8-K 1 we724696-8k.txt CURRENT REPORT 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: May 29, 2003 (Date of earliest event reported) Commission File No. 333-98129 Wells Fargo Asset Securities Corporation --------------------------------------------------------------------- Delaware 52-1972128 ------------------------ ---------------------------------- (State of Incorporation) I.R.S. Employer Identification No. 7485 New Horizon Way, Frederick, Maryland 21703 ----------------------------------------- --------- Address of principal executive offices (Zip Code) (301) 846-8881 -------------------------------------------------------------------------------- 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 May 29, 2003, Wells Fargo Asset Securities Corporation, a Delaware corporation (the "Registrant"), sold Mortgage Pass-Through Certificates, Series 2003-4, Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class A-13, Class A-14, Class A-15, Class A-16, Class A-17, Class A-18, Class A-PO, Class A-R, Class A-LR, Class B-1, Class B-2 and Class B-3 (the "Offered Certificates"), having an aggregate original principal balance of $497,930,971.00. The Offered Certificates were issued pursuant to a Pooling and Servicing Agreement, dated as of May 29, 2003, among the Registrant, Wells Fargo Bank Minnesota, National Association, as master servicer (the "Master Servicer" or "Wells Fargo Bank") and Wachovia Bank, National Association, as trustee (the "Agreement"), a copy of which is filed as an exhibit hereto. Mortgage Pass-Through Certificates, Series 2003-4, Class B-4, Class B-5 and Class B-6 Certificates, having an aggregate initial principal balance of $2,502,990.73 (the "Private Class B Certificates" and, together with the Offered Certificates, the "Certificates"), were also issued pursuant to the Agreement. As of the date of initial issuance, the Offered Certificates evidenced an approximate 99.50% undivided interest in a trust fund (the "Trust Estate"), consisting principally of a pool of fixed interest rate, conventional, monthly pay, fully-amortizing, one-to four-family residential first mortgage loans, other than the Fixed Retained Yield (as defined in the Agreement), which may include loans secured by shares issued by cooperative housing corporations. The remaining undivided interests in the Trust Estate are evidenced by the Private Class B Certificates. Distributions on the Private Class B Certificates are subordinated to distributions on the Offered Certificates. Interest on the Offered Certificates will be distributed on each Distribution Date (as defined in the Agreement). Monthly distributions in reduction of the principal balance of the Offered Certificates will be allocated to the Offered Certificates in accordance with the priorities set forth in the Agreement. Distributions of interest and in reduction of principal balance on any Distribution Date will be made to the extent that the Pool Distribution Amount is sufficient therefor. Elections will be made to treat the Trust Estate as two REMICs for federal income tax purposes (the "Upper-Tier REMIC" and "Lower-Tier REMIC," respectively). Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class A-13, Class A-14, Class A-15, Class A-16, Class A-17, Class A-18, Class A-PO, Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6 Certificates will be treated as "regular interests" in the Upper-Tier REMIC and the Class A-R and Class A-LR Certificates will be treated as the "residual interests" in the Upper-Tier REMIC and Lower-Tier REMIC, respectively. ITEM 7. Financial Statements and Exhibits (c) Exhibits Item 601(a) of Regulation S-K Exhibit No. Description ----------- ----------- (EX-4) Pooling and Servicing Agreement, dated as of May 29, 2003, among Wells Fargo Asset Securities Corporation, Wells Fargo Bank Minnesota, National Association and Wachovia Bank, 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. WELLS FARGO ASSET SECURITIES CORPORATION May 29, 2003 /s/ Alan S. McKenney --------------------------------------- Alan S. McKenney Vice President INDEX TO EXHIBITS Paper (P) or Exhibit No. Description Electronic (E) ----------- ----------- -------------- (EX-4) Pooling and Servicing Agreement, E dated as of May 29, 2003 among Wells Fargo Asset Securities Corporation, Wells Fargo Bank Minnesota, National Association and Wachovia Bank, National Association, as trustee.

