8-K 1 csf04ar1_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 CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-AR1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-107055-18 54-2142321 Pooling and Servicing Agreement) (Commission 54-2142322 (State or other File Number) 54-2142324 jurisdiction 54-2142323 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 CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION, Mortgage-Backed P/T Certificates, Series 2004-AR1 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-AR1 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. CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-AR1 Trust (Registrant) By: Wells Fargo Bank, N.A. as Trust Administrator By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 8/27/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-AR1 Trust, relating to the August 25, 2004 distribution. EX-99.1

Credit Suisse First Boston Mortgage Securities Corp. Mortgage~~-Backed~~ Pass-Through Certificates Record Date: 47/3031/042004 Distribution Date: 58/25/042004 CSF Series: 2004-AR1 Contact: Customer Service - SecuritiesLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) 846-8130 Fax: (301) 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution I-A-1 22541Q4U3 SEN 3.~~72752~~73588% 5347,~~607~~955,~~465~~492.5475 ~~166~~149,~~518~~070.9676 425,~~355,317~~901.5913 AR 22541Q5D0 RES 3.~~73553~~73627% 0.00 0.00 0.00 AR-L 22541Q5E8 RES 3.~~73553~~73627% 0.00 0.00 0.00 II-A-1 22541Q4V1 SEN 4.~~83559~~82714% ~~126~~107,~~444~~933,~~509~~490.9835 ~~509~~433,~~528~~340.4890 116,~~949~~934,~~225~~624.3682 III-A-1 22541Q4W9 SEN 43.~~15245~~41035% 4946,~~172~~273,~~731~~121.7933 ~~170~~131,~~155~~330.9575 1,~~879~~065,~~070~~031.3644 IV-A-1 22541Q4X7 SEN 4.~~30993~~31044% 7670,~~580~~479,~~204~~766.7453 ~~275~~252,~~045~~737.8948 31,~~697~~571,~~102~~818.5542 V-A-1 22541Q4Y5 SEN 4.~~98635~~97918% ~~124~~111,~~539~~943,~~155~~937.7025 ~~517~~463,~~496~~547.2574 74,~~243~~241,~~223~~850.2472 VI-A-1 22541Q4Z2 SEN 1.~~53000~~88000% ~~132~~115,~~759~~127,~~193~~570.1782 ~~163~~180,~~625~~366.7153 46,~~936~~713,~~946~~845.3630 VI-A-2 22541Q6V9 SEN 1.~~49000~~84000% 2320,~~622~~485,~~632~~332.2489 2831,~~353~~410.7284 ~~878~~1,~~460~~194,634.2139 VI-A-3 22541Q6W7 SEN 1.~~30000~~65000% ~~119~~97,~~042~~545,~~835~~056.3325 ~~124~~134,~~664~~124.3045 68,~~019~~186,~~490~~017.4416 VI-A-4 22541Q6X5 SEN 12.~~65000~~00000% 42,827,000.00 5671,~~924~~378.2233 0.00 VI-M-1 22541Q5A6 MEZ 12.~~75000~~10000% 11,553,000.00 1620,~~286~~217.5275 0.00 VI-M-2 22541Q5B4 MEZ 23.~~70000~~05000% 7,109,055.00 1518,~~462~~068.1985 0.00 I-X 22541Q6K3 SEN 0.66000% 0.00 2926,~~484~~335.1162 0.00 C-B-1 22541Q5P3 SUB 4.~~65483~~56708% 11,~~161~~148,~~599~~828.0136 4342,~~296~~336.1576 4,~~186~~241.4870 C-B-2 22541Q5Q1 SUB 4.~~65483~~56708% 5,~~224~~218,~~195~~218.7140 2019,~~264~~815.8076 1,~~959~~985.4933 C-B-3 22541Q5R9 SUB 4.~~65483~~56708% 2,~~849~~846,~~833~~573.7206 1110,~~054~~809.5863 1,~~068~~083.9101 C-B-4 22541Q5F5 SUB 4.~~65483~~56708% 2,~~612~~609,~~097~~109.8520 109,~~132~~907.4088 ~~979~~992.7467 C-B-5 22541Q5G3 SUB 4.~~65483~~56708% 2,~~137~~135,~~625~~179.0123 8,~~291~~108.9117 ~~801~~812.7835 C-B-6 22541Q5H1 SUB 4.~~65483~~56708% 1,~~425~~423,~~300~~669.4366 5,~~528~~406.7827 ~~534~~541.6065 VI-X 22541Q5M0 OC 0.00000% 1,777,350.28 1,~~363~~084,~~104~~460.4946 0.00 Totals ~~794~~706,~~445~~391,~~785~~751.5036 3,~~535~~092,~~219~~774.4193 4029,~~968~~943,~~367~~380.1109

