8-K 1 mal02001.txt OCTOBER 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): October 25, 2002 MASTR ALTERNATIVE LOAN TRUST Mortgage Pass-Through Certificates, Series 2002-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-75724-09 51-0423827 Pooling and Servicing Agreement) (Commission 51-0423832 (State or other File Number) IRS EIN jurisdiction of Incorporation) c/o Wells Fargo Bank Minnesota, N.A., 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) ITEM 5. Other Events On October 25, 2002 a distribution was made to holders of MASTR ALTERNATIVE LOAN TRUST, Mortgage Pass-Through Certificates, Series 2002-1 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 2002-1 Trust, relating to the October 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. MASTR ALTERNATIVE LOAN TRUST Mortgage Pass-Through Certificates, Series 2002-1 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: 11/8/02 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2002-1 Trust, relating to the October 25, 2002 distribution. EX-99.1

MASTR Alternative Loan Trust Mortgage Pass-Through Certificates Record Date: 89/3130/02 Distribution Date: 910/25/02 MAL Series: 2002-1 Contact: Customer Service - CTSLink Wells Fargo Bank Minnesota, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) 815-6600 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution A-1 576434AA2 SEQ 2.~~41000~~41375% 26,~~491~~366,~~719~~834.9446 53,~~204~~035.2079 ~~124~~627,~~885~~763.4879 A-2 576434AB0 IO 6.~~59000~~58625% 0.00 ~~145~~144,~~483~~715.7047 0.00 A-3 576434AC8 SEQ 6.50000% ~~201~~200,~~948~~824,~~479~~510.4612 1,~~093~~087,~~887~~799.6043 15,~~123~~649,~~969~~874.3413 A-4 576434AD6 SEQ 6.50000% 10,827,000.00 58,646.25 0.00 A-5 576434AE4 SEQ 6.50000% 25,650,000.00 138,937.50 0.00 APO 576434AF1 PO 0.00000% ~~760~~759,~~582~~827.1752 0.00 ~~754~~15,363.6506 A-R 576434AG9 SEQ 6.75000% 0.00 0.00 0.00 A-LR 576434AM6 SEQ 6.75000% 0.00 0.00 0.00 AX 576434AH7 IO 6.75000% 0.00 9493,~~035~~431.7522 0.00 B-1 576434AJ3 SUB 6.75000% 8,~~556~~549,~~310~~567.3371 48,~~129~~091.2532 6,~~742~~796.6147 B-2 576434AK0 SUB 6.75000% 2,~~994~~992,~~658~~298.6578 16,~~844~~831.9568 2,~~359~~378.8873 B-3 576434AL8 SUB 6.75000% 1,~~996~~994,~~439~~865.1085 11,~~229~~221.9712 1,~~573~~585.2582 B-4 576434AN4 SUB 6.75000% ~~998~~997,~~219~~432.5593 5,~~614~~610.9856 ~~786~~792.6391 B-5 576434AP9 SUB 6.75000% ~~855~~854,~~331~~657.2724 4,~~811~~807.2445 ~~674~~679.0341 B-6 576434AQ7 SUB 6.75000% ~~998~~997,~~732~~945.4643 5,~~617~~613.8744 ~~787~~793.0332 Totals ~~282~~280,~~077~~814,~~472~~940.9304 1,~~676~~668,~~443~~741.2623 16,~~262~~306,~~532~~027.9064

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 2625,~~366~~739,~~834~~070.4667 ~~178~~680,~~089~~799.6858 0.00 A-2 0.00 0.00 ~~145~~144,~~483~~715.7047 0.00 A-3 0.00 ~~200~~195,~~824~~174,~~510~~635.1299 26,~~217~~737,~~856~~673.9456 0.00 A-4 0.00 10,827,000.00 58,646.25 0.00 A-5 0.00 25,650,000.00 138,937.50 0.00 APO 0.00 ~~759~~744,~~827~~464.5246 ~~754~~15,363.6506 0.00 A-R 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 AX 0.00 0.00 9493,~~035~~431.7522 0.00 B-1 0.00 8,~~549~~542,~~567~~771.7124 54,~~871~~887.8679 0.00 B-2 0.00 2,~~992~~989,~~298~~920.7805 19,~~204~~210.8341 0.00 B-3 0.00 1,~~994~~993,~~865~~280.8503 12,~~803~~806.2294 0.00 B-4 0.00 ~~997~~996,~~432~~640.9302 6,~~401~~403.6147 0.00 B-5 0.00 ~~854~~853,~~657~~977.2483 5,~~485~~486.2786 