8-K 1 wfm02012.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 25, 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 September 25, 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 September 25, 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: 9/26/02 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 September 25, 2002 distribution. EX-99.1

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 78/31/02 Distribution Date: 89/2625/02 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% ~~820~~818,~~385~~561.5531 0.00 12,~~824~~191.2468 A-1 94978WAA8 SEQ 5.25000% 9594,~~185~~736,~~720~~207.8232 ~~416~~414,~~435~~461.7938 ~~449~~494,~~513~~977.5006 A-2 94978WAB6 SEQ 2.~~23688~~21000% 59,~~491~~210,~~074~~128.6471 ~~110~~109,~~894~~042.8781 ~~280~~309,~~945~~360.9365 A-3 94978WAC4 SEQ 6.~~26312~~29000% 0.00 310,~~498~~352.4963 0.00 A-4 94978WAD2 SEQ 6.50000% 7675,~~533~~999,~~446~~823.3429 ~~414~~411,~~554~~656.4425 ~~533~~1,~~623~~244,868.0551 A-5 94978WAE0 SEQ 6.50000% 2417,~~692~~316,~~705~~172.0009 ~~133~~93,~~751~~793.5978 717,~~376~~316,~~532~~172.9109 A-6 94978WAF7 SEQ 6.50000% 26,~~640~~784,~~517~~819.0726 ~~144~~145,~~302~~081.2010 (~~144~~145,~~302~~081.2010) A-7 94978WAG5 SEQ 6.50000% 0.00 0.00 0.00 A-8 94978WAH3 SEQ 6.50000% 15,000,000.00 81,~~249~~248.6613 0.00 A-9 94978WAJ9 SEQ 6.50000% 35,300,000.00 191,~~207~~203.5494 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,~~899~~895,~~735~~493.8893 26,~~540~~516.1365 4,~~241~~134.9549 B-2 94978WAP5 SUB 6.50000% 1,~~925~~923,~~324~~657.4459 10,~~428~~419.8057 1,~~666~~624.8562 B-3 94978WAQ3 SUB 6.50000% 1,~~399~~398,~~781~~569.8194 7,~~582~~575.1241 1,~~211~~181.8616 B-4 94978WAR1 SUB 6.50000% 525,~~542~~087.6364 2,~~846~~844.6816 ~~454~~443.9946 B-5 94978WAS9 SUB 6.50000% ~~699~~698,~~391~~785.3484 3,~~788~~785.3500 ~~605~~590.5016 B-6 94978WAT7 SUB 6.50000% 525,~~814~~358.1289 2,~~848~~845.1563 ~~455~~443.2269 Totals ~~343~~335,~~639~~132,~~439~~665.6481 1,~~856~~810,~~928~~826.8144 819,~~506~~230,~~773~~906.8047

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 ~~818~~816,~~561~~369.3163 12,~~824~~191.2468 0.00 A-1 0.00 94,~~736~~241,~~207~~230.3227 ~~865~~909,~~949~~438.2944 0.00 A-2 0.00 5958,~~210~~900,~~128~~768.7106 ~~391~~418,~~840~~403.8046 0.00 A-3 0.00 0.00 310,~~498~~352.4963 0.00 A-4 0.00 7574,~~999~~754,~~823~~954.2978 ~~948~~1,~~177~~656,524.4976 0.00 A-5 0.00 ~~17,316,172~~0.0900 717,~~510~~409,~~284~~965.5087 0.00 A-6 0.00 26,~~784~~929,~~819~~900.2637 0.00 0.00 A-7 0.00 0.00 0.00 0.00 A-8 0.00 15,000,000.00 81,~~249~~248.6613 0.00 A-9 0.00 35,300,000.00 191,~~207~~203.5494 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,~~895~~891,~~493~~359.9344 30,~~782~~651.0814 0.00 B-2 0.00 1,~~923~~922,~~657~~032.5996 12,~~095~~044.6519 0.00 B-3 0.00 1,~~398~~397,~~569~~388.9478 8,~~793~~756.9857 0.00 B-4 0.00 ~~525~~524,~~087~~644.6418 3,~~301~~287.6762 0.00 B-5 0.00 698,~~785~~195.8468 4,~~393~~375.8516 0.00 B-6 0.00 ~~525~~524,~~358~~915.8920 