8-K 1 we600608-8k.txt CURRENT REPORT 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: August 30, 2001 (Date of earliest event reported) Commission File No. 333-62184 Wells Fargo Asset Securities Corporation -------------------------------------------------------------------------------- Delaware 52-1972128 ------------------------------ ----------------------------------- (State of Incorporation) I.R.S. Employer Identification No. 7485 New Horizon Way, Frederick, Maryland 21703 ----------------------------------------- ------------------ Address of principal executive offices (Zip Code) (301) 846-8881 -------------------------------------------------------------------------------- Registrant's Telephone Number, including area code -------------------------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report) ITEM 5. Other Events On August 30, 2001, Wells Fargo Asset Securities Corporation, a Delaware corporation (the "Registrant"), sold Mortgage Pass-Through Certificates, Series 2001-18, Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class A-13, Class A-14, Class A-15, Class A-16, Class A-PO, Class A-R, Class A-LR, Class B-1, Class B-2 and Class B-3 (the "Offered Certificates"), having an aggregate original principal balance of $646,665,568.05. The Offered Certificates were issued pursuant to a Pooling and Servicing Agreement, dated as of August 30, 2001, among the Registrant, Wells Fargo Bank Minnesota, National Association, as master servicer (the "Master Servicer" or "Wells Fargo Bank") and First Union National Bank, as trustee (the "Agreement"), a copy of which is filed as an exhibit hereto. Mortgage Pass-Through Certificates, Series 2001-18, Class B-4, Class B-5 and Class B-6 Certificates, having an aggregate initial principal balance of $3,577,005.21 (the "Private Class B Certificates" and, together with the Offered Certificates, the "Certificates"), were also issued pursuant to the Agreement. As of the date of initial issuance, the Offered Certificates evidenced an approximate 99.45% undivided interest in a trust fund (the "Trust Estate"), consisting principally of a pool of fixed interest rate, conventional, monthly pay, fully-amortizing, one-to four-family residential first mortgage loans, other than the Fixed Retained Yield (as defined in the Agreement), which may include loans secured by shares issued by cooperative housing corporations. The remaining undivided interests in the Trust Estate are evidenced by the Private Class B Certificates. Distributions on the Private Class B Certificates are subordinated to distributions on the Offered Certificates. Interest on the Offered Certificates will be distributed on each Distribution Date (as defined in the Agreement). Monthly distributions in reduction of the principal balance of the Offered Certificates will be allocated to the Offered Certificates in accordance with the priorities set forth in the Agreement. Distributions of interest and in reduction of principal balance on any Distribution Date will be made to the extent that the Pool Distribution Amount is sufficient therefor. Elections will be made to treat the Trust Estate as two REMICs for federal income tax purposes (the "Upper-Tier REMIC" and "Lower-Tier REMIC," respectively). The Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class A-13, Class A-14, Class A-15, Class A-16, Class A-PO, Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6 Certificates will be treated as "regular interests" in the Upper-Tier REMIC and the Class A-R and Class A-LR Certificates will be treated as the "residual interests" in the Upper-Tier REMIC and Lower-Tier REMIC, respectively. ITEM 7. Financial Statements and Exhibits (c) Exhibits Item 601(a) of Regulation S-K Exhibit No. Description ----------- ----------- (EX-4) Pooling and Servicing Agreement, dated as of August 30, 2001, among Wells Fargo Asset Securities Corporation, Wells Fargo Bank Minnesota, National Association and First Union National Bank, as trustee. 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 August 30, 2001 /s/ Alan S. McKenney --------------------------------- Alan S. McKenney Vice President INDEX TO EXHIBITS ----------------- Paper (P) or Exhibit No. Description Electronic (E) ----------- ----------- -------------- (EX-4) Pooling and Servicing E Agreement, dated as of August 30, 2001 among Wells Fargo Asset Securities Corporation, Wells Fargo Bank Minnesota, National Association and First Union National Bank, as trustee.

