8-K 1 mst03005.txt JUNE 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): June 25, 2003 MASTR ASSET SECURITIZATION TRUST Mortgage Pass-Through Certificates, Series 2003-5 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-101254-06 Pooling and Servicing Agreement) (Commission Pending (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 June 25, 2003 a distribution was made to holders of MASTR ASSET SECURITIZATION TRUST, Mortgage Pass-Through Certificates, Series 2003-5 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 2003-5 Trust, relating to the June 25, 2003 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 2003-5 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: 7/2/03 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-5 Trust, relating to the June 25, 2003 distribution. EX-99.1

~~SECURITIES~~Mortgage ~~AND~~Asset ~~EXCHANGE~~Securitization ~~COMMISSION~~Transactions, Inc. Mortgage Pass-Through Certificates Record Date: 5/31/03 Distribution Date: 6/25/03 MASTR Series: 2003-5 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 1-A-1 55265KXH7 SEN 5.50000% 256,573,000.00 1,174,613.51 632,593.42 A-R 55265KYA1 SEN 5.50000% 100.00 1.55 100.00 2-A-1 55265KXJ3 SEN 5.00000% 332,145,000.00 1,382,353.37 7,596,703.55 2-A-2 55265KXK0 SEN 5.00000% 31,000,000.00 129,018.82 786,659.89 2-A-3 55265KXL8 SEN 4.50000% 25,000,000.00 93,642.69 634,403.14 2-A-4 55265KXM6 SEN 8.00000% 4,166,666.00 27,745.98 105,733.84 2-A-5 55265KXN4 SEN 5.00000% 6,588,334.00 27,419.97 0.00 3-A-1 55265KXP9 SEN 5.00000% 20,000,000.00 83,237.95 604,234.42 4-A-1 55265KXQ7 SEN 8.00000% 12,000,000.00 79,908.43 225,988.95 4-A-2 55265KXR5 SEN 4.50000% 30,000,000.00 112,371.23 564,972.38 4-A-3 55265KXS3 SEN 5.50000% 800,000.00 3,662.47 0.00 4-A-4 55265KXT1 SEN 5.50000% 339,565,000.00 1,554,558.11 5,635,273.85 4-A-5 55265KXU8 LOCK 5.50000% 4,861,000.00 22,254.08 0.00 5-A-1 55265KXV6 SEN 5.00000% 200,000,000.00 832,379.45 1,759,912.90 15-PO 55265KXW4 PO 0.00000% 465,331.31 0.00 1,742.64 30-PO 55265KXX2 PO 0.00000% 503,357.31 0.00 1,194.22 15-AX 55265KXY0 IO 5.00000% 0.00 153,855.55 0.00 30-AX 55265KXZ7 IO 5.50000% 0.00 166,858.02 0.00 B-1 55265KYB9 SUB 5.24900% 14,184,000.00 61,972.16 32,526.31 B-2 55265KYC7 SUB 5.24900% 4,513,000.00 19,718.02 10,349.07 B-3 55265KYD5 SUB 5.24900% 2,579,000.00 11,268.06 5,914.08 B-4 55265KXE4 SUB 5.24900% 1,934,000.00 8,449.95 4,434.99 B-5 55265KXF1 SUB 5.24900% 1,289,000.00 5,631.85 2,955.89 B-6 55265KXG9 SUB 5.24900% 1,290,260.00 5,637.35 2,958.78 Totals 1,289,457,048.62 5,956,558.57 18,608,652.32

