8-K 1 wfm03004_oct.txt OCTOBER 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): October 27, 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 54-2120406 Pooling and Servicing Agreement) (Commission 54-2120407 (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 October 27, 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 October 27, 2003 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. 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, Assistant Vice President By: Beth Belfield, Assistant Vice President Date: 10/28/03 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 October 27, 2003 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 89/3130/03 Distribution Date: 910/2527/03 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,~~351~~159.4068 0.00 ~~191~~402.7233 A-1 94978RAA9 SEN 4.00000% 6867,~~327~~972,~~476~~003.7546 ~~227~~226,~~749~~569.2060 ~~355~~383,~~473~~260.2990 A-2 94978RAB7 SEN 5.50000% 10,000,000.00 45,~~831~~832.5158 0.00 A-3 94978RAC5 SEN 5.50000% 15,~~373~~277,~~623~~383.6093 70,~~459~~020.6419 966,~~239~~444,585.6728 A-4 94978RAD3 SEN 5.50000% 12,949,000.00 59,~~347~~348.2260 0.00 A-5 94978RAE1 SEN 5.50000% 4147,~~543,278~~810.4285 ~~20,822~~677.5346 4147,~~395,467~~810.5685 A-6 94978RAF8 SEN 2.~~70000~~71000% 12391,~~028,584~~337.3352 ~~27,063~~883.2476 11391,~~637,246~~337.8152 A-7 94978RAG6 SEN 15.~~76667~~73000% 3106,~~280,523~~728.0042 431,~~100~~399.7101 3106,~~173,794~~728.5842 A-8 94978RAH4 SEN 5.50000% 43,~~017~~605,~~966~~908.4709 1816,~~414~~526.9581 ~~412~~161,~~058~~822.3812 A-9 94978RAJ0 SEN 5.50000% 8275,~~987~~848,~~416~~985.0387 ~~380~~347,~~343~~635.8745 72,~~138~~803,~~430~~379.1726 A-10 94978RAK7 SEN 5.50000% 5,281,000.00 24,~~203~~204.6218 0.00 A-11 94978RAL5 SEN 5.50000% 4,918,000.00 22,~~539~~540.9446 0.00 A-12 94978RAM3 SEN 5.50000% 16,919,000.00 77,~~542~~544.3314 0.00 A-13 94978RAN1 SEN 5.50000% 0.00 142,~~979~~239.8631 0.00 A-14 94978RAP6 SEN 5.50000% 2421,~~107~~635,~~798~~448.8254 ~~110~~99,~~489~~160.6984 2970,~~472,350~~932.2873 A-15 94978RAQ4 SEN 5.50000% 21,~~008~~802,~~983~~954.2305 98,~~207~~263.4740 ~~206~~80,~~029~~911.1906 A-16 94978RAX9 SEN 5.50000% 5,264,000.00 24,~~125~~126.7127 0.00 A-17 94978RAY7 SEN 4.50000% 6968,~~091~~731,~~430~~982.5782 ~~259~~257,~~082~~740.5768 ~~359~~387,~~447~~546.7506 A-18 94978RAZ4 SEN 5.50000% 73,589,000.00 337,~~269~~277.5135 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,~~236~~230,~~426~~324.4437 28,~~582~~555.4918 6,~~102~~414.0796 B-2 94978RAV3 SUB 5.50000% 2,~~994~~991,~~082~~153.9133 13,~~722~~709.3323 23,~~929~~079.5880 B-3 94978RAW1 SUB 5.50000% 1,~~745~~744,~~800~~092.5940 87,~~001~~993.2762 1,~~708~~795.1978 B-4 94978RBA8 SUB 5.50000% ~~998~~997,~~027~~051.6411 4,~~574~~569.1174 ~~976~~1,026.5360 B-5 94978RBB6 SUB 5.50000% 748,~~769~~037.9835 3,~~431~~428.7345 ~~732~~770.6421 B-6 94978RBC4 SUB 5.50000% 748,~~760~~028.7412 3,~~431~~428.6841 ~~732~~770.6319 Totals ~~428~~398,~~295~~035,~~300~~389.9291 1,~~962~~823,~~317~~674.1872 3011,~~259~~892,~~911~~574.0407

