8-K 1 wfm0300f.txt DECEMBER 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): December 26, 2003 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2003-F Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-98129-20 Pending Pooling and Servicing Agreement) (Commission IRS EIN (State or other File Number) 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 December 26, 2003 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2003-F 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-F Trust, relating to the December 26, 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-F Trust By: Wells Fargo Bank Minnesota, N.A. as Master Servicer By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 1/2/04 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-F Trust, relating to the December 26, 2003 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 911/30/03 Distribution Date: 1012/2726/03 WFMBS Series: 2003-F 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-1 94979QAA0 SEQ 4.~~95857~~95048% ~~229~~220,~~788~~836,~~189~~245.9206 ~~949~~910,~~498~~994.0143 51,~~828~~470,~~725~~648.4776 A-R 94979QAB8 SEQ 4.~~95394~~95080% 0.00 0.00 0.00 B-1 94979QAC6 SUB 4.~~95857~~95048% 2,~~733~~726,~~000~~713.1843 11,~~292~~248.9125 3,~~112~~214.6530 B-2 94979QAD4 SUB 4.~~95857~~95048% 2,~~300~~295,~~897~~604.4264 9,~~507~~469.4484 2,~~620~~706.5310 B-3 94979QAE2 SUB 4.~~95857~~95048% ~~718~~717,~~843~~190.7620 2,~~970~~958.3056 ~~818~~845.7044 B-4 94979QAF9 SUB 4.~~95857~~95048% ~~718~~717,~~843~~190.7620 2,~~970~~958.3056 ~~818~~845.7044 B-5 94979QAG7 SUB 4.~~95857~~95048% 287,~~736~~074.6375 1,~~188~~184.9424 ~~327~~338.7141 B-6 94979QAH5 SUB 4.~~95857~~95048% ~~432~~431,~~084~~090.7784 1,~~785~~778.4034 ~~492~~508.1118 Totals ~~236~~228,~~979~~011,~~596~~109.4412 ~~979~~940,~~213~~592.3022 51,~~836~~479,~~915~~106.8763

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 ~~223~~219,~~959~~365,~~464~~596.4530 62,~~778~~381,~~223~~643.4819 0.00 A-R 0.00 0.00 0.00 0.00 B-1 0.00 2,~~729~~723,~~887~~499.5213 14,~~405~~462.5655 0.00 B-2 0.00 2,~~298~~292,~~276~~898.8954 12,~~127~~175.9794 0.00 B-3 0.00 ~~718~~716,~~025~~344.0676 3,~~789~~804.00 0.00 B-4 0.00 ~~718~~716,~~025~~344.0676 3,~~789~~804.00 0.00 B-5 0.00 ~~287~~286,~~408~~736.9234 1,~~516~~522.65 0.00 B-6 0.00 ~~431~~430,~~592~~582.66 2,~~277~~286.5152 0.00 Totals 0.00 ~~231~~226,~~142~~532,~~680~~002.5649 62,~~816~~419,~~129~~698.1785 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-1 281,672,000.00 ~~229~~220,~~788~~836,~~189~~245.9206 ~~261~~260,~~709~~325.1281 51,~~567~~210,~~016~~322.3595 0.00 0.00 A-R 100.00 0.00 0.00 0.00 0.00 0.00 B-1 2,745,000.00 2,~~733~~726,~~000~~713.1843 3,~~112~~214.6530 0.00 0.00 0.00 B-2 2,311,000.00 2,~~300~~295,~~897~~604.4264 2,~~620~~706.5310 0.00 0.00 0.00 B-3 722,000.00 ~~718~~717,~~843~~190.7620 ~~818~~845.7044 0.00 0.00 0.00 B-4 722,000.00 ~~718~~717,~~843~~190.7620 ~~818~~845.7044 0.00 0.00 0.00 B-5 289,000.00 287,~~736~~074.6375 ~~327~~338.7141 0.00 0.00 0.00 B-6 433,981.93 ~~432~~431,~~084~~090.7784 ~~492~~508.1118 0.00 0.00 0.00 Totals 288,895,081.93 ~~236~~228,~~979~~011,~~596~~109.4412 ~~269~~268,~~899~~783.5268 51,~~567~~210,~~016~~322.3595 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 51,~~828~~470,~~725~~648.4776 ~~223~~219,~~959~~365,~~464~~596.4530 0.~~79510730~~77879802 51,~~828~~470,~~725~~648.4776 A-R 0.00 0.00 0.00000000 0.00 B-1 3,~~112~~214.6530 2,~~729~~723,~~887~~499.5213 0.~~99449454~~99216726 3,~~112~~214.6530 B-2 2,~~620~~706.5310 2,~~298~~292,~~276~~898.8954 0.~~99449454~~99216726 2,~~620~~706.5310 B-3 ~~818~~845.7044 ~~718~~716,~~025~~344.0676 0.~~99449454~~99216726 ~~818~~845.7044 B-4 ~~818~~845.7044 ~~718~~716,~~025~~344.0676 0.~~99449454~~99216726 ~~818~~845.7044 B-5 ~~327~~338.7141 ~~287~~286,~~408~~736.9234 0.~~99449453~~99216727 ~~327~~338.7141 B-6 ~~492~~508.1118 ~~431~~430,~~592~~582.66 0.~~99449454~~99216725 ~~492~~508.1118 Totals 51,~~836~~479,~~915~~106.8763 ~~231~~226,~~142~~532,~~680~~002.5649 0.~~80009213~~78413243 51,~~836~~479,~~915~~106.8763

