8-K 1 wfm02012.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, 2002 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates, Series 2002-12 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-74308-16 Pooling and Servicing Agreement) (Commission 16-1616446 (State or other File Number) 16-1616447 jurisdiction IRS EIN 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, 2002 a distribution was made to holders of WELLS FARGO ASSET SECURITIES CORPORATION, Mortgage Pass-Through Certificates, Series 2002-12 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 2002-12 Trust, relating to the December 26, 2002 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 2002-12 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: 1/3/03 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2002-12 Trust, relating to the December 26, 2002 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 1011/3130/02 Distribution Date: 1112/2526/02 WFMBS Series: 2002-12 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 94978WAK6 PO 0.00000% ~~810~~761,~~548~~777.9534 0.00 4825,~~771~~698.6168 A-1 94978WAA8 SEQ 5.25000% 93,~~700~~115,~~989~~713.2935 ~~409~~407,~~935~~067.5737 ~~585~~630,~~275~~052.9471 A-2 94978WAB6 SEQ 21.~~23000~~78000% 58,~~563~~197,~~117~~319.4599 ~~108~~86,~~828~~259.1351 ~~365~~393,~~797~~782.4693 A-3 94978WAC4 SEQ 6.~~27000~~72000% 0.00 ~~305~~325,~~987~~653.6189 0.00 A-4 94978WAD2 SEQ 6.50000% 5528,~~562~~155,~~340~~696.1352 ~~300~~152,~~958~~392.0852 2722,~~406~~996,~~643~~755.6150 A-5 94978WAE0 SEQ 6.50000% 0.00 0.00 0.00 A-6 94978WAF7 SEQ 6.50000% 27,~~075~~222,~~727~~385.2318 ~~146~~147,~~657~~340.9598 (~~146~~147,~~657~~340.9598) A-7 94978WAG5 SEQ 6.50000% 0.00 0.00 0.00 A-8 94978WAH3 SEQ 6.50000% 15,000,000.00 81,~~248~~187.7640 0.00 A-9 94978WAJ9 SEQ 6.50000% 35,300,000.00 191,~~205~~061.4101 0.00 A-R 94978WAL4 RES 6.50000% 0.00 0.00 0.00 A-LR 94978WAM2 RES 6.50000% 0.00 0.00 0.00 B-1 94978WAN0 SUB 6.50000% 4,~~887~~883,~~230~~213.02 26,~~472~~430.0936 4,~~017~~117.0135 B-2 94978WAP5 SUB 6.50000% 1,~~920~~918,~~410~~831.3387 10,~~402~~385.0666 1,~~578~~617.4689 B-3 94978WAQ3 SUB 6.50000% 1,~~396~~395,~~209~~061.0747 7,~~562~~550.6876 1,~~147~~176.6027 B-4 94978WAR1 SUB 6.50000% ~~524~~523,~~201~~770.2640 2,~~839~~834.3890 ~~430~~441.8662 B-5 94978WAS9 SUB 6.50000% 697,~~606~~032.2485 3,~~778~~772.6469 ~~573~~587.3971 B-6 94978WAT7 SUB 6.50000% 524,~~472~~040.0697 2,~~840~~836.8537 ~~431~~441.0885 Totals ~~295~~267,~~962~~694,~~852~~842.0396 1,~~598~~444,~~717~~773.2142 2823,~~268~~907,~~009~~331.0753

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 ~~761~~736,~~777~~078.3466 4825,~~771~~698.6168 0.00 A-1 0.00 9392,~~115~~485,~~713~~660.3564 ~~995~~1,~~211~~037,120.5108 0.00 A-2 0.00 5857,~~197~~803,~~319~~537.9906 ~~474~~480,~~625~~042.5944 0.00 A-3 0.00 0.00 ~~305~~325,~~987~~653.6189 0.00 A-4 0.00 285,~~155~~158,~~696~~941.5202 2723,~~707~~149,~~601~~148.6902 0.00 A-5 0.00 0.00 0.00 0.00 A-6 0.00 27,~~222~~369,~~385~~726.1816 0.00 0.00 A-7 0.00 0.00 0.00 0.00 A-8 0.00 15,000,000.00 81,~~248~~187.7640 0.00 A-9 0.00 35,300,000.00 191,~~205~~061.4101 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 4,~~883~~879,~~213~~095.0267 30,~~489~~547.1071 0.00 B-2 0.00 