8-K 1 wfm03004.txt DECEMBER 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 Form 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 26, 2003 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2003-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-98129-19 54-2120407 Pooling and Servicing Agreement) (Commission 54-2120406 (State or other File Number) IRS EIN jurisdiction of Incorporation) 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 December 26, 2003 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2003-4 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 2003-4 Trust, relating to the December 26, 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. WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2003-4 Trust By: Wells Fargo Bank Minnesota, N.A. as Master Servicer By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 1/2/04 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-4 Trust, relating to the December 26, 2003 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 911/30/03 Distribution Date: 1012/2726/03 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% ~~136~~135,~~159~~471.6842 0.00 ~~402~~293.3364 A-1 94978RAA9 SEN 4.00000% 67,~~972~~177,~~003~~832.4685 ~~226~~223,~~569~~920.6058 ~~383~~438,~~260~~405.9026 A-2 94978RAB7 SEN 5.50000% 10,000,000.00 45,832.5820 0.00 A-3 94978RAC5 SEN 5.50000% 155,~~277~~065,~~383~~295.9372 7023,~~020~~215.1937 62,~~444~~092,~~585~~829.2892 A-4 94978RAD3 SEN 5.50000% 12,949,000.00 59,348.6012 0.00 A-5 94978RAE1 SEN 5.50000% ~~147,810~~0.8500 ~~677~~0.4600 ~~147,810~~0.8500 A-6 94978RAF8 SEN 2.~~71000~~72000% ~~391,337~~0.5200 ~~883~~0.7600 ~~391,337~~0.5200 A-7 94978RAG6 SEN 15.~~73000~~69333% ~~106,728~~0.4200 ~~1,399~~0.0100 ~~106,728~~0.4200 A-8 94978RAH4 SEN 5.50000% 3,~~605~~349,~~908~~521.0942 1615,~~526~~351.8159 ~~161~~61,~~822~~230.1215 A-9 94978RAJ0 SEN 5.50000% 7571,~~848~~407,~~985~~386.8728 ~~347~~327,~~635~~275.4577 21,~~803~~060,~~379~~740.2692 A-10 94978RAK7 SEN 5.50000% 5,281,000.00 24,~~204~~203.1899 0.00 A-11 94978RAL5 SEN 5.50000% 4,918,000.00 22,540.4628 0.00 A-12 94978RAM3 SEN 5.50000% 16,919,000.00 77,~~544~~543.1450 0.00 A-13 94978RAN1 SEN 5.50000% 0.00 ~~142~~140,~~239~~576.3126 0.00 A-14 94978RAP6 SEN 5.50000% 2120,~~635~~097,~~448~~128.5453 9992,~~160~~109.8456 ~~970~~367,~~932~~380.7393 A-15 94978RAQ4 SEN 5.50000% 1,~~802~~674,~~954~~760.0571 87,~~263~~675.40 80 30,~~911~~615.0608 A-16 94978RAX9 SEN 5.50000% 5,264,000.00 24,126.2707 0.00 A-17 94978RAY7 SEN 4.50000% 6867,~~731~~928,~~982~~932.8276 ~~257~~254,~~740~~727.6820 ~~387~~443,~~546~~306.0697 A-18 94978RAZ4 SEN 5.50000% 73,589,000.00 337,~~277~~274.3558 0.00 A-R 94978RAS0 RES 5.50000% 0.00 0.00 0.00 A-LR 94978RAT8 RES 5.50000% 0.00 0.00 0.00 B-1 94978RAU5 SUB 5.50000% 6,~~230~~217,~~324~~373.3790 28,~~555~~495.1859 6,~~414~~617.9697 B-2 94978RAV3 SUB 5.50000% 2,~~991~~984,~~153~~935.3386 13,~~709~~680.2362 3,~~079~~177.8026 B-3 94978RAW1 SUB 5.50000% 1,~~744~~740,~~092~~467.4010 7,~~993~~976.6294 1,~~795~~852.7861 B-4 94978RBA8 SUB 5.50000% ~~997~~994,~~051~~978.1162 4,~~569~~560.7421 1,~~026~~059.6009 B-5 94978RBB6 SUB 5.50000% ~~748~~746,~~037~~482.3546 3,~~428~~421.4529 ~~770~~794.2158 B-6 94978RBC4 SUB 5.50000% ~~748~~746,~~028~~473.1226 3,~~428~~421.4125 ~~770~~794.1957 Totals ~~398~~379,~~035~~187,~~389~~040.9189 1,~~823~~737,~~674~~276.7277 114,~~892~~509,~~574~~098.0795

