8-K 1 wfm0400b_sep.txt SEPTEMBER 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): September 27, 2004 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2004-B Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-110283-12 54-2144720 Pooling and Servicing Agreement) (Commission IRS EIN (State or other File Number) jurisdiction 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 27, 2004 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2004-B 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 2004-B Trust, relating to the September 27, 2004 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 2004-B Trust (Registrant) By: Wells Fargo Bank, N.A. as Master Servicer By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 10/1/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2004-B Trust, relating to the September 27, 2004 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 78/31/2004 Distribution Date: 89/2527/2004 WFMBS Series: 2004-B Contact: Customer Service - CTSLink Wells Fargo Bank, 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-1 94981KAA9 SEN 4.~~97680~~97597% ~~164~~162,~~690~~596,~~335~~379.1428 ~~683~~674,~~027~~309.2827 21,~~093~~631,~~955~~125.8606 A-R 94981KAB7 SEN 4.~~97597~~97512% 0.00 0.00 0.00 B-1 94981KAC5 SUB 4.~~97680~~97597% 2,~~482~~479,~~197~~255.5717 10,~~294~~281.5281 2,~~942~~972.4058 B-2 94981KAD3 SUB 4.~~97680~~97597% 1,~~448~~446,~~196~~480.9021 65,~~006~~998.1775 1,~~716~~734.7030 B-3 94981KAE1 SUB 4.~~97680~~97597% 620,~~797~~061.7182 2,~~574~~571.6648 ~~735~~743.9044 B-4 94981KAF8 SUB 4.~~97680~~97597% 620,~~797~~061.7182 2,~~574~~571.6648 ~~735~~743.9044 B-5 94981KAG6 SUB 4.~~97680~~97597% ~~413~~412,~~202~~713.9615 1,~~713~~711.6958 ~~489~~494.8183 B-6 94981KAH4 SUB 4.~~97680~~97597% ~~311~~310,~~293~~924.08 1,~~291~~289.0444 ~~369~~372.0179 Totals ~~170~~168,~~586~~485,~~821~~875.0753 ~~707~~698,~~482~~733.0281 21,~~100~~638,~~945~~186.5844

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 ~~162~~160,~~596~~965,~~379~~254.2822 2,~~776~~305,~~983~~434.1433 0.00 A-R 0.00 0.00 0.00 0.00 B-1 0.00 2,~~479~~476,~~255~~282.1759 13,~~236~~254.9239 0.00 B-2 0.00 1,~~446~~444,~~480~~745.2191 7,~~722~~733.8705 0.00 B-3 0.00 ~~620~~619,~~061~~318.8238 3,~~310~~314.5692 0.00 B-4 0.00 ~~620~~619,~~061~~318.8238 3,~~310~~314.5692 0.00 B-5 0.00 412,~~713~~218.1531 2,~~203~~206.5041 0.00 B-6 0.00 310,~~924~~551.0828 1,~~660~~662.0523 0.00 Totals 0.00 ~~168~~166,~~485~~847,~~875~~689.5307 2,~~808~~336,~~427~~920.6025 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-1 202,354,000.00 ~~164~~162,~~690~~596,~~335~~379.1428 ~~195~~194,~~224~~949.3867 1,~~898~~436,~~731~~175.4839 0.00 0.00 A-R 100.00 0.00 0.00 0.00 0.00 0.00 B-1 2,499,000.00 2,~~482~~479,~~197~~255.5717 2,~~942~~972.4058 0.00 0.00 0.00 B-2 1,458,000.00 1,~~448~~446,~~196~~480.9021 1,~~716~~734.7030 0.00 0.00 0.00 B-3 625,000.00 620,~~797~~061.7182 ~~735~~743.9044 0.00 0.00 0.00 B-4 625,000.00 620,~~797~~061.7182 ~~735~~743.9044 0.00 0.00 0.00 B-5 416,000.00 ~~413~~412,~~202~~713.9615 ~~489~~494.8183 0.00 0.00 0.00 B-6 313,400.28 ~~311~~310,~~293~~924.08 ~~369~~372.0179 0.00 0.00 0.00 Totals 208,290,500.28 ~~170~~168,~~586~~485,~~821~~875.0753 202,~~214~~011.1005 1,~~898~~436,~~731~~175.4839 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-1 21,~~093~~631,~~955~~125.8606 ~~162~~160,~~596~~965,~~379~~254.2822 0.~~80352441~~79546366 21,~~093~~631,~~955~~125.8606 A-R 0.00 0.00 0.00000000 0.00 B-1 2,~~942~~972.4058 2,~~479~~476,~~255~~282.1759 0.~~99209891~~99090940 2,~~942~~972.4058 B-2 1,~~716~~734.7030 1,~~446~~444,~~480~~745.2191 0.~~99209891~~99090940 1,~~716~~734.7030 B-3 ~~735~~743.9044 ~~620~~619,~~061~~318.8238 0.~~99209891~~99090941 ~~735~~743.9044 B-4 ~~735~~743.9044 ~~620~~619,~~061~~318.8238 0.~~99209891~~99090941 ~~735~~743.9044 B-5 ~~489~~494.8183 412,~~713~~218.1531 0.~~99209892~~99090940 ~~489~~494.8183 B-6 ~~369~~372.0179 310,~~924~~551.0828 0.~~99209892~~99090939 ~~369~~372.0179 Totals 21,~~100~~638,~~945~~186.5844 ~~168~~166,~~485~~847,~~875~~689.5307 0.~~80889851~~80103360 21,~~100~~638,~~945~~186.5844