3,~~303~~289.3732 0.00 Totals 0.00 ~~335~~315,~~132~~901,~~665~~759.8135 1021,~~363~~041,~~702~~732.6191 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 ~~820~~818,~~385~~561.5531 ~~740~~743.1936 1,~~084~~448.0533 0.00 0.00 A-1 95,589,539.00 9594,~~185~~736,~~720~~207.8232 157,~~245~~054.6340 ~~434~~487,~~267~~922.8666 0.00 0.00 A-2 59,743,461.00 59,~~491~~210,~~074~~128.6471 94,~~528~~409.5200 ~~271~~304,~~417~~951.4165 0.00 0.00 A-3 0.00 0.00 0.00 0.00 0.00 0.00 A-4 77,000,000.00 7675,~~533~~999,~~446~~823.3429 1817,~~098~~741.2884 ~~515~~1,~~524~~227,126.7768 0.00 0.00 A-5 25,174,000.00 2417,~~692~~316,~~705~~172.0009 ~~250~~246,~~181~~789.4070 717,~~126~~069,~~351~~382.5139 0.00 0.00 A-6 26,497,000.00 26,~~640~~784,~~517~~819.0726 0.00 0.00 (~~144~~145,~~302~~081.2010) 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,~~899~~895,~~735~~493.8893 4,~~241~~134.9549 0.00 0.00 0.00 B-2 1,927,000.00 1,~~925~~923,~~324~~657.4459 1,~~666~~624.8562 0.00 0.00 0.00 B-3 1,401,000.00 1,~~399~~398,~~781~~569.8194 1,~~211~~181.8616 0.00 0.00 0.00 B-4 526,000.00 525,~~542~~087.6364 ~~454~~443.9946 0.00 0.00 0.00 B-5 700,000.00 ~~699~~698,~~391~~785.3484 ~~605~~590.5016 0.00 0.00 0.00 B-6 526,271.72 525,~~814~~358.1289 ~~455~~443.2269 0.00 0.00 0.00 Totals 350,309,574.74 ~~343~~335,~~639~~132,~~439~~665.6481 ~~302~~285,~~430~~155.3988 819,~~348~~090,~~645~~831.6071 (~~144~~145,~~302~~081.2010) 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 12,~~824~~191.2468 ~~818~~816,~~561~~369.3163 0.~~99678312~~99411426 12,~~824~~191.2468 A-1 ~~449~~494,~~513~~977.5006 94,~~736~~241,~~207~~230.3227 0.~~99107296~~98589481 ~~449~~494,~~513~~977.5006 A-2 ~~280~~309,~~945~~360.9365 5958,~~210~~900,~~128~~768.7106 0.~~99107296~~98589481 ~~280~~309,~~945~~360.9365 A-3 0.00 0.00 0.00000000 0.00 A-4 ~~533~~1,~~623~~244,868.0551 7574,~~999~~754,~~823~~954.2978 0.~~98701069~~97084357 ~~533~~1,~~623~~244,868.0551 A-5 ~~7,376,532.91~~ 17,316,172.09 0.~~68785938~~00 70.00000000 17,~~376~~316,~~532~~172.9109 A-6 (~~144~~145,~~302~~081.2010) 26,~~784~~929,~~819~~900.2637 1.~~01086233~~01633771 (~~144~~145,~~302~~081.2010) 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,~~241~~134.9549 4,~~895~~891,~~493~~359.9344 0.~~99826548~~99742240 4,~~241~~134.9549 B-2 1,~~666~~624.8562 1,~~923~~922,~~657~~032.5996 0.~~99826549~~99742240 1,~~666~~624.8562 B-3 1,~~211~~181.8616 1,~~398~~397,~~569~~388.9478 0.~~99826548~~99742240 1,~~211~~181.8616 B-4 ~~454~~443.9946 ~~525~~524,~~087~~644.6418 0.~~99826548~~99742240 ~~454~~443.9946 B-5 ~~605~~590.5016 698,~~785~~195.8468 0.~~99826549~~99742240 ~~605~~590.5016 B-6 ~~455~~443.2269 ~~525~~524,~~358~~915.8920 0.~~99826548~~99742240 ~~455~~443.2269 Totals 819,~~506~~230,~~773~~906.8047 ~~335~~315,~~132~~901,~~665~~759.8135 0.~~95667572~~90177883 819,~~506~~230,~~773~~906.8047