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 135,~~757~~177.3578 ~~402~~293.3364 0.00 A-1 0.00 6766,~~588~~739,~~742~~427.5659 ~~609~~662,~~830~~325.5084 0.00 A-2 0.00 10,000,000.00 45,832.5820 0.00 A-3 0.00 82,~~832~~972,~~798~~465.6579 62,~~514~~116,~~605~~045.4729 0.00 A-4 0.00 12,949,000.00 59,348.6012 0.00 A-5 0.00 0.00 ~~148,488~~0.3100 0.00 A-6 0.00 0.00 ~~392,221~~0.2800 0.00 A-7 0.00 0.00 ~~108,127~~0.4300 0.00 A-8 0.00 3,~~444~~288,~~085~~291.9727 ~~178~~76,~~348~~581.9374 0.00 A-9 0.00 7370,~~045~~346,~~606~~645.6036 31,~~151~~388,~~014~~016.7169 0.00 A-10 0.00 5,281,000.00 24,~~204~~203.1899 0.00 A-11 0.00 4,918,000.00 22,540.4628 0.00 A-12 0.00 16,919,000.00 77,~~544~~543.1450 0.00 A-13 0.00 0.00 ~~142~~140,~~239~~576.3126 0.00 A-14 0.00 2019,~~664~~729,~~515~~747.8160 1459,~~070,093~~490.5749 0.00 A-15 0.00 1,~~722~~644,~~042~~145.9863 8938,~~174~~290.4688 0.00 A-16 0.00 5,264,000.00 24,126.2707 0.00 A-17 0.00 6867,~~344~~485,~~436~~625.7679 ~~645~~698,~~286~~034.7417 0.00 A-18 0.00 73,589,000.00 337,~~277~~274.3558 0.00 A-R 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 B-1 0.00 6,~~223~~210,~~909~~755.4193 3435,~~970~~113.1456 0.00 B-2 0.00 2,~~988~~981,~~073~~758.5460 16,~~789~~857.0388 0.00 B-3 0.00 1,~~742~~738,~~296~~614.6249 9,~~789~~829.4055 0.00 B-4 0.00 ~~996~~993,~~024~~919.5153 5,~~596~~619.3430 0.00 B-5 0.00 ~~747~~745,~~267~~687.1488 4,~~198~~215.6687 0.00 B-6 0.00 ~~747~~745,~~257~~678.9369 4,~~198~~215.6082 0.00 Totals 0.00 ~~386~~374,~~142~~677,~~815~~941.8393 136,~~716~~246,~~248~~375.7972 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 ~~136~~135,~~159~~471.6842 ~~181~~183.2491 ~~221~~109.1072 0.00 0.00 A-1 69,226,000.00 67,~~972~~177,~~003~~832.4685 1237,~~771~~961.8138 ~~370~~400,~~489~~443.1087 0.00 0.00 A-2 10,000,000.00 10,000,000.00 0.00 0.00 0.00 0.00 A-3 15,580,000.00 155,~~277~~065,~~383~~295.9372 ~~214~~181,~~759~~217.6953 61,~~229~~911,~~825~~612.5939 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 ~~147,810~~0.8500 ~~4,925~~0.6600 ~~142,885~~0.2000 0.00 0.00 A-6 39,714,400.00 ~~391,337~~0.5200 ~~13,040~~0.9500 ~~378,296~~0.5700 0.00 0.00 A-7 10,831,200.00 ~~106,728~~0.4200 ~~3,556~~0.6200 ~~103,171~~0.7900 0.00 0.00 A-8 5,000,000.00 3,~~605~~349,~~908~~521.0942 5,~~392~~301.5790 ~~156~~55,~~429~~928.5525 0.00 0.00 A-9 100,000,000.00 7571,~~848~~407,~~985~~386.8728 9391,~~419~~849.9525 2968,~~709,959~~891.3168 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 2120,~~635~~097,~~448~~128.5453 3231,~~355~~811.41 ~~938~~335,~~577~~569.3252 0.00 0.00 A-15 2,500,000.00 1,~~802~~674,~~954~~760.0571 2,~~696~~650.2895 7827,~~214~~964.7813 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 6867,~~731~~928,~~982~~932.8276 1238,~~914~~385.6082 ~~374~~404,~~631~~921.4515 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 0.00 0.00 0.00 0.00 