8-K 1 sai03b10.txt OCTOBER 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): October 27, 2003 STRUCTURED ASSET INVESTMENT LOAN TRUST Mortgage Pass-Through Certificates, Series 2003-B10 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-106925-06 54-2126402 Pooling and Servicing Agreement) (Commission 54-2126403 (State or other File Number) 54-2126404 jurisdiction 54-2126405 of Incorporation) IRS EIN 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 October 27, 2003 a distribution was made to holders of STRUCTURED ASSET INVESTMENT LOAN TRUST, Mortgage Pass-Through Certificates, Series 2003-B10 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 Mortgage Pass-Through Certificates, Series 2003-B10 Trust, relating to the October 27, 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. STRUCTURED ASSET INVESTMENT LOAN TRUST Mortgage Pass-Through Certificates, Series 2003-B10 Trust By: Wells Fargo Bank Minnesota, N.A. as Securities Administrator By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 11/7/03 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-B10 Trust, relating to the October 27, 2003 distribution. EX-99.1

~~UNITED~~Structured ~~STATES~~Asset Investment Loan Trust Mortgage Pass-Through Certificates Record Date: 9/30/03 Distribution Date: 10/27/03 SAIL Series: 2003-B10 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 1A1 86359AZ71 SEN 1.26000% 356,137,000.00 398,873.44 5,199,179.84 1A2 86359AZ89 SEN 2.33300% 256,971,000.00 499,594.45 0.00 2A 86359AZ97 SEN 2.17000% 396,258,000.00 716,566.55 5,005,165.34 3A1 86359A2A0 SEN 1.27000% 135,561,000.00 153,033.31 3,712,371.20 3A2 86359A2B8 SEN 2.35000% 50,000,000.00 97,916.67 0.00 3A3 86359A2C6 SEN 2.26000% 50,000,000.00 94,166.67 0.00 3A4 86359A2D4 SEN 1.32000% 96,171,000.00 112,840.64 1,971,932.73 3A5 86359A2E2 SEN 1.60000% 28,954,000.00 41,179.02 0.00 AIO 86359A2F9 IO 6.00000% 0.00 1,439,635.00 0.00 A4 86359A2G7 SEN 1.62000% 49,587,000.00 71,405.28 0.00 M1 86359A2H5 MEZ 1.87000% 87,978,000.00 146,238.99 0.00 M2 86359A2J1 MEZ 2.97000% 39,990,000.00 105,573.60 0.00 M3 86359A2K8 MEZ 3.32000% 15,996,000.00 47,205.97 0.00 M4 86359A2L6 MEZ 4.12000% 15,996,000.00 58,580.91 0.00 M5 86359A2M4 MEZ 4.12000% 11,997,000.00 43,935.68 0.00 B 86359A2N2 SEN 4.12000% 7,997,000.00 29,286.79 0.00 X SAI03BC9X SEN 0.00000% 411.50 90,278.83 0.00 P SAI03BC9P SEN 0.00000% 100.00 111,341.45 0.00 R SEN 0.00000% 0.00 0.00 0.00 Totals 1,599,593,511.50 4,257,653.25 15,888,649.11

~~SECURITIES~~Certificateholder ~~AND~~Distribution ~~EXCHANGE~~Summary ~~COMMISSION~~(continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1A1 0.00 350,937,820.16 5,598,053.28 0.00 1A2 0.00 256,971,000.00 499,594.45 0.00 2A 0.00 391,252,834.66 5,721,731.89 0.00 3A1 0.00 131,848,628.80 3,865,404.51 0.00 3A2 0.00 50,000,000.00 97,916.67 0.00 3A3 0.00 50,000,000.00 94,166.67 0.00 3A4 0.00 94,199,067.27 2,084,773.37 0.00 3A5 0.00 28,954,000.00 41,179.02 0.00 AIO 0.00 0.00 1,439,635.00 0.00 A4 0.00 49,587,000.00 71,405.28 0.00 M1 0.00 87,978,000.00 146,238.99 0.00 M2 0.00 39,990,000.00 105,573.60 0.00 M3 0.00 15,996,000.00 47,205.97 0.00 M4 0.00 15,996,000.00 58,580.91 0.00 M5 0.00 11,997,000.00 43,935.68 0.00 B 0.00 7,997,000.00 29,286.79 0.00 X 0.00 4,585,571.12 90,278.83 0.00 P 0.00 100.00 111,341.45 0.00 R 0.00 0.00 0.00 0.00 Totals 0.00 1,588,290,022.01 20,146,302.36 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

