8-K 1 csf04004_sep.txt SEPTEMBER 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): September 27, 2004 CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-115435-03 54-2157813 Pooling and Servicing Agreement) (Commission 54-2157814 (State or other File Number) 54-2157815 jurisdiction 54-2157816 of Incorporation) 54-2157817 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 September 27, 2004 a distribution was made to holders of CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION, Mortgage-Backed P/T Certificates , Series 2004-4 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 2004-4 Trust, relating to the September 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 2004-4 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: 9/27/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-4 Trust , relating to the September 27, 2004 distribution. EX-99.1

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) September 13, 2004
CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
(Exact name of registrant as specified in its charter)
Delaware (State or other jurisdiction of incorporation)	333-110800 (Commission File Number)		13-3320910 (IRS Employer ID Number)
11 Madison Avenue New York, New York		10010
(Address of principal executive offices)		(Zip Code)
Registrant’s Telephone Number, including area code:		(212) 325-2000
No Change (Former name or former address, if changed since last report)

~~Check~~Certificateholder ~~the~~Distribution ~~appropriate~~Summary ~~box~~(continued) ~~below~~Current ifEnding ~~the~~Cumulative ~~Form~~Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A1 0.00 22,796,948.75 1,307,351.86 0.00 1-A2 0.00 3,056,882.00 14,647.56 0.00 1-A3 0.00 3,500,000.00 16,770.83 0.00 I-A4 0.00 6,000,000.00 30,000.00 0.00 I-A5 0.00 5,000,000.00 25,000.00 0.00 I-A6 0.00 12,300,000.00 61,500.00 0.00 I-A7 0.00 1,509,652.00 7,548.26 0.00 I-A8 0.00 1,949,925.00 9,749.63 0.00 I-A9 0.00 1,682,801.00 8,414.01 0.00 I-KA10 ~~filing~~0.00 is0.00 ~~intended~~1,366.02 to0.00 ~~simultaneously~~I-A11 ~~satisfy~~0.00 100,033,345.02 4,228,969.33 0.00 I-A12 0.00 2,459,000.00 12,295.00 0.00 I-A13 0.00 2,831,010.00 14,155.05 0.00 I-A14 0.00 25,008,336.02 982,970.02 0.00 I-A15 0.00 0.00 128,327.84 0.00 II-A1 0.00 141,641,830.09 3,184,583.60 0.00 II-A2 0.00 28,328,366.02 565,164.53 0.00 II-A3 0.00 0.00 143,864.94 0.00 II-A4 0.00 25,610,000.00 117,379.19 0.00 II-A5 0.00 17,506,698.07 180,842.46 0.00 II-A6 0.00 20,183,753.50 0.00 0.00 II-A7 0.00 1,766,078.43 0.00 0.00 II-A8 0.00 3,716,470.00 17,033.82 0.00 II-A9 0.00 3,552,906.00 16,284.16 0.00 II-A10 0.00 33,433,155.00 153,235.32 0.00 II-A11 0.00 12,100,000.00 55,458.34 0.00 III-A1 0.00 9,956,506.40 62,860.44 0.00 III-A2 0.00 9,946,294.42 45,175.11 0.00 III-A3 0.00 0.00 50,166.62 0.00 III-A4 0.00 11,500,000.00 52,708.34 0.00 III-A5 0.00 15,758,000.00 72,224.17 0.00 III-A6 0.00 9,961,653.54 66,344.68 0.00 III-A7 0.00 2,000,000.00 9,166.67 0.00 III-A8 0.00 24,830,790.26 194,708.79 0.00 III-A9 0.00 19,931,844.50 123,962.64 0.00 III-A10 0.00 22,936,000.00 105,123.34 0.00 III-A11 0.00 16,098,365.00 73,784.18 0.00 IV-A1 0.00 91,948,338.11 2,257,357.99 0.00 V-A1 0.00 43,459,380.15 1,613,706.26 0.00 V-A2 0.00 10,022,868.00 50,114.32 0.00 V-A3 0.00 16,297,267.44 560,473.47 0.00 V-A4 0.00 0.00 83,232.32 0.00 I-X 0.00 0.00 43,424.69 0.00 AX 0.00 0.00 45,153.62 0.00 DX 0.00 0.00 20,212.81 0.00 AP 0.00 11,999,218.43 44,433.31 0.00 AR 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 I-B1 0.00 7,657,816.71 45,152.35 0.00 I-B2 0.00 2,127,170.92 12,542.32 0.00 I-B3 0.00 1,276,301.95 7,525.39 0.00 I-B4 0.00 1,063,585.46 6,271.16 0.00 I-B5 0.00 1,169,944.21 6,898.28 0.00 I-B6 0.00 319,077.24 1,881.36 0.00 C-B1 0.00 6,815,051.92 38,489.51 0.00 C-B2 0.00 2,271,682.97 12,829.83 0.00 C-B3 0.00 1,135,840.99 6,414.91 0.00 C-B4 0.00 908,672.79 5,131.93 0.00 C-B5 0.00 908,672.79 5,131.93 0.00 C-B6 0.00 454,339.39 2,565.99 0.00 D-B1 0.00 5,262,529.09 30,479.94 0.00 D-B2 0.00 1,996,131.35 11,561.36 0.00 D-B3 0.00 725,865.94 4,204.12 0.00 D-B4 0.00 1,088,798.92 6,306.19 0.00 D-B5 0.00 544,399.46 3,153.10 0.00 D-B6 0.00 725,865.94 4,204.12 0.00 D-B7 0.00 1,088,798.92 6,306.19 0.00 D-B8 0.00 362,933.97 2,102.07 0.00 Totals 0.00 830,517,164.08 17,076,397.59 0.00 All distributions required by the ~~filing~~Pooling ~~obligation~~and ofServicing Agreement have been calculated by the ~~registrant~~Certificate ~~under~~Administrator ~~any~~on behalf of the ~~following provisions:~~Trustee.

