8-K 1 bsl02001.txt MARCH 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): March 25, 2004 BEAR STEARNS ALT-A TRUST Mortgage Pass-Through Certificates, Series 2002-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-56242-10 90-0070107 Pooling and Servicing Agreement) (Commission 90-0070108 (State or other File Number) IRS EIN jurisdiction of Incorporation) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) ITEM 5. Other Events On March 25, 2004 a distribution was made to holders of BEAR STEARNS ALT-A TRUST, Mortgage Pass-Through Certificates, Series 2002-1 Trust. ITEM 7. Financial Statements and Exhibits (c) Exhibits furnished in accordance with Item 601(a) of Regulation S-K Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2002-1 Trust, relating to the March 25, 2004 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BEAR STEARNS ALT-A TRUST Mortgage Pass-Through Certificates, Series 2002-1 Trust By: Wells Fargo Bank, N.A. as Securities Administrator By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 3/31/2004 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2002-1 Trust, relating to the March 25, 2004 distribution. EX-99.1

Bear Stearns ALT-A Trust Mortgage Pass-Through Certificates Record Date: 112/3029/032004 Distribution Date: 123/2625/032004 BSL Series: 2002-1 Contact: Customer Service - ~~SecuritiesLink~~CTSLink Wells Fargo Bank ~~Minnesota~~, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone: (301) ~~846~~815-~~8130~~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-A-1 07386HAA9 SEQ 2.78000% 0.00 0.00 0.00 I-A-2-1 07386HAB7 SEQ 3.53000% 0.00 0.00 0.00 I-A-2-2 07386HAC5 SEQ 3.90000% 0.00 0.00 0.00 I-A-3 07386HAD3 SEQ 5.70000% 0.00 0.00 0.00 I-A-4 07386HAE1 SEQ 5.59500% 4736,~~560~~534,~~192~~000.46 ~~221~~167,~~749~~874.4083 43,~~673~~935,~~958~~280.7528 II-A 07386HAG6 SEQ 6.~~45055~~47761% 75,~~239~~396,~~025~~939.5093 3828,~~913~~711.0816 ~~291~~1,~~994~~508,648.9131 R-I 07386HAN1 RES 6.~~35890~~36005% 0.00 0.00 0.00 R-II 07386HAP6 RES 6.~~35890~~36005% 0.00 0.00 0.00 I-X 07386HAF8 IO 0.~~80914~~80867% 0.00 3224,~~069~~263.1581 0.00 B-1 07386HAH4 SUB 6.~~41187~~41591% 3,~~583~~182,~~946~~844.5382 1916,~~149~~771.8313 ~~145~~192,~~515~~979.4988 B-2 07386HAJ0 SUB 6.~~41187~~41591% 2,~~457~~182,~~563~~522.3417 1311,~~131~~500.3120 99132,~~782~~329.0506 B-3 07386HAK7 SUB 6.~~41187~~41591% 2,~~252~~000,~~766~~645.3932 1210,~~037~~541.0385 91121,~~466~~301.8864 B-4 07386HAQ4 SUB 6.~~41187~~41591% 1,~~843~~636,~~172~~891.5062 98,~~848~~625.4815 7499,~~836~~246.5480 B-5 07386HAR2 SUB 6.~~41187~~41591% ~~819~~727,~~187~~507.7839 43,~~377~~833.1040 3344,~~260~~109.6869 B-6 07386HAS0 SUB 6.~~41187~~41591% ~~819~~727,~~216~~533.7008 43,~~377~~833.2654 3344,~~261~~111.8625 Totals 6652,~~575~~388,~~071~~884.2079 ~~355~~275,~~652~~955.6407 56,~~444~~078,~~077~~006.1691