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 202,354,000.00 ~~813~~803.~~87239758~~52441405 0.~~96476660~~96340903 97.~~38321694~~09734124 0.00000000 A-R 100.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 2,499,000.00 ~~993~~992.~~27633854~~09890756 1.~~17743097~~18950780 0.00000000 0.00000000 B-2 1,458,000.00 ~~993~~992.~~27633745~~09890947 1.~~17743484~~18950617 0.00000000 0.00000000 B-3 625,000.00 ~~993~~992.~~27633600~~09891200 1.~~17744000~~18950400 0.00000000 0.00000000 B-4 625,000.00 ~~993~~992.~~27633600~~09891200 1.~~17744000~~18950400 0.00000000 0.00000000 B-5 416,000.00 ~~993~~992.~~27634615~~09891827 1.~~17742788~~18949519 0.00000000 0.00000000 B-6 313,400.28 ~~993~~992.~~27633019~~09892218 1.~~17743992~~18950117 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-1 0.00000000 108.~~34798353~~06075027 ~~803~~795.~~52441405~~46366378 0.~~80352441~~79546366 108.~~34798353~~06075027 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 1.~~17743097~~18950780 ~~992~~990.~~09890756~~90939976 0.~~99209891~~99090940 1.~~17743097~~18950780 B-2 0.00000000 1.~~17743484~~18950617 ~~992~~990.~~09890947~~90940329 0.~~99209891~~99090940 1.~~17743484~~18950617 B-3 0.00000000 1.~~17744000~~18950400 ~~992~~990.~~09891200~~90940800 0.~~99209891~~99090941 1.~~17744000~~18950400 B-4 0.00000000 1.~~17744000~~18950400 ~~992~~990.~~09891200~~90940800 0.~~99209891~~99090941 1.~~17744000~~18950400 B-5 0.00000000 1.~~17742788~~18949519 ~~992~~990.~~09891827~~90939904 0.~~99209892~~99090940 1.~~17742788~~18949519 B-6 0.00000000 1.~~17743992~~18950117 ~~992~~990.~~09892218~~90938910 0.~~99209892~~99090939 1.~~17743992~~18950117 (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-1 202,354,000.00 4.~~97680~~97597% ~~164~~162,~~690~~596,~~335~~379.1428 ~~683~~674,~~025~~228.1232 0.00 0.00 A-R 100.00 4.~~97597~~97512% 0.00 0.00 0.00 0.00 B-1 2,499,000.00 4.~~97680~~97597% 2,~~482~~479,~~197~~255.5717 10,~~294~~280.4957 0.00 0.00 B-2 1,458,000.00 4.~~97680~~97597% 1,~~448~~446,~~196~~480.9021 65,~~006~~998.1503 0.00 0.00 B-3 625,000.00 4.~~97680~~97597% 620,~~797~~061.7182 2,~~574~~571.6517 0.00 0.00 B-4 625,000.00 4.~~97680~~97597% 620,~~797~~061.7182 2,~~574~~571.6517 0.00 0.00 B-5 416,000.00 4.~~97680~~97597% ~~413~~412,~~202~~713.9615 1,~~713~~711.6937 0.00 0.00 B-6 313,400.28 4.