8-K 1 ba745794-8k.txt 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: January 30, 2004 (Date of earliest event reported) Commission File No. 333-105940 Banc of America Mortgage Securities, Inc. -------------------------------------------------------------------------------- Delaware 36-4514369 -------------------------------------------------------------------------------- (State of Incorporation) (I.R.S. Employer Identification No.) 201 North Tryon Street, Charlotte, North Carolina 28255 -------------------------------------------------------------------------------- Address of principal executive offices (Zip Code) (704) 387-2111 -------------------------------------------------------------------------------- Registrant's Telephone Number, including area code -------------------------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report) ITEM 5. Other Events On January 30, 2004, Banc of America Mortgage Securities, Inc. (the "Registrant") amended the Pooling and Servicing Agreement, dated May 22, 2003, among the Registrant, as depositor, Bank of America, N.A., as servicer, and Wells Fargo Bank Minnesota, National Association, as trustee, relating to Banc of America Alternative Loan Trust 2003-4 Mortgage Pass-Through Certificates, Series 2003-4. A copy of the amendment is filed as an exhibit hereto. ITEM 7. Financial Statements and Exhibits (c) Exhibits Item 601(a) of Regulation S-K Exhibit No. Description (EX-4) Amendment No. 1, dated January 30, 2004, to Pooling and Servicing Agreement, dated May 22, 2003, among Banc of America Mortgage Securities, Inc., Bank of America, N.A. and Wells Fargo Bank Minnesota, National Association, as trustee. 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. BANC OF AMERICA MORTGAGE SECURITIES, INC. January 30, 2004 By: /s/ Judy Lowman --------------------------------------- Name: Judy Lowman Title: Vice President INDEX TO EXHIBITS Paper (P) or Exhibit No. Description Electronic (E) ----------- ----------- -------------- (EX-4) Amendment No. 1, dated January E 30, 2004, to Pooling and Servicing Agreement, dated May 22, 2003, among Banc of America Mortgage Securities, Inc., Bank of America, N.A. and Wells Fargo Bank Minnesota, National Association, as trustee.

Banc of America Alternative Loan Trust Mortgage Pass-Through Certificates Record Date: 12/31/03 Distribution Date: 1/26/04 BAA Series: 2003-4 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 1-A1 05948XJK8 SEN 5.50000% 18,378,888.51 84,236.57 136,666.83 1-A2 05948XJL6 SEN 5.00000% 171,236,870.64 713,486.96 1,273,330.58 1-A3 05948XJM4 SEN 1.64125% 34,247,373.39 46,840.42 254,666.11 1-A4 05948XJN2 SEN 6.35875% 0.00 181,475.40 0.00 1-A5 05948XJP7 SEN 5.50000% 2,460,513.26 11,277.35 (11,277.35) 1-A6 05948XJQ5 SEN 5.50000% 29,000,000.00 132,916.67 0.00 A-PO 05948XJW2 PO 0.00000% 1,041,363.80 0.00 10,090.14 1-AR 05948XJT9 SEN 5.50000% 0.00 0.00 0.00 1-ALR 05948XJU6 SEN 5.50000% 0.00 0.02 0.00 1-AWIO 05948XJR3 IO 0.43708% 0.00 89,221.05 0.00 2-A1 05948XJV4 SEN 5.00000% 248,160,000.88 1,034,000.00 2,353,312.18 1-B1 05948XJX0 SUB 5.50000% 6,476,330.28 29,683.18 6,724.38 1-B2 05948XJY8 SUB 5.50000% 2,877,707.01 13,189.49 2,987.93 1-B3 05948XJZ5 SUB 5.50000% 1,438,853.51 6,594.75 1,493.96 1-B4 05948XKE0 SUB 5.50000% 1,439,846.50 6,599.30 1,494.99 1-B5 05948XKF7 SUB 5.50000% 1,006,899.56 4,614.96 1,045.47 1-B6 05948XKG5 SUB 5.50000% 1,151,973.61 5,279.88 1,196.10 2-B1 05948XKA8 SUB 5.00000% 2,564,260.62 10,684.42 10,340.03 2-B2 05948XKB6 SUB 5.00000% 944,932.47 3,937.22 3,810.31 2-B3 05948XKC4 SUB 5.00000% 943,959.32 3,933.16 3,806.39 2-B4 05948XKH3 SUB 5.00000% 540,100.43 2,250.42 2,177.88 2-B5 05948XKJ9 SUB 5.00000% 269,563.64 1,123.18 1,086.98 2-B6 05948XKK6 SUB 5.00000% 405,805.19 1,690.85 1,636.35 2-AWIO 05948XJS1 IO 0.56659% 0.00 107,327.68 0.00 SES 05948XKD2 SEN 0.00000% 0.00 92,295.26 0.00 Totals 524,585,242.62 2,582,658.19 4,054,589.26