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A-1 0.00 4947,~~252~~929,~~147~~591.9563 4174,~~521,836~~971.5589 0.00 AR 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 II-A-1 0.00 ~~114~~100,~~495~~998,~~284~~865.6253 127,~~458~~367,~~753~~965.8472 0.00 III-A-1 0.00 4745,~~293~~208,~~661~~089.4389 21,~~049~~196,~~226~~362.3119 0.00 IV-A-1 0.00 7268,~~883~~907,~~102~~948.1912 31,~~972~~824,~~148~~555.4490 0.00 V-A-1 0.00 ~~117~~107,~~295~~702,~~932~~086.4653 74,~~760~~705,~~719~~398.4946 0.00 VI-A-1 0.00 ~~127~~108,~~822~~413,~~246~~725.8252 56,~~100~~894,~~572~~211.0783 0.00 VI-A-2 0.00 2219,~~744~~290,~~172~~698.0349 ~~906~~1,~~813~~226,045.9323 0.00 VI-A-3 0.00 ~~113~~89,~~023~~359,~~344~~039.9009 68,~~144~~320,~~154~~141.7461 0.00 VI-A-4 0.00 42,827,000.00 5671,~~924~~378.2233 0.00 VI-M-1 0.00 11,553,000.00 1620,~~286~~217.5275 0.00 VI-M-2 0.00 7,109,055.00 1518,~~462~~068.1985 0.00 I-X 0.00 0.00 2926,~~484~~335.1162 0.00 C-B-1 0.00 11,~~157~~144,~~412~~586.5366 4746,~~482~~578.6346 0.00 C-B-2 0.00 5,~~222~~216,~~236~~233.2206 2221,~~224~~801.2909 0.00 C-B-3 0.00 2,~~848~~845,~~764~~490.8104 1211,~~123~~892.4964 0.00 C-B-4 0.00 2,~~611~~608,~~118~~116.1153 1110,~~112~~900.1455 0.00 C-B-5 0.00 2,~~136~~134,~~823~~366.2387 98,~~093~~920.6952 0.00 C-B-6 0.00 1,~~424~~423,~~765~~128.8301 65,~~063~~947.3892 0.00 VI-X 0.00 1,777,350.28 1,~~363~~084,~~104~~460.4946 0.00 Totals 0.00 ~~753~~676,~~477~~448,~~418~~371.4125 4433,~~503~~036,~~586~~155.5202 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) I-A-1 55,507,000.00 5347,~~607~~955,~~465~~492.5475 2018,~~270~~509.8541 47,~~335,046~~391.7472 0.00 0.00 AR 50.00 0.00 0.00 0.00 0.00 0.00 AR-L 50.00 0.00 0.00 0.00 0.00 0.00 II-A-1 138,555,000.00 ~~126~~107,~~444~~933,~~509~~490.9835 4944,~~706~~035.2548 116,~~899~~890,~~519~~589.1134 0.00 0.00 III-A-1 50,929,000.00 4946,~~172~~273,~~731~~121.7933 0.00 1,~~879~~065,~~070~~031.3644 0.00 0.00 IV-A-1 77,727,000.00 7670,~~580~~479,~~204~~766.7453 3532,~~156~~064.7222 31,~~661~~539,~~945~~754.8320 0.00 0.00 V-A-1 127,340,000.00 ~~124~~111,~~539~~943,~~155~~937.7025 5650,~~423~~957.3563 74,~~186~~190,~~799~~893.8909 0.00 0.00 VI-A-1 140,500,000.00 ~~132~~115,~~759~~127,~~193~~570.1782 0.00 46,~~936~~713,~~946~~845.3630 0.00 0.00 VI-A-2 25,000,000.00 2320,~~622~~485,~~632~~332.2489 0.00 ~~878~~1,~~460~~194,634.2139 0.00 0.00 VI-A-3 128,481,000.00 ~~119~~97,~~042~~545,~~835~~056.3325 0.00 68,~~019~~186,~~490~~017.4416 0.00 0.00 VI-A-4 42,827,000.00 42,827,000.00 0.00 0.00 0.00 0.00 VI-M-1 11,553,000.00 11,553,000.00 0.00 0.00 0.00 0.00 VI-M-2 7,109,055.00 7,109,055.00 0.00 0.00 0.00 0.00 I-X 0.00 0.00 0.00 0.00 0.00 0.00 C-B-1 11,174,000.00 11,~~161~~148,~~599~~828.0136 4,~~186~~241.4870 0.00 0.00 0.00 C-B-2 5,230,000.00 5,~~224~~218,~~195~~218.7140 1,~~959~~985.4933 0.00 0.00 0.00 C-B-3 2,853,000.00 2,~~849~~846,~~833~~573.7206 1,~~068~~083.9101 0.00 0.00 0.00 C-B-4 2,615,000.00 2,~~612~~609,~~097~~109.8520 ~~979~~992.7467 0.00 0.00 0.00 C-B-5 2,140,000.00 2,~~137~~135,~~625~~179.0123 ~~801~~812.7835 0.00 0.00 0.00 C-B-6 1,426,884.00 1,~~425~~423,~~300~~669.4366 ~~534~~541.6065 0.00 0.00 0.00 VI-X 0.00 1,777,350.28 0.00 0.00 0.00 0.00 Totals 830,967,039.00 ~~794~~706,~~445~~391,~~785~~751.5036 ~~171~~155,~~088~~223.1745 4029,~~797~~788,~~278~~156.9464 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution I-A-1 425,~~355,317~~901.5913 4947,~~252~~929,~~147~~591.9563 0.~~88731418~~86348734 425,~~355,317~~901.5913 AR 0.00 0.00 0.00000000 0.00 AR-L 0.00 0.00 0.00000000 0.00 II-A-1 116,~~949~~934,~~225~~624.3682 ~~114~~100,~~495~~998,~~284~~865.6253 0.~~82635260~~72894421 116,~~949~~934,~~225~~624.3682 III-A-1 1,~~879~~065,~~070~~031.3644 4745,~~293~~208,~~661~~089.4389 0.~~92861948~~88766891 1,~~879~~065,~~070~~031.3644 IV-A-1 31,~~697~~571,~~102~~818.5542 7268,~~883~~907,~~102~~948.1912 0.~~93768063~~88653812 31,~~697~~571,~~102~~818.5542 V-A-1 74,~~243~~241,~~223~~850.2472 ~~117~~107,~~295~~702,~~932~~086.4653 0.~~92112402~~84578362 74,~~243~~241,~~223~~850.2472 VI-A-1 46,~~936~~713,~~946~~845.3630 ~~127~~108,~~822~~413,~~246~~725.8252 0.~~90976688~~77162794 46,~~936~~713,~~946~~845.3630 VI-A-2 ~~878~~1,~~460~~194,634.2139 2219,~~744~~290,~~172~~698.0349 0.~~90976688~~77162794 ~~878~~1,~~460~~194,634.2139 VI-A-3 68,~~019~~186,~~490~~017.4416 ~~113~~89,~~023~~359,~~344~~039.9009 0.~~87968918~~69550392 68,~~019~~186,~~490~~017.4416 VI-A-4 0.00 42,827,000.00 1.00000000 0.00 VI-M-1 0.00 11,553,000.00 1.00000000 0.00 VI-M-2 0.00 7,109,055.00 1.00000000 0.00 I-X 0.00 0.00 0.00000000 0.00 C-B-1 4,~~186~~241.4870 11,~~157~~144,~~412~~586.5366 0.~~99851553~~99736770 4,~~186~~241.4870 C-B-2 1,~~959~~985.4933 5,~~222~~216,~~236~~233.2206 0.~~99851553~~99736770 1,~~959~~985.4933 C-B-3 1,~~068~~083.9101 2,~~848~~845,~~764~~490.8104 0.~~99851553~~99736770 1,~~068~~083.9101 C-B-4 ~~979~~992.7467 2,~~611~~608,~~118~~116.1153 0.~~99851553~~99736770 ~~979~~992.7467 C-B-5 ~~801~~812.7835 2,~~136~~134,~~823~~366.2387 0.~~99851553~~99736770 ~~801~~812.7835 C-B-6 ~~534~~541.6065 1,~~424~~423,~~765~~128.8301 0.~~99851553~~99736770 ~~534~~541.6065 VI-X 0.00 1,777,350.28 0.00000000 0.00 Totals 4029,~~968~~943,~~367~~380.1109 ~~753~~676,~~477~~448,~~418~~371.4125 0.~~90674766~~81404958 4029,~~968~~943,~~367~~380.1109