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 ~~136~~135,~~159~~757.6835 ~~191~~402.7233 0.00 A-1 0.00 67,~~972~~588,~~003~~742.4656 ~~583~~609,~~222~~830.4950 0.00 A-2 0.00 10,000,000.00 45,~~831~~832.5158 0.00 A-3 0.00 158,~~277~~832,~~383~~798.9365 ~~166~~6,~~699~~514,605.3147 0.00 A-4 0.00 12,949,000.00 59,~~347~~348.2260 0.00 A-5 0.00 ~~147,810~~0.8500 4148,~~416,290~~488.0931 0.00 A-6 0.00 ~~391,337~~0.5200 11392,~~664,310~~221.0528 0.00 A-7 0.00 ~~106,728~~0.4200 3108,~~216,895~~127.2943 0.00 A-8 0.00 3,~~605~~444,~~908~~085.0997 ~~430~~178,~~473~~348.3393 0.00 A-9 0.00 7573,~~848~~045,~~985~~606.8760 73,~~518~~151,~~774~~014.0471 0.00 A-10 0.00 5,281,000.00 24,~~203~~204.6218 0.00 A-11 0.00 4,918,000.00 22,~~539~~540.9446 0.00 A-12 0.00 16,919,000.00 77,~~542~~544.3314 0.00 A-13 0.00 0.00 142,~~979~~239.8631 0.00 A-14 0.00 2120,~~635~~664,~~448~~515.5481 21,~~582~~070,~~839~~093.9757 0.00 A-15 0.00 1,~~802~~722,~~954~~042.0598 ~~215~~89,~~236~~174.6646 0.00 A-16 0.00 5,264,000.00 24,~~125~~126.7127 0.00 A-17 0.00 68,~~731~~344,~~982~~436.8276 ~~618~~645,~~530~~286.3274 0.00 A-18 0.00 73,589,000.00 337,~~269~~277.5135 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,~~230~~223,~~324~~909.3741 34,~~684~~970.5614 0.00 B-2 0.00 2,~~991~~988,~~153~~073.3354 16,~~651~~789.9103 0.00 B-3 0.00 1,~~744~~742,~~092~~296.4062 9,~~709~~789.4640 0.00 B-4 0.00 ~~997~~996,~~051~~024.1151 5,~~550~~596.6434 0.00 B-5 0.00 ~~748~~747,~~037~~267.3514 4,~~164~~198.3766 0.00 B-6 0.00 ~~748~~747,~~028~~257.1293 4,~~164~~198.3160 0.00 Totals 0.00 ~~398~~386,~~035~~142,~~389~~815.9183 3213,~~222~~716,~~228~~248.2279 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,~~351~~159.4068 ~~179~~181.7924 11221.9310 0.00 0.00 A-1 69,226,000.00 6867,~~327~~972,~~476~~003.7546 412,~~768~~771.6281 ~~350~~370,~~704~~489.6610 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,~~373~~277,~~623~~383.6093 1214,~~291~~759.0469 946,~~948~~229,825.6359 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 4147,~~543,278~~810.4285 584,~~964~~925.5566 4142,~~336,503~~885.0120 0.00 0.00 A-6 39,714,400.00 12391,~~028,584~~337.3352 ~~156~~13,~~111~~040.95 11378,~~481,134~~296.8657 0.00 0.00 A-7 10,831,200.00 3106,~~280,523~~728.00 42 3,~~575~~556.9962 3103,~~131,218~~171.6079 0.00 0.00 A-8 5,000,000.00 43,~~017~~605,~~966~~908.4709 5,~~527~~392.7057 ~~406~~156,~~530~~429.6855 0.00 0.00 A-9 100,000,000.00 8275,~~987~~848,~~416~~985.0387 9593,~~760~~419.9995 72,~~042~~709,~~669~~959.1831 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 2421,~~107~~635,~~798~~448.8254 3332,~~166~~355.2141 2938,~~439,184~~577.0632 0.00 0.00 A-15 2,500,000.00 21,~~008~~802,~~983~~954.2305 2,~~763~~696.8528 ~~203~~78,~~265~~214.3478 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 6968,~~091~~731,~~430~~982.5782 412,~~821~~914.9460 ~~354~~374,~~625~~631.8145 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,~~236~~230,~~426~~324.4437 6,~~102~~414.0796 