Wells Fargo Asset Securities Corporation Mortgage Pass-Through Certificates Record Date: 8/31/01 Distribution Date: 9/25/01 WFMBS Series: 2001-18 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 94977HAS3 PO 0.00000% 593,468.05 0.00 581.55 A-1 94977HAA2 SEQ 6.75000% 62,949,000.00 354,088.13 0.00 A-2 94977HAB0 SEQ 6.75000% 219,700,000.00 1,235,812.50 5,257,585.05 A-3 94977HAC8 SEQ 6.75000% 13,588,000.00 76,432.50 0.00 A-4 94977HAD6 SEQ 6.75000% 41,060,000.00 230,962.50 0.00 A-5 94977HAE4 SEQ 6.75000% 6,110,000.00 34,368.75 (34,368.75) A-6 94977HAF1 SEQ 6.75000% 9,154,300.00 51,492.94 34,368.75 A-7 94977HAG9 SEQ 6.10000% 15,312,500.00 77,838.54 414,983.46 A-8 94977HAH7 SEQ 5.85000% 25,028,302.00 122,012.97 554,981.66 A-9 94977HAJ3 SEQ 4.30000% 18,559,198.00 66,503.79 439,555.85 A-10 94977HAK0 SEQ 4.20000% 0.00 64,957.19 0.00 A-11 94977HAL8 SEQ 6.75000% 25,100,000.00 141,187.50 496,941.21 A-12 94977HAM6 SEQ 6.75000% 5,731,000.00 32,236.88 (32,236.88) A-13 94977HAN4 SEQ 6.75000% 142,504,000.00 801,585.00 3,225,340.49 A-14 94977HAP9 SEQ 6.75000% 20,404,700.00 114,776.44 0.00 A-15 94977HAQ7 SEQ 6.75000% 15,100,000.00 84,937.50 480,904.46 A-16 94977HAR5 SEQ 6.75000% 9,190,000.00 51,693.75 0.00 A-R 94977HAT1 RES 6.75000% 50.00 0.28 50.00 A-LR 94977HAU8 RES 6.75000% 50.00 0.28 50.00 B-1 94977HAV6 SUB 6.75000% 10,404,000.00 58,522.50 7,931.04 B-2 94977HAW4 SUB 6.75000% 3,901,000.00 21,943.13 2,973.76 B-3 94977HAX2 SUB 6.75000% 2,276,000.00 12,802.50 1,735.01 B-4 94977HAY0 SUB 6.75000% 1,301,000.00 7,318.13 991.76 B-5 94977HAZ7 SUB 6.75000% 975,000.00 5,484.38 743.25 B-6 94977HBA1 SUB 6.75000% 1,301,005.21 7,318.15 360.66 Totals 650,242,573.26 3,654,276.23 10,853,472.33

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-PO 0.00 592,886.50 581.55 0.00 A-1 0.00 62,949,000.00 354,088.13 0.00 A-2 0.00 214,442,414.95 6,493,397.55 0.00 A-3 0.00 13,588,000.00 76,432.50 0.00 A-4 0.00 41,060,000.00 230,962.50 0.00 A-5 0.00 6,144,368.75 0.00 0.00 A-6 0.00 9,119,931.25 85,861.69 0.00 A-7 0.00 14,897,516.54 492,822.00 0.00 A-8 0.00 24,473,320.34 676,994.63 0.00 A-9 0.00 18,119,642.15 506,059.64 0.00 A-10 0.00 0.00 64,957.19 0.00 A-11 0.00 24,603,058.79 638,128.71 0.00 A-12 0.00 5,763,236.88 0.00 0.00 A-13 0.00 139,278,659.51 4,026,925.49 0.00 A-14 0.00 20,404,700.00 114,776.44 0.00 A-15 0.00 14,619,095.54 565,841.96 0.00 A-16 0.00 9,190,000.00 51,693.75 0.00 A-R 0.00 0.00 50.28 0.00 A-LR 0.00 0.00 50.28 0.00 B-1 0.00 10,396,068.96 66,453.54 0.00 B-2 0.00 3,898,026.24 24,916.89 0.00 B-3 0.00 2,274,264.99 14,537.51 0.00 B-4 0.00 1,300,008.24 8,309.89 0.00 B-5 0.00 974,256.75 6,227.63 0.00 B-6 631.10 1,300,013.45 7,678.81 631.10 Totals 631.10 639,388,469.83 14,507,748.56 631.10 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 593,468.05 593,468.05 537.75 43.80 0.00 0.00 A-1 62,949,000.00 62,949,000.00 0.00 0.00 0.00 0.00 A-2 219,700,000.00 219,700,000.00 232,782.50 5,024,802.55 0.00 0.00 A-3 13,588,000.00 13,588,000.00 0.00 0.00 0.00 0.00 A-4 41,060,000.00 41,060,000.00 0.00 