~~Mortgage~~SECURITIES ~~Asset~~AND ~~Securitization~~EXCHANGE Transactions, Inc. Mortgage Pass-Through Certificates Record Date: 10/31/04 Distribution Date: 11/26/04 MASTR Series: 2004-10 Contact: Customer Service - CTSLink Wells Fargo Bank, 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 57643MGV0 SEN 4.50000% 50,000,000.00 187,500.00 203,981.77 2-A-1 57643MGW8 SEN 5.00000% 67,729,000.00 282,204.17 280,569.70 2-A-2 57643MGX6 SEQ 5.00000% 10,000,000.00 41,666.67 51,412.99 2-A-3 57643MGY4 SEQ 5.00000% 2,411,000.00 10,045.83 0.00 3-A-1 57643MGZ1 SEN 5.50000% 75,500,000.00 346,041.67 3,217,843.25 4-A-1 57643MHA5 SEQ 5.25000% 37,000,000.00 161,875.00 400,239.99 4-A-2 57643MHB3 SEQ 8.00000% 3,700,000.00 24,666.67 40,024.00 4-A-3 57643MHC1 SEQ 5.50000% 3,955,000.00 18,127.08 0.00 4-A-4 57643MHD9 LOCK 5.50000% 5,100,000.00 23,375.00 0.00 5-A-1 57643MHE7 SEQ 2.34000% 11,322,000.00 22,077.90 124,778.54 5-A-2 57643MHF4 IO 5.66000% 0.00 53,402.10 0.00 5-A-3 57643MHG2 SEQ 5.00000% 33,966,000.00 141,525.00 374,335.62 5-A-4 57643MHH0 SEQ 5.75000% 6,153,000.00 29,483.13 0.00 5-A-5 57643MHJ6 SEQ 5.75000% 2,869,000.00 13,747.29 0.00 5-A-6 57643MHK3 LOCK 5.75000% 6,200,000.00 29,708.33 0.00 6-A-1 57643MHL1 SEN 6.00000% 47,086,000.00 235,430.00 1,228,960.37 15-PO 57643MHM9 PO 0.00000% 2,079,880.53 0.00 23,225.01 30-PO 57643MHN7 PO 0.00000% 783,616.81 0.00 9,820.58 15-AX 57643MHP2 IO 5.00000% 0.00 18,082.03 0.00 30-AX 57643MHQ0 IO 5.75000% 0.00 18,515.63 0.00 A-LR 57643MHR8 RES 4.50000% 50.00 0.19 50.00 A-UR 57643MHS6 RES 4.50000% 50.00 0.19 50.00 B-1 57643MHT4 SUB 5.33005% 4,878,000.00 21,666.65 12,642.11 B-2 57643MHU1 SUB 5.33005% 1,689,000.00 7,502.05 4,377.31 B-3 57643MHV9 SUB 5.33005% 938,000.00 4,166.32 2,430.98 B-4 57643MHW7 SUB 5.33005% 750,000.00 3,331.28 1,943.74 B-5 57643MHX5 SUB 5.33005% 751,000.00 3,335.72 1,946.34 B-6 57643MHY3 SUB 5.33005% 375,563.19 1,668.14 973.33 Totals 375,236,160.53 1,699,144.04 5,979,605.63COMMISSION

~~Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1-A-1 0.00 49~~Washington,~~796,018.23~~ ~~391,481~~D.~~77 0~~C.00 2-A-1 0.00 67,448,430.30 562,773.87 0.00 2-A-2 0.00 9,948,587.01 93,079.66 0.00 2-A-3 0.00 2,411,000.00 10,045.83 0.00 3-A-1 0.00 72,282,156.75 3,563,884.92 0.00 4-A-1 0.00 36,599,760.01 562,114.99 0.00 4-A-2 0.00 3,659,976.00 64,690.67 0.00 4-A-3 0.00 3,955,000.00 18,127.08 0.00 4-A-4 0.00 5,100,000.00 23,375.00 0.00 5-A-1 0.00 11,197,221.46 146,856.44 0.00 5-A-2 0.00 0.00 53,402.10 0.00 5-A-3 0.00 33,591,664.38 515,860.62 0.00 5-A-4 0.00 6,153,000.00 29,483.13 0.00 5-A-5 0.00 2,869,000.00 13,747.29 0.00 5-A-6 0.00 6,200,000.00 29,708.33 0.00 6-A-1 0.00 45,857,039.63 1,464,390.37 0.00 15-PO 0.00 2,056,655.52 23,225.01 0.00 30-PO 0.00 773,796.23 9,820.58 0.00 15-AX 0.00 0.00 18,082.03 0.00 30-AX 0.00 0.00 18,515.63 0.00 A-LR 0.00 0.00 50.19 0.00 A-UR 0.00 0.00 50.19 0.00 B-1 0.00 4,865,357.89 34,308.76 0.00 B-2 0.00 1,684,622.69 11,879.36 0.00 B-3 0.00 935,569.02 6,597.30 0.00 B-4 0.00 748,056.26 5,275.02 0.00 B-5 0.00 749,053.66 5,282.06 0.00 B-6 0.00 374,589.86 2,641.47 0.00 Totals 0.00 369,256,554.90 7,678,749.67 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee. 20549

