8-K 1 mst04008_aug.txt AUGUST 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): August 25, 2004 MASTR ASSET SECURITIZATION TRUST Mortgage Pass-Through Certificates, Series 2004-8 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-106982-34 54-2157847 Pooling and Servicing Agreement) (Commission 54-2157848 (State or other File Number) 54-2157849 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank, 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) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On August 25, 2004 a distribution was made to holders of MASTR ASSET SECURITIZATION TRUST, Mortgage Pass-Through Certificates, Series 2004-8 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2004-8 Trust, relating to the August 25, 2004 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 2004-8 Trust (Registrant) By: Wells Fargo Bank, N.A. as Master Servicer By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 8/27/04 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2004-8 Trust, relating to the August 25, 2004 distribution. EX-99.1

~~SECURITIES~~Mortgage ~~AND~~Asset ~~EXCHANGE~~Securitization ~~COMMISSION~~Transactions, Inc. Mortgage Pass-Through Certificates Record Date: 7/31/04 Distribution Date: 8/25/04 MASTR Series: 2004-8 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 57643MEE0 SEN 4.75000% 70,000,000.00 277,083.33 370,261.55 2-A-1 57643MEF7 SEN 5.00000% 178,371,000.00 743,212.50 702,411.66 3-A-1 57643MEG5 SEN 5.25000% 35,000,000.00 153,125.00 130,486.56 4-A-1 57643MEQ3 SEN 4.90458% 18,105,000.00 73,997.80 437,771.62 4-A-2 57643MER1 SEN 4.90458% 41,089,000.00 167,936.80 0.00 4-A-3 57643MFB5 SEN 4.90458% 46,536,000.00 190,199.49 0.00 PO 57643MEH3 PO 0.00000% 9,924,108.33 0.00 41,811.58 AX 57643MEJ9 IO 5.00000% 0.00 1,951.73 0.00 4-B-1 57643MES9 SUB 4.90458% 589,000.00 2,407.33 2,217.01 4-B-2 57643MET7 SUB 4.90458% 214,000.00 874.65 805.50 4-B-3 57643MEU4 SUB 4.90458% 193,000.00 788.82 726.46 4-B-4 57643MEV2 SUB 4.90458% 117,000.00 478.20 440.39 4-B-5 57643MEW0 SUB 4.90458% 118,000.00 482.28 444.15 4-B-6 57643MEX8 SUB 4.90458% 54,035.62 220.85 203.39 B-1 57643MEM2 SUB 4.92542% 1,482,000.00 6,082.89 5,626.78 B-2 57643MEN0 SUB 4.92542% 594,000.00 2,438.08 2,255.27 B-3 57643MEP5 SUB 4.92542% 444,000.00 1,822.40 1,685.76 B-4 57643MEY6 SUB 4.92542% 297,000.00 1,219.04 1,127.63 B-5 57643MEZ3 SUB 4.92542% 296,000.00 1,214.94 1,123.84 B-6 57643MFA7 SUB 4.92542% 149,276.51 612.71 566.71 A-LR 57643MEK6 SEN 4.75000% 50.00 0.20 50.00 A-UR 57643MEL4 SEN 4.75000% 50.00 0.20 50.00 Totals 403,572,520.46 1,626,149.24 1,700,065.86

