8-K 1 wfm05004_10509.txt 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 26, 2005 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2005-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-122307-07 Pooling and Servicing Agreement) (Commission 54-2169516 (State or other File Number) 54-2169517 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank, 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) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On September 26, 2005 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2005-4 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2005-4 Trust, relating to the September 26, 2005 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 2005-4 Trust (Registrant) By: Wells Fargo Bank, N.A. as Master Servicer By: /s/ Beth Belfield as Officer By: Beth Belfield as Officer Date: 9/27/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2005-4 Trust, relating to the September 26, 2005 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 78/2931/2005 Distribution Date: 89/2526/2005 Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Series 2005-4 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Class CUSIP Description Rate Balance Distribution A-PO 94982NAR5 SEN 0.00000% ~~977~~963,~~744~~561.1152 0.00 A-1 94982NAA2 SEN 3.~~76000~~94125% 37,~~546~~415,~~318~~529.6498 ~~117~~122,~~661~~905.1933 A-2 94982NAB0 SEN 3.~~74000~~55875% 0.00 ~~117~~110,~~035~~977.3331 A-3 94982NAC8 SEN 5.00000% ~~109~~108,~~176~~653,~~874~~719.5893 ~~454~~452,~~965~~792.7371 A-4 94982NAD6 SEN 5.00000% 33,025,000.00 137,~~622~~625.9510 A-5 94982NAE4 SEN 5.00000% 7,983,400.00 33,~~268~~269.7123 A-6 94982NAF1 SEN 4.~~06000~~24125% 4948,~~016~~885,~~831~~359.3609 ~~165~~172,~~862~~805.9148 A-7 94982NAG9 SEN 109.~~11403~~39231% 12,~~309~~276,~~910~~892.1164 ~~103~~96,~~766~~104.4590 A-8 94982NAH7 SEN 8.00000% 5,~~514~~499,~~393~~602.1148 36,~~767~~669.6459 A-9 94982NAJ3 SEN 4.~~71000~~89125% 1918,~~272~~907,~~089~~457.3818 7577,~~653~~079.2831 A-10 94982NAK0 SEN 87.~~39668~~73210% 5,~~256~~156,~~013~~568.8186 3633,~~782~~230.5997 A-11 94982NAL8 SEN 5.50000% ~~1,777,978~~0.9700 ~~8,150~~0.1800 A-R 94982NAS3 SEN 5.50000% 0.00 0.00 A-LR 94982NAM6 SEN 5.50000% 0.00 0.00 B-1 94982NAN4 SUB 5.50000% 4,~~788~~783,~~166~~154.7296 21,~~948~~926.7512 B-2 94982NAP9 SUB 5.50000% 1,~~645~~643,~~185~~463.4039 7,~~541~~533.4668 B-3 94982NAQ7 SUB 5.50000% ~~898~~897,~~279~~338.2097 4,~~117~~113.6743 B-4 94982NAT1 SUB 5.50000% ~~598~~597,~~520~~894.8437 2,~~743~~740.5976 B-5 94982NAU8 SUB 5.50000% ~~448~~447,~~143~~674.7265 2,~~054~~052.2715 B-6 94982NAV6 SUB 5.50000% 449,~~810~~339.3958 2,~~061~~059.9179 Totals ~~290~~287,~~684~~585,~~660~~957.3460 1,~~328~~313,~~004~~885.6186