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A-1 0.00 0.00 0.00 0.00 I-A-2-1 0.00 0.00 0.00 0.00 I-A-2-2 0.00 0.00 0.00 0.00 I-A-3 0.00 0.00 0.00 0.00 I-A-4 0.00 4232,~~886~~598,~~233~~720.7118 4,~~895~~103,~~708~~155.1511 0.00 II-A 0.00 63,~~947~~888,~~030~~291.5962 ~~330~~1,~~907~~537,359.9947 0.00 R-I 0.00 0.00 0.00 0.00 R-II 0.00 0.00 0.00 0.00 I-X 0.00 0.00 3224,~~069~~263.1581 0.00 B-1 0.00 32,~~438~~989,~~431~~864.0494 ~~164~~209,~~665~~751.3201 0.00 B-2 0.00 2,~~357~~050,~~781~~193.2810 ~~112~~143,~~913~~829.3626 0.00 B-3 0.00 21,~~161~~879,~~299~~343.5168 ~~103~~131,~~503~~843.9149 0.00 B-4 0.00 1,~~768~~537,~~335~~644.9683 84107,~~685~~871.0295 0.00 B-5 0.00 ~~785~~683,~~927~~397.0970 3747,~~637~~943.7809 0.00 B-6 0.00 ~~785~~683,~~954~~421.8583 3747,~~639~~944.1279 0.00 Totals 0.00 6146,~~130~~310,~~994~~877.0388 56,~~799~~353,~~729~~961.8098 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.

Principal Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) I-A-1 40,000,000.00 0.00 0.00 0.00 0.00 0.00 I-A-2-1 50,000,000.00 0.00 0.00 0.00 0.00 0.00 I-A-2-2 12,000,000.00 0.00 0.00 0.00 0.00 0.00 I-A-3 88,000,000.00 0.00 0.00 0.00 0.00 0.00 I-A-4 54,244,000.00 4736,~~560~~534,~~192~~000.46 4435,~~719~~644.6671 43,~~629~~899,~~239~~635.0957 0.00 0.00 II-A 50,568,500.00 75,~~239~~396,~~025~~939.5093 65,~~990~~368.0502 ~~285~~1,~~004~~503,280.8630 0.00 0.00 R-I 50.00 0.00 0.00 0.00 0.00 0.00 R-II 50.00 0.00 0.00 0.00 0.00 0.00 I-X 0.00 0.00 0.00 0.00 0.00 0.00 B-1 5,474,000.00 3,~~583~~182,~~946~~844.5382 3,~~385~~115.0137 ~~142~~189,~~130~~864.4951 0.00 0.00 B-2 3,753,600.00 2,~~457~~182,~~563~~522.3417 2,~~321~~136.1526 97130,~~460~~192.9181 0.00 0.00 B-3 3,440,800.00 2,~~252~~000,~~766~~645.3932 21,~~127~~958.7223 89119,~~339~~343.1641 0.00 0.00 B-4 2,815,200.00 1,~~843~~636,~~172~~891.5062 1,~~740~~602.8619 7397,~~095~~644.6861 0.00 0.00 B-5 1,251,200.00 ~~819~~727,~~187~~507.7839 ~~773~~712.7209 3243,~~486~~397.9760 0.00 0.00 B-6 1,251,244.31 ~~819~~727,~~216~~533.7008 ~~773~~712.7411 3243,~~488~~399.1213 0.00 0.00 Totals 312,798,644.31 6652,~~575~~388,~~071~~884.2079 6251,~~831~~248.9198 56,~~381~~026,~~245~~757.2894 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Principal Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution I-A-1 0.00 0.00 0.00000000 0.00 I-A-2-1 0.00 0.00 0.00000000 0.00 I-A-2-2 0.00 0.00 0.00000000 0.00 I-A-3 0.00 0.00 0.00000000 0.00 I-A-4 43,~~673~~935,~~958~~280.7528 4232,~~886~~598,~~233~~720.7118 0.~~79061710~~60096453 43,~~673~~935,~~958~~280.7528 II-A ~~291~~1,~~994~~508,648.9131 63,~~947~~888,~~030~~291.5962 0.~~13737862~~07689158 ~~291~~1,~~994~~508,648.9131 R-I 0.00 0.00 0.00000000 0.00 R-II 0.00 0.00 0.00000000 0.00 I-X 0.00 0.00 0.00000000 0.00 B-1 ~~145~~192,~~515~~979.4988 32,~~438~~989,~~431~~864.0494 0.~~62813866~~54619381 ~~145~~192,~~515~~979.4988 B-2 99132,~~782~~329.0506 2,~~357~~050,~~781~~193.2810 0.~~62813866~~54619381 99132,~~782~~329.0506 B-3 91121,~~466~~301.8864 21,~~161~~879,~~299~~343.5168 0.~~62813866~~54619382 91121,~~466~~301.8864 B-4 7499,~~836~~246.5480 1,~~768~~537,~~335~~644.9683 0.~~62813866~~54619382 7499,~~836~~246.5480 B-5 3344,~~260~~109.6869 ~~785~~683,~~927~~397.0970 0.~~62813866~~54619381 3344,~~260~~109.6869 B-6 3344,~~261~~111.8625 ~~785~~683,~~954~~421.8583 0.~~62813860~~54619376 3344,~~261~~111.8625 Totals 56,~~444~~078,~~077~~006.1691 6146,~~130~~310,~~994~~877.0388 0.~~19543241~~14805332 56,~~444~~078,~~077~~006.1691