~~Principal~~Form Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) 1-A-1 50,000,000.00 50,000,000.00 197,127.76 6,854.01 0.00 0.00 2-A-1 67,729,000.00 67,729,000.00 256,768.63 23,801.07 0.00 0.00 2-A-2 10,000,000.00 10,000,000.00 47,051.57 4,361.43 0.00 0.00 2-A-3 2,411,000.00 2,411,000.00 0.00 0.00 0.00 0.00 3-A-1 75,500,000.00 75,500,000.00 270,985.00 2,946,858.25 0.00 0.00 4-A-1 37,000,000.00 37,000,000.00 50,491.91 349,748.08 0.00 0.00 4-A-2 3,700,000.00 3,700,000.00 5,049.19 34,974.81 0.00 0.00 4-A-3 3,955,000.00 3,955,000.00 0.00 0.00 0.00 0.00 4-A-4 5,100,000.00 5,100,000.00 0.00 0.00 0.00 0.00 5-A-1 11,322,000.00 11,322,000.00 15,068.44 109,710.10 0.00 0.00 5-A-2 0.00 0.00 0.00 0.00 0.00 0.00 5-A-3 33,966,000.00 33,966,000.00 45,205.33 329,130.30 0.00 0.00 5-A-4 6,153,000.00 6,153,000.00 0.00 0.00 0.00 0.00 5-A-5 2,869,000.00 2,869,000.00 0.00 0.00 0.00 0.00 5-A-6 6,200,000.00 6,200,000.00 0.00 0.00 0.00 0.00 6-A-1 47,086,000.00 47,086,000.00 42,886.45 1,186,073.92 0.00 0.00 15-PO 2,079,880.53 2,079,880.53 8~~,055.00 15,170.02 0.00 0.00 30~~-PO 783,616.81 783,616.81 909.32 8,911.26 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 A-LR 50.00 50.00 48.32 1.68 0.00 0.00 A-UR 50.00 50.00 48.32 1.68 0.00 0.00 B-1 4,878,000.00 4,878,000.00 12,642.11 0.00 0.00 0.00 B-2 1,689,000.00 1,689,000.00 4,377.31 0.00 0.00 0.00 B-3 938,000.00 938,000.00 2,430.98 0.00 0.00 0.00 B-4 750,000.00 750,000.00 1,943.74 0.00 0.00 0.00 B-5 751,000.00 751,000.00 1,946.34 0.00 0.00 0.00 B-6 375,563.19 375,563.19 973.33 0.00 0.00 0.00 Totals 375,236,160.53 375,236,160.53 964,009.05 5,015,596.61 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.K

~~Principal~~CURRENT Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution 1-A-1 203,981.77 49,796,018.23 0.99592036 203,981.77 2-A-1 280,569.70 67,448,430.30 0.99585747 280,569.70 2-A-2 51,412.99 9,948,587.01 0.99485870 51,412.99 2-A-3 0.00 2,411,000.00 1.00000000 0.00 3-A-1 3,217,843.25 72,282,156.75 0.95737956 3,217,843.25 4-A-1 400,239.99 36,599,760.01 0.98918270 400,239.99 4-A-2 40,024.00 3,659,976.00 0.98918270 40,024.00 4-A-3 0.00 3,955,000.00 1.00000000 0.00 4-A-4 0.00 5,100,000.00 1.00000000 0.00 5-A-1 124,778.54 11,197,221.46 0.98897911 124,778.54 5-A-2 0.00 0.00 0.00000000 0.00 5-A-3 374,335.62 33,591,664.38 0.98897911 374,335.62 5-A-4 0.00 6,153,000.00 1.00000000 0.00 5-A-5 0.00 2,869,000.00 1.00000000 0.00 5-A-6 0.00 6,200,000.00 1.00000000 0.00 6-A-1 1,228,960.37 45,857,039.63 0.97389967 1,228,960.37 15-PO 23,225.01 2,056,655.52 0.98883349 23,225.01 30-PO 9,820.58 773,796.23 0.98746762 9,820.58 15-AX 0.00 0.00 0.00000000 0.00 30-AX 0.00 0.00 0.00000000 0.00 A-LR 50.00 0.00 0.00000000 50.00 A-UR 50.00 0.00 0.00000000 50.00 B-1 12,642.11 4,865,357.89 0.99740834 12,642.11 B-2 4,377.31 1,684,622.69 0.99740834 4,377.31 B-3 2,430.98 935,569.02 0.99740834 2,430.98 B-4 1,943.74 748,056.26 0.99740835 1,943.74 B-5 1,946.34 749,053.66 0.99740834 1,946.34 B-6 973.33 374,589.86 0.99740835 973.33 Totals 5,979,605.63 369,256,554.90 0.98406442 5,979,605.63REPORT

