00000% 100.00 39,426.51 0.00 R-1 07383GCY0 RES 0.00000% 0.00 0.00 0.00 R-2 07383GCZ7 RES 0.00000% 0.00 0.00 0.00 R-3 07383GDA1 RES 0.00000% 0.00 0.00 0.00 Totals 576,612,644.11 2,556,227.68 20,039,821.96 Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses <s> <c> <c> <c> <c> A-1 0.00 187,265,209.42 7,597,719.54 0.00 A-2 0.00 204,544,044.21 8,342,914.26 0.00 A-3 0.00 72,384,307.88 2,757,378.94 0.00 A-4 0.00 0.00 335,663.25 0.00 M-1 0.00 33,156,682.97 1,350,958.59 0.00 M-2 0.00 33,156,682.97 1,289,399.16 0.00 B 0.00 22,250,945.58 882,589.39 0.00 C 0.00 4,351,237.56 0.00 0.00 P 0.00 100.00 39,426.51 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 0.00 557,109,210.59 22,596,049.64 0.00 <FN> All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee. </FN> Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) <s> <c> <c> <c> <c> <c> <c> A-1 240,600,000.00 194,054,369.09 0.00 6,789,159.67 0.00 0.00 A-2 262,800,000.00 211,959,635.07 0.00 7,415,590.86 0.00 0.00 A-3 93,000,000.00 75,008,546.66 0.00 2,624,238.77 0.00 0.00 A-4 0.00 0.00 0.00 0.00 0.00 0.00 M-1 42,600,000.00 34,358,753.63 0.00 1,202,070.66 0.00 0.00 M-2 42,600,000.00 34,358,753.63 0.00 1,202,070.66 0.00 0.00 B 28,588,212.00 23,057,636.92 0.00 806,691.34 0.00 0.00 C 0.24 3,814,849.11 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 710,188,312.24 576,612,644.11 0.00 20,039,821.96 0.00 0.00 <FN> (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. </FN> Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution <s> <c> <c> <c> <c> A-1 6,789,159.67 187,265,209.42 0.77832589 6,789,159.67 A-2 7,415,590.86 204,544,044.21 0.77832589 7,415,590.86 A-3 2,624,238.77 72,384,307.88 0.77832589 2,624,238.77 A-4 0.00 0.00 0.00000000 0.00 M-1 1,202,070.66 33,156,682.97 0.77832589 1,202,070.66 M-2 1,202,070.66 33,156,682.97 0.77832589 1,202,070.66 B 806,691.34 22,250,945.58 0.77832589 806,691.34 C 0.00 4,351,237.51 30,156.50000000 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 20,039,821.96 557,109,210.59 0.78445280 20,039,821.96 Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion <s> <c> <c> <c> <c> <c> A-1 240,600,000.00 806.54351243 0.00000000 28.21762124 0.00000000 A-2 262,800,000.00 806.54351244 0.00000000 28.21762123 0.00000000 A-3 93,000,000.00 806.54351247 0.00000000 28.21762118 0.00000000 A-4 0.00 0.00000000 0.00000000 0.00000000 0.00000000 M-1 42,600,000.00 806.54351244 0.00000000 28.21762113 0.00000000 M-2 42,600,000.00 806.54351244 0.00000000 28.21762113 0.00000000 B 28,588,212.00 806.54351241 0.00000000 28.21762130 0.00000000 C 0.24 895204625.00000000 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 R-3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 <FN> (2) All Classes are per $1,000 denomination. </FN> Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution <s> <c> <c> <c> <c> <c> A-1 0.00000000 28.21762124 778.32589119 0.77832589 28.21762124 A-2 0.00000000 28.21762123 778.32589121 0.77832589 28.21762123 A-3 0.00000000 28.21762118 778.32589118 0.77832589 28.21762118 A-4 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 M-1 0.00000000 28.21762113 778.32589131 0.77832589 28.21762113 M-2 0.00000000 28.21762113 778.32589131 0.77832589 28.21762113 B 0.00000000 28.21762130 778.32589111 0.77832589 28.21762130 C 0.00000000 0.00000000 18130,156,500.00000000 18130156.50000000 