~~Washington~~Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses 1-A-1 0.00 69,629,738.45 D647,344.C88 0. ~~20549~~00 2-A-1 0.00 177,668,588.34 1,445,624.16 0.00 3-A-1 0.00 34,869,513.44 283,611.56 0.00 4-A-1 0.00 17,667,228.38 511,769.42 0.00 4-A-2 0.00 41,089,000.00 167,936.80 0.00 4-A-3 0.00 46,536,000.00 190,199.49 0.00 PO 0.00 9,882,296.75 41,811.58 0.00 AX 0.00 0.00 1,951.73 0.00 4-B-1 0.00 586,782.99 4,624.34 0.00 4-B-2 0.00 213,194.50 1,680.15 0.00 4-B-3 0.00 192,273.54 1,515.28 0.00 4-B-4 0.00 116,559.61 918.59 0.00 4-B-5 0.00 117,555.85 926.43 0.00 4-B-6 0.00 53,832.23 424.24 0.00 B-1 0.00 1,476,373.22 11,709.67 0.00 B-2 0.00 591,744.73 4,693.35 0.00 B-3 0.00 442,314.24 3,508.16 0.00 B-4 0.00 295,872.37 2,346.67 0.00 B-5 0.00 294,876.16 2,338.78 0.00 B-6 0.00 148,709.80 1,179.42 0.00 A-LR 0.00 0.00 50.20 0.00 A-UR 0.00 0.00 50.20 0.00 Totals 0.00 401,872,454.60 3,326,215.10 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 70,000,000.00 70,000,000.00 269,495.14 100,766.41 0.00 0.00 2-A-1 178,371,000.00 178,371,000.00 672,956.06 29,455.59 0.00 0.00 3-A-1 35,000,000.00 35,000,000.00 129,569.68 916.88 0.00 0.00 4-A-1 18,105,000.00 18,105,000.00 397,969.95 39,801.67 0.00 0.00 4-A-2 41,089,000.00 41,089,000.00 0.00 0.00 0.00 0.00 4-A-3 46,536,000.00 46,536,000.00 0.00 0.00 0.00 0.00 PO 9,924,108.33 9,924,108.33 37,611.79 4,199.79 0.00 0.00 AX 0.00 0.00 0.00 0.00 0.00 0.00 4-B-1 589,000.00 589,000.00 2,217.01 0.00 0.00 0.00 4-B-2 214,000.00 214,000.00 805.50 0.00 0.00 0.00 4-B-3 193,000.00 193,000.00 726.46 0.00 0.00 0.00 4-B-4 117,000.00 117,000.00 440.39 0.00 0.00 0.00 4-B-5 118,000.00 118,000.00 444.15 0.00 0.00 0.00 4-B-6 54,035.62 54,035.62 203.39 0.00 0.00 0.00 B-1 1,482,000.00 1,482,000.00 5,626.78 0.00 0.00 0.00 B-2 594,000.00 594,000.00 2,255.27 0.00 0.00 0.00 B-3 444,000.00 444,000.00 1,685.76 0.00 0.00 0.00 B-4 297,000.00 297,000.00 1,127.63 0.00 0.00 0.00 B-5 296,000.00 296,000.00 1,123.84 0.00 0.00 0.00 B-6 149,276.51 149,276.51 566.71 0.00 0.00 0.00 A-LR 50.00 50.00 36.39 13.61 0.00 0.00 A-UR 50.00 50.00 36.39 13.61 0.00 0.00 Totals 403,572,520.46 403,572,520.46 1,524,898.29 175,167.56 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-1 370,261.55 69,629,738.45 0.99471055 370,261.55 2-A-1 702,411.66 177,668,588.34 0.99606207 702,411.66 3-A-1 130,486.56 34,869,513.44 0.99627181 130,486.56 4-A-1 437,771.62 17,667,228.38 0.97582040 437,771.62 4-A-2 0.00 41,089,000.00 1.00000000 0.00 4-A-3 0.00 46,536,000.00 1.00000000 0.00 PO 41,811.58 9,882,296.75 0.99578687 41,811.58 AX 0.00 0.00 0.00000000 0.00 4-B-1 2,217.01 586,782.99 0.99623598 2,217.01 4-B-2 805.50 213,194.50 0.99623598 805.50 4-B-3 726.46 192,273.54 0.99623596 726.46 4-B-4 440.39 116,559.61 0.99623598 440.39 4-B-5 444.15 117,555.85 0.99623602 444.15 4-B-6 203.39 53,832.23 0.99623600 203.39 B-1 5,626.78 1,476,373.22 0.99620325 5,626.78 B-2 2,255.27 591,744.73 0.99620325 2,255.27 B-3 1,685.76 442,314.24 0.99620324 1,685.76 B-4 1,127.63 295,872.37 0.99620327 1,127.63 B-5 1,123.84 294,876.16 0.99620324 1,123.84 B-6 566.71 148,709.80 0.99620362 566.71 A-LR 50.00 0.00 0.00000000 50.00 A-UR 50.00 0.00 0.00000000 50.00 Totals 1,700,065.86 401,872,454.60 0.99578746 1,700,065.86