~~Washington~~Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1A1 356,137,000.00 D356,137,000.C00 0. ~~20549~~00 5,199,179.84 0.00 0.00 1A2 256,971,000.00 256,971,000.00 0.00 0.00 0.00 0.00 2A 396,258,000.00 396,258,000.00 0.00 5,005,165.34 0.00 0.00 3A1 135,561,000.00 135,561,000.00 0.00 3,712,371.20 0.00 0.00 3A2 50,000,000.00 50,000,000.00 0.00 0.00 0.00 0.00 3A3 50,000,000.00 50,000,000.00 0.00 0.00 0.00 0.00 3A4 96,171,000.00 96,171,000.00 0.00 1,971,932.73 0.00 0.00 3A5 28,954,000.00 28,954,000.00 0.00 0.00 0.00 0.00 AIO 0.00 0.00 0.00 0.00 0.00 0.00 A4 49,587,000.00 49,587,000.00 0.00 0.00 0.00 0.00 M1 87,978,000.00 87,978,000.00 0.00 0.00 0.00 0.00 M2 39,990,000.00 39,990,000.00 0.00 0.00 0.00 0.00 M3 15,996,000.00 15,996,000.00 0.00 0.00 0.00 0.00 M4 15,996,000.00 15,996,000.00 0.00 0.00 0.00 0.00 M5 11,997,000.00 11,997,000.00 0.00 0.00 0.00 0.00 B 7,997,000.00 7,997,000.00 0.00 0.00 0.00 0.00 X 411.50 411.50 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 1,599,593,511.50 1,599,593,511.50 0.00 15,888,649.11 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 ~~8-K~~Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1A1 5,199,179.84 350,937,820.16 0.98540118 5,199,179.84 1A2 0.00 256,971,000.00 1.00000000 0.00 2A 5,005,165.34 391,252,834.66 0.98736892 5,005,165.34 3A1 3,712,371.20 131,848,628.80 0.97261475 3,712,371.20 3A2 0.00 50,000,000.00 1.00000000 0.00 3A3 0.00 50,000,000.00 1.00000000 0.00 3A4 1,971,932.73 94,199,067.27 0.97949556 1,971,932.73 3A5 0.00 28,954,000.00 1.00000000 0.00 AIO 0.00 0.00 0.00000000 0.00 A4 0.00 49,587,000.00 1.00000000 0.00 M1 0.00 87,978,000.00 1.00000000 0.00 M2 0.00 39,990,000.00 1.00000000 0.00 M3 0.00 15,996,000.00 1.00000000 0.00 M4 0.00 15,996,000.00 1.00000000 0.00 M5 0.00 11,997,000.00 1.00000000 0.00 B 0.00 7,997,000.00 1.00000000 0.00 X 0.00 4,585,571.12 11,143.55071689 0.00 P 0.00 100.00 1.00000000 0.00 R 0.00 0.00 0.00000000 0.00 Totals 15,888,649.11 1,588,290,022.01 0.99293352 15,888,649.11

~~CURRENT~~Principal ~~REPORT~~Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1A1 356,137,000.00 1000.00000000 0.00000000 14.59881967 0.00000000 1A2 256,971,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 2A 396,258,000.00 1000.00000000 0.00000000 12.63107708 0.00000000 3A1 135,561,000.00 1000.00000000 0.00000000 27.38524502 0.00000000 3A2 50,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 3A3 50,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 3A4 96,171,000.00 1000.00000000 0.00000000 20.50444240 0.00000000 3A5 28,954,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 AIO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A4 49,587,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M1 87,978,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M2 39,990,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M3 15,996,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M4 15,996,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M5 11,997,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B 7,997,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 X 411.50 1000.00000000 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 (2) All classes are per 1,000 denomination.