~~97680~~97597% ~~311~~310,~~293~~924.08 1,~~291~~289.0429 0.00 0.00 Totals 208,290,500.28 ~~707~~698,~~479~~649.7992 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-1 (280.1794) 0.00 ~~683~~674,~~027~~309.2827 0.00 ~~162~~160,~~596~~965,~~379~~254.2822 A-R 0.00 0.00 0.00 0.00 0.00 B-1 (01.0323) 0.00 10,~~294~~281.5281 0.00 2,~~479~~476,~~255~~282.1759 B-2 (0.0272) 0.00 65,~~006~~998.1775 0.00 1,~~446~~444,~~480~~745.2191 B-3 (0.0131) 0.00 2,~~574~~571.6648 0.00 ~~620~~619,~~061~~318.8238 B-4 (0.0131) 0.00 2,~~574~~571.6648 0.00 ~~620~~619,~~061~~318.8238 B-5 (0.0121) 0.00 1,~~713~~711.6958 0.00 412,~~713~~218.1531 B-6 (0.0015) 0.00 1,~~291~~289.0444 0.00 310,~~924~~551.0828 Totals (283.2587) 0.00 ~~707~~698,~~482~~733.0281 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-1 202,354,000.00 4.~~97680~~97597% ~~813~~803.~~87239758~~52441405 3.~~37539718~~33192484 0.00000000 0.00000000 A-R 100.00 4.~~97597~~97512% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 2,499,000.00 4.~~97680~~97597% ~~993~~992.~~27633854~~09890756 4.~~11944378~~11387355 0.00000000 0.00000000 B-2 1,458,000.00 4.~~97680~~97597% ~~993~~992.~~27633745~~09890947 4.~~11944444~~11387517 0.00000000 0.00000000 B-3 625,000.00 4.~~97680~~97597% ~~993~~992.~~27633600~~09891200 4.~~11944000~~11387200 0.00000000 0.00000000 B-4 625,000.00 4.~~97680~~97597% ~~993~~992.~~27633600~~09891200 4.~~11944000~~11387200 0.00000000 0.00000000 B-5 416,000.00 4.~~97680~~97597% ~~993~~992.~~27634615~~09891827 4.~~11944712~~11387019 0.00000000 0.00000000 B-6 313,400.28 4.~~97680~~97597% ~~993~~992.~~27633019~~09892218 4.~~11946026~~11387635 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-1 (0.~~00001072~~00039999) 0.00000000 3.~~37540785~~33232489 0.00000000 ~~803~~795.~~52441405~~46366378 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 (0.~~00001200~~00049220) 0.00000000 4.~~11945578~~11436975 0.00000000 ~~992~~990.~~09890756~~90939976 B-2 (0.~~00001372~~00049383) 0.00000000 4.~~11945816~~11436900 0.00000000 ~~992~~990.~~09890947~~90940329 B-3 (0.~~00001600~~00049600) 0.00000000 4.~~11945600~~11436800 0.00000000 ~~992~~990.~~09891200~~90940800 B-4 (0.~~00001600~~00049600) 0.00000000 4.~~11945600~~11436800 0.00000000 ~~992~~990.~~09891200~~90940800 B-5 (0.~~00002404~~00050481) 0.00000000 4.~~11944712~~11437500 0.00000000 ~~992~~990.~~09891827~~90939904 B-6 (0.~~00000000~~00047862) 0.00000000 4.~~11946026~~11435497 0.00000000 ~~992~~990.~~09892218~~90938910 (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 0.00 Deposits Payments of Interest and Principal 2,~~890~~397,~~185~~208.5271 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) ~~4,868~~0.5700 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 2,~~895~~397,~~054~~208.0971 Withdrawals Reimbursement for Servicer Advances 324,~~105~~868.5057 Payment of Service Fee 5453,~~521~~718.0155 Payment of Interest and Principal 2,~~808~~336,~~427~~920.6025 Total Withdrawals (Pool Distribution Amount) 2,~~895~~395,~~054~~507.1137 Ending Balance 01,701.0034