~~Washington~~Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1-A-1 0.00 255,940,406.58 D1,807,206.C93 0. ~~20549~~00 A-R 0.00 0.00 101.55 0.00 2-A-1 0.00 324,548,296.45 8,979,056.92 0.00 2-A-2 0.00 30,213,340.11 915,678.71 0.00 2-A-3 0.00 24,365,596.86 728,045.83 0.00 2-A-4 0.00 4,060,932.16 133,479.82 0.00 2-A-5 0.00 6,588,334.00 27,419.97 0.00 3-A-1 0.00 19,395,765.58 687,472.37 0.00 4-A-1 0.00 11,774,011.05 305,897.38 0.00 4-A-2 0.00 29,435,027.62 677,343.61 0.00 4-A-3 0.00 800,000.00 3,662.47 0.00 4-A-4 0.00 333,929,726.15 7,189,831.96 0.00 4-A-5 0.00 4,861,000.00 22,254.08 0.00 5-A-1 0.00 198,240,087.10 2,592,292.35 0.00 15-PO 0.00 463,588.67 1,742.64 0.00 30-PO 0.00 502,163.09 1,194.22 0.00 15-AX 0.00 0.00 153,855.55 0.00 30-AX 0.00 0.00 166,858.02 0.00 B-1 0.00 14,151,473.69 94,498.47 0.00 B-2 0.00 4,502,650.93 30,067.09 0.00 B-3 0.00 2,573,085.92 17,182.14 0.00 B-4 0.00 1,929,565.01 12,884.94 0.00 B-5 0.00 1,286,044.11 8,587.74 0.00 B-6 0.00 1,287,301.22 8,596.13 0.00 Totals 0.00 1,270,848,396.30 24,565,210.89 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

~~Form~~Principal 8Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1-KA-1 256,573,000.00 256,573,000.00 257,467.92 375,125.50 0.00 0.00 A-R 100.00 100.00 40.70 59.30 0.00 0.00 2-A-1 332,145,000.00 332,145,000.00 1,183,189.41 6,413,514.14 0.00 0.00 2-A-2 31,000,000.00 31,000,000.00 122,522.57 664,137.32 0.00 0.00 2-A-3 25,000,000.00 25,000,000.00 98,808.53 535,594.61 0.00 0.00 2-A-4 4,166,666.00 4,166,666.00 16,468.08 89,265.75 0.00 0.00 2-A-5 6,588,334.00 6,588,334.00 0.00 0.00 0.00 0.00 3-A-1 20,000,000.00 20,000,000.00 73,288.00 530,946.42 0.00 0.00 4-A-1 12,000,000.00 12,000,000.00 13,382.29 212,606.66 0.00 0.00 4-A-2 30,000,000.00 30,000,000.00 33,455.73 531,516.66 0.00 0.00 4-A-3 800,000.00 800,000.00 0.00 0.00 0.00 0.00 4-A-4 339,565,000.00 339,565,000.00 333,701.59 5,301,572.26 0.00 0.00 4-A-5 4,861,000.00 4,861,000.00 0.00 0.00 0.00 0.00 5-A-1 200,000,000.00 200,000,000.00 723,877.25 1,036,035.65 0.00 0.00 15-PO 465,331.31 465,331.31 1,703.93 38.71 0.00 0.00 30-PO 503,357.31 503,357.31 517.03 677.19 0.00 0.00 15-AX 0.00 0.00 0.00 0.00 0.00 0.00 30-AX 0.00 0.00 0.00 0.00 0.00 0.00 B-1 14,184,000.00 14,184,000.00 32,526.31 0.00 0.00 0.00 B-2 4,513,000.00 4,513,000.00 10,349.07 0.00 0.00 0.00 B-3 2,579,000.00 2,579,000.00 5,914.08 0.00 0.00 0.00 B-4 1,934,000.00 1,934,000.00 4,434.99 0.00 0.00 0.00 B-5 1,289,000.00 1,289,000.00 2,955.89 0.00 0.00 0.00 B-6 1,290,260.00 1,290,260.00 2,958.78 0.00 0.00 0.00 Totals 1,289,457,048.62 1,289,457,048.62 2,917,562.15 15,691,090.17 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.