0.00 0.00 0.00 A-5 6,110,000.00 6,110,000.00 0.00 0.00 (34,368.75) 0.00 A-6 9,154,300.00 9,154,300.00 1,521.70 32,847.05 0.00 0.00 A-7 15,312,500.00 15,312,500.00 18,373.62 396,609.84 0.00 0.00 A-8 25,028,302.00 25,028,302.00 24,572.12 530,409.54 0.00 0.00 A-9 18,559,198.00 18,559,198.00 19,461.58 420,094.27 0.00 0.00 A-10 0.00 0.00 0.00 0.00 0.00 0.00 A-11 25,100,000.00 25,100,000.00 22,002.35 474,938.86 0.00 0.00 A-12 5,731,000.00 5,731,000.00 0.00 0.00 (32,236.88) 0.00 A-13 142,504,000.00 142,504,000.00 142,803.74 3,082,536.74 0.00 0.00 A-14 20,404,700.00 20,404,700.00 0.00 0.00 0.00 0.00 A-15 15,100,000.00 15,100,000.00 21,292.31 459,612.15 0.00 0.00 A-16 9,190,000.00 9,190,000.00 0.00 0.00 0.00 0.00 B-1 10,404,000.00 10,404,000.00 7,931.04 0.00 0.00 0.00 B-2 3,901,000.00 3,901,000.00 2,973.76 0.00 0.00 0.00 B-3 2,276,000.00 2,276,000.00 1,735.01 0.00 0.00 0.00 B-4 1,301,000.00 1,301,000.00 991.76 0.00 0.00 0.00 B-5 975,000.00 975,000.00 743.25 0.00 0.00 0.00 B-6 1,301,005.21 1,301,005.21 360.66 0.00 0.00 631.10 Totals 650,242,473.26 650,242,473.26 498,083.15 10,421,894.80 (66,605.63) 631.10 (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 581.55 592,886.50 0.99902008 581.55 A-1 0.00 62,949,000.00 1.00000000 0.00 A-2 5,257,585.05 214,442,414.95 0.97606925 5,257,585.05 A-3 0.00 13,588,000.00 1.00000000 0.00 A-4 0.00 41,060,000.00 1.00000000 0.00 A-5 (34,368.75) 6,144,368.75 1.00562500 (34,368.75) A-6 34,368.75 9,119,931.25 0.99624562 34,368.75 A-7 414,983.46 14,897,516.54 0.97289904 414,983.46 A-8 554,981.66 24,473,320.34 0.97782584 554,981.66 A-9 439,555.85 18,119,642.15 0.97631601 439,555.85 A-10 0.00 0.00 0.00000000 0.00 A-11 496,941.21 24,603,058.79 0.98020155 496,941.21 A-12 (32,236.88) 5,763,236.88 1.00562500 (32,236.88) A-13 3,225,340.49 139,278,659.51 0.97736667 3,225,340.49 A-14 0.00 20,404,700.00 1.00000000 0.00 A-15 480,904.46 14,619,095.54 0.96815202 480,904.46 A-16 0.00 9,190,000.00 1.00000000 0.00 B-1 7,931.04 10,396,068.96 0.99923769 7,931.04 B-2 2,973.76 3,898,026.24 0.99923769 2,973.76 B-3 1,735.01 2,274,264.99 0.99923769 1,735.01 B-4 991.76 1,300,008.24 0.99923769 991.76 B-5 743.25 974,256.75 0.99923769 743.25 B-6 991.76 1,300,013.45 0.99923770 360.66 Totals 10,854,003.43 639,388,469.83 0.98330776 10,853,372.33

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-PO 593,468.05 1000.00000000 0.90611449 0.07380347 0.00000000 A-1 62,949,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-2 219,700,000.00 1000.00000000 1.05954711 22.87119959 0.00000000 A-3 13,588,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-4 41,060,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 6,110,000.00 1000.00000000 0.00000000 0.00000000 (5.62500000) A-6 9,154,300.00 1000.00000000 0.16622789 3.58815529 0.00000000 A-7 15,312,500.00 1000.00000000 1.19990988 25.90105078 0.00000000 A-8 25,028,302.00 1000.00000000 0.98177335 21.19239012 0.00000000 A-9 18,559,198.00 1000.00000000 1.04862182 22.63536765 0.00000000 A-10 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-11 25,100,000.00 1000.00000000 0.87658765 18.92186693 0.00000000 A-12 5,731,000.00 1000.00000000 0.00000000 0.00000000 (5.62500087) A-13 142,504,000.00 1000.00000000 1.00210338 21.63122958 0.00000000 A-14 20,404,700.