8-K 1 wfm03004.txt SEPTEMBER 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): September 25, 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 September 25, 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 September 25, 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: 9/29/03 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 September 25, 2003 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 78/31/03 Distribution Date: 89/25/03 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~~136,~~397~~351.7140 0.00 ~~13,046~~191.3172 A-1 94978RAA9 SEN 4.00000% 68,~~655~~327,~~038~~476.0675 ~~228~~227,~~849~~749.6920 ~~327~~355,~~561~~473.3129 A-2 94978RAB7 SEN 5.50000% 10,000,000.00 45,~~833~~831.2551 0.00 A-3 94978RAC5 SEN 5.50000% 15,~~456~~373,~~186~~623.3660 70,~~840~~459.7264 8296,~~562~~239.7667 A-4 94978RAD3 SEN 5.50000% 12,949,000.00 59,~~349~~347.4722 0.00 A-5 94978RAE1 SEN 5.50000% 104,~~195~~543,~~794~~278.2942 4620,~~730~~822.6353 54,~~652~~395,~~515~~467.8756 A-6 94978RAF8 SEN 2.~~71375~~70000% 2612,~~993~~028,~~937~~584.0033 6127,~~045~~063.5524 1411,~~965~~637,~~352~~246.6781 A-7 94978RAG6 SEN 15.~~71625~~76667% 73,~~361~~280,~~982~~523.8200 9643,~~418~~100.7871 43,~~081~~173,~~459~~794.8258 A-8 94978RAH4 SEN 5.50000% 4,~~541~~017,~~655~~966.9947 2018,~~815~~414.8895 ~~523~~412,~~689~~058.5238 A-9 94978RAJ0 SEN 5.50000% 9282,~~059~~987,~~725~~416.3003 ~~421~~380,~~939~~343.6087 97,~~072~~138,~~309~~430.2617 A-10 94978RAK7 SEN 5.50000% 5,281,000.00 24,~~204~~203.5462 0.00 A-11 94978RAL5 SEN 5.50000% 4,918,000.00 22,~~540~~539.7994 0.00 A-12 94978RAM3 SEN 5.50000% 16,919,000.00 77,~~545~~542.2733 0.00 A-13 94978RAN1 SEN 5.50000% 0.00 ~~143~~142,~~670~~979.7386 0.00 A-14 94978RAP6 SEN 5.50000% 2724,~~249~~107,~~935~~798.9282 ~~124~~110,~~895~~489.3069 32,~~142~~472,~~137~~350.1128 A-15 94978RAQ4 SEN 5.50000% 2,~~270~~008,~~827~~983.9923 109,~~407~~207.9447 ~~261~~206,~~844~~029.7619 A-16 94978RAX9 SEN 5.50000% 5,264,000.00 24,~~126~~125.6271 0.00 A-17 94978RAY7 SEN 4.50000% 69,~~422~~091,~~654~~430.2657 ~~260~~259,~~334~~082.4657 ~~331~~359,~~223~~447.7075 A-18 94978RAZ4 SEN 5.50000% 73,589,000.00 337,~~282~~269.2751 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,~~242~~236,~~450~~426.8344 28,~~611~~582.1849 6,~~024~~102.3907 B-2 94978RAV3 SUB 5.50000% 2,~~996~~994,~~975~~082.1991 13,~~736~~722.1133 2,~~892~~929.2858 B-3 94978RAW1 SUB 5.50000% 1,~~747~~745,~~487~~800.0359 8,~~009~~001.3027 1,~~686~~708.4419 B-4 94978RBA8 SUB 5.50000% 998,~~991~~027.7364 4,~~578~~574.7011 ~~964~~976.0953 B-5 94978RBB6 SUB 5.50000% ~~749~~748,~~493~~769.3098 3,~~435~~431.1773 ~~723~~732.3164 B-6 94978RBC4 SUB 5.50000% ~~749~~748,~~484~~760.0574 3,~~435~~431.1368 ~~723~~732.3063 Totals ~~466~~428,~~762~~295,~~017~~300.8392 21,~~138~~962,~~637~~317.0818 3830,~~466~~259,~~716~~911.9004

