8-K 1 mam02001.txt MAY 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 Form 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 28, 2002 MASTR ADJUSTABLE RATE MORTGAGES TRUST Mortgage Pass-Through Certificates, Series 2002-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-75724-03 Pooling and Servicing Agreement) (Commission 74-3040739 (State or other File Number) 74-3040744 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 May 28, 2002 a distribution was made to holders of MASTR ADJUSTABLE RATE MORTGAGES 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 May 28, 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 ADJUSTABLE RATE MORTGAGES TRUST Mortgage Pass-Through Certificates, Series 2002-1 Trust By: Wells Fargo Bank Minnesota, NA, as Master Servicer By: /s/ Beth Belfield, Assistant Vice President By: Beth Belfield, Assistant Vice President Date: 5/31/02 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 May 28, 2002 distribution. EX-99.1

Mortgage Asset Securitization Transactions, Inc Mortgage Pass-Through Certificates Record Date: 24/2830/02 Distribution Date: 35/2528/02 MARM 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 576433AJ5 SEN 5.~~90134~~89785% ~~101~~100,~~741~~266,~~000~~450.0099 ~~500~~492,~~340~~797.4322 ~~108~~1,~~154~~111,864.7631 A-2 576433AK2 SEN 5.~~29934~~30000% 5049,~~000~~275,~~000~~341.0079 ~~220~~217,~~805~~632.9576 53546,~~152~~419.00 A-3 576433AL0 SEN 0.~~60200~~59785% 0.00 2524,~~083~~549.3346 0.00 A-R 576433AM8 RES 5.~~90134~~89785% 500.00 0.2500 500.00 A-LR 576433AN6 RES 5.~~90134~~89785% 500.00 0.2500 500.00 B-1 576433AP1 SUB 5.~~90134~~89785% 1,~~564~~560,~~000~~922.0035 7,~~691~~671.4274 1,~~534~~553.5028 B-2 576433AQ9 SUB 5.~~90134~~89785% 1,~~173~~170,~~000~~691.0077 5,~~768~~753.5681 1,~~150~~164.8896 B-3 576433AR7 SUB 5.~~90134~~89785% 1,~~017~~014,~~000~~998.0074 54,~~001~~988.3959 ~~997~~1,010.8203 B-4 576433AS5 SUB 5.~~90134~~89785% ~~313~~312,~~000~~384.0008 1,~~539~~535.2733 ~~307~~310.1085 B-5 576433AT3 SUB 5.~~90134~~89785% ~~156~~155,~~000~~693.0002 ~~767~~765.1721 ~~153~~154.0693 B-6 576433AU0 SUB 5.~~90134~~89785% ~~470~~469,~~426~~500.6897 2,~~313~~307.4654 ~~461~~467.5520 Totals ~~156~~154,~~434~~225,~~526~~983.6871 ~~769~~758,~~311~~001.4866 ~~166~~1,~~011~~662,944.6756

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 ~~101~~99,~~632~~154,~~845~~586.2468 ~~608~~1,~~495~~604,661.1953 0.00 A-2 0.00 4948,~~946~~728,~~848~~922.0079 ~~273~~764,~~957~~051.9576 0.00 A-3 0.00 0.00 2524,~~083~~549.3346 0.00 A-R 0.00 0.00 500.2500 0.00 A-LR 0.00 0.00 500.2500 0.00 B-1 0.00 1,~~562~~559,~~465~~369.5008 9,225.9202 0.00 B-2 0.00 1,~~171~~169,~~849~~526.1281 6,~~919~~918.4477 0.00 B-3 0.00 1,~~016~~013,~~002~~988.1872 5,~~999~~998.2162 0.00 B-4 0.00 312,~~692~~073.9022 1,846.3718 0.00 B-5 0.00 155,~~846~~538.9409 920.2314 0.00 B-6 0.00 469,~~965~~033.1377 2,~~775~~774.0174 0.00 Totals 0.00 ~~156~~152,~~268~~563,~~515~~039.0116 ~~935~~2,~~323~~420,946.1522 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-1 101,741,000.00 ~~101~~100,~~741~~266,~~000~~450.0099 99,~~760~~775.4223 81,~~394~~012,089.3308 0.00 0.00 A-2 50,000,000.00 5049,~~000~~275,~~000~~341.0079 49,~~026~~033.6694 4497,~~125~~385.3407 0.00 0.00 A-3 0.00 0.00 0.00 0.00 0.00 0.00 A-R 50.00 500.00 460.1200 30.8800 0.00 0.00 A-LR 50.00 500.00 460.1200 30.8800 0.00 0.00 B-1 1,564,000.00 1,~~564~~560,~~000~~922.0035 1,~~534~~553.5028 0.00 0.00 0.00 B-2 1,173,000.00 1,~~173~~170,~~000~~691.0077 1,~~150~~164.8896 0.00 0.00 0.00 B-3 1,017,000.00 1,~~017~~014,~~000~~998.0074 ~~997~~1,010.8203 0.00 0.00 0.00 B-4 313,000.00 ~~313~~312,~~000~~384.0008 ~~307~~310.1085 0.00 0.00 0.00 B-5 156,000.00 ~~156~~155,~~000~~693.0002 ~~153~~154.0693 0.00 0.00 0.00 B-6 470,426.68 ~~470~~469,~~426~~500.6897 ~~461~~467.5520 0.00 0.00 0.00 Totals 156,434,526.68 ~~156~~154,~~434~~225,~~526~~983.6871 153,~~484~~470.2342 121,~~527~~509,474.4315 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 ~~108~~1,~~154~~111,864.7631 ~~101~~99,~~632~~154,~~845~~586.2468 0.~~99893696~~97457846 ~~108~~1,~~154~~111,864.7631 A-2 53546,~~152~~419.00 4948,~~946~~728,~~848~~922.0079 0.~~99893696~~97457846 53546,~~152~~419.00 A-3 0.00 0.00 0.00000000 0.00 A-R 500.00 0.00 0.00000000 500.00 A-LR 500.00 0.00 0.00000000 500.00 B-1 1,~~534~~553.5028 1,~~562~~559,~~465~~369.5008 0.~~99901886~~99703905 1,~~534~~553.5028 B-2 1,~~150~~164.8896 1,~~171~~169,~~849~~526.1281 0.~~99901886~~99703905 1,~~150~~164.8896 B-3 ~~997~~1,010.8203 1,~~016~~013,~~002~~988.1872 0.~~99901886~~99703906 ~~997~~1,010.8203 B-4 ~~307~~310.1085 312,~~692~~073.9022 0.~~99901885~~99703904 ~~307~~310.1085 B-5 ~~153~~154.0693 155,~~846~~538.9409 0.~~99901885~~99703904 ~~153~~154.0693 B-6 ~~461~~467.5520 469,~~965~~033.1377 0.~~99901887~~99703905 ~~461~~467.5520 Totals ~~166~~1,~~011~~662,944.6756 ~~156~~152,~~268~~563,~~515~~039.0116 0.~~99893878~~97525171 ~~166~~1,~~011~~662,944.6756

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion A-1 101,741,000.00 ~~1000~~985.~~00000000~~50683589 0.~~98053312~~98067868 09.~~08250686~~94770132 0.00000000 A-2 50,000,000.00 ~~1000~~985.~~00000000~~50683580 0.~~98053320~~98067880 09.~~08250680~~94770140 0.00000000 A-3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-R 50.00 ~~1000~~0.00000000 ~~922~~0.~~40000000~~00000000 770.~~60000000~~00000000 0.00000000 A-LR 50.00 ~~1000~~0.00000000 ~~922~~0.~~40000000~~00000000 770.~~60000000~~00000000 0.00000000 B-1 1,564,000.00 ~~1000~~998.~~00000000~~03219309 0.~~98113811~~99314578 0.00000000 0.00000000 B-2 1,173,000.00 ~~1000~~998.~~00000000~~03219949 0.~~98114237~~99314578 0.00000000 0.00000000 B-3 1,017,000.00 ~~1000~~998.~~00000000~~03219272 0.~~98114061~~99314651 0.00000000 0.00000000 B-4 313,000.00 ~~1000~~998.~~00000000~~03220447 0.~~98115016~~99313099 0.00000000 0.00000000 B-5 156,000.00 ~~1000~~998.