8-K 1 csf04001_dec.txt DECEMBER 8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 27, 2004 CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-107055-21 54-2144751 Pooling and Servicing Agreement) (Commission 54-2144752 (State or other File Number) 54-2144753 jurisdiction 54-2144754 of Incorporation) IRS EIN 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 December 27, 2004 a distribution was made to holders of CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION, Mortgage-Backed P/T Certificates, Series 2004-1 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 2004-1 Trust, relating to the December 27, 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 2004-1 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: 1/4/2005 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-1 Trust, relating to the December 27, 2004 distribution. EX-99.1

Credit Suisse First Boston Mortgage Securities Corp. Mortgage ~~Pass~~-~~Through~~Backed P/T Certificates Record Date: 1011/3130/042004 Distribution Date: 1112/2627/042004 ~~CSF~~Credit Suisse First Boston Mortgage Securities Corp. Mortgage-Backed P/T Certificates Series: 2004-1 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 I-A1 22541SAG3 SEN 5.75000% 9691,~~876~~772,~~387~~184.6772 ~~464~~437,~~157~~935.3130 57,~~104~~357,~~202~~787.9545 I-A-2 22541SAH1 SEN 5.75000% 1,835,306.00 8,~~793~~758.3805 0.00 I-A-3 22541SAJ7 SEN 5.75000% 15,759,000.00 75,~~505~~201.0468 0.00 II-A-1 22541SAL2 SEN 6.50000% 2524,~~587~~723,~~034~~914.2838 ~~138~~133,~~596~~921.4420 ~~863~~1,~~119~~850,883.9036 II-A-2 22541SAM0 SEN 6.00000% 2827,~~853~~880,~~465~~159.0661 ~~144~~139,~~267~~400.3380 ~~973~~2,~~305~~087,166.4540 III-A-1 22541SAN8 SEN 7.00000% 2826,~~282~~869,~~957~~848.6047 ~~164~~156,~~983~~740.9278 12,~~413~~573,~~109~~669.1247 IV-A-1 22541SAP3 SEN 5.00000% 35,~~169~~034,~~101~~758.1254 ~~146~~145,~~537~~978.9216 ~~134~~736,~~342~~006.5887 V-A-1 22541SAQ1 SEN 5.50000% 1716,~~174~~900,~~297~~606.0262 7877,~~715~~461.5311 ~~273~~1,~~690~~010,259.4022 I-X 22541SAR9 IO 5.75000% 0.00 6663,~~840~~969.1846 0.00 D-X-1 22541SAS7 IO 7.00000% 0.00 2019,~~249~~543.7203 0.00 D-X-2 22541SAT5 IO 5.00000% 0.00 30,~~974~~544.0146 0.00 I-P 22541SAU2 PO 0.00000% ~~308~~307,~~580~~928.7752 0.00 ~~652~~12,184.24 D-P-1 22541SAV0 PO 0.00000% ~~327~~323,~~815~~392.4272 0.00 420,~~422~~978.7084 D-P-2 22541SAW8 PO 0.00000% ~~351~~349,~~453~~833.3353 0.00 1,~~619~~629.8053 AR 22541SBA5 RES 5.75000% 0.00 0.00 0.00 AR-L 22541SBB3 RES 5.75000% 0.00 0.00 0.00 D-B-1 22541SAX6 SUB 5.~~90611~~90648% 11,~~337~~322,~~981~~528.7974 55,~~797~~501.7223 15,~~453~~559.0522 D-B-2 22541SAY4 SUB 5.~~90611~~90648% 2,~~699~~695,~~518~~839.7243 13,~~285~~214.1757 3,~~679~~704.3058 D-B-3 22541SAZ1 SUB 5.~~90611~~90648% 3,~~239~~235,~~422~~007.6651 15,~~942~~857.2049 4,~~415~~445.1649 D-B-4 22541SBC1 SUB 5.~~90611~~90648% 3,~~959~~953,~~294~~898.9161 19,~~484~~381.9238 5,~~396~~433.3038 D-B-5 22541SBD9 SUB 5.~~90611~~90648% 2,~~699~~695,~~518~~839.7243 13,~~285~~214.1757 3,~~679~~704.3058 D-B-6 22541SBE7 SUB 5.~~90611~~90648% ~~899~~898,~~840~~614.6824 4,~~428~~404.4086 1,~~226~~234.4480 Totals ~~275~~266,~~360~~558,~~975~~661.7507 1,~~461~~411,~~844~~028.3613 815,~~802~~684,~~314~~647.6943