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1-A1 0.00 18,242,221.68 220,903.40 0.00 1-A2 0.00 169,963,540.07 1,986,817.54 0.00 1-A3 0.00 33,992,707.28 301,506.53 0.00 1-A4 0.00 0.00 181,475.40 0.00 1-A5 0.00 2,471,790.61 0.00 0.00 1-A6 0.00 29,000,000.00 132,916.67 0.00 A-PO 0.00 1,031,273.66 10,090.14 0.00 1-AR 0.00 0.00 0.00 0.00 1-ALR 0.00 0.00 0.02 0.00 1-AWIO 0.00 0.00 89,221.05 0.00 2-A1 0.00 245,806,688.70 3,387,312.18 0.00 1-B1 0.00 6,469,605.89 36,407.56 0.00 1-B2 0.00 2,874,719.09 16,177.42 0.00 1-B3 0.00 1,437,359.54 8,088.71 0.00 1-B4 0.00 1,438,351.51 8,094.29 0.00 1-B5 0.00 1,005,854.09 5,660.43 0.00 1-B6 0.00 1,150,777.51 6,475.98 0.00 2-B1 0.00 2,553,920.59 21,024.45 0.00 2-B2 0.00 941,122.16 7,747.53 0.00 2-B3 0.00 940,152.93 7,739.55 0.00 2-B4 0.00 537,922.55 4,428.30 0.00 2-B5 0.00 268,476.66 2,210.16 0.00 2-B6 0.00 404,168.84 3,327.20 0.00 2-AWIO 0.00 0.00 107,327.68 0.00 SES 0.00 0.00 92,295.26 0.00 Totals 0.00 520,530,653.36 6,637,247.45 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1-A1 20,000,000.00 18,378,888.51 21,913.07 114,753.76 0.00 0.00 1-A2 186,340,834.00 171,236,870.64 204,164.99 1,069,165.59 0.00 0.00 1-A3 37,268,166.00 34,247,373.39 40,833.00 213,833.11 0.00 0.00 1-A4 0.00 0.00 0.00 0.00 0.00 0.00 1-A5 2,383,000.00 2,460,513.26 0.00 0.00 (11,277.35) 0.00 1-A6 29,000,000.00 29,000,000.00 0.00 0.00 0.00 0.00 A-PO 1,094,946.00 1,041,363.80 3,602.46 6,487.67 0.00 0.00 1-AR 50.00 0.00 0.00 0.00 0.00 0.00 1-ALR 50.00 0.00 0.00 0.00 0.00 0.00 1-AWIO 0.00 0.00 0.00 0.00 0.00 0.00 2-A1 270,784,000.00 248,160,000.88 1,000,670.63 1,352,641.55 0.00 0.00 1-B1 6,522,000.00 6,476,330.28 6,724.38 0.00 0.00 0.00 1-B2 2,898,000.00 2,877,707.01 2,987.93 0.00 0.00 0.00 1-B3 1,449,000.00 1,438,853.51 1,493.96 0.00 0.00 0.00 1-B4 1,450,000.00 1,439,846.50 1,494.99 0.00 0.00 0.00 1-B5 1,014,000.00 1,006,899.56 1,045.47 0.00 0.00 0.00 1-B6 1,160,097.00 1,151,973.61 1,196.10 0.00 0.00 0.00 2-B1 2,635,000.00 2,564,260.62 10,340.03 0.00 0.00 0.00 2-B2 971,000.00 944,932.47 3,810.31 0.00 0.00 0.00 2-B3 970,000.00 943,959.32 3,806.39 0.00 0.00 0.00 2-B4 555,000.00 540,100.43 2,177.88 0.00 0.00 0.00 2-B5 277,000.00 269,563.64 1,086.98 0.00 0.00 0.00 2-B6 417,000.00 405,805.19 1,636.35 0.00 0.00 0.00 2-AWIO 0.00 0.00 0.00 0.00 0.00 0.00 SES 0.00 0.00 0.00 0.00 0.00 0.00 Totals 567,189,143.00 524,585,242.62 1,308,984.92 2,756,881.68 (11,277.35) 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1-A1 136,666.83 18,242,221.68 0.91211108 136,666.83 1-A2 1,273,330.58 169,963,540.07 0.91211108 1,273,330.58 1-A3 254,666.11 33,992,707.28 0.91211108 254,666.11 1-A4 0.00 0.00 0.00000000 0.00 1-A5 (11,277.35) 2,471,790.61 1.03726001 (11,277.35) 1-A6 0.00 29,000,000.00 1.00000000 0.00 A-PO 10,090.14 1,031,273.66 0.94184888 10,090.14 1-AR 0.00 0.00 0.00000000 0.00 1-ALR 0.00 0.00 0.00000000 0.00 1-AWIO 0.00 0.00 0.00000000 0.00 2-A1 2,353,312.18 245,806,688.70 0.90775928 2,353,312.18 1-B1 6,724.38 6,469,605.89 0.99196656 6,724.38 1-B2 2,987.93 2,874,719.09 0.99196656 2,987.93 1-B3 1,493.96 1,437,359.54 0.99196656 1,493.96 1-B4 1,494.99 1,438,351.51 0.99196656 1,494.99 1-B5 1,045.47 1,005,854.09 0.99196656 1,045.47 1-B6 1,196.10 1,150,777.51 0.99196663 1,196.10 2-B1 10,340.03 2,553,920.59 0.96922983 10,340.03 2-B2 3,810.31 941,122.16 0.96922982 3,810.31 2-B3 3,806.39 940,152.93 0.96922982 3,806.39 2-B4 2,177.88 537,922.55 0.96922982 2,177.88 2-B5 1,086.98 268,476.66 0.96922982 1,086.98 2-B6 1,636.35 404,168.84 0.96922983 1,636.35 2-AWIO 0.00 0.00 0.00000000 0.00 SES 0.00 0.00 0.00000000 0.00 Totals 4,054,589.26 520,530,653.36 0.91773734 4,054,589.26

