8-K 1 wfm01020.txt DECEMBER 8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 Form 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 26, 2001 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2001-20 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-62184-02 Pooling and Servicing Agreement) (Commission 52-2345429 (State or other File Number) 52-2345426 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank Minnesota, N.A. 11000 Broken Land Parkway Columbia, MD 21044 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 Former name or former address, if changed since last report) ITEM 5. Other Events On December 26, 2001 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2001-20 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 2001-20 Trust, relating to the December 26, 2001 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 2001-20 Trust By: Wells Fargo Bank Minnesota, NA, as Master Servicer By: /s/ Beth Belfield, Officer By: Beth Belfield, Officer Date: 1/8/02 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2001-20 Trust, relating to the December 26, 2001 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 1011/3130/01 Distribution Date: 1112/26/01 WFMBS Series: 2001-20 Contact: Customer Service - SecuritiesLink Wells Fargo Bank Minnesota, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) 846-8130 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 94977KAG2 PO 0.00000% ~~176~~175,~~503~~875.4841 0.00 ~~628~~639.0790 A-1 94977KAA5 SEQ 6.25000% ~~124~~118,~~367~~567,~~837~~934.8421 ~~647~~617,~~749~~541.1632 56,~~799~~119,~~903~~599.6315 A-2 94977KAB3 SEQ 6.00000% 70,503,000.00 352,515.00 0.00 A-3 94977KAC1 SEQ 6.25000% 15,712,000.00 81,833.33 0.00 A-4 94977KAD9 SEQ 6.25000% 4743,~~044~~895,~~533~~682.8683 ~~245~~228,~~023~~623.6135 36,~~148~~715,~~851~~350.0340 A-5 94977KAE7 SEQ 6.25000% ~~3,215,681~~0.0600 ~~16,748~~0.3400 ~~3,215,681~~0.0600 A-6 94977KAF4 SEQ 6.25000% 0.00 14,688.13 0.00 A-R 94977KAH0 SEQ 6.25000% 0.00 0.00 0.00 A-LR 94977KAJ6 RES 6.25000% 0.00 0.00 0.00 B-1 94977KAK3 SUB 6.25000% 2,~~611~~603,~~291~~065.0652 13,~~600~~557.4763 8,~~225~~250.5488 B-2 94977KAL1 SUB 6.25000% ~~823~~821,~~729~~134.1844 4,~~290~~276.2674 2,~~594~~602.7473 B-3 94977KAM9 SUB 6.25000% ~~550~~548,~~477~~743.6465 2,~~867~~858.0704 1,~~734~~739.0034 B-4 94977KAN7 SUB 6.25000% ~~274~~273,~~245~~381.1831 1,~~428~~423.3686 ~~863~~866.8753 B-5 94977KAP2 SUB 6.25000% ~~275~~274,~~238~~371.83 1,~~433~~429.5402 ~~867~~869.0067 B-6 94977KAQ0 SUB 6.25000% ~~275~~274,~~343~~476.6734 1,~~986~~429.3356 ~~344~~366.3665 Totals ~~265~~253,~~829~~649,~~881~~665.8054 1,~~384~~320,~~163~~175.6098 12,~~179~~850,~~693~~285.3025