0.00 0.00 0.00 B-2 3,003,000.00 2,~~994~~991,~~082~~153.9133 23,~~929~~079.5880 0.00 0.00 0.00 B-3 1,751,000.00 1,~~745~~744,~~800~~092.5940 1,~~708~~795.1978 0.00 0.00 0.00 B-4 1,001,000.00 ~~998~~997,~~027~~051.6411 ~~976~~1,026.5360 0.00 0.00 0.00 B-5 751,000.00 748,~~769~~037.9835 ~~732~~770.6421 0.00 0.00 0.00 B-6 750,990.73 748,~~760~~028.7412 ~~732~~770.6319 0.00 0.00 0.00 Totals 500,433,961.88 ~~428~~398,~~295~~035,~~300~~389.9291 ~~419~~409,~~114~~872.2732 2911,~~840~~482,~~796~~701.76 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 ~~191~~402.7233 ~~136~~135,~~159~~757.6835 0.~~90851161~~90582711 ~~191~~402.7233 A-1 ~~355~~383,~~473~~260.2990 67,~~972~~588,~~003~~742.4656 0.~~98188547~~97634910 ~~355~~383,~~473~~260.2990 A-2 0.00 10,000,000.00 1.00000000 0.00 A-3 966,~~239~~444,585.6728 158,~~277~~832,~~383~~798.9365 0.~~98057663~~56693188 966,~~239~~444,585.6728 A-4 0.00 12,949,000.00 1.00000000 0.00 A-5 ~~4,395,467.56~~ 147,810.85 0.~~00985379~~00 40.00000000 147,~~395,467~~810.5685 A-6 ~~11,637,246.81~~ 391,337.52 0.~~00985379~~00 110.00000000 391,~~637,246~~337.8152 A-7 ~~3,173,794.58~~ 106,728.42 0.~~00985379~~00 30.00000000 106,~~173,794~~728.5842 A-8 ~~412~~161,~~058~~822.3812 3,~~605~~444,~~908~~085.0997 0.~~72118162~~68881719 ~~412~~161,~~058~~822.3812 A-9 72,~~138~~803,~~430~~379.1726 7573,~~848~~045,~~985~~606.8760 0.~~75848986~~73045607 72,~~138~~803,~~430~~379.1726 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 2970,~~472,350~~932.2873 2120,~~635~~664,~~448~~515.5481 0.~~72118162~~68881719 2970,~~472,350~~932.2873 A-15 ~~206~~80,~~029~~911.1906 1,~~802~~722,~~954~~042.0598 0.~~72118162~~68881719 ~~206~~80,~~029~~911.1906 A-16 0.00 5,264,000.00 1.00000000 0.00 A-17 ~~359~~387,~~447~~546.7506 68,~~731~~344,~~982~~436.8276 0.~~98188547~~97634910 ~~359~~387,~~447~~546.7506 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,~~102~~414.0796 6,~~230~~223,~~324~~909.3741 0.~~99605506~~99502948 6,~~102~~414.0796 B-2 23,~~929~~079.5880 2,~~991~~988,~~153~~073.3354 0.~~99605505~~99502948 23,~~929~~079.5880 B-3 1,~~708~~795.1978 1,~~744~~742,~~092~~296.4062 0.~~99605505~~99502948 1,~~708~~795.1978 B-4 ~~976~~1,026.5360 ~~997~~996,~~051~~024.1151 0.~~99605505~~99502948 ~~976~~1,026.5360 B-5 ~~732~~770.6421 ~~748~~747,~~037~~267.3514 0.~~99605506~~99502948 ~~732~~770.6421 B-6 ~~732~~770.6319 ~~748~~747,~~028~~257.1293 0.~~99605506~~99502950 ~~732~~770.6319 Totals 3011,~~259~~892,~~911~~574.0407 ~~398~~386,~~035~~142,~~389~~815.9183 0.~~79538045~~77161593 3011,~~259~~892,~~911~~574.0407

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 149,871.15 ~~909~~908.~~79084367~~51161147 1.~~19963048~~20930546 01.~~07960171~~47526725 0.00000000 A-1 69,226,000.00 ~~987~~981.~~02043669~~88546875 0.~~06888481~~18449441 5.~~06608297~~35187791 0.00000000 A-2 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 15,580,000.00 ~~986~~980.~~75376123~~57663222 013.~~08286521~~78431900 6399.