0.00 A-LR 50.00 0.00 0.00 0.00 0.00 0.00 B-1 6,255,000.00 6,~~230~~217,~~324~~373.3790 6,~~414~~617.9697 0.00 0.00 0.00 B-2 3,003,000.00 2,~~991~~984,~~153~~935.3386 3,~~079~~177.8026 0.00 0.00 0.00 B-3 1,751,000.00 1,~~744~~740,~~092~~467.4010 1,~~795~~852.7861 0.00 0.00 0.00 B-4 1,001,000.00 ~~997~~994,~~051~~978.1162 1,~~026~~059.6009 0.00 0.00 0.00 B-5 751,000.00 ~~748~~746,~~037~~482.3546 ~~770~~794.2158 0.00 0.00 0.00 B-6 750,990.73 ~~748~~746,~~028~~473.1226 ~~770~~794.1957 0.00 0.00 0.00 Totals 500,433,961.88 ~~398~~379,~~035~~187,~~389~~040.9189 ~~409~~403,~~872~~658.3223 114,~~482~~105,~~701~~440.7671 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 ~~402~~293.3364 135,~~757~~177.3578 0.~~90582711~~90195998 ~~402~~293.3364 A-1 ~~383~~438,~~260~~405.9026 6766,~~588~~739,~~742~~427.5659 0.~~97634910~~96408037 ~~383~~438,~~260~~405.9026 A-2 0.00 10,000,000.00 1.00000000 0.00 A-3 62,~~444~~092,~~585~~829.2892 82,~~832~~972,~~798~~465.6579 0.~~56693188~~19078728 62,~~444~~092,~~585~~829.2892 A-4 0.00 12,949,000.00 1.00000000 0.00 A-5 ~~147,810~~0.8500 0.00 0.00000000 ~~147,810~~0.8500 A-6 ~~391,337~~0.5200 0.00 0.00000000 ~~391,337~~0.5200 A-7 ~~106,728~~0.4200 0.00 0.00000000 ~~106,728~~0.4200 A-8 ~~161~~61,~~822~~230.1215 3,~~444~~288,~~085~~291.9727 0.~~68881719~~65765825 ~~161~~61,~~822~~230.1215 A-9 21,~~803~~060,~~379~~740.2692 7370,~~045~~346,~~606~~645.6036 0.~~73045607~~70346645 21,~~803~~060,~~379~~740.2692 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 ~~970~~367,~~932~~380.7393 2019,~~664~~729,~~515~~747.8160 0.~~68881719~~65765825 ~~970~~367,~~932~~380.7393 A-15 8030,~~911~~615.0608 1,~~722~~644,~~042~~145.9863 0.~~68881719~~65765825 8030,~~911~~615.0608 A-16 0.00 5,264,000.00 1.00000000 0.00 A-17 ~~387~~443,~~546~~306.0697 6867,~~344~~485,~~436~~625.7679 0.~~97634910~~96408037 ~~387~~443,~~546~~306.0697 A-18 0.00 73,589,000.00 1.00000000 0.00 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 B-1 6,~~414~~617.9697 6,~~223~~210,~~909~~755.4193 0.~~99502948~~99292661 6,~~414~~617.9697 B-2 3,~~079~~177.8026 2,~~988~~981,~~073~~758.5460 0.~~99502948~~99292661 3,~~079~~177.8026 B-3 1,~~795~~852.7861 1,~~742~~738,~~296~~614.6249 0.~~99502948~~99292661 1,~~795~~852.7861 B-4 1,~~026~~059.6009 ~~996~~993,~~024~~919.5153 0.~~99502948~~99292660 1,~~026~~059.6009 B-5 ~~770~~794.2158 ~~747~~745,~~267~~687.1488 0.~~99502948~~99292660 ~~770~~794.2158 B-6 ~~770~~794.1957 ~~747~~745,~~257~~678.9369 0.~~99502950~~99292662 ~~770~~794.1957 Totals 114,~~892~~509,~~574~~098.0795 ~~386~~374,~~142~~677,~~815~~941.8393 0.~~77161593~~74870606 114,~~892~~509,~~574~~098.0795

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 149,871.15 ~~908~~903.~~51161147~~91926665 1.~~20930546~~22712076 10.~~47526725~~73209554 0.00000000 A-1 69,226,000.00 ~~981~~970.~~88546875~~41332520 0.~~18449441~~54836882 5.~~35187791~~78458773 0.00000000 A-2 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 15,580,000.00 ~~980~~325.~~57663222~~11525802 1311.~~78431900~~63142041 ~~399~~122.~~86043582~~69655905 0.00000000 A-4 12,949,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 15,000,400.00 90.