~~PURSUANT~~Principal TODistribution ~~SECTION~~Factors 13Statement OR(continued) 15Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (d3) OFReduction ~~THE~~Balance Percentage Distribution 1A1 0.00000000 14.59881967 985.40118033 0.98540118 14.59881967 1A2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 2A 0.00000000 12.63107708 987.36892292 0.98736892 12.63107708 3A1 0.00000000 27.38524502 972.61475498 0.97261475 27.38524502 3A2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 3A3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 3A4 0.00000000 20.50444240 979.49555760 0.97949556 20.50444240 3A5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 AIO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 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 M4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 X 0.00000000 0.0000000011,143,550.71688940 11143.55071689 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 (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 ~~AND~~Distribution ~~EXCHANGE~~Statement ~~ACT~~Beginning OFPayment ~~1934~~of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1A1 356,137,000.00 1.26000% 356,137,000.00 398,873.44 0.00 0.00 1A2 256,971,000.00 2.33300% 256,971,000.00 499,594.45 0.00 0.00 2A 396,258,000.00 2.17000% 396,258,000.00 716,566.55 0.00 0.00 3A1 135,561,000.00 1.27000% 135,561,000.00 153,033.31 0.00 0.00 3A2 50,000,000.00 2.35000% 50,000,000.00 97,916.67 0.00 0.00 3A3 50,000,000.00 2.26000% 50,000,000.00 94,166.67 0.00 0.00 3A4 96,171,000.00 1.32000% 96,171,000.00 112,840.64 0.00 0.00 3A5 28,954,000.00 1.60000% 28,954,000.00 41,179.02 0.00 0.00 AIO 0.00 6.00000% 287,927,000.00 1,439,635.00 0.00 0.00 A4 49,587,000.00 1.62000% 49,587,000.00 71,405.28 0.00 0.00 M1 87,978,000.00 1.87000% 87,978,000.00 146,238.99 0.00 0.00 M2 39,990,000.00 2.97000% 39,990,000.00 105,573.60 0.00 0.00 M3 15,996,000.00 3.32000% 15,996,000.00 47,205.97 0.00 0.00 M4 15,996,000.00 4.12000% 15,996,000.00 58,580.91 0.00 0.00 M5 11,997,000.00 4.12000% 11,997,000.00 43,935.68 0.00 0.00 B 7,997,000.00 4.12000% 7,997,000.00 29,286.79 0.00 0.00 X 411.50 0.00000% 411.50 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 1,599,593,511.50 4,056,032.97 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) Distribution Shortfall Balance 1A1 0.00 0.00 398,873.44 0.00 350,937,820.16 1A2 0.00 0.00 499,594.45 0.00 256,971,000.00 2A 0.00 0.00 716,566.55 0.00 391,252,834.66 3A1 0.00 0.00 153,033.31 0.00 131,848,628.80 3A2 0.00 0.00 97,916.67 0.00 50,000,000.00 3A3 0.00 0.00 94,166.67 0.00 50,000,000.00 3A4 0.00 0.00 112,840.64 0.00 94,199,067.27 3A5 0.00 0.00 41,179.02 0.00 28,954,000.00 AIO 0.00 0.00 1,439,635.00 0.00 287,927,000.00 A4 0.00 0.00 71,405.28 0.00 49,587,000.00 M1 0.00 0.00 146,238.99 0.00 87,978,000.00 M2 0.00 0.00 105,573.60 0.00 39,990,000.00 M3 0.00 0.00 47,205.97 0.00 15,996,000.00 M4 0.00 0.00 58,580.91 0.00 15,996,000.00 M5 0.00 0.00 43,935.68 0.00 11,997,000.00 B 0.00 0.00 29,286.79 0.00 7,997,000.00 X 0.00 0.00 90,278.83 0.00 4,585,571.12 P 0.00 0.00 111,341.45 0.00 100.00 R 0.00 0.00 0.00 0.00 0.00 Totals 0.00 0.00 4,257,653.25 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.

~~September~~Interest 26Distribution 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 1A1 356,137,000.00 ~~2003~~1.26000% 1000.00000000 1.12000000 0.00000000 0.00000000 1A2 256,971,000.00 2.33300% 1000.00000000 1.94416666 0.00000000 0.00000000 2A 396,258,000.00 2.17000% 1000.00000000 1.80833333 0.00000000 0.00000000 3A1 135,561,000.00 1.27000% 1000.00000000 1.12888891 0.00000000 0.00000000 3A2 50,000,000.00 2.35000% 1000.00000000 1.95833340 0.00000000 0.00000000 3A3 50,000,000.00 2.26000% 1000.00000000 1.88333340 0.00000000 0.00000000 3A4 96,171,000.00 1.32000% 1000.00000000 1.17333333 0.00000000 0.00000000 3A5 28,954,000.00 1.60000% 1000.00000000 1.42222215 0.00000000 0.00000000 AIO 0.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 A4 49,587,000.00 1.62000% 1000.00000000 1.44000000 0.00000000 0.00000000 M1 87,978,000.00 1.87000% 1000.00000000 1.66222226 0.00000000 0.00000000 M2 39,990,000.00 2.97000% 1000.00000000 2.64000000 0.00000000 0.00000000 M3 15,996,000.00 3.32000% 1000.00000000 2.95111090 0.00000000 0.00000000 M4 15,996,000.00 4.12000% 1000.00000000 3.66222243 0.00000000 0.00000000 M5 11,997,000.00 4.12000% 1000.00000000 3.66222222 0.00000000 0.00000000 B 7,997,000.00 4.12000% 1000.00000000 3.66222208 0.00000000 0.00000000 X 411.50 0.00000% 1000.00000000 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 (5) All classes are per $1,000 denomination.