~~09426380~~86043582 0.00000000 A-4 12,949,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 15,000,400.00 ~~302~~9.~~87715128~~85379390 30.~~93086518~~32836858 ~~289~~9.~~09249153~~52542599 0.00000000 A-6 39,714,400.00 ~~302~~9.~~87715111~~85379409 30.~~93086513~~32836830 ~~289~~9.~~09249189~~52542579 0.00000000 A-7 10,831,200.00 ~~302~~9.~~87715119~~85379459 30.~~93086546~~32836805 ~~289~~9.~~09249206~~52542562 0.00000000 A-8 5,000,000.00 ~~803~~721.~~59329400~~18161800 1.~~10554000~~07851400 8131.~~30613600~~28591000 0.00000000 A-9 100,000,000.00 ~~829~~758.~~87416030~~48985870 0.~~95760990~~93419950 7027.~~42669180~~09959310 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 ~~803~~721.~~59329400~~18161800 1.~~10554033~~07851367 8131.~~30613533~~28591067 0.00000000 A-15 2,500,000.00 ~~803~~721.~~59329200~~18162000 1.~~10554000~~07851200 8131.~~30613600~~28591200 0.00000000 A-16 5,264,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-17 70,000,000.00 ~~987~~981.~~02043671~~88546886 0.~~06888486~~18449429 5.~~06608300~~35187786 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 ~~997~~996.~~03060592~~05505516 01.~~97555076~~02557314 0.00000000 0.00000000 B-2 3,003,000.00 ~~997~~996.~~03060606~~05505495 01.~~97555112~~02557443 0.00000000 0.00000000 B-3 1,751,000.00 ~~997~~996.~~03060537~~05505425 01.~~97555111~~02557396 0.00000000 0.00000000 B-4 1,001,000.00 ~~997~~996.~~03060939~~05505495 01.~~97555445~~02557443 0.00000000 0.00000000 B-5 751,000.00 ~~997~~996.~~03059920~~05505992 01.~~97555260~~02557923 0.00000000 0.00000000 B-6 750,990.73 ~~997~~996.~~03060249~~05506449 01.~~97555132~~02556526 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 12.~~27923219~~68450599 ~~908~~905.~~51161147~~82710548 0.~~90851161~~90582711 12.~~27923219~~68450599 A-1 0.00000000 5.~~13496793~~53637217 ~~981~~976.~~88546875~~34909658 0.~~98188547~~97634910 5.~~13496793~~53637217 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 6413.~~17712901~~64475481 ~~980~~566.~~57663222~~93187741 0.~~98057663~~56693188 6413.~~17712901~~64475481 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 ~~293.02335671~~ 9.85379390 0.~~00985379~~00000000 ~~293~~0.~~02335671~~00000000 9.85379390 A-6 0.00000000 ~~293.02335702~~ 9.85379409 0.~~00985379~~00000000 ~~293~~0.~~02335702~~00000000 9.85379409 A-7 0.00000000 ~~293.02335660~~ 9.85379459 0.~~00985379~~00000000 ~~293~~0.~~02335660~~00000000 9.85379459 A-8 0.00000000 8232.~~41167600~~36442400 ~~721~~688.~~18161800~~81719400 0.~~72118162~~68881719 8232.~~41167600~~36442400 A-9 0.00000000 7128.~~38430170~~03379260 ~~758~~730.~~48985870~~45606600 0.~~75848986~~73045607 7128.~~38430170~~03379260 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 8232.~~41167600~~36442433 ~~721~~688.~~18161800~~81719367 0.~~72118162~~68881719 8232.~~41167600~~36442433 A-15 0.00000000 8232.~~41167600~~36442400 ~~721~~688.~~18162000~~81719200 0.~~72118162~~68881719 8232.~~41167600~~36442400 A-16 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-17 0.00000000 5.~~13496786~~53637229 ~~981~~976.