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1-A1 20,000,000.00 918.94442550 1.09565350 5.73768800 0.00000000 1-A2 186,340,834.00 918.94442546 1.09565352 5.73768812 0.00000000 1-A3 37,268,166.00 918.94442538 1.09565359 5.73768803 0.00000000 1-A4 0.00 0.00000000 0.00000000 0.00000000 0.00000000 1-A5 2,383,000.00 1032.52759547 0.00000000 0.00000000 (4.73241712) 1-A6 29,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-PO 1,094,946.00 951.06407074 3.29008006 5.92510498 0.00000000 1-AR 50.00 0.00000000 0.00000000 0.00000000 0.00000000 1-ALR 50.00 0.00000000 0.00000000 0.00000000 0.00000000 1-AWIO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 2-A1 270,784,000.00 916.45001507 3.69545701 4.99527871 0.00000000 1-B1 6,522,000.00 992.99758970 1.03103036 0.00000000 0.00000000 1-B2 2,898,000.00 992.99758799 1.03103175 0.00000000 0.00000000 1-B3 1,449,000.00 992.99759144 1.03102830 0.00000000 0.00000000 1-B4 1,450,000.00 992.99758621 1.03102759 0.00000000 0.00000000 1-B5 1,014,000.00 992.99759369 1.03103550 0.00000000 0.00000000 1-B6 1,160,097.00 992.99766313 1.03103447 0.00000000 0.00000000 2-B1 2,635,000.00 973.15393548 3.92411006 0.00000000 0.00000000 2-B2 971,000.00 973.15393409 3.92410917 0.00000000 0.00000000 2-B3 970,000.00 973.15393814 3.92411340 0.00000000 0.00000000 2-B4 555,000.00 973.15392793 3.92410811 0.00000000 0.00000000 2-B5 277,000.00 973.15393502 3.92411552 0.00000000 0.00000000 2-B6 417,000.00 973.15393285 3.92410072 0.00000000 0.00000000 2-AWIO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 SES 0.00 0.00000000 0.00000000 0.00000000 0.00000000 (2) All classes are per 1,000 denomination