Certificateholder Distribution Summary (continued) Current Ending Cumulative Principal Realized Certificate Total Realized Class Distribution Loss Balance Distribution Losses A-PO 141,~~182~~103.5913 0.00 ~~963~~962,~~561~~458.5239 141,~~182~~103.5913 0.00 A-1 ~~130~~143,~~788~~383.6621 0.00 37,~~415~~272,~~529~~146.9877 ~~248~~266,~~449~~288.8554 0.00 A-2 0.00 0.00 0.00 ~~117~~110,~~035~~977.3331 0.00 A-3 ~~523~~573,~~154~~532.6586 0.00 108,~~653~~080,~~719~~187.9307 ~~978~~1,~~120~~026,325.3857 0.00 A-4 0.00 0.00 33,025,000.00 137,~~622~~625.9510 0.00 A-5 0.00 0.00 7,983,400.00 33,~~268~~269.7123 0.00 A-6 ~~131~~149,~~472~~734.27 0.00 48,~~885~~735,~~359~~624.0982 ~~297~~322,~~335~~539.1875 0.00 A-7 3337,~~017~~603.4772 0.00 12,~~276~~239,~~892~~288.6491 ~~136~~133,~~783~~708.9262 0.00 A-8 1416,~~790~~845.6310 0.00 5,~~499~~482,~~602~~757.4837 5153,~~558~~514.2769 0.00 A-9 ~~364~~2,~~632~~746,305.2177 0.00 1816,~~907~~161,~~457~~151.1841 ~~440~~2,~~285~~823,385.4908 0.00 A-10 99748,~~444~~990.9598 0.00 54,~~156~~407,~~568~~577.8688 ~~136~~782,~~227~~221.5495 0.00 A-11 ~~1,777,978~~0.9700 0.00 0.00 ~~1,786,129~~0.1500 0.00 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 5,~~011~~016.7610 0.00 4,~~783~~778,~~154~~138.9686 26,~~960~~942.5122 0.00 B-2 1,~~722~~723.0150 0.00 1,~~643~~641,~~463~~739.3989 9,~~263~~257.4718 0.00 B-3 ~~940~~941.2304 0.00 ~~897~~896,~~338~~397.9793 5,~~057~~054.9047 0.00 B-4 ~~626~~627.4701 0.00 597,~~894~~267.3736 3,~~370~~367.0677 0.00 B-5 469.0748 0.00 447,~~674~~205.6518 2,~~523~~521.3463 0.00 B-6 ~~470~~471.7718 0.04 ~~449~~448,~~339~~868.5835 2,~~532~~530.6897 0.1620 Totals 34,~~098~~426,~~702~~747.7135 0.04 ~~287~~283,~~585~~159,~~957~~210.6019 45,~~426~~740,~~707~~633.3221 0.1620 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 984,534.18 ~~977~~963,~~744~~561.1152 1,~~061~~067.5910 ~~13,121~~36.0103 0.00 0.00 A-1 37,942,600.00 37,~~546~~415,~~318~~529.6498 129,~~503~~458.3344 ~~118~~133,~~285~~924.3378 0.00 0.00 A-2 0.00 0.00 0.00 0.00 0.00 0.00 A-3 110,762,000.00 ~~109~~108,~~176~~653,~~874~~719.5893 5037,~~013~~833.3275 ~~473~~535,~~141~~699.3311 0.00 0.00 A-4 33,025,000.00 33,025,000.00 0.00 0.00 0.00 0.00 A-5 7,983,400.00 7,983,400.00 0.00 0.00 0.00 0.00 A-6 49,358,466.00 4948,~~016~~885,~~831~~359.3609 129,~~568~~877.6839 ~~118~~139,~~903~~856.5988 0.00 0.00 A-7 12,395,707.00 12,~~309~~276,~~910~~892.1164 32,~~156~~480.4557 2935,~~861~~123.0215 0.00 0.00 A-8 5,552,827.00 5,~~514~~499,~~393~~602.1148 1,~~413~~111.9821 1315,~~376~~733.6590 0.00 0.00 A-9 19,889,580.00 1918,~~272~~907,~~089~~457.3818 34181,~~858~~163.6622 ~~329~~2,~~773~~565,142.5556 0.00 0.00 A-10 5,424,420.00 5,~~256~~156,~~013~~568.8186 949,~~506~~408.8905 89699,~~938~~582.0693 0.00 0.00 A-11 8,284,000.00 ~~1,777,978~~0.9700 ~~170,753~~0.0500 ~~1,615,376~~0.1000 ~~(8,150~~0.