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A-1 55,507,000.00 ~~965~~863.~~77847010~~95396527 0.~~36519448~~33346082 780.~~09909993~~13316735 0.00000000 AR 50.00 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 50.00 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 138,555,000.00 ~~912~~778.~~59434867~~99383169 0.~~35874743~~31781949 8549.~~88300032~~73179849 0.00000000 III-A-1 50,929,000.00 ~~965~~908.~~51536040~~58099177 0.00000000 3620.~~89588172~~91208231 0.00000000 IV-A-1 77,727,000.00 ~~985~~906.~~24585717~~76041183 0.~~45231027~~41252358 4719.~~11291868~~80977267 0.00000000 V-A-1 127,340,000.00 ~~978~~879.~~00499215~~09484255 0.~~44309212~~40016986 5632.~~43788197~~91104987 0.00000000 VI-A-1 140,500,000.00 ~~944~~819.~~90528947~~41331544 0.00000000 3547.~~13840826~~78537580 0.00000000 VI-A-2 25,000,000.00 ~~944~~819.~~90528960~~41331560 0.00000000 3547.~~13840840~~78537560 0.00000000 VI-A-3 128,481,000.00 ~~926~~759.~~54038597~~21775399 0.00000000 4663.~~85121100~~71383442 0.00000000 VI-A-4 42,827,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 VI-M-1 11,553,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 VI-M-2 7,109,055.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 C-B-1 11,174,000.00 ~~998~~997.~~89019241~~74730267 0.~~37466261~~37960444 0.00000000 0.00000000 C-B-2 5,230,000.00 ~~998~~997.~~89019312~~74730402 0.~~37466348~~37960421 0.00000000 0.00000000 C-B-3 2,853,000.00 ~~998~~997.~~89019278~~74730459 0.~~37466176~~37960393 0.00000000 0.00000000 C-B-4 2,615,000.00 ~~998~~997.~~89019120~~74730402 0.~~37466157~~37960612 0.00000000 0.00000000 C-B-5 2,140,000.00 ~~998~~997.~~89019159~~74730374 0.~~37466355~~37960280 0.00000000 0.00000000 C-B-6 1,426,884.00 ~~998~~997.~~89019009~~74730111 0.~~37466255~~37960339 0.00000000 0.00000000 VI-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 (2) Per $1,000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution I-A-1 0.00000000 780.~~46429441~~46662817 ~~887~~863.~~31417569~~48733727 0.~~88731418~~86348734 780.~~46429441~~46662817 AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 0.00000000 8650.~~24174775~~04961799 ~~826~~728.~~35260092~~94421371 0.~~82635260~~72894421 8650.~~24174775~~04961799 III-A-1 0.00000000 3620.~~89588172~~91208231 ~~928~~887.~~61947869~~66890946 0.~~92861948~~88766891 3620.~~89588172~~91208231 IV-A-1 0.00000000 4720.~~56522894~~22229624 ~~937~~886.~~68062822~~53811571 0.~~93768063~~88653812 4720.~~56522894~~22229624 V-A-1 0.00000000 5633.~~88097409~~31121973 ~~921~~845.~~12401806~~78362282 0.~~92112402~~84578362 5633.~~88097409~~31121973 VI-A-1 0.00000000 3547.~~13840826~~78537580 ~~909~~771.~~76688128~~62793964 0.~~90976688~~77162794 3547.~~13840826~~78537580 VI-A-2 0.00000000 3547.~~13840840~~78537560 ~~909~~771.~~76688120~~62793960 0.~~90976688~~77162794 3547.~~13840840~~78537560 VI-A-3 0.00000000 4663.~~85121100~~71383442 ~~879~~695.~~68917505~~50391957 0.~~87968918~~69550392 4663.~~85121100~~71383442 VI-A-4 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 VI-M-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 VI-M-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 I-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 C-B-1 0.00000000 0.~~37466261~~37960444 ~~998~~997.~~51552980~~36769823 0.~~99851553~~99736770 0.~~37466261~~37960444 C-B-2 0.00000000 0.~~37466348~~37960421 ~~998~~997.~~51552964~~36769790 0.~~99851553~~99736770 0.~~37466348~~37960421 C-B-3 0.00000000 0.~~37466176~~37960393 ~~998~~997.~~51553102~~36769716 0.~~99851553~~99736770 0.~~37466176~~37960393 C-B-4 0.00000000 0.~~37466157~~37960612 ~~998~~997.~~51552964~~36769790 0.~~99851553~~99736770 0.~~37466157~~37960612 C-B-5 0.00000000 0.~~37466355~~37960280 ~~998~~997.~~51552804~~36769626 0.~~99851553~~99736770 0.~~37466355~~37960280 C-B-6 0.00000000 0.~~37466255~~37960339 ~~998~~997.~~51552754~~36769772 0.~~99851553~~99736770 0.~~37466255~~37960339 VI-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (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.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall I-A-1 55,507,000.00 3.~~72752~~73588% 5347,~~607~~955,~~465~~492.5475 ~~166~~149,~~518~~296.9668 0.00 0.00 AR 50.00 3.~~73553~~73627% 0.00 0.00 0.00 0.00 AR-L 50.00 3.~~73553~~73627% 0.00 0.00 0.00 0.00 II-A-1 138,555,000.00 4.~~83559~~82714% ~~126~~107,~~444~~933,~~509~~490.9835 ~~509~~434,~~528~~174.4869 0.00 0.00 III-A-1 50,929,000.00 43.~~15245~~41035% 4946,~~172~~273,~~731~~121.7933 ~~170~~131,~~155~~506.9534 0.00 0.00 IV-A-1 77,727,000.00 4.~~30993~~31044% 7670,~~580~~479,~~204~~766.7453 ~~275~~253,~~045~~165.8980 0.00 0.00 V-A-1 127,340,000.00 4.~~98635~~97918% ~~124~~111,~~539~~943,~~155~~937.7025 ~~517~~464,~~496~~490.2569 0.00 0.00 VI-A-1 140,500,000.00 1.~~53000~~88000% ~~132~~115,~~759~~127,~~193~~570.1782 ~~163~~180,~~625~~366.7153 0.00 0.00 VI-A-2 25,000,000.00 1.~~49000~~84000% 2320,~~622~~485,~~632~~332.2489 2831,~~353~~410.7284 0.00 0.00 VI-A-3 128,481,000.00 1.~~30000~~65000% ~~119~~97,~~042~~545,~~835~~056.3325 ~~124~~134,~~664~~124.3045 0.00 0.00 VI-A-4 42,827,000.00 12.~~65000~~00000% 42,827,000.00 5671,~~924~~378.2233 0.00 0.00 VI-M-1 11,553,000.00 12.~~75000~~10000% 11,553,000.00 1620,~~286~~217.5275 0.00 0.00 VI-M-2 7,109,055.00 23.~~70000~~05000% 7,109,055.00 1518,~~462~~068.1985 0.00 0.00 I-X 0.00 0.66000% 5347,~~607~~955,~~465~~492.5475 2926,~~484~~375.1152 0.00 0.00 C-B-1 11,174,000.00 4.~~65483~~56708% 11,~~161~~148,~~599~~828.0136 4342,~~296~~431.1535 0.00 0.00 C-B-2 5,230,000.00 4.~~65483~~56708% 5,~~224~~218,~~195~~218.7140 2019,~~264~~860.8003 0.00 0.00 C-B-3 2,853,000.00 4.~~65483~~56708% 2,~~849~~846,~~833~~573.7206 1110,~~054~~833.5878 0.00 0.00 C-B-4 2,615,000.00 4.~~65483~~56708% 2,~~612~~609,~~097~~109.8520 109,~~132~~930.4002 0.00 0.00 C-B-5 2,140,000.00 4.~~65483~~56708% 2,~~137~~135,~~625~~179.0123 8,~~291~~126.9128 0.00 0.00 C-B-6 1,426,884.00 4.~~65483~~56708% 1,~~425~~423,~~300~~669.4366 5,~~528~~418.7835 0.00 0.00 VI-X 0.00 0.00000% ~~338~~296,~~691~~424,~~066~~365.0223 0.00 0.00 0.00 Totals 830,967,039.00 2,~~172~~011,~~114~~176.9228 0.00 0.00