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 <FN> (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. </FN> 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 <s> <c> <c> <c> <c> <c> <c> A-1 240,600,000.00 5.00000% 194,054,369.09 808,559.87 0.00 0.00 A-2 262,800,000.00 5.25000% 211,959,635.07 927,323.40 0.00 0.00 A-3 93,000,000.00 2.13000% 75,008,546.66 133,140.17 0.00 0.00 A-4 0.00 5.37000% 75,008,546.66 335,663.25 0.00 0.00 M-1 42,600,000.00 5.20000% 34,358,753.63 148,887.93 0.00 0.00 M-2 42,600,000.00 3.05000% 34,358,753.63 87,328.50 0.00 0.00 B 28,588,212.00 3.95000% 23,057,636.92 75,898.05 0.00 0.00 C 0.24 0.00000% 3,814,849.11 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 710,188,312.24 2,516,801.17 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 <s> <c> <c> <c> <c> <c> A-1 0.00 0.00 808,559.87 0.00 187,265,209.42 A-2 0.00 0.00 927,323.40 0.00 204,544,044.21 A-3 0.00 0.00 133,140.17 0.00 72,384,307.88 A-4 0.00 0.00 335,663.25 0.00 72,384,307.88 M-1 0.00 0.00 148,887.93 0.00 33,156,682.97 M-2 0.00 0.00 87,328.50 0.00 33,156,682.97 B 0.00 0.00 75,898.05 0.00 22,250,945.58 C 0.00 0.00 0.00 0.00 4,351,237.56 P 0.00 0.00 39,426.51 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 2,556,227.68 0.00 <FN> (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. </FN> 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 <s> <c> <c> <c> <c> <c> <c> A-1 240,600,000.00 5.00000% 806.54351243 3.36059796 0.00000000 0.00000000 A-2 262,800,000.00 5.25000% 806.54351244 3.52862785 0.00000000 0.00000000 A-3 93,000,000.00 2.13000% 806.54351247 1.43161473 0.00000000 0.00000000 A-4 0.00 5.37000% 806.54351247 3.60928226 0.00000000 0.00000000 M-1 42,600,000.00 5.20000% 806.54351244 3.49502183 0.00000000 0.00000000 M-2 42,600,000.00 3.05000% 806.54351244 2.04996479 0.00000000 0.00000000 B 28,588,212.00 3.95000% 806.54351241 2.65487222 0.00000000 0.00000000 C 0.24 0.00000% 895204625.00000000 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 R-3 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 <FN> (5) All Classes are per $1,000 denomination. </FN> Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance <s> <c> <c> <c> <c> <c> A-1 0.00000000 0.00000000 3.36059796 0.00000000 778.32589119 A-2 0.00000000 0.00000000 3.52862785 0.00000000 778.32589121 A-3 0.00000000 0.00000000 1.43161473 0.00000000 778.32589118 A-4 0.00000000 0.00000000 3.60928226 0.00000000 778.32589118 M-1 0.00000000 0.00000000 3.49502183 0.00000000 778.32589131 M-2 0.00000000 0.00000000 2.04996479 0.00000000 778.32589131 B 0.00000000 0.00000000 2.65487222 0.00000000 778.32589111 C 0.00000000 0.00000000 0.00000000 0.00000000 8130156500.00000000 P 0.00000000 0.00000000 394265.10000000 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 <FN> (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. </FN> CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT <s> <c> Beginning Balance 0.00 Deposits Payments of Interest and Principal 22,713,609.39 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 57,639.16 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 22,771,248.55 Withdrawals Reimbursement for Servicer Advances 49,974.16 Payment of Service Fee 125,224.75 Payment of Interest and Principal 22,596,049.64 Total Withdrawals (Pool Distribution Amount) 22,771,248.55 Ending Balance 