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-15 15,100,000.00 1000.00000000 1.41008675 30.43789073 0.00000000 A-16 9,190,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-R 50.00 1000.00000000 44.20000000 955.80000000 0.00000000 A-LR 50.00 1000.00000000 44.20000000 955.80000000 0.00000000 B-1 10,404,000.00 1000.00000000 0.76230681 0.00000000 0.00000000 B-2 3,901,000.00 1000.00000000 0.76230710 0.00000000 0.00000000 B-3 2,276,000.00 1000.00000000 0.76230668 0.00000000 0.00000000 B-4 1,301,000.00 1000.00000000 0.76230592 0.00000000 0.00000000 B-5 975,000.00 1000.00000000 0.76230769 0.00000000 0.00000000 B-6 1,301,005.21 1000.00000000 0.27721641 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 0.97991796 999.02008204 0.99902008 0.97991796 A-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-2 0.00000000 23.93074670 976.06925330 0.97606925 23.93074670 A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 (5.62500000) 1,005.62500000 1.00562500 (5.62500000) A-6 0.00000000 3.75438319 996.24561681 0.99624562 3.75438319 A-7 0.00000000 27.10096065 972.89903935 0.97289904 27.10096065 A-8 0.00000000 22.17416347 977.82583653 0.97782584 22.17416347 A-9 0.00000000 23.68398947 976.31601053 0.97631601 23.68398947 A-10 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-11 0.00000000 19.79845458 980.20154542 0.98020155 19.79845458 A-12 0.00000000 (5.62500087) 1,005.62500087 1.00562500 (5.62500087) A-13 0.00000000 22.63333303 977.36666697 0.97736667 22.63333303 A-14 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-15 0.00000000 31.84797748 968.15202252 0.96815202 31.84797748 A-16 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-R 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 A-LR 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 B-1 0.00000000 0.76230681 999.23769319 0.99923769 0.76230681 B-2 0.00000000 0.76230710 999.23769290 0.99923769 0.76230710 B-3 0.00000000 0.76230668 999.23769332 0.99923769 0.76230668 B-4 0.00000000 0.76230592 999.23769408 0.99923769 0.76230592 B-5 0.00000000 0.76230769 999.23769231 0.99923769 0.76230769 B-6 0.48508645 0.76230287 999.23769713 0.99923770 0.27721641 (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 593,468.05 0.00000% 593,468.05 0.00 0.00 0.00 A-1 62,949,000.00 6.75000% 62,949,000.00 354,088.13 0.00 0.00 A-2 219,700,000.00 6.75000% 219,700,000.00 1,235,812.50 0.00 0.00 A-3 13,588,000.00 6.75000% 13,588,000.00 76,432.50 0.00 0.00 A-4 41,060,000.00 6.75000% 41,060,000.00 230,962.50 0.00 0.00 A-5 6,110,000.00 6.75000% 6,110,000.00 34,368.75 0.00 0.00 A-6 9,154,300.00 6.75000% 9,154,300.00 51,492.94 0.00 0.00 A-7 15,312,500.00 6.10000% 15,312,500.00 77,838.54 0.00 0.00 A-8 25,028,302.00 5.85000% 25,028,302.00 122,012.97 0.00 0.00 A-9 18,559,198.00 4.30000% 18,559,198.00 66,503.79 