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 175,~~875~~235.4151 ~~628~~639.0790 0.00 A-1 0.00 ~~118~~112,~~567~~448,~~934~~335.2106 6,~~447~~737,~~652~~140.7947 0.00 A-2 0.00 70,503,000.00 352,515.00 0.00 A-3 0.00 15,712,000.00 81,833.33 0.00 A-4 0.00 4337,~~895~~180,~~682~~332.8344 36,~~393~~943,~~874~~973.6475 0.00 A-5 0.00 0.00 ~~3,232,429~~0.4000 0.00 A-6 0.00 0.00 14,688.13 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 2,~~603~~594,~~065~~814.5265 21,~~826~~808.0151 0.00 B-2 0.00 ~~821~~818,~~134~~531.4471 6,~~885~~879.0047 0.00 B-3 0.00 ~~548~~547,~~743~~004.6530 4,~~601~~597.0738 0.00 B-4 0.00 ~~273~~272,~~381~~514.3178 2,~~292~~290.2339 0.00 B-5 0.00 ~~274~~273,~~371~~502.8316 2,~~300~~298.5469 0.00 B-6 ~~522~~503.9735 ~~274~~273,~~476~~606.34 21,~~330~~796.6921 2,~~284~~788.8217 Totals ~~522~~503.9735 ~~253~~240,~~649~~798,~~665~~876.5495 1314,~~563~~170,~~856~~461.9023 2,~~284~~788.8217 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 177,769.56 ~~176~~175,~~503~~875.4841 ~~615~~618.0635 1321.0155 0.00 0.00 A-1 129,500,000.00 ~~124~~118,~~367~~567,~~837~~934.8421 ~~391~~375,~~757~~822.4904 5,~~408~~743,~~146~~777.1411 0.00 0.00 A-2 70,503,000.00 70,503,000.00 0.00 0.00 0.00 0.00 A-3 15,712,000.00 15,712,000.00 0.00 0.00 0.00 0.00 A-4 48,360,000.00 4743,~~044~~895,~~533~~682.8683 ~~212~~412,~~690~~408.7783 26,~~936~~302,~~160~~941.2657 0.00 0.00 A-5 7,532,000.00 ~~3,215,681~~0.0600 ~~218,336~~0.1200 ~~3,014,093~~0.2900 ~~(16,748~~0.~~34)~~00 0.00 A-6 0.00 0.00 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 2,628,000.00 2,~~611~~603,~~291~~065.0652 8,~~225~~250.5488 0.00 0.00 0.00 B-2 829,000.00 ~~823~~821,~~729~~134.1844 2,~~594~~602.7473 0.00 0.00 0.00 B-3 554,000.00 ~~550~~548,~~477~~743.6465 1,~~734~~739.0034 0.00 0.00 0.00 B-4 276,000.00 ~~274~~273,~~245~~381.1831 ~~863~~866.8753 0.00 0.00 0.00 B-5 277,000.00 ~~275~~274,~~238~~371.83 ~~867~~869.0067 0.00 0.00 0.00 B-6 277,105.52 ~~275~~274,~~343~~476.6734 ~~344~~366.3665 0.00 0.00 ~~522~~503.9735 Totals 276,625,975.08 ~~265~~253,~~829~~649,~~881~~665.8054 ~~838~~803,~~028~~545.9502 1112,~~358~~046,~~412~~740.7023 ~~(16,748~~0.~~34)~~00 ~~522~~503.9735 (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 ~~628~~639.0790 175,~~875~~235.4151 0.~~98934491~~98574531 ~~628~~639.0790 A-1 56,~~799~~119,~~903~~599.6315 ~~118~~112,~~567~~448,~~934~~335.2106 0.~~91558250~~86832691 56,~~799~~119,~~903~~599.6315 A-2 0.00 70,503,000.00 1.00000000 0.00 A-3 0.00 15,712,000.00 1.00000000 0.00 A-4 36,~~148~~715,~~851~~350.0340 4337,~~895~~180,~~682~~332.8344 0.~~90768575~~76882408 36,~~148~~715,~~851~~350.0340 A-5 ~~3,215,681~~0.0600 0.00 0.00000000 ~~3,215,681~~0.0600 A-6 0.00 0.00 0.00000000 0.00 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 B-1 8,~~225~~250.5488 2,~~603~~594,~~065~~814.5265 0.~~99051199~~98737239 8,~~225~~250.5488 B-2 2,~~594~~602.7473 ~~821~~818,~~134~~531.4471 0.~~99051199~~98737239 2,~~594~~602.7473 B-3 1,~~734~~739.0034 ~~548~~547,~~743~~004.6530 0.~~99051200~~98737238 1,~~734~~739.0034 B-4 ~~863~~866.8753 ~~273~~272,~~381~~514.3178 0.~~99051199~~98737239 ~~863~~866.8753 B-5 ~~867~~869.0067 ~~274~~273,~~371~~502.8316 0.~~99051202~~98737242 ~~867~~869.0067 B-6 ~~867~~870.3300 ~~274~~273,~~476~~606.34 0.~~99051199~~98737239 ~~344~~366.3665 Totals 12,~~180~~850,~~216~~788.2760 ~~253~~240,~~649~~798,~~665~~876.5495 0.~~91694088~~87048542 12,~~179~~850,~~693~~285.3025