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 5/31/03 Distribution Date: 6/25/03 WFMBS 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 A-PO 94978RAR2 PO 0.00000% 149,871.15 0.00 252.66 A-1 94978RAA9 SEN 4.00000% 69,226,000.00 230,705.64 271,422.42 A-2 94978RAB7 SEN 5.50000% 10,000,000.00 45,823.86 0.00 A-3 94978RAC5 SEN 5.50000% 15,580,000.00 71,393.57 55,002.10 A-4 94978RAD3 SEN 5.50000% 12,949,000.00 59,337.32 0.00 A-5 94978RAE1 SEN 5.50000% 15,000,400.00 68,737.62 1,155,561.38 A-6 94978RAF8 SEN 2.90000% 39,714,400.00 95,956.63 3,059,413.54 A-7 94978RAG6 SEN 15.03330% 10,831,200.00 135,662.52 834,385.51 A-8 94978RAH4 SEN 5.50000% 5,000,000.00 22,911.93 116,304.69 A-9 94978RAJ0 SEN 5.50000% 100,000,000.00 458,238.61 2,014,843.00 A-10 94978RAK7 SEN 5.50000% 5,281,000.00 24,199.58 0.00 A-11 94978RAL5 SEN 5.50000% 4,918,000.00 22,536.17 0.00 A-12 94978RAM3 SEN 5.50000% 16,919,000.00 77,529.39 0.00 A-13 94978RAN1 SEN 5.50000% 0.00 144,835.89 0.00 A-14 94978RAP6 SEN 5.50000% 30,000,000.00 137,471.58 697,828.17 A-15 94978RAQ4 SEN 5.50000% 2,500,000.00 11,455.97 58,152.35 A-16 94978RAX9 SEN 5.50000% 5,264,000.00 24,121.68 0.00 A-17 94978RAY7 SEN 4.50000% 70,000,000.00 262,445.75 274,457.13 A-18 94978RAZ4 SEN 5.50000% 73,589,000.00 337,213.21 0.00 A-R 94978RAS0 RES 5.50000% 50.00 0.23 50.00 A-LR 94978RAT8 RES 5.50000% 50.00 0.53 50.00 B-1 94978RAU5 SUB 5.50000% 6,255,000.00 28,662.83 6,353.54 B-2 94978RAV3 SUB 5.50000% 3,003,000.00 13,760.91 3,050.31 B-3 94978RAW1 SUB 5.50000% 1,751,000.00 8,023.76 1,778.59 B-4 94978RBA8 SUB 5.50000% 1,001,000.00 4,586.97 1,016.77 B-5 94978RBB6 SUB 5.50000% 751,000.00 3,441.37 762.83 B-6 94978RBC4 SUB 5.50000% 750,990.73 3,441.33 762.82 Totals 500,433,961.88 2,292,494.85 8,551,447.81

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 149,618.49 252.66 0.00 A-1 0.00 68,954,577.58 502,128.06 0.00 A-2 0.00 10,000,000.00 45,823.86 0.00 A-3 0.00 15,524,997.90 126,395.67 0.00 A-4 0.00 12,949,000.00 59,337.32 0.00 A-5 0.00 13,844,838.62 1,224,299.00 0.00 A-6 0.00 36,654,986.46 3,155,370.17 0.00 A-7 0.00 9,996,814.49 970,048.03 0.00 A-8 0.00 4,883,695.31 139,216.62 0.00 A-9 0.00 97,985,157.00 2,473,081.61 0.00 A-10 0.00 5,281,000.00 24,199.58 0.00 A-11 0.00 4,918,000.00 22,536.17 0.00 A-12 0.00 16,919,000.00 77,529.39 0.00 A-13 0.00 0.00 144,835.89 0.00 A-14 0.00 29,302,171.83 835,299.75 0.00 A-15 0.00 2,441,847.65 69,608.32 0.00 A-16 0.00 5,264,000.00 24,121.68 0.00 A-17 0.00 69,725,542.87 536,902.88 0.00 A-18 0.00 73,589,000.00 337,213.21 0.00 A-R 0.00 0.00 50.23 0.00 A-LR 0.00 0.00 50.53 0.00 B-1 0.00 6,248,646.46 35,016.37 0.00 B-2 0.00 2,999,949.69 16,811.22 0.00 B-3 0.00 1,749,221.41 9,802.35 0.00 B-4 0.00 999,983.23 5,603.74 0.00 B-5 0.00 750,237.17 4,204.20 0.00 B-6 0.00 750,227.91 4,204.15 0.00 Totals 0.00 491,882,514.07 10,843,942.66 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) A-PO 149,871.15 149,871.15 189.24 63.41 0.00 0.00 A-1 69,226,000.00 69,226,000.00 15,719.22 255,703.21 0.00 0.00 A-2 10,000,000.00 10,000,000.00 0.00 0.00 0.00 0.00 A-3 15,580,000.00 15,580,000.00 3,185.40 51,816.70 0.00 0.00 A-4 12,949,000.00 12,949,000.00 0.00 0.00 0.00 0.00 A-5 