~~CURRENT~~Principal ~~REPORT~~Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1-A-1 632,593.42 255,940,406.58 0.99753445 632,593.42 A-R 100.00 0.00 0.00000000 100.00 2-A-1 7,596,703.55 324,548,296.45 0.97712835 7,596,703.55 2-A-2 786,659.89 30,213,340.11 0.97462387 786,659.89 2-A-3 634,403.14 24,365,596.86 0.97462387 634,403.14 2-A-4 105,733.84 4,060,932.16 0.97462387 105,733.84 2-A-5 0.00 6,588,334.00 1.00000000 0.00 3-A-1 604,234.42 19,395,765.58 0.96978828 604,234.42 4-A-1 225,988.95 11,774,011.05 0.98116759 225,988.95 4-A-2 564,972.38 29,435,027.62 0.98116759 564,972.38 4-A-3 0.00 800,000.00 1.00000000 0.00 4-A-4 5,635,273.85 333,929,726.15 0.98340443 5,635,273.85 4-A-5 0.00 4,861,000.00 1.00000000 0.00 5-A-1 1,759,912.90 198,240,087.10 0.99120044 1,759,912.90 15-PO 1,742.64 463,588.67 0.99625506 1,742.64 30-PO 1,194.22 502,163.09 0.99762749 1,194.22 15-AX 0.00 0.00 0.00000000 0.00 30-AX 0.00 0.00 0.00000000 0.00 B-1 32,526.31 14,151,473.69 0.99770683 32,526.31 B-2 10,349.07 4,502,650.93 0.99770683 10,349.07 B-3 5,914.08 2,573,085.92 0.99770683 5,914.08 B-4 4,434.99 1,929,565.01 0.99770683 4,434.99 B-5 2,955.89 1,286,044.11 0.99770683 2,955.89 B-6 2,958.78 1,287,301.22 0.99770683 2,958.78 Totals 18,608,652.32 1,270,848,396.30 0.98556861 18,608,652.32

~~Pursuant~~Principal toDistribution ~~Section~~Factors 13Statement orOriginal Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1-A-1 256,573,000.00 1000.00000000 1.00348797 1.46206148 0.00000000 A-R 100.00 1000.00000000 407.00000000 593.00000000 0.00000000 2-A-1 332,145,000.00 1000.00000000 3.56226771 19.30938036 0.00000000 2-A-2 31,000,000.00 1000.00000000 3.95234097 21.42378452 0.00000000 2-A-3 25,000,000.00 1000.00000000 3.95234120 21.42378440 0.00000000 2-A-4 4,166,666.00 1000.00000000 3.95233983 21.42378343 0.00000000 2-A-5 6,588,334.00 1000.00000000 0.00000000 0.00000000 0.00000000 3-A-1 20,000,000.00 1000.00000000 3.66440000 26.54732100 0.00000000 4-A-1 12,000,000.00 1000.00000000 1.11519083 17.71722167 0.00000000 4-A-2 30,000,000.00 1000.00000000 1.11519100 17.71722200 0.00000000 4-A-3 800,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 4-A-4 339,565,000.00 1000.00000000 0.98273258 15.61283483 0.00000000 4-A-5 4,861,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 5-A-1 200,000,000.00 1000.00000000 3.61938625 5.18017825 0.00000000 15-PO 465,331.31 1000.00000000 3.66175661 0.08318804 0.00000000 30-PO 503,357.31 1000.00000000 1.02716299 1.34534651 0.00000000 15-AX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 30-AX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 14,184,000.00 1000.00000000 2.29316906 0.00000000 0.00000000 B-2 4,513,000.00 1000.00000000 2.29316862 0.00000000 0.00000000 B-3 2,579,000.00 1000.00000000 2.29316789 0.00000000 0.00000000 B-4 1,934,000.00 1000.00000000 2.29316960 0.00000000 0.00000000 B-5 1,289,000.00 1000.00000000 2.29316524 0.00000000 0.00000000 B-6 1,290,260.00 1000.00000000 2.29316572 0.00000000 0.00000000 (d2) ofAll ~~the~~Classes are Per $1,000 Denomination.