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A1 0.00 9184,~~772~~414,~~184~~397.7227 57,~~568~~795,~~360~~722.2675 0.00 I-A-2 0.00 1,835,306.00 8,~~793~~758.3805 0.00 I-A-3 0.00 15,759,000.00 75,~~505~~201.0468 0.00 II-A-1 0.00 2422,~~723~~873,~~914~~031.3802 1,~~001~~984,~~716~~804.3456 0.00 II-A-2 0.00 2725,~~880~~792,~~159~~993.6121 12,~~117~~226,~~572~~567.7820 0.00 III-A-1 0.00 2624,~~869~~296,~~848~~179.4700 12,~~578~~730,~~093~~410.0425 0.00 IV-A-1 0.00 3534,~~034~~298,~~758~~751.5468 ~~280~~881,~~880~~985.5003 0.00 V-A-1 0.00 1615,~~900~~890,~~606~~347.6240 ~~352~~1,~~405~~087,720.9333 0.00 I-X 0.00 0.00 6663,~~840~~969.1846 0.00 D-X-1 0.00 0.00 2019,~~249~~543.7203 0.00 D-X-2 0.00 0.00 30,~~974~~544.0146 0.00 I-P 0.00 ~~307~~295,~~928~~744.5228 ~~652~~12,184.24 0.00 D-P-1 0.00 ~~323~~302,~~392~~413.7288 420,~~422~~978.7084 0.00 D-P-2 0.00 ~~349~~348,~~833~~204.5300 1,~~619~~629.8053 0.00 AR 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 D-B-1 0.00 11,~~322~~306,~~528~~969.7452 71,~~250~~060.7745 0.00 D-B-2 0.00 2,~~695~~692,~~839~~134.4385 16,~~964~~919.4715 0.00 D-B-3 0.00 3,~~235~~230,~~007~~562.5101 20,~~357~~302.3698 0.00 D-B-4 0.00 3,~~953~~948,~~898~~465.6123 24,~~881~~814.2276 0.00 D-B-5 0.00 2,~~695~~692,~~839~~134.4385 16,~~964~~919.4715 0.00 D-B-6 0.00 ~~898~~897,~~614~~379.2438 5,~~654~~639.8466 0.00 Totals 0.00 ~~266~~250,~~558~~874,~~661~~013.0758 1017,~~264~~095,~~159~~675.0556 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-A1 140,000,000.00 9691,~~876~~772,~~387~~184.6772 ~~106~~102,~~625~~573.5999 47,~~997~~255,~~577~~213.3646 0.00 0.00 I-A-2 1,835,306.00 1,835,306.00 0.00 0.00 0.00 0.00 I-A-3 15,759,000.00 15,759,000.00 0.00 0.00 0.00 0.00 II-A-1 34,480,922.00 2524,~~587~~723,~~034~~914.2838 2423,~~604~~941.8969 ~~838~~1,~~515~~826,941.0167 0.00 0.00 II-A-2 38,882,743.00 2827,~~853~~880,~~465~~159.0661 2726,~~745~~998.9407 ~~945~~2,~~559~~060,168.5133 0.00 0.00 III-A-1 41,956,092.00 2826,~~282~~869,~~957~~848.6047 21,~~974~~037.1189 12,~~391~~552,~~135~~631.0158 0.00 0.00 IV-A-1 40,005,655.00 35,~~169~~034,~~101~~758.1254 132,~~083~~727.1690 2603,~~259~~278.4296 0.00 0.00 V-A-1 24,550,484.00 1716,~~174~~900,~~297~~606.0262 43,~~212~~252.6681 ~~230~~967,~~477~~006.7441 0.00 0.00 I-X 0.00 0.00 0.00 0.00 0.00 0.00 D-X-1 0.00 0.00 0.00 0.00 0.00 0.00 D-X-2 0.00 0.00 0.00 0.00 0.00 0.00 I-P 329,084.75 ~~308~~307,~~580~~928.7752 ~~345~~346.0340 ~~307~~11,837.2184 0.00 0.00 D-P-1 422,802.96 ~~327~~323,~~815~~392.4272 ~~320~~317.0799 420,~~102~~660.6385 0.00 0.00 D-P-2 376,255.65 ~~351~~349,~~453~~833.3353 1,~~521~~528.4436 98101.3517 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 D-B-1 11,456,339.00 11,~~337~~322,~~981~~528.7974 15,~~453~~559.0522 0.00 0.00 0.00 D-B-2 2,727,699.00 2,~~699~~695,~~518~~839.7243 3,~~679~~704.3058 0.00 0.00 0.00 D-B-3 3,273,239.00 3,~~239~~235,~~422~~007.6651 4,~~415~~445.1649 0.00 0.00 0.00 D-B-4 4,000,626.00 3,~~959~~953,~~294~~898.9161 5,~~396~~433.3038 0.00 0.00 0.00 D-B-5 2,727,699.00 2,~~699~~695,~~518~~839.7243 3,~~679~~704.3058 0.00 0.00 0.00 D-B-6 909,235.00 ~~899~~898,~~840~~614.6824 1,~~226~~234.4480 0.00 0.00 0.00 Totals 363,693,282.36 ~~275~~266,~~360~~558,~~975~~661.7507 ~~392~~386,~~282~~807.4415 815,~~410~~297,~~032~~840.2427 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-A1 57,~~104~~357,~~202~~787.9545 9184,~~772~~414,~~184~~397.7227 0.~~65551561~~60295998 57,~~104~~357,~~202~~787.9545 I-A-2 0.00 1,835,306.00 1.00000000 0.00 I-A-3 0.00 15,759,000.00 1.00000000 0.00 II-A-1 ~~863~~1,~~119~~850,883.9036 2422,~~723~~873,~~914~~031.3802 0.~~71703171~~66335323 ~~863~~1,~~119~~850,883.9036 II-A-2 ~~973~~2,~~305~~087,166.4540 2725,~~880~~792,~~159~~993.6121 0.~~71703171~~66335323 ~~973~~2,~~305~~087,166.4540 III-A-1 12,~~413~~573,~~109~~669.1247 2624,~~869~~296,~~848~~179.4700 0.~~64042782~~57908585 12,~~413~~573,~~109~~669.1247 IV-A-1 ~~134~~736,~~342~~006.5887 3534,~~034~~298,~~758~~751.5468 0.~~87574516~~85734758 ~~134~~736,~~342~~006.5887 V-A-1 ~~273~~1,~~690~~010,259.4022 1615,~~900~~890,~~606~~347.6240 0.