8-K 1 mst01001.txt DECEMBER 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): December 26, 2001 MASTR ASSET SECURITIZATION TRUST Mortgage Pass-Through Certificates, Series 2001-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-79283-04 Pooling and Servicing Agreement) (Commission 52-2316425 (State or other File Number) 52-2316426 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank Minnesota, N.A., 11000 Broken Land Parkway Columbia, MD 21043 (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, 2001 a distribution was made to holders of MASTR ASSET SECURITIZATION TRUST, Mortgage Pass-Through Certificates, Series 2001-1 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 2001-1 Trust, relating to the December 26, 2001 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. MASTR ASSET SECURITIZATION TRUST Mortgage Pass-Through Certificates, Series 2001-1 Trust By: Wells Fargo Bank Minnesota, N.A. as Trustee By: /s/ Beth Belfield, Officer By: Beth Belfield, Officer Date: 1/8/02 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2001-1 Trust, relating to the December 26, 2001 distribution. EX-99.1

Mortgage Asset Securitization Transactions, Inc Mortgage Pass-Through Certificates Record Date: 1011/3130/01 Distribution Date: 1112/26/01 MASTR Series: 2001-1 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-1 55265KAA7 SEN 6.75000% 5756,~~290~~641,~~230~~988.4820 ~~322~~318,~~257~~611.5517 ~~648~~1,~~242~~244,049.2884 A-2 55265KAB5 SEN 6.75000% 4,153,000.00 23,360.6362 0.00 A-3 55265KAC3 SEN 32.~~07000~~75000% 39,~~693~~244,~~229~~098.5131 ~~101~~89,~~548~~934.5139 ~~449~~861,~~131~~933.1927 A-4 55265KAD1 SEN 45.~~93000~~25000% 0.00 ~~163~~171,~~073~~692.0292 0.00 A-5 55265KAE9 SEN 6.75000% 43,200,000.00 ~~243~~242,~~000~~999.0099 0.00 A-6 55265KAF6 SEN 6.00000% 6665,~~155~~407,~~713~~157.2956 ~~330~~327,~~778~~035.5777 ~~748~~1,~~555~~436,562.7363 A-7 55265KAG4 SEN 6.75000% 10,000,000.00 56,250.00 0.00 A-8 55265KAH2 SEN 6.75000% 9,~~094~~146,~~872~~031.5016 51,~~158~~446.6642 (51,~~158~~446.6642) PO 55265KAJ8 SEN 0.00000% ~~661~~660,~~842~~743.4213 0.00 ~~1,099~~763.2976 A-R 55265KAK5 SEN 6.75000% 0.00 0.2120 0.00 A-LR 55265KAQ2 SEN 6.75000% 0.00 0.00 0.00 A-X 55265KAL3 SEN 0.~~34610~~34347% 0.00 6261,~~080~~100.2785 0.00 B-1 55265KAM1 SUB 6.75000% 3,~~834~~831,~~941~~848.1557 21,~~571~~554.5415 3,~~092~~087.5810 B-2 55265KAN9 SUB 6.75000% 1,~~677~~676,~~661~~308.8595 9,~~436~~429.8524 1,~~352~~350.9050 B-3 55265KAP4 SUB 6.75000% 1,~~198~~197,~~044~~078.4128 6,~~739~~733.0056 ~~966~~964.1342 B-4 55265KAR0 SUB 6.75000% ~~718~~717,~~426~~847.9661 4,~~041~~037.1589 ~~579~~578.3633 B-5 55265KAS8 SUB 6.75000% 479,~~617~~230.4467 2,~~697~~695.8567 386.7709 B-6 55265KAT6 SUB 6.75000% 479,~~981~~594.3327 2,~~699~~697.9072 ~~387~~386.0738 Totals ~~238~~236,~~637~~834,~~561~~926.3471 1,~~400~~389,~~693~~580.7156 13,~~802~~498,~~634~~615.6490