15,000,400.00 15,000,400.00 66,923.43 1,088,637.95 0.00 0.00 A-6 39,714,400.00 39,714,400.00 177,183.53 2,882,230.01 0.00 0.00 A-7 10,831,200.00 10,831,200.00 48,322.78 786,062.73 0.00 0.00 A-8 5,000,000.00 5,000,000.00 6,735.70 109,569.00 0.00 0.00 A-9 100,000,000.00 100,000,000.00 116,688.05 1,898,154.95 0.00 0.00 A-10 5,281,000.00 5,281,000.00 0.00 0.00 0.00 0.00 A-11 4,918,000.00 4,918,000.00 0.00 0.00 0.00 0.00 A-12 16,919,000.00 16,919,000.00 0.00 0.00 0.00 0.00 A-13 0.00 0.00 0.00 0.00 0.00 0.00 A-14 30,000,000.00 30,000,000.00 40,414.17 657,414.00 0.00 0.00 A-15 2,500,000.00 2,500,000.00 3,367.85 54,784.50 0.00 0.00 A-16 5,264,000.00 5,264,000.00 0.00 0.00 0.00 0.00 A-17 70,000,000.00 70,000,000.00 15,894.97 258,562.17 0.00 0.00 A-18 73,589,000.00 73,589,000.00 0.00 0.00 0.00 0.00 A-R 50.00 50.00 2.90 47.10 0.00 0.00 A-LR 50.00 50.00 2.90 47.10 0.00 0.00 B-1 6,255,000.00 6,255,000.00 6,353.54 0.00 0.00 0.00 B-2 3,003,000.00 3,003,000.00 3,050.31 0.00 0.00 0.00 B-3 1,751,000.00 1,751,000.00 1,778.59 0.00 0.00 0.00 B-4 1,001,000.00 1,001,000.00 1,016.77 0.00 0.00 0.00 B-5 751,000.00 751,000.00 762.83 0.00 0.00 0.00 B-6 750,990.73 750,990.73 762.82 0.00 0.00 0.00 Totals 500,433,961.88 500,433,961.88 508,355.00 8,043,092.83 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.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution A-PO 252.66 149,618.49 0.99831415 252.66 A-1 271,422.42 68,954,577.58 0.99607918 271,422.42 A-2 0.00 10,000,000.00 1.00000000 0.00 A-3 55,002.10 15,524,997.90 0.99646970 55,002.10 A-4 0.00 12,949,000.00 1.00000000 0.00 A-5 1,155,561.38 13,844,838.62 0.92296463 1,155,561.38 A-6 3,059,413.54 36,654,986.46 0.92296463 3,059,413.54 A-7 834,385.51 9,996,814.49 0.92296463 834,385.51 A-8 116,304.69 4,883,695.31 0.97673906 116,304.69 A-9 2,014,843.00 97,985,157.00 0.97985157 2,014,843.00 A-10 0.00 5,281,000.00 1.00000000 0.00 A-11 0.00 4,918,000.00 1.00000000 0.00 A-12 0.00 16,919,000.00 1.00000000 0.00 A-13 0.00 0.00 0.00000000 0.00 A-14 697,828.17 29,302,171.83 0.97673906 697,828.17 A-15 58,152.35 2,441,847.65 0.97673906 58,152.35 A-16 0.00 5,264,000.00 1.00000000 0.00 A-17 274,457.13 69,725,542.87 0.99607918 274,457.13 A-18 0.00 73,589,000.00 1.00000000 0.00 A-R 50.00 0.00 0.00000000 50.00 A-LR 50.00 0.00 0.00000000 50.00 B-1 6,353.54 6,248,646.46 0.99898425 6,353.54 B-2 3,050.31 2,999,949.69 0.99898425 3,050.31 B-3 1,778.59 1,749,221.41 0.99898424 1,778.59 B-4 1,016.77 999,983.23 0.99898425 1,016.77 B-5 762.83 750,237.17 0.99898425 762.83 B-6 762.82 750,227.91 0.99898425 762.82 Totals 8,551,447.81 491,882,514.07 0.98291194 8,551,447.81

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 149,871.15 1000.00000000 1.26268465 0.42309677 0.00000000 A-1 69,226,000.00 1000.00000000 0.22707104 3.69374527 0.00000000 A-2 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 15,580,000.00 1000.00000000 0.20445443 3.32584724 0.00000000 A-4 12,949,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 15,000,400.00 1000.00000000 4.46144303 72.57392803 0.00000000 A-6 39,714,400.00 1000.00000000 4.46144295 72.57392810 0.00000000 A-7 10,831,200.00 1000.00000000 4.46144287 72.57392810 0.00000000 