~~Principal~~Pursuant ~~Distribution~~to ~~Factors~~Section ~~Statement~~13 ~~Original~~or Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion 1-A-1 50,000,000.00 1000.00000000 3.94255520 0.13708020 0.00000000 2-A-1 67,729,000.00 1000.00000000 3.79111798 0.35141623 0.00000000 2-A-2 10,000,000.00 1000.00000000 4.70515700 0.43614300 0.00000000 2-A-3 2,411,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 3-A-1 75,500,000.00 1000.00000000 3.58920530 39.03123510 0.00000000 4-A-1 37,000,000.00 1000.00000000 1.36464622 9.45265081 0.00000000 4-A-2 3,700,000.00 1000.00000000 1.36464595 9.45265135 0.00000000 4-A-3 3,955,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 4-A-4 5,100,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 5-A-1 11,322,000.00 1000.00000000 1.33089913 9.68999293 0.00000000 5-A-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 5-A-3 33,966,000.00 1000.00000000 1.33089943 9.68999293 0.00000000 5-A-4 6,153,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 5-A-5 2,869,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 5-A-6 6,200,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 6-A-1 47,086,000.00 1000.00000000 0.91081107 25.18952385 0.00000000 15-PO 2,079,880.53 1000.00000000 3.87281860 7.29369778 0.00000000 30-PO 783,616.81 1000.00000000 1.16041411 11.37196125 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 A-LR 50.00 1000.00000000 966.40000000 33.60000000 0.00000000 A-UR 50.00 1000.00000000 966.40000000 33.60000000 0.00000000 B-1 4,878,000.00 1000.00000000 2.59165847 0.00000000 0.00000000 B-2 1,689,000.00 1000.00000000 2.59165779 0.00000000 0.00000000 B-3 938,000.00 1000.00000000 2.59166311 0.00000000 0.00000000 B-4 750,000.00 1000.00000000 2.59165333 0.00000000 0.00000000 B-5 751,000.00 1000.00000000 2.59166445 0.00000000 0.00000000 B-6 375,563.19 1000.00000000 2.59165442 0.00000000 0.00000000 (2d) ~~All~~of ~~Classes are per $1,000 denomination~~the

~~Principal~~Securities ~~Distribution~~Exchange ~~Factors~~Act ~~Statement~~of (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution 1-A-1 0.00000000 4.07963540 995.92036460 0.99592036 4.07963540 2-A-1 0.00000000 4.14253422 995.85746578 0.99585747 4.14253422 2-A-2 0.00000000 5.14129900 994.85870100 0.99485870 5.14129900 2-A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 3-A-1 0.00000000 42.62044040 957.37955960 0.95737956 42.62044040 4-A-1 0.00000000 10.81729703 989.18270297 0.98918270 10.81729703 4-A-2 0.00000000 10.81729730 989.18270270 0.98918270 10.81729730 4-A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 4-A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 5-A-1 0.00000000 11.02089207 988.97910793 0.98897911 11.02089207 5-A-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5-A-3 0.00000000 11.02089207 988.97910793 0.98897911 11.02089207 5-A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 5-A-5 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 5-A-6 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 6-A-1 0.00000000 26.10033492 973.89966508 0.97389967 26.10033492 15-PO 0.00000000 11.16651157 988.83348843 0.98883349 11.16651157 30-PO 0.00000000 12.53237536 987.46762464 0.98746762 12.53237536 15-AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 30-AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-LR 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 A-UR 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 B-1 0.00000000 2.59165847 997.40834153 0.99740834 2.59165847 B-2 0.00000000 2.59165779 997.40834221 0.99740834 2.59165779 B-3 0.00000000 2.59166311 997.40833689 0.99740834 2.59166311 B-4 0.00000000 2.59165333 997.40834667 0.99740835 2.59165333 B-5 0.00000000 2.59166445 997.40833555 0.99740834 2.59166445 B-6 0.00000000 2.59165442 997.40834558 0.99740835 2.59165442 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.1934