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 136,~~351~~159.4068 ~~13,046~~191.3172 0.00 A-1 0.00 6867,~~327~~972,~~476~~003.7546 ~~556~~583,~~411~~222.0049 0.00 A-2 0.00 10,000,000.00 45,~~833~~831.2551 0.00 A-3 0.00 15,~~373~~277,~~623~~383.6093 ~~153~~166,~~403~~699.4831 0.00 A-4 0.00 12,949,000.00 59,~~349~~347.4722 0.00 A-5 0.00 4147,~~543,278~~810.4285 54,~~699~~416,~~246~~290.5009 0.00 A-6 0.00 12391,~~028,584~~337.3352 1511,~~026~~664,~~398~~310.2205 0.00 A-7 0.00 3106,~~280,523~~728.0042 43,~~177~~216,~~878~~895.6029 0.00 A-8 0.00 43,~~017~~605,~~966~~908.4709 ~~544~~430,~~505~~473.4033 0.00 A-9 0.00 8275,~~987~~848,~~416~~985.0387 97,~~494~~518,~~248~~774.8604 0.00 A-10 0.00 5,281,000.00 24,~~204~~203.5462 0.00 A-11 0.00 4,918,000.00 22,~~540~~539.7994 0.00 A-12 0.00 16,919,000.00 77,~~545~~542.2733 0.00 A-13 0.00 0.00 ~~143~~142,~~670~~979.7386 0.00 A-14 0.00 2421,~~107~~635,~~798~~448.8254 32,~~267~~582,~~032~~839.4197 0.00 A-15 0.00 21,~~008~~802,~~983~~954.2305 ~~272~~215,~~252~~236.7066 0.00 A-16 0.00 5,264,000.00 24,~~126~~125.6271 0.00 A-17 0.00 6968,~~091~~731,~~430~~982.5782 ~~591~~618,~~558~~530.1632 0.00 A-18 0.00 73,589,000.00 337,~~282~~269.2751 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,~~236~~230,~~426~~324.4437 34,~~635~~684.5756 0.00 B-2 0.00 2,~~994~~991,~~082~~153.9133 16,~~628~~651.3991 0.00 B-3 0.00 1,~~745~~744,~~800~~092.5940 9,~~695~~709.7446 0.00 B-4 0.00 ~~998~~997,~~027~~051.6411 5,~~542~~550.7964 0.00 B-5 0.00 748,~~769~~037.9835 4,~~158~~164.4837 0.00 B-6 0.00 748,~~760~~028.7412 4,~~158~~164.4331 0.00 Totals 0.00 ~~428~~398,~~295~~035,~~300~~389.9291 4032,~~605~~222,~~353~~228.9822 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~~136,~~397~~351.7140 ~~178~~179.8179 ~~12,867~~11.5093 0.00 0.00 A-1 69,226,000.00 68,~~655~~327,~~038~~476.0675 34,~~726~~768.3262 ~~323~~350,~~834~~704.9966 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,~~456~~373,~~186~~623.3660 ~~939~~1,291.2304 8194,~~623~~948.5363 0.00 0.00 A-4 12,949,000.00 12,949,000.00 0.00 0.00 0.00 0.00 A-5 15,000,400.00 104,~~195~~543,~~794~~278.2942 6458,~~302~~964.7255 54,~~588~~336,~~213~~503.1501 0.00 0.00 A-6 39,714,400.00 2612,~~993~~028,~~937~~584.0033 ~~170~~156,~~245~~111.0695 1411,~~795~~481,~~107~~134.6186 0.00 0.00 A-7 10,831,200.00 73,~~361~~280,~~982~~523.8200 4642,~~430~~575.4799 43,~~035~~131,~~029~~218.3560 0.00 0.00 A-8 5,000,000.00 4,~~541~~017,~~655~~966.9947 5,~~957~~527.4670 ~~517~~406,~~732~~530.0568 0.00 0.00 A-9 100,000,000.00 9282,~~059~~987,~~725~~416.3003 ~~103~~95,~~206~~760.1199 87,~~969~~042,~~103~~669.1618 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 2724,~~249~~107,~~935~~798.9282 3533,~~744~~166.7821 32,~~106~~439,~~392~~184.3206 0.00 0.00 A-15 2,500,000.00 2,~~270~~008,~~827~~983.9923 2,~~978~~763.7385 ~~258~~203,~~866~~265.0334 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 69,~~422~~091,~~654~~430.2657 34,~~767~~821.9894 ~~327~~354,~~455~~625.7181 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,~~242~~236,~~450~~426.8344 6,~~024~~102.3907 0.00 0.00 0.00 B-2 3,003,000.00 2,~~996~~994,~~975~~082.1991 2,~~892~~929.2858 0.00 0.00 0.00 B-3 1,751,000.00 1,~~747~~745,~~487~~800.0359 1,~~686~~708.4419 0.00 0.00 0.00 B-4 1,001,000.00 998,~~991~~027.7364 ~~964~~976.0953 0.00 0.00 0.00 B-5 751,000.00 ~~749~~748,~~493~~769.3098 ~~723~~732.3164 0.00 0.00 0.00 B-6 750,990.73 ~~749~~748,~~484~~760.0574 ~~723~~732.3063 0.00 0.00 0.00 Totals 500,433,961.88 ~~466~~428,~~762~~295,~~017~~300.8392 ~~450~~419,~~491~~114.4827 3829,~~016~~840,~~225~~796.4076 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 ~~13,046~~191.3172 136,~~351~~159.4068 0.