~~Pursuant~~Principal toDistribution ~~Section~~Factors 13Statement orOriginal 15Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (d2) ofAmount ~~the~~Balance Distribution Distribution Accretion 1-A-1 70,000,000.00 1000.00000000 3.84993057 1.43952014 0.00000000 2-A-1 178,371,000.00 1000.00000000 3.77278851 0.16513665 0.00000000 3-A-1 35,000,000.00 1000.00000000 3.70199086 0.02619657 0.00000000 4-A-1 18,105,000.00 1000.00000000 21.98121790 2.19838001 0.00000000 4-A-2 41,089,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 4-A-3 46,536,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 PO 9,924,108.33 1000.00000000 3.78994150 0.42319066 0.00000000 AX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 4-B-1 589,000.00 1000.00000000 3.76402377 0.00000000 0.00000000 4-B-2 214,000.00 1000.00000000 3.76401869 0.00000000 0.00000000 4-B-3 193,000.00 1000.00000000 3.76404145 0.00000000 0.00000000 4-B-4 117,000.00 1000.00000000 3.76401709 0.00000000 0.00000000 4-B-5 118,000.00 1000.00000000 3.76398305 0.00000000 0.00000000 4-B-6 54,035.62 1000.00000000 3.76399864 0.00000000 0.00000000 B-1 1,482,000.00 1000.00000000 3.79674764 0.00000000 0.00000000 B-2 594,000.00 1000.00000000 3.79675084 0.00000000 0.00000000 B-3 444,000.00 1000.00000000 3.79675676 0.00000000 0.00000000 B-4 297,000.00 1000.00000000 3.79673401 0.00000000 0.00000000 B-5 296,000.00 1000.00000000 3.79675676 0.00000000 0.00000000 B-6 149,276.51 1000.00000000 3.79637761 0.00000000 0.00000000 A-LR 50.00 1000.00000000 727.80000000 272.20000000 0.00000000 A-UR 50.00 1000.00000000 727.80000000 272.20000000 0.00000000 (2) All 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 5.28945071 994.71054929 0.99471055 5.28945071 2-A-1 0.00000000 3.93792522 996.06207478 0.99606207 3.93792522 3-A-1 0.00000000 3.72818743 996.27181257 0.99627181 3.72818743 4-A-1 0.00000000 24.17959790 975.82040210 0.97582040 24.17959790 4-A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 4-A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 PO 0.00000000 4.21313216 995.78686784 0.99578687 4.21313216 AX 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4-B-1 0.00000000 3.76402377 996.23597623 0.99623598 3.76402377 4-B-2 0.00000000 3.76401869 996.23598131 0.99623598 3.76401869 4-B-3 0.00000000 3.76404145 996.23595855 0.99623596 3.76404145 4-B-4 0.00000000 3.76401709 996.23598291 0.99623598 3.76401709 4-B-5 0.00000000 3.76398305 996.23601695 0.99623602 3.76398305 4-B-6 0.00000000 3.76399864 996.23600136 0.99623600 3.76399864 B-1 0.00000000 3.79674764 996.20325236 0.99620325 3.79674764 B-2 0.00000000 3.79675084 996.20324916 0.99620325 3.79675084 B-3 0.00000000 3.79675676 996.20324324 0.99620324 3.79675676 B-4 0.00000000 3.79673401 996.20326599 0.99620327 3.79673401 B-5 0.00000000 3.79675676 996.20324324 0.99620324 3.79675676 B-6 0.00000000 3.79637761 996.20362239 0.99620362 3.79637761 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 (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.