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A-1 40,000,000.00 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-1 50,000,000.00 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-2 12,000,000.00 0.00000000 0.00000000 0.00000000 0.00000000 I-A-3 88,000,000.00 0.00000000 0.00000000 0.00000000 0.00000000 I-A-4 54,244,000.00 ~~876~~673.~~78254664~~51228634 0.~~82441671~~65711802 8571.~~34103477~~89063436 0.00000000 II-A 50,568,500.00 ~~143~~106.~~15286196~~72533158 0.~~13822933~~10615344 529.~~63601570~~72760315 0.00000000 R-I 50.00 0.00000000 0.00000000 0.00000000 0.00000000 R-II 50.00 0.00000000 0.00000000 0.00000000 0.00000000 I-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 5,474,000.00 ~~654~~581.~~72168981~~44772013 0.~~61837961~~56912130 2534.~~96464925~~68478444 0.00000000 B-2 3,753,600.00 ~~654~~581.~~72169118~~44772219 0.~~61837969~~56912298 2534.~~96464994~~68478527 0.00000000 B-3 3,440,800.00 ~~654~~581.~~72168972~~44772146 0.~~61837945~~56912055 2534.~~96464776~~68478551 0.00000000 B-4 2,815,200.00 ~~654~~581.~~72168940~~44771952 0.~~61837880~~56912120 2534.~~96464905~~68478616 0.00000000 B-5 1,251,200.00 ~~654~~581.~~72169118~~44772219 0.~~61838235~~56912564 2534.~~96464994~~68478261 0.00000000 B-6 1,251,244.31 ~~654~~581.~~72161867~~44766309 0.~~61837644~~56912147 2534.~~96464954~~68477711 0.00000000 2) All Senior Certificates are per $1,000 denomination, all Subordinate Classes are $25,000 denomination.