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 177,769.56 ~~992~~989.~~87797078~~34491372 3.~~45987243~~47837954 0.~~07318463~~12122435 0.00000000 A-1 129,500,000.00 ~~960~~915.~~36940417~~58250355 32.~~02515436~~90210069 4144.~~76174625~~35349120 0.00000000 A-2 70,503,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 15,712,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-4 48,360,000.00 ~~972~~907.~~79846691~~68574917 48.~~39807217~~52789144 60130.~~71464557~~33377936 0.00000000 A-5 7,532,000.00 ~~426~~0.~~93588157~~00000000 280.~~98780138~~00000000 ~~400~~0.~~17170605~~00000000 (20.~~22362454)~~00000000 A-6 0.00 0.00000000 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 2,628,000.00 ~~993~~990.~~64195586~~51199391 3.~~12996195~~13960426 0.00000000 0.00000000 B-2 829,000.00 ~~993~~990.~~64195416~~51199035 3.~~12996381~~13960193 0.00000000 0.00000000 B-3 554,000.00 ~~993~~990.~~64194946~~51200361 3.~~12996390~~13960289 0.00000000 0.00000000 B-4 276,000.00 ~~993~~990.~~64195652~~51199275 3.~~12996377~~13960145 0.00000000 0.00000000 B-5 277,000.00 ~~993~~990.~~64198556~~51202166 3.~~12996390~~13960289 0.00000000 0.00000000 B-6 277,105.52 ~~993~~990.~~64195271~~51198980 1.~~24270350~~32314217 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 3.~~53305707~~59960389 ~~989~~985.~~34491372~~74530983 0.~~98934491~~98574531 3.~~53305707~~59960389 A-1 0.00000000 4447.~~78690062~~25559189 ~~915~~868.~~58250355~~32691166 0.~~91558250~~86832691 4447.~~78690062~~25559189 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-4 0.00000000 65138.~~11271774~~86167080 ~~907~~768.~~68574917~~82407858 0.~~90768575~~76882408 65138.~~11271774~~86167080 A-5 0.00000000 ~~426~~0.~~93588157~~00000000 0.00000000 0.00000000 ~~426~~0.~~93588157~~00000000 A-6 0.00000000 0.00000000 0.00000000 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 0.00000000 3.~~12996195~~13960426 ~~990~~987.~~51199391~~37239346 0.~~99051199~~98737239 3.~~12996195~~13960426 B-2 0.00000000 3.~~12996381~~13960193 ~~990~~987.~~51199035~~37238842 0.~~99051199~~98737239 3.~~12996381~~13960193 B-3 0.00000000 3.~~12996390~~13960289 ~~990~~987.~~51200361~~37238267 0.~~99051200~~98737238 3.~~12996390~~13960289 B-4 0.00000000 3.~~12996377~~13960145 ~~990~~987.~~51199275~~37239130 0.~~99051199~~98737239 3.~~12996377~~13960145 B-5 0.00000000 3.~~12996390~~13960289 ~~990~~987.~~51202166~~37241877 0.~~99051202~~98737242 3.~~12996390~~13960289 B-6 1.~~88725941~~81645606 3.~~12996291~~13959823 ~~990~~987.~~51198980~~37239157 0.~~99051199~~98737239 1.~~24270350~~32314217 (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 177,769.56 0.00000% ~~176~~175,~~503~~875.4841 0.00 0.00 0.00 A-1 129,500,000.00 6.25000% ~~124~~118,~~367~~567,~~837~~934.8421 ~~647~~617,~~749~~541.1632 0.00 0.00 A-2 70,503,000.00 6.00000% 70,503,000.00 352,515.00 0.00 0.00 A-3 15,712,000.00 6.25000% 15,712,000.00 81,833.33 0.00 0.00 A-4 48,360,000.00 6.25000% 4743,~~044~~895,~~533~~682.8683 ~~245~~228,~~023~~623.6135 0.00 0.00 A-5 7,532,000.00 6.25000% ~~3,215,681~~0.0600 ~~16,748~~0.3400 0.00 0.00 A-6 0.00 6.25000% 2,820,120.00 14,688.13 0.00 0.00 A-R 50.00 6.25000% 0.00 0.00 0.00 0.00 A-LR 50.00 6.25000% 0.00 0.00 