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution 1-A1 0.00000000 6.83334150 912.11108400 0.91211108 6.83334150 1-A2 0.00000000 6.83334164 912.11108388 0.91211108 6.83334164 1-A3 0.00000000 6.83334162 912.11108376 0.91211108 6.83334162 1-A4 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1-A5 0.00000000 (4.73241712) 1,037.26001259 1.03726001 (4.73241712) 1-A6 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-PO 0.00000000 9.21519417 941.84887657 0.94184888 9.21519417 1-AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1-ALR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1-AWIO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2-A1 0.00000000 8.69073572 907.75927935 0.90775928 8.69073572 1-B1 0.00000000 1.03103036 991.96655780 0.99196656 1.03103036 1-B2 0.00000000 1.03103175 991.96655970 0.99196656 1.03103175 1-B3 0.00000000 1.03102830 991.96655625 0.99196656 1.03102830 1-B4 0.00000000 1.03102759 991.96655862 0.99196656 1.03102759 1-B5 0.00000000 1.03103550 991.96655819 0.99196656 1.03103550 1-B6 0.00000000 1.03103447 991.96662865 0.99196663 1.03103447 2-B1 0.00000000 3.92411006 969.22982543 0.96922983 3.92411006 2-B2 0.00000000 3.92410917 969.22982492 0.96922982 3.92410917 2-B3 0.00000000 3.92411340 969.22982474 0.96922982 3.92411340 2-B4 0.00000000 3.92410811 969.22981982 0.96922982 3.92410811 2-B5 0.00000000 3.92411552 969.22981949 0.96922982 3.92411552 2-B6 0.00000000 3.92410072 969.22983213 0.96922983 3.92410072 2-AWIO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 SES 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1-A1 20,000,000.00 5.50000% 18,378,888.51 84,236.57 0.00 0.00 1-A2 186,340,834.00 5.00000% 171,236,870.64 713,486.96 0.00 0.00 1-A3 37,268,166.00 1.64125% 34,247,373.39 46,840.42 0.00 0.00 1-A4 0.00 6.35875% 34,247,373.39 181,475.40 0.00 0.00 1-A5 2,383,000.00 5.50000% 2,460,513.26 11,277.35 0.00 0.00 1-A6 29,000,000.00 5.50000% 29,000,000.00 132,916.67 0.00 0.00 A-PO 1,094,946.00 0.00000% 1,041,363.80 0.00 0.00 0.00 1-AR 50.00 5.50000% 0.00 0.00 0.00 0.00 1-ALR 50.00 5.50000% 0.00 0.00 0.00 0.00 1-AWIO 0.00 0.43708% 244,956,361.98 89,221.05 0.00 0.00 2-A1 270,784,000.00 5.00000% 248,160,000.88 1,034,000.00 0.00 0.00 1-B1 6,522,000.00 5.50000% 6,476,330.28 29,683.18 0.00 0.00 1-B2 2,898,000.00 5.50000% 2,877,707.01 13,189.49 0.00 0.00 1-B3 1,449,000.00 5.50000% 1,438,853.51 6,594.75 0.00 0.00 1-B4 1,450,000.00 5.50000% 1,439,846.50 6,599.30 0.00 0.00 1-B5 1,014,000.00 5.50000% 1,006,899.56 4,614.96 0.00 0.00 1-B6 1,160,097.00 5.50000% 1,151,973.61 5,279.88 0.00 0.00 2-B1 2,635,000.00 5.00000% 2,564,260.62 10,684.42 0.00 0.00 2-B2 971,000.00 5.00000% 944,932.47 3,937.22 0.00 0.00 2-B3 970,000.00 5.00000% 943,959.32 3,933.16 0.00 0.00 2-B4 555,000.00 5.00000% 540,100.43 2,250.42 0.00 0.00 2-B5 277,000.00 5.00000% 269,563.64 1,123.18 0.00 0.00 2-B6 417,000.00 5.00000% 405,805.19 1,690.85 0.00 0.00 2-AWIO 0.00 0.56659% 227,311,166.72 107,327.68 0.00 0.00 SES 0.00 0.00000% 524,585,244.08 0.00 0.00 0.00 Totals 567,189,143.00 