EXHIBIT 10.1 CONTACT: CUSTOMER SERVICES -- CTSLINK WELLS FARGO BANK MINNESOTA, N.A. SECURITIES ADMINISTRATION SERVICES 7485 NEW HORIZON WAY FREDERICK, MD 21703 WWW.CTSLINK.COM TELEPHONE: (301) 815-6600 FAX: (301) 315-6660 SMT SERIES 2004-4 RECORD DATE: MARCH 31, 2005 DISTRIBUTION DATE: APRIL 20, 2005 CERTIFICATEHOLDER DISTRIBUTION SUMMARY Certificate Beginning Class Certificate Pass- Certificate Interest Principal Current Class CUSIP Description Through Rate Balance Distribution Distribution Realized Loss - ------ --------- ----------- ----------------- -------------- ------------ ------------- ------------- A 81744FBF3 SEN 2.46125% 638,664,181.87 1,309,926.86 26,420,094.06 0.00 X-1 81744FBG1 SEN 0.80000% 0.00 351.399.59 0.00 0.00 X-2 81744FBH9 SEN 0.75337% 0.00 400,958.73 0.00 0.00 X-B 81744FBJ5 SEN 0.37941% 0.00 7,260.10 0.00 0.00 B-1 81744FBK2 SUB 3.35000% 14,612,000.00 40,791.83 0.00 0.00 B-2 81744FBL0 SUB 3.75000% 8,350,000.00 26,093.75 0.00 0.00 B-3 81744FBM8 SUB 3.87487% 4,175,000.00 13,481.33 0.00 0.00 B-4 81744FBN6 SUB 3.87487% 2,509,000.00 8,101.71 0.00 0.00 B-5 81744FBP1 SUB 3.87487% 2,088,000.00 6,742.28 0.00 0.00 B-6 81744FBQ9 SUB 3.87487% 3,757,983.00 12,134.75 0.00 0.00 A-R 81744FBR7 RES 2.77482% 0.00 0.00 0.00 0.00 -------------- ------------ ------------- ---- Totals 674,156,164.87 2,176,890.93 26,420,094.06 0.00 -------------- ------------ ------------- ---- Ending Certificate Total Cumulative Class Balance Distribution Realized Loss - ------ ------------------ ------------- ------------- A 612,244,087.81 27,730,020.92 0.00 X-1 0.00 351,399.59 0.00 X-2 0.00 400,958.73 0.00 X-B 0.00 7,260.10 0.00 B-1 14,612,000.00 40,791.83 0.00 B-2 8,350,000.00 26,093.75 0.00 B-3 4,175,000.00 13,481.33 0.00 B-4 2,509,000.00 8,101.71 0.00 B-5 2,088,000.00 6,742.28 0.00 B-6 3,757,983.00 12,134.75 0.00 A-R 0.00 0.00 0.00 -------------- ------------- ---- Totals 647,736,070.81 28,596,984.99 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 Beginning Scheduled Unscheduled Original Face Certificate Principal Principal Realized Total Principal Class Amount Balance Distribution Distribution Accretion Loss (1) Reduction - ------ -------------- -------------- ------------ ------------- --------- -------- --------------- A 799,511,000.00 638,664,181.87 0.00 24,420,094.06 0.00 0.00 24,420,094.06 X-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 X-2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 X-B 0.00 0.00 0.00 0.00 0.00 0.00 0.00 B-1 14,612,000.00 14,612,000.00 0.00 0.00 0.00 0.00 0.00 B-2 8,350,000.00 8,350,000.00 0.00 0.00 0.00 0.00 0.00 B-3 4,175,000.00 4,175,000.00 0.00 0.00 0.00 0.00 0.00 B-4 2,509,000.00 2,509,000.00 0.00 0.00 0.00 0.00 0.00 B-5 2,088,000.00 2,088,000.00 0.00 0.00 0.00 0.00 0.00 B-6 3,757,983.00 3,757,983.00 0.00 0.00 0.00 0.00 0.00 A-R 100.00 0.00 0.00 0.00 0.00 0.00 0.00 -------------- -------------- ---- ------------- ---- ---- ------------- Totals 835,003,083.00 674,156,164.87 0.00 24,420,094.06 0.00 0.00 26,420,094.06 -------------- -------------- ---- ------------- ---- ---- ------------- Ending Certificate Ending Certificate Total Principal Class Balance Percentage Distribution - ------ ------------------ ------------------ --------------- A 612,244,087.81 0.76577319 24,420,094.06 X-1 0.00 0.00000000 0.00 X-2 0.00 0.00000000 0.00 X-B 0.00 0.00000000 0.00 B-1 14,612,000.00 1.00000000 0.00 B-2 8,350,000.00 1.00000000 0.00 B-3 4,175,000.00 1.00000000 0.00 B-4 2,509,000.00 1.00000000 0.00 B-5 2,088,000.00 1.00000000 0.00 B-6 3,757,983.00 1.00000000 0.00 A-R 0.00 0.00000000 0.00 -------------- ---------- ------------- Totals 647,736,070.81 