8-K 1 bst03004.txt OCTOBER 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): October 27, 2003 BEAR STEARNS ARM TRUST Mortgage Pass-Through Certificates, Series 2003-4 Trust (Exact name of registrant as specified in its charter) New York (governing law of 033-44658-32 54-2120395 Pooling and Servicing Agreement) (Commission 54-2120396 (State or other File Number) 54-2120397 jurisdiction IRS EIN of Incorporation) c/o Wells Fargo Bank Minnesota, 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 October 27, 2003 a distribution was made to holders of BEAR STEARNS ARM TRUST, Mortgage Pass-Through Certificates, Series 2003-4 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 2003-4 Trust, relating to the October 27, 2003 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 ARM TRUST Mortgage Pass-Through Certificates, Series 2003-4 Trust By: Wells Fargo Bank Minnesota, N.A., as Securities Administrator By: /s/ Beth Belfield, Assistant Vice President By: Beth Belfield, Assistant Vice President Date: 10/27/03 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage Pass-Through Certificates, Series 2003-4 Trust, relating to the October 27, 2003 distribution. EX-99.1

Bear Stearns ARM Trust Mortgage Pass-Through Certificates Record Date: 89/3130/03 Distribution Date: 910/2527/03 BST Series: 2003-4 Contact: CTSLink Customer Service Wells Fargo Bank Minnesota, N.A. Corporate Trust Services 9062 Old Annapolis Road Columbia, MD 21045-1951 Telephone: (301) 815-6600 Fax: (301) 815-6600 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution I-A-1 07384MVM1 SEN 4.~~35321~~31519% 4844,~~894~~575,~~488~~217.3500 ~~177~~160,~~330~~255.0885 45,~~319~~184,~~271~~022.3503 I-X-A-1 07384MVN9 SEN 0.17600% 0.00 76,~~169~~536.4422 0.00 II-A-1 07384MVP4 SEN 4.~~65602~~70254% ~~229~~216,~~052~~798,~~056~~995.5174 ~~888~~849,~~508~~396.3418 123,~~253~~142,~~060~~634.7789 II-X-A-1 07384MVQ2 SEN 0.26600% 0.00 5048,~~760~~046.8023 0.00 III-A-1 07384MVR0 SEN 4.~~96762~~99744% ~~227~~214,~~062~~627,~~304~~034.7110 ~~939~~893,~~735~~618.6154 124,~~435~~646,~~270~~611.6193 III-X-A-1 07384MVS8 SEN 0.22400% 0.00 4240,~~374~~054.6064 0.00 R-I 07384MVT6 SEN 4.~~53133~~51109% 0.00 0.00 0.00 R-II 07384MVU3 SEN 4.~~53133~~51109% 0.00 0.00 0.00 R-III 07384MVV1 SEN 4.~~53133~~51109% 0.00 0.00 0.00 B-1 07384MVW9 SUB 5.~~01074~~04195% 5,~~964~~960,~~969~~928.7655 2425,~~901~~039.3292 4,~~041~~075.2194 B-2 07384MVX7 SUB 5.~~01074~~04195% 4,~~544~~541,~~634~~555.3137 1819,~~972~~077.0060 3,~~078~~105.9441 B-3 07384MVY5 SUB 5.~~01074~~04195% 3,~~124~~122,~~598~~481.2638 13,~~043~~116.9353 2,~~116~~135.8808 B-4 07384MVZ2 SUB 5.~~01074~~04195% 1,~~420~~419,~~235~~273.6545 5,~~928~~961.91 ~~962~~970.2047 B-5 07384MWA6 SUB 5.~~01074~~04195% ~~852~~851,~~081~~504.5123 3,~~557~~576.0989 ~~577~~582.2824 B-6 07384MWB4 SUB 5.~~01074~~04195% 1,~~136~~135,~~354~~584.1832 4,~~743~~770.8222 ~~769~~776.8749 Totals ~~522~~493,~~051~~032,~~723~~574.2414 2,~~177~~069,~~025~~450.9473 2912,~~019~~984,~~149~~914.1148