~~Written~~Principal ~~communications~~Distribution ~~pursuant~~Statement toOriginal ~~Rule~~Beginning ~~425~~Scheduled ~~under~~Unscheduled ~~the~~Face ~~Securities~~Certificate ~~Act~~Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (171) ~~CFR~~I-A1 ~~230~~24,810,382.~~425)~~00 ~~Soliciting~~23,984,378.71 ~~material~~34,913.40 ~~pursuant~~1,152,516.56 to0.00 ~~Rule~~0.00 ~~14a~~1-12A2 ~~under~~3,056,882.00 ~~the~~3,056,882.00 ~~Exchange~~0.00 ~~Act~~0.00 ~~(17~~0.00 ~~CFR~~0.00 ~~240~~1-A3 3,500,000.~~14a~~00 3,500,000.00 0.00 0.00 0.00 0.00 I-A4 6,000,000.00 6,000,000.00 0.00 0.00 0.00 0.00 I-A5 5,000,000.00 5,000,000.00 0.00 0.00 0.00 0.00 I-A6 12),300,000.00 ~~Pre~~12,300,000.00 0.00 0.00 0.00 0.00 I-~~commencement~~A7 ~~communications~~1,509,652.00 ~~pursuant~~1,509,652.00 to0.00 ~~Rule~~0.00 ~~14d~~0.00 0.00 I-A8 1,949,925.00 1,949,925.00 0.00 0.00 0.00 0.00 I-A9 1,682,801.00 1,682,801.00 0.00 0.00 0.00 0.00 I-A10 0.00 0.00 0.00 0.00 0.00 0.00 I-A11 106,397,493.00 103,786,625.64 110,355.80 3,642,924.82 0.00 0.00 I-A12 2~~(d)~~,459,000.00 ~~under~~2,459,000.00 ~~the~~0.00 ~~Exchange~~0.00 ~~Act~~0.00 ~~(17~~0.00 ~~CFR~~I-A13 ~~240~~2,831,010.~~14d~~00 2,831,010.00 0.00 0.00 0.00 0.00 I-A14 26,599,373.00 25,946,656.16 27,588.95 910,731.20 0.00 0.00 I-A15 0.00 0.00 0.00 0.00 0.00 0.00 II-A1 144,800,000.00 144,225,474.11 255,917.86 2~~(b))~~,327,726.16 ~~Pre~~0.00 0.00 II-~~commencement~~A2 ~~communications~~28,960,000.00 ~~pursuant~~28,845,094.82 to51,183.57 ~~Rule~~465,545.23 ~~13e~~0.00 0.00 II-4A3 0.00 0.00 0.00 0.00 0.00 0.00 II-A4 25,610,000.00 25,610,000.00 0.00 0.00 0.00 0.00 II-A5 17,706,530.00 17,606,842.49 10,769.56 89,374.85 0.00 0.00 II-A6 20,000,000.00 20,091,666.68 0.00 0.00 (c92,086.82) ~~under~~0.00 ~~the~~II-A7 ~~Exchange~~1,750,000.00 ~~Act~~1,758,020.83 0.00 0.00 (8,057.60) 0.00 II-A8 3,716,470.00 3,716,470.00 0.00 0.00 0.00 0.00 II-A9 3,552,906.00 3,552,906.00 0.00 0.00 0.00 0.00 II-A10 33,433,155.00 33,433,155.00 0.00 0.00 0.00 0.00 II-A11 12,100,000.00 12,100,000.00 0.00 0.00 0.00 0.00 III-A1 10,000,000.00 9,979,863.21 17,793.36 ~~CFR~~5,563.46 ~~240~~0.~~13e~~00 0.00 III-A2 10,000,000.00 9,975,135.24 21,971.10 6,869.72 0.00 0.00 III-A3 0.00 0.00 0.00 0.00 0.00 0.00 III-A4 11,500,000.00 11,500,000.00 0.00 0.00 0.00 0.00 III-A5 15,758,000.00 15,758,000.00 0.00 0.00 0.00 0.00 III-A6 10,000,000.00 9,982,246.25 15,687.64 4,905.06 0.00 0.00 III-A7 2,000,000.00 2,000,000.00 0.00 0.00 0.00 0.00 III-A8 25,000,000.00 24,921,658.80 69,224.18 21,644.36 0.00 0.00 III-A9 20,000,000.00 19,968,445.17 27,882.61 8,718.07 0.00 0.00 III-A10 22,936,000.00 22,936,000.00 0.00 0.00 0.00 0.00 III-A11 16,098,365.00 16,098,365.00 0.00 0.00 0.00 0.00 IV-A1 94,190,172.00 93,775,889.88 99,324.37 1,728,227.39 0.00 0.00 V-A1 45,725,091.00 44,876,750.69 50,603.66 1,366,766.88 0.00 0.00 V-A2 10,022,868.00 10,022,868.00 0.00 0.00 0.00 0.00 V-A3 17,146,909.00 16,828,781.39 18,976.37 512,537.58 0.00 0.00 V-A4 0.00 0.00 0.00 0.00 0.00 0.00 I-X 0.00 0.00 0.00 0.00 0.00 0.00 AX 0.00 0.00 0.00 0.00 0.00 0.00 DX 0.00 0.00 0.00 0.00 0.00 0.00 AP 12,102,095.17 12,043,651.74 13,078.07 31,355.24 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 I-B1 7,671,443.00 7,664,645.83 6,829.12 0.00 0.00 0.00 I-B2 2,130,956.00 2,129,067.90 1,896.98 0.00 0.00 0.00 I-B3 1,278,573.00 1,277,440.14 1,138.19 0.00 0.00 0.00 I-B4 1,065,478.00 1,064,533.95 948.49 0.00 0.00 0.00 I-B5 1,172,026.00 1,170,987.54 1,043.34 0.00 0.00 0.00 I-B6 319,645.00 319,361.78 284.55 0.00 0.00 0.00 C-B1 6,828,756.00 6,822,272.67 7,220.75 0.00 0.00 0.00 C-B2 2,276,251.00 2,274,089.89 2,406.92 0.00 0.00 0.00 C-B3 1,138,125.00 1,137,044.45 1,203.46 0.00 0.00 0.00 C-B4 910,500.00 909,635.56 962.77 0.00 0.00 0.00 C-B5 910,500.00 909,635.56 962.77 0.00 0.00 0.00 C-B6 455,253.00 454,820.78 481.39 0.00 0.00 0.00 D-B1 5,273,245.00 5,267,903.05 5,373.95 0.00 0.00 0.00 D-B2 2,000,196.00 1,998,169.74 2,038.40 0.00 0.00 0.00 D-B3 727,344.00 726,607.18 741.23 0.00 0.00 0.00 D-B4 1,091,016.00 1,089,910.77 1,111.85 0.00 0.00 0.00 D-B5 545,508.00 544,955.38 555.93 0.00 0.00 0.00 D-B6 727,344.00 726,607.18 741.23 0.00 0.00 0.00 D-B7 1,091,016.00 1,089,910.77 1,111.85 0.00 0.00 0.00 D-B8 363,673.00 363,304.59 370.62 0.00 0.00 0.00 Totals 850,182,027.17 843,555,120.52 862,694.29 12,275,406.58 (c100,144.42) 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.

~~Item~~Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution I-A1 1,187,429.96 22,796,948.75 0.91884715 1,187,429.96 1-A2 0.00 3,056,882.00 1.00000000 0.00 1-A3 0.00 3,500,000.00 1.00000000 0.00 I-A4 0.00 6,000,000.00 1.00000000 0.00 I-A5 0.00 5,000,000.00 1.00000000 0.00 I-A6 0.00 12,300,000.00 1.00000000 0.00 I-A7 0.00 1,509,652.00 1.00000000 0.00 I-A8 0.00 1,949,925.00 1.00000000 0.00 I-A9 0.00 1,682,801.00 1.00000000 0.00 I-A10 0.00 0.00 0.00000000 0.00 I-A11 3,753,280.62 100,033,345.02 0.94018517 3,753,280.62 I-A12 0.00 2,459,000.00 1.00000000 0.00 I-A13 0.00 2,831,010.00 1.00000000 0.00 I-A14 938,320.15 25,008,336.02 0.94018517 938,320.15 I-A15 0.00 0.00 0.00000000 0.00 II-A1 2,583,644.02 141,641,830.09 0.97818943 2,583,644.02 II-A2 516,728.80 28,328,366.02 0.97818943 516,728.80 II-A3 0.00 0.00 0.00000000 0.00 II-A4 0.00 25,610,000.00 1.00000000 0.00 II-A5 100,144.42 17,506,698.07 0.98871422 100,144.42 II-A6 (92,086.82) 20,183,753.50 1.00918768 (92,086.82) II-A7 (8,057.0160) 1,766,078.43 1.00918767 (8,057.60) II-A8 0.00 3,716,470.00 1.00000000 0.00 II-A9 0.00 3,552,906.00 1.00000000 0.00 II-A10 0.00 33,433,155.00 1.00000000 0.00 II-A11 0.00 12,100,000.00 1.00000000 0.00 III-A1 23,356.81 9,956,506.40 0.99565064 23,356.81 III-A2 28,840.82 9,946,294.42 0.99462944 28,840.82 III-A3 0.00 0.00 0.00000000 0.00 III-A4 0.00 11,500,000.00 1.00000000 0.00 III-A5 0.00 15,758,000.00 1.00000000 0.00 III-A6 20,592.71 9,961,653.54 0.99616535 20,592.71 III-A7 0.00 2,000,000.00 1.00000000 0.00 III-A8 90,868.54 24,830,790.26 0.99323161 90,868.54 III-A9 36,600.68 19,931,844.50 0.99659222 36,600.68 III-A10 0.00 22,936,000.00 1.00000000 0.00 III-A11 0.00 16,098,365.00 1.00000000 0.00 IV-A1 1,827,551.77 91,948,338.11 0.97619886 1,827,551.77 V-A1 1,417,370.54 43,459,380.15 0.95044929 1,417,370.54 V-A2 0.00 10,022,868.00 1.00000000 0.00 V-A3 531,513.95 16,297,267.44 0.95044929 531,513.95 V-A4 0.00 0.00 0.00000000 0.00 I-X 0.00 0.00 0.00000000 0.00 AX 0.00 0.00 0.00000000 0.00 DX 0.00 0.00 0.00000000 0.00 AP 44,433.31 11,999,218.43 0.99149926 44,433.31 AR 0.00 0.00 0.00000000 0.00 AR-L 0.00 0.00 0.00000000 0.00 I-B1 6,829.12 7,657,816.71 0.99822376 6,829.12 I-B2 1,896.98 2,127,170.92 0.99822376 1,896.98 I-B3 1,138.19 1,276,301.95 0.99822376 1,138.19 I-B4 948.49 1,063,585.46 0.99822376 948.49 I-B5 1,043.34 1,169,944.21 0.99822377 1,043.34 I-B6 284.55 319,077.24 0.99822378 284.55 C-B1 7,220.75 6,815,051.92 0.99799318 7,220.75 C-B2 2,406.92 2,271,682.97 0.99799318 2,406.92 C-B3 1,203.46 1,135,840.99 0.99799318 1,203.46 C-B4 962.77 908,672.79 0.99799318 962.77 C-B5 962.77 908,672.79 0.99799318 962.77 C-B6 481.39 454,339.39 0.99799318 481.39 D-B1 5,373.95 5,262,529.09 0.99796787 5,373.95 D-B2 2,038.40 1,996,131.35 0.99796787 2,038.40 D-B3 741.23 725,865.94 0.99796787 741.23 D-B4 1,111.85 1,088,798.92 0.99796788 1,111.85 D-B5 555.93 544,399.46 0.99796788 555.93 D-B6 741.23 725,865.94 0.99796787 741.23 D-B7 1,111.85 1,088,798.92 0.99796788 1,111.85 D-B8 370.62 362,933.97 0.99796787 370.62 Totals 13,037,956.47 830,517,164.08 0.97686982 13,037,956.47