Principal Distribution Factors Statement (continued) Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss (3) Reduction Balance Percentage Distribution I-A-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-4 0.00000000 8672.~~16545148~~54775238 ~~790~~600.~~61709516~~96453396 0.~~79061710~~60096453 8672.~~16545148~~54775238 II-A 0.00000000 529.~~77424503~~83375639 ~~137~~76.~~37861693~~89157519 0.~~13737862~~07689158 529.~~77424503~~83375639 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-II 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 2635.~~58302704~~25390574 ~~628~~546.~~13866277~~19381440 0.~~62813866~~54619381 2635.~~58302704~~25390574 B-2 0.00000000 2635.~~58302696~~25390558 ~~628~~546.~~13866155~~19381394 0.~~62813866~~54619381 2635.~~58302696~~25390558 B-3 0.00000000 2635.~~58302720~~25390607 ~~628~~546.~~13866252~~19381539 0.~~62813866~~54619382 2635.~~58302720~~25390607 B-4 0.00000000 2635.~~58302785~~25390736 ~~628~~546.~~13866155~~19381571 0.~~62813866~~54619382 2635.~~58302785~~25390736 B-5 0.00000000 2635.~~58302430~~25390825 ~~628~~546.~~13865889~~19381394 0.~~62813866~~54619381 2635.~~58302430~~25390825 B-6 0.00000000 2635.~~58302598~~25390657 ~~628~~546.~~13860069~~19375652 0.~~62813860~~54619376 2635.~~58302598~~25390657 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall I-A-1 40,000,000.00 2.78000% 0.00 0.00 0.00 0.00 I-A-2-1 50,000,000.00 3.53000% 0.00 0.00 0.00 0.00 I-A-2-2 12,000,000.00 3.90000% 0.00 0.00 0.00 0.00 I-A-3 88,000,000.00 5.70000% 0.00 0.00 0.00 0.00 I-A-4 54,244,000.00 5.59500% 4736,~~560~~534,~~192~~000.46 ~~221~~170,~~749~~339.4078 0.00 0.00 II-A 50,568,500.00 6.~~45055~~47761% 75,~~239~~396,~~025~~939.5093 3829,~~913~~132.0873 0.00 0.00 R-I 50.00 6.~~35890~~36005% 0.00 0.00 0.00 0.00 R-II 50.00 6.~~35890~~36005% 0.00 0.00 0.00 0.00 I-X 0.00 0.~~80914~~80867% 4736,~~560~~534,~~192~~000.46 3224,~~069~~620.1508 0.00 0.00 B-1 5,474,000.00 6.~~41187~~41591% 3,~~583~~182,~~946~~844.5382 1917,~~149~~017.8338 0.00 0.00 B-2 3,753,600.00 6.~~41187~~41591% 2,~~457~~182,~~563~~522.3417 1311,~~131~~669.3106 0.00 0.00 B-3 3,440,800.00 6.~~41187~~41591% 2,~~252~~000,~~766~~645.3932 1210,~~037~~696.0364 0.00 0.00 B-4 2,815,200.00 6.~~41187~~41591% 1,~~843~~636,~~172~~891.5062 98,~~848~~751.4880 0.00 0.00 B-5 1,251,200.00 6.~~41187~~41591% ~~819~~727,~~187~~507.7839 43,~~377~~889.1069 0.00 0.00 B-6 1,251,244.31 6.~~41187~~41591% ~~819~~727,~~216~~533.7008 43,~~377~~889.2682 0.00 0.00 Totals 312,798,644.31 ~~355~~280,~~652~~006.6498 0.00 0.00

Interest Distribution Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance I-A-1 0.00 0.00 0.00 0.00 0.00 I-A-2-1 0.00 0.00 0.00 0.00 0.00 I-A-2-2 0.00 0.00 0.00 0.00 0.00 I-A-3 0.00 0.00 0.00 0.00 0.00 I-A-4 02,464.0095 0.00 ~~221~~167,~~749~~874.4083 0.00 4232,~~886~~598,~~233~~720.7118 II-A 0421.0057 0.00 3828,~~913~~711.0816 0.00 63,~~947~~888,~~030~~291.5962 R-I 0.00 0.00 0.00 0.00 0.00 R-II 0.00 0.00 0.00 0.00 0.00 I-X 0356.0027 0.00 3224,~~069~~263.1581 0.00 4232,~~886~~598,~~233~~720.7118 B-1 0246.0025 0.00 1916,~~149~~771.8313 0.00 32,~~438~~989,~~431~~864.0494 B-2 0168.0086 0.00 1311,~~131~~500.3120 0.00 2,~~357~~050,~~781~~193.2810 B-3 0154.0079 0.00 1210,~~037~~541.0385 0.00 21,~~161~~879,~~299~~343.5168 B-4 0126.0065 0.00 98,~~848~~625.4815 0.00 1,~~768~~537,~~335~~644.9683 B-5 056.0029 0.00 43,~~377~~833.1040 0.00 ~~785~~683,~~927~~397.0970 B-6 056.0029 0.00 43,~~377~~833.2654 0.00 ~~785~~683,~~954~~421.8583 Totals 04,051.0092 0.00 ~~355~~275,~~652~~955.6407 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