0.77572896 26,420,094.06 -------------- ---------- ------------- (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 FACTORS STATEMENT Beginning Scheduled Unscheduled Original Face Certificate Principal Principal Realized Total Principal Class Amount Balance Distribution Distribution Accretion Loss (3) Reduction - ----- -------------- ------------- ------------ ------------ ---------- ---------- --------------- A 799,511,000.00 798.81850515 0.00000000 33.04531652 0.00000000 0.00000000 33.04531652 X-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 X-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 X-B 0.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 14,612,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-2 8,350,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-3 4,175,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-4 2,509,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-5 2,088,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-6 3,757,983.00 1000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-R 100.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 Ending Certificate Ending Certificate Total Principal Class Balance Percentage Distribution - ----- ------------------- ------------------ --------------- A 765.77318862 0.76577319 33.04531652 X-1 0.00000000 0.00000000 0.00000000 X-2 0.00000000 0.00000000 0.00000000 X-B 0.00000000 0.00000000 0.00000000 B-1 1000.00000000 1.00000000 0.00000000 B-2 1000.00000000 1.00000000 0.00000000 B-3 1000.00000000 1.00000000 0.00000000 B-4 1000.00000000 1.00000000 0.00000000 B-5 1000.00000000 1.00000000 0.00000000 B-6 1000.00000000 1.00000000 0.00000000 A-R 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 Non- Certificate/ Current Unpaid Current Supported Original Face Current Notional Accrued Interest Interest Interest Realized Class Amount Certificate Rate Balance Interest Shortfall Shortfall Shortfall Loss (4) - ------ -------------- ---------------- --------------- ------------ ---------- --------- --------- -------- A 799,511,000.00 2.46125% 638,664,181.87 1,309,926.85 0.00 0.00 (0.01) 0.00 X-1 0.00 0.80000% 527,099,373.98 351,399.58 0.00 0.00 0.00 0.00 X-2 0.00 0.75337% 638,664,181.87 400,958.73 0.00 0.00 0.00 0.00 X-B 0.00 0.37941% 22,962,000.00 7,260.10 0.00 0.00 0.00 0.00 B-1 14,612,000.00 3.35000% 14,612,000.00 40,791.83 0.00 0.00 0.00 0.00 B-2 8,350,000.00 3.75000% 8,350,000.00 26,093.75 0.00 0.00 0.00 0.00 B-3 4,175,000.00 3.87487% 4,175,000.00 13,481.33 0.00 0.00 0.00 0.00 B-4 2,509,000.00 3.87487% 2,509,000.00 8,101.71 0.00 0.00 0.00 0.00 B-5 2,088,000.00 3.87487% 2,088,000.00 6,742.28 0.00 0.00 0.00 0.00 B-6 3,757,983.00 3.87487% 3,757,983.00 12,134.75 0.00 0.00 0.00 0.00 A-R 100.00 2.77482% 0.00 0.00 0.00 0.00 0.00 0.00 -------------- ------------ ---- ---- ----- ---- Totals 835,003,083.00 2,176,890.91 0.00 0.00 (0.01) 0.00 -------------- ------------ ---- ---- ----- ---- Remaining Ending Unpaid Certificate/ Total Interest Interest Notational Class Distribution Shortfall Balance - ------ --------------- ---------- -------------- A 1,309,926.86 0.00 612,244,087.81 X-1 31,399.59 0.00 507,261,503.29 X-2 400,958.73 0.00 612,244,087.81 X-B 7,260.10 0.00 22,962,000.00 B-1 40,791.83 0.00 14,612,000.00 B-2 26,093.75 0.00 8,350,000.00 B-3 13,481.33 0.00 4,175,000.00 B-4 8,101.71 0.00 2,509,000.00 B-5 6,742.28 0.00 2,088,000.00 B-6 12,134.75 0.00 3,757,983.00 A-R 0.00 0.00 0.00 ------------ ---- Totals 2,176,890.93 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 Payment of Non- Current Beginning Unpaid Current Supported Class Original Face Certificate Certificate/ Current