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall ~~206~~253.3140 Servicing Fee Support ~~208~~337.5527 Non-Supported Prepayment/Curtailment Interest Shortfall (283.2487)

SERVICING FEES Gross Servicing Fee 5352,~~308~~651.0178 Master Servicing Fee 1,~~421~~404.5505 Supported Prepayment/Curtailment Interest Shortfall ~~208~~337.5527 Net Servicing Fee 5453,~~521~~718.0155

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 4034,~~947~~699.6490

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 5,936,400.28 2.85005810% 5,~~889~~882,~~496~~434.2585 3.~~49554301~~52563160% 96.~~504457~~474368% 100.000000% Class B-1 3,437,400.28 1.65029143% 3,~~410~~406,~~241~~152.0826 2.~~02405161~~04147404% 1.~~471491~~484158% 0.000000% Class B-2 1,979,400.28 0.95030752% 1,~~963~~961,~~760~~406.8735 1.~~16553442~~17556699% 0.~~858517~~865907% 0.000000% Class B-3 1,354,400.28 0.65024582% 1,~~343~~342,~~699~~087.0597 0.~~79751436~~80437912% 0.~~368020~~371188% 0.000000% Class B-4 729,400.28 0.35018413% ~~723~~722,~~637~~769.2359 0.~~42949430~~43319125% 0.~~368020~~371188% 0.000000% Class B-5 313,400.28 0.15046307% 310,~~924~~551.0828 0.~~18454015~~18612861% 0.~~244954~~247063% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~184540~~186129% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description 10/1 CMT ARM Weighted Average Gross Coupon 5.~~361846~~361569% Weighted Average Net Coupon 4.~~976846~~976569% Weighted Average Pass-Through Rate 4.~~976846~~976569% Weighted Average Maturity(Stepdown Calculation ) ~~351~~350 Beginning Scheduled Collateral Loan Count ~~349~~345 Number Of Loans Paid In Full 43 Ending Scheduled Collateral Loan Count ~~345~~342 Beginning Scheduled Collateral Balance ~~170~~168,~~586~~485,~~821~~875.0952 Ending Scheduled Collateral Balance ~~168~~166,~~485~~847,~~875~~689.5208 Ending Actual Collateral Balance at 31-~~Jul~~Aug-2004 ~~165~~163,~~247~~571,~~074~~502.0714 Monthly P &I Constant ~~966~~956,~~464~~406.0446 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 2,~~776~~305,~~980~~353.9838 Ending scheduled Balance For discounted Loans ~~168~~166,~~485~~847,~~875~~689.5208 Scheduled Principal 202,~~214~~011.0905 Unscheduled Principal 1,~~898~~436,~~731~~175.4839 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% ~~163~~161,~~035~~403,~~249~~435.7850 Greater Than 80%, less than or equal to 85% 1,~~826~~824,~~826~~552.5539 Greater than 85%, less than or equal to 95% 3,~~624~~619,~~041~~255.5983 Greater than 95% 0.00

Filing Compare · WELLS FARGO ASSET SECURITIES CORP MORTGAGE BACKED 2004-B