0.00 B-6 0.00 997,~~945~~152.4311 6,~~404~~406.9076 0.00 Totals 0.00 ~~280~~274,~~814~~508,~~940~~912.0440 27,~~938~~974,~~976~~768.1687 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 26,826,100.00 26,~~491~~366,~~719~~834.9446 20,~~876~~960.2230 ~~104~~606,~~009~~803.2649 0.00 0.00 A-2 0.00 0.00 0.00 0.00 0.00 0.00 A-3 204,957,900.00 ~~201~~200,~~948~~824,~~479~~510.4612 ~~187~~188,~~886~~642.0269 ~~936~~5,~~083~~461,231.3344 0.00 0.00 A-4 10,827,000.00 10,827,000.00 0.00 0.00 0.00 0.00 A-5 25,650,000.00 25,650,000.00 0.00 0.00 0.00 0.00 APO 761,319.09 ~~760~~759,~~582~~827.1752 ~~670~~675.8813 8314,687.7793 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 AX 0.00 0.00 0.00 0.00 0.00 0.00 B-1 8,563,000.00 8,~~556~~549,~~310~~567.3371 6,~~742~~796.6147 0.00 0.00 0.00 B-2 2,997,000.00 2,~~994~~992,~~658~~298.6578 2,~~359~~378.8873 0.00 0.00 0.00 B-3 1,998,000.00 1,~~996~~994,~~439~~865.1085 1,~~573~~585.2582 0.00 0.00 0.00 B-4 999,000.00 ~~998~~997,~~219~~432.5593 ~~786~~792.6391 0.00 0.00 0.00 B-5 856,000.00 ~~855~~854,~~331~~657.2724 ~~674~~679.0341 0.00 0.00 0.00 B-6 999,513.31 ~~998~~997,~~732~~945.4643 ~~787~~793.0332 0.00 0.00 0.00 Totals 285,434,932.40 ~~282~~280,~~077~~814,~~472~~940.9304 ~~222~~223,~~356~~304.5578 16,~~040~~082,~~176~~722.3686 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution A-1 ~~124~~627,~~885~~763.4879 2625,~~366~~739,~~834~~070.4667 0.~~98287990~~95947867 ~~124~~627,~~885~~763.4879 A-2 0.00 0.00 0.00000000 0.00 A-3 15,~~123~~649,~~969~~874.3413 ~~200~~195,~~824~~174,~~510~~635.1299 0.~~97983298~~95226696 15,~~123~~649,~~969~~874.3413 A-4 0.00 10,827,000.00 1.00000000 0.00 A-5 0.00 25,650,000.00 1.00000000 0.00 APO ~~754~~15,363.6506 ~~759~~744,~~827~~464.5246 0.~~99804081~~97786128 ~~754~~15,363.6506 A-R 0.00 0.00 0.00000000 0.00 A-LR 0.00 0.00 0.00000000 0.00 AX 0.00 0.00 0.00000000 0.00 B-1 6,~~742~~796.6147 8,~~549~~542,~~567~~771.7124 0.~~99843136~~99763766 6,~~742~~796.6147 B-2 2,~~359~~378.8873 2,~~992~~989,~~298~~920.7805 0.~~99843136~~99763765 2,~~359~~378.8873 B-3 1,~~573~~585.2582 1,~~994~~993,~~865~~280.8503 0.~~99843136~~99763765 1,~~573~~585.2582 B-4 ~~786~~792.6391 ~~997~~996,~~432~~640.9302 0.~~99843136~~99763766 ~~786~~792.6391 B-5 ~~674~~679.0341 ~~854~~853,~~657~~977.2483 0.~~99843136~~99763765 ~~674~~679.0341 B-6 ~~787~~793.0332 997,~~945~~152.4311 0.~~99843136~~99763765 ~~787~~793.0332 Totals 16,~~262~~306,~~532~~027.9064 ~~280~~274,~~814~~508,~~940~~912.0440 0.~~98381420~~96172150 16,~~262~~306,~~532~~027.9064

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 26,826,100.00 ~~987~~982.~~53527125~~87989905 0.~~77820555~~78133981 322.~~87716664~~61989219 0.00000000 A-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-3 204,957,900.00 ~~985~~979.~~31688439~~83298092 0.~~91670543~~92039726 426.~~56719809~~64562547 0.00000000 A-4 10,827,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5 25,650,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 APO 761,319.09 ~~999~~998.~~03204844~~04080836 0.~~88120738~~88678980 019.~~11003271~~29273834 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 AX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 8,563,000.00 ~~999~~998.~~21877029~~43135700 0.~~78741212~~79370197 0.00000000 0.00000000 B-2 2,997,000.00 ~~999~~998.~~21876877~~43135802 0.~~78741408~~79370370 0.00000000 0.00000000 B-3 1,998,000.00 ~~999~~998.~~21876877~~43135636 0.