~~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 70,000,000.00 4.75000% 70,000,000.00 277,083.33 0.00 0.00 2-A-1 178,371,000.00 5.00000% 178,371,000.00 743,212.50 0.00 0.00 3-A-1 35,000,000.00 5.25000% 35,000,000.00 153,125.00 0.00 0.00 4-A-1 18,105,000.00 4.90458% 18,105,000.00 73,997.80 0.00 0.00 4-A-2 41,089,000.00 4.90458% 41,089,000.00 167,936.80 0.00 0.00 4-A-3 46,536,000.00 4.90458% 46,536,000.00 190,199.49 0.00 0.00 PO 9,924,108.33 0.00000% 9,924,108.33 0.00 0.00 0.00 AX 0.00 5.00000% 468,414.64 1,951.73 0.00 0.00 4-B-1 589,000.00 4.90458% 589,000.00 2,407.33 0.00 0.00 4-B-2 214,000.00 4.90458% 214,000.00 874.65 0.00 0.00 4-B-3 193,000.00 4.90458% 193,000.00 788.82 0.00 0.00 4-B-4 117,000.00 4.90458% 117,000.00 478.20 0.00 0.00 4-B-5 118,000.00 4.90458% 118,000.00 482.28 0.00 0.00 4-B-6 54,035.62 4.90458% 54,035.62 220.85 0.00 0.00 B-1 1,482,000.00 4.92542% 1,482,000.00 6,082.89 0.00 0.00 B-2 594,000.00 4.92542% 594,000.00 2,438.08 0.00 0.00 B-3 444,000.00 4.92542% 444,000.00 1,822.40 0.00 0.00 B-4 297,000.00 4.92542% 297,000.00 1,219.04 0.00 0.00 B-5 296,000.00 4.92542% 296,000.00 1,214.94 0.00 0.00 B-6 149,276.51 4.92542% 149,276.51 612.71 0.00 0.00 A-LR 50.00 4.75000% 50.00 0.20 0.00 0.00 A-UR 50.00 4.75000% 50.00 0.20 0.00 0.00 Totals 403,572,520.46 1,626,149.24 0.00 0.00

~~Reported~~Interest Distribution Statement (continued)~~: August~~ Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance 1-A-1 0.00 0.00 277,083.33 0.00 69,629,738.45 2-A-1 0.00 0.00 743,212.50 0.00 177,668,588.34 3-A-1 0.00 0.00 153,125.00 0.00 34,869,513.44 4-A-1 0.00 0.00 73,997.80 0.00 17,667,228.38 ~~2004 MORTGAGE~~4-A-2 ~~ASSET~~0.00 ~~SECURITIZATION~~0.00 ~~TRANSACTIONS~~167,936.80 ~~INC~~0.00 ~~(as~~41,089,000.00 ~~depositor~~4-A-3 ~~under~~0.00 ~~the~~0.00 ~~Pooling~~190,199.49 ~~and~~0.00 ~~Servicing~~46,536,000.00 ~~Agreement~~PO 0.00 0.00 0.00 0.00 9,882,296.75 ~~relating~~AX to0.00 ~~the~~0.00 ~~MASTR~~1,951.73 ~~Asset~~0.00 ~~Securitization~~466,760.69 ~~Trust~~4-B-1 ~~2004~~0.00 0.00 2,407.33 0.00 586,782.99 4-8B-2 ~~Mortgage~~0.00 ~~Pass~~0.00 874.65 0.00 213,194.50 4-~~Through~~B-3 ~~Certificates~~0.00 0.00 788.82 0.00 192,273.54 ~~Series~~4-B-4 ~~2004~~0.00 0.00 478.20 0.00 116,559.61 4-8B-5 0.00 0.00 482.28 0.00 117,555.85 4-B-6 0.00 0.00 220.85 0.00 53,832.23 B-1 0.00 0.00 6,082.89 0.00 1,476,373.22 B-2 0.00 0.00 2,438.08 0.00 591,744.73 B-3 0.00 0.00 1,822.40 0.00 442,314.24 B-4 0.00 0.00 1,219.04 0.00 295,872.37 B-5 0.00 0.00 1,214.94 0.00 294,876.16 B-6 0.00 0.00 612.71 0.00 148,709.80 A-LR 0.00 0.00 0.20 0.00 0.00 A-UR 0.00 0.00 0.20 0.00 0.00 Totals 0.00 0.00 1,626,149.24 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