~~68840218~~64725190 ~~273~~1,~~690~~010,259.4022 I-X 0.00 0.00 0.00000000 0.00 D-X-1 0.00 0.00 0.00000000 0.00 D-X-2 0.00 0.00 0.00000000 0.00 I-P ~~652~~12,184.24 ~~307~~295,~~928~~744.5228 0.~~93571191~~89868728 ~~652~~12,184.24 D-P-1 420,~~422~~978.7084 ~~323~~302,~~392~~413.7288 0.~~76487809~~71525961 420,~~422~~978.7084 D-P-2 1,~~619~~629.8053 ~~349~~348,~~833~~204.5300 0.~~92977615~~92544524 1,~~619~~629.8053 AR 0.00 0.00 0.00000000 0.00 AR-L 0.00 0.00 0.00000000 0.00 D-B-1 15,~~453~~559.0522 11,~~322~~306,~~528~~969.7452 0.~~98831998~~98696185 15,~~453~~559.0522 D-B-2 3,~~679~~704.3058 2,~~695~~692,~~839~~134.4385 0.~~98831998~~98696185 3,~~679~~704.3058 D-B-3 4,~~415~~445.1649 3,~~235~~230,~~007~~562.5101 0.~~98831998~~98696185 4,~~415~~445.1649 D-B-4 5,~~396~~433.3038 3,~~953~~948,~~898~~465.6123 0.~~98831998~~98696185 5,~~396~~433.3038 D-B-5 3,~~679~~704.3058 2,~~695~~692,~~839~~134.4385 0.~~98831998~~98696185 3,~~679~~704.3058 D-B-6 1,~~226~~234.4480 ~~898~~897,~~614~~379.2438 0.~~98831902~~98696088 1,~~226~~234.4480 Totals 815,~~802~~684,~~314~~647.6943 ~~266~~250,~~558~~874,~~661~~013.0758 0.~~73292160~~68979557 815,~~802~~684,~~314~~647.6943

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A1 140,000,000.00 ~~691~~655.~~97419764~~51560514 0.~~76161136~~73267136 3551.~~69698114~~82295329 0.00000000 I-A-2 1,835,306.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A-3 15,759,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 II-A-1 34,480,922.00 ~~742~~717.~~06351791~~03170756 0.~~71357982~~69434599 2452.~~31823053~~98413047 0.00000000 II-A-2 38,882,743.00 ~~742~~717.~~06351800~~03170761 0.~~71357980~~69434582 2452.~~31823058~~98413052 0.00000000 III-A-1 41,956,092.00 ~~674~~640.~~10848465~~42781844 0.~~52374063~~50142635 3360.~~15692534~~84054683 0.00000000 IV-A-1 40,005,655.00 ~~879~~875.~~10324478~~74515503 3.~~30161223~~31772846 015.~~05647752~~07984209 0.00000000 V-A-1 24,550,484.00 ~~699~~688.~~55024186~~40217651 1.~~76015512~~76179052 939.~~38791023~~38848660 0.00000000 I-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 D-X-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 D-X-2 0.00 0.00000000 0.00000000 0.00000000 0.00000000 I-P 329,084.75 ~~937~~935.~~69392231~~71191008 1.~~04845332~~05261639 035.~~93352852~~97201025 0.00000000 D-P-1 422,802.96 ~~775~~764.~~33851702~~87808884 0.~~75701930~~75209975 948.~~70340889~~86637974 0.00000000 D-P-2 376,255.65 ~~934~~929.~~08120250~~77615087 4.~~04363363~~06202538 0.~~26139142~~26888633 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 D-B-1 11,456,339.00 ~~989~~988.~~66884534~~31998075 1.~~34886459~~35813195 0.00000000 0.00000000 D-B-2 2,727,699.00 ~~989~~988.~~66884543~~31998325 1.~~34886584~~35813372 0.00000000 0.00000000 D-B-3 3,273,239.00 ~~989~~988.~~66884484~~31998213 1.~~34886576~~35813181 0.00000000 0.00000000 D-B-4 4,000,626.00 ~~989~~988.~~66884433~~31998042 1.~~34886390~~35813245 0.00000000 0.00000000 D-B-5 2,727,699.00 ~~989~~988.~~66884543~~31998325 1.~~34886584~~35813372 0.00000000 0.00000000 D-B-6 909,235.00 ~~989~~988.~~66788564~~31901544 1.~~34887020~~35806475 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-A1 0.00000000 3652.~~45859250~~55562464 ~~655~~602.~~51560514~~95998050 0.~~65551561~~60295998 3652.~~45859250~~55562464 I-A-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 I-A-3 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 II-A-1 0.00000000 2553.~~03181034~~67847646 ~~717~~663.~~03170756~~35323110 0.~~71703171~~66335323 2553.~~03181034~~67847646 II-A-2 0.00000000 2553.~~03181038~~67847634 ~~717~~663.~~03170761~~35323128 0.~~71703171~~66335323 2553.~~03181038~~67847634 III-A-1 0.00000000 3361.~~68066597~~34197318 ~~640~~579.