Certificateholder Distribution Summary (continued) Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A-1 0.00 4439,~~575~~391,~~217~~194.0098 45,~~496~~344,~~601~~277.4388 0.00 I-X-A-1 0.00 0.00 76,~~169~~536.4422 0.00 II-A-1 0.00 ~~216~~213,~~798~~656,~~995~~360.7485 133,~~141~~992,~~569~~031.1107 0.00 II-X-A-1 0.00 0.00 5048,~~760~~046.8023 0.00 III-A-1 0.00 ~~214~~209,~~627~~980,~~034~~422.1016 135,~~375~~540,~~006~~230.2247 0.00 III-X-A-1 0.00 0.00 4240,~~374~~054.6064 0.00 R-I 0.00 0.00 0.00 0.00 R-II 0.00 0.00 0.00 0.00 R-III 0.00 0.00 0.00 0.00 B-1 0.00 5,~~960~~956,~~928~~852.5561 2829,~~942~~115.5386 0.00 B-2 0.00 4,~~541~~538,~~555~~449.3796 22,~~050~~183.9401 0.00 B-3 0.00 3,~~122~~120,~~481~~346.3830 15,~~160~~251.8161 0.00 B-4 0.00 1,~~419~~418,~~273~~302.4599 6,~~891~~932.1138 0.00 B-5 0.00 ~~851~~850,~~504~~921.2399 4,~~134~~159.3713 0.00 B-6 0.00 1,~~135~~134,~~584~~807.3283 5,~~513~~546.6971 0.00 Totals 0.00 ~~493~~480,~~032~~047,~~574~~659.1467 3115,~~196~~054,~~175~~365.0521 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 50,011,600.00 4844,~~894~~575,~~488~~217.3500 5652,~~458~~179.0452 45,~~262~~131,~~813~~842.3151 0.00 0.00 I-X-A-1 0.00 0.00 0.00 0.00 0.00 0.00 II-A-1 247,776,800.00 ~~229~~216,~~052~~798,~~056~~995.5174 ~~163~~155,~~829~~891.6442 122,~~089~~986,~~231~~743.1347 0.00 0.00 II-X-A-1 0.00 0.00 0.00 0.00 0.00 0.00 III-A-1 254,370,500.00 ~~227~~214,~~062~~627,~~304~~034.7110 ~~124~~118,~~218~~891.9965 124,~~311~~527,~~051~~720.6228 0.00 0.00 III-X-A-1 0.00 0.00 0.00 0.00 0.00 0.00 R-I 100.00 0.00 0.00 0.00 0.00 0.00 R-II 50.00 0.00 0.00 0.00 0.00 0.00 R-III 50.00 0.00 0.00 0.00 0.00 0.00 B-1 5,977,000.00 5,~~964~~960,~~969~~928.7655 4,~~041~~075.2194 0.00 0.00 0.00 B-2 4,553,800.00 4,~~544~~541,~~634~~555.3137 3,~~078~~105.9441 0.00 0.00 0.00 B-3 3,130,900.00 3,~~124~~122,~~598~~481.2638 2,~~116~~135.8808 0.00 0.00 0.00 B-4 1,423,100.00 1,~~420~~419,~~235~~273.6545 ~~962~~970.2047 0.00 0.00 0.00 B-5 853,800.00 ~~852~~851,~~081~~504.5123 ~~577~~582.2824 0.00 0.00 0.00 B-6 1,138,646.00 1,~~136~~135,~~354~~584.1832 ~~769~~776.8749 0.00 0.00 0.00 Totals 569,236,346.00 ~~522~~493,~~051~~032,~~723~~574.2414 ~~356~~338,~~053~~608.0522 2812,~~663~~646,~~096~~306.0626 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 45,~~319~~184,~~271~~022.3503 4439,~~575~~391,~~217~~194.0098 0.~~89129756~~78764117 45,~~319~~184,~~271~~022.3503 I-X-A-1 0.00 0.00 0.00000000 0.00 II-A-1 123,~~253~~142,~~060~~634.7789 ~~216~~213,~~798~~656,~~995~~360.7485 0.~~87497698~~86229365 123,~~253~~142,~~060~~634.7789 II-X-A-1 0.00 0.00 0.00000000 0.00 III-A-1 124,~~435~~646,~~270~~611.6193 ~~214~~209,~~627~~980,~~034~~422.1016 0.