~~18)~~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 4,808,000.00 4,~~788~~783,~~166~~154.7296 5,~~011~~016.7610 0.00 0.00 0.00 B-2 1,652,000.00 1,~~645~~643,~~185~~463.4039 1,~~722~~723.0150 0.00 0.00 0.00 B-3 902,000.00 ~~898~~897,~~279~~338.2097 ~~940~~941.2304 0.00 0.00 0.00 B-4 601,000.00 ~~598~~597,~~520~~894.8437 ~~626~~627.4701 0.00 0.00 0.00 B-5 450,000.00 ~~448~~447,~~143~~674.7265 469.0748 0.00 0.00 0.00 B-6 451,673.57 449,~~810~~339.3958 ~~470~~471.7718 0.00 0.00 0.04 Totals 300,467,307.75 ~~290~~287,~~684~~585,~~660~~957.3460 ~~305~~301,~~076~~648.2604 24,~~801~~125,~~776~~099.6434 ~~(8,150~~0.~~18)~~00 0.04 (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 141,~~182~~103.5913 ~~963~~962,~~561~~458.5239 0.~~97869789~~97757743 141,~~182~~103.5913 A-1 ~~130~~143,~~788~~383.6621 37,~~415~~272,~~529~~146.9877 0.~~98610875~~98232980 ~~130~~143,~~788~~383.6621 A-2 0.00 0.00 0.00000000 0.00 A-3 ~~523~~573,~~154~~532.6586 108,~~653~~080,~~719~~187.9307 0.~~98096567~~97578761 ~~523~~573,~~154~~532.6586 A-4 0.00 33,025,000.00 1.00000000 0.00 A-5 0.00 7,983,400.00 1.00000000 0.00 A-6 ~~131~~149,~~472~~734.27 48,~~885~~735,~~359~~624.0982 0.~~99041488~~98738127 ~~131~~149,~~472~~734.27 A-7 3337,~~017~~603.4772 12,~~276~~239,~~892~~288.6491 0.~~99041488~~98738127 3337,~~017~~603.4772 A-8 1416,~~790~~845.6310 5,~~499~~482,~~602~~757.4837 0.~~99041488~~98738127 1416,~~790~~845.6310 A-9 ~~364~~2,~~632~~746,305.2177 1816,~~907~~161,~~457~~151.1841 0.~~95062124~~81254362 ~~364~~2,~~632~~746,305.2177 A-10 99748,~~444~~990.9598 54,~~156~~407,~~568~~577.8688 0.~~95062124~~81254362 99748,~~444~~990.9598 A-11 ~~1,777,978~~0.9700 0.00 0.00000000 ~~1,777,978~~0.9700 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 B-1 5,~~011~~016.7610 4,~~783~~778,~~154~~138.9686 0.~~99483256~~99378928 5,~~011~~016.7610 B-2 1,~~722~~723.0150 1,~~643~~641,~~463~~739.3989 0.~~99483256~~99378928 1,~~722~~723.0150 B-3 ~~940~~941.2304 ~~897~~896,~~338~~397.9793 0.~~99483256~~99378928 ~~940~~941.2304 B-4 ~~626~~627.4701 597,~~894~~267.3736 0.~~99483256~~99378928 ~~626~~627.4701 B-5 469.0748 447,~~674~~205.6518 0.~~99483256~~99378929 469.0748 B-6 ~~470~~471.8122 ~~449~~448,~~339~~868.5835 0.~~99483257~~99378928 ~~470~~471.7718 Totals 34,~~098~~426,~~702~~747.7539 ~~287~~283,~~585~~159,~~957~~210.6019 0.~~95712895~~94239607 34,~~098~~426,~~702~~747.7135

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 984,534.18 ~~993~~978.~~10326636~~69788533 1.~~07826627~~08386283 130.~~32712492~~03659599 0.00000000 A-1 37,942,600.00 ~~989~~986.~~55576687~~10875322 0.~~32953277~~24928286 3.~~11748088~~52966797 0.00000000 A-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-3 110,762,000.00 ~~985~~980.~~68890576~~96567352 0.~~45153861~~34157698 4.~~27169363~~83648824 0.00000000 A-4 33,025,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 7,983,400.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-6 49,358,466.00 ~~993~~990.~~07849964~~41487817 0.~~25464081~~20011542 2.~~40898066~~83349325 0.00000000 A-7 12,395,707.00 ~~993~~990.