0.00 0.00 B-1 2,628,000.00 6.25000% 2,~~611~~603,~~291~~065.0652 13,~~600~~557.4763 0.00 0.00 B-2 829,000.00 6.25000% ~~823~~821,~~729~~134.1844 4,~~290~~276.2674 0.00 0.00 B-3 554,000.00 6.25000% ~~550~~548,~~477~~743.6465 2,~~867~~858.0704 0.00 0.00 B-4 276,000.00 6.25000% ~~274~~273,~~245~~381.1831 1,~~428~~423.3686 0.00 0.00 B-5 277,000.00 6.25000% ~~275~~274,~~238~~371.83 1,~~433~~429.5402 0.00 0.00 B-6 277,105.52 6.25000% ~~275~~274,~~343~~476.6734 1,~~434~~429.0856 ~~552~~0.2500 0.00 Totals 276,625,975.08 1,~~383~~320,~~611~~175.3598 ~~552~~0.2500 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 0.00 175,~~875~~235.4151 A-1 0.00 0.00 ~~647~~617,~~749~~541.1632 0.00 ~~118~~112,~~567~~448,~~934~~335.2106 A-2 0.00 0.00 352,515.00 0.00 70,503,000.00 A-3 0.00 0.00 81,833.33 0.00 15,712,000.00 A-4 0.00 0.00 ~~245~~228,~~023~~623.6135 0.00 4337,~~895~~180,~~682~~332.8344 A-5 0.00 0.00 ~~16,748~~0.3400 0.00 0.00 A-6 0.00 0.00 14,688.13 0.00 2,820,120.00 A-R 0.00 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 B-1 0.00 0.00 13,~~600~~557.4763 0.00 2,~~603~~594,~~065~~814.5265 B-2 0.00 0.00 4,~~290~~276.2674 0.00 ~~821~~818,~~134~~531.4471 B-3 0.00 0.00 2,~~867~~858.0704 0.00 ~~548~~547,~~743~~004.6530 B-4 0.00 0.00 1,~~428~~423.3686 0.00 ~~273~~272,~~381~~514.3178 B-5 0.00 0.00 1,~~433~~429.5402 0.00 ~~274~~273,~~371~~502.8316 B-6 0.00 0.00 1,~~986~~429.3356 0.00 ~~274~~273,~~476~~606.34 Totals 0.00 0.00 1,~~384~~320,~~163~~175.6098 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 177,769.56 0.00000% ~~992~~989.~~87797078~~34491372 0.00000000 0.00000000 0.00000000 A-1 129,500,000.00 6.25000% ~~960~~915.~~36940417~~58250355 54.~~00192402~~76865884 0.00000000 0.00000000 A-2 70,503,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 A-3 15,712,000.00 6.25000% 1000.00000000 5.20833312 0.00000000 0.00000000 A-4 48,360,000.00 6.25000% ~~972~~907.~~79846691~~68574917 54.~~06665860~~72752998 0.00000000 0.00000000 A-5 7,532,000.00 6.25000% ~~426~~0.~~93588157~~00000000 20.~~22362454~~00000000 0.00000000 0.00000000 A-6 0.00 6.25000% 1000.00000000 5.20833511 0.00000000 0.00000000 A-R 50.00 6.25000% 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 6.25000% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 2,628,000.00 6.25000% ~~993~~990.~~64195586~~51199391 5.~~17521689~~15891553 0.00000000 0.00000000 B-2 829,000.00 6.25000% ~~993~~990.~~64195416~~51199035 5.~~17522316~~15891435 0.00000000 0.00000000 B-3 554,000.00 6.25000% ~~993~~990.~~64194946~~51200361 5.~~17521661~~15891697 0.00000000 0.00000000 B-4 276,000.00 6.25000% ~~993~~990.~~64195652~~51199275 5.~~17521739~~15891304 0.00000000 0.00000000 B-5 277,000.00 6.25000% ~~993~~990.~~64198556~~51202166 5.~~17523466~~15891697 0.00000000 0.00000000 B-6 277,105.52 6.25000% ~~993~~990.~~64195271~~51198980 5.~~17521268~~15890120 10.~~99292313~~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 ~~989~~985.~~34491372~~74530983 A-1 0.00000000 0.00000000 54.~~00192402~~76865884 0.00000000 ~~915~~868.~~58250355~~32691166 A-2 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 A-3 0.00000000 0.00000000 5.20833312 0.00000000 1000.00000000 A-4 0.00000000 0.00000000 54.