0.00 0.00 A-10 0.00 4.20000% 18,559,198.00 64,957.19 0.00 0.00 A-11 25,100,000.00 6.75000% 25,100,000.00 141,187.50 0.00 0.00 A-12 5,731,000.00 6.75000% 5,731,000.00 32,236.88 0.00 0.00 A-13 142,504,000.00 6.75000% 142,504,000.00 801,585.00 0.00 0.00 A-14 20,404,700.00 6.75000% 20,404,700.00 114,776.44 0.00 0.00 A-15 15,100,000.00 6.75000% 15,100,000.00 84,937.50 0.00 0.00 A-16 9,190,000.00 6.75000% 9,190,000.00 51,693.75 0.00 0.00 A-R 50.00 6.75000% 50.00 0.28 0.00 0.00 A-LR 50.00 6.75000% 50.00 0.28 0.00 0.00 B-1 10,404,000.00 6.75000% 10,404,000.00 58,522.50 0.00 0.00 B-2 3,901,000.00 6.75000% 3,901,000.00 21,943.13 0.00 0.00 B-3 2,276,000.00 6.75000% 2,276,000.00 12,802.50 0.00 0.00 B-4 1,301,000.00 6.75000% 1,301,000.00 7,318.13 0.00 0.00 B-5 975,000.00 6.75000% 975,000.00 5,484.38 0.00 0.00 B-6 1,301,005.21 6.75000% 1,301,005.21 7,318.15 0.00 0.00 Totals 650,242,573.26 3,654,276.23 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 0.00 592,886.50 A-1 0.00 0.00 354,088.13 0.00 62,949,000.00 A-2 0.00 0.00 1,235,812.50 0.00 214,442,414.95 A-3 0.00 0.00 76,432.50 0.00 13,588,000.00 A-4 0.00 0.00 230,962.50 0.00 41,060,000.00 A-5 0.00 0.00 34,368.75 0.00 6,144,368.75 A-6 0.00 0.00 51,492.94 0.00 9,119,931.25 A-7 0.00 0.00 77,838.54 0.00 14,897,516.54 A-8 0.00 0.00 122,012.97 0.00 24,473,320.34 A-9 0.00 0.00 66,503.79 0.00 18,119,642.15 A-10 0.00 0.00 64,957.19 0.00 18,119,642.15 A-11 0.00 0.00 141,187.50 0.00 24,603,058.79 A-12 0.00 0.00 32,236.88 0.00 5,763,236.88 A-13 0.00 0.00 801,585.00 0.00 139,278,659.51 A-14 0.00 0.00 114,776.44 0.00 20,404,700.00 A-15 0.00 0.00 84,937.50 0.00 14,619,095.54 A-16 0.00 0.00 51,693.75 0.00 9,190,000.00 A-R 0.00 0.00 0.28 0.00 0.00 A-LR 0.00 0.00 0.28 0.00 0.00 B-1 0.00 0.00 58,522.50 0.00 10,396,068.96 B-2 0.00 0.00 21,943.13 0.00 3,898,026.24 B-3 0.00 0.00 12,802.50 0.00 2,274,264.99 B-4 0.00 0.00 7,318.13 0.00 1,300,008.24 B-5 0.00 0.00 5,484.38 0.00 974,256.75 B-6 0.00 0.00 7,318.15 0.00 1,300,013.45 Totals 0.00 0.00 3,654,276.23 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 593,468.05 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 A-1 62,949,000.00 6.75000% 1000.00000000 5.62500008 0.00000000 0.00000000 A-2 219,700,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-3 13,588,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-4 41,060,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-5 6,110,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-6 9,154,300.00 6.75000% 1000.00000000 5.62500027 0.00000000 0.00000000 A-7 15,312,500.00 6.10000% 1000.00000000 5.08333322 0.00000000 0.00000000 A-8 25,028,302.00 5.85000% 1000.00000000 4.87499991 0.00000000 0.00000000 A-9 18,559,198.00 4.30000% 1000.00000000 3.58333318 0.00000000 0.00000000 A-10 0.00 4.20000% 1000.00000000 3.49999984 0.00000000 0.00000000 A-11 25,100,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-12 5,731,000.00 6.75000% 1000.00000000 5.62500087 0.00000000 0.00000000 A-13 142,504,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-14 