Interest Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall I-A-1 40,000,000.00 2.78000% 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-1 50,000,000.00 3.53000% 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-2 12,000,000.00 3.90000% 0.00000000 0.00000000 0.00000000 0.00000000 I-A-3 88,000,000.00 5.70000% 0.00000000 0.00000000 0.00000000 0.00000000 I-A-4 54,244,000.00 5.59500% ~~876~~673.~~78254664~~51228634 43.~~08799867~~14025109 0.00000000 0.00000000 II-A 50,568,500.00 6.~~45055~~47761% ~~143~~106.~~15286196~~72533158 0.~~76951225~~57610429 0.00000000 0.00000000 R-I 50.00 6.~~35890~~36005% 0.00000000 0.00000000 0.00000000 0.00000000 R-II 50.00 6.~~35890~~36005% 0.00000000 0.00000000 0.00000000 0.00000000 I-X 0.00 0.~~80914~~80867% ~~194~~149.~~72409746~~57993015 0.~~13129964~~10080117 0.00000000 0.00000000 B-1 5,474,000.00 6.~~41187~~41591% ~~654~~581.~~72168981~~44772013 3.~~49832481~~10876507 0.00000000 0.00000000 B-2 3,753,600.00 6.~~41187~~41591% ~~654~~581.~~72169118~~44772219 3.~~49832428~~10876492 0.00000000 0.00000000 B-3 3,440,800.00 6.~~41187~~41591% ~~654~~581.~~72168972~~44772146 3.~~49832306~~10876540 0.00000000 0.00000000 B-4 2,815,200.00 6.~~41187~~41591% ~~654~~581.~~72168940~~44771952 3.~~49832339~~10876670 0.00000000 0.00000000 B-5 1,251,200.00 6.~~41187~~41591% ~~654~~581.~~72169118~~44772219 3.~~49832161~~10876758 0.00000000 0.00000000 B-6 1,251,244.31 6.~~41187~~41591% ~~654~~581.~~72161867~~44766309 3.~~49832560~~10876139 0.00000000 0.00000000 5) All Senior Certificates are per $1,000 denomination, all Subordinate Classes are $25,000 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-A-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-2-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-3 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-A-4 0.~~00000000~~04544189 0.00000000 43.~~08799867~~09480920 0.00000000 ~~790~~600.~~61709516~~96453396 II-A 0.~~00000000~~00833661 0.00000000 0.~~76951225~~56776768 0.00000000 ~~137~~76.~~37861693~~89157519 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-II 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 I-X 0.~~00000000~~00145866 0.00000000 0.~~13129964~~09934250 0.00000000 ~~175~~133.~~58766524~~46784437 B-1 0.~~00000000~~04498539 0.00000000 3.~~49832481~~06377969 0.00000000 ~~628~~546.~~13866277~~19381440 B-2 0.~~00000000~~04498615 0.00000000 3.~~49832428~~06377877 0.00000000 ~~628~~546.~~13866155~~19381394 B-3 0.~~00000000~~04498663 0.00000000 3.~~49832306~~06377877 0.00000000 ~~628~~546.~~13866252~~19381539 B-4 0.~~00000000~~04498792 0.00000000 3.~~49832339~~06377877 0.00000000 ~~628~~546.~~13866155~~19381571 B-5 0.~~00000000~~04498881 0.00000000 3.~~49832161~~06377877 0.00000000 ~~628~~546.~~13865889~~19381394 B-6 0.~~00000000~~04498722 0.00000000 3.~~49832560~~06378216 0.00000000 ~~628~~546.~~13860069~~19375652 (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 56,~~822~~367,~~749~~993.7754 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 1517,~~764~~734.6185 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 56,~~838~~385,~~514~~728.3839 Withdrawals Reimbursement for Servicer Advances 1714,~~425~~958.0631 Payment of Service Fee 2116,~~359~~808.5010 Payment of Interest and Principal 56,~~799~~353,~~729~~961.8298 Total Withdrawals (Pool Distribution Amount) 56,~~838~~385,~~514~~728.3839 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 04,051.0092