~~88546886~~34909657 0.~~98188547~~97634910 5.~~13496786~~53637229 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 01.~~97555076~~02557314 ~~996~~995.~~05505516~~02948201 0.~~99605506~~99502948 01.~~97555076~~02557314 B-2 0.00000000 01.~~97555112~~02557443 ~~996~~995.~~05505495~~02948385 0.~~99605505~~99502948 01.~~97555112~~02557443 B-3 0.00000000 01.~~97555111~~02557396 ~~996~~995.~~05505425~~02948030 0.~~99605505~~99502948 01.~~97555111~~02557396 B-4 0.00000000 01.~~97555445~~02557443 ~~996~~995.~~05505495~~02948052 0.~~99605505~~99502948 01.~~97555445~~02557443 B-5 0.00000000 01.~~97555260~~02557923 ~~996~~995.~~05505992~~02948069 0.~~99605506~~99502948 01.~~97555260~~02557923 B-6 0.00000000 01.~~97555132~~02556526 ~~996~~995.~~05506449~~02949923 0.~~99605506~~99502950 01.~~97555132~~02556526 (3) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~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,~~351~~159.4068 0.00 0.00 0.00 A-1 69,226,000.00 4.00000% 6867,~~327~~972,~~476~~003.7546 ~~227~~226,~~758~~573.2634 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,~~373~~277,~~623~~383.6093 70,~~462~~021.4434 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% 4147,~~543,278~~810.4285 ~~20,823~~677.3647 0.00 0.00 A-6 39,714,400.00 2.~~70000~~71000% 12391,~~028,584~~337.3352 ~~27,064~~883.3177 0.00 0.00 A-7 10,831,200.00 15.~~76667~~73000% 3106,~~280,523~~728.0042 431,~~102~~399.4303 0.00 0.00 A-8 5,000,000.00 5.50000% 43,~~017~~605,~~966~~908.4709 1816,~~415~~527.6808 0.00 0.00 A-9 100,000,000.00 5.50000% 8275,~~987~~848,~~416~~985.0387 ~~380~~347,~~358~~641.9919 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,~~196~~034,~~844~~543.6728 142,~~985~~241.5466 0.00 0.00 A-14 30,000,000.00 5.50000% 2421,~~107~~635,~~798~~448.8254 ~~110~~99,~~494~~162.0847 0.00 0.00 A-15 2,500,000.00 5.50000% 21,~~008~~802,~~983~~954.2305 98,~~207~~263.8454 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% 6968,~~091~~731,~~430~~982.5782 ~~259~~257,~~092~~744.8694 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,~~236~~230,~~426~~324.4437 28,~~583~~555.6265 0.00 0.00 B-2 3,003,000.00 5.50000% 2,~~994~~991,~~082~~153.9133 13,~~722~~709.8845 0.00 0.00 B-3 1,751,000.00 5.50000% 1,~~745~~744,~~800~~092.5940 87,~~001~~993.5976 0.00 0.00 B-4 1,001,000.00 5.50000% ~~998~~997,~~027~~051.6411 4,~~574~~569.2982 0.00 0.00 B-5 751,000.00 5.50000% 748,~~769~~037.9835 3,~~431~~428.8650 0.00 0.00 B-6 750,990.73 5.50000% 748,~~760~~028.7412 3,~~431~~428.8246 0.00 0.00 Totals 500,433,961.88 1,~~962~~823,~~395~~704.1880 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 ~~136~~135,~~159~~757.6835 A-1 93.0574 0.00 ~~227~~226,~~749~~569.2060 0.00 67,~~972~~588,~~003~~742.4656 A-2 10.8276 0.00 45,~~831~~832.5158 0.00 10,000,000.00 A-3 21.8016 0.00 70,~~459~~020.6419 0.00 158,~~277~~832,~~383~~798.9365 A-4 20.3698 0.00 59,~~347~~348.2260 0.00 12,949,000.00 A-5 0.8301 0.00 ~~20,822~~677.5346 0.00 ~~147,810~~0.8500 A-6 10.0801 0.00 ~~27,063~~883.2476 0.00 ~~391,337~~0.5200 