~~Interest~~Date ~~Distribution Statement Beginning Payment~~ of ~~Original~~Report: December Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall 1-A-1 50,000,000.00 4.50000% 50,000,000.00 187,500.00 0.00 0.00 2-A-1 67,729,000.00 5.00000% 67,729,000.00 282,204.17 0.00 0.00 2-A-2 10,000,000.00 5.00000% 10,000,000.00 41,666.67 0.00 0.00 2-A-3 2,411,000.00 5.00000% 2,411,000.00 10,045.83 0.00 0.00 3-A-1 75,500,000.00 5.50000% 75,500,000.00 346,041.67 0.00 0.00 4-A-1 37,000,000.00 5.25000% 37,000,000.00 161,875.00 0.00 0.00 4-A-2 3,700,000.00 8~~.00000% 3~~,~~700,000.00~~ ~~24,666.67~~2004 (date ~~0.00~~of ~~0.00~~earliest ~~4-A-3~~event ~~3,955,000.00~~reported) MORTGAGE ~~5.50000%~~ASSET ~~3,955,000.00~~SECURITIZATION 18TRANSACTIONS,~~127.08~~ 0INC.00 ~~0.00~~(as ~~4-A-4~~depositor ~~5,100,000.00~~under ~~5.50000%~~the ~~5,100,000.00~~Pooling ~~23,375.00~~and ~~0.00~~Servicing ~~0.00 5-A-1 11~~Agreement,~~322,000.00~~ ~~2.34000%~~relating ~~11,322,000.00~~to ~~22,077.90~~the ~~0.00~~MASTR ~~0.00~~Asset ~~5-A-2~~Securitization ~~0.00~~Trust ~~5.66000% 11,322,000.00 53,402.~~2004-10 ~~0.00~~Mortgage ~~0.00 5~~Pass-~~A-3~~Through 33Certificates,~~966,000.00~~ ~~5.00000%~~Series ~~33,966,000.00 141,525.00 0.00 0.00 5~~2004-A-4 6,153,000.00 5.75000% 6,153,000.00 29,483.13 0.00 0.00 5-A-5 2,869,000.00 5.75000% 2,869,000.00 13,747.29 0.00 0.00 5-A-6 6,200,000.00 5.75000% 6,200,000.00 29,708.33 0.00 0.00 6-A-1 47,086,000.00 6.00000% 47,086,000.00 235,430.00 0.00 0.00 15-PO 2,079,880.53 0.00000% 2,079,880.53 0.00 0.00 0.00 30-PO 783,616.81 0.00000% 783,616.81 0.00 0.00 0.00 15-AX 0.00 5.00000% 4,339,687.74 18,082.03 0.00 0.00 30-AX 0.00 5.75000% 3,864,132.06 18,515.63 0.00 0.00 A-LR 50.00 4.50000% 50.00 0.19 0.00 0.00 A-UR 50.00 4.50000% 50.00 0.19 0.00 0.00 B-1 4,878,000.00 5.33005% 4,878,000.00 21,666.65 0.00 0.00 B-2 1,689,000.00 5.33005% 1,689,000.00 7,502.05 0.00 0.00 B-3 938,000.00 5.33005% 938,000.00 4,166.32 0.00 0.00 B-4 750,000.00 5.33005% 750,000.00 3,331.28 0.00 0.00 B-5 751,000.00 5.33005% 751,000.00 3,335.72 0.00 0.00 B-6 375,563.19 5.33005% 375,563.19 1,668.14 0.00 0.00 Totals 375,236,160.53 1,699,144.04 0.00 0.0010)

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance 1-A-1 0.00 0.00 187,500.00 0.00 49,796,018.23 2-A-1 0.00 0.00 282,204.17 0.00 67,448,430.30 2-A-2 0.00 0.00 41,666.67 0.00 9,948,587.01 2-A-3 0.00 0.00 10,045.83 0.00 2,411,000.00 3-A-1 0.00 0.00 346,041.67 0.00 72,282,156.75 4-A-1 0.00 0.00 161,875.00 0.00 36,599,760.01 4-A-2 0.00 0.00 24,666.67 0.00 3,659,976.00 4-A-3 0.00 0.00 18,127.08 0.00 3,955,000.00 4-A-4 0.00 0.00 23,375.00 0.00 5,100,000.00 5-A-1 0.00 0.00 22,077.90 0.00 11,197,221.46 5-A-2 0.00 0.00 53,402.10 0.00 11,197,221.46 5-A-3 0.00 0.00 141,525.00 0.00 33,591,664.38 5-A-4 0.00 0.00 29,483.13 0.00 6,153,000.00 5-A-5 0.00 0.00 13,747.29 0.00 2,869,000.00 5-A-6 0.00 0.00 29,708.33 0.00 6,200,000.00 6-A-1 0.00 0.00 235,430.00 0.00 45,857,039.63 15-PO 0.00 0.00 0.00 0.00 2,056,655.52 30-PO 0.00 0.00 0.00 0.00 773,796.23 15-AX 0.00 0.00 18,082.03 0.00 4,197,464.01 30-AX 0.00 0.00 18,515.63 0.00 3,795,024.07 A-LR 0.00 0.00 0.19 0.00 0.00 A-UR 0.00 0.00 0.19 0.00 0.00 B-1 0.00 0.00 21,666.65 0.00 4,865,357.89 B-2 0.00 0.00 7,502.05 0.00 1,684,622.69 B-3 0.00 0.00 4,166.32 0.00 935,569.02 B-4 0.00 0.00 3,331.28 0.00 748,056.26 B-5 0.00 0.00 3,335.72 0.00 749,053.66 B-6 0.00 0.00 1,668.14 0.00 374,589.86 Totals 0.00 0.00 1,699,144.04 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, 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	333-106982	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