~~84375757~~82549046 124,~~435~~646,~~270~~611.6193 III-X-A-1 0.00 0.00 0.00000000 0.00 R-I 0.00 0.00 0.00000000 0.00 R-II 0.00 0.00 0.00000000 0.00 R-III 0.00 0.00 0.00000000 0.00 B-1 4,~~041~~075.2194 5,~~960~~956,~~928~~852.5561 0.~~99731112~~99662918 4,~~041~~075.2194 B-2 3,~~078~~105.9441 4,~~541~~538,~~555~~449.3796 0.~~99731112~~99662918 3,~~078~~105.9441 B-3 2,~~116~~135.8808 3,~~122~~120,~~481~~346.3830 0.~~99731112~~99662918 2,~~116~~135.8808 B-4 ~~962~~970.2047 1,~~419~~418,~~273~~302.4599 0.~~99731112~~99662918 ~~962~~970.2047 B-5 ~~577~~582.2824 ~~851~~850,~~504~~921.2399 0.~~99731112~~99662918 ~~577~~582.2824 B-6 ~~769~~776.8749 1,~~135~~134,~~584~~807.3283 0.~~99731112~~99662918 ~~769~~776.8749 Totals 2912,~~019~~984,~~149~~914.1148 ~~493~~480,~~032~~047,~~574~~659.1467 0.~~86612982~~84331871 2912,~~019~~984,~~149~~914.1148

Principal Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A-1 50,011,600.00 ~~977~~891.~~66294920~~29755897 1.~~12889890~~04334834 85102.~~23649133~~61304397 0.00000000 I-X-A-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 247,776,800.00 ~~924~~874.~~42898815~~97697823 0.~~66119847~~62916068 4812.~~79081145~~05416920 0.00000000 II-X-A-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 III-A-1 254,370,500.00 ~~892~~843.~~64401615~~75756662 0.~~48833882~~46739559 4817.~~39811071~~79970665 0.00000000 III-X-A-1 0.00 0.00000000 0.00000000 0.00000000 0.00000000 R-I 100.00 0.00000000 0.00000000 0.00000000 0.00000000 R-II 50.00 0.00000000 0.00000000 0.00000000 0.00000000 R-III 50.00 0.00000000 0.00000000 0.00000000 0.00000000 B-1 5,977,000.00 997.~~98724444~~31111762 0.~~67612682~~68193743 0.00000000 0.00000000 B-2 4,553,800.00 997.~~98724362~~31111819 0.~~67612543~~68193816 0.00000000 0.00000000 B-3 3,130,900.00 997.~~98724328~~31111821 0.~~67612508~~68193810 0.00000000 0.00000000 B-4 1,423,100.00 997.~~98724615~~31111658 0.~~67612958~~68194083 0.00000000 0.00000000 B-5 853,800.00 997.~~98724526~~31111502 0.~~67613024~~68193956 0.00000000 0.00000000 B-6 1,138,646.00 997.~~98724099~~31112216 0.~~67612761~~68194153 0.00000000 0.00000000

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 86103.~~36539023~~65639232 ~~891~~787.~~29755897~~64116685 0.~~89129756~~78764117 86103.~~36539023~~65639232 I-X-A-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A-1 0.00000000 4912.~~45200991~~68332988 ~~874~~862.~~97697823~~29364836 0.~~87497698~~86229365 4912.~~45200991~~68332988 II-X-A-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 III-A-1 0.00000000 4818.~~88644953~~26710224 ~~843~~825.~~75756662~~49046434 0.~~84375757~~82549046 4818.~~88644953~~26710224 III-X-A-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-II 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-III 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.00000000 0.~~67612682~~68193743 ~~997~~996.~~31111762~~62918019 0.~~99731112~~99662918 0.~~67612682~~68193743 B-2 0.00000000 0.~~67612543~~68193816 ~~997~~996.~~31111819~~62918003 0.