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 281,672,000.00 ~~815~~784.~~80061178~~01916080 0.~~92912721~~92421615 194.~~76418086~~29692319 0.00000000 A-R 100.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 2,745,000.00 ~~995~~993.~~62848087~~33822587 1.~~13393443~~17096539 0.00000000 0.00000000 B-2 2,311,000.00 ~~995~~993.~~62848118~~33822588 1.~~13393769~~17096495 0.00000000 0.00000000 B-3 722,000.00 ~~995~~993.~~62847645~~33822715 1.~~13393352~~17096953 0.00000000 0.00000000 B-4 722,000.00 ~~995~~993.~~62847645~~33822715 1.~~13393352~~17096953 0.00000000 0.00000000 B-5 289,000.00 ~~995~~993.~~62847751~~33823529 1.~~13394464~~17096886 0.00000000 0.00000000 B-6 433,981.93 ~~995~~993.~~62848158~~33822493 1.~~13394122~~17097041 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 205.~~69330807~~22113934 ~~795~~778.~~10730371~~79802146 0.~~79510730~~77879802 205.~~69330807~~22113934 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 1.~~13393443~~17096539 ~~994~~992.~~49454281~~16726047 0.~~99449454~~99216726 1.~~13393443~~17096539 B-2 0.00000000 1.~~13393769~~17096495 ~~994~~992.~~49454349~~16726093 0.~~99449454~~99216726 1.~~13393769~~17096495 B-3 0.00000000 1.~~13393352~~17096953 ~~994~~992.~~49454294~~16725762 0.~~99449454~~99216726 1.~~13393352~~17096953 B-4 0.00000000 1.~~13393352~~17096953 ~~994~~992.~~49454294~~16725762 0.~~99449454~~99216726 1.~~13393352~~17096953 B-5 0.00000000 1.~~13394464~~17096886 ~~994~~992.~~49453287~~16726644 0.~~99449453~~99216727 1.~~13394464~~17096886 B-6 0.00000000 1.~~13394122~~17097041 ~~994~~992.~~49454036~~16725452 0.~~99449454~~99216725 1.~~13394122~~17097041 (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-1 281,672,000.00 4.~~95857~~95048% ~~229~~220,~~788~~836,~~189~~245.9206 ~~949~~911,~~517~~037.5592 0.00 0.00 A-R 100.00 4.~~95394~~95080% 0.00 0.00 0.00 0.00 B-1 2,745,000.00 4.~~95857~~95048% 2,~~733~~726,~~000~~713.1843 11,~~293~~248.1578 0.00 0.00 B-2 2,311,000.00 4.~~95857~~95048% 2,~~300~~295,~~897~~604.4264 9,~~507~~470.6429 0.00 0.00 B-3 722,000.00 4.~~95857~~95048% ~~718~~717,~~843~~190.7620 2,~~970~~958.3670 0.00 0.00 B-4 722,000.00 4.~~95857~~95048% ~~718~~717,~~843~~190.7620 2,~~970~~958.3670 0.00 0.00 B-5 289,000.00 4.~~95857~~95048% 287,~~736~~074.6375 1,~~188~~184.9730 0.00 0.00 B-6 433,981.93 4.