~~90979084~~90851161 ~~13,046~~191.3172 A-1 ~~327~~355,~~561~~473.3129 6867,~~327~~972,~~476~~003.7546 0.~~98702044~~98188547 ~~327~~355,~~561~~473.3129 A-2 0.00 10,000,000.00 1.00000000 0.00 A-3 8296,~~562~~239.7667 15,~~373~~277,~~623~~383.6093 0.~~98675376~~98057663 8296,~~562~~239.7667 A-4 0.00 12,949,000.00 1.00000000 0.00 A-5 54,~~652~~395,~~515~~467.8756 4147,~~543,278~~810.4285 0.~~30287715~~00985379 54,~~652~~395,~~515~~467.8756 A-6 1411,~~965~~637,~~352~~246.6781 12391,~~028,584~~337.3352 0.~~30287715~~00985379 1411,~~965~~637,~~352~~246.6781 A-7 43,~~081~~173,~~459~~794.8258 3106,~~280,523~~728.0042 0.~~30287715~~00985379 43,~~081~~173,~~459~~794.8258 A-8 ~~523~~412,~~689~~058.5238 43,~~017~~605,~~966~~908.4709 0.~~80359329~~72118162 ~~523~~412,~~689~~058.5238 A-9 97,~~072~~138,~~309~~430.2617 8275,~~987~~848,~~416~~985.0387 0.~~82987416~~75848986 97,~~072~~138,~~309~~430.2617 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 32,~~142~~472,~~137~~350.1128 2421,~~107~~635,~~798~~448.8254 0.~~80359329~~72118162 32,~~142~~472,~~137~~350.1128 A-15 ~~261~~206,~~844~~029.7619 21,~~008~~802,~~983~~954.2305 0.~~80359329~~72118162 ~~261~~206,~~844~~029.7619 A-16 0.00 5,264,000.00 1.00000000 0.00 A-17 ~~331~~359,~~223~~447.7075 6968,~~091~~731,~~430~~982.5782 0.~~98702044~~98188547 ~~331~~359,~~223~~447.7075 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,~~024~~102.3907 6,~~236~~230,~~426~~324.4437 0.~~99703061~~99605506 6,~~024~~102.3907 B-2 2,~~892~~929.2858 2,~~994~~991,~~082~~153.9133 0.~~99703061~~99605505 2,~~892~~929.2858 B-3 1,~~686~~708.4419 1,~~745~~744,~~800~~092.5940 0.~~99703061~~99605505 1,~~686~~708.4419 B-4 ~~964~~976.0953 ~~998~~997,~~027~~051.6411 0.~~99703061~~99605505 ~~964~~976.0953 B-5 ~~723~~732.3164 748,~~769~~037.9835 0.~~99703060~~99605506 ~~723~~732.3164 B-6 ~~723~~732.3063 748,~~760~~028.7412 0.~~99703060~~99605506 ~~723~~732.3063 Totals 3830,~~466~~259,~~716~~911.9004 ~~428~~398,~~295~~035,~~300~~389.9291 0.~~85584779~~79538045 3830,~~466~~259,~~716~~911.9004

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 149,871.15 ~~996~~909.~~84101977~~79084367 1.~~19309153~~19963048 850.~~85708457~~07960171 0.00000000 A-1 69,226,000.00 ~~991~~987.~~75220380~~02043669 0.~~05382833~~06888481 45.~~67793878~~06608297 0.00000000 A-2 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 15,580,000.00 ~~992~~986.~~05303979~~75376123 0.~~06028434~~08286521 56.~~23899422~~09426380 0.00000000 A-4 12,949,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 15,000,400.00 ~~679~~302.~~70149396~~87715128 43.~~28673369~~93086518 ~~372~~289.~~53760900~~09249153 0.00000000 A-6 39,714,400.00 ~~679~~302.~~70149366~~87715111 43.