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance I-A-1 0225.0086 0.00 ~~166~~149,~~518~~070.9676 0.00 4947,~~252~~929,~~147~~591.9563 AR 0.00 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 0.00 II-A-1 0833.0069 0.00 ~~509~~433,~~528~~340.4890 0.00 ~~114~~100,~~495~~998,~~284~~865.6253 III-A-1 0175.0062 0.00 ~~170~~131,~~155~~330.9575 0.00 4745,~~293~~208,~~661~~089.4389 IV-A-1 0428.0023 0.00 ~~275~~252,~~045~~737.8948 0.00 7268,~~883~~907,~~102~~948.1912 V-A-1 0950.0062 0.00 ~~517~~463,~~496~~547.2574 0.00 ~~117~~107,~~295~~702,~~932~~086.4653 VI-A-1 0.00 0.00 ~~163~~180,~~625~~366.7153 0.00 ~~127~~108,~~822~~413,~~246~~725.8252 VI-A-2 0.00 0.00 2831,~~353~~410.7284 0.00 2219,~~744~~290,~~172~~698.0349 VI-A-3 0.00 0.00 ~~124~~134,~~664~~124.3045 0.00 ~~113~~89,~~023~~359,~~344~~039.9009 VI-A-4 0.00 0.00 5671,~~924~~378.2233 0.00 42,827,000.00 VI-M-1 0.00 0.00 1620,~~286~~217.5275 0.00 11,553,000.00 VI-M-2 0.00 0.00 1518,~~462~~068.1985 0.00 7,109,055.00 I-X 039.0090 0.00 2926,~~484~~335.1162 0.00 4947,~~252~~929,~~147~~591.9563 C-B-1 094.0080 0.00 4342,~~296~~336.1576 0.00 11,~~157~~144,~~412~~586.5366 C-B-2 044.0037 0.00 2019,~~264~~815.8076 0.00 5,~~222~~216,~~236~~233.2206 C-B-3 024.0021 0.00 1110,~~054~~809.5863 0.00 2,~~848~~845,~~764~~490.8104 C-B-4 022.0019 0.00 109,~~132~~907.4088 0.00 2,~~611~~608,~~118~~116.1153 C-B-5 018.0016 0.00 8,~~291~~108.9117 0.00 2,~~136~~134,~~823~~366.2387 C-B-6 012.0011 0.00 5,~~528~~406.7827 0.00 1,~~424~~423,~~765~~128.8301 VI-X 0.00 0.00 1,~~363~~084,~~104~~460.4946 0.00 ~~326~~280,~~856~~329,~~169~~868.0238 Totals 02,869.0076 0.00 3,~~535~~092,~~219~~774.4193 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.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall I-A-1 55,507,000.00 3.~~72752~~73588% ~~965~~863.~~77847010~~95396527 2.~~99996325~~68969103 0.00000000 0.00000000 AR 50.00 3.~~73553~~73627% 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 50.00 3.~~73553~~73627% 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 138,555,000.00 4.~~83559~~82714% ~~912~~778.~~59434867~~99383169 3.~~67744564~~13359092 0.00000000 0.00000000 III-A-1 50,929,000.00 43.~~15245~~41035% ~~965~~908.~~51536040~~58099177 32.~~34104243~~58215044 0.00000000 0.00000000 IV-A-1 77,727,000.00 4.~~30993~~31044% ~~985~~906.~~24585717~~76041183 3.~~53861451~~25711529 0.00000000 0.00000000 V-A-1 127,340,000.00 4.~~98635~~97918% ~~978~~879.~~00499215~~09484255 43.~~06389391~~64764167 0.00000000 0.00000000 VI-A-1 140,500,000.00 1.~~53000~~88000% ~~944~~819.~~90528947~~41331544 1.~~16459580~~28374754 0.00000000 0.00000000 VI-A-2 25,000,000.00 1.~~49000~~84000% ~~944~~819.~~90528960~~41331560 1.~~13414880~~25643360 0.00000000 0.00000000 VI-A-3 128,481,000.00 1.~~30000~~65000% ~~926~~759.~~54038597~~21775399 01.~~97029366~~04392439 0.00000000 0.00000000 VI-A-4 42,827,000.00 12.~~65000~~00000% 1000.00000000 1.~~32916665~~66666659 0.00000000 0.00000000 VI-M-1 11,553,000.00 12.~~75000~~10000% 1000.00000000 1.~~40972215~~75000000 0.00000000 0.00000000 VI-M-2 7,109,055.00 23.~~70000~~05000% 1000.00000000 2.~~17499935~~54166693 0.00000000 0.00000000 I-X 0.00 0.66000% ~~965~~863.~~77847010~~95396527 0.~~53117823~~47517466 0.00000000 0.00000000 C-B-1 11,174,000.00 4.~~65483~~56708% ~~998~~997.~~89019241~~74730267 3.~~87472257~~79732862 0.00000000 0.00000000 C-B-2 5,230,000.00 4.~~65483~~56708% ~~998~~997.~~89019312~~74730402 3.~~87472275~~79732887 0.00000000 0.00000000 C-B-3 2,853,000.00 4.~~65483~~56708% ~~998~~997.~~89019278~~74730459 3.~~87472135~~79732913 0.00000000 0.00000000 C-B-4 2,615,000.00 4.~~65483~~56708% ~~998~~997.~~89019120~~74730402 3.~~87472275~~79733078 0.00000000 0.00000000 C-B-5 2,140,000.00 4.~~65483~~56708% ~~998~~997.~~89019159~~74730374 3.~~87472430~~79732710 0.00000000 0.00000000 C-B-6 1,426,884.00 4.~~65483~~56708% ~~998~~997.~~89019009~~74730111 3.~~87472282~~79733041 0.00000000 0.00000000 VI-X 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 (5) Per $1,000 demonimation