~~42781844~~08584527 0.~~64042782~~57908585 3361.~~68066597~~34197318 IV-A-1 0.00000000 318.~~35808975~~39757079 ~~875~~857.~~74515503~~34758449 0.~~87574516~~85734758 318.~~35808975~~39757079 V-A-1 0.00000000 1141.~~14806535~~15027712 ~~688~~647.~~40217651~~25189939 0.~~68840218~~64725190 1141.~~14806535~~15027712 I-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 D-X-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 D-X-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-P 0.00000000 137.~~98198185~~02462663 ~~935~~898.~~71191008~~68728344 0.~~93571191~~89868728 137.~~98198185~~02462663 D-P-1 0.00000000 1049.~~46042819~~61847949 ~~764~~715.~~87808884~~25960935 0.~~76487809~~71525961 1049.~~46042819~~61847949 D-P-2 0.00000000 4.~~30505163~~33091171 ~~929~~925.~~77615087~~44523916 0.~~92977615~~92544524 4.~~30505163~~33091171 AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 D-B-1 0.00000000 1.~~34886459~~35813195 ~~988~~986.~~31998075~~96184881 0.~~98831998~~98696185 1.~~34886459~~35813195 D-B-2 0.00000000 1.~~34886584~~35813372 ~~988~~986.~~31998325~~96184953 0.~~98831998~~98696185 1.~~34886584~~35813372 D-B-3 0.00000000 1.~~34886576~~35813181 ~~988~~986.~~31998213~~96184727 0.~~98831998~~98696185 1.~~34886576~~35813181 D-B-4 0.00000000 1.~~34886390~~35813245 ~~988~~986.~~31998042~~96184797 0.~~98831998~~98696185 1.~~34886390~~35813245 D-B-5 0.00000000 1.~~34886584~~35813372 ~~988~~986.~~31998325~~96184953 0.~~98831998~~98696185 1.~~34886584~~35813372 D-B-6 0.00000000 1.~~34887020~~35806475 ~~988~~986.~~31901544~~96088470 0.~~98831902~~98696088 1.~~34887020~~35806475 (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-A1 140,000,000.00 5.75000% 9691,~~876~~772,~~387~~184.6772 ~~464~~439,~~199~~741.3672 0.00 0.00 I-A-2 1,835,306.00 5.75000% 1,835,306.00 8,794.17 0.00 0.00 I-A-3 15,759,000.00 5.75000% 15,759,000.00 75,511.88 0.00 0.00 II-A-1 34,480,922.00 6.50000% 2524,~~587~~723,~~034~~914.2838 ~~138~~133,~~596~~921.4420 0.00 0.00 II-A-2 38,882,743.00 6.00000% 2827,~~853~~880,~~465~~159.0661 ~~144~~139,~~267~~400.3380 0.00 0.00 III-A-1 41,956,092.00 7.00000% 2826,~~282~~869,~~957~~848.6047 ~~164~~156,~~983~~740.9278 0.00 0.00 IV-A-1 40,005,655.00 5.00000% 35,~~169~~034,~~101~~758.1254 ~~146~~145,~~537~~978.9216 0.00 0.00 V-A-1 24,550,484.00 5.50000% 1716,~~174~~900,~~297~~606.0262 7877,~~715~~461.5311 0.00 0.00 I-X 0.00 5.75000% 13,~~950~~405,~~518~~214.7284 6664,~~846~~233.2432 0.00 0.00 D-X-1 0.00 7.00000% 3,~~471~~350,~~380~~234.0548 2019,~~249~~543.7203 0.00 0.00 D-X-2 0.00 5.00000% 7,~~433~~330,~~762~~670.7247 30,~~974~~544.0146 0.00 0.00 I-P 329,084.75 0.00000% ~~308~~307,~~580~~928.7752 0.00 0.00 0.00 D-P-1 422,802.96 0.00000% ~~327~~323,~~815~~392.4272 0.00 0.00 0.00 D-P-2 376,255.65 0.00000% ~~351~~349,~~453~~833.3353 0.00 0.00 0.00 AR 50.00 5.75000% 0.00 0.00 0.00 0.00 AR-L 50.00 5.75000% 0.00 0.00 0.00 0.00 D-B-1 11,456,339.00 5.~~90611~~90648% 11,~~337~~322,~~981~~528.7974 55,~~802~~730.8119 0.00 0.00 D-B-2 2,727,699.00 5.~~90611~~90648% 2,~~699~~695,~~518~~839.7243 13,~~286~~269.3809 0.00 0.00 D-B-3 3,273,239.00 5.~~90611~~90648% 3,~~239~~235,~~422~~007.6651 15,~~943~~922.6691 0.00 0.00 D-B-4 4,000,626.00 5.~~90611~~90648% 3,~~959~~953,~~294~~898.9161 19,~~486~~461.6934 0.00 0.00 D-B-5 2,727,699.00 5.~~90611~~90648% 2,~~699~~695,~~518~~839.7243 13,~~286~~269.3809 0.00 0.00 D-B-6 909,235.00 5.