~~99731112~~99662918 0.~~67612543~~68193816 B-3 0.00000000 0.~~67612508~~68193810 ~~997~~996.~~31111821~~62918011 0.~~99731112~~99662918 0.~~67612508~~68193810 B-4 0.00000000 0.~~67612958~~68194083 ~~997~~996.~~31111658~~62918277 0.~~99731112~~99662918 0.~~67612958~~68194083 B-5 0.00000000 0.~~67613024~~68193956 ~~997~~996.~~31111502~~62917545 0.~~99731112~~99662918 0.~~67613024~~68193956 B-6 0.00000000 0.~~67612761~~68194153 ~~997~~996.~~31112216~~62918062 0.~~99731112~~99662918 0.~~67612761~~68194153 (3) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~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 50,011,600.00 4.~~35321~~31519% 4844,~~894~~575,~~488~~217.3500 ~~177~~160,~~373~~292.4313 0.00 0.00 I-X-A-1 0.00 0.17600% 4844,~~894~~575,~~488~~217.3500 76,~~171~~537.1970 0.00 0.00 II-A-1 247,776,800.00 4.~~65602~~70254% ~~229~~216,~~052~~798,~~056~~995.5174 ~~888~~849,~~725~~588.5647 0.00 0.00 II-X-A-1 0.00 0.26600% ~~229~~216,~~052~~798,~~056~~995.5174 5048,~~773~~057.2111 0.00 0.00 III-A-1 254,370,500.00 4.~~96762~~99744% ~~227~~214,~~062~~627,~~304~~034.7110 ~~939~~893,~~965~~820.3485 0.00 0.00 III-X-A-1 0.00 0.22400% ~~227~~214,~~062~~627,~~304~~034.7110 4240,~~384~~063.9671 0.00 0.00 R-I 100.00 4.~~53133~~51109% 0.00 0.00 0.00 0.00 R-II 50.00 4.~~53133~~51109% 0.00 0.00 0.00 0.00 R-III 50.00 4.~~53133~~51109% 0.00 0.00 0.00 0.00 B-1 5,977,000.00 5.~~01074~~04195% 5,~~964~~960,~~969~~928.7655 2425,~~907~~045.4159 0.00 0.00 B-2 4,553,800.00 5.~~01074~~04195% 4,~~544~~541,~~634~~555.3137 1819,~~976~~081.6492 0.00 0.00 B-3 3,130,900.00 5.~~01074~~04195% 3,~~124~~122,~~598~~481.2638 13,~~047~~119.1250 0.00 0.00 B-4 1,423,100.00 5.~~01074~~04195% 1,~~420~~419,~~235~~273.6545 5,~~930~~963.3626 0.00 0.00 B-5 853,800.00 5.~~01074~~04195% ~~852~~851,~~081~~504.5123 3,~~557~~577.9670 0.00 0.00 B-6 1,138,646.00 5.~~01074~~04195% 1,~~136~~135,~~354~~584.1832 4,~~744~~771.9830 0.00 0.00 Totals 569,236,346.00 2,~~177~~069,~~558~~919.1624 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 4336.3528 0.00 ~~177~~160,~~330~~255.0885 0.00 4439,~~575~~391,~~217~~194.0098 I-X-A-1 1.7548 0.00 76,~~169~~536.4422 0.00 4439,~~575~~391,~~217~~194.0098 II-A-1 ~~217~~192.2130 0.00 ~~888~~849,~~508~~396.3418 0.00 ~~216~~213,~~798~~656,~~995~~360.7485 II-X-A-1 1210.4188 0.00 5048,~~760~~046.8023 0.00 ~~216~~213,~~798~~656,~~995~~360.7485 III-A-1 ~~229~~202.7431 0.00 ~~939~~893,~~735~~618.6154 0.00 ~~214~~209,~~627~~980,~~034~~422.1016 III-X-A-1 109.3607 0.00 4240,~~374~~054.6064 0.00 ~~214~~209,~~627~~980,~~034~~422.1016 R-I 0.00 0.00 0.00 0.00 0.00 R-II 0.00 0.00 0.00 0.00 0.00 R-III 0.00 0.00 0.00 0.00 0.00 B-1 65.0967 0.00 2425,~~901~~039.3292 0.00 5,~~960~~956,~~928~~852.5561 B-2 4.6432 0.00 1819,~~972~~077.0060 0.00 4,~~541~~538,~~555~~449.3796 B-3 32.1997 0.00 13,~~043~~116.9353 0.00 3,~~122~~120,~~481~~346.3830 B-4 1.4535 0.00 5,~~928~~961.91 0.00 1,~~419~~418,~~273~~302.4599 B-5 0.8781 0.00 3,~~557~~576.0989 0.00 ~~851~~850,~~504~~921.2399 B-6 1.1608 0.00 4,~~743~~770.8222 0.00 1,~~135~~134,~~584~~807.3283 Totals ~~532~~468.2252 0.00 2,~~177~~069,~~025~~450.9473 0.00 (4) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~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 50,011,600.00 4.