A-7 10.7102 0.00 431,~~100~~399.7101 0.00 ~~106,728~~0.4200 A-8 0.7327 0.00 1816,~~414~~526.9581 0.00 3,~~605~~444,~~908~~085.0997 A-9 155.1274 0.00 ~~380~~347,~~343~~635.8745 0.00 7573,~~848~~045,~~985~~606.8760 A-10 0.9640 0.00 24,~~203~~204.6218 0.00 5,281,000.00 A-11 0.9037 0.00 22,~~539~~540.9446 0.00 4,918,000.00 A-12 31.0828 0.00 77,~~542~~544.3314 0.00 16,919,000.00 A-13 52.6835 0.00 142,~~979~~239.8631 0.00 3130,~~034~~859,~~543~~554.2865 A-14 41.3964 0.00 ~~110~~99,~~489~~160.6984 0.00 2120,~~635~~664,~~448~~515.5481 A-15 0.3714 0.00 98,~~207~~263.4740 0.00 1,~~802~~722,~~954~~042.0598 A-16 0.9640 0.00 24,~~125~~126.7127 0.00 5,264,000.00 A-17 104.3025 0.00 ~~259~~257,~~082~~740.5768 0.00 68,~~731~~344,~~982~~436.8276 A-18 135.4057 0.00 337,~~269~~277.5135 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 10.1447 0.00 28,~~582~~555.4918 0.00 6,~~230~~223,~~324~~909.3741 B-2 0.5523 0.00 13,~~722~~709.3323 0.00 2,~~991~~988,~~153~~073.3354 B-3 0.3213 0.00 87,~~001~~993.2762 0.00 1,~~744~~742,~~092~~296.4062 B-4 0.1808 0.00 4,~~574~~569.1174 0.00 ~~997~~996,~~051~~024.1151 B-5 0.1406 0.00 3,~~431~~428.7345 0.00 ~~748~~747,~~037~~267.3514 B-6 0.1406 0.00 3,~~431~~428.6841 0.00 ~~748~~747,~~028~~257.1293 Totals 7830.0112 0.00 1,~~962~~823,~~317~~674.1872 0.00 (4) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~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% ~~909~~908.~~79084367~~51161147 0.00000000 0.00000000 0.00000000 A-1 69,226,000.00 4.00000% ~~987~~981.~~02043669~~88546875 3.~~29006818~~27295149 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% ~~986~~980.~~75376123~~57663222 4.~~52262131~~49430937 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% ~~302~~9.~~87715128~~85379390 10.~~38818698~~04516346 0.00000000 0.00000000 A-6 39,714,400.00 2.~~70000~~71000% ~~302~~9.~~87715111~~85379409 0.~~68147347~~02225314 0.00000000 0.00000000 A-7 10,831,200.00 15.~~76667~~73000% ~~302~~9.~~87715119~~85379459 30.~~97946950~~12916667 0.00000000 0.00000000 A-8 5,000,000.00 5.50000% ~~803~~721.~~59329400~~18161800 3.~~68313600~~30541600 0.00000000 0.00000000 A-9 100,000,000.00 5.50000% ~~829~~758.~~87416030~~48985870 3.~~80358990~~47641190 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% ~~987~~981.~~02046503~~88549721 4.~~52384386~~50030863 0.00000000 0.00000000 A-14 30,000,000.00 5.50000% ~~803~~721.~~59329400~~18161800 3.~~68313600~~30541567 0.00000000 0.00000000 A-15 2,500,000.00 5.50000% ~~803~~721.~~59329200~~18162000 3.~~68313600~~30541600 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% ~~987~~981.~~02043671~~88546886 3.~~70132657~~68207057 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% ~~997~~996.~~03060592~~05505516 4.~~56972342~~56525180 0.00000000 0.00000000 B-2 3,003,000.00 5.50000% ~~997~~996.~~03060606~~05505495 4.~~56972361~~56525142 0.00000000 0.00000000 B-3 1,751,000.00 5.50000% ~~997~~996.~~03060537~~05505425 4.~~56972587~~56525414 0.00000000 0.00000000 B-4 1,001,000.00 5.50000% ~~997~~996.