~~90611~~90648% ~~899~~898,~~840~~614.6824 4,~~428~~423.8004 0.00 0.00 Totals 363,693,282.36 1,~~461~~413,~~911~~946.2429 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-A1 421,806.0542 0.00 ~~464~~437,~~157~~935.3130 0.00 9184,~~772~~414,~~184~~397.7227 I-A-2 036.8013 0.00 8,~~793~~758.3805 0.00 1,835,306.00 I-A-3 6310.8420 0.00 75,~~505~~201.0468 0.00 15,759,000.00 II-A-1 0.00 0.00 ~~138~~133,~~596~~921.4420 0.00 2422,~~723~~873,~~914~~031.3802 II-A-2 0.00 0.00 ~~144~~139,~~267~~400.3380 0.00 2725,~~880~~792,~~159~~993.6121 III-A-1 0.00 0.00 ~~164~~156,~~983~~740.9278 0.00 2624,~~869~~296,~~848~~179.4700 IV-A-1 0.00 0.00 ~~146~~145,~~537~~978.9216 0.00 3534,~~034~~298,~~758~~751.5468 V-A-1 0.00 0.00 7877,~~715~~461.5311 0.00 1615,~~900~~890,~~606~~347.6240 I-X 6263.0586 0.00 6663,~~840~~969.1846 0.00 1312,~~405~~211,~~214~~281.8434 D-X-1 0.00 0.00 2019,~~249~~543.7203 0.00 3,~~350~~024,~~234~~381.4817 D-X-2 0.00 0.00 30,~~974~~544.0146 0.00 76,~~330~~847,~~670~~780.4789 I-P 0.00 0.00 0.00 0.00 ~~307~~295,~~928~~744.5228 D-P-1 0.00 0.00 0.00 0.00 ~~323~~302,~~392~~413.7288 D-P-2 0.00 0.00 0.00 0.00 ~~349~~348,~~833~~204.5300 AR 0.00 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 0.00 D-B-1 5228.0593 0.00 55,~~797~~501.7223 0.00 11,~~322~~306,~~528~~969.7452 D-B-2 154.2051 0.00 13,~~285~~214.1757 0.00 2,~~695~~692,~~839~~134.4385 D-B-3 165.4441 0.00 15,~~942~~857.2049 0.00 3,~~235~~230,~~007~~562.5101 D-B-4 179.7795 0.00 19,~~484~~381.9238 0.00 3,~~953~~948,~~898~~465.6123 D-B-5 154.2051 0.00 13,~~285~~214.1757 0.00 2,~~695~~692,~~839~~134.4385 D-B-6 018.4017 0.00 4,~~428~~404.4086 0.00 ~~898~~897,~~614~~379.2438 Totals 662,918.8009 0.00 1,~~461~~411,~~844~~028.3613 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-A1 140,000,000.00 5.75000% ~~691~~655.~~97419764~~51560514 3.~~31570971~~14101229 0.00000000 0.00000000 I-A-2 1,835,306.00 5.75000% 1000.00000000 4.79166417 0.00000000 0.00000000 I-A-3 15,759,000.00 5.75000% 1000.00000000 4.79166698 0.00000000 0.00000000 II-A-1 34,480,922.00 6.50000% ~~742~~717.~~06351791~~03170756 43.~~01951085~~88392167 0.00000000 0.00000000 II-A-2 38,882,743.00 6.00000% ~~742~~717.~~06351800~~03170761 3.~~71031771~~58515859 0.00000000 0.00000000 III-A-1 41,956,092.00 7.00000% ~~674~~640.~~10848465~~42781844 3.~~93229951~~73582888 0.00000000 0.00000000 IV-A-1 40,005,655.00 5.00000% ~~879~~875.~~10324478~~74515503 3.~~66293015~~64893813 0.00000000 0.00000000 V-A-1 24,550,484.00 5.50000% ~~699~~688.~~55024186~~40217651 3.~~20627202~~15517649 0.00000000 0.00000000 I-X 0.00 5.75000% ~~680~~653.~~43674470~~83954037 3.~~26042629~~13298108 0.00000000 0.00000000 D-X-1 0.00 7.00000% ~~682~~658.~~73939513~~91289040 3.~~98264707~~84365765 0.00000000 0.00000000 D-X-2 0.00 5.00000% ~~722~~712.~~41448664~~39596202 32.~~01006023~~96831648 0.00000000 0.00000000 I-P 329,084.75 0.00000% ~~937~~935.~~69392231~~71191008 0.00000000 0.00000000 0.00000000 D-P-1 422,802.96 0.00000% ~~775~~764.~~33851702~~87808884 0.00000000 0.00000000 0.00000000 D-P-2 376,255.65 0.00000% ~~934~~929.~~08120250~~77615087 0.00000000 0.00000000 0.00000000 AR 50.00 5.75000% 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 50.00 5.75000% 0.00000000 0.00000000 0.00000000 0.00000000 D-B-1 11,456,339.00 5.~~90611~~90648% ~~989~~988.~~66884534~~31998075 4.~~87091120~~86457236 0.00000000 0.00000000 D-B-2 2,727,699.00 5.~~90611~~90648% ~~989~~988.~~66884543~~31998325 4.~~87091134~~86457267 0.00000000 0.00000000 D-B-3 3,273,239.00 5.~~90611~~90648% ~~989~~988.~~66884484~~31998213 4.~~87091227~~86457298 0.00000000 0.00000000 D-B-4 4,000,626.00 5.~~90611~~90648% ~~989~~988.~~66884433~~31998042 4.~~87091020~~86457369 0.00000000 0.00000000 D-B-5 2,727,699.00 5.~~90611~~90648% ~~989~~988.~~66884543~~31998325 4.~~87091134~~86457267 0.00000000 0.00000000 D-B-6 909,235.00 5.~~90611~~90648% ~~989~~988.~~66788564~~31901544 4.~~87090796~~86457297 0.00000000 0.00000000 (5) All classes are per $1,000 denomination.

Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance I-A1 0.~~00030036~~01290300 0.00000000 3.~~31540936~~12810929 0.00000000 ~~655~~602.~~51560514~~95998050 I-A-2 0.~~00043589~~01968609 0.00000000 4.~~79123372~~77198353 0.00000000 1000.00000000 I-A-3 0.~~00043404~~01968399 0.00000000 4.~~79123295~~77198299 0.00000000 1000.00000000 II-A-1 0.00000000 0.00000000 43.~~01951085~~88392167 0.00000000 ~~717~~663.~~03170756~~35323110 II-A-2 0.00000000 0.00000000 3.~~71031771~~58515859 0.00000000 ~~717~~663.~~03170761~~35323128 III-A-1 0.00000000 0.00000000 3.~~93229951~~73582888 0.00000000 ~~640~~579.~~42781844~~08584527 IV-A-1 0.00000000 0.00000000 3.~~66293015~~64893813 0.00000000 ~~875~~857.~~74515503~~34758449 V-A-1 0.00000000 0.00000000 3.~~20627202~~15517649 0.00000000 ~~688~~647.~~40217651~~25189939 I-X 0.~~00029509~~01286978 0.00000000 3.~~26013071~~12011130 0.00000000 ~~653~~595.~~83954037~~60541729 D-X-1 0.00000000 0.00000000 3.~~98264707~~84365765 0.00000000 ~~658~~594.~~91289040~~82515337 D-X-2 0.00000000 0.00000000 32.~~01006023~~96831648 0.00000000 ~~712~~665.~~39596202~~46866004 I-P 0.00000000 0.00000000 0.00000000 0.00000000 ~~935~~898.~~71191008~~68728344 D-P-1 0.00000000 0.00000000 0.00000000 0.00000000 ~~764~~715.~~87808884~~25960935 D-P-2 0.00000000 0.00000000 0.00000000 0.00000000 ~~929~~925.~~77615087~~44523916 AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 D-B-1 0.~~00044080~~01998282 0.00000000 4.~~87046691~~84458691 0.00000000 ~~988~~986.~~31998075~~96184881 D-B-2 0.~~00043993~~01998388 0.00000000 4.~~87046775~~84458512 0.00000000 ~~988~~986.~~31998325~~96184953 D-B-3 0.~~00043993~~01998326 0.00000000 4.~~87046623~~84458666 0.00000000 ~~988~~986.~~31998213~~96184727 D-B-4 0.~~00044243~~01998437 0.00000000 4.~~87046777~~84458682 0.00000000 ~~988~~986.~~31998042~~96184797 D-B-5 0.~~00043993~~01998388 0.00000000 4.~~87046775~~84458512 0.00000000 ~~988~~986.~~31998325~~96184953 D-B-6 0.~~00043993~~01998383 0.00000000 4.~~87046803~~84457813 0.00000000 ~~988~~986.~~31901544~~96088470 (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 1017,~~334~~163,~~729~~080.8640 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 3236,~~323~~020.6943 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 1017,~~367~~199,~~053~~100.5583 Withdrawals Reimbursement for Servicer Advances 2932,~~285~~323.6469 Payment of Service Fee 7371,~~608~~101.8651 Payment of Interest and Principal 1017,~~264~~095,~~159~~675.0563 Total Withdrawals (Pool Distribution Amount) 1017,~~367~~199,~~053~~100.5583 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 662,918.8009

SERVICING FEES Gross Servicing Fee 5755,~~366~~533.8704 External MS Fee 2,~~873~~777.3461 PMI Fee 11,~~647~~124.6988 Trust Administrator Fee 1,~~720~~665.9698 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 7371,~~608~~101.8651

OTHER ACCOUNTS Original $ Original % Current $ Current % Bankruptcy 142,759.00 0.03925258% 142,759.00 0.~~05355632~~05690466% Fraud 7,273,865.66 2.00000000% 7,273,865.66 2.~~72880485~~89940977% Special Hazard 3,636,933.00 1.00000005% 2,753,609.76 1.~~03302206~~09760661% Limit of Subordinate's Exposure to Certain Types of Losses

Delinquency Status By Groups DELINQUENT BANKRUPTCY FORECLOSURE REO Total G1 30Y Conf AltA 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 1 0 0 1 ~~272~~271,~~232~~932.5370 0.00 0.00 ~~272~~271,~~232~~932.5370 30 Days 13 0 0 0 13 ~~550~~1,~~601~~018,137.3595 0.00 0.00 0.00 ~~550~~1,~~601~~018,137.3595 60 Days 01 0 0 0 01 0343,768.0085 0.00 0.00 0.00 0343,768.0085 90 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 120 Days 0 0 10 0 10 0.00 0.00 ~~564,763~~0.1900 0.00 ~~564,763~~0.1900 150 Days 10 0 10 0 20 ~~455,729~~0.2500 0.00 ~~334,668~~0.6500 0.00 ~~790,397~~0.9000 180 Days 0 0 02 0 02 0.00 0.00 0790,397.0090 0.00 0790,397.0090 Totals 24 1 2 0 57 1,~~006~~361,~~330~~906.6080 ~~272~~271,~~232~~932.5370 ~~899~~790,~~431~~397.8490 0.00 2,~~177~~424,~~994~~237.9740 0-29 Days 0.~~317460~~334448% 0.000000% 0.000000% 0.~~317460~~334448% 0.~~224319~~238584% 0.000000% 0.000000% 0.~~224319~~238584% 30 Days 01.~~317460~~003344% 0.000000% 0.000000% 0.000000% 01.~~317460~~003344% 0.~~453694~~893276% 0.000000% 0.000000% 0.000000% 0.~~453694~~893276% 60 Days 0.~~000000~~334448% 0.000000% 0.000000% 0.000000% 0.~~000000~~334448% 0.~~000000~~301610% 0.000000% 0.000000% 0.000000% 0.~~000000~~301610% 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.~~317460~~000000% 0.000000% 0.~~317460~~000000% 0.000000% 0.000000% 0.~~465363~~000000% 0.000000% 0.~~465363~~000000% 150 Days 0.~~317460~~000000% 0.000000% 0.~~317460~~000000% 0.000000% 0.~~634921~~000000% 0.~~375519~~000000% 0.000000% 0.~~275766~~000000% 0.000000% 0.~~651285~~000000% 180 Days 0.000000% 0.000000% 0.