A-8 5,000,000.00 1000.00000000 1.34714000 21.91380000 0.00000000 A-9 100,000,000.00 1000.00000000 1.16688050 18.98154950 0.00000000 A-10 5,281,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-11 4,918,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-12 16,919,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-13 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-14 30,000,000.00 1000.00000000 1.34713900 21.91380000 0.00000000 A-15 2,500,000.00 1000.00000000 1.34714000 21.91380000 0.00000000 A-16 5,264,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-17 70,000,000.00 1000.00000000 0.22707100 3.69374529 0.00000000 A-18 73,589,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-R 50.00 1000.00000000 58.00000000 942.00000000 0.00000000 A-LR 50.00 1000.00000000 58.00000000 942.00000000 0.00000000 B-1 6,255,000.00 1000.00000000 1.01575380 0.00000000 0.00000000 B-2 3,003,000.00 1000.00000000 1.01575425 0.00000000 0.00000000 B-3 1,751,000.00 1000.00000000 1.01575671 0.00000000 0.00000000 B-4 1,001,000.00 1000.00000000 1.01575425 0.00000000 0.00000000 B-5 751,000.00 1000.00000000 1.01575233 0.00000000 0.00000000 B-6 750,990.73 1000.00000000 1.01575155 0.00000000 0.00000000 (2) Per $1000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution A-PO 0.00000000 1.68584814 998.31415186 0.99831415 1.68584814 A-1 0.00000000 3.92081617 996.07918383 0.99607918 3.92081617 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 3.53030167 996.46969833 0.99646970 3.53030167 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 77.03537106 922.96462894 0.92296463 77.03537106 A-6 0.00000000 77.03537105 922.96462895 0.92296463 77.03537105 A-7 0.00000000 77.03537097 922.96462903 0.92296463 77.03537097 A-8 0.00000000 23.26093800 976.73906200 0.97673906 23.26093800 A-9 0.00000000 20.14843000 979.85157000 0.97985157 20.14843000 A-10 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-11 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-12 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-13 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-14 0.00000000 23.26093900 976.73906100 0.97673906 23.26093900 A-15 0.00000000 23.26094000 976.73906000 0.97673906 23.26094000 A-16 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-17 0.00000000 3.92081614 996.07918386 0.99607918 3.92081614 A-18 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-R 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 A-LR 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 B-1 0.00000000 1.01575380 998.98424620 0.99898425 1.01575380 B-2 0.00000000 1.01575425 998.98424575 0.99898425 1.01575425 B-3 0.00000000 1.01575671 998.98424329 0.99898424 1.01575671 B-4 0.00000000 1.01575425 998.98424575 0.99898425 1.01575425 B-5 0.00000000 1.01575233 998.98424767 0.99898425 1.01575233 B-6 0.00000000 1.01575155 998.98424845 0.99898425 1.01575155 (3) Amount Does Not Include Excess Special Hazard, Bankrupcy, 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 A-PO 149,871.15 0.00000% 149,871.15 0.00 0.00 0.00 A-1 69,226,000.00 4.00000% 69,226,000.00 230,753.33 0.00 0.00 A-2 10,000,000.00 5.50000% 10,000,000.00 45,833.33 0.00 0.00 A-3 