~~95857~~95048% ~~432~~431,~~084~~090.7784 1,~~785~~778.4442 0.00 0.00 Totals 288,895,081.93 ~~979~~940,~~233~~637.4711 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 1943.5349 0.00 ~~949~~910,~~498~~994.0143 0.00 ~~223~~219,~~959~~365,~~464~~596.4530 A-R 0.00 0.00 0.00 0.00 0.00 B-1 0.2354 0.00 11,~~292~~248.9125 0.00 2,~~729~~723,~~887~~499.5213 B-2 0.2045 0.00 9,~~507~~469.4484 0.00 2,~~298~~292,~~276~~898.8954 B-3 0.0614 0.00 2,~~970~~958.3056 0.00 ~~718~~716,~~025~~344.0676 B-4 0.0614 0.00 2,~~970~~958.3056 0.00 ~~718~~716,~~025~~344.0676 B-5 0.0206 0.00 1,~~188~~184.9424 0.00 ~~287~~286,~~408~~736.9234 B-6 0.0408 0.00 1,~~785~~778.4034 0.00 ~~431~~430,~~592~~582.66 Totals 2044.1490 0.00 ~~979~~940,~~213~~592.3022 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-1 281,672,000.00 4.~~95857~~95048% ~~815~~784.~~80061178~~01916080 3.~~37100440~~23439291 0.00000000 0.00000000 A-R 100.00 4.~~95394~~95080% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 2,745,000.00 4.~~95857~~95048% ~~995~~993.~~62848087~~33822587 4.~~11408015~~09791621 0.00000000 0.00000000 B-2 2,311,000.00 4.~~95857~~95048% ~~995~~993.~~62848118~~33822588 4.~~11408048~~09791865 0.00000000 0.00000000 B-3 722,000.00 4.~~95857~~95048% ~~995~~993.~~62847645~~33822715 4.~~11407202~~09792244 0.00000000 0.00000000 B-4 722,000.00 4.~~95857~~95048% ~~995~~993.~~62847645~~33822715 4.~~11407202~~09792244 0.00000000 0.00000000 B-5 289,000.00 4.~~95857~~95048% ~~995~~993.~~62847751~~33823529 4.~~11408304~~09792388 0.00000000 0.00000000 B-6 433,981.93 4.~~95857~~95048% ~~995~~993.~~62848158~~33822493 4.~~11408834~~09791256 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.~~00006934~~00015440 0.00000000 3.~~37093502~~23423851 0.00000000 ~~795~~778.~~10730371~~79802146 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.~~00008379~~00019672 0.00000000 4.~~11399271~~09772313 0.00000000 ~~994~~992.~~49454281~~16726047 B-2 0.~~00008654~~00019472 0.00000000 4.~~11399394~~09772393 0.00000000 ~~994~~992.~~49454349~~16726093 B-3 0.~~00008310~~00019391 0.00000000 4.~~11398892~~09772853 0.00000000 ~~994~~992.~~49454294~~16725762 B-4 0.~~00008310~~00019391 0.00000000 4.~~11398892~~09772853 0.00000000 ~~994~~992.~~49454294~~16725762 B-5 0.~~00006920~~00020761 0.00000000 4.~~11397924~~09771626 0.00000000 ~~994~~992.~~49453287~~16726644 B-6 0.~~00009217~~00018434 0.00000000 4.~~11399617~~09772822 0.00000000 ~~994~~992.~~49454036~~16725452 (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 ~~25,492~~0.0300 Deposits Payments of Interest and Principal 62,~~925~~619,~~372~~575.9985 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 0.00 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 62,~~925~~619,~~372~~575.9985 Withdrawals Reimbursement for Servicer Advances 088,289.0079 Payment of Service Fee 71,~~730~~941.8292 Payment of Interest and Principal 62,~~816~~419,~~129~~698.1982 Total Withdrawals (Pool Distribution Amount) 62,~~887~~579,~~860~~930.0153 Ending Balance 6339,~~005~~645.0132