~~Other~~Principal ~~Events~~Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A1 24,810,382.00 966.70735299 1.40720929 46.45299536 0.00000000 1-A2 3,056,882.00 1000.00000000 0.00000000 0.00000000 0.00000000 1-A3 3,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A4 6,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A5 5,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A6 12,300,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A7 1,509,652.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A8 1,949,925.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A9 1,682,801.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A10 0.00 0.00000000 0.00000000 0.00000000 0.00000000 I-A11 106,397,493.00 975.46119475 1.03720301 34.23882196 0.00000000 I-A12 2,459,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A13 2,831,010.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A14 26,599,373.00 975.46119452 1.03720302 34.23882210 0.00000000 I-A15 0.00 0.00000000 0.00000000 0.00000000 0.00000000 II-A1 144,800,000.00 996.03227977 1.76738854 16.07545691 0.00000000 II-A2 28,960,000.00 996.03227970 1.76738847 16.07545684 0.00000000 II-A3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 II-A4 25,610,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 II-A5 17,706,530.00 994.37001434 0.60822533 5.04756437 0.00000000 II-A6 20,000,000.00 1004.58333400 0.00000000 0.00000000 (4.60434100) II-A7 1,750,000.00 1004.58333143 0.00000000 0.00000000 (4.60434286) II-A8 3,716,470.00 1000.00000000 0.00000000 0.00000000 0.00000000 II-A9 3,552,906.00 1000.00000000 0.00000000 0.00000000 0.00000000 II-A10 33,433,155.00 1000.00000000 0.00000000 0.00000000 0.00000000 II-A11 12,100,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A1 10,000,000.00 997.98632100 1.77933600 0.55634600 0.00000000 III-A2 10,000,000.00 997.51352400 2.19711000 0.68697200 0.00000000 III-A3 0.00 0.00000000 0.00000000 0.00000000 0.00000000 III-A4 11,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A5 15,758,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A6 10,000,000.00 998.22462500 1.56876400 0.49050600 0.00000000 III-A7 2,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A8 25,000,000.00 996.86635200 2.76896720 0.86577440 0.00000000 III-A9 20,000,000.00 998.42225850 1.39413050 0.43590350 0.00000000 III-A10 22,936,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A11 16,098,365.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A1 94,190,172.00 995.60164175 1.05450885 18.34827725 0.00000000 V-A1 45,725,091.00 981.44694102 1.10669348 29.89096030 0.00000000 V-A2 10,022,868.00 1000.00000000 0.00000000 0.00000000 0.00000000 V-A3 17,146,909.00 981.44694125 1.10669334 29.89096052 0.00000000 V-A4 0.00 0.00000000 0.00000000 0.00000000 0.00000000 I-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 AX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 DX 0.00 0.00000000 0.00000000 0.00000000 0.00000000 AP 12,102,095.17 995.17080066 1.08064511 2.59089352 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 I-B1 7,671,443.00 999.11396461 0.89020019 0.00000000 0.00000000 I-B2 2,130,956.00 999.11396575 0.89020139 0.00000000 0.00000000 I-B3 1,278,573.00 999.11396533 0.89020338 0.00000000 0.00000000 I-B4 1,065,478.00 999.11396575 0.89020139 0.00000000 0.00000000 I-B5 1,172,026.00 999.11396164 0.89020209 0.00000000 0.00000000 I-B6 319,645.00 999.11395454 0.89020632 0.00000000 0.00000000 C-B1 6,828,756.00 999.05058403 1.05740343 0.00000000 0.00000000 C-B2 2,276,251.00 999.05058361 1.05740536 0.00000000 0.00000000 C-B3 1,138,125.00 999.05058759 1.05740582 0.00000000 0.00000000 C-B4 910,500.00 999.05058759 1.05740802 0.00000000 0.00000000 C-B5 910,500.00 999.05058759 1.05740802 0.00000000 0.00000000 C-B6 455,253.00 999.05059385 1.05741203 0.00000000 0.00000000 D-B1 5,273,245.00 998.98697102 1.01909735 0.00000000 0.00000000 D-B2 2,000,196.00 998.98696928 1.01910013 0.00000000 0.00000000 D-B3 727,344.00 998.98697178 1.01909138 0.00000000 0.00000000 D-B4 1,091,016.00 998.98697178 1.01909596 0.00000000 0.00000000 D-B5 545,508.00 998.98696261 1.01910513 0.00000000 0.00000000 D-B6 727,344.00 998.98697178 1.01909138 0.00000000 0.00000000 D-B7 1,091,016.00 998.98697178 1.01909596 0.00000000 0.00000000 D-B8 363,673.00 998.98697456 1.01910233 0.00000000 0.00000000