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 821,203.02 ~~999~~996.~~00454579~~78312191 0.~~90134837~~90520856 1.~~32007552~~76366862 0.00000000 A-1 95,589,539.00 ~~995~~991.~~77549820~~07295956 0.~~15949057~~07379887 45.~~54304796~~10435206 0.00000000 A-2 59,743,461.00 ~~995~~991.~~77549818~~07295960 0.~~15949059~~07379887 45.~~54304798~~10435192 0.00000000 A-3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-4 77,000,000.00 ~~993~~987.~~94086156~~01069208 0.~~23504260~~23041351 615.~~69512688~~93671013 0.00000000 A-5 25,174,000.00 ~~980~~687.~~88126639~~85938230 9.~~93808692~~80335664 ~~283~~678.~~08379717~~05602566 0.00000000 A-6 26,497,000.00 ~~1005~~1010.~~41635166~~86233385 0.00000000 0.00000000 (5.~~44598256~~47537834) 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 ~~999~~998.~~13048124~~26548328 0.~~86499796~~84308524 0.00000000 0.00000000 B-2 1,927,000.00 ~~999~~998.~~13048262~~26548521 0.~~86499741~~84308251 0.00000000 0.00000000 B-3 1,401,000.00 ~~999~~998.~~13048537~~26548180 0.~~86499643~~84308351 0.00000000 0.00000000 B-4 526,000.00 ~~999~~998.~~13047529~~26547529 0.~~86500000~~84307985 0.00000000 0.00000000 B-5 700,000.00 ~~999~~998.~~13048571~~26548571 0.~~86500000~~84308571 0.00000000 0.00000000 B-6 526,271.72 ~~999~~998.~~13048719~~26547776 0.~~86499043~~84308159 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 2.~~22142388~~66886500 ~~996~~994.~~78312191~~11425691 0.~~99678312~~99411426 2.~~22142388~~66886500 A-1 0.00000000 45.~~70253863~~17815093 ~~991~~985.~~07295956~~89480874 0.~~99107296~~98589481 45.~~70253863~~17815093 A-2 0.00000000 45.~~70253858~~17815079 ~~991~~985.~~07295960~~89480881 0.~~99107296~~98589481 45.~~70253858~~17815079 A-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-4 0.00000000 616.~~93016948~~16712351 ~~987~~970.~~01069208~~84356857 0.~~98701069~~97084357 616.~~93016948~~16712351 A-5 0.00000000 ~~293.02188409~~ 687.85938230 0.~~68785938~~00000000 ~~293~~0.~~02188409~~00000000 687.85938230 A-6 0.00000000 (5.~~44598256~~47537834) 1,~~010~~016.~~86233385~~33771257 1.~~01086233~~01633771 (5.~~44598256~~47537834) 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.~~86499796~~84308524 ~~998~~997.~~26548328~~42239804 0.~~99826548~~99742240 0.~~86499796~~84308524 B-2 0.00000000 0.~~86499741~~84308251 ~~998~~997.~~26548521~~42239751 0.~~99826549~~99742240 0.~~86499741~~84308251 B-3 0.00000000 0.~~86499643~~84308351 ~~998~~997.~~26548180~~42239829 0.~~99826548~~99742240 0.~~86499643~~84308351 B-4 0.00000000 0.~~86500000~~84307985 ~~998~~997.~~26547529~~42239544 0.~~99826548~~99742240 0.~~86500000~~84307985 B-5 0.00000000 0.~~86500000~~84308571 ~~998~~997.~~26548571~~42240000 0.~~99826549~~99742240 0.~~86500000~~84308571 B-6 0.00000000 0.~~86499043~~84308159 ~~998~~997.~~26547776~~42239617 0.~~99826548~~99742240 0.~~86499043~~84308159 (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% ~~820~~818,~~385~~561.5531 0.00 0.00 0.00 A-1 95,589,539.00 5.25000% 9594,~~185~~736,~~720~~207.8232 ~~416~~414,~~437~~470.5391 0.00 0.00 A-2 59,743,461.00 2.~~23688~~21000% 59,~~491~~210,~~074~~128.6471 ~~110~~109,~~895~~045.3332 0.00 0.00 A-3 0.00 6.