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 41,~~318~~252.7398 Servicing Fee Support 41,~~298~~208.5908 Non-Supported Prepayment/Curtailment Interest Shortfall 2044.1490

SERVICING FEES Gross Servicing Fee 7471,~~054~~250.6200 Master Servicing Fee 1,~~974~~900.7900 Supported Prepayment/Curtailment Interest Shortfall 41,~~298~~208.5908 Net Servicing Fee 71,~~730~~941.8292

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 02 0 0 0 02 0772,349.0028 0.00 0.00 0.00 0772,349.0028 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 02 0 0 0 02 0772,349.0028 0.00 0.00 0.00 0772,349.0028 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~~459770% 0.000000% 0.000000% 0.000000% 0.~~000000~~459770% 0.~~000000~~339787% 0.000000% 0.000000% 0.000000% 0.~~000000~~339787% 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.~~000000~~459770% 0.000000% 0.000000% 0.000000% 0.~~000000~~459770% 0.~~000000~~339787% 0.000000% 0.000000% 0.000000% 0.~~000000~~339787%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 1831,~~460~~986.4395

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 7,222,981.93 2.50020938% 7,~~183~~166,~~216~~406.1119 3.~~10769785~~16352926% 96.~~892302~~836471% 100.000000% Class B-1 4,477,981.93 1.55003744% 4,~~453~~442,~~328~~907.5906 1.~~92665785~~96127126% 1.~~181040~~202258% 0.000000% Class B-2 2,166,981.93 0.75009305% 2,~~155~~150,~~051~~008.7052 0.~~93234694~~94909704% 01.~~994311~~012174% 0.000000% Class B-3 1,444,981.93 0.50017533% 1,~~437~~433,~~026~~663.6476 0.~~62170545~~63287471% 0.~~310641~~316222% 0.000000% Class B-4 722,981.93 0.25025761% ~~719~~717,~~001~~319.5800 0.~~31106396~~31665239% 0.~~310641~~316222% 0.000000% Class B-5 433,981.93 0.15022129% ~~431~~430,~~592~~582.66 0.~~18672132~~19007586% 0.~~124343~~126577% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~186721~~190076% 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.~~343570~~335485% Weighted Average Net Coupon 4.~~958570~~950485% Weighted Average Pass-Through Rate 4.~~958570~~950485% Weighted Average Maturity(Stepdown Calculation ) ~~354~~352 Beginning Scheduled Collateral Loan Count ~~454~~437 Number Of Loans Paid In Full 112 Ending Scheduled Collateral Loan Count ~~443~~435 Beginning Scheduled Collateral Balance ~~236~~228,~~979~~011,~~596~~109.4410 Ending Scheduled Collateral Balance ~~231~~226,~~142~~532,~~680~~002.5748 Ending Actual Collateral Balance at 30-~~Sep~~Nov-2003 ~~231~~227,~~043~~303,~~575~~890.5088 Monthly P &I Constant 1,~~332~~283,~~940~~904.7313 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 62,~~778~~381,~~243~~686.0268 Ending Scheduled Balance for Premium Loans ~~231~~226,~~142~~532,~~680~~002.5748 Scheduled Principal ~~269~~268,~~899~~783.5267 Unscheduled Principal 51,~~567~~210,~~016~~322.3595 Unpaid Principal Balance Of Outstanding Mortgage Loans With Or Less Than Or Equal To 80% ~~231~~226,~~129~~523,~~627~~447.7500 Greater Than 80%, less than or equal to 85% 0.00 Greater than 85%, less than or equal to 95% 0.00 Greater than 95% 0.00

Filing Compare · WELLS FARGO MORTGAGE PASS THRU CER SER 2003-F