~~Credit~~Principal ~~Suisse~~Distribution ~~First~~Factors ~~Boston~~Statement ~~Mortgage~~(continued) ~~Securities~~Total ~~Corp.~~Ending ~~(the~~Ending ~~“Company”~~Total Realized Principal Certificate Certificate Principal Class Loss (3) ~~entered~~Reduction ~~into~~Balance aPercentage ~~Pooling~~Distribution ~~and~~I-A1 ~~Servicing~~0.00000000 ~~Agreement~~47.86020465 ~~dated~~918.84714834 as0.91884715 of47.86020465 ~~July~~1-A2 0.00000000 0.00000000 1,000.00000000 ~~2004~~1.00000000 ~~(the~~0.00000000 ~~“Agreement”)~~1-A3 ~~among~~0.00000000 ~~the~~0.00000000 ~~Credit~~1,000.00000000 ~~Suisse~~1.00000000 ~~First~~0.00000000 ~~Boston~~I-A4 ~~Mortgage~~0.00000000 ~~Securities~~0.00000000 ~~Corp~~1,000.00000000 as1.00000000 ~~depositor,~~0.00000000 ~~(the~~I-A5 ~~“Depositor”)~~0.00000000 0.00000000 1,000.00000000 U1.S00000000 0.00000000 ~~Bank,~~I-A6 ~~National~~0.00000000 ~~Association~~0.00000000 1,000.00000000 as1.00000000 ~~trustee~~0.00000000 ~~(in~~I-A7 ~~such~~0.00000000 ~~capacity~~0.00000000 1,000.00000000 ~~the~~1.00000000 ~~“Trustee”),~~0.00000000 ~~Wells~~I-A8 ~~Fargo~~0.00000000 ~~Bank~~0.00000000 1,000.00000000 N1.A00000000 0.00000000 I-A9 0.00000000 0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~servicer~~I-A10 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity~~0.00000000 0.00000000 0.00000000 I-A11 0.00000000 35.27602497 940.18516978 0.94018517 35.27602497 I-A12 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Serivcer”)~~0.00000000 I-A13 0.00000000 0.00000000 1,000.00000000 ~~master~~1.00000000 ~~servicer~~0.00000000 ~~(in~~I-A14 ~~such~~0.00000000 ~~capacity~~35.27602512 940.18516978 0.94018517 35.27602512 I-A15 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A1 0.00000000 17.84284544 978.18943432 0.97818943 17.84284544 II-A2 0.00000000 17.84284530 978.18943439 0.97818943 17.84284530 II-A3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A4 0.00000000 0.00000000 1,000.00000000 ~~the~~1.00000000 ~~“Master~~0.00000000 ~~Servicer”)~~II-A5 ~~and~~0.00000000 as5.65579026 ~~trust~~988.71422407 ~~administrator~~0.98871422 ~~(in~~5.65579026 ~~such~~II-A6 ~~capacity~~0.00000000 (4.60434100) 1,009.18767500 ~~the~~1.00918768 ~~“Trust~~(4.60434100) ~~Administrator”~~II-A7 0.00000000 (4.60434286) 1,009.18767429 ~~DLJ~~1.00918767 ~~Mortgage~~(4.60434286) ~~Capital~~II-A8 0.00000000 0.00000000 1,000.00000000 ~~Inc~~1.00000000 0.00000000 II-A9 0.00000000 0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~seller~~II-A10 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity~~1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 II-A11 0.00000000 0.00000000 1,000.00000000 ~~Washington~~1.00000000 ~~Mutual~~0.00000000 ~~Mortgage~~III-A1 ~~Securities~~0.00000000 ~~Corp~~2.33568100 995.65064000 0.99565064 2.33568100 III-A2 0.00000000 2.88408200 994.62944200 0.99462944 2.88408200 III-A3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 III-A4 0.00000000 0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~seller~~III-A5 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity~~1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 ~~and~~III-A6 a0.00000000 ~~servicer~~2.05927100 ~~(in~~996.16535400 ~~such~~0.99616535 ~~capacity~~2.05927100 III-A7 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Servicer”)~~0.00000000 III-A8 0.00000000 3.63474160 993.23161040 0.99323161 3.63474160 III-A9 0.00000000 1.83003400 996.59222500 0.99659222 1.83003400 III-A10 0.00000000 0.00000000 1,000.00000000 ~~GreenPoint~~1.00000000 ~~Mortgage~~0.00000000 ~~Funding~~III-A11 0.00000000 0.00000000 1,000.00000000 ~~Inc~~1.00000000 as0.00000000 aIV-A1 ~~seller~~0.00000000 ~~and~~19.40278621 a976.19885555 ~~servicer~~0.97619886 as19.40278621 aV-A1 ~~seller~~0.00000000 ~~(in~~30.99765378 ~~such~~950.44928724 ~~capacity~~0.95044929 30.99765378 V-A2 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 ~~and~~V-A3 a0.00000000 ~~servicer~~30.99765386 ~~(in~~950.44928739 ~~such~~0.95044929 ~~capacity,~~30.99765386 aV-A4 ~~“Servicer”)~~0.00000000 ~~and Select~~0.00000000 ~~Portfolio~~0.00000000 ~~Servicing,~~0.00000000 ~~Inc~~0.00000000 ~~(“SPS”),~~I-X as0.00000000 a0.00000000 ~~servicer~~0.00000000 ~~and~~0.00000000 ~~special~~0.00000000 ~~servicer~~AX as0.00000000 a0.00000000 ~~servicer~~0.00000000 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity,~~DX a0.00000000 ~~“Serivcer”)~~0.00000000 ~~and~~0.00000000 as0.00000000 ~~special~~0.00000000 ~~servicer~~AP ~~(in~~0.00000000 ~~such~~3.67153864 ~~capacity,~~991.49926202 ~~the~~0.99149926 ~~“Special~~3.67153864 ~~Servicer”)~~AR ~~providing~~0.00000000 ~~for~~0.00000000 ~~the~~0.00000000 ~~issuance~~0.00000000 of0.00000000 ~~the~~AR-L ~~CSFB~~0.00000000 ~~Mortgage~~0.00000000 0.00000000 0.00000000 0.00000000 I-~~Backed~~B1 ~~Pass~~0.00000000 0.89020019 998.22376442 0.99822376 0.89020019 I-~~Through~~B2 ~~Certificates,~~0.00000000 ~~Series~~0.89020139 ~~2004~~998.22376436 0.99822376 0.89020139 I-4B3 0. ~~The~~00000000 ~~Certificates~~0.89020338 ~~were~~998.22376196 ~~issued~~0.99822376 on0.89020338 ~~July~~I-B4 ~~30,~~0.00000000 ~~2004~~0.89020139 ~~The~~998.22376436 ~~Pooling~~0.99822376 ~~and~~0.89020139 ~~Servicing~~I-B5 ~~Agreement~~0.00000000 is0.89020209 ~~annexed~~998.22376807 ~~hereto~~0.99822377 as0.89020209 ~~Exhibit~~I-B6 990.00000000 0.89020632 998.22377951 0.99822378 0.89020632 C-B1 0.00000000 1.05740343 997.99318060 0.99799318 1.05740343 C-B2 0.00000000 1.05740536 997.99317826 0.99799318 1.05740536 C-B3 0.00000000 1.05740582 997.99318177 0.99799318 1.05740582 C-B4 0.00000000 1.05740802 997.99317957 0.99799318 1.05740802 C-B5 0.00000000 1.05740802 997.99317957 0.99799318 1.05740802 C-B6 0.00000000 1.05741203 997.99318181 0.99799318 1.05741203 D-B1 0.00000000 1.01909735 997.96787178 0.99796787 1.01909735 D-B2 0.00000000 1.01910013 997.96787415 0.99796787 1.01910013 D-B3 0.00000000 1.01909138 997.96786665 0.99796787 1.01909138 D-B4 0.00000000 1.01909596 997.96787581 0.99796788 1.01909596 D-B5 0.00000000 1.01910513 997.96787581 0.99796788 1.01910513 D-B6 0.00000000 1.01909138 997.96786665 0.99796787 1.01909138 D-B7 0.00000000 1.01909596 997.96787581 0.99796788 1.01909596 D-B8 0.00000000 1.01910233 997.96787224 0.99796787 1.01910233 (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.