~~000000~~668896% 0.000000% 0.~~000000~~668896% 0.000000% 0.000000% 0.~~000000~~693466% 0.000000% 0.~~000000~~693466% Totals 01.~~634921~~337793% 0.~~317460~~334448% 0.~~634921~~668896% 0.000000% 12.~~587302~~341137% 01.~~829213~~194887% 0.~~224319~~238584% 0.~~741129~~693466% 0.000000% 12.~~794661~~126936% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G2 30Y Conf AltA 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 13 0 0 0 13 ~~148~~672,~~438~~863.5170 0.00 0.00 0.00 ~~148~~672,~~438~~863.5170 60 Days 3 0 0 1 0 31 ~~501,826.01~~ 0.00 0.00 197,305.49 0.00 ~~501~~197,~~826~~305.0149 90 Days 1 0 1 0 2 ~~102~~186,~~105~~216.9248 0.00 ~~197~~117,~~658~~484.8630 0.00 ~~299~~303,~~764~~700.78 120 Days 1 0 0 0 1 ~~167~~102,~~555~~002.7703 0.00 0.00 0.00 ~~167~~102,~~555~~002.7703 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180 Days 1 0 0 0 1 235,430.44 0.00 0.00 0.00 235,430.44 Totals 76 0 12 0 8 1,~~155~~196,~~356~~512.65 0.00 ~~197~~314,~~658~~789.8679 0.00 1,~~353~~511,~~015~~302.5144 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~265957~~847458% 0.000000% 0.000000% 0.000000% 0.~~265957~~847458% 01.~~254405~~237294% 0.000000% 0.000000% 0.000000% 01.~~254405~~237294% 60 Days 0.~~797872~~000000% 0.000000% 0.~~000000~~282486% 0.000000% 0.~~797872~~282486% 0.~~860068~~000000% 0.000000% 0.~~000000~~362815% 0.000000% 0.~~860068~~362815% 90 Days 0.~~265957~~282486% 0.000000% 0.~~265957~~282486% 0.000000% 0.~~531915~~564972% 0.~~174997~~342424% 0.000000% 0.~~338763~~216036% 0.000000% 0.~~513760~~558460% 120 Days 0.~~265957~~282486% 0.000000% 0.000000% 0.000000% 0.~~265957~~282486% 0.~~287170~~187566% 0.000000% 0.000000% 0.000000% 0.~~287170~~187566% 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.~~265957~~282486% 0.000000% 0.000000% 0.000000% 0.~~265957~~282486% 0.~~403499~~432921% 0.000000% 0.000000% 0.000000% 0.~~403499~~432921% Totals 1.~~861702~~694915% 0.000000% 0.~~265957~~564972% 0.000000% 2.~~127660~~259887% 12.~~980139~~200205% 0.000000% 0.~~338763~~578851% 0.000000% 2.~~318902~~779056% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G3 30Y Conf AltA 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 63 0 0 0 63 ~~594~~307,~~114~~973.5196 0.00 0.00 0.00 ~~594~~307,~~114~~973.5196 60 Days 43 0 0 0 43 ~~588~~272,~~899~~150.2401 0.00 0.00 0.00 ~~588~~272,~~899~~150.2401 90 Days 0 0 02 0 02 0.00 0.00 0310,218.0022 0.00 0310,218.0022 120 Days 10 0 10 0 20 ~~125,292~~0.8100 0.00 ~~67,056~~0.5100 0.00 ~~192,349~~0.3200 150 Days 01 0 01 0 02 0125,292.0081 0.00 067,056.0051 0.00 0192,349.0032 180 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 117 0 13 0 1210 1705,~~308,306~~416.5678 0.00 67377,~~056~~274.5173 0.00 1,~~375~~082,~~363~~691.0751 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 21.~~542373~~369863% 0.000000% 0.000000% 0.000000% 21.~~542373~~369863% 1.~~979433~~122549% 0.000000% 0.000000% 0.000000% 1.~~979433~~122549% 60 Days 1.~~694915~~369863% 0.000000% 0.000000% 0.000000% 1.~~694915~~369863% 10.~~962057~~991973% 0.000000% 0.000000% 0.000000% 10.~~962057~~991973% 90 Days 0.000000% 0.000000% 0.~~000000~~913242% 0.000000% 0.~~000000~~913242% 0.000000% 0.000000% 01.~~000000~~130729% 0.000000% 01.~~000000~~130729% 120 Days 0.~~423729~~000000% 0.000000% 0.~~423729~~000000% 0.000000% 0.~~847458~~000000% 0.~~417443~~000000% 0.000000% 0.~~223415~~000000% 0.000000% 0.~~640857~~000000% 150 Days 0.~~000000~~456621% 0.000000% 0.~~000000~~456621% 0.000000% 0.~~000000~~913242% 0.~~000000~~456686% 0.000000% 0.~~000000~~244418% 0.000000% 0.~~000000~~701103% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 43.~~661017~~196347% 0.000000% 01.~~423729~~369863% 0.000000% 54.~~084746~~566210% 42.~~358933~~571208% 0.000000% 01.~~223415~~375147% 0.000000% 43.~~582347~~946354% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G4 15Y Jumbo AltA 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 0576,964.0033 0.00 0.00 0.00 0576,964.0033 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 0576,964.0033 0.00 0.00 0.00 0576,964.0033 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 01.~~000000~~333333% 0.000000% 0.000000% 0.000000% 01.~~000000~~333333% 01.~~000000~~539139% 0.000000% 0.000000% 0.000000% 01.~~000000~~539139% 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 01.~~000000~~333333% 0.000000% 0.000000% 0.000000% 01.~~000000~~333333% 01.~~000000~~539139% 0.000000% 0.000000% 0.000000% 01.~~000000~~539139% DELINQUENT BANKRUPTCY FORECLOSURE REO Total G5 15Y Conf AltA 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 ~~115,506~~0.6700 0.00 0.00 0.00 ~~115,506~~0.6700 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 10 0 0 0 10 ~~115,506~~0.6700 0.00 0.00 0.00 ~~115,506~~0.6700 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~769231~~000000% 0.000000% 0.000000% 0.000000% 0.~~769231~~000000% 0.~~612079~~000000% 0.000000% 0.000000% 0.000000% 0.~~612079~~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.~~769231~~000000% 0.000000% 0.000000% 0.000000% 0.~~769231~~000000% 0.~~612079~~000000% 0.000000% 0.000000% 0.000000% 0.~~612079~~000000%