~~STRUCTURED~~Interest ~~ASSET~~Distribution ~~SECURITIES~~Factors ~~CORPORATION~~Statement (ascontinued) ~~Depositor~~Remaining ~~under~~Ending ~~the~~Non-Supported ~~Trust~~Total ~~Agreement~~Unpaid ~~dated~~Certificate/ asInterest ofRealized ~~September~~Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance 1A1 0.00000000 0.00000000 1.12000000 0.00000000 985.40118033 1A2 0.00000000 0.00000000 1.94416666 0.00000000 1000.00000000 2A 0.00000000 0.00000000 1.80833333 0.00000000 987.36892292 3A1 0.00000000 0.00000000 1.12888891 0.00000000 972.61475498 3A2 0.00000000 0.00000000 1.95833340 0.00000000 1000.00000000 3A3 0.00000000 0.00000000 1.88333340 0.00000000 1000.00000000 3A4 0.00000000 0.00000000 1.17333333 0.00000000 979.49555760 3A5 0.00000000 0.00000000 1.42222215 0.00000000 1000.00000000 AIO 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 A4 0.00000000 0.00000000 1.44000000 0.00000000 1000.00000000 M1 0.00000000 0.00000000 1.66222226 0.00000000 1000.00000000 M2 0.00000000 0.00000000 2.64000000 0.00000000 1000.00000000 M3 0.00000000 0.00000000 2.95111090 0.00000000 1000.00000000 M4 0.00000000 0.00000000 3.66222243 0.00000000 1000.00000000 M5 0.00000000 0.00000000 3.66222222 0.00000000 1000.00000000 B 0.00000000 0.00000000 3.66222208 0.00000000 1000.00000000 X 0.00000000 0.00000000 219389.62332928 0.00000000 11143550.71688940 P 0.00000000 0.00000000 1113414.50000000 0.00000000 1000.00000000 R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (6) Amount Does Not Include Excess Special Hazard, ~~2003~~Bankruptcy,or ~~providing~~Fraud ~~for~~Losses ~~the~~Unless ~~issuance~~Otherwise ofDisclosed. ~~Structured~~Please ~~Asset~~Refer ~~Investment~~to ~~Loan~~the ~~Trust~~Prospectus ~~Mortgage~~Supplement ~~Pass-Through~~for ~~Certificates,~~a ~~Series~~Full ~~2003-BC10)~~Description.

~~Structured~~CERTIFICATEHOLDER ~~Asset~~ACCOUNT ~~Securities~~STATEMENT ~~Corporation~~ CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 21,540,275.30 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) 0.00 Prepayment Penalties 0.00 Total Deposits 21,540,275.30 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 1,484,251.77 Payment of Interest and Principal 20,056,023.53 Total Withdrawals (Pool Distribution Amount) 21,540,275.30 Ending Balance 0.00

~~(Exact~~PREPAYMENT/CURTAILMENT ~~Name~~INTEREST ofSHORTFALL ~~Registrant~~Total asPrepayment/Curtailment ~~Specified~~Interest inShortfall ~~its~~0.00 ~~Charter)~~Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

Delaware	333-106925	74-2440850
(State or Other Jurisdiction Of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

745 Seventh Avenue, 7th Floor New York, New York		10019
(Address of Principal Executive Offices)		(Zip Code)

~~Registrant’s~~LOAN ~~telephone~~STATUS ~~number~~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 2 0 0 2 199,779.43 ~~including~~0.00 ~~area~~0.00 ~~code: (212)~~199,779.43 ~~526~~30 Days 53 0 0 0 53 8,597,826.95 0.00 0.00 0.00 8,597,826.95 60 Days 15 0 0 0 15 2,089,409.89 0.00 0.00 0.00 2,089,409.89 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 68 2 0 0 70 10,687,236.84 199,779.43 0.00 0.00 10,887,016.27 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-~~7000~~29 Days 0.020612% 0.000000% 0.000000% 0.020612% 0.012570% 0.000000% 0.000000% 0.012570% 30 Days 0.546223% 0.000000% 0.000000% 0.000000% 0.546223% 0.540992% 0.000000% 0.000000% 0.000000% 0.540992% 60 Days 0.154591% 0.000000% 0.000000% 0.000000% 0.154591% 0.131470% 0.000000% 0.000000% 0.000000% 0.131470% 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 0.700814% 0.020612% 0.000000% 0.000000% 0.721426% 0.672461% 0.012570% 0.000000% 0.000000% 0.685032%