~~Item~~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 24,810,382.00 6.00000% 23,984,378.71 119,921.89 0.00 0.00 1-A2 3,056,882.00 5.75000% 3,056,882.00 14,647.56 0.00 0.00 1-A3 3,500,000.00 5.75000% 3,500,000.00 16,770.83 0.00 0.00 I-A4 6,000,000.00 6.00000% 6,000,000.00 30,000.00 0.00 0.00 I-A5 5,000,000.00 6.00000% 5,000,000.00 25,000.00 0.00 0.00 I-A6 12,300,000.00 6.00000% 12,300,000.00 61,500.00 0.00 0.00 I-A7 1,509,652.00 6.00000% 1,509,652.00 7,548.26 0.00 0.00 I-A8 1,949,925.00 6.00000% 1,949,925.00 9,749.63 0.00 0.00 I-A9 1,682,801.00 6.00000% 1,682,801.00 8,414.01 0. ~~Financial~~00 ~~Statements~~0.00 ~~and~~I-A10 ~~Exhibits~~0.00 6.00000% 273,203.42 1,366.02 0.00 0.00 I-A11 106,397,493.00 5.50000% 103,786,625.64 475,688.70 0.00 0.00 I-A12 2,459,000.00 6.00000% 2,459,000.00 12,295.00 0.00 0.00 I-A13 2,831,010.00 6.00000% 2,831,010.00 14,155.05 0.00 0.00 I-A14 26,599,373.00 2.06500% 25,946,656.16 44,649.87 0.00 0.00 I-A15 0.00 5.93500% 25,946,656.16 128,327.84 0.00 0.00 II-A1 144,800,000.00 5.00000% 144,225,474.11 600,939.48 0.00 0.00 II-A2 28,960,000.00 2.01500% 28,845,094.82 48,435.72 0.00 0.00 II-A3 0.00 5.98500% 28,845,094.82 143,864.91 0.00 0.00 II-A4 25,610,000.00 5.50000% 25,610,000.00 117,379.17 0.00 0.00 II-A5 17,706,530.00 5.50000% 17,606,842.49 80,698.03 0.00 0.00 II-A6 20,000,000.00 5.50000% 20,091,666.68 92,086.81 0.00 0.00 II-A7 1,750,000.00 5.50000% 1,758,020.83 8,057.60 0.00 0.00 II-A8 3,716,470.00 5.50000% 3,716,470.00 17,033.82 0.00 0.00 II-A9 3,552,906.00 5.50000% 3,552,906.00 16,284.15 0.00 0.00 II-A10 33,433,155.00 5.50000% 33,433,155.00 153,235.29 0.00 0.00 II-A11 12,100,000.00 5.50000% 12,100,000.00 55,458.33 0.00 0.00 III-A1 10,000,000.00 4.75000% 9,979,863.21 39,503.63 0.00 0.00 III-A2 10,000,000.00 1.96500% 9,975,135.24 16,334.28 0.00 0.00 III-A3 0.00 6.03500% 9,975,135.24 50,166.62 0.00 0.00 III-A4 11,500,000.00 5.50000% 11,500,000.00 52,708.33 0.00 0.00 III-A5 15,758,000.00 5.50000% 15,758,000.00 72,224.17 0.00 0.00 III-A6 10,000,000.00 5.50000% 9,982,246.25 45,751.96 0.00 0.00 III-A7 2,000,000.00 5.50000% 2,000,000.00 9,166.67 0.00 0.00 III-A8 25,000,000.00 5.00000% 24,921,658.80 103,840.25 0.00 0.00 III-A9 20,000,000.00 5.25000% 19,968,445.17 87,361.95 0.00 0.00 III-A10 22,936,000.00 5.50000% 22,936,000.00 105,123.33 0.00 0.00 III-A11 16,098,365.00 5.50000% 16,098,365.00 73,784.17 0.00 0.00 IV-A1 94,190,172.00 5.50000% 93,775,889.88 429,806.16 0.00 0.00 V-A1 45,725,091.00 5.25000% 44,876,750.69 196,335.78 0.00 0.00 V-A2 10,022,868.00 6.00000% 10,022,868.00 50,114.34 0.00 0.00 V-A3 17,146,909.00 2.06500% 16,828,781.39 28,959.53 0.00 0.00 V-A4 0.00 5.93500% 16,828,781.39 83,232.35 0.00 0.00 I-X 0.00 6.00000% 8,684,937.20 43,424.69 0.00 0.00 AX 0.00 5.50000% 9,851,697.55 45,153.61 0.00 0.00 DX 0.00 5.50000% 4,410,068.65 20,212.81 0.00 0.00 AP 12,102,095.17 0.00000% 12,043,651.74 0.00 0.00 0.00 AR 50.00 6.00000% 0.00 0.00 0.00 0.00 AR-L 50.00 6.00000% 0.00 0.00 0.00 0.00 I-B1 7,671,443.00 6.00000% 7,664,645.83 38,323.23 0.00 0.00 I-B2 2,130,956.00 6.00000% 2,129,067.90 10,645.34 0.00 0.00 I-B3 1,278,573.00 6.00000% 1,277,440.14 6,387.20 0.00 0.00 I-B4 1,065,478.00 6.00000% 1,064,533.95 5,322.67 0.00 0.00 I-B5 1,172,026.00 6.00000% 1,170,987.54 5,854.94 0.00 0.00 I-B6 319,645.00 6.00000% 319,361.78 1,596.81 0.00 0.00 C-B1 6,828,756.00 5.50000% 6,822,272.67 31,268.75 0.00 0.00 C-B2 2,276,251.00 5.50000% 2,274,089.89 10,422.91 0.00 0.00 C-B3 1,138,125.00 5.50000% 1,137,044.45 5,211.45 0.00 0.00 C-B4 910,500.00 5.50000% 909,635.56 4,169.16 0.00 0.00 C-B5 910,500.00 5.50000% 909,635.56 4,169.16 0.00 0.00 C-B6 455,253.00 5.50000% 454,820.78 2,084.60 0.00 0.00 D-B1 5,273,245.00 5.71901% 5,267,903.05 25,105.99 0.00 0.00 D-B2 2,000,196.00 5.71901% 1,998,169.74 9,522.96 0.00 0.00 D-B3 727,344.00 5.71901% 726,607.18 3,462.89 0.00 0.00 D-B4 1,091,016.00 5.71901% 1,089,910.77 5,194.34 0.00 0.00 D-B5 545,508.00 5.71901% 544,955.38 2,597.17 0.00 0.00 D-B6 727,344.00 5.71901% 726,607.18 3,462.89 0.00 0.00 D-B7 1,091,016.00 5.71901% 1,089,910.77 5,194.34 0.00 0.00 D-B8 363,673.00 5.71901% 363,304.59 1,731.45 0.00 0.00 Totals 850,182,027.17 4,038,440.85 0.00 0.00