~~Securities~~Principal ~~Exchange~~Distribution ~~Act~~Factors ofStatement ~~1934~~(continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution 1-A-1 0.00000000 2.46554945 997.53445055 0.99753445 2.46554945 A-R 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 2-A-1 0.00000000 22.87164808 977.12835192 0.97712835 22.87164808 2-A-2 0.00000000 25.37612548 974.62387452 0.97462387 25.37612548 2-A-3 0.00000000 25.37612560 974.62387440 0.97462387 25.37612560 2-A-4 0.00000000 25.37612566 974.62387434 0.97462387 25.37612566 2-A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 3-A-1 0.00000000 30.21172100 969.78827900 0.96978828 30.21172100 4-A-1 0.00000000 18.83241250 981.16758750 0.98116759 18.83241250 4-A-2 0.00000000 18.83241267 981.16758733 0.98116759 18.83241267 4-A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 4-A-4 0.00000000 16.59556742 983.40443258 0.98340443 16.59556742 4-A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 5-A-1 0.00000000 8.79956450 991.20043550 0.99120044 8.79956450 15-PO 0.00000000 3.74494465 996.25505535 0.99625506 3.74494465 30-PO 0.00000000 2.37250950 997.62749050 0.99762749 2.37250950 15-AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 30-AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 2.29316906 997.70683094 0.99770683 2.29316906 B-2 0.00000000 2.29316862 997.70683138 0.99770683 2.29316862 B-3 0.00000000 2.29316789 997.70683211 0.99770683 2.29316789 B-4 0.00000000 2.29316960 997.70683040 0.99770683 2.29316960 B-5 0.00000000 2.29316524 997.70683476 0.99770683 2.29316524 B-6 0.00000000 2.29316572 997.70683428 0.99770683 2.29316572 (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.

~~Date~~Interest ofDistribution ~~Report~~Statement ~~(Date~~Beginning Payment of ~~earliest~~Original ~~event~~Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1-A-1 256,573,000.00 5.50000% 256,573,000.00 1,175,959.58 0.00 0.00 A-R 100.00 5.50000% 100.00 0.46 0.00 0.00 2-A-1 332,145,000.00 5.00000% 332,145,000.00 1,383,937.50 0.00 0.00 2-A-2 31,000,000.00 5.00000% 31,000,000.00 129,166.67 0.00 0.00 2-A-3 25,000,000.00 4.50000% 25,000,000.00 93,750.00 0.00 0.00 2-A-4 4,166,666.00 8.00000% 4,166,666.00 27,777.77 0.00 0.00 2-A-5 6,588,334.00 5.00000% 6,588,334.00 27,451.39 0.00 0.00 3-A-1 20,000,000.00 5.00000% 20,000,000.00 83,333.33 0.00 0.00 4-A-1 12,000,000.00 8.00000% 12,000,000.00 80,000.00 0.00 0.00 4-A-2 30,000,000.00 4.50000% 30,000,000.00 112,500.00 0.00 0.00 4-A-3 800,000.00 5.50000% 800,000.00 3,666.67 0.00 0.00 4-A-4 339,565,000.00 5.50000% 339,565,000.00 1,556,339.58 0.00 0.00 4-A-5 4,861,000.00 5.50000% 4,861,000.00 22,279.58 0.00 0.00 5-A-1 200,000,000.00 5.00000% 200,000,000.00 833,333.33 0.00 0.00 15-PO 465,331.31 0.00000% 465,331.31 0.00 0.00 0.00 30-PO 503,357.31 0.00000% 503,357.31 0.00 0.00 0.00 15-AX 0.00 5.00000% 36,967,646.74 154,031.86 0.00 0.00 30-AX 0.00 5.50000% 36,447,104.80 167,049.23 0.00 0.00 B-1 14,184,000.00 5.24900% 14,184,000.00 62,043.18 0.00 0.00 B-2 4,513,000.00 5.24900% 4,513,000.00 19,740.61 0.00 0.00 B-3 2,579,000.00 5.24900% 2,579,000.00 11,280.98 0.00 0.00 B-4 1,934,000.00 5.24900% 1,934,000.00 8,459.64 0.00 0.00 B-5 1,289,000.00 5.24900% 1,289,000.00 5,638.30 0.00 0.00 B-6 1,290,260.00 5.24900% 1,290,260.00 5,643.81 0.00 0.00 Totals 1,289,457,048.62 5,963,383.47 0.00 0.00