~~35321~~31519% ~~977~~891.~~66294920~~29755897 3.~~54664578~~20509902 0.00000000 0.00000000 I-X-A-1 0.00 0.17600% ~~977~~891.~~66294920~~29755897 0.~~14339053~~13072367 0.00000000 0.00000000 II-A-1 247,776,800.00 4.~~65602~~70254% ~~924~~874.~~42898815~~97697823 3.~~58679893~~42884592 0.00000000 0.00000000 II-X-A-1 0.00 0.26600% ~~924~~874.~~42898815~~97697823 0.~~20491511~~19395323 0.00000000 0.00000000 III-A-1 254,370,500.00 4.~~96762~~99744% ~~892~~843.~~64401615~~75756662 3.~~69526081~~51385420 0.00000000 0.00000000 III-X-A-1 0.00 0.22400% ~~892~~843.~~64401615~~75756662 0.~~16662687~~15750140 0.00000000 0.00000000 R-I 100.00 4.~~53133~~51109% 0.00000000 0.00000000 0.00000000 0.00000000 R-II 50.00 4.~~53133~~51109% 0.00000000 0.00000000 0.00000000 0.00000000 R-III 50.00 4.~~53133~~51109% 0.00000000 0.00000000 0.00000000 0.00000000 B-1 5,977,000.00 5.~~01074~~04195% 997.~~98724444~~31111762 4.~~16720930~~19032792 0.00000000 0.00000000 B-2 4,553,800.00 5.~~01074~~04195% 997.~~98724362~~31111819 4.~~16720980~~19032896 0.00000000 0.00000000 B-3 3,130,900.00 5.~~01074~~04195% 997.~~98724328~~31111821 4.~~16721071~~19032866 0.00000000 0.00000000 B-4 1,423,100.00 5.~~01074~~04195% 997.~~98724615~~31111658 4.~~16721242~~19033097 0.00000000 0.00000000 B-5 853,800.00 5.~~01074~~04195% 997.~~98724526~~31111502 4.~~16720543~~19032560 0.00000000 0.00000000 B-6 1,138,646.00 5.~~01074~~04195% 997.~~98724099~~31112216 4.~~16721264~~19032781 0.00000000 0.00000000 (5) Per $1 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.~~00086680~~00072543 0.00000000 3.~~54577898~~20437359 0.00000000 ~~891~~787.~~29755897~~64116685 I-X-A-1 0.~~00003499~~00002959 0.00000000 0.~~14335554~~13069408 0.00000000 ~~891~~787.~~29755897~~64116685 II-A-1 0.~~00087664~~00077610 0.00000000 3.~~58592225~~42806986 0.00000000 ~~874~~862.~~97697823~~29364836 II-X-A-1 0.~~00005009~~00004391 0.00000000 0.~~20486502~~19390932 0.00000000 ~~874~~862.~~97697823~~29364836 III-A-1 0.~~00090317~~00079534 0.00000000 3.~~69435768~~51305886 0.00000000 ~~843~~825.~~75756662~~49046434 III-X-A-1 0.~~00004073~~00003566 0.00000000 0.~~16658614~~15746574 0.00000000 ~~843~~825.~~75756662~~49046434 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-II 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-III 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 B-1 0.~~00101891~~00094864 0.00000000 4.~~16619040~~18937929 0.00000000 ~~997~~996.~~31111762~~62918019 B-2 0.~~00101893~~00094866 0.00000000 4.~~16619087~~18938030 0.00000000 ~~997~~996.~~31111819~~62918003 B-3 0.