~~03060939~~05505495 4.~~56972028~~56525475 0.00000000 0.00000000 B-5 751,000.00 5.50000% ~~997~~996.~~03059920~~05505992 4.~~56972037~~56524634 0.00000000 0.00000000 B-6 750,990.73 5.50000% ~~997~~996.~~03060249~~05506449 4.~~56972352~~56524943 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 ~~908~~905.~~51161147~~82710548 A-1 0.~~00013073~~00005403 0.00000000 3.~~28993731~~27289747 0.00000000 ~~981~~976.~~88546875~~34909658 A-2 0.~~00018200~~00007600 0.00000000 4.~~58315100~~58325800 0.00000000 1000.00000000 A-3 0.~~00017972~~00007445 0.00000000 4.~~52244159~~49423556 0.00000000 ~~980~~566.~~57663222~~93187741 A-4 0.~~00018225~~00007568 0.00000000 4.~~58315082~~58325739 0.00000000 1000.00000000 A-5 0.~~00005533~~00000067 0.00000000 10.~~38813165~~04516280 0.00000000 90.~~85379390~~00000000 A-6 0.~~00002719~~00000025 0.00000000 0.~~68144653~~02225289 0.00000000 90.~~85379409~~00000000 A-7 0.~~00015788~~00000185 0.00000000 30.~~97931070~~12916482 0.00000000 90.~~85379459~~00000000 A-8 0.~~00014600~~00005400 0.00000000 3.~~68299000~~30536200 0.00000000 ~~721~~688.~~18161800~~81719400 A-9 0.~~00015120~~00005740 0.00000000 3.~~80343870~~47635450 0.00000000 ~~758~~730.~~48985870~~45606600 A-10 0.~~00018178~~00007574 0.00000000 4.~~58315092~~58325696 0.00000000 1000.00000000 A-11 0.~~00018300~~00007523 0.00000000 4.~~58315169~~58325742 0.00000000 1000.00000000 A-12 0.~~00018204~~00007565 0.00000000 4.~~58315090~~58325788 0.00000000 1000.00000000 A-13 0.~~00017971~~00007435 0.00000000 4.~~52366415~~50023428 0.00000000 ~~981~~976.~~88549721~~34912452 A-14 0.~~00014633~~00005467 0.00000000 3.~~68298967~~30536133 0.00000000 ~~721~~688.~~18161800~~81719367 A-15 0.~~00014800~~00005600 0.00000000 3.~~68298800~~30536000 0.00000000 ~~721~~688.~~18162000~~81719200 A-16 0.~~00018237~~00007599 0.00000000 4.~~58315160~~58325798 0.00000000 1000.00000000 A-17 0.~~00014714~~00006071 0.00000000 3.~~70117957~~68200971 0.00000000 ~~981~~976.~~88546886~~34909657 A-18 0.~~00018209~~00007569 0.00000000 4.~~58315115~~58325769 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.~~00018225~~00007514 0.00000000 4.~~56954277~~56517666 0.00000000 ~~996~~995.~~05505516~~02948201 B-2 0.~~00018315~~00007659 0.00000000 4.~~56954046~~56517816 0.00000000 ~~996~~995.~~05505495~~02948385 B-3 0.~~00018275~~00007424 0.00000000 4.~~56954312~~56517419 0.00000000 ~~996~~995.~~05505425~~02948030 B-4 0.~~00017982~~00007992 0.00000000 4.~~56954046~~56517483 0.00000000 ~~996~~995.~~05505495~~02948052 B-5 0.~~00018642~~00007989 0.00000000 4.~~56954727~~56517976 0.00000000 ~~996~~995.~~05505992~~02948069 B-6 0.~~00018642~~00007989 0.00000000 4.~~56953710~~56518285 0.00000000 ~~996~~995.~~05506449~~02949923 (6) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 03,242.0098 Deposits Payments of Interest and Principal 3213,~~484~~774,~~308~~934.4596 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 013,586.0006 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 3213,~~484~~788,~~308~~521.4502 Withdrawals Reimbursement for Servicer Advances ~~183,829~~0.3800 Payment of Service Fee 75,~~007~~515.8825 Payment of Interest and Principal 3213,~~222~~716,~~228~~248.2178 Total Withdrawals (Pool Distribution Amount) 3213,~~481~~791,~~065~~764.4703 Ending Balance ~~3,242~~0.9800