2,490,362.91 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 1-A1 0.00 0.00 84,236.57 0.00 18,242,221.68 1-A2 0.00 0.00 713,486.96 0.00 169,963,540.07 1-A3 0.00 0.00 46,840.42 0.00 33,992,707.28 1-A4 0.00 0.00 181,475.40 0.00 33,992,707.28 1-A5 0.00 0.00 11,277.35 0.00 2,471,790.61 1-A6 0.00 0.00 132,916.67 0.00 29,000,000.00 A-PO 0.00 0.00 0.00 0.00 1,031,273.66 1-AR 0.00 0.00 0.00 0.00 0.00 1-ALR 0.00 0.00 0.02 0.00 0.00 1-AWIO 0.00 0.00 89,221.05 0.00 243,322,394.12 2-A1 0.00 0.00 1,034,000.00 0.00 245,806,688.70 1-B1 0.00 0.00 29,683.18 0.00 6,469,605.89 1-B2 0.00 0.00 13,189.49 0.00 2,874,719.09 1-B3 0.00 0.00 6,594.75 0.00 1,437,359.54 1-B4 0.00 0.00 6,599.30 0.00 1,438,351.51 1-B5 0.00 0.00 4,614.96 0.00 1,005,854.09 1-B6 0.00 0.00 5,279.88 0.00 1,150,777.51 2-B1 0.00 0.00 10,684.42 0.00 2,553,920.59 2-B2 0.00 0.00 3,937.22 0.00 941,122.16 2-B3 0.00 0.00 3,933.16 0.00 940,152.93 2-B4 0.00 0.00 2,250.42 0.00 537,922.55 2-B5 0.00 0.00 1,123.18 0.00 268,476.66 2-B6 0.00 0.00 1,690.85 0.00 404,168.84 2-AWIO 0.00 0.00 107,327.68 0.00 225,121,354.47 SES 0.00 0.00 92,295.26 0.00 520,530,654.82 Totals 0.00 0.00 2,582,658.19 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall 1-A1 20,000,000.00 5.50000% 918.94442550 4.21182850 0.00000000 0.00000000 1-A2 186,340,834.00 5.00000% 918.94442546 3.82893510 0.00000000 0.00000000 1-A3 37,268,166.00 1.64125% 918.94442538 1.25684800 0.00000000 0.00000000 1-A4 0.00 6.35875% 918.94442538 4.86944810 0.00000000 0.00000000 1-A5 2,383,000.00 5.50000% 1032.52759547 4.73241712 0.00000000 0.00000000 1-A6 29,000,000.00 5.50000% 1000.00000000 4.58333345 0.00000000 0.00000000 A-PO 1,094,946.00 0.00000% 951.06407074 0.00000000 0.00000000 0.00000000 1-AR 50.00 5.50000% 0.00000000 0.00000000 0.00000000 0.00000000 1-ALR 50.00 5.50000% 0.00000000 0.00000000 0.00000000 0.00000000 1-AWIO 0.00 0.43708% 933.21910822 0.33990866 0.00000000 0.00000000 2-A1 270,784,000.00 5.00000% 916.45001507 3.81854172 0.00000000 0.00000000 1-B1 6,522,000.00 5.50000% 992.99758970 4.55123888 0.00000000 0.00000000 1-B2 2,898,000.00 5.50000% 992.99758799 4.55123879 0.00000000 0.00000000 1-B3 1,449,000.00 5.50000% 992.99759144 4.55124224 0.00000000 0.00000000 1-B4 1,450,000.00 5.50000% 992.99758621 4.55124138 0.00000000 0.00000000 1-B5 1,014,000.00 5.50000% 992.99759369 4.55124260 0.00000000 0.00000000 1-B6 1,160,097.00 5.50000% 992.99766313 4.55124011 0.00000000 0.00000000 2-B1 2,635,000.00 5.00000% 973.15393548 4.05480835 0.00000000 0.00000000 2-B2 971,000.00 5.00000% 973.15393409 4.05480947 0.00000000 0.00000000 2-B3 970,000.00 5.00000% 973.15393814 4.05480412 0.00000000 0.00000000 2-B4 555,000.00 5.00000% 973.15392793 4.05481081 0.00000000 0.00000000 2-B5 277,000.00 5.00000% 973.15393502 4.05480144 0.00000000 0.00000000 2-B6 417,000.00 5.00000% 973.15393285 4.05479616 0.00000000 0.00000000 2-AWIO 0.00 0.56659% 913.72508861 0.43142620 0.00000000 0.00000000 SES 0.00 0.00000% 924.88590381 0.00000000 0.00000000 0.00000000 (5) All classes are per 1,000 denomination