Interest Distribution Statement (acontinued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance I-A1 0.00 0.00 119,921.90 0.00 22,796,948.75 1-A2 0.00 0.00 14,647.56 0.00 3,056,882.00 1-A3 0.00 0.00 16,770.83 0.00 3,500,000.00 I-A4 0.00 0.00 30,000.00 0.00 6,000,000.00 I-A5 0.00 0.00 25,000.00 0.00 5,000,000.00 I-A6 0.00 0.00 61,500.00 0.00 12,300,000.00 I-A7 0.00 0.00 7,548.26 0.00 1,509,652.00 I-A8 0.00 0.00 9,749.63 0.00 1,949,925.00 I-A9 0.00 0.00 8,414.01 0.00 1,682,801.00 I-A10 0.00 0.00 1,366.02 0.00 273,203.42 I-A11 0.00 0.00 475,688.71 0.00 100,033,345.02 I-A12 0.00 0.00 12,295.00 0.00 2,459,000.00 I-A13 0.00 0.00 14,155.05 0.00 2,831,010.00 I-A14 0.00 0.00 44,649.87 0.00 25,008,336.02 I-A15 0.00 0.00 128,327.84 0.00 25,008,336.02 II-A1 0.00 0.00 600,939.58 0.00 141,641,830.09 II-A2 0.00 0.00 48,435.73 0.00 28,328,366.02 II-A3 0.00 0.00 143,864.94 0.00 28,369,147.15 II-A4 0.00 0.00 117,379.19 0.00 25,610,000.00 II-A5 0.00 0.00 80,698.04 0.00 17,506,698.07 II-A6 0.00 0.00 92,086.82 0.00 20,183,753.50 II-A7 0.00 0.00 8,057.60 0.00 1,766,078.43 II-A8 0.00 0.00 17,033.82 0.00 3,716,470.00 II-A9 0.00 0.00 16,284.16 0.00 3,552,906.00 II-A10 0.00 0.00 153,235.32 0.00 33,433,155.00 II-A11 0.00 0.00 55,458.34 0.00 12,100,000.00 III-A1 0.00 0.00 39,503.63 0.00 9,956,506.40 III-A2 0.00 0.00 16,334.29 0.00 9,946,294.42 III-A3 0.00 0.00 50,166.62 0.00 9,946,294.42 III-A4 0.00 0.00 52,708.34 0.00 11,500,000.00 III-A5 0.00 0.00 72,224.17 0.00 15,758,000.00 III-A6 0.00 0.00 45,751.97 0.00 9,961,653.54 III-A7 0.00 0.00 9,166.67 0.00 2,000,000.00 III-A8 0.00 0.00 103,840.25 0.00 24,830,790.26 III-A9 0.00 0.00 87,361.96 0.00 19,931,844.50 III-A10 0.00 0.00 105,123.34 0.00 22,936,000.00 III-A11 0.00 0.00 73,784.18 0.00 16,098,365.00 IV-A1 0.00 0.00 429,806.22 0.00 91,948,338.11 V-A1 0.00 0.00 196,335.72 0.00 43,459,380.15 V-A2 0.00 0.00 50,114.32 0.00 10,022,868.00 V-A3 0.00 0.00 28,959.52 0.00 16,297,267.44 V-A4 0.00 0.00 83,232.32 0.00 16,297,267.44 I-X 0.00 0.00 43,424.69 0.00 8,331,483.35 AX 0.00 0.00 45,153.62 0.00 9,759,926.34 DX 0.00 0.00 20,212.81 0.00 4,235,238.95 AP 0.00 0.00 0.00 0.00 11,999,218.43 AR 0.00 0.00 0.00 0.00 0.00 AR-L 0.00 0.00 0.00 0.00 0.00 I-B1 0.00 0.00 38,323.23 0.00 7,657,816.71 I-B2 0.00 0.00 10,645.34 0.00 2,127,170.92 I-B3 0.00 0.00 6,387.20 0.00 1,276,301.95 I-B4 0.00 0.00 5,322.67 0.00 1,063,585.46 I-B5 0.00 0.00 5,854.94 0.00 1,169,944.21 I-B6 0.00 0.00 1,596.81 0.00 319,077.24 C-B1 0.00 0.00 31,268.76 0.00 6,815,051.92 C-B2 0.00 0.00 10,422.91 0.00 2,271,682.97 C-B3 0.00 0.00 5,211.45 0.00 1,135,840.99 C-B4 0.00 0.00 4,169.16 0.00 908,672.79 C-B5 0.00 0.00 4,169.16 0.00 908,672.79 C-B6 0.00 0.00 2,084.60 0.00 454,339.39 D-B1 0.00 0.00 25,105.99 0.00 5,262,529.09 D-B2 0.00 0.00 9,522.96 0.00 1,996,131.35 D-B3 0.00 0.00 3,462.89 0.00 725,865.94 D-B4 0.00 0.00 5,194.34 0.00 1,088,798.92 D-B5 0.00 0.00 2,597.17 0.00 544,399.46 D-B6 0.00 0.00 3,462.89 0.00 725,865.94 D-B7 0.00 0.00 5,194.34 0.00 1,088,798.92 D-B8 0.00 0.00 1,731.45 0.00 362,933.97 Totals 0.00 0.00 4,038,441.12 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.

~~Not~~Interest ~~applicable~~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 24,810,382.00 6.00000% 966.70735299 4.83353662 0.00000000 0.00000000 1-A2 3,056,882.00 5.75000% 1000.00000000 4.79166680 0.00000000 0.00000000 1-A3 3,500,000.00 5.75000% 1000.00000000 4.79166571 0.00000000 0.00000000 I-A4 6,000,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A5 5,000,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A6 12,300,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A7 1,509,652.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A8 1,949,925.00 6.00000% 1000.00000000 5.00000256 0.00000000 0.00000000 I-A9 1,682,801.00 6.00000% 1000.00000000 5.00000297 0.00000000 0.00000000 I-A10 0.00 6.00000% 1000.00000000 5.00001061 0.00000000 0.00000000 I-A11 106,397,493.00 5.50000% 975.46119475 4.47086380 0.00000000 0.00000000 I-A12 2,459,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A13 2,831,010.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 I-A14 26,599,373.00 2.06500% 975.46119452 1.67860611 0.00000000 0.00000000 I-A15 0.00 5.93500% 975.46119452 4.82446861 0.00000000 0.00000000 II-A1 144,800,000.00 5.00000% 996.03227977 4.15013453 0.00000000 0.00000000 II-A2 28,960,000.00 2.01500% 996.03227970 1.67250414 0.00000000 0.00000000 II-A3 0.00 5.98500% 996.03227970 4.96771098 0.00000000 0.00000000 II-A4 25,610,000.00 5.50000% 1000.00000000 4.58333346 0.00000000 0.00000000 II-A5 17,706,530.00 5.50000% 994.37001434 4.55752934 0.00000000 0.00000000 II-A6 20,000,000.00 5.50000% 1004.58333400 4.60434050 0.00000000 0.00000000 II-A7 1,750,000.00 5.50000% 1004.58333143 4.60434286 0.00000000 0.00000000 II-A8 3,716,470.00 5.50000% 1000.00000000 4.58333311 0.00000000 0.00000000 II-A9 3,552,906.00 5.50000% 1000.00000000 4.58333263 0.00000000 0.00000000 II-A10 33,433,155.00 5.50000% 1000.00000000 4.58333322 0.00000000 0.00000000 II-A11 12,100,000.00 5.50000% 1000.00000000 4.58333306 0.00000000 0.00000000 III-A1 10,000,000.00 4.75000% 997.98632100 3.95036300 0.00000000 0.00000000 III-A2 10,000,000.00 1.96500% 997.51352400 1.63342800 0.00000000 0.00000000 III-A3 0.00 6.03500% 997.51352400 5.01666200 0.00000000 0.00000000 III-A4 11,500,000.00 5.50000% 1000.00000000 4.58333304 0.00000000 0.00000000 III-A5 15,758,000.00 5.50000% 1000.00000000 4.58333354 0.00000000 0.00000000 III-A6 10,000,000.00 5.50000% 998.22462500 4.57519600 0.00000000 0.00000000 III-A7 2,000,000.00 5.50000% 1000.00000000 4.58333500 0.00000000 0.00000000 III-A8 25,000,000.00 5.00000% 996.86635200 4.15361000 0.00000000 0.00000000 III-A9 20,000,000.00 5.25000% 998.42225850 4.36809750 0.00000000 0.00000000 III-A10 22,936,000.00 5.50000% 1000.00000000 4.58333319 0.00000000 0.00000000 III-A11 16,098,365.00 5.50000% 1000.00000000 4.58333315 0.00000000 0.00000000 IV-A1 94,190,172.00 5.50000% 995.60164175 4.56317417 0.00000000 0.00000000 V-A1 45,725,091.00 5.25000% 981.44694102 4.29383027 0.00000000 0.00000000 V-A2 10,022,868.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 V-A3 17,146,909.00 2.06500% 981.44694125 1.68890673 0.00000000 0.00000000 V-A4 0.00 5.93500% 981.44694125 4.85407312 0.00000000 0.00000000 I-X 0.00 6.00000% 991.00879460 4.95504443 0.00000000 0.00000000 AX 0.00 5.50000% 1014.72819889 4.65083719 0.00000000 0.00000000 DX 0.00 5.50000% 987.42204214 4.52568332 0.00000000 0.00000000 AP 12,102,095.17 0.00000% 995.17080066 0.00000000 0.00000000 0.00000000 AR 50.00 6.00000% 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 50.00 6.00000% 0.00000000 0.00000000 0.00000000 0.00000000 I-B1 7,671,443.00 6.00000% 999.11396461 4.99556993 0.00000000 0.00000000 I-B2 2,130,956.00 6.00000% 999.11396575 4.99557006 0.00000000 0.00000000 I-B3 1,278,573.00 6.00000% 999.11396533 4.99556928 0.00000000 0.00000000 I-B4 1,065,478.00 6.00000% 999.11396575 4.99557006 0.00000000 0.00000000 I-B5 1,172,026.00 6.00000% 999.11396164 4.99557177 0.00000000 0.00000000 I-B6 319,645.00 6.00000% 999.11395454 4.99557321 0.00000000 0.00000000 C-B1 6,828,756.00 5.50000% 999.05058403 4.57898188 0.00000000 0.00000000 C-B2 2,276,251.00 5.50000% 999.05058361 4.57898096 0.00000000 0.00000000 C-B3 1,138,125.00 5.50000% 999.05058759 4.57897858 0.00000000 0.00000000 C-B4 910,500.00 5.50000% 999.05058759 4.57897858 0.00000000 0.00000000 C-B5 910,500.00 5.50000% 999.05058759 4.57897858 0.00000000 0.00000000 C-B6 455,253.00 5.50000% 999.05059385 4.57899234 0.00000000 0.00000000 D-B1 5,273,245.00 5.71901% 998.98697102 4.76101338 0.00000000 0.00000000 D-B2 2,000,196.00 5.71901% 998.98696928 4.76101342 0.00000000 0.00000000 D-B3 727,344.00 5.71901% 998.98697178 4.76100717 0.00000000 0.00000000 D-B4 1,091,016.00 5.71901% 998.98697178 4.76101175 0.00000000 0.00000000 D-B5 545,508.00 5.71901% 998.98696261 4.76101175 0.00000000 0.00000000 D-B6 727,344.00 5.71901% 998.98697178 4.76100717 0.00000000 0.00000000 D-B7 1,091,016.00 5.71901% 998.98697178 4.76101175 0.00000000 0.00000000 D-B8 363,673.00 5.71901% 998.98697456 4.76100783 0.00000000 0.00000000 (5) Per $1 denomination.