~~00101888~~00094861 0.00000000 4.~~16619183~~18938005 0.00000000 ~~997~~996.~~31111821~~62918011 B-4 0.~~00101890~~00094863 0.00000000 4.~~16619352~~18938233 0.00000000 ~~997~~996.~~31111658~~62918277 B-5 0.~~00101897~~00094870 0.00000000 4.~~16618646~~18937690 0.00000000 ~~997~~996.~~31111502~~62917545 B-6 0.~~00101875~~00094849 0.00000000 4.~~16619388~~18937932 0.00000000 ~~997~~996.~~31112216~~62918062 (6) Amount Does Not Include Excess Special Hazard, ~~Bankrupcy~~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 3115,~~305~~173,~~624~~397.3051 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 2219,~~118~~336.9164 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 3115,~~327~~192,~~743~~734.2115 Withdrawals Reimbursement for Servicer Advances 822,~~551~~118.8991 Payment of Service Fee ~~123~~116,~~016~~250.2804 Payment of Interest and Principal 3115,~~196~~054,~~175~~365.0420 Total Withdrawals (Pool Distribution Amount) 3115,~~327~~192,~~743~~734.2115 Ending Balance 0.00

PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall ~~532~~0.2100 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall ~~532~~468.2252

SERVICING FEES Gross Servicing Fee ~~122~~115,~~525~~759.4667 Miscellaneous Fee 490.8237 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee ~~123~~116,~~016~~250.2804

LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT DELINQUENCY STATUS DELINQUENT BANKRUPTCY FORECLOSURE REO Total No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 98 0 0 0 98 4,~~654~~204,~~477~~702.8783 0.00 0.00 0.00 4,~~654~~204,~~477~~702.8783 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 98 0 0 0 98 4,~~654~~204,~~477~~702.8783 0.00 0.00 0.00 4,~~654~~204,~~477~~702.8783 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~862069~~788177% 0.000000% 0.000000% 0.000000% 0.~~862069~~788177% 0.~~943561~~875411% 0.000000% 0.000000% 0.000000% 0.~~943561~~875411% 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.~~862069~~788177% 0.000000% 0.000000% 0.000000% 0.~~862069~~788177% 0.~~943561~~875411% 0.000000% 0.000000% 0.000000% 0.~~943561~~875411%

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 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 21 0 0 0 21 ~~770~~346,~~397~~028.7550 0.00 0.00 0.00 ~~770~~346,~~397~~028.7550 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 21 0 0 0 21 ~~770~~346,~~397~~028.7550 0.00 0.00 0.00 ~~770~~346,~~397~~028.7550 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 1.~~834862~~020408% 0.000000% 0.000000% 0.000000% 1.~~834862~~020408% 10.~~669141~~844708% 0.000000% 0.000000% 0.000000% 10.~~669141~~844708% 60 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 90 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 1.~~834862~~020408% 0.000000% 0.000000% 0.000000% 1.~~834862~~020408% 10.~~669141~~844708% 0.000000% 0.000000% 0.000000% 10.