0.00 PREPAYMENT/CURTAILMENT INTEREST SHORTFALL <s> <c> Total Prepayment/Curtailment Interest Shortfall 0.00 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00 SERVICING FEES <s> <c> Gross Servicing Fee 120,127.62 Back-up Servicing Fee 5,097.13 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 125,224.75 OTHER ACCOUNTS Beginning Current Current Ending Account Type Balance Withdrawals Deposits Balance <s> <c> <c> <c> <c> Net WAC Reserve Fund 5,000.00 0.00 0.00 5,000.00 Class P Certificate Account 100.00 0.00 0.00 100.00 LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total <s> <c> <c> <c> <c> <c> 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 5 0 0 5 904,488.68 0.00 0.00 904,488.68 30 Days 16 2 0 0 18 2,584,440.40 251,179.93 0.00 0.00 2,835,620.33 60 Days 8 1 0 0 9 2,080,265.79 125,891.45 0.00 0.00 2,206,157.24 90 Days 5 1 2 0 8 1,197,142.67 67,612.50 150,481.45 0.00 1,415,236.62 120 Days 5 0 1 0 6 1,193,464.87 0.00 170,104.14 0.00 1,363,569.01 150 Days 0 1 1 0 2 0.00 76,351.28 125,981.67 0.00 202,332.95 180+ Days 2 0 0 0 2 491,986.26 0.00 0.00 0.00 491,986.26 Totals 36 10 4 0 50 7,547,299.99 1,425,523.84 446,567.26 0.00 9,419,391.09 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 0.182017% 0.000000% 0.000000% 0.182017% 0.162190% 0.000000% 0.000000% 0.162190% 30 Days 0.582454% 0.072807% 0.000000% 0.000000% 0.655260% 0.463432% 0.045041% 0.000000% 0.000000% 0.508473% 60 Days 0.291227% 0.036403% 0.000000% 0.000000% 0.327630% 0.373025% 0.022574% 0.000000% 0.000000% 0.395600% 90 Days 0.182017% 0.036403% 0.072807% 0.000000% 0.291227% 0.214667% 0.012124% 0.026984% 0.000000% 0.253775% 120 Days 0.182017% 0.000000% 0.036403% 0.000000% 0.218420% 0.214008% 0.000000% 0.030502% 0.000000% 0.244510% 150 Days 0.000000% 0.036403% 0.036403% 0.000000% 0.072807% 0.000000% 0.013691% 0.022591% 0.000000% 0.036282% 180+ Days 0.072807% 0.000000% 0.000000% 0.000000% 0.072807% 0.088221% 0.000000% 0.000000% 0.000000% 0.088221% Totals 1.310521% 0.364033% 0.145613% 0.000000% 1.820167% 1.353354% 0.255620% 0.080077% 0.000000% 1.689050% OTHER INFORMATION <s> <c> Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 57,639.16 COLLATERAL STATEMENT Collateral Description Fixed 30 Year Weighted Average Gross Coupon 6.614662% Weighted Average Net Coupon 6.364662% Weighted Average Pass-Through Rate 6.364662% Weighted Average Maturity(Stepdown Calculation ) 332 Beginning Scheduled Collateral Loan Count 2,821 Number Of Loans Paid In Full 74 Ending Scheduled Collateral Loan Count 2,747 Beginning Scheduled Collateral Balance 576,612,544.11 Ending Scheduled Collateral Balance 557,109,110.59 Ending Actual Collateral Balance at 31-Jul-2004 557,673,954.34 Monthly P &I Constant 3,838,384.18 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Ending Scheduled Balance for Premium Loans 557,109,110.59 Scheduled Principal 659,969.80 Unscheduled Principal 18,843,463.72 Required Overcollateralization Amount 0.00 Overcollateralized Increase Amount 536,388.45 Overcollateralized reduction Amount 0.00 Specified O/C Amount 4,971,317.00 Overcollateralized Amount 4,351,237.56 Overcollateralized Deficiency Amount 620,079.44 Base Overcollateralized Amount 0.00 Extra principal distribution Amount 536,388.45 Excess Cash Amount 580,912.09 Miscellaneous Reporting 3 Month Rolling Dlq Average Percentage 0.007600%