~~85379390~~00000000 0.~~32836858~~00000000 90.~~52542599~~00000000 0.00000000 A-6 39,714,400.00 90.~~85379409~~00000000 0.~~32836830~~00000000 90.~~52542579~~00000000 0.00000000 A-7 10,831,200.00 90.~~85379459~~00000000 0.~~32836805~~00000000 90.~~52542562~~00000000 0.00000000 A-8 5,000,000.00 ~~721~~669.~~18161800~~90428400 1.~~07851400~~06038000 3111.~~28591000~~18565000 0.00000000 A-9 100,000,000.00 ~~758~~714.~~48985870~~07386280 0.~~93419950~~91849250 279.~~09959310~~68891680 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 ~~721~~669.~~18161800~~90428433 1.~~07851367~~06038033 3111.~~28591067~~18565067 0.00000000 A-15 2,500,000.00 ~~721~~669.~~18162000~~90428400 1.~~07851200~~06038000 3111.~~28591200~~18565200 0.00000000 A-16 5,264,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-17 70,000,000.00 ~~981~~970.~~88546886~~41332514 0.~~18449429~~54836886 5.~~35187786~~78458786 0.00000000 A-18 73,589,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-R 50.00 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 6,255,000.00 ~~996~~993.~~05505516~~98463629 1.~~02557314~~05802878 0.00000000 0.00000000 B-2 3,003,000.00 ~~996~~993.~~05505495~~98463536 1.~~02557443~~05802864 0.00000000 0.00000000 B-3 1,751,000.00 ~~996~~993.~~05505425~~98463735 1.~~02557396~~05802970 0.00000000 0.00000000 B-4 1,001,000.00 ~~996~~993.~~05505495~~98463536 1.~~02557443~~05803197 0.00000000 0.00000000 B-5 751,000.00 ~~996~~993.~~05505992~~98463382 1.~~02557923~~05802929 0.00000000 0.00000000 B-6 750,990.73 ~~996~~993.~~05506449~~98465278 1.~~02556526~~05802904 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 21.~~68450599~~95928302 ~~905~~901.~~82710548~~95998363 0.~~90582711~~90195998 21.~~68450599~~95928302 A-1 0.00000000 56.~~53637217~~33295669 ~~976~~964.~~34909658~~08036850 0.~~97634910~~96408037 56.~~53637217~~33295669 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 ~~413~~134.~~64475481~~32797946 ~~566~~190.~~93187741~~78727792 0.~~56693188~~19078728 ~~413~~134.~~64475481~~32797946 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 90.~~85379390~~00000000 0.00000000 0.00000000 90.~~85379390~~00000000 A-6 0.00000000 90.~~85379409~~00000000 0.00000000 0.00000000 90.~~85379409~~00000000 A-7 0.00000000 90.~~85379459~~00000000 0.00000000 0.00000000 90.~~85379459~~00000000 A-8 0.00000000 3212.~~36442400~~24603000 ~~688~~657.~~81719400~~65825400 0.~~68881719~~65765825 3212.~~36442400~~24603000 A-9 0.00000000 2810.~~03379260~~60740920 ~~730~~703.~~45606600~~46645360 0.~~73045607~~70346645 2810.~~03379260~~60740920 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 3212.~~36442433~~24603100 ~~688~~657.~~81719367~~65825333 0.~~68881719~~65765825 3212.~~36442433~~24603100 A-15 0.00000000 3212.~~36442400~~24603200 ~~688~~657.~~81719200~~65825200 0.~~68881719~~65765825 3212.~~36442400~~24603200 A-16 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-17 0.00000000 56.~~53637229~~33295671 ~~976~~964.~~34909657~~08036843 0.~~97634910~~96408037 56.~~53637229~~33295671 A-18 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 1.~~02557314~~05802878 ~~995~~992.