~~669141~~844708% 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 3 0 0 0 3 1,~~881~~424,~~705~~415.5293 0.00 0.00 0.00 1,~~881~~424,~~705~~415.5293 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 3 0 0 0 3 1,~~881~~424,~~705~~415.5293 0.00 0.00 0.00 1,~~881~~424,~~705~~415.5293 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~628931~~638298% 0.000000% 0.000000% 0.000000% 0.~~628931~~638298% 0.~~837938~~643303% 0.000000% 0.000000% 0.000000% 0.~~837938~~643303% 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.~~628931~~638298% 0.000000% 0.000000% 0.000000% 0.~~628931~~638298% 0.~~837938~~643303% 0.000000% 0.000000% 0.000000% 0.~~837938~~643303% DELINQUENT BANKRUPTCY FORECLOSURE REO Total Group 3 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 4 0 0 0 4 2,~~002~~434,~~374~~258.6040 0.00 0.00 0.00 2,~~002~~434,~~374~~258.6040 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 4 0 0 0 4 2,~~002~~434,~~374~~258.6040 0.00 0.00 0.00 2,~~002~~434,~~374~~258.6040 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 0.~~873362~~894855% 0.000000% 0.000000% 0.000000% 0.~~873362~~894855% 01.~~899663~~117014% 0.000000% 0.000000% 0.000000% 01.~~899663~~117014% 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.~~873362~~894855% 0.000000% 0.000000% 0.000000% 0.~~873362~~894855% 01.~~899663~~117014% 0.000000% 0.000000% 0.000000% 01.~~899663~~117014%

OTHER INFORMATION Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance 2219,~~118~~336.9164

SUBORDINATION LEVEL/CLASS PERCENTAGE AND PREPAYMENT PERCENTAGE Current Original $ Original % Current $ Current % Class% Prepayment% Class A 519,224,746.00 91.21426445% ~~448~~440,~~457~~656,~~357~~464.1469 9091.~~95897116~~79431575% 96.~~545598~~454585% 0.000000% Class R-I 519,224,646.00 91.21424689% ~~448~~440,~~457~~656,~~357~~464.1469 9091.~~95897116~~79431575% 0.000000% 0.000000% Class R-II 519,224,596.00 91.21423810% ~~448~~440,~~457~~656,~~357~~464.1469 9091.~~95897116~~79431575% 0.000000% 0.000000% Class R-III 519,224,546.00 91.21422932% ~~448~~440,~~457~~656,~~357~~464.1469 9091.~~95897116~~79431575% 0.000000% 0.000000% Class 2A1 271,447,746.00 47.68629901% ~~231~~227,~~658~~000,~~361~~103.4084 4647.~~98642107~~28699311% 4344.~~972550~~507323% 1,~~272~~255.~~942454~~348748% Class B-1 11,100,246.00 1.95002411% 11,~~070~~062,~~398~~829.7507 2.~~24536863~~30452724% 1.~~209033~~240888% 34.999789% Class B-2 6,546,446.00 1.15004006% 6,~~528~~524,~~843~~379.3811 1.~~32422151~~35911070% 0.~~921147~~945417% 26.665892% Class B-3 3,415,546.00 0.60002247% 3,~~406~~404,~~362~~032.0081 0.~~69089999~~70910309% 0.~~633322~~650008% 18.333752% Class B-4 1,992,446.00 0.35002087% 1,~~987~~985,~~088~~729.5582 0.~~40303393~~41365264% 0.~~287866~~295450% 8.333311% Class B-5 1,138,646.00 0.20003045% 1,~~135~~134,~~584~~807.3283 0.~~23032643~~23639483% 0.~~172707~~177258% 4.999635% Class B-6 0.00 0.00000000% 0.00 0.00000000% 0.~~230326~~236395% 6.667621% Please Refer to the Prospectus Supplement for a Full Description of Loss Exposure