~~Reported~~Interest Distribution Statement (continued)~~: June~~ 25Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance 1-A-1 1,346.07 ~~2003 MORTGAGE~~0.00 ~~ASSET~~1,174,613.51 ~~SECURITIZATION~~0.00 ~~TRANSACTIONS~~255,940,406.58 ~~INC~~A-R 0.00 ~~(as~~0.00 ~~depositor~~1.55 ~~under~~0.00 ~~the~~0.00 ~~Pooling~~2-A-1 ~~and~~1,584.13 ~~Servicing~~0.00 ~~Agreement~~1,382,353.37 ~~relating~~0.00 to324,548,296.45 ~~the~~2-A-2 ~~MASTR~~147.85 ~~Asset~~0.00 ~~Securitization~~129,018.82 ~~Trust~~0.00 ~~2003~~30,213,340.11 2-A-3 107.31 0.00 93,642.69 0.00 24,365,596.86 2-A-4 31.80 0.00 27,745.98 0.00 4,060,932.16 2-A-5 ~~Mortgage~~31.42 ~~Pass~~0.00 27,419.97 0.00 6,588,334.00 3-~~Through~~A-1 ~~Certificates~~95.39 0.00 83,237.95 ~~Series~~0.00 ~~2003~~19,395,765.58 4-A-1 91.57 0.00 79,908.43 0.00 11,774,011.05 4-A-2 128.77 0.00 112,371.23 0.00 29,435,027.62 4-A-3 4.20 0.00 3,662.47 0.00 800,000.00 4-A-4 1,781.47 0.00 1,554,558.11 0.00 333,929,726.15 4-A-5 25.50 0.00 22,254.08 0.00 4,861,000.00 5-A-1 953.88 0.00 832,379.45 0.00 198,240,087.10 15-PO 0.00 0.00 0.00 0.00 463,588.67 30-PO 0.00 0.00 0.00 0.00 502,163.09 15-AX 176.31 0.00 153,855.55 0.00 35,982,928.88 30-AX 191.21 0.00 166,858.02 0.00 35,740,154.89 B-1 71.02 0.00 61,972.16 0.00 14,151,473.69 B-2 22.60 0.00 19,718.02 0.00 4,502,650.93 B-3 12.91 0.00 11,268.06 0.00 2,573,085.92 B-4 9.68 0.00 8,449.95 0.00 1,929,565.01 B-5 6.45 0.00 5,631.85 0.00 1,286,044.11 B-6 6.46 0.00 5,637.35 0.00 1,287,301.22 Totals 6,826.00 0.00 5,956,558.57 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.

MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC.
(Exact name of registrant as specified in its charter)
Delaware	333-101254	06-1204982
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
1285 Avenue of the Americas New York, New York 10019
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (212) 713-2000

~~Item~~Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance 1-A-1 0.00524634 0.00000000 4.57808698 0.00000000 997.53445055 A-R 0.00000000 0.00000000 15.50000000 0.00000000 0.00000000 2-A-1 0.00476939 0.00000000 4.16189727 0.00000000 977.12835192 2-A-2 0.00476935 0.00000000 4.16189742 0.00000000 974.62387452 2-A-3 0.00429240 0.00000000 3.74570760 0.00000000 974.62387440 2-A-4 0.00763200 0.00000000 6.65903627 0.00000000 974.62387434 2-A-5 0.00476904 0.00000000 4.16189738 0.00000000 1000.00000000 3-A-1 0.00476950 0.00000000 4.16189750 0.00000000 969.78827900 4-A-1 0.00763083 0.00000000 6.65903583 0.00000000 981.16758750 4-A-2 0.00429233 0.00000000 3.74570767 0.00000000 981.16758733 4-A-3 0.00525000 0.00000000 4.57808750 0.00000000 1000.00000000 4-A-4 0.00524633 0.00000000 4.57808699 0.00000000 983.40443258 4-A-5 0.00524583 0.00000000 4.57808681 0.00000000 1000.00000000 5-A-1 0.00476940 0.00000000 4.16189725 0.00000000 991.20043550 15-PO 0.00000000 0.00000000 0.00000000 0.00000000 996.25505535 30-PO 0.00000000 0.00000000 0.00000000 0.00000000 997.62749050 15-AX 0.00476931 0.00000000 4.16189732 0.00000000 973.36271181 30-AX 0.00524623 0.00000000 4.57808709 0.00000000 980.60340008 B-1 0.00500705 0.00000000 4.36915962 0.00000000 997.70683094 B-2 0.00500776 0.00000000 4.36916020 0.00000000 997.70683138 B-3 0.00500582 0.00000000 4.36915859 0.00000000 997.70683211 B-4 0.00500517 0.00000000 4.36915719 0.00000000 997.70683040 B-5 0.00500388 0.00000000 4.36916214 0.00000000 997.70683476 B-6 0.00500674 0.00000000 4.36915815 0.00000000 997.70683428 (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.