20,404,700.00 6.75000% 1000.00000000 5.62500012 0.00000000 0.00000000 A-15 15,100,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-16 9,190,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-R 50.00 6.75000% 1000.00000000 5.60000000 0.00000000 0.00000000 A-LR 50.00 6.75000% 1000.00000000 5.60000000 0.00000000 0.00000000 B-1 10,404,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 B-2 3,901,000.00 6.75000% 1000.00000000 5.62500128 0.00000000 0.00000000 B-3 2,276,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 B-4 1,301,000.00 6.75000% 1000.00000000 5.62500384 0.00000000 0.00000000 B-5 975,000.00 6.75000% 1000.00000000 5.62500513 0.00000000 0.00000000 B-6 1,301,005.21 6.75000% 1000.00000000 5.62499669 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 999.02008204 A-1 0.00000000 0.00000000 5.62500008 0.00000000 1000.00000000 A-2 0.00000000 0.00000000 5.62500000 0.00000000 976.06925330 A-3 0.00000000 0.00000000 5.62500000 0.00000000 1000.00000000 A-4 0.00000000 0.00000000 5.62500000 0.00000000 1000.00000000 A-5 0.00000000 0.00000000 5.62500000 0.00000000 1005.62500000 A-6 0.00000000 0.00000000 5.62500027 0.00000000 996.24561681 A-7 0.00000000 0.00000000 5.08333322 0.00000000 972.89903935 A-8 0.00000000 0.00000000 4.87499991 0.00000000 977.82583653 A-9 0.00000000 0.00000000 3.58333318 0.00000000 976.31601053 A-10 0.00000000 0.00000000 3.49999984 0.00000000 976.31601053 A-11 0.00000000 0.00000000 5.62500000 0.00000000 980.20154542 A-12 0.00000000 0.00000000 5.62500087 0.00000000 1005.62500087 A-13 0.00000000 0.00000000 5.62500000 0.00000000 977.36666697 A-14 0.00000000 0.00000000 5.62500012 0.00000000 1000.00000000 A-15 0.00000000 0.00000000 5.62500000 0.00000000 968.15202252 A-16 0.00000000 0.00000000 5.62500000 0.00000000 1000.00000000 A-R 0.00000000 0.00000000 5.60000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 5.60000000 0.00000000 0.00000000 B-1 0.00000000 0.00000000 5.62500000 0.00000000 999.23769319 B-2 0.00000000 0.00000000 5.62500128 0.00000000 999.23769290 B-3 0.00000000 0.00000000 5.62500000 0.00000000 999.23769332 B-4 0.00000000 0.00000000 5.62500384 0.00000000 999.23769408 B-5 0.00000000 0.00000000 5.62500513 0.00000000 999.23769231 B-6 0.00000000 0.00000000 5.62499669 0.00000000 999.23769713 (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 Component Statement Component Beginning Ending Beginning Ending Ending Pass-Through Notional Notional Component Component Component Class Rate Balance Balance Balance Balance Percentage A-8-1 5.85000% 0.00 0.00 20,478,302.00 19,923,320.34 97.28990392% A-8-2 5.85000% 0.00 0.00 4,550,000.00 4,550,000.00 100.00000000% A-9-1 4.30000% 0.00 0.00 16,219,198.00 15,779,642.15 97.28990392% A-9-2 4.30000% 0.00 0.00 2,340,000.00 2,340,000.00 100.00000000%