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance 1-A1 0.00000000 0.00000000 4.21182850 0.00000000 912.11108400 1-A2 0.00000000 0.00000000 3.82893510 0.00000000 912.11108388 1-A3 0.00000000 0.00000000 1.25684800 0.00000000 912.11108376 1-A4 0.00000000 0.00000000 4.86944810 0.00000000 912.11108376 1-A5 0.00000000 0.00000000 4.73241712 0.00000000 1037.26001259 1-A6 0.00000000 0.00000000 4.58333345 0.00000000 1000.00000000 A-PO 0.00000000 0.00000000 0.00000000 0.00000000 941.84887657 1-AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1-ALR 0.00000000 0.00000000 0.40000000 0.00000000 0.00000000 1-AWIO 0.00000000 0.00000000 0.33990866 0.00000000 926.99412179 2-A1 0.00000000 0.00000000 3.81854172 0.00000000 907.75927935 1-B1 0.00000000 0.00000000 4.55123888 0.00000000 991.96655780 1-B2 0.00000000 0.00000000 4.55123879 0.00000000 991.96655970 1-B3 0.00000000 0.00000000 4.55124224 0.00000000 991.96655625 1-B4 0.00000000 0.00000000 4.55124138 0.00000000 991.96655862 1-B5 0.00000000 0.00000000 4.55124260 0.00000000 991.96655819 1-B6 0.00000000 0.00000000 4.55124011 0.00000000 991.96662865 2-B1 0.00000000 0.00000000 4.05480835 0.00000000 969.22982543 2-B2 0.00000000 0.00000000 4.05480947 0.00000000 969.22982492 2-B3 0.00000000 0.00000000 4.05480412 0.00000000 969.22982474 2-B4 0.00000000 0.00000000 4.05481081 0.00000000 969.22981982 2-B5 0.00000000 0.00000000 4.05480144 0.00000000 969.22981949 2-B6 0.00000000 0.00000000 4.05479616 0.00000000 969.22983213 2-AWIO 0.00000000 0.00000000 0.43142620 0.00000000 904.92267727 SES 0.00000000 0.00000000 0.16272395 0.00000000 917.73733741 (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 Component Statement Component Beginning Ending Beginning Ending Ending Pass-Through Notional Notional Component Component Component Class Rate Balance Balance Balance Balance Percentage APO_1 0.00000% 0.00 0.00 354,995.56 354,343.12 97.12501096% APO_2 0.00000% 0.00 0.00 686,368.24 676,930.54 92.71573206% SES_1 0.00000% 270,070,253.23 268,401,271.79 0.00 0.00 92.60004968% SES_2 0.00000% 254,514,990.85 252,129,383.03 0.00 0.00 90.91014224%