~~07849968~~41487831 0.~~25464058~~20011525 2.~~40898079~~83349308 0.00000000 A-8 5,552,827.00 ~~993~~990.~~07850037~~41487876 0.~~25464146~~20011609 2.~~40898015~~83349364 0.00000000 A-9 19,889,580.00 ~~968~~950.~~95406439~~62123886 19.~~75260916~~10844875 16128.~~58021688~~96916677 0.00000000 A-10 5,424,420.00 ~~968~~950.~~95406514~~62123877 19.~~75260950~~10844846 16128.~~58021687~~96916721 0.00000000 A-11 8,284,000.00 ~~214~~0.~~62807460~~00000000 200.~~61239136~~00000000 ~~194~~0.~~99952921~~00000000 (0.~~98384597)~~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 4,808,000.00 ~~995~~994.~~87494176~~83256240 1.~~04237937~~04328203 0.00000000 0.00000000 B-2 1,652,000.00 ~~995~~994.~~87493947~~83256053 1.~~04237893~~04328087 0.00000000 0.00000000 B-3 902,000.00 ~~995~~994.~~87494457~~83256098 1.~~04238359~~04328160 0.00000000 0.00000000 B-4 601,000.00 ~~995~~994.~~87494176~~83256240 1.~~04237937~~04327787 0.00000000 0.00000000 B-5 450,000.00 ~~995~~994.~~87493333~~83255556 1.~~04237778~~04328889 0.00000000 0.00000000 B-6 451,673.57 ~~995~~994.~~87494128~~83257344 1.~~04227927~~04318701 0.00000000 0.00000000 (2) Per $1,000 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 141.~~40538103~~12045881 ~~978~~977.~~69788533~~57742651 0.~~97869789~~97757743 141.~~40538103~~12045881 A-1 0.00000000 3.~~44701365~~77895057 ~~986~~982.~~10875322~~32980265 0.~~98610875~~98232980 3.~~44701365~~77895057 A-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-3 0.00000000 45.~~72323225~~17806522 ~~980~~975.~~96567352~~78760830 0.~~98096567~~97578761 45.~~72323225~~17806522 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-6 0.00000000 23.~~66362147~~03360866 ~~990~~987.~~41487817~~38126951 0.~~99041488~~98738127 23.~~66362147~~03360866 A-7 0.00000000 23.~~66362137~~03360833 ~~990~~987.~~41487831~~38126918 0.~~99041488~~98738127 23.~~66362137~~03360833 A-8 0.00000000 23.~~66362161~~03360793 ~~990~~987.~~41487876~~38126904 0.~~99041488~~98738127 23.~~66362161~~03360793 A-9 0.00000000 18138.~~33282603~~07761501 ~~950~~812.~~62123886~~54362385 0.~~95062124~~81254362 18138.~~33282603~~07761501 A-10 0.00000000 18138.~~33282637~~07761567 ~~950~~812.~~62123877~~54362310 0.~~95062124~~81254362 18138.~~33282637~~07761567 A-11 0.00000000 ~~214~~0.~~62807460~~00000000 0.00000000 0.00000000 ~~214~~0.~~62807460~~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.~~04237937~~04328203 ~~994~~993.~~83256240~~78928037 0.~~99483256~~99378928 1.~~04237937~~04328203 B-2 0.00000000 1.~~04237893~~04328087 ~~994~~993.~~83256053~~78927966 0.~~99483256~~99378928 1.~~04237893~~04328087 B-3 0.00000000 1.~~04238359~~04328160 ~~994~~993.~~83256098~~78927938 0.~~99483256~~99378928 1.~~04238359~~04328160 B-4 0.00000000 1.~~04237937~~04327787 ~~994~~993.~~83256240~~78928453 0.~~99483256~~99378928 1.~~04237937~~04327787 B-5 0.00000000 1.