~~26312~~29000% 59,~~491~~210,~~074~~128.6471 310,~~499~~359.7876 0.00 0.00 A-4 77,000,000.00 6.50000% 7675,~~533~~999,~~446~~823.3429 ~~414~~411,~~556~~665.1771 0.00 0.00 A-5 25,174,000.00 6.50000% 2417,~~692~~316,~~705~~172.0009 ~~133~~93,~~752~~795.1593 0.00 0.00 A-6 26,497,000.00 6.50000% 26,~~640~~784,~~517~~819.0726 ~~144~~145,~~302~~084.8044 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,~~899~~895,~~735~~493.8893 26,~~540~~517.2426 0.00 0.00 B-2 1,927,000.00 6.50000% 1,~~925~~923,~~324~~657.4459 10,~~428~~419.8481 0.00 0.00 B-3 1,401,000.00 6.50000% 1,~~399~~398,~~781~~569.8194 7,~~582~~575.1559 0.00 0.00 B-4 526,000.00 6.50000% 525,~~542~~087.6364 2,~~846~~844.6922 0.00 0.00 B-5 700,000.00 6.50000% ~~699~~698,~~391~~785.3484 3,~~788~~785.3709 0.00 0.00 B-6 526,271.72 6.50000% 525,~~814~~358.1289 2,~~848~~845.1669 0.00 0.00 Totals 350,309,574.74 1,~~856~~810,~~936~~868.5406 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 ~~818~~816,~~561~~369.3163 A-1 19.7453 0.00 ~~416~~414,~~435~~461.7938 0.00 94,~~736~~241,~~207~~230.3227 A-2 02.4651 0.00 ~~110~~109,~~894~~042.8781 0.00 5958,~~210~~900,~~128~~768.7106 A-3 17.3013 0.00 310,~~498~~352.4963 0.00 5958,~~210~~900,~~128~~768.7106 A-4 19.7346 0.00 ~~414~~411,~~554~~656.4425 0.00 7574,~~999~~754,~~823~~954.2978 A-5 02.5616 0.00 ~~133~~93,~~751~~793.5978 0.00 ~~17,316,172~~0.0900 A-6 03.6033 0.00 ~~144~~145,~~302~~081.2010 0.00 26,~~784~~929,~~819~~900.2637 A-7 0.00 0.00 0.00 0.00 0.00 A-8 01.3487 0.00 81,~~249~~248.6613 0.00 15,000,000.00 A-9 04.8039 0.00 191,~~207~~203.5494 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 0.1161 0.00 26,~~540~~516.1365 0.00 4,~~895~~891,~~493~~359.9344 B-2 0.0424 0.00 10,~~428~~419.8057 0.00 1,~~923~~922,~~657~~032.5996 B-3 0.0317 0.00 7,~~582~~575.1241 0.00 1,~~398~~397,~~569~~388.9478 B-4 0.0107 0.00 2,~~846~~844.6816 0.00 ~~525~~524,~~087~~644.6418 B-5 0.0209 0.00 3,~~788~~785.3500 0.00 698,~~785~~195.8468 B-6 0.0107 0.00 2,~~848~~845.1563 0.00 ~~525~~524,~~358~~915.8920 Totals 741.7563 0.00 1,~~856~~810,~~928~~826.8144 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% ~~999~~996.~~00454579~~78312191 0.00000000 0.00000000 0.00000000 A-1 95,589,539.00 5.25000% ~~995~~991.~~77549820~~07295956 4.~~35651782~~33594423 0.00000000 0.00000000 A-2 59,743,461.00 2.~~23688~~21000% ~~995~~991.~~77549818~~07295960 1.~~85619193~~82522603 0.00000000 0.00000000 A-3 0.00 6.~~26312~~29000% ~~995~~991.~~77549818~~07295960 5.~~19721782~~19487413 0.00000000 0.00000000 A-4 77,000,000.00 6.50000% ~~993~~987.~~94086156~~01069208 5.~~38384636~~34630792 0.00000000 0.00000000 A-5 25,174,000.00 6.50000% ~~980~~687.~~88126639~~85938230 53.~~31310678~~72590490 0.00000000 0.00000000 A-6 26,497,000.00 6.50000% ~~1005~~1010.~~41635166~~86233385 5.~~44600521~~47550440 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% ~~999~~998.~~13048124~~26548328 5.~~41195759~~40727162 0.00000000 0.00000000 B-2 1,927,000.00 6.50000% ~~999~~998.~~13048262~~26548521 5.