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 6,660,416.66 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 6,660,416.66 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 23,169.21 Payment of Interest and Principal 6,637,247.45 Total Withdrawals (Pool Distribution Amount) 6,660,416.66 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0.00 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

SERVICING FEES Gross Servicing Fee 21,857.72 Trustee Fee 1,311.49 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 23,169.21

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 30 0 0 0 30 3,816,935.49 0.00 0.00 0.00 3,816,935.49 60 Days 1 0 0 0 1 150,127.38 0.00 0.00 0.00 150,127.38 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 31 0 0 0 31 3,967,062.87 0.00 0.00 0.00 3,967,062.87 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 0.668896% 0.000000% 0.000000% 0.000000% 0.668896% 0.733278% 0.000000% 0.000000% 0.000000% 0.733278% 60 Days 0.022297% 0.000000% 0.000000% 0.000000% 0.022297% 0.028841% 0.000000% 0.000000% 0.000000% 0.028841% 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 0.691193% 0.000000% 0.000000% 0.000000% 0.691193% 0.762119% 0.000000% 0.000000% 0.000000% 0.762119%

DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 1 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 14 0 0 0 14 2,599,449.66 0.00 0.00 0.00 2,599,449.66 60 Days 1 0 0 0 1 150,127.38 0.00 0.00 0.00 150,127.38 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 2,749,577.04 0.00 0.00 0.00 2,749,577.04 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.814427% 0.000000% 0.000000% 0.000000% 0.814427% 0.968494% 0.000000% 0.000000% 0.000000% 0.968494% 60 Days 0.058173% 0.000000% 0.000000% 0.000000% 0.058173% 0.055934% 0.000000% 0.000000% 0.000000% 0.055934% 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 0.872600% 0.000000% 0.000000% 0.000000% 0.872600% 1.024428% 0.000000% 0.000000% 0.000000% 1.024428% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 2 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 16 0 0 0 16 1,217,485.83 0.00 0.00 0.00 1,217,485.83 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 16 0 0 0 16 1,217,485.83 0.00 0.00 0.00 1,217,485.83 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.578453% 0.000000% 0.000000% 0.000000% 0.578453% 0.482881% 0.000000% 0.000000% 0.000000% 0.482881% 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 0.578453% 0.000000% 0.000000% 0.000000% 0.578453% 0.482881% 0.000000% 0.000000% 0.000000% 0.482881%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 27,049.19

COLLATERAL STATEMENT Collateral Description Fixed Weighted Average Gross Coupon 5.949758% Weighted Average Pass-Through Rate 5.696758% Weighted Average Maturity(Stepdown Calculation ) 350 Beginning Scheduled Collateral Loan Count 4,508 Number Of Loans Paid In Full 23 Ending Scheduled Collateral Loan Count 4,485 Beginning Scheduled Collateral Balance 524,585,244.08 Ending Scheduled Collateral Balance 520,530,654.82 Ending Actual Collateral Balance at 31-Dec-2003 520,530,654.82 Monthly P &I Constant 3,908,139.57 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Non-PO Optimal Amount 6,397,390.30 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans 520,530,654.82 Scheduled Principal 1,307,176.72 Unscheduled Principal 2,747,412.54

Miscellaneous Reporting Class 1-A6 Priority % 10.752080%

Group Level Collateral Statement Group Group 1 Group 2 Total Collateral Description Fixed 30 Year Fixed 15 Year Fixed Weighted Average Coupon Rate 6.142205 5.745550 5.949758 Weighted Average Net Rate 5.892205 5.495550 5.699758 Weighted Average Maturity 350 166 350 Beginning Loan Count 1,728 2,780 4,508 Loans Paid In Full 9 14 23 Ending Loan Count 1,719 2,766 4,485 Beginning Scheduled Balance 270,070,253.23 254,514,990.85 524,585,244.08 Ending scheduled Balance 268,401,271.79 252,129,383.03 520,530,654.82 Record Date 12/31/2003 12/31/2003 12/31/2003 Principal And Interest Constant 1,662,830.77 2,245,308.80 3,908,139.57 Scheduled Principal 280,475.07 1,026,701.65 1,307,176.72 Unscheduled Principal 1,388,506.37 1,358,906.17 2,747,412.54 Scheduled Interest 1,382,355.70 1,218,607.15 2,600,962.85 Servicing Fees 56,264.64 53,023.95 109,288.59 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee 675.20 636.29 1,311.49 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 0.00 0.00 0.00 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 1,325,415.86 1,164,946.91 2,490,362.77 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 5.889205 5.492550 5.696758

Miscellaneous Reporting Group Group 1 CPR 6.004094% Subordinate % 5.335853% Subordinate Prepayment % 0.000000% Senior Prepayment % 100.000000% Senior % 94.664147% Group Group 2 CPR 6.246664% Subordinate % 2.233249% Subordinate Prepayment % 0.000000% Senior Prepayment % 100.000000% Senior % 97.766751%

Filing Compare · ALTERNATIVE LOAN TRUST MORT PASS THROUGH CERT SERIES 2003-4