Accrued Interest Interest Interest Realized (5) Amount Rate Notional Balance Interest Shortfall Shortfall Shortfall Loss (6) - ----- -------------- ----------- ---------------- --------------- ---------- ---------- ------------ ---------- A 799,511,000.00 2.46125% 798.81850515 1.63841004 0.00000000 0.00000000 (0.00000001) 0.00000000 X-1 0.00 0.80000% 659.27720066 0.43951813 0.00000000 0.00000000 0.00000000 0.00000000 X-2 0.00 0.75337% 798.81850515 0.50150496 0.00000000 0.00000000 0.00000000 0.00000000 X-B 0.00 0.37941% 1000.00000000 0.31617890 0.00000000 0.00000000 0.00000000 0.00000000 B-1 14,612,000.00 3.35000% 1000.00000000 2.79166644 0.00000000 0.00000000 0.00000000 0.00000000 B-2 8,350,000.00 3.75000% 1000.00000000 3.12500000 0.00000000 0.00000000 0.00000000 0.00000000 B-3 4,175,000.00 3.87487% 1000.00000000 3.22906108 0.00000000 0.00000000 0.00000000 0.00000000 B-4 2,509,000.00 3.87487% 1000.00000000 3.22905939 0.00000000 0.00000000 0.00000000 0.00000000 B-5 2,088,000.00 3.87487% 1000.00000000 3.22906130 0.00000000 0.00000000 0.00000000 0.00000000 B-6 3,757,983.00 3.87487% 1000.00000000 3.22905931 0.00000000 0.00000000 0.00000000 0.00000000 A-R 100.00 2.77482% 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 Remaining Unpaid Class Total Interest Interest Ending Certificate/ (5) Distribution Shortfall Notational Balance - ----- -------------- ---------- ------------------- A 1.63841005 0.00000000 765.77318862 X-1 0.43951814 0.00000000 634.46469566 X-2 0.50150496 0.00000000 765.77318862 X-B 0.31617890 0.00000000 1000.00000000 B-1 2.79166644 0.00000000 1000.00000000 B-2 3.12500000 0.00000000 1000.00000000 B-3 3.22906108 0.00000000 1000.00000000 B-4 3.22905939 0.00000000 1000.00000000 B-5 3.22906130 0.00000000 1000.00000000 B-6 3.22905931 0.00000000 1000.00000000 A-R 0.00000000 0.00000000 0.00000000 (5) Per $1 denomination (6) Amount does not include excess special hazard, bankruptcy, or fraud losses unless otherwise disclosed. Please refer to the prospectus supplement for a full description. CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 28,812,395.82 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Losses (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 ------------- Total Deposits 28,812,395.82 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 215,410.83 Payment of Interest and Principal 28,596,984.99 ------------- Total Withdrawals (Pool Distribution Amount) 28,812,395.82 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 211,197.36 Master Servicing Fee 4,213.47 Supported Prepayment/Curtailment Interest Shortfall 0.00 ---------- Net Servicing Fee 215,410.83 ========== OTHER ACCOUNTS Beginning Current Current Ending Account Type Balance Withdrawals Deposits Balance - --------------------- --------- ----------- -------- -------- Class X-1 Sub Account 4,500.00 0.00 0.00 4,500.00 Class X-2 Sub Account 4,500.00 0.00 0.00 4,500.00 Class X-B Sub Account 1,000.00 0.00 0.00 1,000.00 LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENT - ---------------------------------------------- No. of Principal Loans Balance 0-29 Days 0 0.00 30 Days 15 3,815,665.06 60 Days 1 294,751.49 90 Days 0 0.00 120 Days 0 0.00 150 Days 1 138,400.00 180+ Days 0 0.00 --- ------------ 17 4,248,816.55 No. of Principal Loans Balance 0-29 Days 0.000000% 0.000000% 30 Days 0.730282% 0.589073% 60 Days 0.048685% 0.045505% 90 Days 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 150 Days 0.048685% 0.021367% 180+ Days 0.000000% 0.000000% -------- -------- 0.827653% 0.655944% BANKRUPTCY - ---------------------------------------------- No. of Principal Loans Balance 0-29 Days 