~~41195641~~40727037 0.00000000 0.00000000 B-3 1,401,000.00 6.50000% ~~999~~998.~~13048537~~26548180 5.~~41195575~~40727338 0.00000000 0.00000000 B-4 526,000.00 6.50000% ~~999~~998.~~13047529~~26547529 5.~~41195817~~40726236 0.00000000 0.00000000 B-5 700,000.00 6.50000% ~~999~~998.~~13048571~~26548571 5.~~41195714~~40727143 0.00000000 0.00000000 B-6 526,271.72 6.50000% ~~999~~998.~~13048719~~26547776 5.~~41195715~~40726376 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 ~~996~~994.~~78312191~~11425691 A-1 0.~~00001820~~00009970 0.00000000 4.~~35649962~~33584453 0.00000000 ~~991~~985.~~07295956~~89480874 A-2 0.~~00000770~~00004201 0.00000000 1.~~85618423~~82518401 0.00000000 ~~991~~985.~~07295960~~89480881 A-3 0.~~00002176~~00011934 0.00000000 5.~~19719623~~19475479 0.00000000 ~~991~~985.~~07295960~~89480881 A-4 0.~~00002247~~00012286 0.00000000 5.~~38382390~~34618506 0.00000000 ~~987~~970.~~01069208~~84356857 A-5 0.~~00002225~~00008580 0.00000000 53.~~31308453~~72581950 0.00000000 ~~687~~0.~~85938230~~00000000 A-6 0.~~00002264~~00012567 0.00000000 5.~~44598256~~47537834 0.00000000 ~~1010~~1016.~~86233385~~33771257 A-7 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-8 0.~~00002267~~00012467 0.00000000 5.~~41664400~~41654200 0.00000000 1000.00000000 A-9 0.~~00002266~~00012436 0.00000000 5.~~41664419~~41654221 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.~~00002243~~00012439 0.00000000 5.~~41193515~~40714723 0.00000000 ~~998~~997.~~26548328~~42239804 B-2 0.~~00002076~~00012455 0.00000000 5.~~41193565~~40714582 0.00000000 ~~998~~997.~~26548521~~42239751 B-3 0.~~00002141~~00012134 0.00000000 5.~~41193433~~40714490 0.00000000 ~~998~~997.~~26548180~~42239829 B-4 0.~~00001901~~00013308 0.00000000 5.~~41193916~~40714829 0.00000000 ~~998~~997.~~26547529~~42239544 B-5 0.~~00002857~~00012857 0.00000000 5.~~41192857~~40714286 0.00000000 ~~998~~997.~~26548571~~42240000 B-6 0.~~00001900~~00013301 0.00000000 5.~~41193815~~40714975 0.00000000 ~~998~~997.~~26547776~~42239617 (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 ~~30,737~~0.7700 Deposits Payments of Interest and Principal 1021,~~341~~195,~~088~~164.6404 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) ~~61,176~~0.7000 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 1021,~~402~~195,~~265~~164.3404 Withdrawals Reimbursement for Servicer Advances 061,176.0070 Payment of Service Fee 6961,~~300~~014.5156 Payment of Interest and Principal 1021,~~363~~041,~~702~~732.6093 Total Withdrawals (Pool Distribution Amount) 1021,~~433~~163,~~003~~924.1119 Ending Balance 031,239.0084

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 713,~~167~~593.5257 Servicing Fee Support 713,~~159~~551.7794 Non-Supported Prepayment/Curtailment Interest Shortfall 741.7563

SERVICING FEES Gross Servicing Fee 7169,~~592~~818.0282 Master Servicing Fee 4,~~868~~747.2668 Supported Prepayment/Curtailment Interest Shortfall 713,~~159~~551.7794 Net Servicing Fee 6961,~~300~~014.5156