Delinquency Status By Groups

~~None~~ DELINQUENT BANKRUPTCY FORECLOSURE REO Total 1(A) 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 0 0 0 0.00 0.00 0.00 0.00 30 Days 2 0 0 0 2 260,523.29 0.00 0.00 0.00 260,523.29 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 2 0 0 0 2 260,523.29 0.00 0.00 0.00 260,523.29 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.121139% 0.000000% 0.000000% 0.000000% 0.121139% 0.113895% 0.000000% 0.000000% 0.000000% 0.113895% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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 0.121139% 0.000000% 0.000000% 0.000000% 0.121139% 0.113895% 0.000000% 0.000000% 0.000000% 0.113895% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 1(B) 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 0 0 0 0.00 0.00 0.00 0.00 30 Days 10 0 0 0 10 1,448,333.63 0.00 0.00 0.00 1,448,333.63 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 10 0 0 0 10 1,448,333.63 0.00 0.00 0.00 1,448,333.63 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.328731% 0.000000% 0.000000% 0.000000% 0.328731% 0.298995% 0.000000% 0.000000% 0.000000% 0.298995% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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 0.328731% 0.000000% 0.000000% 0.000000% 0.328731% 0.298995% 0.000000% 0.000000% 0.000000% 0.298995% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 2(A) 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 0 0 0 0.00 0.00 0.00 0.00 30 Days 1 0 0 0 1 28,600.00 0.00 0.00 0.00 28,600.00 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 1 0 0 0 1 28,600.00 0.00 0.00 0.00 28,600.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.145985% 0.000000% 0.000000% 0.000000% 0.145985% 0.042992% 0.000000% 0.000000% 0.000000% 0.042992% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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 0.145985% 0.000000% 0.000000% 0.000000% 0.145985% 0.042992% 0.000000% 0.000000% 0.000000% 0.042992% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 2(B) 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 0 0 0 0.00 0.00 0.00 0.00 30 Days 15 0 0 0 15 1,747,970.36 0.00 0.00 0.00 1,747,970.36 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 15 0 0 0 15 1,747,970.36 0.00 0.00 0.00 1,747,970.36 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.594530% 0.000000% 0.000000% 0.000000% 0.594530% 0.445107% 0.000000% 0.000000% 0.000000% 0.445107% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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 0.594530% 0.000000% 0.000000% 0.000000% 0.594530% 0.445107% 0.000000% 0.000000% 0.000000% 0.445107% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 3(A) 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 2 0 0 2 199,779.43 0.00 0.00 199,779.43 30 Days 13 0 0 0 13 1,893,182.65 0.00 0.00 0.00 1,893,182.65 60 Days 10 0 0 0 10 1,413,886.35 0.00 0.00 0.00 1,413,886.35 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 23 2 0 0 25 3,307,069.00 199,779.43 0.00 0.00 3,506,848.43 0-29 Days 0.236128% 0.000000% 0.000000% 0.236128% 0.135667% 0.000000% 0.000000% 0.135667% 30 Days 1.534829% 0.000000% 0.000000% 0.000000% 1.534829% 1.285630% 0.000000% 0.000000% 0.000000% 1.285630% 60 Days 1.180638% 0.000000% 0.000000% 0.000000% 1.180638% 0.960148% 0.000000% 0.000000% 0.000000% 0.960148% 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 2.715466% 0.236128% 0.000000% 0.000000% 2.951594% 2.245778% 0.135667% 0.000000% 0.000000% 2.381445% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 3(B) 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 0 0 0 0.00 0.00 0.00 0.00 30 Days 12 0 0 0 12 3,219,217.02 0.00 0.00 0.00 3,219,217.02 60 Days 5 0 0 0 5 675,523.54 0.00 0.00 0.00 675,523.54 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 17 0 0 0 17 3,894,740.56 0.00 0.00 0.00 3,894,740.56 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 1.256545% 0.000000% 0.000000% 0.000000% 1.256545% 1.193887% 0.000000% 0.000000% 0.000000% 1.193887% 60 Days 0.523560% 0.000000% 0.000000% 0.000000% 0.523560% 0.250526% 0.000000% 0.000000% 0.000000% 0.250526% 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 1.780105% 0.000000% 0.000000% 0.000000% 1.780105% 1.444414% 0.000000% 0.000000% 0.000000% 1.444414%