~~28673378~~93086513 ~~372~~289.~~53760878~~09249189 0.00000000 A-7 10,831,200.00 ~~679~~302.~~70149383~~87715119 43.~~28673370~~93086546 ~~372~~289.~~53760894~~09249206 0.00000000 A-8 5,000,000.00 ~~908~~803.~~33119800~~59329400 1.~~19149200~~10554000 ~~103~~81.~~54641000~~30613600 0.00000000 A-9 100,000,000.00 ~~920~~829.~~59725300~~87416030 10.~~03206110~~95760990 8970.~~69103160~~42669180 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 ~~908~~803.~~33119733~~59329400 1.~~19149267~~10554033 ~~103~~81.~~54641067~~30613533 0.00000000 A-15 2,500,000.00 ~~908~~803.~~33119600~~59329200 1.~~19149200~~10554000 ~~103~~81.~~54641200~~30613600 0.00000000 A-16 5,264,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-17 70,000,000.00 ~~991~~987.~~75220371~~02043671 0.~~05382829~~06888486 45.~~67793871~~06608300 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.~~99373781~~03060592 0.~~96313189~~97555076 0.00000000 0.00000000 B-2 3,003,000.00 997.~~99373626~~03060606 0.~~96313020~~97555112 0.00000000 0.00000000 B-3 1,751,000.00 997.~~99373501~~03060537 0.~~96312964~~97555111 0.00000000 0.00000000 B-4 1,001,000.00 997.~~99373626~~03060939 0.~~96312687~~97555445 0.00000000 0.00000000 B-5 751,000.00 997.~~99374168~~03059920 0.~~96312916~~97555260 0.00000000 0.00000000 B-6 750,990.73 997.~~99374354~~03060249 0.~~96312773~~97555132 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 871.~~05017610~~27923219 ~~909~~908.~~79084367~~51161147 0.~~90979084~~90851161 871.~~05017610~~27923219 A-1 0.00000000 45.~~73176711~~13496793 ~~987~~981.~~02043669~~88546875 0.~~98702044~~98188547 45.~~73176711~~13496793 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 56.~~29927856~~17712901 ~~986~~980.~~75376123~~57663222 0.~~98675376~~98057663 56.~~29927856~~17712901 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 ~~376~~293.~~82434268~~02335671 ~~302~~9.~~87715128~~85379390 0.~~30287715~~00985379 ~~376~~293.~~82434268~~02335671 A-6 0.00000000 ~~376~~293.~~82434256~~02335702 ~~302~~9.~~87715111~~85379409 0.~~30287715~~00985379 ~~376~~293.~~82434256~~02335702 A-7 0.00000000 ~~376~~293.~~82434264~~02335660 ~~302~~9.~~87715119~~85379459 0.~~30287715~~00985379 ~~376~~293.~~82434264~~02335660 A-8 0.00000000 ~~104~~82.~~73790400~~41167600 ~~803~~721.~~59329400~~18161800 0.~~80359329~~72118162 ~~104~~82.~~73790400~~41167600 A-9 0.00000000 9071.~~72309260~~38430170 ~~829~~758.~~87416030~~48985870 0.~~82987416~~75848986 9071.~~72309260~~38430170 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 ~~104~~82.~~73790367~~41167600 ~~803~~721.~~59329400~~18161800 0.~~80359329~~72118162 ~~104~~82.~~73790367~~41167600 A-15 0.00000000 ~~104~~82.~~73790400~~41167600 ~~803~~721.~~59329200~~18162000 0.~~80359329~~72118162 ~~104~~82.~~73790400~~41167600 A-16 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-17 0.00000000 45.~~73176714~~13496786 ~~987~~981.~~02043671~~88546886 0.~~98702044~~98188547 45.~~73176714~~13496786 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 0.~~96313189~~97555076 ~~997~~996.~~03060592~~05505516 0.~~99703061~~99605506 0.