~~02948201~~92660751 0.~~99502948~~99292661 1.~~02557314~~05802878 B-2 0.00000000 1.~~02557443~~05802864 ~~995~~992.~~02948385~~92660673 0.~~99502948~~99292661 1.~~02557443~~05802864 B-3 0.00000000 1.~~02557396~~05802970 ~~995~~992.~~02948030~~92660765 0.~~99502948~~99292661 1.~~02557396~~05802970 B-4 0.00000000 1.~~02557443~~05803197 ~~995~~992.~~02948052~~92660340 0.~~99502948~~99292660 1.~~02557443~~05803197 B-5 0.00000000 1.~~02557923~~05802929 ~~995~~992.~~02948069~~92660453 0.~~99502948~~99292660 1.~~02557923~~05802929 B-6 0.00000000 1.~~02556526~~05802904 ~~995~~992.~~02949923~~92662374 0.~~99502950~~99292662 1.~~02556526~~05802904 (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 A-PO 149,871.15 0.00000% ~~136~~135,~~159~~471.6842 0.00 0.00 0.00 A-1 69,226,000.00 4.00000% 67,~~972~~177,~~003~~832.4685 ~~226~~223,~~573~~926.3411 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% 155,~~277~~065,~~383~~295.9372 7023,~~021~~215.3494 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% ~~147,810~~0.8500 ~~677~~0.4700 0.00 0.00 A-6 39,714,400.00 2.~~71000~~72000% ~~391,337~~0.5200 ~~883~~0.7700 0.00 0.00 A-7 10,831,200.00 15.~~73000~~69333% ~~106,728~~0.4200 ~~1,399~~0.0300 0.00 0.00 A-8 5,000,000.00 5.50000% 3,~~605~~349,~~908~~521.0942 1615,~~527~~351.0897 0.00 0.00 A-9 100,000,000.00 5.50000% 7571,~~848~~407,~~985~~386.8728 ~~347~~327,~~641~~283.1985 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% 3130,~~034~~671,~~543~~942.2819 ~~142~~140,~~241~~579.6674 0.00 0.00 A-14 30,000,000.00 5.50000% 2120,~~635~~097,~~448~~128.5453 9992,~~162~~111.4784 0.00 0.00 A-15 2,500,000.00 5.50000% 1,~~802~~674,~~954~~760.0571 87,~~263~~675.5499 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% 6867,~~731~~928,~~982~~932.8276 ~~257~~254,~~744~~733.9450 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% 0.00 0.00 0.00 0.00 A-LR 50.00 5.50000% 0.00 0.00 0.00 0.00 B-1 6,255,000.00 5.50000% 6,~~230~~217,~~324~~373.3790 28,~~555~~496.6530 0.00 0.00 B-2 3,003,000.00 5.50000% 2,~~991~~984,~~153~~935.3386 13,~~709~~680.4596 0.00 0.00 B-3 1,751,000.00 5.50000% 1,~~744~~740,~~092~~467.4010 7,~~993~~977.7614 0.00 0.00 B-4 1,001,000.00 5.50000% ~~997~~994,~~051~~978.1162 4,~~569~~560.8232 0.00 0.00 B-5 751,000.00 5.50000% ~~748~~746,~~037~~482.3546 3,~~428~~421.5038 0.00 0.00 B-6 750,990.73 5.50000% ~~748~~746,~~028~~473.1226 3,~~428~~421.4634 0.00 0.00 Totals 500,433,961.88 1,~~823~~737,~~704~~319.8071 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 0.00 135,~~757~~177.3578 A-1 35.7453 0.00 ~~226~~223,~~569~~920.6058 0.00 6766,~~588~~739,~~742~~427.5659 A-2 01.7613 0.00 45,832.5820 0.00 10,000,000.00 A-3 10.1657 0.00 7023,~~020~~215.1937 0.00 82,~~832~~972,~~798~~465.6579 A-4 01.9847 0.00 59,348.6012 0.00 12,949,000.00 A-5 0.0100 0.00 ~~677~~0.4600 0.00 0.00 A-6 0.0100 0.00 ~~883~~0.7600 0.00 0.00 A-7 0.0200 0.00 ~~1,399~~0.0100 0.00 0.00 A-8 0.2738 0.00 1615,~~526~~351.8159 0.00 3,~~444~~288,~~085~~291.9727 A-9 58.7409 0.00 ~~347~~327,~~635~~275.4577 0.00 7370,~~045~~346,~~606~~645.6036 A-10 0.4060 0.00 24,~~204~~203.1899 0.00 5,281,000.00 A-11 0.3756 0.00 22,540.4628 0.00 