1,~~918~~917,~~831~~213.8798 1112,~~980~~003.5255 0.00 B-3 0.00 1,~~395~~393,~~061~~885.4720 8,~~710~~727.2803 0.00 B-4 0.00 523,~~770~~328.4078 3,~~270~~276.2452 0.00 B-5 0.00 ~~697~~696,~~032~~445.8514 4,~~352~~360.0340 0.00 B-6 0.00 ~~524~~523,~~040~~599.9712 3,~~271~~278.9322 0.00 Totals 0.00 ~~267~~243,~~694~~787,~~842~~511.9643 2925,~~866~~352,~~726~~104.2895 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 821,203.02 ~~810~~761,~~548~~777.9534 ~~703~~685.9039 4825,~~067~~013.7129 0.00 0.00 A-1 95,589,539.00 93,~~700~~115,~~989~~713.2935 45,~~863~~718.3367 ~~580~~624,~~412~~334.6004 0.00 0.00 A-2 59,743,461.00 58,~~563~~197,~~117~~319.4599 3,~~039~~574.5817 ~~362~~390,~~757~~208.8876 0.00 0.00 A-3 0.00 0.00 0.00 0.00 0.00 0.00 A-4 77,000,000.00 5528,~~562~~155,~~340~~696.1352 ~~227~~208,~~734~~730.7106 2722,~~178~~788,~~908~~025.9044 0.00 0.00 A-5 25,174,000.00 0.00 0.00 0.00 0.00 0.00 A-6 26,497,000.00 27,~~075~~222,~~727~~385.2318 0.00 0.00 (~~146~~147,~~657~~340.9598) 0.00 A-7 5,200,000.00 0.00 0.00 0.00 0.00 0.00 A-8 15,000,000.00 15,000,000.00 0.00 0.00 0.00 0.00 A-9 35,300,000.00 35,300,000.00 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 4,904,000.00 4,~~887~~883,~~230~~213.02 4,~~017~~117.0135 0.00 0.00 0.00 B-2 1,927,000.00 1,~~920~~918,~~410~~831.3387 1,~~578~~617.4689 0.00 0.00 0.00 B-3 1,401,000.00 1,~~396~~395,~~209~~061.0747 1,~~147~~176.6027 0.00 0.00 0.00 B-4 526,000.00 ~~524~~523,~~201~~770.2640 ~~430~~441.8662 0.00 0.00 0.00 B-5 700,000.00 697,~~606~~032.2485 ~~573~~587.3971 0.00 0.00 0.00 B-6 526,271.72 524,~~472~~040.0697 ~~431~~441.0885 0.00 0.00 0.00 Totals 350,309,574.74 ~~295~~267,~~962~~694,~~852~~842.0396 ~~244~~227,~~519~~090.9298 2823,~~170~~827,~~147~~581.0953 (~~146~~147,~~657~~340.9598) 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 4825,~~771~~698.6168 ~~761~~736,~~777~~078.3466 0.~~92763582~~89634188 4825,~~771~~698.6168 A-1 ~~585~~630,~~275~~052.9471 9392,~~115~~485,~~713~~660.3564 0.~~97412033~~96752910 ~~585~~630,~~275~~052.9471 A-2 ~~365~~393,~~797~~782.4693 5857,~~197~~803,~~319~~537.9906 0.~~97412033~~96752910 ~~365~~393,~~797~~782.4693 A-3 0.00 0.00 0.00000000 0.00 A-4 2722,~~406~~996,~~643~~755.6150 285,~~155~~158,~~696~~941.5202 0.~~36565840~~06699923 2722,~~406~~996,~~643~~755.6150 A-5 0.00 0.00 0.00000000 0.00 A-6 (~~146~~147,~~657~~340.9598) 27,~~222~~369,~~385~~726.1816 1.~~02737612~~03293679 (~~146~~147,~~657~~340.9598) A-7 0.00 0.00 0.00000000 0.00 A-8 0.00 15,000,000.00 1.00000000 0.00 A-9 0.00 35,300,000.00 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 4,~~017~~117.0135 4,~~883~~879,~~213~~095.0267 0.~~99576122~~99492163 4,~~017~~117.0135 B-2 1,~~578~~617.4689 1,~~918~~917,~~831~~213.8798 0.~~99576122~~99492163 1,~~578~~617.4689 B-3 1,~~147~~176.6027 1,~~395~~393,~~061~~885.4720 0.~~99576122~~99492163 1,~~147~~176.6027 B-4 ~~430~~441.8662 523,~~770~~328.4078 0.~~99576122~~99492163 ~~430~~441.8662 B-5 ~~573~~587.3971 ~~697~~696,~~032~~445.8514 0.~~99576121~~99492163 ~~573~~587.3971 B-6 ~~431~~441.0885 ~~524~~523,~~040~~599.9712 0.~~99576122~~99492163 ~~431~~441.0885 Totals 2823,~~268~~907,~~009~~331.0753 ~~267~~243,~~694~~787,~~842~~511.9643 0.~~76416650~~69592021 2823,~~268~~907,~~009~~331.0753