~~96313189~~97555076 B-2 0.00000000 0.~~96313020~~97555112 ~~997~~996.~~03060606~~05505495 0.~~99703061~~99605505 0.~~96313020~~97555112 B-3 0.00000000 0.~~96312964~~97555111 ~~997~~996.~~03060537~~05505425 0.~~99703061~~99605505 0.~~96312964~~97555111 B-4 0.00000000 0.~~96312687~~97555445 ~~997~~996.~~03060939~~05505495 0.~~99703061~~99605505 0.~~96312687~~97555445 B-5 0.00000000 0.~~96312916~~97555260 ~~997~~996.~~03059920~~05505992 0.~~99703060~~99605506 0.~~96312916~~97555260 B-6 0.00000000 0.~~96312773~~97555132 ~~997~~996.~~03060249~~05506449 0.~~99703060~~99605506 0.~~96312773~~97555132 (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~~136,~~397~~351.7140 0.00 0.00 0.00 A-1 69,226,000.00 4.00000% 68,~~655~~327,~~038~~476.0675 ~~228~~227,~~850~~758.1326 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,~~456~~373,~~186~~623.3660 70,~~840~~462.8544 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% 104,~~195~~543,~~794~~278.2942 4620,~~730~~823.7236 0.00 0.00 A-6 39,714,400.00 2.~~71375~~70000% 2612,~~993~~028,~~937~~584.0033 6127,~~045~~064.6631 0.00 0.00 A-7 10,831,200.00 15.~~71625~~76667% 73,~~361~~280,~~982~~523.8200 9643,~~418~~102.9743 0.00 0.00 A-8 5,000,000.00 5.50000% 4,~~541~~017,~~655~~966.9947 2018,~~815~~415.9268 0.00 0.00 A-9 100,000,000.00 5.50000% 9282,~~059~~987,~~725~~416.3003 ~~421~~380,~~940~~358.4199 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,~~346~~196,~~402~~844.0667 ~~143~~142,~~671~~985.0154 0.00 0.00 A-14 30,000,000.00 5.50000% 2724,~~249~~107,~~935~~798.9282 ~~124~~110,~~895~~494.5408 0.00 0.00 A-15 2,500,000.00 5.50000% 2,~~270~~008,~~827~~983.9923 109,~~407~~207.9684 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% 69,~~422~~091,~~654~~430.2657 ~~260~~259,~~334~~092.9586 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,~~242~~236,~~450~~426.8344 28,~~611~~583.2362 0.00 0.00 B-2 3,003,000.00 5.50000% 2,~~996~~994,~~975~~082.1991 13,~~736~~722.1488 0.00 0.00 B-3 1,751,000.00 5.50000% 1,~~747~~745,~~487~~800.0359 8,~~009~~001.3259 0.00 0.00 B-4 1,001,000.00 5.50000% 998,~~991~~027.7364 4,~~578~~574.7129 0.00 0.00 B-5 751,000.00 5.50000% ~~749~~748,~~493~~769.3098 3,~~435~~431.1886 0.00 0.00 B-6 750,990.73 5.50000% ~~749~~748,~~484~~760.0574 3,~~435~~431.1482 0.00 0.00 Totals 500,433,961.88 21,~~138~~962,~~641~~395.1718 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,~~351~~159.4068 A-1 09.4405 0.00 ~~228~~227,~~849~~749.6920 0.00 6867,~~327~~972,~~476~~003.7546 A-2 01.0982 0.00 45,~~833~~831.2551 0.00 10,000,000.00 A-3 02.1480 0.00 70,~~840~~459.7264 0.00 15,~~373~~277,~~623~~383.6093 A-4 02.1136 0.00 59,~~349~~347.4722 0.00 12,949,000.00 A-5 0.0983 0.00 4620,~~730~~822.6353 0.00 4147,~~543,278~~810.4285 A-6 01.1208 0.00 6127,~~045~~063.5524 0.00 12391,~~028,584~~337.3352 A-7 01.1871 0.00 9643,~~418~~100.7871 0.00 3106,~~280,523~~728.0042 A-8 0.0473 0.00 2018,~~815~~414.8895 0.00 43,~~017~~605,~~966~~908.4709 A-9 015.8112 0.00 ~~421~~380,~~939~~343.6087 0.00 8275,~~987~~848,~~416~~985.0387 A-10 0.0596 0.00 24,~~204~~203.5462 0.00 5,281,000.00 A-11 0.0490 0.00 