COLLATERAL STATEMENT Collateral Description Mixed Fixed Weighted Average Gross Coupon 6.~~691668~~685423% Weighted Average Net Coupon 6.~~441668~~435423% Weighted Average Pass-Through Rate 6.~~370596~~365336% Weighted Average Maturity(Stepdown Calculation ) ~~228~~227 Beginning Scheduled Collateral Loan Count 1,~~170~~133 Number Of Loans Paid In Full 3764 Ending Scheduled Collateral Loan Count 1,~~133~~069 Beginning Scheduled Collateral Balance ~~275~~266,~~360~~558,~~975~~661.7507 Ending Scheduled Collateral Balance ~~266~~250,~~558~~874,~~661~~013.0759 Ending Actual Collateral Balance at 3130-~~Oct~~Nov-2004 ~~266~~251,~~817~~135,~~966~~102.2167 Monthly P &I Constant 1,~~927~~871,~~802~~855.6106 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 1016,~~108~~942,~~141~~436.6401 Ending Scheduled Balance for Premium Loans ~~266~~250,~~558~~874,~~661~~013.0759 Scheduled Principal ~~392~~386,~~282~~807.4321 Unscheduled Principal 815,~~410~~297,~~032~~840.2527

Group Level Collateral Statement Group G1 30Y Conf AltA G2 30Y Conf AltA G3 30Y Conf AltA Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 6.~~685342~~683878 6.~~678928~~678738 7.~~774482~~776443 Weighted Average Net Rate 6.~~435341~~433878 6.~~428928~~428739 7.~~524482~~526443 Weighted Average Maturity ~~347~~ 346 ~~346~~345 345 Beginning Loan Count ~~330~~315 ~~387~~376 ~~246~~236 Loans Paid In Full 1516 1122 1017 Ending Loan Count ~~315~~299 ~~376~~354 ~~236~~219 Beginning Scheduled Balance ~~126~~121,~~400~~284,~~401~~721.6577 6058,~~159~~315,~~408~~307.0686 3129,~~411~~994,~~486~~008.9886 Ending scheduled Balance ~~121~~113,~~284~~903,~~721~~860.7787 5854,~~315~~352,~~307~~231.8695 2927,~~994~~416,~~008~~717.8627 Record Date 1011/3130/2004 1011/3130/2004 1011/3130/2004 Principal And Interest Constant ~~821~~789,~~986~~353.8618 ~~392~~381,~~693~~039.0785 ~~227~~217,~~913~~858.4104 Scheduled Principal ~~117~~113,~~795~~809.3160 5756,~~859~~479.4428 2423,~~406~~485.7179 Unscheduled Principal 47,~~997~~267,~~884~~051.5730 13,~~786~~906,~~240~~596.7663 12,~~393~~553,~~071~~805.4180 Scheduled Interest ~~704~~675,~~191~~543.5558 ~~334~~324,~~833~~560.6357 ~~203~~194,~~506~~372.7025 Servicing Fees 2625,~~333~~267.4463 12,~~533~~149.1900 6,~~544~~248.0776 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee ~~789~~758.9705 ~~376~~364.0046 ~~196~~187.3146 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 65,~~031~~604.9518 3,~~555~~390.1481 ~~798~~788.8832 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 ~~671~~643,~~036~~913.1972 ~~318~~308,~~369~~656.30 ~~195~~187,~~967~~147.4471 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 6.~~370576~~370930 6.~~350513~~351462 7.~~486462~~487404

Group Level Collateral Statement Group G4 15Y Jumbo AltA G5 15Y Conf AltA Total Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 5.~~848186~~848495 6.~~683259~~672996 6.~~691668~~685423 Weighted Average Net Rate 5.~~598185~~598494 6.~~433260~~422995 6.~~441668~~435423 Weighted Average Maturity ~~166~~165 ~~166~~165 ~~228~~227 Beginning Loan Count 76 ~~131~~130 1,~~170~~133 Loans Paid In Full 0 1 378 64 Ending Loan Count 7675 ~~130~~122 1,~~133~~069 Beginning Scheduled Balance 38,~~277~~130,~~028~~866.33 19 18,~~112~~833,~~650~~756.7339 ~~275~~266,~~360~~558,~~975~~661.7507 Ending scheduled Balance 3837,~~130~~382,~~866~~979.1926 1817,~~833~~818,~~756~~224.3924 ~~266~~250,~~558~~874,~~661~~013.0759 Record Date 1011/3130/2004 1011/3130/2004 1011/3130/2004 Principal And Interest Constant 330,390.84 ~~154~~153,~~818~~213.4315 1,~~927~~871,~~802~~855.6106 Scheduled Principal ~~143~~144,~~848~~550.2070 48,~~372~~481.7784 ~~392~~386,~~282~~807.4321 Unscheduled Principal 2603,~~313~~336.9423 ~~230~~967,~~521~~050.5731 815,~~410~~297,~~032~~840.2527 Scheduled Interest ~~186~~185,~~542~~840.6414 ~~106~~104,~~445~~731.6631 1,~~535~~485,~~520~~047.1885 Servicing Fees 7,~~974~~943.3994 3,~~981~~923.7871 5755,~~366~~533.8704 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee ~~239~~238.2231 ~~119~~117.4670 1,~~720~~665.9698 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 3,~~888~~873.8994 ~~246~~245.1724 1413,~~521~~902.0349 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 ~~174~~173,~~440~~783.1495 ~~102~~100,~~098~~444.2566 1,~~461~~413,~~911~~946.3234 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.~~468767~~469079 6.~~410303~~399869 6.~~370596~~365336

Filing Compare · CSFB MORTGAGE BACKED PASS THRU CERT SERIES 2004-1