~~Interest~~Check ~~Distribution~~the ~~Factors~~appropriate ~~Statement~~box ~~Beginning~~below ~~Payment~~if ofthe ~~Original~~Form Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall 1-A-1 50,000,000.00 4.50000% 1000.00000000 3.75000000 0.00000000 0.00000000 2-A-1 67,729,000.00 5.00000% 1000.00000000 4.16666672 0.00000000 0.00000000 2-A-2 10,000,000.00 5.00000% 1000.00000000 4.16666700 0.00000000 0.00000000 2-A-3 2,411,000.00 5.00000% 1000.00000000 4.16666528 0.00000000 0.00000000 3-A-1 75,500,000.00 5.50000% 1000.00000000 4.58333338 0.00000000 0.00000000 4-A-1 37,000,000.00 5.25000% 1000.00000000 4.37500000 0.00000000 0.00000000 4-A-2 3,700,000.00 8~~.00000% 1000.00000000 6.66666757 0.00000000 0.00000000 4~~-~~A-3~~K ~~3,955,000.00~~filing ~~5.50000%~~is ~~1000.00000000~~intended ~~4.58333249~~to ~~0.00000000~~simultaneously ~~0.00000000~~satisfy ~~4-A-4~~the ~~5,100,000.00~~filing ~~5.50000%~~obligation ~~1000.00000000~~of ~~4.58333333~~the ~~0.00000000~~registrant ~~0.00000000~~under ~~5-A-1~~any ~~11,322,000.00~~of ~~2.34000%~~the ~~1000.00000000~~following 1.95000000 0.00000000 0.00000000 5-A-2 0.00 5.66000% 1000.00000000 4.71666667 0.00000000 0.00000000 5-A-3 33,966,000.00 5.00000% 1000.00000000 4.16666667 0.00000000 0.00000000 5-A-4 6,153,000.00 5.75000% 1000.00000000 4.79166748 0.00000000 0.00000000 5-A-5 2,869,000.00 5.75000% 1000.00000000 4.79166609 0.00000000 0.00000000 5-A-6 6,200,000.00 5.75000% 1000.00000000 4.79166613 0.00000000 0.00000000 6-A-1 47,086,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 15-PO 2,079,880.53 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 30-PO 783,616.81 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 15-AX 0.00 5.00000% 1000.00000000 4.16666615 0.00000000 0.00000000 30-AX 0.00 5.75000% 1000.00000000 4.79166595 0.00000000 0.00000000 A-LR 50.00 4.50000% 1000.00000000 3.80000000 0.00000000 0.00000000 A-UR 50.00 4.50000% 1000.00000000 3.80000000 0.00000000 0.00000000 B-1 4,878,000.00 5.33005% 1000.00000000 4.44170767 0.00000000 0.00000000 B-2 1,689,000.00 5.33005% 1000.00000000 4.44171107 0.00000000 0.00000000 B-3 938,000.00 5.33005% 1000.00000000 4.44170576 0.00000000 0.00000000 B-4 750,000.00 5.33005% 1000.00000000 4.44170667 0.00000000 0.00000000 B-5 751,000.00 5.33005% 1000.00000000 4.44170439 0.00000000 0.00000000 B-6 375,563.19 5.33005% 1000.00000000 4.44170261 0.00000000 0.00000000 (5) All Classes are per $1,000 denominationprovisions:

~~Interest~~Written ~~Distribution~~communications ~~Factors~~pursuant ~~Statement~~to ~~(continued)~~Rule ~~Remaining~~425 ~~Ending~~under ~~Non-Supported~~the ~~Total~~Securities ~~Unpaid~~Act ~~Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses~~ (6)17 ~~Distribution~~CFR ~~Shortfall Balance 1-A-1 0~~230.~~00000000~~425) ~~0.00000000~~Soliciting ~~3.75000000~~material ~~0.00000000~~pursuant ~~995.92036460~~to ~~2-A-1~~Rule ~~0.00000000 0.00000000 4.16666672 0.00000000 995.85746578 2~~14a-~~A-2~~12 ~~0.00000000~~under ~~0.00000000~~the ~~4.16666700~~Exchange ~~0.00000000~~Act ~~994.85870100~~(17 ~~2-A-3~~CFR 0240.~~00000000 0.00000000 4.16666528 0.00000000 1000.00000000 3~~14a-~~A-1~~12) ~~0.00000000 0.00000000 4.58333338 0.00000000 957.37955960 4~~Pre-~~A-1~~commencement ~~0.00000000~~communications ~~0.00000000~~pursuant ~~4.37500000~~to ~~0.00000000~~Rule ~~989.18270297 4~~14d-A-2(d) ~~0.00000000~~under ~~0.00000000~~the ~~6.66666757~~Exchange ~~0.00000000~~Act ~~989.18270270~~(17 ~~4-A-3~~CFR 0240.~~00000000 0.00000000 4.58333249 0.00000000 1000.00000000 4~~14d-~~A-4 0.00000000 0.00000000 4.58333333 0.00000000 1000.00000000 5-A-1 0.00000000 0.00000000 1.95000000 0.00000000 988.97910793 5-A-~~2(b)) ~~0.00000000 0.00000000 4.71666667 0.00000000 988.97910793 5~~Pre-~~A-3~~commencement ~~0.00000000~~communications ~~0.00000000~~pursuant ~~4.16666667~~to ~~0.00000000~~Rule ~~988.97910793 5~~13e-A-4(c) ~~0.00000000~~under ~~0.00000000~~the ~~4.79166748~~Exchange ~~0.00000000~~Act ~~1000.00000000~~(17 ~~5-A-5~~CFR 0240.~~00000000 0.00000000 4.79166609 0.00000000 1000.00000000 5~~13e-~~A-6 0.00000000 0.00000000~~ 4.79166613 0.00000000 1000.00000000 6-A-1 0.00000000 0.00000000 5.00000000 0.00000000 973.89966508 15-PO 0.00000000 0.00000000 0.00000000 0.00000000 988.83348843 30-PO 0.00000000 0.00000000 0.00000000 0.00000000 987.46762464 15-AX 0.00000000 0.00000000 4.16666615 0.00000000 967.22719732 30-AX 0.00000000 0.00000000 4.79166595 0.00000000 982.11552066 A-LR 0.00000000 0.00000000 3.80000000 0.00000000 0.00000000 A-UR 0.00000000 0.00000000 3.80000000 0.00000000 0.00000000 B-1 0.00000000 0.00000000 4.44170767 0.00000000 997.40834153 B-2 0.00000000 0.00000000 4.44171107 0.00000000 997.40834221 B-3 0.00000000 0.00000000 4.44170576 0.00000000 997.40833689 B-4 0.00000000 0.00000000 4.44170667 0.00000000 997.40834667 B-5 0.00000000 0.00000000 4.44170439 0.00000000 997.40833555 B-6 0.00000000 0.00000000 4.44170261 0.00000000 997.40834558 (6c) ~~Amount Does Not Include Excess Special Hazard, Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.~~)