4,918,000.00 A-12 1.2892 0.00 77,~~544~~543.1450 0.00 16,919,000.00 A-13 23.3547 0.00 ~~142~~140,~~239~~576.3126 0.00 30,~~859~~471,~~554~~775.6585 A-14 12.6428 0.00 9992,~~160~~109.8456 0.00 2019,~~664~~729,~~515~~747.8160 A-15 0.1419 0.00 87,~~263~~675.4080 0.00 1,~~722~~644,~~042~~145.9863 A-16 0.4060 0.00 24,126.2707 0.00 5,264,000.00 A-17 46.2529 0.00 ~~257~~254,~~740~~727.6820 0.00 6867,~~344~~485,~~436~~625.7679 A-18 58.5733 0.00 337,~~277~~274.3558 0.00 73,589,000.00 A-R 0.00 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 B-1 0.4770 0.00 28,~~555~~495.1859 0.00 6,~~223~~210,~~909~~755.4193 B-2 0.2334 0.00 13,~~709~~680.2362 0.00 2,~~988~~981,~~073~~758.5460 B-3 0.1320 0.00 7,~~993~~976.6294 0.00 1,~~742~~738,~~296~~614.6249 B-4 0.0811 0.00 4,~~569~~560.7421 0.00 ~~996~~993,~~024~~919.5153 B-5 0.0608 0.00 3,~~428~~421.4529 0.00 ~~747~~745,~~267~~687.1488 B-6 0.0608 0.00 3,~~428~~421.4125 0.00 ~~747~~745,~~257~~678.9369 Totals 3042.1292 0.00 1,~~823~~737,~~674~~276.7277 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 A-PO 149,871.15 0.00000% ~~908~~903.~~51161147~~91926665 0.00000000 0.00000000 0.00000000 A-1 69,226,000.00 4.00000% ~~981~~970.~~88546875~~41332520 3.~~27295149~~23471109 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% ~~980~~325.~~57663222~~11525802 41.~~49430937~~49011168 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% 90.~~85379390~~00000000 0.~~04516346~~00000000 0.00000000 0.00000000 A-6 39,714,400.00 2.~~71000~~72000% 90.~~85379409~~00000000 0.~~02225314~~00000000 0.00000000 0.00000000 A-7 10,831,200.00 15.~~73000~~69333% 90.~~85379459~~00000000 0.~~12916667~~00000000 0.00000000 0.00000000 A-8 5,000,000.00 5.50000% ~~721~~669.~~18161800~~90428400 3.~~30541600~~07039400 0.00000000 0.00000000 A-9 100,000,000.00 5.50000% ~~758~~714.~~48985870~~07386280 3.~~47641190~~27283850 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% ~~981~~970.~~88549721~~41335314 4.~~50030863~~44772803 0.00000000 0.00000000 A-14 30,000,000.00 5.50000% ~~721~~669.~~18161800~~90428433 3.~~30541567~~07039467 0.00000000 0.00000000 A-15 2,500,000.00 5.50000% ~~721~~669.~~18162000~~90428400 3.~~30541600~~07039600 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% ~~981~~970.~~88546886~~41332514 3.~~68207057~~63905000 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% 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 5.50000% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 6,255,000.00 5.50000% ~~996~~993.~~05505516~~98463629 4.~~56525180~~55576339 0.00000000 0.00000000 B-2 3,003,000.00 5.50000% ~~996~~993.~~05505495~~98463536 4.~~56525142~~55576424 0.00000000 0.00000000 B-3 1,751,000.00 5.50000% ~~996~~993.~~05505425~~98463735 4.~~56525414~~55576242 0.00000000 0.00000000 B-4 1,001,000.00 5.50000% ~~996~~993.~~05505495~~98463536 4.~~56525475~~55576424 0.00000000 0.00000000 B-5 751,000.00 5.50000% ~~996~~993.~~05505992~~98463382 4.~~56524634~~55576565 0.00000000 0.00000000 B-6 750,990.73 5.50000% ~~996~~993.~~05506449~~98465278 4.~~56524943~~55576862 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 ~~905~~901.~~82710548~~95998363 A-1 0.