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 821,203.02 ~~987~~927.~~02626544~~63582384 0.~~85715710~~83461700 5830.~~53328450~~45932539 0.00000000 A-1 95,589,539.00 ~~980~~974.~~24313403~~12033078 0.~~05087722~~05982527 6.~~07192592~~53140549 0.00000000 A-2 59,743,461.00 ~~980~~974.~~24313406~~12033076 0.~~05087720~~05982529 6.~~07192610~~53140534 0.00000000 A-3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-4 77,000,000.00 ~~721~~365.~~58883286~~65839636 2.~~95759364~~71078000 ~~352~~295.~~97284286~~94838234 0.00000000 A-5 25,174,000.00 0.00000000 0.00000000 0.00000000 0.00000000 A-6 26,497,000.00 ~~1021~~1027.~~84123599~~37612484 0.00000000 0.00000000 (5.~~53488886~~56066649) A-7 5,200,000.00 0.00000000 0.00000000 0.00000000 0.00000000 A-8 15,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-9 35,300,000.00 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 4,904,000.00 ~~996~~995.~~58034666~~76121941 0.~~81912928~~83959013 0.00000000 0.00000000 B-2 1,927,000.00 ~~996~~995.~~58034769~~76121951 0.~~81912818~~83959004 0.00000000 0.00000000 B-3 1,401,000.00 ~~996~~995.~~58034975~~76122056 0.~~81912919~~83959315 0.00000000 0.00000000 B-4 526,000.00 ~~996~~995.~~58034221~~76121673 0.~~81912548~~83958175 0.00000000 0.00000000 B-5 700,000.00 ~~996~~995.~~58034286~~76121429 0.~~81912857~~83958571 0.00000000 0.00000000 B-6 526,271.72 ~~996~~995.~~58035967~~76122008 0.~~81912059~~83958530 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 5931.~~39044160~~29394239 ~~927~~896.~~63582384~~34188145 0.~~92763582~~89634188 5931.~~39044160~~29394239 A-1 0.00000000 6.~~12280325~~59123076 ~~974~~967.~~12033078~~52910002 0.~~97412033~~96752910 6.~~12280325~~59123076 A-2 0.00000000 6.~~12280330~~59123063 ~~974~~967.~~12033076~~52910013 0.~~97412033~~96752910 6.~~12280330~~59123063 A-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-4 0.00000000 ~~355~~298.~~93043649~~65916234 ~~365~~66.~~65839636~~99923403 0.~~36565840~~06699923 ~~355~~298.~~93043649~~65916234 A-5 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-6 0.00000000 (5.~~53488886~~56066649) 1,~~027~~032.~~37612484~~93679133 1.~~02737612~~03293679 (5.~~53488886~~56066649) A-7 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-8 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-9 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.~~81912928~~83959013 ~~995~~994.~~76121941~~92162928 0.~~99576122~~99492163 0.~~81912928~~83959013 B-2 0.00000000 0.~~81912818~~83959004 ~~995~~994.~~76121951~~92162948 0.~~99576122~~99492163 0.~~81912818~~83959004 B-3 0.00000000 0.~~81912919~~83959315 ~~995~~994.~~76122056~~92162741 0.~~99576122~~99492163 0.~~81912919~~83959315 B-4 0.00000000 0.~~81912548~~83958175 ~~995~~994.~~76121673~~92163498 0.~~99576122~~99492163 0.~~81912548~~83958175 B-5 0.00000000 0.~~81912857~~83958571 ~~995~~994.~~76121429~~92162857 0.~~99576121~~99492163 0.~~81912857~~83958571 B-6 0.00000000 0.~~81912059~~83958530 ~~995~~994.~~76122008~~92163478 0.~~99576122~~99492163 0.~~81912059~~83958530 (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 821,203.02 0.00000% ~~810~~761,~~548~~777.9534 0.00 0.00 0.00 A-1 95,589,539.00 5.25000% 93,~~700~~115,~~989~~713.2935 ~~409~~407,~~941~~381.8325 0.00 0.00 A-2 59,743,461.00 21.