~~78741241~~79370370 0.00000000 0.00000000 B-4 999,000.00 ~~999~~998.~~21876877~~43136136 0.~~78741742~~79370370 0.00000000 0.00000000 B-5 856,000.00 ~~999~~998.~~21877336~~43135514 0.~~78741822~~79370327 0.00000000 0.00000000 B-6 999,513.31 ~~999~~998.~~21876978~~43135656 0.~~78741323~~79370629 0.00000000 0.00000000 (2) All classes are per $1,000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution A-1 0.00000000 423.~~65537219~~40123201 ~~982~~959.~~87989905~~47866704 0.~~98287990~~95947867 423.~~65537219~~40123201 A-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-3 0.00000000 527.~~48390347~~56602273 ~~979~~952.~~83298092~~26695819 0.~~97983298~~95226696 527.~~48390347~~56602273 A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 APO 0.00000000 020.~~99124009~~17952814 ~~998~~977.~~04080836~~86128022 0.~~99804081~~97786128 020.~~99124009~~17952814 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 0.~~78741212~~79370197 ~~998~~997.~~43135700~~63765503 0.~~99843136~~99763766 0.~~78741212~~79370197 B-2 0.00000000 0.~~78741408~~79370370 ~~998~~997.~~43135802~~63765432 0.~~99843136~~99763765 0.~~78741408~~79370370 B-3 0.00000000 0.~~78741241~~79370370 ~~998~~997.~~43135636~~63765265 0.~~99843136~~99763765 0.~~78741241~~79370370 B-4 0.00000000 0.~~78741742~~79370370 ~~998~~997.~~43136136~~63765766 0.~~99843136~~99763766 0.~~78741742~~79370370 B-5 0.00000000 0.~~78741822~~79370327 ~~998~~997.~~43135514~~63765187 0.~~99843136~~99763765 0.~~78741822~~79370327 B-6 0.00000000 0.~~78741323~~79370629 ~~998~~997.~~43135656~~63765027 0.~~99843136~~99763765 0.~~78741323~~79370629 (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 26,826,100.00 2.~~41000~~41375% 26,~~491~~366,~~719~~834.9446 53,~~204~~035.2079 0.00 0.00 A-2 0.00 6.~~59000~~58625% 26,~~491~~366,~~719~~834.9446 ~~145~~144,~~483~~715.7047 0.00 0.00 A-3 204,957,900.00 6.50000% ~~201~~200,~~948~~824,~~479~~510.4612 1,~~093~~087,~~887~~799.6043 0.00 0.00 A-4 10,827,000.00 6.50000% 10,827,000.00 58,646.25 0.00 0.00 A-5 25,650,000.00 6.50000% 25,650,000.00 138,937.50 0.00 0.00 APO 761,319.09 0.00000% ~~760~~759,~~582~~827.1752 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 AX 0.00 6.75000% 16,~~717~~609,~~466~~994.5960 9493,~~035~~431.7522 0.00 0.00 B-1 8,563,000.00 6.75000% 8,~~556~~549,~~310~~567.3371 48,~~129~~091.2532 0.00 0.00 B-2 2,997,000.00 6.75000% 2,~~994~~992,~~658~~298.6578 16,~~844~~831.9568 0.00 0.00 B-3 1,998,000.00 6.75000% 1,~~996~~994,~~439~~865.1085 11,~~229~~221.9712 0.00 0.00 B-4 999,000.00 6.75000% ~~998~~997,~~219~~432.5593 5,~~614~~610.9856 0.00 0.00 B-5 856,000.00 6.75000% ~~855~~854,~~331~~657.2724 4,~~811~~807.2445 0.00 0.00 B-6 999,513.31 6.75000% ~~998~~997,~~732~~945.4643 5,~~617~~613.8744 0.00 0.00 Totals 285,434,932.40 1,~~676~~668,~~443~~741.2623 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 0.00 0.00 53,~~204~~035.2079 0.00 2625,~~366~~739,~~834~~070.4667 A-2 0.00 0.00 ~~145~~144,~~483~~715.7047 0.00 2625,~~366~~739,~~834~~070.4667 A-3 0.00 0.00 1,~~093~~087,~~887~~799.6043 0.00 ~~200~~195,~~824~~174,~~510~~635.1299 A-4 0.00 0.00 58,646.25 0.00 10,827,000.00 A-5 0.00 0.00 138,937.50 0.00 25,650,000.00 APO 0.00 0.00 0.00 0.00 ~~759~~744,~~827~~464.5246 A-R 0.00 0.00 0.00 0.00 0.00 A-LR 0.00 0.00 0.00 0.00 0.00 AX 0.00 0.00 9493,~~035~~431.7522 0.00 16,~~609~~235,~~994~~171.6078 B-1 0.00 0.00 48,~~129~~091.2532 0.00 8,~~549~~542,~~567~~771.7124 B-2 0.00 0.00 16,~~844~~831.9568 0.00 2,~~992~~989,~~298~~920.7805 B-3 0.00 0.00 11,~~229~~221.9712 0.00 1,~~994~~993,~~865~~280.8503 B-4 0.00 0.00 5,~~614~~610.9856 0.00 ~~997~~996,~~432~~640.9302 B-5 0.00 0.00 4,~~811~~807.2445 0.00 ~~854~~853,~~657~~977.2483 B-6 0.00 0.00 5,~~617~~613.8744 0.00 997,~~945~~152.4311 Totals 0.00 0.00 1,~~676~~668,~~443~~741.2623 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 26,826,100.00 2.