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance I-A-1 0.~~00000000~~00406904 0.00000000 2.~~99996325~~68562091 0.00000000 ~~887~~863.~~31417569~~48733727 AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 0.~~00000000~~00601703 0.00000000 3.~~67744564~~12757317 0.00000000 ~~826~~728.~~35260092~~94421371 III-A-1 0.~~00000000~~00344833 0.00000000 32.~~34104243~~57870270 0.00000000 ~~928~~887.~~61947869~~66890946 IV-A-1 0.~~00000000~~00550941 0.00000000 3.~~53861451~~25160472 0.00000000 ~~937~~886.~~68062822~~53811571 V-A-1 0.~~00000000~~00746521 0.00000000 43.~~06389391~~64023669 0.00000000 ~~921~~845.~~12401806~~78362282 VI-A-1 0.00000000 0.00000000 1.~~16459580~~28374754 0.00000000 ~~909~~771.~~76688128~~62793964 VI-A-2 0.00000000 0.00000000 1.~~13414880~~25643360 0.00000000 ~~909~~771.~~76688120~~62793960 VI-A-3 0.00000000 0.00000000 01.~~97029366~~04392439 0.00000000 ~~879~~695.~~68917505~~50391957 VI-A-4 0.00000000 0.00000000 1.~~32916665~~66666659 0.00000000 1000.00000000 VI-M-1 0.00000000 0.00000000 1.~~40972215~~75000000 0.00000000 1000.00000000 VI-M-2 0.00000000 0.00000000 2.~~17499935~~54166693 0.00000000 1000.00000000 I-X 0.~~00000000~~00071883 0.00000000 0.~~53117823~~47445583 0.00000000 ~~887~~863.~~31417569~~48733727 C-B-1 0.~~00000000~~00848398 0.00000000 3.~~87472257~~78886343 0.00000000 ~~998~~997.~~51552980~~36769823 C-B-2 0.~~00000000~~00848375 0.00000000 3.~~87472275~~78886424 0.00000000 ~~998~~997.~~51552964~~36769790 C-B-3 0.~~00000000~~00848580 0.00000000 3.~~87472135~~78886435 0.00000000 ~~998~~997.~~51553102~~36769716 C-B-4 0.~~00000000~~00848566 0.00000000 3.~~87472275~~78886424 0.00000000 ~~998~~997.~~51552964~~36769790 C-B-5 0.~~00000000~~00848598 0.00000000 3.~~87472430~~78886449 0.00000000 ~~998~~997.~~51552804~~36769626 C-B-6 0.~~00000000~~00848702 0.00000000 3.~~87472282~~78886441 0.00000000 ~~998~~997.~~51552754~~36769772 VI-X 0.00000000 0.00000000 0.00000000 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.