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 5655,~~641~~397,~~988~~938.2036 ~~970~~1,~~499~~562,661.8301 0.00 A-2 0.00 4,153,000.00 23,360.6362 0.00 A-3 0.00 3938,~~244~~382,~~098~~165.3104 ~~550~~951,~~679~~867.7066 0.00 A-4 0.00 0.00 ~~163~~171,~~073~~692.0292 0.00 A-5 0.00 43,200,000.00 ~~243~~242,~~000~~999.0099 0.00 A-6 0.00 6563,~~407~~970,~~157~~594.5692 1,~~079~~763,~~334~~598.3040 0.00 A-7 0.00 10,000,000.00 56,250.00 0.00 A-8 0.00 9,~~146~~197,~~031~~477.1658 0.00 0.00 PO 0.00 ~~660~~659,~~743~~979.1337 ~~1,099~~763.2976 0.00 A-R 0.00 0.00 0.2120 0.00 A-LR 0.00 0.00 0.00 0.00 A-X 0.00 0.00 6261,~~080~~100.2785 0.00 B-1 0.00 3,~~831~~828,~~848~~761.5747 24,~~664~~641.1225 0.00 B-2 0.00 1,~~676~~674,~~308~~958.9545 10,~~789~~779.7574 0.00 B-3 0.00 1,~~197~~196,~~078~~113.2886 7,~~705~~697.1398 0.00 B-4 0.00 717,~~847~~269.6128 4,~~620~~616.5122 0.00 B-5 0.00 ~~479~~478,~~230~~844.6758 3,~~084~~081.6276 0.00 B-6 0.00 479,~~594~~207.2789 3,~~086~~084.9710 0.00 Totals 0.00 ~~236~~233,~~834~~336,~~926~~310.7180 34,~~203~~888,~~328~~196.3546 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 57,733,000.00 5756,~~290~~641,~~230~~988.4820 6665,~~871~~396.1278 ~~581~~1,~~371~~178,653.1506 0.00 0.00 A-2 4,153,000.00 4,153,000.00 0.00 0.00 0.00 0.00 A-3 40,000,000.00 39,~~693~~244,~~229~~098.5131 4645,~~331~~309.3081 ~~402~~816,~~799~~623.8946 0.00 0.00 A-4 0.00 0.00 0.00 0.00 0.00 0.00 A-5 43,200,000.00 43,200,000.00 0.00 0.00 0.00 0.00 A-6 66,667,000.00 6665,~~155~~407,~~713~~157.2956 7775,~~219~~516.2273 ~~671~~1,~~336~~361,045.5191 0.00 0.00 A-7 10,000,000.00 10,000,000.00 0.00 0.00 0.00 0.00 A-8 9,044,000.00 9,~~094~~146,~~872~~031.5016 0.00 0.00 (51,~~158~~446.6642) 0.00 PO 662,451.00 ~~661~~660,~~842~~743.4213 ~~600~~606.1424 ~~499~~157.1552 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 A-X 0.00 0.00 0.00 0.00 0.00 0.00 B-1 3,838,000.00 3,~~834~~831,~~941~~848.1557 3,~~092~~087.5810 0.00 0.00 0.00 B-2 1,679,000.00 1,~~677~~676,~~661~~308.8595 1,~~352~~350.9050 0.00 0.00 0.00 B-3 1,199,000.00 1,~~198~~197,~~044~~078.4128 ~~966~~964.1342 0.00 0.00 0.00 B-4 719,000.00 ~~718~~717,~~426~~847.9661 ~~579~~578.3633 0.00 0.00 0.00 B-5 480,000.00 479,~~617~~230.4467 386.7709 0.00 0.00 0.00 B-6 480,364.23 479,~~981~~594.3327 ~~387~~386.0738 0.00 0.00 0.00 Totals 239,854,915.23 ~~238~~236,~~637~~834,~~561~~926.3471 ~~197~~193,~~786~~582.5938 13,~~656~~356,~~006~~479.7095 (51,~~158~~446.6642) 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 ~~648~~1,~~242~~244,049.2884 5655,~~641~~397,~~988~~938.2036 0.~~98110246~~95955413 ~~648~~1,~~242~~244,049.2884 A-2 0.00 4,153,000.00 1.00000000 0.00 A-3 ~~449~~861,~~131~~933.1927 3938,~~244~~382,~~098~~165.3104 0.~~98110246~~95955413 ~~449~~861,~~131~~933.1927 A-4 0.00 0.00 0.00000000 0.00 A-5 0.00 43,200,000.00 1.00000000 0.00 A-6 ~~748~~1,~~555~~436,562.7363 6563,~~407~~970,~~157~~594.5692 0.~~98110246~~95955413 ~~748~~1,~~555~~436,562.7363 A-7 0.00 10,000,000.00 1.00000000 0.00 A-8 (51,~~158~~446.6642) 9,~~146~~197,~~031~~477.1658 1.~~01128164~~01697010 (51,~~158~~446.6642) PO ~~1,099~~763.2976 ~~660~~659,~~743~~979.1337 0.~~99742189~~99626896 ~~1,099~~763.2976 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 A-X 0.00 0.00 0.00000000 0.00 B-1 3,~~092~~087.5810 3,~~831~~828,~~848~~761.5747 0.~~99839723~~99759288 3,~~092~~087.5810 B-2 1,~~352~~350.9050 1,~~676~~674,~~308~~958.9545 0.~~99839723~~99759288 1,~~352~~350.9050 B-3 ~~966~~964.1342 1,~~197~~196,~~078~~113.2886 0.~~99839723~~99759288 ~~966~~964.1342 B-4 ~~579~~578.3633 717,~~847~~269.6128 0.~~99839723~~99759288 ~~579~~578.3633 B-5 386.7709 ~~479~~478,~~230~~844.6758 0.~~99839723~~99759287 386.7709 B-6 ~~387~~386.0738 479,~~594~~207.2789 0.~~99839713~~99759278 ~~387~~386.0738 Totals 13,~~802~~498,~~634~~615.6490 ~~236~~233,~~834~~336,~~926~~310.7180 0.~~98740910~~97282272 13,~~802~~498,~~634~~615.6490