~~04237778~~04328889 ~~994~~993.~~83255556~~78928889 0.~~99483256~~99378929 1.~~04237778~~04328889 B-6 0.00008856 1.~~04236783~~04327557 ~~994~~993.~~83257344~~78927574 0.~~99483257~~99378928 1.~~04227927~~04318701 (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 984,534.18 0.00000% ~~977~~963,~~744~~561.1152 0.00 0.00 0.00 A-1 37,942,600.00 3.~~76000~~94125% 37,~~546~~415,~~318~~529.6498 ~~117~~122,~~645~~886.1363 0.00 0.00 A-2 0.00 3.~~74000~~55875% 37,~~546~~415,~~318~~529.6498 ~~117~~110,~~019~~960.3643 0.00 0.00 A-3 110,762,000.00 5.00000% ~~109~~108,~~176~~653,~~874~~719.5893 ~~454~~452,~~903~~723.6483 0.00 0.00 A-4 33,025,000.00 5.00000% 33,025,000.00 137,604.17 0.00 0.00 A-5 7,983,400.00 5.00000% 7,983,400.00 33,264.17 0.00 0.00 A-6 49,358,466.00 4.~~06000~~24125% 4948,~~016~~885,~~831~~359.3609 ~~165~~172,~~840~~779.2819 0.00 0.00 A-7 12,395,707.00 109.~~11403~~39231% 12,~~309~~276,~~910~~892.1164 ~~103~~96,~~752~~090.2928 0.00 0.00 A-8 5,552,827.00 8.00000% 5,~~514~~499,~~393~~602.1148 36,~~762~~664.6202 0.00 0.00 A-9 19,889,580.00 4.~~71000~~89125% 1918,~~272~~907,~~089~~457.3818 7577,~~642~~067.9558 0.00 0.00 A-10 5,424,420.00 87.~~39668~~73210% 5,~~256~~156,~~013~~568.8186 3633,~~777~~225.5792 0.00 0.00 A-11 8,284,000.00 5.50000% ~~1,777,978~~0.9700 ~~8,149~~0.0700 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 4,808,000.00 5.50000% 4,~~788~~783,~~166~~154.7296 21,~~945~~922.7679 0.00 0.00 B-2 1,652,000.00 5.50000% 1,~~645~~643,~~185~~463.4039 7,~~540~~532.4354 0.00 0.00 B-3 902,000.00 5.50000% ~~898~~897,~~279~~338.2097 4,~~117~~112.1180 0.00 0.00 B-4 601,000.00 5.50000% ~~598~~597,~~520~~894.8437 2,~~743~~740.2235 0.00 0.00 B-5 450,000.00 5.50000% ~~448~~447,~~143~~674.7265 2,~~053~~051.9984 0.00 0.00 B-6 451,673.57 5.50000% 449,~~810~~339.3958 2,~~061~~059.6347 0.00 0.00 Totals 300,467,307.75 1,~~327~~313,~~823~~686.3901 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 ~~963~~962,~~561~~458.5239 A-1 (1618.0570) 0.00 ~~117~~122,~~661~~905.1933 0.00 37,~~415~~272,~~529~~146.9877 A-2 (1516.9788) 0.00 ~~117~~110,~~035~~977.3331 0.00 37,~~415~~272,~~529~~146.9877 A-3 (6268.0988) 0.00 ~~454~~452,~~965~~792.7371 0.00 108,~~653~~080,~~719~~187.9307 A-4 (1820.7893) 0.00 137,~~622~~625.9510 0.00 33,025,000.00 A-5 (45.5405) 0.00 33,~~268~~269.7123 0.00 7,983,400.00 A-6 (2226.6429) 0.00 ~~165~~172,~~862~~805.9148 0.00 48,~~885~~735,~~359~~624.0982 A-7 (14.1662) 0.00 ~~103~~96,~~766~~104.4590 0.00 12,~~276~~239,~~892~~288.6491 A-8 (5.0158) 0.00 36,~~767~~669.6459 0.00 5,~~499~~482,~~602~~757.4837 A-9 (1011.3272) 0.00 7577,~~653~~079.2831 0.00 1816,~~907~~161,~~457~~151.1841 A-10 (5.0105) 0.00 3633,~~782~~230.5997 0.00 54,~~156~~407,~~568~~577.8688 A-11 (10.