~~23000~~78000% 58,~~563~~197,~~117~~319.4599 ~~108~~86,~~829~~326.7902 0.00 0.00 A-3 0.00 6.~~27000~~72000% 58,~~563~~197,~~117~~319.4599 ~~305~~325,~~992~~904.2999 0.00 0.00 A-4 77,000,000.00 6.50000% 5528,~~562~~155,~~340~~696.1352 ~~300~~152,~~962~~510.6802 0.00 0.00 A-5 25,174,000.00 6.50000% 0.00 0.00 0.00 0.00 A-6 26,497,000.00 6.50000% 27,~~075~~222,~~727~~385.2318 ~~146~~147,~~660~~454.1959 0.00 0.00 A-7 5,200,000.00 6.50000% 0.00 0.00 0.00 0.00 A-8 15,000,000.00 6.50000% 15,000,000.00 81,250.00 0.00 0.00 A-9 35,300,000.00 6.50000% 35,300,000.00 191,208.33 0.00 0.00 A-R 50.00 6.50000% 0.00 0.00 0.00 0.00 A-LR 50.00 6.50000% 0.00 0.00 0.00 0.00 B-1 4,904,000.00 6.50000% 4,~~887~~883,~~230~~213.02 26,~~472~~450.5074 0.00 0.00 B-2 1,927,000.00 6.50000% 1,~~920~~918,~~410~~831.3387 10,~~402~~393.2267 0.00 0.00 B-3 1,401,000.00 6.50000% 1,~~396~~395,~~209~~061.0747 7,~~562~~556.8058 0.00 0.00 B-4 526,000.00 6.50000% ~~524~~523,~~201~~770.2640 2,~~839~~837.4209 0.00 0.00 B-5 700,000.00 6.50000% 697,~~606~~032.2485 3,~~778~~775.7059 0.00 0.00 B-6 526,271.72 6.50000% 524,~~472~~040.0697 2,~~840~~838.8956 0.00 0.00 Totals 350,309,574.74 1,~~598~~445,~~741~~887.6443 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 ~~761~~736,~~777~~078.3466 A-1 6313.2687 0.00 ~~409~~407,~~935~~067.5737 0.00 9392,~~115~~485,~~713~~660.3564 A-2 1.66.51 0.00 ~~108~~86,~~828~~259.1351 0.00 5857,~~197~~803,~~319~~537.9906 A-3 4251.6710 0.00 ~~305~~325,~~987~~653.6189 0.00 5857,~~197~~803,~~319~~537.9906 A-4 4117.6050 0.00 ~~300~~152,~~958~~392.0852 0.00 285,~~155~~158,~~696~~941.5202 A-5 0.00 0.00 0.00 0.00 0.00 A-6 2113.2461 0.00 ~~146~~147,~~657~~340.9598 0.00 27,~~222~~369,~~385~~726.1816 A-7 0.00 0.00 0.00 0.00 0.00 A-8 162.2460 0.00 81,~~248~~187.7640 0.00 15,000,000.00 A-9 2147.9232 0.00 191,~~205~~061.4101 0.00 35,300,000.00 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-1 020.4038 0.00 26,~~472~~430.0936 0.00 4,~~883~~879,~~213~~095.0267 B-2 08.1601 0.00 10,~~402~~385.0666 0.00 1,~~918~~917,~~831~~213.8798 B-3 05.1282 0.00 7,~~562~~550.6876 0.00 1,~~395~~393,~~061~~885.4720 B-4 02.0419 0.00 2,~~839~~834.3890 0.00 523,~~770~~328.4078 B-5 02.0691 0.00 3,~~778~~772.6469 0.00 ~~697~~696,~~032~~445.8514 B-6 02.0419 0.00 2,~~840~~836.8537 0.00 ~~524~~523,~~040~~599.9712 Totals 241,114.4101 0.00 1,~~598~~444,~~717~~773.2142 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 821,203.02 0.00000% ~~987~~927.~~02626544~~63582384 0.00000000 0.00000000 0.00000000 A-1 95,589,539.00 5.25000% ~~980~~974.~~24313403~~12033078 4.~~28856373~~26177649 0.00000000 0.00000000 A-2 59,743,461.00 21.~~23000~~78000% ~~980~~974.~~24313406~~12033076 1.~~82161844~~44494508 0.00000000 0.00000000 A-3 0.00 6.~~27000~~72000% ~~980~~974.~~24313406~~12033076 5.~~12177040~~45507382 0.00000000 0.00000000 A-4 77,000,000.00 6.50000% ~~721~~365.~~58883286~~65839636 31.~~90860623~~98064961 0.00000000 0.00000000 A-5 25,174,000.00 6.50000% 0.00000000 0.00000000 0.00000000 0.00000000 A-6 26,497,000.00 6.50000% ~~1021~~1027.~~84123599~~37612484 5.