SERVICING FEES Gross Servicing Fee 2016,~~804~~371.7152 Master Servicing Fee ~~554~~436.7958 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 2116,~~359~~808.5010

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 10 0 0 10 ~~184,477~~0.6800 0.00 0.00 ~~184,477~~0.6800 30 Days 04 0 0 0 04 01,255,939.0003 0.00 0.00 0.00 01,255,939.0003 60 Days 21 0 0 0 21 ~~728~~338,~~888~~151.4163 0.00 0.00 0.00 ~~728~~338,~~888~~151.4163 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 1 1 2 3 0.00 0.00 594,032.50 1659,~~213,418~~266.5991 1,~~807~~253,~~451~~299.0941 Totals 25 0 1 1 27 ~~6 728~~1,~~888~~594,090.4166 ~~184,477~~0.6800 594,032.50 1659,~~213,418~~266.5991 2,~~720~~847,~~817~~390.1807 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.~~518135~~000000% 0.000000% 0.000000% 0.~~518135~~000000% 0.~~301415~~000000% 0.000000% 0.000000% 0.~~301415~~000000% 30 Days 02.~~000000~~649007% 0.000000% 0.000000% 0.000000% 02.~~000000~~649007% 02.~~000000~~708228% 0.000000% 0.000000% 0.000000% 02.~~000000~~708228% 60 Days 10.~~036269~~662252% 0.000000% 0.000000% 0.000000% 10.~~036269~~662252% 10.~~190919~~729169% 0.000000% 0.000000% 0.000000% 10.~~190919~~729169% 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.~~518135~~662252% 10.~~036269~~662252% 1.~~554404~~324503% 0.000000% 0.000000% 01.~~970580~~280934% 1.~~982585~~421602% 2.~~953165~~702536% Totals 13.~~036269~~311258% 0.~~518135~~000000% 0.~~518135~~662252% 10.~~036269~~662252% 34.~~108808~~635762% 13.~~190919~~437397% 0.~~301415~~000000% 01.~~970580~~280934% 1.~~982585~~421602% 46.~~445500~~139933%