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 57,733,000.00 ~~992~~981.~~33073771~~10245787 1.~~15828244~~13274522 1020.~~06999723~~41558658 0.00000000 A-2 4,153,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3 40,000,000.00 ~~992~~981.~~33073775~~10245775 1.~~15828250~~13274525 1020.~~06999725~~41558650 0.00000000 A-4 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-5 43,200,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-6 66,667,000.00 ~~992~~981.~~33073770~~10245789 1.~~15828251~~13274529 1020.~~06999730~~41558657 0.00000000 A-7 10,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-8 9,044,000.00 ~~1005~~1011.~~62500000~~28164087 0.00000000 0.00000000 (5.~~65664087~~68845865) PO 662,451.00 ~~999~~997.~~08132073~~42189234 0.~~90593870~~91514693 0.~~75348969~~23778362 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 A-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 3,838,000.00 ~~999~~998.~~20300938~~39723033 0.~~80577905~~80435122 0.00000000 0.00000000 B-2 1,679,000.00 ~~999~~998.~~20300774~~39723049 0.~~80577725~~80434783 0.00000000 0.00000000 B-3 1,199,000.00 ~~999~~998.~~20301084~~39723103 0.~~80577982~~80435363 0.00000000 0.00000000 B-4 719,000.00 ~~999~~998.~~20300417~~39723227 0.~~80578581~~80435327 0.00000000 0.00000000 B-5 480,000.00 ~~999~~998.~~20300000~~39722917 0.~~80577083~~80435417 0.00000000 0.00000000 B-6 480,364.23 ~~999~~998.~~20289652~~39713294 0.~~80578439~~80434798 0.00000000 0.00000000

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 1121.~~22827984~~54833180 ~~981~~959.~~10245787~~55412606 0.~~98110246~~95955413 1121.~~22827984~~54833180 A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-3 0.00000000 1121.~~22827975~~54833175 ~~981~~959.~~10245775~~55412600 0.~~98110246~~95955413 1121.~~22827975~~54833175 A-4 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-6 0.00000000 1121.~~22827981~~54833171 ~~981~~959.~~10245789~~55412603 0.~~98110246~~95955413 1121.~~22827981~~54833171 A-7 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-8 0.00000000 (5.~~65664087~~68845865) 1,~~011~~016.~~28164087~~97009951 1.~~01128164~~01697010 (5.~~65664087~~68845865) PO 0.00000000 1.~~65942840~~15293056 ~~997~~996.~~42189234~~26896178 0.~~99742189~~99626896 1.~~65942840~~15293056 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 0.~~80577905~~80435122 ~~998~~997.~~39723033~~59287910 0.~~99839723~~99759288 0.~~80577905~~80435122 B-2 0.00000000 0.~~80577725~~80434783 ~~998~~997.~~39723049~~59288267 0.~~99839723~~99759288 0.~~80577725~~80434783 B-3 0.00000000 0.~~80577982~~80435363 ~~998~~997.~~39723103~~59287740 0.~~99839723~~99759288 0.~~80577982~~80435363 B-4 0.00000000 0.~~80578581~~80435327 ~~998~~997.~~39723227~~59287900 0.~~99839723~~99759288 0.~~80578581~~80435327 B-5 0.00000000 0.~~80577083~~80435417 ~~998~~997.~~39722917~~59287500 0.~~99839723~~99759287 0.~~80577083~~80435417 B-6 0.00000000 0.