~~00000000~~03217949 0.~~98115385~~99314103 0.00000000 0.00000000 B-6 470,426.68 ~~1000~~998.~~00000000~~03219069 0.~~98113058~~99314095 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 110.~~06304007~~92838000 ~~998~~974.~~93695993~~57845588 0.~~99893696~~97457846 110.~~06304007~~92838000 A-2 0.00000000 110.~~06304000~~92838000 ~~998~~974.~~93696000~~57845580 0.~~99893696~~97457846 110.~~06304000~~92838000 A-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-R 0.00000000 ~~1,000~~0.00000000 0.00000000 0.00000000 ~~1,000~~0.00000000 A-LR 0.00000000 ~~1,000~~0.00000000 0.00000000 0.00000000 ~~1,000~~0.00000000 B-1 0.00000000 0.~~98113811~~99314578 ~~999~~997.~~01886189~~03905371 0.~~99901886~~99703905 0.~~98113811~~99314578 B-2 0.00000000 0.~~98114237~~99314578 ~~999~~997.~~01885763~~03905371 0.~~99901886~~99703905 0.~~98114237~~99314578 B-3 0.00000000 0.~~98114061~~99314651 ~~999~~997.~~01885939~~03905605 0.~~99901886~~99703906 0.~~98114061~~99314651 B-4 0.00000000 0.~~98115016~~99313099 ~~999~~997.~~01884984~~03904153 0.~~99901885~~99703904 0.~~98115016~~99313099 B-5 0.00000000 0.~~98115385~~99314103 ~~999~~997.~~01884615~~03903846 0.~~99901885~~99703904 0.~~98115385~~99314103 B-6 0.00000000 0.~~98113058~~99314095 ~~999~~997.~~01886942~~03904974 0.~~99901887~~99703905 0.~~98113058~~99314095 (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-1 101,741,000.00 5.~~90134~~89785% ~~101~~100,~~741~~266,~~000~~450.0099 ~~500~~492,~~340~~797.4322 0.00 0.00 A-2 50,000,000.00 5.~~29934~~30000% 5049,~~000~~275,~~000~~341.0079 ~~220~~217,~~805~~632.9576 0.00 0.00 A-3 0.00 0.~~60200~~59785% 5049,~~000~~275,~~000~~341.0079 2524,~~083~~549.3346 0.00 0.00 A-R 50.00 5.~~90134~~89785% 500.00 0.2500 0.00 0.00 A-LR 50.00 5.~~90134~~89785% 500.00 0.2500 0.00 0.00 B-1 1,564,000.00 5.~~90134~~89785% 1,~~564~~560,~~000~~922.0035 7,~~691~~671.4274 0.00 0.00 B-2 1,173,000.00 5.~~90134~~89785% 1,~~173~~170,~~000~~691.0077 5,~~768~~753.5681 0.00 0.00 B-3 1,017,000.00 5.~~90134~~89785% 1,~~017~~014,~~000~~998.0074 54,~~001~~988.3959 0.00 0.00 B-4 313,000.00 5.~~90134~~89785% ~~313~~312,~~000~~384.0008 1,~~539~~535.2733 0.00 0.00 B-5 156,000.00 5.~~90134~~89785% ~~156~~155,~~000~~693.0002 ~~767~~765.1721 0.00 0.00 B-6 470,426.68 5.~~90134~~89785% ~~470~~469,~~426~~500.6897 2,~~313~~307.4654 0.00 0.00 Totals 156,434,526.68 ~~769~~758,~~311~~001.4866 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 ~~500~~492,~~340~~797.4322 0.00 ~~101~~99,~~632~~154,~~845~~586.2468 A-2 0.00 0.00 ~~220~~217,~~805~~632.9576 0.00 4948,~~946~~728,~~848~~922.0079 A-3 0.00 0.00 2524,~~083~~549.3346 0.00 4948,~~946~~728,~~848~~922.0079 A-R 0.00 0.00 0.2500 0.00 0.00 A-LR 0.00 0.00 0.2500 0.00 0.00 B-1 0.00 0.00 7,~~691~~671.4274 0.00 1,~~562~~559,~~465~~369.5008 B-2 0.00 0.00 5,~~768~~753.5681 0.00 1,~~171~~169,~~849~~526.1281 B-3 0.00 0.00 54,~~001~~988.3959 0.00 1,~~016~~013,~~002~~988.1872 B-4 0.00 0.00 1,~~539~~535.2733 0.00 312,~~692~~073.9022 B-5 0.00 0.00 ~~767~~765.1721 0.00 155,~~846~~538.9409 B-6 0.00 0.00 2,~~313~~307.4654 0.00 469,~~965~~033.1377 Totals 0.00 0.00 ~~769~~758,~~311~~001.4866 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-1 101,741,000.00 5.