~~Other~~Certificateholder ~~Events~~Component Statement Component Beginning Ending Beginning Ending Ending Pass-Through Notional Notional Component Component Component Class Rate Balance Balance Balance Balance Percentage 15-PO-2 0.00000% 0.00 0.00 214,929.42 214,155.52 99.63992831% 15-PO-5 0.00000% 0.00 0.00 250,401.89 249,433.14 99.61312193% 30-PO-1 0.00000% 0.00 0.00 94,874.17 94,770.59 99.89082381% 30-PO-4 0.00000% 0.00 0.00 408,483.14 407,392.50 99.73300244% 15-AX-2 5.00000% 27,153,430.14 26,336,229.08 0.00 0.00 96.99043157% 15-AX-3 5.00000% 1,434,758.85 1,350,477.64 0.00 0.00 94.12575779% 15-AX-5 5.00000% 8,379,457.75 8,296,222.15 0.00 0.00 99.00667081% 30-AX-1 5.50000% 11,589,676.96 11,569,071.89 0.00 0.00 99.82221187% 30-AX-4 5.50000% 24,857,427.84 24,171,083.00 0.00 0.00 97.23887425%

~~Master~~CERTIFICATEHOLDER ~~Asset~~ACCOUNT ~~Securitization~~STATEMENT ~~Transactions,~~CERTIFICATE ~~Inc.~~ACCOUNT ~~(the~~Beginning ~~“Company”)~~Balance ~~entered~~0.00 ~~into~~Deposits aPayments ~~Pooling~~of Interest and ~~Servicing~~Principal ~~Agreement dated as of May 1~~24,771,986.09 ~~2003 (the “Agreement”) among the Company~~Liquidations, inInsurance ~~its capacity as depositor (in such capacity~~Proceeds, ~~the~~Reserve ~~“Depositor”),~~Funds ~~UBS~~0.00 ~~Warburg~~Proceeds ~~Real~~from ~~Estate~~Repurchased ~~Securities~~Loans ~~Inc~~0.,00 asOther ~~transferor~~Amounts (inServicer ~~such capacity, the “Transferor”~~Advances), ~~Wells Fargo Bank Minnesota~~65, N919.~~A.,~~12 asRealized ~~master~~Loss ~~servicer and custodian~~ (~~in such capacity~~Gains, ~~the~~Subsequent ~~“Master~~Expenses ~~Servicer”~~& Recoveries), U0.S.00 ~~Bank~~Prepayment ~~National~~Penalties ~~Association,~~0.00 asTotal ~~custodian~~Deposits ~~(in such capacity~~24, “U837,905.S.21 ~~Bank”)~~Withdrawals ~~and~~Reimbursement ~~Deutsche~~for ~~Bank~~Servicer ~~National~~Advances ~~Trust~~0.00 ~~Company,~~Payment asof ~~trustee~~Service ~~(in~~Fee ~~such capacity~~272, ~~the “Trustee”)~~694. ~~The~~32 ~~Certificates~~Payment ~~were~~of ~~issued~~Interest onand ~~May~~Principal 2924, ~~2003~~565,210. ~~The~~89 ~~Pooling~~Total ~~and~~Withdrawals ~~Servicing~~(Pool ~~Agreement~~Distribution isAmount) ~~annexed~~24,837,905.21 ~~hereto~~Ending asBalance ~~Exhibit 99~~0.1.00

~~Item~~PREPAYMENT/CURTAILMENT ~~7. Financial~~INTEREST ~~Statements~~SHORTFALL Total Prepayment/Curtailment Interest Shortfall 6,826.00 ~~Pro~~Servicing ~~Forma~~Fee ~~Financial~~Support ~~Information~~0.00 ~~and~~Non-Supported ~~Exhibits~~Prepayment/Curtailment Interest Shortfall 6,826.00