~~80578439~~80434798 ~~998~~997.~~39713294~~59278496 0.~~99839713~~99759278 0.~~80578439~~80434798 (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-1 57,733,000.00 6.75000% 5756,~~290~~641,~~230~~988.4820 ~~322~~318,~~257~~611.5518 0.00 0.00 A-2 4,153,000.00 6.75000% 4,153,000.00 23,360.63 0.00 0.00 A-3 40,000,000.00 32.~~07000~~75000% 39,~~693~~244,~~229~~098.5131 ~~101~~89,~~548~~934.5139 0.00 0.00 A-4 0.00 45.~~93000~~25000% 39,~~693~~244,~~229~~098.5131 ~~163~~171,~~073~~692.0293 0.00 0.00 A-5 43,200,000.00 6.75000% 43,200,000.00 243,000.00 0.00 0.00 A-6 66,667,000.00 6.00000% 6665,~~155~~407,~~713~~157.2956 ~~330~~327,~~778~~035.5779 0.00 0.00 A-7 10,000,000.00 6.75000% 10,000,000.00 56,250.00 0.00 0.00 A-8 9,044,000.00 6.75000% 9,~~094~~146,~~872~~031.5016 51,~~158~~446.6643 0.00 0.00 PO 662,451.00 0.00000% ~~661~~660,~~842~~743.4213 0.00 0.00 0.00 A-R 50.00 6.75000% 0.00 0.00 0.00 0.00 A-LR 50.00 6.75000% 0.00 0.00 0.00 0.00 A-X 0.00 0.~~34610~~34347% ~~215~~213,~~244~~471,~~593~~143.1208 6261,~~080~~100.2786 0.00 0.00 B-1 3,838,000.00 6.75000% 3,~~834~~831,~~941~~848.1557 21,~~571~~554.5415 0.00 0.00 B-2 1,679,000.00 6.75000% 1,~~677~~676,~~661~~308.8595 9,~~436~~429.8524 0.00 0.00 B-3 1,199,000.00 6.75000% 1,~~198~~197,~~044~~078.4128 6,~~739~~733.0057 0.00 0.00 B-4 719,000.00 6.75000% ~~718~~717,~~426~~847.9661 4,~~041~~037.1589 0.00 0.00 B-5 480,000.00 6.75000% 479,~~617~~230.4467 2,~~697~~695.8567 0.00 0.00 B-6 480,364.23 6.75000% 479,~~981~~594.3327 2,~~699~~697.9072 0.00 0.00 Totals 239,854,915.23 1,~~400~~389,~~693~~580.5045 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 0.0002 0.00 ~~322~~318,~~257~~611.5517 0.00 5655,~~641~~397,~~988~~938.2036 A-2 0.00 0.00 23,360.6362 0.00 4,153,000.00 A-3 0.0001 0.00 ~~101~~89,~~548~~934.5139 0.00 3938,~~244~~382,~~098~~165.3104 A-4 0.0001 0.00 ~~163~~171,~~073~~692.0292 0.00 3938,~~244~~382,~~098~~165.3104 A-5 0.0001 0.00 ~~243~~242,~~000~~999.0099 0.00 43,200,000.00 A-6 0.0002 0.00 ~~330~~327,~~778~~035.5777 0.00 6563,~~407~~970,~~157~~594.5692 A-7 0.00 0.00 56,250.00 0.00 10,000,000.00 A-8 0.00 0.00 51,~~158~~446.6642 0.00 9,~~146~~197,~~031~~477.1658 PO 0.00 0.00 0.00 0.00 ~~660~~659,~~743~~979.1337 A-R 0.00 0.00 0.2120 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 A-X 0.00 0.00 6261,~~080~~100.2785 0.00 ~~213~~209,~~471~~998,~~143~~723.0887 B-1 0.00 0.00 21,~~571~~554.5415 0.00 3,~~831~~828,~~848~~761.5747 B-2 0.00 0.00 9,~~436~~429.8524 0.00 1,~~676~~674,~~308~~958.9545 B-3 0.00 0.00 6,~~739~~733.0056 0.00 1,~~197~~196,~~078~~113.2886 B-4 0.00 0.00 4,~~041~~037.1589 0.00 717,~~847~~269.6128 B-5 0.00 0.00 2,~~697~~695.8567 0.00 ~~479~~478,~~230~~844.6758 B-6 0.00 0.00 2,~~699~~697.9072 0.00 479,~~594~~207.2789 Totals 0.0007 0.00 1,~~400~~389,~~693~~580.7156 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-1 57,733,000.00 6.75000% ~~992~~981.~~33073771~~10245787 5.~~58186046~~51870126 0.00000000 0.00000000 A-2 4,153,000.00 6.75000% 1000.00000000 5.62500120 0.00000000 0.00000000 A-3 40,000,000.00 32.~~07000~~75000% ~~992~~981.~~33073775~~10245775 2.~~53871275~~24835975 0.00000000 0.00000000 A-4 0.00 45.~~93000~~25000% ~~992~~981.~~33073775~~10245775 4.