~~90134~~89785% ~~1000~~985.~~00000000~~50683589 4.~~91778565~~84364435 0.00000000 0.00000000 A-2 50,000,000.00 5.~~29934~~30000% ~~1000~~985.~~00000000~~50683580 4.~~41611900~~35265520 0.00000000 0.00000000 A-3 0.00 0.~~60200~~59785% ~~1000~~985.~~00000000~~50683580 0.~~50166660~~49098920 0.00000000 0.00000000 A-R 50.00 5.~~90134~~89785% ~~1000~~0.00000000 50.00000000 0.00000000 0.00000000 A-LR 50.00 5.~~90134~~89785% ~~1000~~0.00000000 50.00000000 0.00000000 0.00000000 B-1 1,564,000.00 5.~~90134~~89785% ~~1000~~998.~~00000000~~03219309 4.~~91778772~~90520460 0.00000000 0.00000000 B-2 1,173,000.00 5.~~90134~~89785% ~~1000~~998.~~00000000~~03219949 4.~~91778346~~90520887 0.00000000 0.00000000 B-3 1,017,000.00 5.~~90134~~89785% ~~1000~~998.~~00000000~~03219272 4.~~91778761~~90520157 0.00000000 0.00000000 B-4 313,000.00 5.~~90134~~89785% ~~1000~~998.~~00000000~~03220447 4.~~91779553~~90520767 0.00000000 0.00000000 B-5 156,000.00 5.~~90134~~89785% ~~1000~~998.~~00000000~~03217949 4.~~91775641~~90519231 0.00000000 0.00000000 B-6 470,426.68 5.~~90134~~89785% ~~1000~~998.~~00000000~~03219069 4.~~91779080~~90520648 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 4.~~91778565~~84364435 0.00000000 ~~998~~974.~~93695993~~57845588 A-2 0.00000000 0.00000000 4.~~41611900~~35265520 0.00000000 ~~998~~974.~~93696000~~57845580 A-3 0.00000000 0.00000000 0.~~50166660~~49098920 0.00000000 ~~998~~974.~~93696000~~57845580 A-R 0.00000000 0.00000000 50.00000000 0.00000000 0.00000000 A-LR 0.00000000 0.00000000 50.00000000 0.00000000 0.00000000 B-1 0.00000000 0.00000000 4.~~91778772~~90520460 0.00000000 ~~999~~997.~~01886189~~03905371 B-2 0.00000000 0.00000000 4.~~91778346~~90520887 0.00000000 ~~999~~997.~~01885763~~03905371 B-3 0.00000000 0.00000000 4.~~91778761~~90520157 0.00000000 ~~999~~997.~~01885939~~03905605 B-4 0.00000000 0.00000000 4.~~91779553~~90520767 0.00000000 ~~999~~997.~~01884984~~03904153 B-5 0.00000000 0.00000000 4.~~91775641~~90519231 0.00000000 ~~999~~997.~~01884615~~03903846 B-6 0.00000000 0.00000000 4.~~91779080~~90520648 0.00000000 ~~999~~997.~~01886942~~03904974 (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 ~~968~~2,~~513~~454,031.0616 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 3,~~752~~345.9768 Realized Losses 0.00 Prepayment Penalties 0.00 Total Deposits ~~972~~2,~~266~~457,376.0384 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 36,~~942~~430.8862 Payment of Interest and Principal ~~935~~2,~~323~~420,946.1522 Total Withdrawals (Pool Distribution Amount) ~~972~~2,~~266~~457,376.0384 Ending Balance 0.00