~~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 0.00000000 0.00000000 3.95833329 0.00000000 994.71054929 2-A-1 0.00000000 0.00000000 4.16666667 0.00000000 996.06207478 3-A-1 0.00000000 0.00000000 4.37500000 0.00000000 996.27181257 4-A-1 0.00000000 0.00000000 4.08714720 0.00000000 975.82040210 4-A-2 0.00000000 0.00000000 4.08714741 0.00000000 1000.00000000 4-A-3 0.00000000 0.00000000 4.08714737 0.00000000 1000.00000000 PO 0.00000000 0.00000000 0.00000000 0.00000000 995.78686784 AX 0.00000000 0.00000000 4.16667165 0.00000000 996.46904717 4-B-1 0.00000000 0.00000000 4.08714771 0.00000000 996.23597623 4-B-2 0.00000000 0.00000000 4.08714953 0.00000000 996.23598131 4-B-3 0.00000000 0.00000000 4.08715026 0.00000000 996.23595855 4-B-4 0.00000000 0.00000000 4.08717949 0.00000000 996.23598291 4-B-5 0.00000000 0.00000000 4.08711864 0.00000000 996.23601695 4-B-6 0.00000000 0.00000000 4.08711883 0.00000000 996.23600136 B-1 0.00000000 0.00000000 4.10451417 0.00000000 996.20325236 B-2 0.00000000 0.00000000 4.10451178 0.00000000 996.20324916 B-3 0.00000000 0.00000000 4.10450450 0.00000000 996.20324324 B-4 0.00000000 0.00000000 4.10451178 0.00000000 996.20326599 B-5 0.00000000 0.00000000 4.10452703 0.00000000 996.20324324 B-6 0.00000000 0.00000000 4.10453058 0.00000000 996.20362239 A-LR 0.00000000 0.00000000 4.00000000 0.00000000 0.00000000 A-UR 0.00000000 0.00000000 4.00000000 0.00000000 0.00000000 (6) Amount Does Not Include Excess Special Hazard, Bankruptcy,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 PO-1 0.00000% 0.00 0.00 2,310,662.98 2,299,013.45 99.49583604% PO-2 0.00000% 0.00 0.00 7,252,982.50 7,224,174.14 99.60280671% PO-3 0.00000% 0.00 0.00 360,462.85 359,109.15 99.62445506% AX-1 5.00000% 924.33 920.15 0.00 0.00 99.54778055% AX-2 5.00000% 467,490.31 465,840.54 0.00 0.00 99.64710071%