~~41000~~41375% ~~987~~982.~~53527125~~87989905 1.~~98329985~~97702200 0.00000000 0.00000000 A-2 0.00 6.~~59000~~58625% ~~987~~982.~~53527125~~87989905 5.~~42321471~~39457730 0.00000000 0.00000000 A-3 204,957,900.00 6.50000% ~~985~~979.~~31688439~~83298092 5.~~33713314~~30742865 0.00000000 0.00000000 A-4 10,827,000.00 6.50000% 1000.00000000 5.41666667 0.00000000 0.00000000 A-5 25,650,000.00 6.50000% 1000.00000000 5.41666667 0.00000000 0.00000000 APO 761,319.09 0.00000% ~~999~~998.~~03204844~~04080836 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 AX 0.00 6.75000% ~~986~~980.~~88182637~~53743482 5.~~55121030~~51552309 0.00000000 0.00000000 B-1 8,563,000.00 6.75000% ~~999~~998.~~21877029~~43135700 5.~~62060610~~61617657 0.00000000 0.00000000 B-2 2,997,000.00 6.75000% ~~999~~998.~~21876877~~43135802 5.~~62060394~~61617618 0.00000000 0.00000000 B-3 1,998,000.00 6.75000% ~~999~~998.~~21876877~~43135636 5.~~62060561~~61617618 0.00000000 0.00000000 B-4 999,000.00 6.75000% ~~999~~998.~~21876877~~43136136 5.~~62060060~~61617618 0.00000000 0.00000000 B-5 856,000.00 6.75000% ~~999~~998.~~21877336~~43135514 5.~~62060748~~61617991 0.00000000 0.00000000 B-6 999,513.31 6.75000% ~~999~~998.~~21876978~~43135656 5.~~62060549~~61617334 0.00000000 0.00000000 (5) All classes are per $1,000 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 0.00000000 1.~~98329985~~97702200 0.00000000 ~~982~~959.~~87989905~~47866704 A-2 0.00000000 0.00000000 5.~~42321471~~39457730 0.00000000 ~~982~~959.~~87989905~~47866704 A-3 0.00000000 0.00000000 5.~~33713314~~30742865 0.00000000 ~~979~~952.~~83298092~~26695819 A-4 0.00000000 0.00000000 5.41666667 0.00000000 1000.00000000 A-5 0.00000000 0.00000000 5.41666667 0.00000000 1000.00000000 APO 0.00000000 0.00000000 0.00000000 0.00000000 ~~998~~977.~~04080836~~86128022 A-R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AX 0.00000000 0.00000000 5.~~55121030~~51552309 0.00000000 ~~980~~958.~~53743482~~41052778 B-1 0.00000000 0.00000000 5.~~62060610~~61617657 0.00000000 ~~998~~997.~~43135700~~63765503 B-2 0.00000000 0.00000000 5.~~62060394~~61617618 0.00000000 ~~998~~997.~~43135802~~63765432 B-3 0.00000000 0.00000000 5.~~62060561~~61617618 0.00000000 ~~998~~997.~~43135636~~63765265 B-4 0.00000000 0.00000000 5.~~62060060~~61617618 0.00000000 ~~998~~997.~~43136136~~63765766 B-5 0.00000000 0.00000000 5.~~62060748~~61617991 0.00000000 ~~998~~997.~~43135514~~63765187 B-6 0.00000000 0.00000000 5.~~62060549~~61617334 0.00000000 ~~998~~997.~~43135656~~63765027 (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 27,~~947~~997,~~608~~956.0174 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 5035,~~134~~315.2520 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits 28,~~997~~033,~~742~~271.2694 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 58,~~766~~503.1007 Payment of Interest and Principal 27,~~938~~974,~~976~~768.1687 Total Withdrawals (Pool Distribution Amount) 28,~~997~~033,~~742~~271.2694 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee 58,~~766~~503.1007 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 58,~~766~~503.1007