15,580,000.00 5.50000% 15,580,000.00 71,408.33 0.00 0.00 A-4 12,949,000.00 5.50000% 12,949,000.00 59,349.58 0.00 0.00 A-5 15,000,400.00 5.50000% 15,000,400.00 68,751.83 0.00 0.00 A-6 39,714,400.00 2.90000% 39,714,400.00 95,976.47 0.00 0.00 A-7 10,831,200.00 15.03330% 10,831,200.00 135,690.57 0.00 0.00 A-8 5,000,000.00 5.50000% 5,000,000.00 22,916.67 0.00 0.00 A-9 100,000,000.00 5.50000% 100,000,000.00 458,333.33 0.00 0.00 A-10 5,281,000.00 5.50000% 5,281,000.00 24,204.58 0.00 0.00 A-11 4,918,000.00 5.50000% 4,918,000.00 22,540.83 0.00 0.00 A-12 16,919,000.00 5.50000% 16,919,000.00 77,545.42 0.00 0.00 A-13 0.00 5.50000% 31,607,090.00 144,865.83 0.00 0.00 A-14 30,000,000.00 5.50000% 30,000,000.00 137,500.00 0.00 0.00 A-15 2,500,000.00 5.50000% 2,500,000.00 11,458.33 0.00 0.00 A-16 5,264,000.00 5.50000% 5,264,000.00 24,126.67 0.00 0.00 A-17 70,000,000.00 4.50000% 70,000,000.00 262,500.00 0.00 0.00 A-18 73,589,000.00 5.50000% 73,589,000.00 337,282.92 0.00 0.00 A-R 50.00 5.50000% 50.00 0.23 0.00 0.00 A-LR 50.00 5.50000% 50.00 0.23 0.00 0.00 B-1 6,255,000.00 5.50000% 6,255,000.00 28,668.75 0.00 0.00 B-2 3,003,000.00 5.50000% 3,003,000.00 13,763.75 0.00 0.00 B-3 1,751,000.00 5.50000% 1,751,000.00 8,025.42 0.00 0.00 B-4 1,001,000.00 5.50000% 1,001,000.00 4,587.92 0.00 0.00 B-5 751,000.00 5.50000% 751,000.00 3,442.08 0.00 0.00 B-6 750,990.73 5.50000% 750,990.73 3,442.04 0.00 0.00 Totals 500,433,961.88 2,292,968.44 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 A-PO 0.00 0.00 0.00 0.00 149,618.49 A-1 47.69 0.00 230,705.64 0.00 68,954,577.58 A-2 9.47 0.00 45,823.86 0.00 10,000,000.00 A-3 14.76 0.00 71,393.57 0.00 15,524,997.90 A-4 12.27 0.00 59,337.32 0.00 12,949,000.00 A-5 14.21 0.00 68,737.62 0.00 13,844,838.62 A-6 19.84 0.00 95,956.63 0.00 36,654,986.46 A-7 28.04 0.00 135,662.52 0.00 9,996,814.49 A-8 4.74 0.00 22,911.93 0.00 4,883,695.31 A-9 94.73 0.00 458,238.61 0.00 97,985,157.00 A-10 5.00 0.00 24,199.58 0.00 5,281,000.00 A-11 4.66 0.00 22,536.17 0.00 4,918,000.00 A-12 16.03 0.00 77,529.39 0.00 16,919,000.00 A-13 29.94 0.00 144,835.89 0.00 31,483,165.31 A-14 28.42 0.00 137,471.58 0.00 29,302,171.83 A-15 2.37 0.00 11,455.97 0.00 2,441,847.65 A-16 4.99 0.00 24,121.68 0.00 5,264,000.00 A-17 54.25 0.00 262,445.75 0.00 69,725,542.87 A-18 69.71 0.00 337,213.21 0.00 73,589,000.00 A-R 0.00 0.00 0.23 0.00 0.00 A-LR 0.00 0.00 0.53 0.00 0.00 B-1 5.92 0.00 28,662.83 0.00 6,248,646.46 B-2 2.84 0.00 13,760.91 0.00 2,999,949.69 B-3 1.66 0.00 8,023.76 0.00 1,749,221.41 B-4 0.95 0.00 4,586.97 0.00 999,983.23 B-5 0.71 0.00 3,441.37 0.00 750,237.17 B-6 0.71 0.00 3,441.33 0.00 750,227.91 Totals 473.91 0.00 2,292,494.85 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankrupcy, 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 A-PO 149,871.15 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 A-1 69,226,000.00 4.00000% 1000.00000000 3.33333329 0.00000000 0.00000000 A-2 10,000,000.00 5.50000% 1000.00000000 4.58333300 0.00000000 0.00000000 A-3 15,580,000.00 5.50000% 1000.00000000 4.58333312 0.00000000 0.00000000 A-4 12,949,000.00 5.50000% 1000.00000000 4.58333308 0.00000000 0.00000000 A-5 15,000,400.00 5.50000% 1000.00000000 