CERTIFICATEHOLDER ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 4433,~~718~~219,~~271~~596.5750 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 3449,~~892~~607.3052 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 4433,~~753~~269,~~163~~204.8702 Withdrawals Reimbursement for Servicer Advances 3139,~~484~~048.3651 Payment of Service Fee ~~218~~194,~~092~~000.9949 Payment of Interest and Principal 4433,~~503~~036,~~586~~155.5202 Total Withdrawals (Pool Distribution Amount) 4433,~~753~~269,~~163~~204.8702 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0.00 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 02,869.0076

SERVICING FEES Gross Servicing Fee ~~206~~183,~~259~~284.5293 External MS Fee 65,~~685~~877.8021 PMI Fee 54,~~147~~838.6735 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee ~~218~~194,~~092~~000.9949

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 1311 0 0 0 1311 3,~~910~~565,~~574~~554.0665 0.00 0.00 0.00 3,~~910~~565,~~574~~554.0665 60 Days 610 0 0 0 610 1,~~687~~819,~~337~~158.0490 0.00 0.00 0.00 1,~~687~~819,~~337~~158.0490 90 Days 08 0 0 0 08 02,014,757.0005 0.00 0.00 0.00 02,014,757.0005 120 Days 01 0 0 0 01 0223,933.0065 0.00 0.00 0.00 0223,933.0065 150 Days 02 01 0 0 03 0601,592.0074 093,042.0013 0.00 0.00 0694,634.0087 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 1932 01 0 0 1933 58,~~597~~224,~~911~~996.1099 093,042.0013 0.00 0.00 58,~~597~~318,~~911~~039.1012 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.~~428054~~396969% 0.000000% 0.000000% 0.000000% 0.~~428054~~396969% 0.~~518799~~526872% 0.000000% 0.000000% 0.000000% 0.~~518799~~526872% 60 Days 0.~~197563~~360881% 0.000000% 0.000000% 0.000000% 0.~~197563~~360881% 0.~~223852~~268812% 0.000000% 0.000000% 0.000000% 0.~~223852~~268812% 90 Days 0.~~000000~~288704% 0.000000% 0.000000% 0.000000% 0.~~000000~~288704% 0.~~000000~~297715% 0.000000% 0.000000% 0.000000% 0.~~000000~~297715% 120 Days 0.~~000000~~036088% 0.000000% 0.000000% 0.000000% 0.~~000000~~036088% 0.~~000000~~033090% 0.000000% 0.000000% 0.000000% 0.~~000000~~033090% 150 Days 0.~~000000~~072176% 0.~~000000~~036088% 0.000000% 0.000000% 0.~~000000~~108264% 0.~~000000~~088896% 0.~~000000~~013749% 0.000000% 0.000000% 0.~~000000~~102644% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 01.~~625617~~154818% 0.~~000000~~036088% 0.000000% 0.000000% 01.~~625617~~190906% 01.~~742650~~215384% 0.~~000000~~013749% 0.000000% 0.000000% 01.~~742650~~229132%