~~(Former~~OTHER ~~Name~~INFORMATION orCurrent ~~Former~~Period ~~Address,~~Class ifA ~~Changed~~Insufficient ~~Since~~Funds ~~Last~~0.00 ~~Report)~~Principal Balance of Contaminated Properties 0.00 Periodic Advance 0.00

~~Item~~COLLATERAL 5STATEMENT Collateral Description Mixed Fixed & Arm Weighted Average Gross Coupon 7. ~~Other~~596013% ~~Events~~Weighted Average Net Coupon 7.162954% Weighted Average Pass-Through Rate 6.500354% Weighted Average Maturity(Stepdown Calculation ) 358 Beginning Scheduled Collateral Loan Count 9,758 Number Of Loans Paid In Full 55 Ending Scheduled Collateral Loan Count 9,703 Beginning Scheduled Collateral Balance 1,599,593,511.50 Ending Scheduled Collateral Balance 1,588,290,022.02 Ending Actual Collateral Balance at 30-Sep-2003 1,589,271,952.01 Monthly P &I Constant 11,417,865.96 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 1,588,290,022.02 Scheduled Principal 1,292,421.92 Unscheduled Principal 10,011,067.56

~~The~~Miscellaneous ~~Registrant~~Reporting ~~registered~~Monthly ~~issuances~~Excess ofCash ~~its Structured Asset Investment Loan Trust Mortgage Pass-Through Certificates Series 2003-BC10 on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933~~4, ~~as amended (the “Act”)~~585, ~~by a Registration Statement on Form S-3 (Registration File No~~159.62 ~~333-106925)~~Overcollateralized ~~(the~~Amount ~~“Registration Statement”). Pursuant to the Registration Statement~~4, ~~the Registrant issued $1~~585,~~599,593,000~~671.12 ~~aggregate~~Overcollateralized ~~principal~~Deficency ~~amount of Class 1-A1~~7, ~~Class 1-A2~~411,280.22 ~~Class~~Aggregate ~~2-A,~~Overcollateralization ~~Class~~Release ~~3-A1,~~0.00 ~~Class~~Required ~~3-A2,~~Overcollaterized ~~Class~~Amount ~~3-A3~~11, ~~Class 3-A4~~996, Class 3-A5, Class A-IO, Class A4, Class M1, Class M2, Class M3, Class M4, Class M5 and Class B Certificates of its Structured Asset Investment Loan Trust Mortgage Pass-Through Certificates, Series 2003-BC10 on September 26, 2003951. ~~This~~34 ~~Current~~Cap ~~Report~~Payment ~~on Form 8-K is being filed to satisfy an undertaking~~90, contained in the definitive Prospectus dated August 26, 2003, as supplemented by the Prospectus Supplement dated September 23, 2003 (the “Prospectus Supplement”), to file a copy of the Trust Agreement (as defined below) and other operative agreements executed in connection with the issuance of the Certificates, a form of which was filed as an exhibit to the Registration Statement278.83

