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 27, 2004 AEGIS ASSET BACKED SECURITIES TRUST Mortgage Pass-Through Certificates, Series 2004-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-110187-01 54-2142310 Pooling and Servicing Agreement) (Commission 54-2142311 (State or other File Number) IRS EIN jurisdiction 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 December 27, 2004 a distribution was made to holders of AEGIS ASSET BACKED SECURITIES TRUST, Mortgage Pass-Through Certificates, Series 2004-1 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2004-1 Trust, relating to the December 27, 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. AEGIS ASSET BACKED SECURITIES TRUST Mortgage Pass-Through Certificates, Series 2004-1 Trust (Registrant) By: Wells Fargo Bank, N.A. as Trustee By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 1/5/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2004-1 Trust, relating to the December 27, 2004 distribution. EX-99.1 AEGIS Asset Backed Securities Trust Mortgage Pass-Through Certificates Record Date: 11/30/2004 Distribution Date: 12/27/2004 AEGIS Asset Backed Securities Trust Mortgage Pass-Through Certificates Series 2004-1 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 00764MBC0 SEN 2.53000% 272,200,850.67 593,019.82 23,782,505.03 M1 00764MBD8 MEZ 2.86000% 35,000,000.00 86,197.22 0.00 M2 00764MBE6 MEZ 3.53000% 28,750,000.00 87,392.02 0.00 M3 00764MBF3 MEZ 3.73000% 7,500,000.00 24,089.58 0.00 B1 00764MBG1 SUB 4.03000% 8,750,000.00 30,364.93 0.00 B2 00764MBH9 SUB 4.18000% 7,500,000.00 26,995.83 0.00 B3 00764MBJ5 SUB 6.18000% 7,500,000.00 39,912.50 0.00 X AEG04001X SEN 0.00000% 12,500,315.16 1,384,006.20 0.00 P AEG04001P SEN 0.00000% 100.00 269,347.73 0.00 R AEG0401R1 SEN 0.00000% 0.00 0.00 0.00 Totals 379,701,265.83 2,541,325.83 23,782,505.03 Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses <s> <c> <c> <c> <c> A 0.00 248,418,345.64 24,375,524.85 0.00 M1 0.00 35,000,000.00 86,197.22 0.00 M2 0.00 28,750,000.00 87,392.02 0.00 M3 0.00 7,500,000.00 24,089.58 0.00 B1 0.00 8,750,000.00 30,364.93 0.00 B2 0.00 7,500,000.00 26,995.83 0.00 B3 0.00 7,500,000.00 39,912.50 0.00 X 0.00 12,500,315.16 1,384,006.20 0.00 P 0.00 100.00 269,347.73 0.00 R 0.00 0.00 0.00 0.00 Totals 0.00 355,918,760.80 26,323,830.86 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 392,500,000.00 272,200,850.67 0.00 23,782,505.03 0.00 0.00 M1 35,000,000.00 35,000,000.00 0.00 0.00 0.00 0.00 M2 28,750,000.00 28,750,000.00 0.00 0.00 0.00 0.00 M3 7,500,000.00 7,500,000.00 0.00 0.00 0.00 0.00 B1 8,750,000.00 8,750,000.00 0.00 0.00 0.00 0.00 B2 7,500,000.00 7,500,000.00 0.00 0.00 0.00 0.00 B3 7,500,000.00 7,500,000.00 0.00 0.00 0.00 0.00 X 12,512,506.31 12,500,315.16 0.00 0.00 0.00 0.00 P 100.00 100.00 0.00 0.00 0.00 0.00 R 0.00 0.00 0.00 0.00 0.00 0.00 Totals 500,012,606.31 379,701,265.83 0.00 23,782,505.03 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 23,782,505.03 248,418,345.64 0.63291298 23,782,505.03 M1 0.00 35,000,000.00 1.00000000 0.00 M2 0.00 28,750,000.00 1.00000000 0.00 M3 0.00 7,500,000.00 1.00000000 0.00 B1 0.00 8,750,000.00 1.00000000 0.00 B2 0.00 7,500,000.00 1.00000000 0.00 B3 0.00 7,500,000.00 1.00000000 0.00 X 0.00 12,500,315.16 0.99902568 0.00 P 0.00 100.00 1.00000000 0.00 R 0.00 0.00 0.00000000 0.00 Totals 23,782,505.03 355,918,760.80 0.71181957 23,782,505.03 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 