Delinquency Status By Groups DELINQUENT BANKRUPTCY FORECLOSURE REO Total G1 30Y Jumbo A Arm 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 02 0 0 0 02 01,215,030.0017 0.00 0.00 0.00 01,215,030.0017 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 02 0 0 0 02 01,215,030.0017 0.00 0.00 0.00 01,215,030.0017 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 02.~~000000~~040816% 0.000000% 0.000000% 0.000000% 02.~~000000~~040816% 02.~~000000~~378806% 0.000000% 0.000000% 0.000000% 02.~~000000~~378806% 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 02.~~000000~~040816% 0.000000% 0.000000% 0.000000% 02.~~000000~~040816% 02.~~000000~~378806% 0.000000% 0.000000% 0.000000% 02.~~000000~~378806% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G2 30Y Jumbo A Arm 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 G3 30Y Jumbo A Arm 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 01 0 0 0 01 0510,000.00 0.00 0.00 0.00 0510,000.00 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 01 0 0 0 01 0510,000.00 0.00 0.00 0.00 0510,000.00 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~000000~~636943% 0.000000% 0.000000% 0.000000% 0.~~000000~~636943% 01.~~000000~~060543% 0.000000% 0.000000% 0.000000% 01.~~000000~~060543% 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~~636943% 0.000000% 0.000000% 0.000000% 0.~~000000~~636943% 01.~~000000~~060543% 0.000000% 0.000000% 0.000000% 01.~~000000~~060543% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G4 30Y Jumbo A Arm 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 02 0 0 0 02 0448,279.0043 0.00 0.00 0.00 0448,279.0043 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 02 0 0 0 02 0448,279.0043 0.00 0.00 0.00 0448,279.0043 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~000000~~477327% 0.000000% 0.000000% 0.000000% 0.~~000000~~477327% 0.~~000000~~611469% 0.000000% 0.000000% 0.000000% 0.~~000000~~611469% 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~~477327% 0.000000% 0.000000% 0.000000% 0.~~000000~~477327% 0.~~000000~~611469% 0.000000% 0.000000% 0.000000% 0.~~000000~~611469% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G5 30Y Jumbo A Arm 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 10 0 0 0 10 ~~278,505~~0.00 0.00 0.00 0.00 ~~278,505~~0.00 60 Days 10 0 0 0 10 ~~167,586~~0.0200 0.00 0.00 0.00 ~~167,586~~0.0200 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 20 0 0 0 20 ~~446,091~~0.0200 0.00 0.00 0.00 ~~446,091~~0.0200 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~147929~~000000% 0.000000% 0.000000% 0.000000% 0.~~147929~~000000% 0.~~223669~~000000% 0.000000% 0.000000% 0.000000% 0.~~223669~~000000% 60 Days 0.~~147929~~000000% 0.000000% 0.000000% 0.000000% 0.~~147929~~000000% 0.~~134589~~000000% 0.000000% 0.000000% 0.000000% 0.~~134589~~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.~~295858~~000000% 0.000000% 0.000000% 0.000000% 0.~~295858~~000000% 0.~~358258~~000000% 0.000000% 0.000000% 0.000000% 0.~~358258~~000000% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G6 30Y Alt A Arm 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 126 0 0 0 126 31,~~632~~392,~~069~~245.0605 0.00 0.00 0.00 31,~~632~~392,~~069~~245.0605 60 Days 510 0 0 0 510 1,~~519~~819,~~751~~158.0290 0.00 0.00 0.00 1,~~519~~819,~~751~~158.0290 90 Days 08 0 0 0 08 02,014,757.0005 0.00 0.00 0.00 02,014,757.0005 120 Days 01 0 0 0 01 0223,933.0065 0.00 0.00 0.00 0223,933.0065 150 Days 02 01 0 0 03 0601,592.0074 093,042.0013 0.00 0.00 0694,634.0087 180 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 1727 01 0 0 1728 56,~~151~~051,~~820~~687.0839 093,042.0013 0.00 0.00 56,~~151~~144,~~820~~729.0852 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~852878~~484653% 0.000000% 0.000000% 0.000000% 0.~~852878~~484653% 10.~~110584~~496327% 0.000000% 0.000000% 0.000000% 10.~~110584~~496327% 60 Days 0.~~355366~~807754% 0.000000% 0.000000% 0.000000% 0.~~355366~~807754% 0.~~464697~~648519% 0.000000% 0.000000% 0.000000% 0.~~464697~~648519% 90 Days 0.~~000000~~646204% 0.000000% 0.000000% 0.000000% 0.~~000000~~646204% 0.~~000000~~718248% 0.000000% 0.000000% 0.000000% 0.~~000000~~718248% 120 Days 0.~~000000~~080775% 0.000000% 0.000000% 0.000000% 0.~~000000~~080775% 0.~~000000~~079831% 0.000000% 0.000000% 0.000000% 0.~~000000~~079831% 150 Days 0.~~000000~~161551% 0.~~000000~~080775% 0.000000% 0.000000% 0.~~000000~~242326% 0.~~000000~~214464% 0.~~000000~~033169% 0.000000% 0.000000% 0.~~000000~~247633% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 12.~~208244~~180937% 0.~~000000~~080775% 0.000000% 0.000000% 12.~~208244~~261712% 12.~~575282~~157389% 0.~~000000~~033169% 0.000000% 0.000000% 12.~~575282~~190558%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 3449,~~892~~607.3052

CREDIT ENHANCEMENT Original $ Original % Current $ Current % Bankruptcy 181,349.00 0.02182385% 181,349.00 0.~~02406827~~02680899% Fraud 16,495,703.10 1.98512123% 9,509,940.00 1.~~26214001~~40586339% Special Hazard 4,754,970.00 0.57222125% 4,754,970.00 0.~~63107001~~70293169% Limit of Subordinate's Exposure to Certain Types of Losses

COLLATERAL STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 5.~~669329~~595320% Weighted Average Net Coupon 5.~~357777~~283960% Weighted Average Pass-Through Rate 5.~~339903~~253926% Weighted Average Maturity(Stepdown Calculation ) ~~354~~351 Beginning Scheduled Collateral Loan Count 32,~~167~~874 Number Of Loans Paid In Full ~~130~~103 Ending Scheduled Collateral Loan Count 32,~~037~~771 Beginning Scheduled Collateral Balance ~~794~~706,~~445~~391,~~786~~752.3520 Ending Scheduled Collateral Balance ~~753~~676,~~477~~448,~~419~~372.2511 Ending Actual Collateral Balance at 3031-~~Apr~~Jul-2004 ~~753~~676,~~774~~740,~~639~~734.8369 Monthly P &I Constant 43,~~154~~652,~~696~~379.61 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Ending Scheduled Balance for Premium Loans ~~753~~676,~~477~~448,~~419~~372.2511 Scheduled Principal ~~401~~358,~~384~~639.2480 Unscheduled Principal 4029,~~566~~584,~~982~~740.8629