~~07682550~~29232325 0.00000000 0.00000000 A-5 43,200,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-6 66,667,000.00 6.00000% ~~992~~981.~~33073770~~10245789 4.~~96165374~~90551232 0.00000000 0.00000000 A-7 10,000,000.00 6.75000% 1000.00000000 5.62500000 0.00000000 0.00000000 A-8 9,044,000.00 6.75000% ~~1005~~1011.~~62500000~~28164087 5.~~65664087~~68845975 0.00000000 0.00000000 PO 662,451.00 0.00000% ~~999~~997.~~08132073~~42189234 0.00000000 0.00000000 0.00000000 A-R 50.00 6.75000% 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 50.00 6.75000% 0.00000000 0.00000000 0.00000000 0.00000000 A-X 0.00 0.~~34610~~34347% ~~994~~986.~~47409704~~28039469 0.~~28682356~~28229849 0.00000000 0.00000000 B-1 3,838,000.00 6.75000% ~~999~~998.~~20300938~~39723033 5.~~62051589~~61598489 0.00000000 0.00000000 B-2 1,679,000.00 6.75000% ~~999~~998.~~20300774~~39723049 5.~~62051817~~61598571 0.00000000 0.00000000 B-3 1,199,000.00 6.75000% ~~999~~998.~~20301084~~39723103 5.~~62051710~~61598832 0.00000000 0.00000000 B-4 719,000.00 6.75000% ~~999~~998.~~20300417~~39723227 5.~~62051460~~61598053 0.00000000 0.00000000 B-5 480,000.00 6.75000% ~~999~~998.~~20300000~~39722917 5.~~62052083~~61597917 0.00000000 0.00000000 B-6 480,364.23 6.75000% ~~999~~998.~~20289652~~39713294 5.~~62052674~~61598852 0.00000000 0.00000000 (5) Per $1 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.~~00000000~~00000035 0.00000000 5.~~58186046~~51870109 0.00000000 ~~981~~959.~~10245787~~55412606 A-2 0.00000000 0.00000000 5.~~62500120~~62499880 0.00000000 1000.00000000 A-3 0.~~00000000~~00000025 0.00000000 2.~~53871275~~24835975 0.00000000 ~~981~~959.~~10245775~~55412600 A-4 0.~~00000000~~00000025 0.00000000 4.~~07682550~~29232300 0.00000000 ~~981~~959.~~10245775~~55412600 A-5 0.~~00000000~~00000023 0.00000000 5.~~62500000~~62499977 0.00000000 1000.00000000 A-6 0.~~00000000~~00000030 0.00000000 4.~~96165374~~90551202 0.00000000 ~~981~~959.~~10245789~~55412603 A-7 0.00000000 0.00000000 5.62500000 0.00000000 1000.00000000 A-8 0.00000000 0.00000000 5.~~65664087~~68845865 0.00000000 ~~1011~~1016.~~28164087~~97009951 PO 0.00000000 0.00000000 0.00000000 0.00000000 ~~997~~996.~~42189234~~26896178 A-R 0.00000000 0.00000000 4.~~20000000~~00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-X 0.00000000 0.00000000 0.~~28682356~~28229844 0.00000000 ~~986~~970.~~28039469~~23710688 B-1 0.00000000 0.00000000 5.~~62051589~~61598489 0.00000000 ~~998~~997.~~39723033~~59287910 B-2 0.00000000 0.00000000 5.~~62051817~~61598571 0.00000000 ~~998~~997.~~39723049~~59288267 B-3 0.00000000 0.00000000 5.~~62051710~~61597998 0.00000000 ~~998~~997.~~39723103~~59287740 B-4 0.00000000 0.00000000 5.~~62051460~~61598053 0.00000000 ~~998~~997.~~39723227~~59287900 B-5 0.00000000 0.00000000 5.~~62052083~~61597917 0.00000000 ~~998~~997.~~39722917~~59287500 B-6 0.00000000 0.00000000 5.~~62052674~~61598852 0.00000000 ~~998~~997.~~39713294~~59278496 (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 0.00 Deposits Payments of Interest and Principal 34,~~225~~920,~~183~~595.8363 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 2817,~~455~~535.4586 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 34,~~253~~938,~~639~~131.2849 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 5049,~~310~~935.9303 Payment of Interest and Principal 34,~~203~~888,~~328~~196.3546 Total Withdrawals (Pool Distribution Amount) 34,~~253~~938,~~639~~131.2849 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee 5049,~~310~~935.9303 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 5049,~~310~~935.9303