~~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~~3,388,869.69 ~~dated~~Liquidations, asInsurance ~~of July 1~~Proceeds, ~~2004~~Reserve ~~(the~~Funds ~~“Agreement”)~~0.00 ~~among~~Proceeds ~~the~~from ~~Company,~~Repurchased inLoans ~~its~~0.00 ~~capacity~~Other asAmounts ~~depositor~~ (inServicer ~~such capacity, the “Depositor”~~Advances), ~~UBS Real Estate Securities Inc.~~21,463.52 asRealized ~~transferor~~Loss (inGains, ~~such~~Subsequent ~~capacity,~~Expenses ~~the~~& ~~“Transferor”~~Recoveries), ~~Wells~~0.00 ~~Fargo~~Prepayment ~~Bank,~~Penalties N0.~~A.,~~00 asTotal ~~master~~Deposits ~~servicer (in such capacity~~3, ~~the “Master Servicer”)~~410,333.21 asWithdrawals ~~trust~~Reimbursement ~~administrator~~for ~~(in~~Servicer ~~such~~Advances ~~capacity,~~0.00 ~~the~~Payment ~~“Trust~~of ~~Administrator”)~~Service ~~and~~Fee ~~as a custodian (in such capacity~~84,118.11 aPayment ~~“Custodian”),~~of ~~Wachovia~~Interest ~~Bank,~~and ~~National~~Principal ~~Association~~3, ~~as trustee (in such capacity~~326, ~~the “Trustee”) and U~~215.S.10 ~~Bank~~Total ~~National~~Withdrawals ~~Association, as a custodian~~ (inPool ~~such~~Distribution ~~capacity, a “Custodian”~~Amount)~~. The~~ ~~Certificates were issued on July 29~~3, ~~2004~~410,333. ~~The~~21 ~~Pooling~~Ending ~~and~~Balance ~~Servicing Agreement is annexed hereto as Exhibit 99~~0.1.00

~~Item~~PREPAYMENT/CURTAILMENT 7INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0. ~~Financial~~00 ~~Statements,~~Servicing ~~Pro~~Fee ~~Forma~~Support ~~Financial~~0.00 ~~Information~~Non-Supported ~~and~~Prepayment/Curtailment ~~Exhibits~~Interest Shortfall 0.00

~~(a)~~SERVICING FEES Gross Servicing Fee 84,001.21 Master Servicing Fee 102.47 WMMSC Master Servicing Fee 14.43 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 84,118.11

~~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 6 0 0 0 6 2,711,436.73 0.00 0.00 0.00 2,711,436.73 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 6 0 0 0 6 2,711,436.73 0.00 0.00 0.00 2,711,436.73 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 0.769231% 0.000000% 0.000000% 0.000000% 0.769231% 0.672889% 0.000000% 0.000000% 0.000000% 0.672889% 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 0.769231% 0.000000% 0.000000% 0.000000% 0.769231% 0.672889% 0.000000% 0.000000% 0.000000% 0.672889%

~~(b)~~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 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 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 6 0 0 0 6 2,711,436.73 0.00 0.00 0.00 2,711,436.73 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 6 0 0 0 6 2,711,436.73 0.00 0.00 0.00 2,711,436.73 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 1.671309% 0.000000% 0.000000% 0.000000% 1.671309% 1.449001% 0.000000% 0.000000% 0.000000% 1.449001% 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 1.671309% 0.000000% 0.000000% 0.000000% 1.671309% 1.449001% 0.000000% 0.000000% 0.000000% 1.449001% 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 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 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 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 21,463.52

~~(c)~~CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 200,000.00 0.04955739% 0.00 0.00000000% Fraud 4,035,724.00 0.99999970% 0.00 0.00000000% Special Hazard 8,078,949.00 2.00185805% 0.00 0.00000000% Limit of Subordinate's Exposure to Certain Types of Losses

~~Exhibits:~~COLLATERAL STATEMENT Collateral Description Fixed 15 Year Ratio Strip Weighted Average Gross Coupon 5.085383% Weighted Average Pass-Through Rate 4.835263% Weighted Average Maturity(Stepdown Calculation ) 177 Beginning Scheduled Collateral Loan Count 780 Number Of Loans Paid In Full 0 Ending Scheduled Collateral Loan Count 780 Beginning Scheduled Collateral Balance 403,572,520.46 Ending Scheduled Collateral Balance 401,872,454.54 Ending Actual Collateral Balance at 31-Jul-2004 402,954,761.22 Monthly P &I Constant 3,235,165.72 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 3,206,726.84 Class AP Deferred Amount 0.00 Scheduled Principal 1,524,898.36 Unscheduled Principal 175,167.56