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 1710,~~866~~753.2557 Servicing Fee Support 1710,~~788~~723.2445 Non-Supported Prepayment/Curtailment Interest Shortfall 7830.0112

SERVICING FEES Gross Servicing Fee 8982,~~227~~921.0483 Master Servicing Fee 3,~~569~~316.0887 Supported Prepayment/Curtailment Interest Shortfall 1710,~~788~~723.2445 Net Servicing Fee 75,~~007~~515.8825

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~142~~141,~~912~~270.8651

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 13,511,990.73 2.70005470% 13,~~458~~444,~~686~~829.6815 3.~~38127891~~48182812% 96.~~617564~~516947% 100.000000% Class B-1 7,256,990.73 1.45013954% 7,~~228~~220,~~362~~919.3174 1.~~81600996~~87001271% 1.~~565805~~612382% 0.000000% Class B-2 4,253,990.73 0.85006036% 4,~~237~~232,~~208~~846.9820 1.~~06453071~~09618670% 0.~~751736~~774098% 0.000000% Class B-3 2,502,990.73 0.50016404% 2,~~493~~490,~~116~~549.58 0.~~62635551~~64498146% 0.~~438325~~451364% 0.000000% Class B-4 1,501,990.73 0.30013765% 1,~~496~~494,~~065~~525.4707 0.~~37586243~~38703946% 0.~~250579~~258033% 0.000000% Class B-5 750,990.73 0.15006790% ~~748~~747,~~028~~257.1293 0.~~18793005~~19351854% 0.~~187997~~193589% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~187994~~193587% 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.~~050208~~046789% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation ) ~~351~~350 Beginning Scheduled Collateral Loan Count ~~950~~885 Number Of Loans Paid In Full 6524 Ending Scheduled Collateral Loan Count ~~885~~861 Beginning Scheduled Collateral Balance ~~428~~398,~~295~~035,~~300~~389.9392 Ending Scheduled Collateral Balance ~~398~~386,~~035~~142,~~389~~815.9284 Ending Actual Collateral Balance at 3130-~~Aug~~Sep-2003 ~~404~~384,~~656~~066,~~335~~987.4963 Ending Scheduled Balance For Wells Fargo Serviced ~~390~~378,~~480~~596,~~199~~044.9055 Ending Scheduled Balance For Other Servicers 7,~~555~~546,~~190~~771.0229 Monthly P &I Constant 2,~~508~~331,~~163~~547.3594 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 3213,~~147~~640,~~186~~333.7936 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~378~~366,~~014~~157,~~392~~248.3281 Ending scheduled Balance For discounted Loans 2019,~~020~~985,~~997~~567.6003 Scheduled Principal ~~419~~409,~~114~~872.2633 Unscheduled Principal 2911,~~840~~482,~~796~~701.75 Unpaid Principal Balance Of Outstanding Mortgage Loans With Or Less Than Or Equal To 80% ~~390~~379,~~682~~151,~~990~~636.1786 Greater Than 80%, less than or equal to 85% 1,~~476~~475,~~615~~138.2621 Greater than 85%, less than or equal to 95% 5,~~501~~146,~~778~~568.9897 Greater than 95% ~~381~~380,~~345~~906.3441

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