~~The~~Group ~~Certificates~~Level ~~were~~Collateral ~~issued~~Statement ~~pursuant~~Group to1(A) a1(B) ~~Trust~~2(A) ~~Agreement~~Collateral ~~(the~~Description ~~“Trust~~Mixed ~~Agreement”),~~Fixed ~~attached~~Fixed ~~hereto~~15/30 as& ~~Exhibit~~ARM ~~4.1,~~Fixed ~~dated~~15/30 as& ofARM ~~September~~Weighted 1,Average ~~2003,~~Coupon ~~among~~Rate ~~Structured~~7.357659 ~~Asset~~7.412198 ~~Securities~~7.956243 ~~Corporation,~~Weighted asAverage ~~depositor,~~Net ~~Aurora~~Rate ~~Loan~~6.973570 ~~Services~~7.019410 ~~Inc~~7.,456243 asWeighted ~~Master~~Average ~~Servicer,~~Maturity ~~The~~353 ~~Murrayhill~~353 ~~Company,~~352 asBeginning ~~Credit~~Loan ~~Risk~~Count ~~Manager~~1,654 ~~Wells~~3,054 ~~Fargo~~693 ~~Bank~~Loans ~~Minnesota,~~Paid ~~National~~In ~~Association,~~Full as3 ~~Securities~~12 ~~Administrator,~~8 ~~and~~Ending ~~LaSalle~~Loan ~~Bank~~Count ~~National~~1,651 ~~Association~~3,042 as685 ~~Trustee. The~~Beginning ~~“Certificates”~~Scheduled ~~consist~~Balance of229,362,068.57 ~~the~~486,467,473.61 ~~following~~67,703,014.42 ~~classes: Class~~Ending ~~1-A1,~~scheduled ~~Class~~Balance ~~1-A2~~228,587,817.71 ~~Class~~484,100,907.07 ~~2-A~~66,478,991.34 ~~Class~~Record ~~3-A1,~~Date ~~Class~~09/30/2003 ~~3-A2,~~09/30/2003 ~~Class~~09/30/2003 ~~3-A3,~~Principal ~~Class~~And ~~3-A4,~~Interest ~~Class~~Constant 1,624,345.45 3~~-A5~~,383,557.64 ~~Class A-IO~~513,236.35 ~~Class~~Scheduled A4Principal 218,038.82 ~~Class~~378,729.86 M164,351.68 ~~Class~~Unscheduled M2Principal 556,212.04 ~~Class~~1,987,836.68 M31,159,671.40 ~~Class~~Scheduled M4Interest 1,406,306.63 ~~Class~~3,004,827.78 M5448,884.67 ~~Class~~Servicing BFees 73,412.95 ~~Class~~159,232.08 P28,209.59 ~~Class~~Master XServicing ~~and~~Fees ~~Class~~0.00 R0. ~~The~~00 ~~Certificates~~0.00 ~~evidence~~Trustee ~~all~~Fee of0.00 ~~the~~0.00 ~~beneficial~~0.00 ~~ownership~~FRY ~~interest~~Amount in0.00 a0.00 ~~trust~~0.00 ~~fund~~Special ~~(the~~Hazard ~~“Trust~~Fee ~~Fund”)~~0.00 ~~that~~0.00 ~~consists~~0.00 ~~primarily~~Other ofFee ~~three~~77,450.96 ~~pools~~305,993.50 ~~of certain conventional~~22,294.92 ~~first~~Pool ~~and~~Insurance ~~second~~Fee ~~lien,~~0.00 ~~fixed~~0.00 ~~and~~0.00 ~~adjustable~~Spread ~~rate,~~Fee ~~fully~~1 ~~amortizing~~0.00 ~~and~~0.00 ~~balloon,~~0.00 ~~residential~~Spread ~~mortgage~~Fee ~~loans~~2 ~~(the~~0.00 ~~“Mortgage~~0.00 ~~Loans”)~~0.00 ~~with~~Spread anFee ~~aggregate~~3 ~~outstanding~~0.00 ~~principal~~0.00 ~~balance~~0.00 ofNet ~~approximately~~Interest $1,~~599~~255,~~593~~442.72 2,~~511~~539,602.20 as398,380.16 ofRealized ~~September~~Loss 1,Amount ~~2003,~~0.00 ~~together~~0.00 ~~with~~0.00 ~~certain~~Cumulative ~~other~~Realized ~~assets~~Loss 0. ~~Capitalized~~00 ~~terms~~0.00 ~~used~~0.00 ~~herein~~Percentage ~~and~~of ~~not~~Cumulative ~~otherwise~~Losses ~~defined~~0.0000 ~~shall~~0.0000 ~~have~~0.0000 ~~the~~Prepayment ~~meanings~~Penalties ~~assigned~~0.00 to0.00 ~~them~~0.00 inSpecial ~~the~~Servicing ~~Trust~~Fee ~~Agreement~~0.00 0.00 0.00 Pass-Through Rate 6.568354 6.264597 7.061077