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 2521 0 0 0 2521 74,~~203~~796,~~638~~562.2850 0.00 0.00 0.00 74,~~203~~796,~~638~~562.2850 60 Days 1 0 0 0 1 ~~154~~379,~~256~~419.4992 0.00 0.00 0.00 ~~154~~379,~~256~~419.4992 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 2622 0 0 0 2622 75,~~357~~175,~~894~~982.7742 0.00 0.00 0.00 75,~~357~~175,~~894~~982.7742 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 21.~~291476~~960784% 0.000000% 0.000000% 0.000000% 21.~~291476~~960784% 21.~~563756~~746224% 0.000000% 0.000000% 0.000000% 21.~~563756~~746224% 60 Days 0.~~091659~~093371% 0.000000% 0.000000% 0.000000% 0.~~091659~~093371% 0.~~054899~~138131% 0.000000% 0.000000% 0.000000% 0.~~054899~~138131% 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 2.~~383135~~054155% 0.000000% 0.000000% 0.000000% 2.~~383135~~054155% 21.~~618655~~884355% 0.000000% 0.000000% 0.000000% 21.~~618655~~884355%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 5035,~~134~~315.2520

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 17,173,832.40 6.01672411% 17,~~146~~118,~~595~~205.4674 6.~~10601254~~23593806% 94.~~148735~~019040% 100.000000% Class B-1 7,849,513.31 2.75001845% 7,~~837~~830,~~200~~970.2304 2.~~79087723~~85271978% 3.~~052816~~120482% 0.000000% Class B-2 4,852,513.31 1.70004185% 4,~~844~~841,~~901~~049.4599 1.~~72530046~~76353108% 1.~~068468~~092151% 0.000000% Class B-3 2,854,513.31 1.00005745% 2,~~850~~847,~~035~~769.6096 1.~~01491594~~03740528% 0.~~712312~~728100% 0.000000% Class B-4 1,855,513.31 0.65006525% 1,~~852~~851,~~602~~129.6794 0.~~65972368~~67434238% 0.~~356156~~364050% 0.000000% Class B-5 999,513.31 0.35017203% 997,~~945~~152.4311 0.~~35537476~~36324945% 0.~~305175~~311939% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~356339~~364237% 0.000000% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 107,000.00 0.03748665% 107,000.00 0.~~03810339~~03897870% Fraud 107,000.00 0.03748665% 107,000.00 0.~~03810339~~03897870% Special Hazard 2,997,717.00 1.05022780% 2,997,717.00 1.~~06750624~~09202903% Limit of Subordinate's Exposure to Certain Types of Losses

COLLATERAL STATEMENT Collateral Description Fixed 30 Year Ratio Strip Weighted Average Gross Coupon 7.~~381842~~380993% Weighted Average Pass-Through Rate 7.~~131842~~130993% Weighted Average Maturity(Stepdown Calculation ) ~~355~~354 Beginning Scheduled Collateral Loan Count 1,~~097~~091 Number Of Loans Paid In Full 620 Ending Scheduled Collateral Loan Count 1,~~091~~071 Beginning Scheduled Collateral Balance ~~282~~280,~~077~~814,~~472~~940.9404 Ending Scheduled Collateral Balance ~~280~~274,~~814~~508,~~940~~912.0441 Ending Actual Collateral Balance at 3130-~~Aug~~Sep-2002 ~~280~~274,~~979~~681,~~870~~919.6842 Monthly P &I Constant 1,~~957~~950,~~565~~548.9997 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 27,~~833~~854,~~049~~203.8358 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans ~~280~~274,~~814~~508,~~940~~912.0441 Scheduled Principal ~~222~~223,~~356~~304.5477 Unscheduled Principal 16,~~040~~082,~~176~~722.3686

Miscellaneous Reporting Senior Percentage 94.~~170385~~148735% Junior Percentage 5.~~829615~~851265% Senior Prepayment Percentage 100.000000%

Filing Compare · MORTGAGE ASSET SEC TRANSACTIONS INC MASTR ALT LN TR 2002 1