22,~~540~~539.7994 0.00 4,918,000.00 A-12 03.1508 0.00 77,~~545~~542.2733 0.00 16,919,000.00 A-13 05.2768 0.00 ~~143~~142,~~670~~979.7386 0.00 31,~~196~~034,~~844~~543.6728 A-14 04.2439 0.00 ~~124~~110,~~895~~489.3069 0.00 2421,~~107~~635,~~798~~448.8254 A-15 0.0237 0.00 109,~~407~~207.9447 0.00 21,~~008~~802,~~983~~954.2305 A-16 0.0596 0.00 24,~~126~~125.6271 0.00 5,264,000.00 A-17 010.5030 0.00 ~~260~~259,~~334~~082.4657 0.00 6968,~~091~~731,~~430~~982.5782 A-18 013.6440 0.00 337,~~282~~269.2751 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 01.0514 0.00 28,~~611~~582.1849 0.00 6,~~236~~230,~~426~~324.4437 B-2 0.0355 0.00 13,~~736~~722.1133 0.00 2,~~994~~991,~~082~~153.9133 B-3 0.0232 0.00 8,~~009~~001.3027 0.00 1,~~745~~744,~~800~~092.5940 B-4 0.0118 0.00 4,~~578~~574.7011 0.00 ~~998~~997,~~027~~051.6411 B-5 0.0114 0.00 3,~~435~~431.1773 0.00 748,~~769~~037.9835 B-6 0.0114 0.00 3,~~435~~431.1368 0.00 748,~~760~~028.7412 Totals 478.1101 0.00 21,~~138~~962,~~637~~317.0818 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% ~~996~~909.~~84101977~~79084367 0.00000000 0.00000000 0.00000000 A-1 69,226,000.00 4.00000% ~~991~~987.~~75220380~~02043669 3.~~30584072~~29006818 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% ~~992~~986.~~05303979~~75376123 4.~~54690950~~52262131 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% ~~679~~302.~~70149396~~87715128 31.~~11529826~~38818698 0.00000000 0.00000000 A-6 39,714,400.00 2.~~71375~~70000% ~~679~~302.~~70149366~~87715111 10.~~53711651~~68147347 0.00000000 0.00000000 A-7 10,831,200.00 15.~~71625~~76667% ~~679~~302.~~70149383~~87715119 83.~~90196562~~97946950 0.00000000 0.00000000 A-8 5,000,000.00 5.50000% ~~908~~803.~~33119800~~59329400 43.~~16318400~~68313600 0.00000000 0.00000000 A-9 100,000,000.00 5.50000% ~~920~~829.~~59725300~~87416030 43.~~21940410~~80358990 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% ~~991~~987.~~75223217~~02046503 4.~~54553108~~52384386 0.00000000 0.00000000 A-14 30,000,000.00 5.50000% ~~908~~803.~~33119733~~59329400 43.~~16318467~~68313600 0.00000000 0.00000000 A-15 2,500,000.00 5.50000% ~~908~~803.~~33119600~~59329200 43.~~16318400~~68313600 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% ~~991~~987.~~75220371~~02043671 3.~~71907071~~70132657 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.~~99373781~~03060592 4.~~57413749~~56972342 0.00000000 0.00000000 B-2 3,003,000.00 5.50000% 997.~~99373626~~03060606 4.~~57413919~~56972361 0.00000000 0.00000000 B-3 1,751,000.00 5.50000% 997.~~99373501~~03060537 4.~~57414049~~56972587 0.00000000 0.00000000 B-4 1,001,000.00 5.50000% 997.~~99373626~~03060939 4.~~57413586~~56972028 0.00000000 0.00000000 B-5 751,000.00 5.50000% 997.~~99374168~~03059920 4.~~57414115~~56972037 0.00000000 0.00000000 B-6 750,990.73 5.50000% 997.~~99374354~~03060249 4.~~57414434~~56972352 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 ~~909~~908.~~79084367~~51161147 A-1 0.~~00000636~~00013073 0.00000000 3.~~30583437~~28993731 0.00000000 ~~987~~981.~~02043669~~88546875 A-2 0.~~00000900~~00018200 0.00000000 4.