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 96 0 0 0 96 42,~~192~~579,~~438~~405.7354 0.00 0.00 0.00 42,~~192~~579,~~438~~405.7354 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 96 0 0 0 96 42,~~192~~579,~~438~~405.7354 0.00 0.00 0.00 42,~~192~~579,~~438~~405.7354 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 1.~~495017~~010101% 0.000000% 0.000000% 0.000000% 1.~~495017~~010101% 1.~~769062~~104747% 0.000000% 0.000000% 0.000000% 1.~~769062~~104747% 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 1.~~495017~~010101% 0.000000% 0.000000% 0.000000% 1.~~495017~~010101% 1.~~769062~~104747% 0.000000% 0.000000% 0.000000% 1.~~769062~~104747%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 2817,~~455~~535.4586

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 9,057,815.23 3.77637257% 9,~~042~~035,~~651~~134.4890 3.~~81812413~~87215126% 96.~~450963~~400512% 100.000000% Class B-1 4,557,364.23 1.90005038% 4,~~550~~546,~~059~~394.7806 1.~~92119458~~94842973% 1.~~622467~~645531% 0.000000% Class B-2 2,878,364.23 1.20004388% 2,~~873~~871,~~750~~435.8361 1.~~21339824~~23059956% 0.~~709777~~719866% 0.000000% Class B-3 1,679,364.23 0.70015836% 1,~~676~~675,~~672~~321.5575 0.~~70794987~~71798587% 0.~~506862~~514068% 0.000000% Class B-4 960,364.23 0.40039381% 958,~~824~~052.9447 0.~~40484947~~41058868% 0.~~303948~~308269% 0.000000% Class B-5 480,364.23 0.20027283% 479,~~594~~207.2789 0.~~20250150~~20537219% 0.~~202914~~205799% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~203068~~205955% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 100,000.00 0.04169187% 100,000.00 0.~~04222350~~04285660% Fraud 2,398,549.15 1.00000000% 2,398,549.15 1.~~01275145~~02793652% Special Hazard 2,399,675.00 1.00046939% 2,399,675.00 1.~~01322682~~02841902% Limit of Subordinate's Exposure to Certain Types of Losses

COLLATERAL STATEMENT Collateral Description Mixed Fixed Weighted Average Gross Coupon 7.~~296444~~293767% Weighted Average Pass-Through Rate 7.~~043453~~040755% Weighted Average Maturity(Stepdown Calculation ) ~~355~~354 Beginning Scheduled Collateral Loan Count ~~606~~602 Number Of Loans Paid In Full 48 Ending Scheduled Collateral Loan Count ~~602~~594 Beginning Scheduled Collateral Balance ~~238~~236,~~637~~834,~~561~~926.3570 Ending Scheduled Collateral Balance ~~236~~233,~~834~~336,~~926~~310.7081 Ending Actual Collateral Balance at 3130-~~Oct~~Nov-2001 ~~236~~233,~~986~~483,~~581~~720.1100 Monthly P &I Constant 1,~~643~~630,~~513~~393.8554 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 24,~~923~~600,~~124~~737.4575 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~236~~233,~~834~~336,~~926~~310.7081 Scheduled Principal ~~192~~190,~~509~~877.1995 Unscheduled Principal 13,~~610~~307,~~125~~737.4694

Senior Prepayment Percentage 100.000000% Senior Percentage 96.~~474988~~450963% Junior Percentage 3.~~525012~~5490367%

Filing Compare · MASTER ASSET SECURITIZATION TRUST 2001 1