~~Certificateholder~~Item ~~Component Statement Component Beginning Ending Beginning Ending Ending Pass-Through Notional Notional Component Component Component Class Rate Balance Balance Balance Balance Percentage 15-PO-1 0~~8.~~00000% 0~~01.00 Other 0.00 471,862.88 469,879.46 99.57966179% 15-PO-2 0.00000% 0.00 0.00 1,039,937.59 1,035,594.15 99.58233647% 15-PO-3 0.00000% 0.00 0.00 568,080.06 551,181.91 97.02539286% 30-PO-4 0.00000% 0.00 0.00 766,485.81 756,686.82 98.72156929% 30-PO-5 0.00000% 0.00 0.00 17,131.00 17,109.41 99.87397116% 15-AX-1 5.00000% 1,121,985.14 1,117,447.60 0.00 0.00 99.59557931% 15-AX-2 5.00000% 1,548,229.99 1,542,261.53 0.00 0.00 99.61449784% 15-AX-3 5.00000% 1,669,472.61 1,537,754.87 0.00 0.00 92.11021857% 30-AX-4 5.75000% 251,912.82 251,644.54 0.00 0.00 99.89350284% 30-AX-5 5.75000% 1,306,322.92 1,297,788.14 0.00 0.00 99.34665619% 30-AX-6 5.75000% 2,305,896.32 2,245,591.40 0.00 0.00 97.38475145%Events

~~CERTIFICATEHOLDER~~Master ~~ACCOUNT~~Asset ~~STATEMENT~~Securitization ~~CERTIFICATE~~Transactions, ~~ACCOUNT~~Inc. ~~Beginning~~(the ~~Balance~~“Company”) ~~0.00~~entered ~~Deposits~~into ~~Payments~~a ofPooling ~~Interest~~ and ~~Principal~~Servicing ~~7,671,424.50~~Agreement ~~Liquidations~~dated as of October 1, ~~Insurance~~2004 ~~Proceeds~~(the “Agreement”) among the Company, ~~Reserve~~in ~~Funds~~its ~~0.00~~capacity ~~Proceeds~~as ~~from~~depositor ~~Repurchased~~(in ~~Loans~~such 0capacity, the “Depositor”), UBS Real Estate Securities Inc.00, ~~Other~~as ~~Amounts~~transferor (~~Servicer~~in ~~Advances~~such capacity, the “Transferor”), 86Wells Fargo Bank,~~427~~ N.77A., ~~Realized~~as ~~Loss~~master servicer (~~Gains~~in such capacity, ~~Subsequent~~the ~~Expenses~~“Master &Servicer”), ~~Recoveries~~as trust administrator (in such capacity, the “Trust Administrator”) ~~0.00~~and ~~Prepayment~~as ~~Penalties~~a ~~0.00~~custodian ~~Total~~(in ~~Deposits~~such 7capacity,~~757~~ a “Custodian”),~~852~~ U.27S. ~~Withdrawals~~Bank ~~Reimbursement~~National ~~for~~Association, ~~Servicer~~as ~~Advances~~trustee ~~0.00~~(in ~~Payment~~such ofcapacity, ~~Service~~the ~~Fee~~“Trustee”) ~~79,102.60~~and ~~Payment~~as ofa ~~Interest~~custodian ~~and~~(in ~~Principal~~such 7capacity,~~678,749~~ a “Custodian”).67 The ~~Total~~Certificates ~~Withdrawals~~were ~~(Pool~~issued ~~Distribution~~on ~~Amount)~~October 728,~~757,852~~ 2004.27 The ~~Ending~~Pooling ~~Balance~~and 0Servicing Agreement is annexed hereto as Exhibit 99.001.