~~58332500~~58315100 0.00000000 1000.00000000 A-3 0.~~00000899~~00017972 0.00000000 4.~~54690116~~52244159 0.00000000 ~~986~~980.~~75376123~~57663222 A-4 0.~~00000849~~00018225 0.00000000 4.~~58332458~~58315082 0.00000000 1000.00000000 A-5 0.~~00000600~~00005533 0.00000000 31.~~11529226~~38813165 0.00000000 ~~302~~9.~~87715128~~85379390 A-6 0.~~00000302~~00002719 0.00000000 10.~~53711374~~68144653 0.00000000 ~~302~~9.~~87715111~~85379409 A-7 0.~~00001662~~00015788 0.00000000 83.~~90194808~~97931070 0.00000000 ~~302~~9.~~87715119~~85379459 A-8 0.~~00000800~~00014600 0.00000000 43.~~16317600~~68299000 0.00000000 ~~803~~721.~~59329400~~18161800 A-9 0.~~00000810~~00015120 0.00000000 43.~~21939600~~80343870 0.00000000 ~~829~~758.~~87416030~~48985870 A-10 0.~~00000947~~00018178 0.00000000 4.~~58332513~~58315092 0.00000000 1000.00000000 A-11 0.~~00000813~~00018300 0.00000000 4.~~58332452~~58315169 0.00000000 1000.00000000 A-12 0.~~00000887~~00018204 0.00000000 4.~~58332466~~58315090 0.00000000 1000.00000000 A-13 0.~~00000854~~00017971 0.00000000 4.~~54552222~~52366415 0.00000000 ~~987~~981.~~02046503~~88549721 A-14 0.~~00000800~~00014633 0.00000000 43.~~16317667~~68298967 0.00000000 ~~803~~721.~~59329400~~18161800 A-15 0.~~00000800~~00014800 0.00000000 43.~~16317600~~68298800 0.00000000 ~~803~~721.~~59329200~~18162000 A-16 0.~~00000950~~00018237 0.00000000 4.~~58332447~~58315160 0.00000000 1000.00000000 A-17 0.~~00000714~~00014714 0.00000000 3.~~71906371~~70117957 0.00000000 ~~987~~981.~~02043671~~88546886 A-18 0.~~00000870~~00018209 0.00000000 4.~~58332455~~58315115 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.~~00000799~~00018225 0.00000000 4.~~57412950~~56954277 0.00000000 ~~997~~996.~~03060592~~05505516 B-2 0.~~00000999~~00018315 0.00000000 4.~~57412920~~56954046 0.00000000 ~~997~~996.~~03060606~~05505495 B-3 0.~~00001142~~00018275 0.00000000 4.~~57412907~~56954312 0.00000000 ~~997~~996.~~03060537~~05505425 B-4 0.~~00000999~~00017982 0.00000000 4.~~57412587~~56954046 0.00000000 ~~997~~996.~~03060939~~05505495 B-5 0.~~00001332~~00018642 0.00000000 4.~~57412783~~56954727 0.00000000 ~~997~~996.~~03059920~~05505992 B-6 0.~~00001332~~00018642 0.00000000 4.~~57413103~~56953710 0.00000000 ~~997~~996.~~03060249~~05506449 (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 4032,~~537~~484,~~579~~308.3445 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) ~~183,829~~0.3800 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 4032,~~721~~484,~~408~~308.7245 Withdrawals Reimbursement for Servicer Advances 33183,~~005~~829.8138 Payment of Service Fee 8375,~~048~~007.9088 Payment of Interest and Principal 4032,~~605~~222,~~353~~228.9921 Total Withdrawals (Pool Distribution Amount) 4032,~~721~~481,~~408~~065.7047 Ending Balance 03,242.0098

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 1817,~~086~~866.4425 Servicing Fee Support 1817,~~082~~788.3324 Non-Supported Prepayment/Curtailment Interest Shortfall 478.1101