~~Item~~Group Level Collateral Statement Group 2(B) 3(A) 3(B) Collateral Description Fixed 15/30 & ARM Fixed 15/30 & ARM Fixed 15/30 & ARM Weighted Average Coupon Rate 7. ~~Financial~~781254 ~~Statements;~~8.122298 ~~Pro~~7.475388 ~~Forma~~Weighted ~~Financial~~Average ~~Information~~Net ~~and~~Rate ~~Exhibits~~7.281471 7.672182 7.052042 Weighted Average Maturity 352 354 354 Beginning Loan Count 2,535 864 958 Loans Paid In Full 12 17 3 Ending Loan Count 2,523 847 955 Beginning Scheduled Balance 394,944,652.46 150,465,433.65 270,650,868.79 Ending scheduled Balance 392,488,281.47 147,160,262.53 269,473,761.90 Record Date 09/30/2003 09/30/2003 09/30/2003 Principal And Interest Constant 2,862,337.20 1,135,671.85 1,898,717.47 Scheduled Principal 301,366.80 117,234.23 212,700.53 Unscheduled Principal 2,155,004.19 3,187,936.89 964,406.36 Scheduled Interest 2,560,970.40 1,018,437.62 1,686,016.94 Servicing Fees 164,488.55 56,439.10 95,482.47 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee 0.00 0.00 0.00 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 264,718.45 78,671.95 134,112.33 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 2,131,763.40 883,326.57 1,456,422.14 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 6.477151 7.044753 6.457421

~~(a)~~Group Level Collateral Statement Group Total Collateral Description Mixed Fixed & Arm Weighted Average Coupon Rate 7.596013 Weighted Average Net Rate 7.162954 Weighted Average Maturity 358.00 Record Date 09/30/2003 Principal And Interest Constant 11,417,865.96 Beginning Loan Count 9,758 Loans Paid In Full 55 Ending Loan Count 9,703 Beginning Scheduled Balance 1,599,593,511.50 Ending Scheduled Balance 1,588,290,022.02 Scheduled Principal 1,292,421.92 Unscheduled Principal 10,011,067.56 Scheduled Interest 10,125,444.04 Servicing Fee 577,264.74 Master Servicing Fee 0.00 Trustee Fee 0.00 Fry Amount 0.00 Special Hazard Fee 0.00 Other Fee 883,242.11 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 8,664,937.19 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalties 0.00 Special Servicing Fee 0.00 Pass-Through Rate 6.500354

Not applicable.

(b)

Not applicable.

(c)

Exhibits:

4.1

Trust Agreement dated as of September 1, 2003, among Structured Asset Securities Corporation, as Depositor, Aurora Loan Services Inc., as Master Servicer, The Murrayhill Company, as Credit Risk Manager, Wells Fargo Bank Minnesota, National Association, as Securities Administrator, and LaSalle Bank National Association, as Trustee.

99.1

Mortgage Loan Sale and Assignment Agreement dated as of September 1, 2003, between Lehman Brothers Holdings Inc., as Seller, and Structured Asset Securities Corporation, as Purchaser.

99.2

Securitization Servicing Agreement dated as of September 1, 2003, by and among Lehman Brothers Holdings Inc., as Seller, Aurora Loan Services Inc., as Master Servicer, and Ocwen Federal Bank FSB, as Servicer and Sub-Servicing Side Letter Agreement dated as of September 1, 2003 between Lehman Brothers Holdings Inc. and Ocwen Federal Bank FSB.

99.3

Sub-Servicing Agreement dated as of September 1, 2003, among Lehman Brothers Holdings Inc., as Seller, Aurora Loan Services Inc., as Master Servicer, and Option One Mortgage Corporation, as Servicer.

99.4

Securitization Servicing Agreement dated as of September 1, 2003, among Lehman Brothers Holdings Inc., as Seller, Aurora Loan Services Inc., as Master Servicer, and Option One Mortgage Corporation, as Servicer.

99.5

Mortgage Guaranty Insurance Corporation (“MGIC”) Master Policy (No. 12-670-4-3409), including Terms and Conditions No. 71-7135 and Endorsements No. 71-70192 and 71-70201 and the MGIC Commitment Certificates covering approximately $496.0 million aggregate principal balance of insurable Mortgage Loans.

99.6

Insurance Agreement dated as of September 1, 2003, among Lehman Brothers Holdings Inc., as Seller, Structured Asset Securities Corporation, as Depositor, MBIA Insurance Corporation, as Certificate Insurer and LaSalle Bank National Association, as Trustee.

99.7

Certificate Guaranty Insurance Policy No. 42477 for $50,000,000 Class 3-A3 Certificates.

SIGNATURES

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.

STRUCTURED ASSET SECURITIES

CORPORATION

By: /s/ Ellen V. Kiernan

Name: Ellen V. Kiernan

Title: Senior Vice President

Dated: September 26, 2003

EXHIBIT INDEX

Exhibit No.

Description

4.1

Filing Compare · STRUCTURED ASSET SEC CORP MORT PAS THR CERTS SER 2003 BC10