~~53497339~~56495415 0.00000000 0.00000000 A-7 5,200,000.00 6.50000% 0.00000000 0.00000000 0.00000000 0.00000000 A-8 15,000,000.00 6.50000% 1000.00000000 5.41666667 0.00000000 0.00000000 A-9 35,300,000.00 6.50000% 1000.00000000 5.41666657 0.00000000 0.00000000 A-R 50.00 6.50000% 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 6.50000% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 4,904,000.00 6.50000% ~~996~~995.~~58034666~~76121941 5.~~39814437~~39370718 0.00000000 0.00000000 B-2 1,927,000.00 6.50000% ~~996~~995.~~58034769~~76121951 5.~~39814219~~39370524 0.00000000 0.00000000 B-3 1,401,000.00 6.50000% ~~996~~995.~~58034975~~76122056 5.~~39814418~~39370450 0.00000000 0.00000000 B-4 526,000.00 6.50000% ~~996~~995.~~58034221~~76121673 5.~~39813688~~39370722 0.00000000 0.00000000 B-5 700,000.00 6.50000% ~~996~~995.~~58034286~~76121429 5.~~39814286~~39370000 0.00000000 0.00000000 B-6 526,271.72 6.50000% ~~996~~995.~~58035967~~76122008 5.~~39814300~~39371563 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 ~~927~~896.~~63582384~~34188145 A-1 0.~~00006549~~00328352 0.00000000 4.~~28849824~~25849287 0.00000000 ~~974~~967.~~12033078~~52910002 A-2 0.~~00002779~~00111326 0.00000000 1.~~82159065~~44383182 0.00000000 ~~974~~967.~~12033076~~52910013 A-3 0.~~00007817~~00420297 0.00000000 5.~~12169206~~45087085 0.00000000 ~~974~~967.~~12033076~~52910013 A-4 0.~~00005974~~00152597 0.00000000 31.~~90854649~~97912364 0.00000000 ~~365~~66.~~65839636~~99923403 A-5 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-6 0.~~00008454~~00428766 0.00000000 5.~~53488886~~56066649 0.00000000 ~~1027~~1032.~~37612484~~93679133 A-7 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-8 0.~~00008267~~00417333 0.00000000 5.~~41658400~~41249333 0.00000000 1000.00000000 A-9 0.~~00008272~~00417337 0.00000000 5.~~41658385~~41249320 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.~~00008157~~00415579 0.00000000 5.~~39806077~~38955139 0.00000000 ~~995~~994.~~76121941~~92162928 B-2 0.~~00008303~~00415672 0.00000000 5.~~39805916~~38954852 0.00000000 ~~995~~994.~~76121951~~92162948 B-3 0.~~00008565~~00415418 0.00000000 5.~~39805853~~38955032 0.00000000 ~~995~~994.~~76122056~~92162741 B-4 0.~~00007605~~00416350 0.00000000 5.~~39806084~~38954373 0.00000000 ~~995~~994.~~76121673~~92163498 B-5 0.~~00008571~~00415714 0.00000000 5.~~39805714~~38955714 0.00000000 ~~995~~994.~~76121429~~92162857 B-6 0.~~00007601~~00416135 0.00000000 5.~~39806699~~38955428 0.00000000 ~~995~~994.~~76122008~~92163478 (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 ~~6,839~~0.4100 Deposits Payments of Interest and Principal 2925,~~723~~554,~~399~~969.7372 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) ~~192~~31,~~583~~950.2249 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 2925,~~915~~586,~~982~~920.9521 Withdrawals Reimbursement for Servicer Advances 0192,583.0022 Payment of Service Fee 5642,~~096~~232.0703 Payment of Interest and Principal 2925,~~866~~352,~~726~~104.2997 Total Withdrawals (Pool Distribution Amount) 2925,~~922~~586,~~822~~920.3622 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 918,~~779~~399.6625 Servicing Fee Support 917,~~755~~285.2524 Non-Supported Prepayment/Curtailment Interest Shortfall 241,114.4101

SERVICING FEES Gross Servicing Fee 6155,~~658~~727.5478 Master Servicing Fee 43,~~192~~789.7849 Supported Prepayment/Curtailment Interest Shortfall 917,~~755~~285.2524 Net Servicing Fee 5642,~~096~~232.0703