SERVICING FEES Gross Servicing Fee 3332,~~357~~896.9332 Master Servicing Fee 3,~~584~~534.9530 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 36,~~942~~430.8862

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 21 0 0 0 21 ~~610~~538,~~892~~078.6044 0.00 0.00 0.00 ~~610~~538,~~892~~078.6044 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 21 0 0 0 21 ~~610~~538,~~892~~078.6044 0.00 0.00 0.00 ~~610~~538,~~892~~078.6044 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.~~560224~~285714% 0.000000% 0.000000% 0.000000% 0.~~560224~~285714% 0.~~390626~~352418% 0.000000% 0.000000% 0.000000% 0.~~390626~~352418% 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.~~560224~~285714% 0.000000% 0.000000% 0.000000% 0.~~560224~~285714% 0.~~390626~~352418% 0.000000% 0.000000% 0.000000% 0.~~390626~~352418%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 3,~~752~~345.9768

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 4,693,426.68 3.00024987% 4,~~688~~679,~~821~~529.7769 3.~~00049039~~06727613% 96.~~999510~~932724% 100.000000% Class B-1 3,129,426.68 2.00047058% 3,~~126~~120,~~356~~160.2761 2.~~00063095~~04516155% 01.~~999859~~022115% 0.000000% Class B-2 1,956,426.68 1.25063611% 1,~~954~~950,~~507~~633.1580 1.~~25073637~~27857560% 0.~~749895~~766586% 0.000000% Class B-3 939,426.68 0.60052387% ~~938~~936,~~504~~645.9708 0.~~60057202~~61393971% 0.~~650164~~664636% 0.000000% Class B-4 626,426.68 0.40044017% ~~625~~624,~~812~~571.0786 0.~~40047227~~40938609% 0.~~200100~~204554% 0.000000% Class B-5 470,426.68 0.30071794% 469,~~965~~033.1377 0.~~30074205~~30743604% 0.~~099730~~101950% 0.000000% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~300742~~307436% 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 0.06392451% 100,000.00 0.~~06399242~~06554668% Fraud 3,135,218.64 2.00417306% 3,135,218.64 2.~~00630219~~05503158% Special Hazard 3,354,233.00 2.14417691% 3,354,233.00 2.~~14645477~~19858822% Limit of Subordinate's Exposure to Certain Types of Losses

COLLATERAL STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 6.~~184729~~181311% Weighted Average Net Coupon 5.~~928843~~925352% Weighted Average Pass-Through Rate 5.~~901343~~897852% Weighted Average Maturity(Stepdown Calculation ) ~~356~~354 Beginning Scheduled Collateral Loan Count ~~357~~353 Number Of Loans Paid In Full 03 Ending Scheduled Collateral Loan Count ~~357~~350 Beginning Scheduled Collateral Balance ~~156~~154,~~434~~225,~~526~~983.6872 Ending Scheduled Collateral Balance ~~156~~152,~~268~~563,~~515~~039.0116 Ending Actual Collateral Balance at 2830-~~Feb~~Apr-2002 ~~156~~152,~~387~~682,~~977~~026.9570 Monthly P &I Constant ~~959~~947,~~738~~902.5868 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount ~~907~~2,~~636~~393,262.9775 Ending Scheduled Balance for Premium Loans ~~156~~152,~~268~~563,~~515~~039.0116 Scheduled Principal 153,~~484~~470.2341 Unscheduled Principal 121,~~527~~509,474.4415

Filing Compare · MASTR ADJUSTABLE RATE MORTGAGE TRUST 2002-1