Delinquency Status By Groups

DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 1 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 10 0 0 10 ~~184,477~~0.6800 0.00 0.00 ~~184,477~~0.6800 30 Days 04 0 0 0 04 01,255,939.0003 0.00 0.00 0.00 01,255,939.0003 60 Days 10 0 0 0 10 ~~490,767~~0.4700 0.00 0.00 0.00 ~~490,767~~0.4700 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 1 1 2 0.00 0.00 594,032.50 659,266.91 1,253,299.41 Totals 14 10 1 1 46 ~~490~~1,~~767~~255,939.4703 ~~184,477~~0.6800 594,032.50 659,266.91 12,~~928~~509,~~544~~238.5644 0-29 Days 0.~~613497~~000000% 0.000000% 0.000000% 0.~~613497~~000000% 0.~~352601~~000000% 0.000000% 0.000000% 0.~~352601~~000000% 30 Days 03.~~000000~~053435% 0.000000% 0.000000% 0.000000% 03.~~000000~~053435% 03.~~000000~~066340% 0.000000% 0.000000% 0.000000% 03.~~000000~~066340% 60 Days 0.~~613497~~000000% 0.000000% 0.000000% 0.000000% 0.~~613497~~000000% 0.~~938026~~000000% 0.000000% 0.000000% 0.000000% 0.~~938026~~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.~~613497~~763359% 0.~~613497~~763359% 1.~~226994~~526718% 0.000000% 0.000000% 1.~~135401~~450314% 1.~~260087~~609582% 23.~~395488~~059895% Totals 03.~~613497~~053435% 0.~~613497~~000000% 0.~~613497~~763359% 0.~~613497~~763359% 24.~~453988~~580153% 03.~~938026~~066340% 0.~~352601~~000000% 1.~~135401~~450314% 1.~~260087~~609582% 36.~~686115~~126235% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 2 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 60 Days 1 0 0 0 1 ~~238~~338,~~120~~151.9463 0.00 0.00 0.00 ~~238~~338,~~120~~151.9463 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 10 10 0.00 0.00 0.00 ~~554,151~~0.6800 ~~554,151~~0.6800 Totals 1 0 0 0 1 ~~2 238~~338,~~120~~151.9463 0.00 0.00 ~~554,151~~0.6800 ~~792~~338,~~272~~151.6263 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 35.~~333333~~000000% 0.000000% 0.000000% 0.000000% 35.~~333333~~000000% 26.~~680125~~243525% 0.000000% 0.000000% 0.000000% 26.~~680125~~243525% 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% 30.~~333333~~000000% 30.~~333333~~000000% 0.000000% 0.000000% 0.000000% 60.~~237148~~000000% 60.~~237148~~000000% Totals 35.~~333333~~000000% 0.000000% 0.000000% 30.~~333333~~000000% 65.~~666667~~000000% 26.~~680125~~243525% 0.000000% 0.000000% 60.~~237148~~000000% 86.~~917273~~243525%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 1517,~~764~~734.6185

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 272,798,644.31 87.21222079% 6146,~~130~~310,~~994~~877.0388 100.00000000% 8178.~~518819~~787131% 9190.~~446199~~359559% Class IA3 122,798,644.31 39.25804876% 6146,~~130~~310,~~994~~877.0388 100.00000000% 0.000000% 0.000000% Class IA4 68,554,644.31 21.91654138% 1813,~~244~~712,~~760~~157.3270 29.~~84535195~~60893494% 70.~~154648~~391065% 3231.~~470268~~990057% Class 2A 17,986,144.31 5.75007106% 119,~~297~~823,~~729~~866.7308 1821.~~48118112~~21286948% 118.~~364171~~396065% 53.~~259775~~815692% Class R-I 17,986,094.31 5.75005507% 119,~~297~~823,~~729~~866.7308 1821.~~48118112~~21286948% 0.000000% 0.000000% Class R-II 17,986,044.31 5.75003909% 119,~~297~~823,~~729~~866.7308 1821.~~48118112~~21286948% 0.000000% 0.000000% Class X 17,986,044.31 5.75003909% 119,~~297~~823,~~729~~866.7308 1821.~~48118112~~21286948% 0.000000% 0.000000% Class B-1 12,512,044.31 4.00003150% 76,~~859~~834,~~298~~001.6914 1214.~~85648764~~75679463% 56.~~624693~~456075% 2.~~603324~~934040% Class B-2 8,758,444.31 2.80002630% 54,~~501~~783,~~517~~808.4104 810.~~99955497~~32977188% 34.~~856933~~427023% 12.~~785137~~011913% Class B-3 5,317,644.31 1.70002153% 32,~~340~~904,~~217~~464.9036 56.~~46403335~~27166768% 34.~~535522~~058104% 1.~~636375~~844254% Class B-4 2,502,444.31 0.80001763% 1,~~571~~366,~~881~~819.9453 2.~~57133385~~95140061% 23.~~892700~~320267% 1.~~338853~~508935% Class B-5 1,251,244.31 0.40001590% ~~785~~683,~~954~~421.8583 1.~~28568963~~47572635% 1.~~285644~~475674% 0.~~595046~~670638% Class B-6 0.00 0.00000000% 0.00 0.00000000% 1.~~285690~~475726% 0.~~595067~~670661% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 6.~~795555~~798734% Weighted Average Net Coupon 6.~~420555~~423734% Weighted Average Pass-Through Rate 6.~~410555~~413734% Weighted Average Maturity(Stepdown Calculation ) ~~337~~334 Beginning Scheduled Collateral Loan Count ~~209~~167 Number Of Loans Paid In Full 16 Ending Scheduled Collateral Loan Count ~~193~~151 Beginning Scheduled Collateral Balance 6652,~~575~~388,~~071~~884.2179 Ending Scheduled Collateral Balance 6146,~~130~~310,~~994~~877.0388 Ending Actual Collateral Balance at 3029-~~Nov~~Feb-~~2003~~2004 6146,~~203~~374,~~856~~937.1924 Monthly P &I Constant ~~439~~348,~~844~~064.0507 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 5,~~258~~668,~~685~~021.2918 Ending Scheduled Balance for Premium Loans 6146,~~130~~310,~~994~~877.0388 Scheduled Principal 6251,~~831~~248.9198 Unscheduled Principal 56,~~381~~026,~~245~~757.2793