392,500,000.00 693.50535203 0.00000000 60.59236950 0.00000000 M1 35,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M2 28,750,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M3 7,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B1 8,750,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B2 7,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B3 7,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 X 12,512,506.31 999.02568281 0.00000000 0.00000000 0.00000000 P 100.00 1000.00000000 0.00000000 0.00000000 0.00000000 R 0.00 0.00000000 0.00000000 0.00000000 0.00000000 <FN> </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 0.00000000 60.59236950 632.91298252 0.63291298 60.59236950 M1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 X 0.00000000 0.00000000 999.02568281 0.99902568 0.00000000 P 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 R 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 392,500,000.00 2.53000% 272,200,850.67 593,019.80 0.00 0.00 M1 35,000,000.00 2.86000% 35,000,000.00 86,197.22 0.00 0.00 M2 28,750,000.00 3.53000% 28,750,000.00 87,392.01 0.00 0.00 M3 7,500,000.00 3.73000% 7,500,000.00 24,089.58 0.00 0.00 B1 8,750,000.00 4.03000% 8,750,000.00 30,364.93 0.00 0.00 B2 7,500,000.00 4.18000% 7,500,000.00 26,995.83 0.00 0.00 B3 7,500,000.00 6.18000% 7,500,000.00 39,912.50 0.00 0.00 X 12,512,506.31 0.00000% 12,500,315.16 0.00 0.00 0.00 P 100.00 0.00000% 100.00 0.00 0.00 0.00 R 0.00 0.00000% 0.00 0.00 0.00 0.00 Totals 500,012,606.31 887,971.87 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 0.00 0.00 593,019.82 0.00 248,418,345.64 M1 0.00 0.00 86,197.22 0.00 35,000,000.00 M2 0.00 0.00 87,392.02 0.00 28,750,000.00 M3 0.00 0.00 24,089.58 0.00 7,500,000.00 B1 0.00 0.00 30,364.93 0.00 8,750,000.00 B2 0.00 0.00 26,995.83 0.00 7,500,000.00 B3 0.00 0.00 39,912.50 0.00 7,500,000.00 X 0.00 0.00 1,384,006.20 0.00 12,500,315.16 P 0.00 0.00 269,347.73 0.00 100.00 R 0.00 0.00 0.00 0.00 0.00 Totals 0.00 0.00 2,541,325.83 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 392,500,000.00 2.53000% 693.50535203 1.51087847 0.00000000 0.00000000 M1 35,000,000.00 2.86000% 1000.00000000 2.46277771 0.00000000 0.00000000 M2 28,750,000.00 3.53000% 1000.00000000 3.03972209 0.00000000 0.00000000 M3 7,500,000.00 3.73000% 1000.00000000 3.21194400 0.00000000 0.00000000 B1 8,750,000.00 4.03000% 1000.00000000 3.47027771 0.00000000 0.00000000 B2 7,500,000.00 4.18000% 1000.00000000 3.59944400 0.00000000 0.00000000 B3 7,500,000.00 6.18000% 1000.00000000 5.32166667 0.00000000 0.00000000 X 12,512,506.31 0.00000% 999.02568281 0.00000000 0.00000000 0.00000000 P 100.00 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 R 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 <FN> (5) Per $1 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 0.00000000 0.00000000 1.51087852 0.00000000 632.91298252 M1 0.00000000 0.00000000 2.46277771 0.00000000 1000.00000000 M2 0.00000000 0.00000000 3.03972243 0.00000000 1000.00000000 M3 0.00000000 0.00000000 3.21194400 0.00000000 1000.00000000 B1 0.00000000 0.00000000 3.47027771 0.00000000 1000.00000000 B2 0.00000000 0.00000000 3.59944400 0.00000000 1000.00000000 B3 0.00000000 0.00000000 5.32166667 0.00000000 1000.00000000 X 0.00000000 0.00000000 110.60983033 0.00000000 999.02568281 P 0.00000000 0.00000000 2693477.30000000 0.00000000 1000.00000000 R 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 