~~11)~~00 0.00 ~~8,150~~0.1800 0.00 0.00 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 (23.9832) 0.00 21,~~948~~926.7512 0.00 4,~~783~~778,~~154~~138.9686 B-2 (1.0314) 0.00 7,~~541~~533.4668 0.00 1,~~643~~641,~~463~~739.3989 B-3 (0.5662) 0.00 4,~~117~~113.6743 0.00 ~~897~~896,~~338~~397.9793 B-4 (0.3742) 0.00 2,~~743~~740.5976 0.00 597,~~894~~267.3736 B-5 (0.2831) 0.00 2,~~054~~052.2715 0.00 447,~~674~~205.6518 B-6 (0.2831) 0.00 2,~~061~~059.9179 0.00 ~~449~~448,~~339~~868.5835 Totals (~~181~~199.1882) 0.00 1,~~328~~313,~~004~~885.6186 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 984,534.18 0.00000% ~~993~~978.~~10326636~~69788533 0.00000000 0.00000000 0.00000000 A-1 37,942,600.00 3.~~76000~~94125% ~~989~~986.~~55576687~~10875322 3.~~10060802~~23875090 0.00000000 0.00000000 A-2 0.00 3.~~74000~~55875% ~~989~~986.~~55576687~~10875322 32.~~08411548~~92442874 0.00000000 0.00000000 A-3 110,762,000.00 5.00000% ~~985~~980.~~68890576~~96567352 4.~~10703707~~08735695 0.00000000 0.00000000 A-4 33,025,000.00 5.00000% 1000.00000000 4.16666677 0.00000000 0.00000000 A-5 7,983,400.00 5.00000% 1000.00000000 4.16666708 0.00000000 0.00000000 A-6 49,358,466.00 4.~~06000~~24125% ~~993~~990.~~07849964~~41487817 3.~~35991560~~50049756 0.00000000 0.00000000 A-7 12,395,707.00 109.~~11403~~39231% ~~993~~990.~~07849968~~41487831 87.~~37001794~~75189991 0.00000000 0.00000000 A-8 5,552,827.00 8.00000% ~~993~~990.~~07850037~~41487876 6.~~62052320~~60276648 0.00000000 0.00000000 A-9 19,889,580.00 4.~~71000~~89125% ~~968~~950.~~95406439~~62123886 3.~~80314466~~87477161 0.00000000 0.00000000 A-10 5,424,420.00 87.~~39668~~73210% ~~968~~950.~~95406514~~62123877 6.~~78000044~~12524841 0.00000000 0.00000000 A-11 8,284,000.00 5.50000% ~~214~~0.~~62807460~~00000000 0.~~98371197~~00000000 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 4,808,000.00 5.50000% ~~995~~994.~~87494176~~83256240 4.~~56442596~~55964850 0.00000000 0.00000000 B-2 1,652,000.00 5.50000% ~~995~~994.~~87493947~~83256053 4.~~56442494~~55964891 0.00000000 0.00000000 B-3 902,000.00 5.50000% ~~995~~994.~~87494457~~83256098 4.~~56442350~~55964523 0.00000000 0.00000000 B-4 601,000.00 5.50000% ~~995~~994.~~87494176~~83256240 4.~~56442596~~55965058 0.00000000 0.00000000 B-5 450,000.00 5.50000% ~~995~~994.~~87493333~~83255556 4.~~56442222~~55964444 0.00000000 0.00000000 B-6 451,673.57 5.50000% ~~995~~994.~~87494128~~83257344 4.~~56442470~~55964249 0.00000000 0.00000000 (5) Per $1,000 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 ~~978~~977.~~69788533~~57742651 A-1 (0.~~00042301~~00049285) 0.00000000 3.~~10103129~~23924375 0.00000000 ~~986~~982.~~10875322~~32980265 A-2 (0.~~00042090~~00044488) 0.00000000 32.~~08453638~~92487362 0.00000000 ~~986~~982.~~10875322~~32980265 A-3 (0.~~00056057~~00062187) 0.00000000 4.~~10759764~~08797882 0.00000000 ~~980~~975.~~96567352~~78760830 A-4 (0.~~00056866~~00063376) 0.00000000 4.~~16723543~~16730053 0.00000000 1000.00000000 A-5 (0.~~00056868~~00063256) 0.00000000 4.~~16723576~~16730090 0.00000000 1000.00000000 A-6 (0.