~~PREPAYMENT/CURTAILMENT~~Item ~~INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0~~9.~~00 Servicing Fee Support 0~~01.00 Financial ~~Non-Supported~~Statements ~~Prepayment/Curtailment~~and ~~Interest Shortfall 0~~Exhibits.00

~~SERVICING FEES Gross Servicing Fee 78,174.21 Master Servicing Fee 305.93 WMMSC Master Servicing Fee 622.46 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 79,102.60~~(a)

~~LOAN~~Not 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 0applicable.00 0.00 0.00 0.00 30 Days 25 0 0 0 25 12,589,668.30 0.00 0.00 0.00 12,589,668.30 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 25 0 0 0 25 12,589,668.30 0.00 0.00 0.00 12,589,668.30 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 3.392130% 0.000000% 0.000000% 0.000000% 3.392130% 3.402189% 0.000000% 0.000000% 0.000000% 3.402189% 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 3.392130% 0.000000% 0.000000% 0.000000% 3.392130% 3.402189% 0.000000% 0.000000% 0.000000% 3.402189%

Delinquency Status By Groups DELINQUENT BANKRUPTCY FORECLOSURE REO Total 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 5 0 0 0 5 2,331,227.79 0.00 0.00 0.00 2,331,227.79 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 5 0 0 0 5 2,331,227.79 0.00 0.00 0.00 2,331,227.79 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 5.434783% 0.000000% 0.000000% 0.000000% 5.434783% 4.485138% 0.000000% 0.000000% 0.000000% 4.485138% 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 5.434783% 0.000000% 0.000000% 0.000000% 5.434783% 4.485138% 0.000000% 0.000000% 0.000000% 4.485138% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 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 2 0 0 0 2 1,028,986.10 0.00 0.00 0.00 1,028,986.10 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 2 0 0 0 2 1,028,986.10 0.00 0.00 0.00 1,028,986.10 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 1.226994% 0.000000% 0.000000% 0.000000% 1.226994% 1.236982% 0.000000% 0.000000% 0.000000% 1.236982% 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 1.226994% 0.000000% 0.000000% 0.000000% 1.226994% 1.236982% 0.000000% 0.000000% 0.000000% 1.236982% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 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 7 0 0 0 7 3,277,848.91 0.00 0.00 0.00 3,277,848.91 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 7 0 0 0 7 3,277,848.91 0.00 0.00 0.00 3,277,848.91 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 4.666667% 0.000000% 0.000000% 0.000000% 4.666667% 4.382321% 0.000000% 0.000000% 0.000000% 4.382321% 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 4.666667% 0.000000% 0.000000% 0.000000% 4.666667% 4.382321% 0.000000% 0.000000% 0.000000% 4.382321% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 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 11 0 0 0 11 5,951,605.50 0.00 0.00 0.00 5,951,605.50 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 11 0 0 0 11 5,951,605.50 0.00 0.00 0.00 5,951,605.50 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 10.280374% 0.000000% 0.000000% 0.000000% 10.280374% 11.583026% 0.000000% 0.000000% 0.000000% 11.583026% 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 10.280374% 0.000000% 0.000000% 0.000000% 10.280374% 11.583026% 0.000000% 0.000000% 0.000000% 11.583026% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 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% DELINQUENT BANKRUPTCY FORECLOSURE REO Total 6 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%(b)

~~OTHER~~Not ~~INFORMATION Current Period Class A Insufficient Funds 0~~applicable.~~00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 86,427.77~~

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 100,000.00 0.02664988% 100,000.00 0.02708144% Fraud 3,752,361.00 0.99999984% 3,752,361.00 1.01619347% Special Hazard 3,752,361.00 0.99999984% 3,752,361.00 1.01619347% Limit of Subordinate's Exposure to Certain Types of Losses(c)

COLLATERAL STATEMENT Collateral Description Fixed 15 & 30 Year Weighted Average Gross Coupon 5.686808% Weighted Average Pass-Through Rate 5.433839% Weighted Average Maturity(Stepdown Calculation ) 253 Beginning Scheduled Collateral Loan Count 745 Number Of Loans Paid In Full 8 Ending Scheduled Collateral Loan Count 737 Beginning Scheduled Collateral Balance 375,236,160.53 Ending Scheduled Collateral Balance 369,256,554.89 Ending Actual Collateral Balance at 31-Oct-2004 370,046,109.64 Monthly P &I Constant 2,742,255.70 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 7,546,674.54 Class AP Deferred Amount 0.00 Scheduled Principal 964,009.05 Unscheduled Principal 5,015,596.59Exhibits:

~~Group Level Collateral Statement Group 1 2 3 Collateral Description Fixed 15 Year Fixed 15 Year Fixed 15 Year Weighted Average Coupon Rate 4~~99.818570 5.281315 5.817896 Weighted Average Net Rate 4.568570 5.031315 5.567896 Weighted Average Maturity 174 175 176 Beginning Loan Count 92 163 154 Loans Paid In Full 0 0 4 Ending Loan Count 92 163 150 Beginning Scheduled Balance 52,019,796.00 83,263,638.00 77,817,151.00 Ending scheduled Balance 51,807,625.20 82,919,412.26 74,576,132.21 Record Date 10/31/2004 10/31/2004 10/31/2004 Principal And Interest Constant 414,125.29 682,235.93 656,618.30 Scheduled Principal 205,241.10 315,784.67 279,341.55 Unscheduled Principal 6,929.48 28,441.02 2,961,677.63 Scheduled Interest 208,884.19 366,451.26 377,276.75 Servicing Fees 10,837.46 17,346.59 16,211.92 Master Servicing Fees 67.08 0.00 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 54.93 50.42 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 197,979.65 349,049.74 361,014.41 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 4.567022 5.030523 5.567119