~~06665860~~72752998 0.00000000 ~~907~~768.~~68574917~~82407858 A-5 0.00000000 0.00000000 20.~~22362454~~00000000 0.00000000 0.00000000 A-6 0.00000000 0.00000000 5.20833511 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 0.00000000 0.00000000 5.~~17521689~~15891553 0.00000000 ~~990~~987.~~51199391~~37239346 B-2 0.00000000 0.00000000 5.~~17522316~~15891435 0.00000000 ~~990~~987.~~51199035~~37238842 B-3 0.00000000 0.00000000 5.~~17521661~~15891697 0.00000000 ~~990~~987.~~51200361~~37238267 B-4 0.00000000 0.00000000 5.~~17521739~~15891304 0.00000000 ~~990~~987.~~51199275~~37239130 B-5 0.00000000 0.00000000 5.~~17523466~~15891697 0.00000000 ~~990~~987.~~51202166~~37241877 B-6 0.00000000 0.00000000 75.~~16813581~~15890120 0.00000000 ~~990~~987.~~51198980~~37239157 (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 ~~38,552~~0.3900 Deposits Payments of Interest and Principal 1314,~~216~~147,~~146~~901.7781 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans ~~310,932~~0.3900 Other Amounts (Servicer Advances) 54129,~~407~~044.7069 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 1314,~~581~~276,~~486~~946.8650 Withdrawals Reimbursement for Servicer Advances 054,407.0070 Payment of Service Fee 5652,~~182~~077.3657 Payment of Interest and Principal 1314,~~563~~170,~~856~~461.9023 Total Withdrawals (Pool Distribution Amount) 1314,~~620~~276,~~039~~946.2650 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 24,~~961~~341.4647 Servicing Fee Support 24,~~961~~341.4647 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

SERVICING FEES Gross Servicing Fee 5552,~~378~~826.1082 Master Servicing Fee 3,~~765~~592.7122 Supported Prepayment/Curtailment Interest Shortfall 24,~~961~~341.4647 Net Servicing Fee 5652,~~182~~077.3657

~~OTHER~~LOAN ~~INFORMATION~~STATUS ~~Current~~STRATIFICATION/CREDIT ~~Period~~ENHANCEMENT ~~Class~~STATEMENT ADELINQUENCY ~~Insufficient~~STATUS ~~Funds~~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 ~~Principal~~0.00 ~~Balance~~0.00 of0.00 ~~Contaminated~~30 ~~Properties~~Days 4 0 0 0 4 2,292,866.08 0.00 ~~Periodic~~0.00 ~~Advance~~0.00 ~~481~~2,~~285~~292,866.1108 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 4 0 0 0 4 2,292,866.08 0.00 0.00 0.00 2,292,866.08 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 0.700525% 0.000000% 0.000000% 0.000000% 0.700525% 0.922168% 0.000000% 0.000000% 0.000000% 0.922168% 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 0.700525% 0.000000% 0.000000% 0.000000% 0.700525% 0.922168% 0.000000% 0.000000% 0.000000% 0.922168%

~~SUBORDINATION~~OTHER ~~LEVEL/CLASS~~INFORMATION ~~PERCENTAGE AND PREPAYMENT PERCENTAGE~~ Current ~~Original~~Period ~~$ Original % Current $ Current %~~ Class% ~~Prepayment% Class~~ A ~~4,841,105.52~~Insufficient ~~1.75005457%~~Funds ~~4,795,173.09 1.89047089% 98.108217% 100.000000% Class B-1 2,213,105.52~~ 0.~~80003533%~~00 ~~2,192,107.57~~Principal ~~0.86422648%~~Balance ~~1.026956%~~of ~~0.000000%~~Contaminated ~~Class~~Properties ~~B-2 1,384,105.52~~ 0.~~50035269%~~00 ~~1,370,973.13~~Periodic ~~0.54049869%~~Advance ~~0.323952% 0.000000% Class B-3 830~~547,~~105~~762.52 0.30008228% 822,229.48 0.32415950% 0.216489% 0.000000% Class B-4 554,105.52 0.20030856% 548,848.17 0.21638040% 0.107854% 0.000000% Class B-5 277,105.52 0.10017335% 274,476.34 0.10821080% 0.108245% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.108286% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure53