Interest Distribution Factors Statement (bcontinued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance I-A1 0.00000000 0.00000000 4.83353702 0.00000000 918.84714834 1-A2 0.00000000 0.00000000 4.79166680 0.00000000 1000.00000000 1-A3 0.00000000 0.00000000 4.79166571 0.00000000 1000.00000000 I-A4 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A5 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A6 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A7 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A8 0.00000000 0.00000000 5.00000256 0.00000000 1000.00000000 I-A9 0.00000000 0.00000000 5.00000297 0.00000000 1000.00000000 I-A10 0.00000000 0.00000000 5.00001061 0.00000000 1000.00000000 I-A11 0.00000000 0.00000000 4.47086390 0.00000000 940.18516978 I-A12 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A13 0.00000000 0.00000000 5.00000000 0.00000000 1000.00000000 I-A14 0.00000000 0.00000000 1.67860611 0.00000000 940.18516978 I-A15 0.00000000 0.00000000 4.82446861 0.00000000 940.18516978 II-A1 0.00000000 0.00000000 4.15013522 0.00000000 978.18943432 II-A2 0.00000000 0.00000000 1.67250449 0.00000000 978.18943439 II-A3 0.00000000 0.00000000 4.96771202 0.00000000 979.59762258 II-A4 0.00000000 0.00000000 4.58333424 0.00000000 1000.00000000 II-A5 0.00000000 0.00000000 4.55752991 0.00000000 988.71422407 II-A6 0.00000000 0.00000000 4.60434100 0.00000000 1009.18767500 II-A7 0.00000000 0.00000000 4.60434286 0.00000000 1009.18767429 II-A8 0.00000000 0.00000000 4.58333311 0.00000000 1000.00000000 II-A9 0.00000000 0.00000000 4.58333544 0.00000000 1000.00000000 II-A10 0.00000000 0.00000000 4.58333412 0.00000000 1000.00000000 II-A11 0.00000000 0.00000000 4.58333388 0.00000000 1000.00000000 III-A1 0.00000000 0.00000000 3.95036300 0.00000000 995.65064000 III-A2 0.00000000 0.00000000 1.63342900 0.00000000 994.62944200 III-A3 0.00000000 0.00000000 5.01666200 0.00000000 994.62944200 III-A4 0.00000000 0.00000000 4.58333391 0.00000000 1000.00000000 III-A5 0.00000000 0.00000000 4.58333354 0.00000000 1000.00000000 III-A6 0.00000000 0.00000000 4.57519700 0.00000000 996.16535400 III-A7 0.00000000 0.00000000 4.58333500 0.00000000 1000.00000000 III-A8 0.00000000 0.00000000 4.15361000 0.00000000 993.23161040 III-A9 0.00000000 0.00000000 4.36809800 0.00000000 996.59222500 III-A10 0.00000000 0.00000000 4.58333362 0.00000000 1000.00000000 III-A11 0.00000000 0.00000000 4.58333377 0.00000000 1000.00000000 IV-A1 0.00000000 0.00000000 4.56317481 0.00000000 976.19885555 V-A1 0.00000000 0.00000000 4.29382896 0.00000000 950.44928724 V-A2 0.00000000 0.00000000 4.99999800 0.00000000 1000.00000000 V-A3 0.00000000 0.00000000 1.68890615 0.00000000 950.44928739 V-A4 0.00000000 0.00000000 4.85407137 0.00000000 950.44928739 I-X 0.00000000 0.00000000 4.95504443 0.00000000 950.67737185 AX 0.00000000 0.00000000 4.65083822 0.00000000 1005.27573304 DX 0.00000000 0.00000000 4.52568332 0.00000000 948.27736819 AP 0.00000000 0.00000000 0.00000000 0.00000000 991.49926202 AR 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-B1 0.00000000 0.00000000 4.99556993 0.00000000 998.22376442 I-B2 0.00000000 0.00000000 4.99557006 0.00000000 998.22376436 I-B3 0.00000000 0.00000000 4.99556928 0.00000000 998.22376196 I-B4 0.00000000 0.00000000 4.99557006 0.00000000 998.22376436 I-B5 0.00000000 0.00000000 4.99557177 0.00000000 998.22376807 I-B6 0.00000000 0.00000000 4.99557321 0.00000000 998.22377951 C-B1 0.00000000 0.00000000 4.57898335 0.00000000 997.99318060 C-B2 0.00000000 0.00000000 4.57898096 0.00000000 997.99317826 C-B3 0.00000000 0.00000000 4.57897858 0.00000000 997.99318177 C-B4 0.00000000 0.00000000 4.57897858 0.00000000 997.99317957 C-B5 0.00000000 0.00000000 4.57897858 0.00000000 997.99317957 C-B6 0.00000000 0.00000000 4.57899234 0.00000000 997.99318181 D-B1 0.00000000 0.00000000 4.76101338 0.00000000 997.96787178 D-B2 0.00000000 0.00000000 4.76101342 0.00000000 997.96787415 D-B3 0.00000000 0.00000000 4.76100717 0.00000000 997.96786665 D-B4 0.00000000 0.00000000 4.76101175 0.00000000 997.96787581 D-B5 0.00000000 0.00000000 4.76101175 0.00000000 997.96787581 D-B6 0.00000000 0.00000000 4.76100717 0.00000000 997.96786665 D-B7 0.00000000 0.00000000 4.76101175 0.00000000 997.96787581 D-B8 0.00000000 0.00000000 4.76100783 0.00000000 997.96787224 (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.