~~(a)~~SERVICING FEES Gross Servicing Fee 271,524.44 Master Servicing Fee 1,169.88 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 272,694.32

~~Not~~LOAN ~~applicable~~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 19 0 0 0 19 10,835,391.58 0.00 0.00 0.00 10,835,391.58 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 19 0 0 0 19 10,835,391.58 0.00 0.00 0.00 10,835,391.58 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 0.753072% 0.000000% 0.000000% 0.000000% 0.753072% 0.851202% 0.000000% 0.000000% 0.000000% 0.851202% 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 0.753072% 0.000000% 0.000000% 0.000000% 0.753072% 0.851202% 0.000000% 0.000000% 0.000000% 0.851202%

~~(b)~~Delinquency Status By Groups DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 1 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 8 0 0 0 8 5,218,200.00 0.00 0.00 0.00 5,218,200.00 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 8 0 0 0 8 5,218,200.00 0.00 0.00 0.00 5,218,200.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 1.629328% 0.000000% 0.000000% 0.000000% 1.629328% 1.996640% 0.000000% 0.000000% 0.000000% 1.996640% 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 1.629328% 0.000000% 0.000000% 0.000000% 1.629328% 1.996640% 0.000000% 0.000000% 0.000000% 1.996640% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 2 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 1,327,150.00 0.00 0.00 0.00 1,327,150.00 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 1,327,150.00 0.00 0.00 0.00 1,327,150.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.382166% 0.000000% 0.000000% 0.000000% 0.382166% 0.332501% 0.000000% 0.000000% 0.000000% 0.332501% 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 0.382166% 0.000000% 0.000000% 0.000000% 0.382166% 0.332501% 0.000000% 0.000000% 0.000000% 0.332501% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 3 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 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 4 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 8 0 0 0 8 4,290,041.58 0.00 0.00 0.00 4,290,041.58 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 8 0 0 0 8 4,290,041.58 0.00 0.00 0.00 4,290,041.58 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.986436% 0.000000% 0.000000% 0.000000% 0.986436% 1.102272% 0.000000% 0.000000% 0.000000% 1.102272% 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 0.986436% 0.000000% 0.000000% 0.000000% 0.986436% 1.102272% 0.000000% 0.000000% 0.000000% 1.102272% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 5 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 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 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 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000%

~~Not~~OTHER ~~applicable~~INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 65,919.12

~~(c)~~CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 169,113.00 0.01311505% 169,113.00 0.01330709% Fraud 12,894,570.00 0.99999996% 12,894,570.00 1.01464266% Special Hazard 13,086,633.00 1.01489484% 13,086,633.00 1.02975564% Limit of Subordinate's Exposure to Certain Types of Losses

~~Exhibits:~~COLLATERAL STATEMENT Collateral Description Fixed 15 & 30 Year Weighted Average Gross Coupon 5.803446% Weighted Average Pass-Through Rate 5.549670% Weighted Average Maturity(Stepdown Calculation ) 269 Beginning Scheduled Collateral Loan Count 2,550 Number Of Loans Paid In Full 27 Ending Scheduled Collateral Loan Count 2,523 Beginning Scheduled Collateral Balance 1,289,457,048.62 Ending Scheduled Collateral Balance 1,270,848,396.49 Ending Actual Collateral Balance at 31-May-2003 1,272,952,558.04 Monthly P &I Constant 9,153,683.83 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Non-PO Optimal Amount 24,394,216.44 Class AP Deferred Amount 0.00 Ending Scheduled Balance for Premium Loans 1,270,848,396.49 Scheduled Principal 2,917,604.79 Unscheduled Principal 15,691,047.54