4.58333311 0.00000000 0.00000000 A-6 39,714,400.00 2.90000% 1000.00000000 2.41666675 0.00000000 0.00000000 A-7 10,831,200.00 15.03330% 1000.00000000 12.52775039 0.00000000 0.00000000 A-8 5,000,000.00 5.50000% 1000.00000000 4.58333400 0.00000000 0.00000000 A-9 100,000,000.00 5.50000% 1000.00000000 4.58333330 0.00000000 0.00000000 A-10 5,281,000.00 5.50000% 1000.00000000 4.58333270 0.00000000 0.00000000 A-11 4,918,000.00 5.50000% 1000.00000000 4.58333266 0.00000000 0.00000000 A-12 16,919,000.00 5.50000% 1000.00000000 4.58333353 0.00000000 0.00000000 A-13 0.00 5.50000% 1000.00000000 4.58333336 0.00000000 0.00000000 A-14 30,000,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 A-15 2,500,000.00 5.50000% 1000.00000000 4.58333200 0.00000000 0.00000000 A-16 5,264,000.00 5.50000% 1000.00000000 4.58333397 0.00000000 0.00000000 A-17 70,000,000.00 4.50000% 1000.00000000 3.75000000 0.00000000 0.00000000 A-18 73,589,000.00 5.50000% 1000.00000000 4.58333338 0.00000000 0.00000000 A-R 50.00 5.50000% 1000.00000000 4.60000000 0.00000000 0.00000000 A-LR 50.00 5.50000% 1000.00000000 4.60000000 0.00000000 0.00000000 B-1 6,255,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 B-2 3,003,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 B-3 1,751,000.00 5.50000% 1000.00000000 4.58333524 0.00000000 0.00000000 B-4 1,001,000.00 5.50000% 1000.00000000 4.58333666 0.00000000 0.00000000 B-5 751,000.00 5.50000% 1000.00000000 4.58332889 0.00000000 0.00000000 B-6 750,990.73 5.50000% 1000.00000000 4.58333221 0.00000000 0.00000000 (5) All classes are per $1000 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 A-PO 0.00000000 0.00000000 0.00000000 0.00000000 998.31415186 A-1 0.00068890 0.00000000 3.33264438 0.00000000 996.07918383 A-2 0.00094700 0.00000000 4.58238600 0.00000000 1000.00000000 A-3 0.00094737 0.00000000 4.58238575 0.00000000 996.46969833 A-4 0.00094756 0.00000000 4.58238628 0.00000000 1000.00000000 A-5 0.00094731 0.00000000 4.58238580 0.00000000 922.96462894 A-6 0.00049957 0.00000000 2.41616718 0.00000000 922.96462895 A-7 0.00258882 0.00000000 12.52516065 0.00000000 922.96462903 A-8 0.00094800 0.00000000 4.58238600 0.00000000 976.73906200 A-9 0.00094730 0.00000000 4.58238610 0.00000000 979.85157000 A-10 0.00094679 0.00000000 4.58238591 0.00000000 1000.00000000 A-11 0.00094754 0.00000000 4.58238512 0.00000000 1000.00000000 A-12 0.00094746 0.00000000 4.58238607 0.00000000 1000.00000000 A-13 0.00094726 0.00000000 4.58238610 0.00000000 996.07921229 A-14 0.00094733 0.00000000 4.58238600 0.00000000 976.73906100 A-15 0.00094800 0.00000000 4.58238800 0.00000000 976.73906000 A-16 0.00094795 0.00000000 4.58238602 0.00000000 1000.00000000 A-17 0.00077500 0.00000000 3.74922500 0.00000000 996.07918386 A-18 0.00094729 0.00000000 4.58238609 0.00000000 1000.00000000 A-R 0.00000000 0.00000000 4.60000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 10.60000000 0.00000000 0.00000000 B-1 0.00094644 0.00000000 4.58238689 0.00000000 998.98424620 B-2 0.00094572 0.00000000 4.58238761 0.00000000 998.98424575 B-3 0.00094803 0.00000000 4.58238721 0.00000000 998.98424329 B-4 0.00094905 0.00000000 4.58238761 0.00000000 998.98424575 B-5 