Group Level Collateral Statement Group G1 30Y Jumbo A Arm G2 30Y Jumbo A Arm G3 30Y Jumbo A Arm Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 4.~~775397~~781542 5.~~230435~~221753 43.~~417529~~675419 Weighted Average Net Rate 4.~~418747~~426906 4.~~879785~~872347 43.~~152447~~410351 Weighted Average Maturity ~~354~~351 ~~254~~251 ~~354~~351 Beginning Loan Count ~~109~~98 ~~275~~241 ~~169~~160 Loans Paid In Full 80 2112 63 Ending Loan Count ~~101~~98 ~~254~~229 ~~163~~157 Beginning Scheduled Balance 5651,~~741~~085,~~143~~634.6022 ~~134~~115,~~267~~746,~~460~~800.6000 5249,~~051~~151,~~270~~660.5105 Ending scheduled Balance 5251,~~384~~058,~~641~~524.0695 ~~122~~108,~~315~~808,~~159~~987.9845 5048,~~172~~086,~~200~~628.1561 Record Date 0407/3031/2004 0407/3031/2004 0407/3031/2004 Principal And Interest Constant ~~247~~223,~~257~~274.0530 ~~638~~550,~~012~~890.5190 ~~191~~150,~~615~~544.0113 Scheduled Principal 2119,~~455~~717.8055 5247,~~781~~223.5121 0.00 Unscheduled Principal 47,~~335,046~~391.7472 116,~~899~~890,~~519~~589.1134 1,~~879~~065,~~070~~031.3644 Scheduled Interest ~~225~~203,~~801~~556.2575 ~~585~~503,~~231~~667.0069 ~~191~~150,~~615~~544.0113 Servicing Fees 1615,~~863~~097.9532 3933,~~234~~702.0019 1110,~~498~~857.2212 Master Servicing Fees 0.00 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 ~~530~~469.9836 2,~~706~~431.9183 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 ~~208~~187,~~406~~990.3207 ~~543~~467,~~290~~533.0967 ~~180~~139,~~116~~687.7901 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.~~407518~~415881 4.~~855593~~847136 43.~~152447~~410352

Group Level Collateral Statement Group G4 30Y Jumbo A Arm G5 30Y Jumbo A Arm G6 30Y Alt A Arm Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 4.~~687173~~686758 5.~~355529~~347819 6.~~542304~~528700 Weighted Average Net Rate 4.~~317651~~317681 54.~~001083~~993746 6.~~277205~~263720 Weighted Average Maturity ~~354~~351 ~~354~~351 ~~354~~351 Beginning Loan Count ~~453~~426 ~~708~~650 1,~~453~~299 Loans Paid In Full 177 3220 4661 Ending Loan Count ~~436~~419 ~~676~~630 1,~~407~~238 Beginning Scheduled Balance 8074,~~967~~861,~~538~~078.5947 ~~131~~119,~~727~~122,~~307~~214.0323 ~~338~~296,~~691~~424,~~066~~365.0223 Ending scheduled Balance 7773,~~268~~287,~~421~~266.8981 ~~124~~114,~~480~~877,~~827~~095.1591 ~~326~~280,~~856~~329,~~169~~868.0238 Record Date 0407/3031/2004 0407/3031/2004 0407/3031/2004 Principal And Interest Constant ~~353~~326,~~428~~437.2624 ~~647~~585,~~571~~095.2225 21,~~076~~816,~~812~~137.5679 Scheduled Principal 3734,~~170~~057.8746 5954,~~679~~225.9923 ~~230~~203,~~296~~416.0735 Unscheduled Principal 31,~~661~~539,~~945~~754.8320 74,~~186~~190,~~799~~893.8909 1115,~~604~~891,~~600~~080.9350 Scheduled Interest ~~316~~292,~~257~~379.3978 ~~587~~530,~~891~~870.2302 1,~~846~~612,~~516~~721.4944 Servicing Fees 2423,~~932~~024.7454 3835,~~908~~148.6026 7465,~~822~~455.0150 Master Servicing Fees 0.00 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 ~~521~~451.2362 1,~~617~~437.5594 65,~~456~~924.8081 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 ~~290~~268,~~803~~903.4262 ~~547~~494,~~365~~283.0882 1,~~765~~541,~~237~~341.6813 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.~~309926~~310442 4.~~986347~~979261 6.~~254329~~239735

Group Level Collateral Statement Group Total Collateral Description Mixed ARM Weighted Average Coupon Rate 5.~~669329~~595320 Weighted Average Net Rate 5.~~357777~~283960 Weighted Average Maturity ~~354~~351.00 Record Date 0407/3031/2004 Principal And Interest Constant 43,~~154~~652,~~696~~379.61 Beginning Loan Count 32,~~167~~874 Loans Paid In Full ~~130~~103 Ending Loan Count 32,~~037~~771 Beginning Scheduled Balance ~~794~~706,~~445~~391,~~786~~752.3520 Ending Scheduled Balance ~~753~~676,~~477~~448,~~419~~372.2511 Scheduled Principal ~~401~~358,~~384~~639.2480 Unscheduled Principal 4029,~~566~~584,~~982~~740.8629 Scheduled Interest 3,~~753~~293,~~312~~739.3781 Servicing Fee ~~206~~183,~~259~~284.5293 Master Servicing Fee 0.00 Trustee Fee 0.00 Fry Amount 0.00 Special Hazard Fee 0.00 Other Fee 1110,~~833~~715.4756 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 3,~~535~~099,~~219~~739.3832 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.~~339903~~253926

Miscellaneous Reporting Group G4 30Y Jumbo A Arm Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Group G5 30Y Jumbo A Arm Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Group G6 30Y Alt A Arm Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Excess Cash 1,~~363~~088,~~104~~554.4995 Grp 1 Excess Interest ~~945~~851.6943 Grp 2 Excess Interest 21,~~237~~929.7911 Extra Principal Distribution 0.00 Overcollateralized Amount 1,777,350.28 Overcollateralization Deficiency 0.00 Overcollateralization Increase 0.00 Overcollateralization Release 0.00 Target Overcollateralization 1,777,350.28 Rolling 3 Month Delinquency Rate 01.~~19519~~219337% Trigger Event-3 Month Delinq Rate >5.25% NO

Group

Filing Compare · CSFB MORTGAGE BACKED PASS THR CERTS SER 2004-AR1