Miscellaneous Reporting Senior Percentage Group 1 8280.~~892398~~719117% Senior Prepayment Percentage Group 1 9190.~~446199~~359559% Subordinate Percentage Group 1 1719.~~107602~~280883% Subordinate Prepayment Pct Group 1 89.~~553801~~640441% Average Loss Severity Group 1 0 Senior Percentage Group 2 7875.~~691457~~712194% Senior Prepayment Percentage Group 2 8987.~~345728~~856097% Subordinate Percentage Group 2 2124.~~308543~~287806% Subordinate Prepayment Pct Group 2 1012.~~654272~~143903% Average Loss Severity Group 2 0

Group Level Collateral Statement Group Group 1 Group 2 Total Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 6.~~789143~~788674 6.~~835550~~862611 6.~~795555~~798734 Weighted Average Net Rate 6.~~414143~~413674 6.~~460549~~487612 6.~~420555~~423734 Weighted Average Maturity ~~337~~334 ~~337~~334 ~~337~~334 Beginning Loan Count ~~178~~143 3124 ~~209~~167 Loans Paid In Full 1512 14 16 Ending Loan Count ~~163~~131 3020 ~~193~~151 Beginning Scheduled Balance 5745,~~375~~260,~~819~~654.1001 97,~~199~~128,~~252~~230.1178 6652,~~575~~388,~~071~~884.2179 Ending scheduled Balance 5240,~~259~~900,~~615~~808.8124 85,~~871~~410,~~378~~069.2264 6146,~~130~~310,~~994~~877.0388 Record Date 1102/3029/~~2003~~2004 1102/3029/~~2003~~2004 1102/3029/~~2003~~2004 Principal And Interest Constant ~~378~~300,~~559~~208.5781 6147,~~284~~855.4826 ~~439~~348,~~844~~064.0507 Scheduled Principal 5344,~~949~~158.0595 87,~~882~~090.8603 6251,~~831~~248.9198 Unscheduled Principal 54,~~062~~315,~~254~~686.2482 ~~318~~1,~~991~~711,071.0311 56,~~381~~026,~~245~~757.2793 Scheduled Interest ~~324~~256,~~610~~049.5286 5240,~~401~~765.6223 ~~377~~296,~~012~~815.1409 Servicing Fees 1714,~~929~~143.9495 2,~~874~~227.7757 2016,~~804~~371.7152 Master Servicing Fees ~~478~~377.1318 7659.6640 ~~554~~436.7958 Trustee Fee 0.00 0.00 0.00 FRY Amount 0.00 0.00 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 0.00 0.00 0.00 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest ~~306~~241,~~202~~528.4573 4938,~~450~~478.1926 ~~355~~280,~~652~~006.6499 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.~~404143~~403674 6.~~450550~~477611 6.~~410555~~413734

Filing Compare · BEAR STEARNS ALT A TR MORTGAGE PASS THR CERT SERIES 2002-1