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 14,245,877.70 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 397,152.00 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 14,643,029.70 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 144,657.36 Payment of Interest and Principal 14,507,748.56 Total Withdrawals (Pool Distribution Amount) 14,652,405.92 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 9,376.20 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

SERVICING FEES Gross Servicing Fee 135,446.96 Master Servicing Fee 9,210.39 Special Servicing Fee 0.00 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 144,657.36

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 3 0 0 0 3 972,707.59 0.00 0.00 0.00 972,707.59 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 3 0 0 0 3 972,707.59 0.00 0.00 0.00 972,707.59 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 0.197368% 0.000000% 0.000000% 0.000000% 0.197368% 0.151766% 0.000000% 0.000000% 0.000000% 0.151766% 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 0.197368% 0.000000% 0.000000% 0.000000% 0.197368% 0.151766% 0.000000% 0.000000% 0.000000% 0.151766%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 764,049.91

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class B-1 9,754,005.21 1.50005638% 9,746,569.67 1.52435806% 1.627448% 0.000000% Class B-2 5,853,005.21 0.90012642% 5,848,543.43 0.91470893% 0.610215% 0.000000% Class B-3 3,577,005.21 0.55010320% 3,574,278.44 0.55901515% 0.356024% 0.000000% Class B-4 2,276,005.21 0.35002402% 2,274,270.20 0.35569459% 0.203509% 0.000000% Class B-5 1,301,005.21 0.20007998% 1,300,013.45 0.20332138% 0.152515% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.203510% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 156,564.22 0.02407782% 156,564.22 0.02448656% Fraud 13,004,851.47 2.00000000% 13,004,851.47 2.03395152% Special Hazard 6,502,425.73 1.00000000% 6,502,425.73 1.01697576% Limit of Subordinate's Exposure to Certain Types of Losses

COLLATERAL STATEMENT Collateral Description Fixed 30 Year Weighted Average Gross Coupon 0.000000% Weighted Average Pass-Through Rate 0.000000% Weighted Average Maturity(Stepdown Calculation ) 356 Beginning Scheduled Collateral Loan Count 1,543 Number Of Loans Paid In Full 23 Ending Scheduled Collateral Loan Count 1,520 Beginning Scheduled Collateral Balance 650,242,573.26 Ending Scheduled Collateral Balance 639,388,469.82 Ending Actual Collateral Balance at 31-Aug-2001 640,927,792.56 Ending Scheduled Balance For Wells Fargo Serviced 583,700,400.98 Ending Scheduled Balance For Other Servicers 55,688,068.84 Monthly P &I Constant 4,300,807.38 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 14,378,942.17 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans 588,642,035.56 Ending scheduled Balance For discounted Loans 50,746,434.26 Scheduled Principal 495,769.69 Unscheduled Principal 10,358,333.75 Unpaid Principal Balance Of Outstanding Mortgage Loans With Original LTV: Less Than Or Equal To 80% 609,109,593.97 Greater Than 80%, less than or equal to 85% 6,222,804.85 Greater than 85%, less than or equal to 95% 24,135,214.89 Greater than 95% 0.00

Filing Compare · WELLS FARGO ASSET SEC CORP MOR PASS THR CERT SER 2001-18