~~Group~~ The ~~Level~~Pooling ~~Collateral~~and ~~Statement~~Servicing ~~Group~~Agreement 4dated 5as 6of ~~Collateral~~October Description Fixed 30 Year Fixed 30 Year Fixed 30 Year Weighted Average Coupon Rate 5.703526 6.124751 6.528941 Weighted Average Net Rate 5.453527 5.874751 6.278941 Weighted Average Maturity 354 356 357 Beginning Loan Count 108 127 101 Loans Paid In Full 1 ~~1 2 Ending Loan Count 107 126 99 Beginning Scheduled Balance 51~~,~~783,533.00~~ ~~62,023,806.00 48,328,236.00 Ending scheduled Balance 51,332,061.39 61,523,179.38 47,098,144.45 Record Date 10/31/~~2004 ~~10/31/2004 10/31/2004 Principal And Interest Constant 303~~,~~965.97~~ ~~378,348.81~~by ~~306,961.40~~and ~~Scheduled~~among ~~Principal~~the 57Company,~~842.01~~ ~~61,781.83~~the 44Transferor,~~017.89~~ ~~Unscheduled~~the ~~Principal~~Master ~~393~~Servicer,~~629.78~~ ~~438,844.76~~the ~~1,186,073.92~~Trust ~~Scheduled Interest 246~~Administrator,~~123.96~~ ~~316,566.98~~the ~~262,943.51~~Custodians ~~Servicing~~and ~~Fees~~the ~~10,788.22 12,921.63 10,068.39 Master Servicing Fees 22.18 131.00 85.67~~ 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 278.32 139.56 99.23 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 235,035.24 303,374.79 252,690.22 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 5.446563 5.869517 6.274350

Group Level Collateral Statement Group Total Collateral Description Fixed 15 & 30 Year Weighted Average Coupon Rate 5.686808 Weighted Average Net Rate 5.436808 Weighted Average Maturity 253.00 Record Date 10/31/2004 Principal And Interest Constant 2,742,255.70 Beginning Loan Count 745 Loans Paid In Full 8 Ending Loan Count 737 Beginning Scheduled Balance 375,236,160.00 Ending Scheduled Balance 369,256,554.89 Scheduled Principal 964,009.05 Unscheduled Principal 5,015,596.59 Scheduled Interest 1,778,246.65 Servicing Fee 78,174.21 Master Servicing Fee 305.93 Trustee Fee 0.00 Fry Amount 0.00 Special Hazard Fee 0.00 Other Fee 622.46 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 1,699,144.05 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalties 0.00 Special Servicing Fee 0.00 Pass-Through Rate 5.433839SIGNATURES

~~Miscellaneous~~Pursuant ~~Reporting~~to ~~Group~~the 1requirements ~~Senior~~of %the ~~96.997294%~~Securities ~~Senior~~Exchange ~~Prepayment~~Act %of ~~100.000000%~~1934, ~~Junior~~the %registrant ~~3.002706%~~has ~~Group~~duly 2caused ~~Senior~~this %report ~~97.465815%~~to ~~Senior~~be ~~Prepayment~~signed %on ~~100.000000%~~its ~~Junior~~behalf %by ~~2.534185%~~the ~~Group~~undersigned, 3thereunto ~~Senior~~duly ~~% 97~~authorized.~~735803% Senior Prepayment % 100.000000% Junior % 2.264197%~~

~~Miscellaneous~~MORTGAGE ~~Reporting~~ASSET ~~Group~~SECURITIZATION 4 Senior % 97.526224% Senior Prepayment % 100.000000% Junior % 2.473776% Group 5 Senior % 97.586268% Senior Prepayment % 100.000000% Junior % 2.413732% Group 6 Senior % 97.429585% Senior Prepayment % 100.000000% Junior % 2.570415%

TRANSACTIONS, INC.

By: /s/Peter Ma

Name:

Peter Ma

Title:

Director

By: /s/ Chris Paternoster

Name:

Chris Paternoster

Title:

Director

Dated: December 8, 2004_____

Exhibit Index

Exhibit

Page

99.1

Pooling and Servicing Agreement dated as of October 1, 2004,

by and among the Company, the Transferor, the Master Servicer, the Trust Administrator, the Custodians and the Trustee.

MCKEE NELSON LLP

5 Times Square, 35th Floor

New York, New York 10036

Telephone: (917) 777-4200

Facsimile: (917) 777-4299

December 8, 2004

BY MODEM

Securities and Exchange Commission

Judiciary Plaza

450 Fifth Street, N.W.

Washington, D.C. 20549

Re:

Mortgage Asset Securitization Transactions, Inc.

MASTR Asset Securitization Trust 2004-10, Mortgage

Pass-Through Certificates, Series 2004-10

Ladies and Gentlemen:

On behalf of Mortgage Asset Securitization Transactions, Inc. (the “Company”), we enclose herewith for filing, pursuant to the Securities and Exchange Act of 1934, as amended, the Company’s Current Report on Form 8-K, for filing of the Pooling and Servicing Agreement in connection with the above-referenced transaction.

Very truly yours,

/s/ Hays Ellisen

Hays Ellisen

Enclosure

Filing Compare · MASTR Asset Securitization Trust 2004-10