~~Not~~CERTIFICATEHOLDER ~~applicable~~ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 17,264,590.99 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 6,027.23 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 17,270,618.22 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 194,220.63 Payment of Interest and Principal 17,076,397.59 Total Withdrawals (Pool Distribution Amount) 17,270,618.22 Ending Balance 0.00

~~(c)~~PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0.00 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00

~~Exhibits:~~SERVICING FEES Gross Servicing Fee 175,689.62 External MS Fee 13,637.53 PMI Fee 1,379.61 Trust Administrator Fee 3,513.87 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 194,220.63

99Delinquency Status By Groups DELINQUENT BANKRUPTCY FORECLOSURE REO Total G1 30Y 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 1 0 0 0 1 958,342.26 0.00 0.00 0.00 958,342.26 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 1 0 0 0 1 958,342.26 0.00 0.00 0.00 958,342.26 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.238095% 0.000000% 0.000000% 0.000000% 0.238095% 0.471628% 0.000000% 0.000000% 0.000000% 0.471628% 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 0.238095% 0.000000% 0.000000% 0.000000% 0.238095% 0.471628% 0.000000% 0.000000% 0.000000% 0.471628%

~~The~~DELINQUENT ~~Pooling~~BANKRUPTCY ~~and~~FORECLOSURE ~~Servicing~~REO ~~Agreement~~Total ~~dated~~G2 as30Y Jumbo A No of ~~July~~Loans 1,No ~~2004,~~of byLoans ~~and~~No ~~among~~of ~~the~~Loans ~~Company,~~No ~~the~~of ~~Sellers,~~Loans ~~the~~No ~~Servicers,~~of ~~the~~Loans ~~Special~~Principal ~~Servicer,~~Balance ~~the~~Principal ~~Master~~Balance ~~Servicer,~~Principal ~~the~~Balance ~~Trustee~~Principal ~~and~~Balance ~~the~~Principal ~~Trust~~Balance ~~Administrator~~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%

~~SIGNATURES~~DELINQUENT BANKRUPTCY FORECLOSURE REO Total G3 30Y Jumbo A 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%

~~Pursuant~~DELINQUENT toBANKRUPTCY ~~the~~FORECLOSURE ~~requirements~~REO Total G4 30Y Conf AltA No of ~~the~~Loans ~~Securities~~No ~~Exchange~~of ~~Act~~Loans No of ~~1934,~~Loans ~~the~~No ~~registrant~~of ~~duly~~Loans ~~caused~~No ~~this~~of ~~report~~Loans toPrincipal beBalance ~~signed~~Principal onBalance ~~its~~Principal ~~behalf~~Balance byPrincipal ~~the~~Balance ~~undersigned~~Principal ~~hereunto~~Balance ~~duly~~0-29 ~~authorized~~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%

~~CREDIT~~DELINQUENT ~~SUISSE~~BANKRUPTCY ~~FIRST~~FORECLOSURE ~~BOSTON~~REO ~~MORTGAGE~~Total ~~SECURITIES~~G5 ~~CORP~~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 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%

~~By:~~COLLATERAL ~~/s/~~STATEMENT ~~Kevin~~Collateral ~~Steele~~ Description Mixed Fixed Weighted Average Gross Coupon 6.021327% Weighted Average Net Coupon 5.757250% Weighted Average Pass-Through Rate 5.744959% Weighted Average Maturity(Stepdown Calculation ) 358 Beginning Scheduled Collateral Loan Count 2,382 Number Of Loans Paid In Full (59) Ending Scheduled Collateral Loan Count 2,441 Beginning Scheduled Collateral Balance 798,355,121.70 Ending Scheduled Collateral Balance 830,517,165.25 Ending Actual Collateral Balance at 31-Aug-2004 831,170,105.31 Monthly P &I Constant 5,083,212.39 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Scheduled Principal 851,673.40 Unscheduled Principal 12,186,283.05

~~Name:~~Group ~~Kevin~~Level ~~Steele~~Collateral Statement Group G1 30Y Jumbo AltA G2 30Y Jumbo A G3 30Y Jumbo A Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 6.492183 5.812354 5.780016 Weighted Average Net Rate 6.242182 5.518953 5.530016 Weighted Average Maturity 358 358 358 Beginning Loan Count 431 493 302 Loans Paid In Full 11 (89) 0 Ending Loan Count 420 582 302 Beginning Scheduled Balance 208,955,318.41 258,949,228.46 150,217,281.70 Ending scheduled Balance 203,045,442.72 301,033,681.93 150,008,567.40 Record Date 08/31/2004 08/31/2004 08/31/2004 Principal And Interest Constant 1,316,609.68 1,793,111.10 883,820.44 Scheduled Principal 186,129.61 321,111.62 160,271.82 Unscheduled Principal 5,723,746.08 2,549,496.83 48,442.48 Scheduled Interest 1,130,480.07 1,471,999.48 723,548.62 Servicing Fees 43,532.39 63,313.39 31,295.29 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 5,358.17 6,617.39 3,526.20 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 1,081,589.51 1,402,068.70 688,727.13 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 6.211411 5.536225 5.501848

~~Title:~~Group ~~Vice~~Level ~~President~~Collateral Statement Group G4 30Y Conf AltA G5 30Y Conf AltA Total Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 5.814486 6.307053 6.021327 Weighted Average Net Rate 5.564486 6.057053 5.757250 Weighted Average Maturity 358 358 358 Beginning Loan Count 611 545 2,382 Loans Paid In Full 9 10 (59) Ending Loan Count 602 535 2,441 Beginning Scheduled Balance 101,768,786.62 78,464,506.51 798,355,121.70 Ending scheduled Balance 99,928,773.06 76,500,700.14 830,517,165.25 Record Date 08/31/2004 08/31/2004 08/31/2004 Principal And Interest Constant 601,004.85 488,666.32 5,083,212.39 Scheduled Principal 107,893.84 76,266.51 851,673.40 Unscheduled Principal 1,732,119.72 1,887,539.86 11,941,344.97 Scheduled Interest 493,111.01 412,399.81 4,231,538.99 Servicing Fees 21,201.82 16,346.73 175,689.62 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 465.22 2,564.03 18,531.01 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 471,443.97 393,489.05 4,037,318.36 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 5.559001 6.017840 5.744959

~~Dated:~~Miscellaneous ~~September~~Reporting ~~13,~~Group ~~2004~~G1 30Y Jumbo AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Adjustment Amount 0.00 Substitution Amount 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G2 30Y Jumbo A Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Adjustment Amount 0.00 Substitution Amount 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G3 30Y Jumbo A Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Adjustment Amount 0.00 Substitution Amount 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00

~~Exhibit~~Miscellaneous ~~Index~~Reporting Group G4 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Adjustment Amount 0.00 Substitution Amount 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G5 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Adjustment Amount 0.00 Substitution Amount 0.00 Subsequent Losses 0.00 Subsequent Loss Recoveries 0.00

Group

Exhibit

Page

99.1

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

by and among the Company, the Sellers, the Servicers, the

Special Servicer, the Master Servicer, the Trust Administrator

and the Trustee.

Filing Compare · CSFB Mortgage-Backed Pass-Through Certificates, Series 2004-4