99Miscellaneous Reporting Group 1 Senior Prepayment % 100.000000% Group 2 Senior Prepayment % 100.000000% Group 3 Senior Prepayment % 100.000000% Group 4 Senior Prepayment % 100.000000% Group 5 Senior Prepayment % 100.000000% Group 1 Senior % 98.037443% Group 2 Senior % 97.999840% Group 3 Senior % 97.293214% Group 4 Senior % 98.047913% Group 5 Senior % 97.921286% Group 1 Junior % 1.962557% Group 2 Junior % 2.000160% Group 3 Junior % 2.706786% Group 4 Junior % 1.952087% Group 5 Junior % 2.078714%

~~The~~Group ~~Pooling~~Level ~~and~~Collateral ~~Servicing~~Statement ~~Agreement~~Group ~~dated~~Group as1 ofGroup ~~May~~2 Group 3 Collateral Description Fixed 30 Year Fixed 15 Year Fixed 15 Year Weighted Average Coupon Rate 5.991484 5.581899 5.598981 Weighted Average Net Rate 5.741484 5.331762 5.348982 Weighted Average Maturity 358 177 176 Beginning Loan Count 492 795 40 Loans Paid In Full 1 10 1 Ending Loan Count 491 785 39 Beginning Scheduled Balance 261,804,168.00 407,256,412.00 20,556,418.00 Ending scheduled Balance 261,166,216.38 398,103,135.56 19,950,144.94 Record Date 05/31/2003 05/31/2003 05/31/2003 Principal And Interest Constant 1,569,929.98 by3,345,194.08 ~~and~~171,239.43 ~~among~~Scheduled ~~the~~Principal ~~Company~~262,767.12 ~~the~~1,450,807.27 ~~Transferor~~75,326.94 ~~the~~Unscheduled ~~Master~~Principal ~~Servicer~~375,184.80 U7,702,469.S19 530,946.42 ~~Bank~~Scheduled ~~and~~Interest ~~the~~1,307,162.86 1,894,386.81 95,912.49 Servicing Fees 54,542.53 84,891.43 4,282.57 Master Servicing Fees 0.00 349.95 0.00 Trustee Fee 0.00 0.00 0.00 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 0.00 0.00 0.00 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 1,252,620.33 1,809,145.43 91,629.92 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.00 0.00 0.00 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 5.741484 5.330731 5.348981

~~SIGNATURES~~Group Level Collateral Statement Group Group 4 Group 5 Total Collateral Description d 30 Year Ratio Strip Fixed 15 Year Fixed 15 & 30 Year Weighted Average Coupon Rate 6.100668 5.449875 5.803446 Weighted Average Net Rate 5.842107 5.199753 5.550759 Weighted Average Maturity 357 177 269 Beginning Loan Count 825 398 2,550 Loans Paid In Full 14 1 27 Ending Loan Count 811 397 2,523 Beginning Scheduled Balance 395,343,966.00 204,496,085.00 1,289,457,049.00 Ending scheduled Balance 388,909,063.32 202,719,836.29 1,270,848,396.49 Record Date 05/31/2003 05/31/2003 05/31/2003 Principal And Interest Constant 2,398,414.50 1,668,905.84 9,153,683.83 Scheduled Principal 388,529.41 740,174.05 2,917,604.79 Unscheduled Principal 6,046,372.77 1,036,074.36 15,691,047.54 Scheduled Interest 2,009,885.09 928,731.79 6,236,079.04 Servicing Fees 85,183.65 42,624.26 271,524.44 Master Servicing Fees 650.59 169.34 1,169.88 Trustee Fee 0.00 0.00 0.00 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 0.00 0.00 0.00 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 1,924,050.85 885,938.19 5,963,384.72 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.00 0.00 0.00 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 5.840132 5.198759 5.549670

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, thereunto duly authorized.

MORTGAGE ASSET SECURITIZATION

TRANSACTIONS, INC.

By: /s/ Eric Daouphars______________

Name: Eric Daouphars

Title: Director

By: /s/ Saro Cutri__________________

Name: Saro Cutri

Title: Director

Dated: June 25, 2003

Exhibit Index

Exhibit Page

99.1

Pooling and Servicing Agreement dated as of May 1, 2003,

by and among the Company, the Transferor, the Master Servicer, U.S.

Bank and the Trustee. 5

Filing Compare · MORTGAGE ASSET SEC TRANS MASTR PASS THRU SER 2003-5