0.00094541 0.00000000 4.58238349 0.00000000 998.98424767 B-6 0.00094542 0.00000000 4.58238679 0.00000000 998.98424845 (6) Amount Does Not Include Excess Special Hazard, Bankrupcy,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 10,968,779.24 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 10,968,779.24 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 104,699.19 Payment of Interest and Principal 10,843,942.66 Total Withdrawals (Pool Distribution Amount) 10,948,641.85 Ending Balance 20,137.39

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 4,172.36 Servicing Fee Support 3,698.45 Non-Supported Prepayment/Curtailment Interest Shortfall 473.91

SERVICING FEES Gross Servicing Fee 104,228.50 Master Servicing Fee 4,169.14 Supported Prepayment/Curtailment Interest Shortfall 3,698.45 Net Servicing Fee 104,699.19

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 2 0 0 0 2 670,000.00 0.00 0.00 0.00 670,000.00 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 2 0 0 0 2 670,000.00 0.00 0.00 0.00 670,000.00 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 0.185529% 0.000000% 0.000000% 0.000000% 0.185529% 0.139652% 0.000000% 0.000000% 0.000000% 0.139652% 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 0.185529% 0.000000% 0.000000% 0.000000% 0.185529% 0.139652% 0.000000% 0.000000% 0.000000% 0.139652%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 131,607.86

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 13,511,990.73 2.70005470% 13,498,265.87 2.74420527% 97.254960% 100.000000% Class B-1 7,256,990.73 1.45013954% 7,249,619.41 1.47385182% 1.270740% 0.000000% Class B-2 4,253,990.73 0.85006036% 4,249,669.72 0.86396032% 0.610077% 0.000000% Class B-3 2,502,990.73 0.50016404% 2,500,448.31 0.50834259% 0.355726% 0.000000% Class B-4 1,501,990.73 0.30013765% 1,500,465.08 0.30504542% 0.203359% 0.000000% Class B-5 750,990.73 0.15006790% 750,227.91 0.15252177% 0.152570% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.152568% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description Fixed 30 Year Weighted Average Gross Coupon 6.068698% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation ) 354 Beginning Scheduled Collateral Loan Count 1,095 Number Of Loans Paid In Full 17 Ending Scheduled Collateral Loan Count 1,078 Beginning Scheduled Collateral Balance 500,433,961.88 Ending Scheduled Collateral Balance 491,882,514.07 Ending Actual Collateral Balance at 31-May-2003 479,765,105.28 Ending Scheduled Balance For Wells Fargo Serviced 483,646,807.61 Ending Scheduled Balance For Other Servicers 8,235,706.46 Monthly P &I Constant 2,918,000.88 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 10,768,508.80 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans 470,888,690.87 Ending scheduled Balance For discounted Loans 20,993,823.20 Scheduled Principal 508,354.99 Unscheduled Principal 8,043,092.82 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% 484,279,638.98 Greater Than 80%, less than or equal to 85% 1,481,000.67 Greater than 85%, less than or equal to 95% 5,745,315.68 Greater than 95% 382,649.08

Filing Compare · WELLS FARGO MORTGAGE BACK SECURITIES 2003-4 TRUST