~~00045869~~00053263) 0.00000000 3.~~36037408~~50103020 0.00000000 ~~990~~987.~~41487817~~38126951 A-7 (0.~~00114233~~00117944) 0.00000000 87.~~37116027~~75307935 0.00000000 ~~990~~987.~~41487831~~38126918 A-8 (0.~~00090224~~00100489) 0.00000000 6.~~62142725~~60376958 0.00000000 ~~990~~987.~~41487876~~38126904 A-9 (0.~~00051886~~00058925) 0.00000000 3.~~80366403~~87536137 0.00000000 ~~950~~812.~~62123886~~54362385 A-10 (0.~~00092360~~00093098) 0.00000000 6.~~78092589~~12617939 0.00000000 ~~950~~812.~~62123877~~54362310 A-11 (0.~~00013399)~~00000000 0.00000000 0.~~98384597~~00000000 0.00000000 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.~~00061980~~00069052) 0.00000000 4.~~56504784~~56034110 0.00000000 ~~994~~993.~~83256240~~78928037 B-2 (0.~~00062349~~00069007) 0.00000000 4.~~56504843~~56033898 0.00000000 ~~994~~993.~~83256053~~78927966 B-3 (0.~~00062084~~00068736) 0.00000000 4.~~56504435~~56034368 0.00000000 ~~994~~993.~~83256098~~78927938 B-4 (0.~~00061564~~00069884) 0.00000000 4.~~56504160~~56033278 0.00000000 ~~994~~993.~~83256240~~78928453 B-5 (0.~~00062222~~00068889) 0.00000000 4.~~56504444~~56033333 0.00000000 ~~994~~993.~~83255556~~78928889 B-6 (0.~~00061992~~00068634) 0.00000000 4.~~56504462~~56035096 0.00000000 ~~994~~993.~~83257344~~78927574 (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 024,222.0084 Deposits Payments of Interest and Principal 45,~~549~~716,~~308~~591.3501 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 060,598.0004 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 45,~~549~~777,~~308~~189.3505 Withdrawals Reimbursement for Servicer Advances ~~37,821~~0.8700 Payment of Service Fee 60,~~556~~778.3069 Payment of Interest and Principal 45,~~426~~740,~~707~~633.3422 Total Withdrawals (Pool Distribution Amount) 45,~~525~~801,~~085~~411.5191 Ending Balance ~~24,222~~0.8400

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 21,~~243~~332.5909 Servicing Fee Support 21,~~424~~531.8092 Non-Supported Prepayment/Curtailment Interest Shortfall (~~181~~199.2183)

SERVICING FEES Gross Servicing Fee 6059,~~558~~914.7505 Master Servicing Fee 2,~~422~~396.3556 Supported Prepayment/Curtailment Interest Shortfall 21,~~424~~531.8092 Net Servicing Fee 60,~~556~~778.3069

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT 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 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 60 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 90 Days 0 0 10 0 10 0.00 0.00 ~~516,740~~0.9700 0.00 ~~516,740~~0.9700 120 Days 0 0 01 0 01 0.00 0.00 0516,740.0097 0.00 0516,740.0097 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 0 0 1 0 1 0.00 0.00 516,740.97 0.00 516,740.97 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% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 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.