0 0.00 30 Days 0 0.00 60 Days 0 0.00 90 Days 0 0.00 120 Days 0 0.00 150 Days 0 0.00 180+ Days 0 0.00 --- ---- 0 0.00 No. of Principal Loans Balance 0-29 Days 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% -------- -------- 0.000000% 0.000000% FORECLOSURE - ---------------------------------------------- No. of Principal Loans Balance 0-29 Days 0 0.00 30 Days 0 0.00 60 Days 0 0.00 90 Days 0 0.00 120 Days 0 0.00 150 Days 0 0.00 180+ Days 0 0.00 --- ---- 0 0.00 No. of Principal Loans Balance 0-29 Days 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% -------- -------- 0.000000% 0.000000% REO - ---------------------------------------------- No. of Principal Loans Balance 0-29 Days 0 0.00 30 Days 0 0.00 60 Days 0 0.00 90 Days 0 0.00 120 Days 0 0.00 150 Days 0 0.00 180+ Days 0 0.00 --- ---- 0 0.00 No. of Principal Loans Balance 0-29 Days 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% -------- -------- 0.000000% 0.000000% TOTAL - ---------------------------------------------- No. of Principal Loans Balance 0-29 Days 0 0.00 30 Days 15 3,815,665.06 60 Days 1 294,751.49 90 Days 0 0.00 120 Days 0 0.00 150 Days 1 138,400.00 180+ Days 0 0.00 --- ------------ 17 4,248,816.55 No. of Principal Loans Balance 0-29 Days 0.000000% 0.000000% 30 Days 0.730282% 0.589073% 60 Days 0.048685% 0.045505% 90 Days 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 150 Days 0.048685% 0.021367% 180+ Days 0.000000% 0.000000% -------- -------- 0.827653% 0.655944% Current Period Class A Insufficient Funds: 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 0.00 Original $ Original% Current $ Current % Current Class % Prepayment % ------------- ----------- ------------- ----------- --------------- ------------ Class A 35,491,983.00 4.25052119% 35,491,983.00 5.47938961% 94.520610% 0.000000% Class X-1 35,491,983.00 4.25052119% 35,491,983.00 5.47938961% 0.000000% 0.000000% Class X-2 35,491,983.00 4.25052119% 35,491,983.00 5.47938961% 0.000000% 0.000000% Class B-1 20,879,983.00 2.50058753% 20,879,983.00 3.22353253% 2.255857% 41.169861% Class B-2 12,529,983.00 1.50059123% 12,529,983.00 1.93442724% 1.289105% 23.526440% Class B-3 8,354,983.00 1.00059307% 8,354,983.00 1.28987459% 0.644553% 11.763220% Class B-4 5,845,983.00 0.70011514% 5,845,983.00 0.90252547% 0.387349% 7.069202% Class B-5 3,757,983.00 0.45005618% 3,757,983.00 0.58017195% 0.322354% 5.883019% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.580172% 10.588259% Please refer to the prospectus supplement for a full description of loss exposure COLLATERAL STATEMENT Collateral Description Mixed Arm Weighted Average Gross Coupon 4.258304% Weighted Average Net Coupon 3.882372% Weighted Average Pass-Through Rate 3.874872% Weighted Average Maturity (Stepdown Calculation) 331 Beginning Scheduled Collateral Loan Count 2,122 Number of Loans Paid in Full 68 Ending Scheduled Collateral Loan Count 2,054 Beginning Scheduled Collateral Balance 674,156,165.61 Ending Scheduled Collateral Balance 647,736,071.55 Ending Actual Collateral Balance at 31-Mar-2005 647,741,093.28 Monthly P&I Constant 2,392,301.74 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realization Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 28,489,639.32 Ending Scheduled Balance for Premium Loans 647,736,071.55 Scheduled Principal 0.00 Unscheduled Principal 26,420,094.06 MISCELLANEOUS REPORTING One-Month Libor Loan Balance' 92,639,640.05 Six-Month Libor Loan Balance 555,096,431.50 Prorata Senior Percentage 94.735347% Senior Percentage 100.000000% Senior Prepayment Percentage 100.000000% Subordinate Percentage 0.000000% Subordinate Prepayment Percentage 0.000000%