~~00005403~~00007988 0.00000000 3.~~27289747~~23463121 0.00000000 ~~976~~964.~~34909658~~08036850 A-2 0.~~00007600~~00011300 0.00000000 4.~~58325800~~58322000 0.00000000 1000.00000000 A-3 0.~~00007445~~00003659 0.00000000 41.~~49423556~~49007510 0.00000000 ~~566~~190.~~93187741~~78727792 A-4 0.~~00007568~~00011352 0.00000000 4.~~58325739~~58322033 0.00000000 1000.00000000 A-5 0.~~00000067~~00000000 0.00000000 0.~~04516280~~00000000 0.00000000 0.00000000 A-6 0.~~00000025~~00000000 0.00000000 0.~~02225289~~00000000 0.00000000 0.00000000 A-7 0.~~00000185~~00000000 0.00000000 0.~~12916482~~00000000 0.00000000 0.00000000 A-8 0.~~00005400~~00007600 0.00000000 3.~~30536200~~07031800 0.00000000 ~~688~~657.~~81719400~~65825400 A-9 0.~~00005740~~00008090 0.00000000 3.~~47635450~~27275770 0.00000000 ~~730~~703.~~45606600~~46645360 A-10 0.~~00007574~~00011361 0.00000000 4.~~58325696~~58322098 0.00000000 1000.00000000 A-11 0.~~00007523~~00011387 0.00000000 4.~~58325742~~58322082 0.00000000 1000.00000000 A-12 0.~~00007565~~00011348 0.00000000 4.~~58325788~~58322005 0.00000000 1000.00000000 A-13 0.~~00007435~~00010979 0.00000000 4.~~50023428~~44761792 0.00000000 ~~976~~964.~~34912452~~08039620 A-14 0.~~00005467~~00007600 0.00000000 3.~~30536133~~07031867 0.00000000 ~~688~~657.~~81719367~~65825333 A-15 0.~~00005600~~00007600 0.00000000 3.~~30536000~~07032000 0.00000000 ~~688~~657.~~81719200~~65825200 A-16 0.~~00007599~~00011398 0.00000000 4.~~58325798~~58321998 0.00000000 1000.00000000 A-17 0.~~00006071~~00008986 0.00000000 3.~~68200971~~63896000 0.00000000 ~~976~~964.~~34909657~~08036843 A-18 0.~~00007569~~00011320 0.00000000 4.~~58325769~~58322005 0.00000000 1000.00000000 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.~~00007514~~00011191 0.00000000 4.~~56517666~~55564988 0.00000000 ~~995~~992.~~02948201~~92660751 B-2 0.~~00007659~~00011322 0.00000000 4.~~56517816~~55565102 0.00000000 ~~995~~992.~~02948385~~92660673 B-3 0.~~00007424~~00011422 0.00000000 4.~~56517419~~55564820 0.00000000 ~~995~~992.~~02948030~~92660765 B-4 0.~~00007992~~00010989 0.00000000 4.~~56517483~~55565435 0.00000000 ~~995~~992.~~02948052~~92660340 B-5 0.~~00007989~~00010652 0.00000000 4.~~56517976~~55564581 0.00000000 ~~995~~992.~~02948069~~92660453 B-6 0.~~00007989~~00010653 0.00000000 4.~~56518285~~55564878 0.00000000 ~~995~~992.~~02949923~~92662374 (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 ~~3,242~~0.9800 Deposits Payments of Interest and Principal 136,~~774~~553,~~934~~760.9657 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) ~~13,586~~0.0600 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 136,~~788~~553,~~521~~760.0257 Withdrawals Reimbursement for Servicer Advances 0216,617.0091 Payment of Service Fee 7580,~~515~~719.2573 Payment of Interest and Principal 136,~~716~~246,~~248~~375.7870 Total Withdrawals (Pool Distribution Amount) 136,~~791~~543,~~764~~713.0334 Ending Balance 010,047.0024

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 101,~~753~~479.5713 Servicing Fee Support 101,~~723~~436.4521 Non-Supported Prepayment/Curtailment Interest Shortfall 3042.1292