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 ~~704,432~~0.0800 0.00 0.00 0.00 ~~704,432~~0.0800 60 Days 01 0 0 0 01 0437,957.0005 0.00 0.00 0.00 0437,957.0005 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 21 0 0 0 21 ~~704~~437,~~432~~957.0805 0.00 0.00 0.00 ~~704~~437,~~432~~957.0805 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.~~345423~~000000% 0.000000% 0.000000% 0.000000% 0.~~345423~~000000% 0.~~248505~~000000% 0.000000% 0.000000% 0.000000% 0.~~248505~~000000% 60 Days 0.~~000000~~188324% 0.000000% 0.000000% 0.000000% 0.~~000000~~188324% 0.~~000000~~171241% 0.000000% 0.000000% 0.000000% 0.~~000000~~171241% 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.~~345423~~188324% 0.000000% 0.000000% 0.000000% 0.~~345423~~188324% 0.~~248505~~171241% 0.000000% 0.000000% 0.000000% 0.~~248505~~171241%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~318~~151,~~029~~599.3904

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 9,984,271.72 2.85012813% 9,~~941~~933,~~950~~567.5889 34.~~71391188~~07468284% 9695.~~275489~~912977% 100.000000% Class B-1 5,080,271.72 1.45022348% 5,~~058~~054,~~737~~472.5622 12.~~88974039~~07331056% 12.~~829377~~007433% 0.000000% Class B-2 3,153,271.72 0.90013861% 3,~~139~~137,~~905~~258.6924 1.~~17294217~~28688226% 0.~~718844~~788810% 0.000000% Class B-3 1,752,271.72 0.50020663% 1,~~744~~743,~~844~~373.2204 0.~~65180345~~71511991% 0.~~522626~~573494% 0.000000% Class B-4 1,226,271.72 0.35005373% 1,~~221~~220,~~073~~044.8226 0.~~45614395~~50045396% 0.~~196218~~215316% 0.000000% Class B-5 526,271.72 0.15023047% ~~524~~523,~~040~~599.9712 0.~~19576058~~21477684% 0.~~261126~~286542% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~196319~~215427% 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.~~989474~~987875% Weighted Average Pass-Through Rate 6.500000% Weighted Average Maturity (Stepdown Calculation ) ~~349~~348 Beginning Scheduled Collateral Loan Count ~~637~~579 Number Of Loans Paid In Full 5848 Ending Scheduled Collateral Loan Count ~~579~~531 Beginning Scheduled Collateral Balance ~~295~~267,~~962~~694,~~852~~842.0396 Ending Scheduled Collateral Balance ~~267~~243,~~694~~787,~~842~~511.9642 Ending Actual Collateral Balance at 3130-~~Oct~~Nov-2002 ~~283~~255,~~467~~754,~~748~~846.5295 Ending Scheduled Balance For Wells Fargo Serviced ~~265~~242,~~803~~287,~~592~~622.2302 Ending Scheduled Balance For Other Servicers 1,~~891~~499,~~250~~889.7340 Monthly P &I Constant 1,~~933~~750,~~423~~052.3134 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 2925,~~755~~265,~~904~~285.1636 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~206~~186,~~257~~925,~~302~~145.7529 Ending ~~scheduled~~Scheduled Balance For ~~discounted~~Discount Loans 6156,~~437~~862,~~540~~366.2113 Scheduled Principal ~~243~~225,~~301~~753.2864 Unscheduled Principal 2823,~~024~~681,~~707~~577.7990 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% ~~257~~234,~~958~~713,~~904~~722.1135 Greater Than 80%, less than or equal to 85% 1,~~499~~497,~~714~~758.4193 Greater than 85%, less than or equal to 95% 87,~~273~~591,~~554~~340.3909 Greater than 95% 0.00

Filing Compare · WELLS FARGO ASSET SEC CORP MORT PASS THR CERT SER 2002-12