99Special Hazard - Groups 1, 2, 3 5,849,494.00 Special Hazard - Group 4 2,229,455.00 Fraud Coverage - Groups 1, 2, 3 2,965,574.00 Fraud Coverage - Group 4 1,070,150.00 Bankruptcy Coverage - Groups 1, 2, 3 100,000.00 Bankruptcy Coverage - Group 4 100,000.00

~~The~~Group ~~Pooling~~Level ~~and~~Collateral ~~Servicing~~Statement ~~Agreement~~Group ~~dated~~1 as2 of3 ~~July~~Collateral 1Description Fixed 15 Year Ratio Strip Fixed 15 Year Ratio Strip Fixed 15 Year Ratio Strip Weighted Average Coupon Rate 4.850895 5.056679 5.512485 Weighted Average Net Rate 4.602141 4.806679 5.262486 Weighted Average Maturity 177 177 177 Beginning Loan Count 140 359 72 Loans Paid In Full 0 0 0 Ending Loan Count 140 359 72 Beginning Scheduled Balance 73,566,971.00 187,347,063.00 35,643,451.00 Ending scheduled Balance 73,180,121.96 186,609,342.01 35,510,563.47 Record Date 07/31/2004 07/31/2004 07/31/2004 Principal And Interest Constant 580,715.97 by1,496,276.65 ~~and~~295,685.16 ~~among~~Scheduled ~~the~~Principal ~~Company~~283,327.95 ~~the~~706,815.07 ~~Transferor~~131,948.49 ~~the~~Unscheduled ~~Master~~Principal ~~Servicer~~103,520.74 ~~the~~30,905.76 ~~Trust~~939.39 ~~Administrator~~Scheduled Interest 297,388.02 ~~the~~789,461.58 ~~Custodians~~163,736.67 ~~and~~Servicing ~~the~~Fees 15,250.06 39,030.64 7,425.71 Master Servicing Fees 63.49 38.98 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 14.43 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 282,060.04 750,391.96 156,310.96 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 4.600870 4.806429 5.262485

~~SIGNATURES~~Group Level Collateral Statement Group 4 Total Collateral Description Fixed 15 Year d 15 Year Ratio Strip Weighted Average Coupon Rate 5.154578 5.085383 Weighted Average Net Rate 4.904578 4.835610 Weighted Average Maturity 177 177 Beginning Loan Count 209 780 Loans Paid In Full 0 0 Ending Loan Count 209 780 Beginning Scheduled Balance 107,015,036.00 403,572,521.00 Ending scheduled Balance 106,572,427.10 401,872,454.54 Record Date 07/31/2004 07/31/2004 Principal And Interest Constant 862,487.94 3,235,165.72 Scheduled Principal 402,806.85 1,524,898.36 Unscheduled Principal 39,801.67 175,167.56 Scheduled Interest 459,681.09 1,710,267.36 Servicing Fees 22,294.80 84,001.21 Master Servicing Fees 0.00 102.47 Trustee Fee 0.00 0.00 FRY Amount 0.00 0.00 Special Hazard Fee 0.00 0.00 Other Fee 0.00 14.43 Pool Insurance Fee 0.00 0.00 Spread Fee 1 0.00 0.00 Spread Fee 2 0.00 0.00 Spread Fee 3 0.00 0.00 Net Interest 437,386.29 1,626,149.25 Realized Loss Amount 0.00 0.00 Cumulative Realized Loss 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 Prepayment Penalties 0.00 0.00 Special Servicing Fee 0.00 0.00 Pass-Through Rate 4.904578 4.835263

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/ Peter Slagowitz

Name: Peter Slagowitz

Title: Managing Director

By: /s/ Peter Ma

Name: Peter Ma

Title: Director

Dated: August 17, 2004_____

Exhibit Index

Exhibit

Page

99.1

Pooling and Servicing Agreement dated as of July 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

August 17, 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 2004-8, Mortgage Pass-Through

Certificates, Series 2004-8

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 2004-8