SERVICING FEES Gross Servicing Fee 8278,~~921~~996.8309 Master Servicing Fee 3,~~316~~159.8784 Supported Prepayment/Curtailment Interest Shortfall 101,~~723~~436.4521 Net Servicing Fee 7580,~~515~~719.2573

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 01 0 0 0 01 0266,540.0033 0.00 0.00 0.00 0266,540.0033 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 01 0 0 0 01 0266,540.0033 0.00 0.00 0.00 0266,540.0033 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.~~000000~~119904% 0.000000% 0.000000% 0.000000% 0.~~000000~~119904% 0.~~000000~~070520% 0.000000% 0.000000% 0.000000% 0.~~000000~~070520% 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.~~000000~~119904% 0.000000% 0.000000% 0.000000% 0.~~000000~~119904% 0.~~000000~~070520% 0.000000% 0.000000% 0.000000% 0.~~000000~~070520%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~141~~124,~~270~~316.5168

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 13,511,990.73 2.70005470% 13,~~444~~416,~~829~~415.1512 3.~~48182812~~58078595% 96.~~516947~~417922% 100.000000% Class B-1 7,256,990.73 1.45013954% 7,~~220~~205,~~919~~659.7419 1.~~87001271~~92316077% 1.~~612382~~658223% 0.000000% Class B-2 4,253,990.73 0.85006036% 4,~~232~~223,~~846~~900.2059 1.~~09618670~~12734168% 0.~~774098~~796106% 0.000000% Class B-3 2,502,990.73 0.50016404% 2,~~490~~485,~~549~~286.5810 0.~~64498146~~66331263% 0.~~451364~~464197% 0.000000% Class B-4 1,501,990.73 0.30013765% 1,~~494~~491,~~525~~366.0757 0.~~38703946~~39803960% 0.~~258033~~265369% 0.000000% Class B-5 750,990.73 0.15006790% ~~747~~745,~~257~~678.9369 0.~~19351854~~19901857% 0.~~193589~~199093% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~193587~~199090% 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.~~046789~~042165% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation ) ~~350~~348 Beginning Scheduled Collateral Loan Count ~~885~~845 Number Of Loans Paid In Full 2411 Ending Scheduled Collateral Loan Count ~~861~~834 Beginning Scheduled Collateral Balance ~~398~~379,~~035~~187,~~389~~040.9290 Ending Scheduled Collateral Balance ~~386~~374,~~142~~677,~~815~~941.8497 Ending Actual Collateral Balance at 30-~~Sep~~Nov-2003 ~~384~~377,~~066~~963,~~987~~441.6306 Ending Scheduled Balance For Wells Fargo Serviced ~~378~~367,~~596~~665,~~044~~577.5551 Ending Scheduled Balance For Other Servicers 7,~~546~~012,~~771~~364.2946 Monthly P &I Constant 2,~~331~~227,~~547~~416.9485 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 136,~~640~~170,~~333~~271.3650 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~366~~354,~~157~~753,~~248~~300.8153 Ending scheduled Balance For discounted Loans 19,~~985~~924,~~567~~641.0344 Scheduled Principal ~~409~~403,~~872~~658.3322 Unscheduled Principal 114,~~482~~105,~~701~~440.7571 Unpaid Principal Balance Of Outstanding Mortgage Loans With Or Less Than Or Equal To 80% ~~379~~368,~~151~~045,~~636~~887.8665 Greater Than 80%, less than or equal to 85% 1,~~475~~126,~~138~~006.2151 Greater than 85%, less than or equal to 95% 5,~~146~~133,~~568~~346.9700 Greater than 95% 380,~~906~~021.4195

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