~~CREDIT~~SUBORDINATION ~~ENHANCEMENT~~LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % ~~Bankruptcy~~Class% Prepayment% Class A 4,841,105.52 1.75005457% 4,779,973.94 1.98504827% 98.013506% 100.000000% Class B-1 2,~~000~~213,105.0052 0.~~03614990~~80003533% ~~100~~2,~~000~~185,159.0029 0.~~03942446~~90746241% ~~Fraud~~1.078371% 50.000000% Class B-2 1,~~532~~384,~~519~~105.5052 20.~~00000000~~50035269% 51,~~532~~366,~~519~~627.5058 20.~~18116570~~56753902% ~~Special~~0.340171% ~~Hazard~~0.000000% Class B-3 830,~~189~~105.52 0.30008228% 819,~~490~~623.8128 10.~~15299758~~34037670% 30.227328% 0.000000% Class B-4 554,~~189~~105.52 0.20030856% 547,~~490~~108.8150 10.~~25743939~~22720559% ~~Limit~~0.113254% of0.000000% ~~Subordinate's~~Class ~~Exposure~~B-5 277,105.52 0.10017335% 273,606.34 0.11362443% 0.113664% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.113707% 0.000000% Please Refer to ~~Certain~~the ~~Types~~Prospectus Supplement for a Full Description of ~~Losses~~Loss Exposure

~~COLLATERAL~~CREDIT ~~STATEMENT~~ENHANCEMENT ~~Collateral~~Original ~~Description~~$ ~~Fixed~~Original ~~15 Year Weighted Average Gross Coupon 6.980776~~% ~~Weighted~~Current ~~Average~~$ ~~Pass-Through~~Current ~~Rate 6.250000~~% ~~Weighted~~Bankruptcy Average Maturity(Stepdown Calculation ) 175 Beginning Scheduled Collateral Loan Count 622 Number Of Loans Paid In Full 25 Ending Scheduled Collateral Loan Count 597 Beginning Scheduled Collateral Balance 265100,~~829,881~~000.81 Ending Scheduled Collateral Balance 253,649,665.54 Ending Actual Collateral Balance at 31-Oct-2001 257,555,598.46 Ending Scheduled Balance For Wells Fargo Serviced 203,481,426.04 Ending Scheduled Balance For Other Servicers 50,168,239.50 Monthly P &I Constant 2,311,458.12 Special Servicing Fee 0.00 ~~Prepayment Penalties~~ 0.0003614990% ~~Realized Loss Amount 0~~100,000.00 ~~Cumulative Realized Loss~~ 0.0004152843% ~~Class~~Fraud ~~A Optimal Amount 13~~5,~~522~~532,~~993~~519.3050 ~~Class AP Deferred Amount 0~~2.0000000000% ~~Ending Scheduled Balance for Premium Loans 239~~5,~~538~~532,~~867~~519.9650 ~~Ending scheduled Balance For discounted Loans 14,110,797~~2.5829756865% ~~Scheduled~~Special ~~Principal~~Hazard ~~837~~3,~~420.64 Unscheduled Principal 11~~189,~~342,795~~490.6381 ~~Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80~~1.15299758% ~~249~~3,~~842~~189,~~501~~490.8481 ~~Greater Than 80%, less than or equal to 85% 331,192~~1.~~89 Greater than 85~~32454555%, ~~less~~Limit ~~than~~of orSubordinate's ~~equal~~Exposure to ~~95%~~Certain ~~3,623,106.11~~Types ~~Greater~~of ~~than 95% 0.00~~Losses

Filing Compare · WELLS FARGO ASSET MORTGAGE BACKED SECURITIES 2001-20 TRUST