SERVICING FEES Gross Servicing Fee 9789,~~241~~227.5604 Master Servicing Fee 3,~~889~~569.6608 Supported Prepayment/Curtailment Interest Shortfall 1817,~~082~~788.3324 Net Servicing Fee 8375,~~048~~007.9088

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 20 0 0 0 20 ~~1,060,186~~0.5000 0.00 0.00 0.00 ~~1,060,186~~0.5000 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 20 0 0 0 20 ~~1,060,186~~0.5000 0.00 0.00 0.00 ~~1,060,186~~0.5000 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.~~210526~~000000% 0.000000% 0.000000% 0.000000% 0.~~210526~~000000% 0.~~241885~~000000% 0.000000% 0.000000% 0.000000% 0.~~241885~~000000% 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.~~210526~~000000% 0.000000% 0.000000% 0.000000% 0.~~210526~~000000% 0.~~241885~~000000% 0.000000% 0.000000% 0.000000% 0.~~241885~~000000%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~311~~142,~~195~~912.3686

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 13,511,990.73 2.70005470% 13,~~471~~458,~~868~~686.3068 3.~~14546255~~38127891% 96.~~853536~~617564% 100.000000% Class B-1 7,256,990.73 1.45013954% 7,~~235~~228,~~441~~362.8631 1.~~68935822~~81600996% 1.~~456568~~565805% 0.000000% Class B-2 4,253,990.73 0.85006036% 4,~~241~~237,~~358~~208.9598 01.~~99028846~~06453071% 0.~~699292~~751736% 0.000000% Class B-3 2,502,990.73 0.50016404% 2,~~495~~493,~~558~~116.3658 0.~~58267237~~62635551% 0.~~407746~~438325% 0.000000% Class B-4 1,501,990.73 0.30013765% 1,~~497~~496,~~530~~065.7247 0.~~34964911~~37586243% 0.~~233097~~250579% 0.000000% Class B-5 750,990.73 0.15006790% 748,~~760~~028.7412 0.~~17482348~~18793005% 0.~~174881~~187997% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~174879~~187994% 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.~~056699~~050208% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation ) ~~352~~351 Beginning Scheduled Collateral Loan Count ~~1,027~~950 Number Of Loans Paid In Full 7765 Ending Scheduled Collateral Loan Count ~~950~~885 Beginning Scheduled Collateral Balance ~~466~~428,~~762~~295,~~017~~300.8393 Ending Scheduled Collateral Balance ~~428~~398,~~295~~035,~~300~~389.9392 Ending Actual Collateral Balance at 31-~~Jul~~Aug-2003 ~~438~~404,~~302~~656,~~466~~335.5249 Ending Scheduled Balance For Wells Fargo Serviced ~~420~~390,~~731~~480,~~735~~199.7990 Ending Scheduled Balance For Other Servicers 7,~~563~~555,~~565~~190.1402 Monthly P &I Constant 2,~~730~~508,~~318~~163.4835 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 4032,~~517~~147,~~492~~186.2179 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~408~~378,~~248~~014,~~069~~392.5732 Ending scheduled Balance For discounted Loans 20,~~047~~020,~~231~~997.3660 Scheduled Principal ~~450~~419,~~491~~114.5026 Unscheduled Principal 3829,~~016~~840,~~225~~796.4075 Unpaid Principal Balance Of Outstanding Mortgage Loans With Or Less Than Or Equal To 80% ~~420~~390,~~750~~682,~~267~~990.0517 Greater Than 80%, less than or equal to 85% 1,~~478~~476,~~463~~615.9826 Greater than 85%, less than or equal to 95% 5,~~729~~501,~~672~~778.9998 Greater than 95% 381,~~782~~345.0934

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