~~179211~~000000% 0.000000% 0.~~179211~~000000% 0.000000% 0.000000% 0.~~178647~~000000% 0.000000% 0.~~178647~~000000% 120 Days 0.000000% 0.000000% 0.~~000000~~182149% 0.000000% 0.~~000000~~182149% 0.000000% 0.000000% 0.~~000000~~181082% 0.000000% 0.~~000000~~181082% 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% 0.000000% 0.~~179211~~182149% 0.000000% 0.~~179211~~182149% 0.000000% 0.000000% 0.~~178647~~181082% 0.000000% 0.~~178647~~181082%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 39103,~~449~~417.8457

SUBORDINATION LEVEL/CREDIT ENHANCEMENT/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 8,864,673.57 2.95029554% 8,~~818~~809,~~865~~617.9257 3.~~06651479~~11118878% 96.~~933485~~888811% 100.000000% Class B-1 4,056,673.57 1.35012145% 4,~~035~~031,~~710~~478.9671 1.~~40330599~~42374981% 1.~~663209~~687439% 0.000000% Class B-2 2,404,673.57 0.80031122% 2,~~392~~389,~~247~~738.5782 0.~~83183741~~84395589% 0.~~571469~~579794% 0.000000% Class B-3 1,502,673.57 0.50011217% 1,~~494~~493,~~908~~340.6089 0.~~51981279~~52738560% 0.~~312025~~316570% 0.000000% Class B-4 901,673.57 0.30009041% ~~897~~896,~~014~~073.2353 0.~~31191169~~31645572% 0.~~207901~~210930% 0.000000% Class B-5 451,673.57 0.15032370% ~~449~~448,~~339~~868.5835 0.~~15624531~~15852154% 0.~~155666~~157934% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~156245~~158522% 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 5.~~854362~~854194% Weighted Average Net Coupon 5.~~482299~~482378% Weighted Average Pass-Through Rate 5.500000% Weighted Average Maturity(Stepdown Calculation) ~~354~~353 Beginning Scheduled Collateral Loan Count ~~564~~558 Number Of Loans Paid In Full 69 Ending Scheduled Collateral Loan Count ~~558~~549 Beginning Scheduled Collateral Balance ~~290~~287,~~684~~585,~~660~~957.3660 Ending Scheduled Collateral Balance ~~287~~283,~~585~~159,~~957~~210.6020 Ending Actual Collateral Balance at 2931-~~Jul~~Aug-2005 ~~289~~285,~~252~~363,~~908~~427.7753 Ending Scheduled Balance For Wells Fargo Serviced ~~286~~282,~~467~~042,~~830~~248.5054 Ending Scheduled Balance For Other Servicers 1,~~118~~116,~~127~~961.1066 Monthly P&I Constant 1,~~698~~682,~~181~~112.1102 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 45,~~376~~690,~~823~~765.6527 Ending Scheduled Balance for Premium Loans ~~176~~171,~~182~~885,~~717~~632.2312 Ending scheduled Balance For discounted Loans 111,~~403~~273,~~240~~578.3708 Scheduled Principal ~~304~~301,~~297~~648.1508 Unscheduled Principal 24,~~794~~125,~~405~~099.6132 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% ~~284~~280,~~739~~329,~~185~~701.0748 Greater Than 80%, less than or equal to 85% 0.00 Greater than 85%, less than or equal to 95% 2,~~842~~840,~~684~~762.1588 Greater than 95% 0.00

Filing Compare · Wells Fargo Asset Securities Corp Mortgage Pass-Through Certificates Series 2005-4