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 10 0 0 0 10 ~~435,619~~0.1100 0.00 0.00 0.00 ~~435,619~~0.1100 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 10 0 0 0 10 ~~435,619~~0.1100 0.00 0.00 0.00 ~~435,619~~0.1100 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.~~141243~~000000% 0.000000% 0.000000% 0.000000% 0.~~141243~~000000% 0.~~128328~~000000% 0.000000% 0.000000% 0.000000% 0.~~128328~~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% 0.000000% 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.~~141243~~000000% 0.000000% 0.000000% 0.000000% 0.~~141243~~000000% 0.~~128328~~000000% 0.000000% 0.000000% 0.000000% 0.~~128328~~000000%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~225~~139,~~577~~236.8410

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 9,984,271.72 2.85012813% 9,~~966~~958,~~953~~536.8324 23.~~97403233~~15241557% 9796.~~018686~~839417% 100.000000% Class B-1 5,080,271.72 1.45022348% 5,~~071~~067,~~459~~176.9080 1.~~51326935~~60403564% 1.~~464340~~552392% 0.000000% Class B-2 3,153,271.72 0.90013861% 3,~~147~~145,~~802~~143.3184 0.~~93927051~~99560821% 0.~~575404~~610004% 0.000000% Class B-3 1,752,271.72 0.50020663% 1,~~749~~747,~~232~~755.3706 0.~~52195221~~55325905% 0.~~418340~~443495% 0.000000% Class B-4 1,226,271.72 0.35005373% 1,~~224~~223,~~144~~110.7388 0.~~36527168~~38718077% 0.~~157064~~166509% 0.000000% Class B-5 526,271.72 0.15023047% ~~525~~524,~~358~~915.8920 0.~~15676147~~16616406% 0.~~209021~~221589% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~157145~~166595% 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 76.~~000366~~997506% Weighted Average Pass-Through Rate 6.500000% Weighted Average Maturity(Stepdown Calculation ) ~~352~~351 Beginning Scheduled Collateral Loan Count ~~725~~708 Number Of Loans Paid In Full 1736 Ending Scheduled Collateral Loan Count ~~708~~672 Beginning Scheduled Collateral Balance ~~343~~335,~~639~~132,~~439~~665.6483 Ending Scheduled Collateral Balance ~~335~~315,~~132~~901,~~665~~759.8335 Ending Actual Collateral Balance at 31-~~Jul~~Aug-2002 ~~339~~326,~~458~~132,~~228~~947.9654 Ending Scheduled Balance For Wells Fargo Serviced ~~332~~313,~~804~~576,~~976~~045.2149 Ending Scheduled Balance For Other Servicers 2,~~327~~325,~~689~~713.6286 Monthly P &I Constant 2,~~240~~184,~~068~~891.4109 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 1020,~~299~~977,~~215~~177.2762 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~266~~247,~~032~~394,~~376~~214.8450 Ending scheduled Balance For discounted Loans 6968,~~100~~507,~~288~~544.9985 Scheduled Principal ~~297~~283,~~536~~088.2719 Unscheduled Principal 818,~~209~~947,~~237~~818.5429 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% ~~324~~305,~~769~~532,~~132~~824.4442 Greater Than 80%, less than or equal to 85% 1,~~503~~502,~~950~~340.4197 Greater than 85%, less than or equal to 95% 8,~~882~~874,~~228~~893.9832 Greater than 95% 0.00

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