26,227,338.35 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 220,213.54 Realized Loss (Gains, Subsequent Expenses & Recoveries) (23,629.73) Prepayment Penalties 269,347.73 Total Deposits 26,693,269.89 Withdrawals Reimbursement for Servicer Advances 203,367.08 Payment of Service Fee 166,071.95 Payment of Interest and Principal 26,323,830.86 Total Withdrawals (Pool Distribution Amount) 26,693,269.89 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 158,208.77 Credit Risk Manager Fee 4,746.26 Trustee Fee 3,116.92 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 166,071.95 OTHER ACCOUNTS Beginning Current Current Ending Account Type Balance Withdrawals Deposits Balance <s> <c> <c> <c> <c> Reserve Fund 1,000.00 1.18 1.18 1,000.00 Financial Guaranty 0.00 0.00 0.00 0.00 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 15 0 0 15 1,602,102.80 0.00 0.00 1,602,102.80 30 Days 81 2 0 0 83 10,226,254.91 105,983.15 0.00 0.00 10,332,238.06 60 Days 21 3 6 0 30 1,706,868.01 368,643.02 1,032,439.67 0.00 3,107,950.70 90 Days 7 2 18 0 27 502,855.23 110,251.07 2,404,229.45 0.00 3,017,335.75 120 Days 4 3 16 1 24 266,598.81 256,400.27 1,954,980.22 222,333.48 2,700,312.78 150 Days 0 4 13 1 18 0.00 535,089.26 1,913,976.49 48,293.83 2,497,359.58 180+ Days 0 10 32 2 44 0.00 1,727,020.12 5,799,857.76 1,013,666.08 8,540,543.96 Totals 113 39 85 4 241 12,702,576.96 4,705,489.69 13,105,483.59 1,284,293.39 31,797,843.63 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 0.527983% 0.000000% 0.000000% 0.527983% 0.450132% 0.000000% 0.000000% 0.450132% 30 Days 2.851109% 0.070398% 0.000000% 0.000000% 2.921507% 2.873200% 0.029777% 0.000000% 0.000000% 2.902977% 60 Days 0.739176% 0.105597% 0.211193% 0.000000% 1.055966% 0.479567% 0.103575% 0.290077% 0.000000% 0.873219% 90 Days 0.246392% 0.070398% 0.633580% 0.000000% 0.950370% 0.141284% 0.030976% 0.675500% 0.000000% 0.847760% 120 Days 0.140795% 0.105597% 0.563182% 0.035199% 0.844773% 0.074904% 0.072039% 0.549277% 0.062467% 0.758688% 150 Days 0.000000% 0.140795% 0.457585% 0.035199% 0.633580% 0.000000% 0.150340% 0.537757% 0.013569% 0.701666% 180+ Days 0.000000% 0.351989% 1.126364% 0.070398% 1.548750% 0.000000% 0.485229% 1.629546% 0.284803% 2.399577% Totals 3.977473% 1.372756% 2.991904% 0.140795% 8.482929% 3.568955% 1.322069% 3.682157% 0.360839% 8.934020% OTHER INFORMATION <s> <c> Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 220,213.54 COLLATERAL STATEMENT Collateral Description Fixed Mixed & ARM & Balloon Weighted Average Gross Coupon 7.743937% Weighted Average Net Coupon 7.243937% Weighted Average Pass-Through Rate 7.254990% Weighted Average Maturity (Stepdown Calculation) 337 Beginning Scheduled Collateral Loan Count 3,004 Number Of Loans Paid In Full 163 Ending Scheduled Collateral Loan Count 2,841 Beginning Scheduled Collateral Balance 379,701,165.83 Ending Scheduled Collateral Balance 355,918,660.80 Ending Actual Collateral Balance at 30-Nov-2004 355,918,660.80 Monthly P &I Constant 2,803,357.87 Special Servicing Fee 0.00 Prepayment Penalties 269,347.73 Realized Loss Amount 23,629.73 Cumulative Realized Loss 209,793.90 Ending Scheduled Balance for Premium Loans 355,918,660.80 Scheduled Principal 353,039.68 Unscheduled Principal 23,429,465.35 Miscellaneous Reporting LIBOR Index Rate 2.180000% Overcollateralization Deficiency Amount 23,629.74 Overcollateralization Release Amount 0.00 Target Overcollateralization Amount 12,500,315.16