COLLATERAL STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 5.~~288153~~320633% Weighted Average Net Coupon 5.~~006513~~038884% Weighted Average Pass-Through Rate 5.~~005385~~037690% Weighted Average Maturity(Stepdown Calculation ) ~~355~~354 Beginning Scheduled Collateral Loan Count 1,~~096~~044 Number Of Loans Paid In Full 5229 Ending Scheduled Collateral Loan Count 1,~~044~~015 Beginning Scheduled Collateral Balance ~~522~~493,~~051~~032,~~723~~574.4737 Ending Scheduled Collateral Balance ~~493~~480,~~032~~047,~~574~~659.3790 Ending Actual Collateral Balance at 3130-~~Aug~~Sep-2003 ~~493~~480,~~288~~311,~~651~~928.0655 Monthly P &I Constant 2,~~673~~524,~~771~~646.1112 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Class A Optimal Amount 3114,~~113~~971,~~996~~628.4282 Ending Scheduled Balance for Premium Loans ~~493~~480,~~032~~047,~~574~~659.3790 Scheduled Principal ~~356~~338,~~053~~608.0421 Unscheduled Principal 2812,~~663~~646,~~096~~306.0626

Miscellaneous Reporting Senior Percentage Group 1 96.~~943607~~661078% Senior Percentage Group 2 96.~~769344~~595328% Senior Percentage Group 3 96.~~656509~~471492% Senior Prepayment Percentage Group 1 100.000000% Senior Prepayment Percentage Group 2 100.000000% Senior Prepayment Percentage Group 3 100.000000% Subordinate Percentage Group 1 3.~~056393~~338922% Subordinate Percentage Group 2 3.~~230656~~404672% Subordinate Percentage Group 3 3.~~343491~~528508% Subordinate Prepay Percent Group 1 0.000000% Subordinate Prepay Percent Group 2 0.000000% Subordinate Prepay Percent Group 3 0.000000% Average Loss Severity Group 1 0.00 Average Loss Severity Group 2 0.00 Average Loss Severity Group 3 0.00

Group Level Collateral Statement Group Group 1 Group 2 Group 3 Collateral Description Mixed ARM Mixed ARM Mixed ARM Weighted Average Coupon Rate 4.~~877711~~836227 5.~~201588~~248778 5.~~463495~~493530 Weighted Average Net Rate 4.~~529213~~487772 4.~~924305~~970950 5.~~191820~~221652 Weighted Average Maturity ~~356~~355 355 356 ~~357~~ Beginning Loan Count ~~118~~109 ~~499~~477 ~~479~~458 Loans Paid In Full 911 227 2111 Ending Loan Count ~~109~~98 ~~477~~470 ~~458~~447 Beginning Scheduled Balance 5046,~~436~~114,~~010~~959.9764 ~~236~~224,~~698~~440,~~987~~457.2804 ~~234~~222,~~916~~477,~~725~~157.2269 Ending scheduled Balance 4640,~~114~~929,~~959~~135.6420 ~~224~~221,~~440~~292,~~457~~327.0448 ~~222~~217,~~477~~826,~~157~~197.6922 Record Date 0809/3130/2003 0809/3130/2003 0809/3130/2003 Principal And Interest Constant ~~263~~239,~~248~~833.2794 1,~~206~~143,~~371~~084.8456 1,~~204~~141,~~151~~727.0062 Scheduled Principal 5853,~~238~~981.0293 ~~169~~161,~~299~~386.1109 ~~128~~123,~~515~~240.9119 Unscheduled Principal 45,~~262~~131,~~813~~842.3151 122,~~089~~986,~~231~~743.1347 124,~~311~~527,~~051~~720.6228 Scheduled Interest ~~205~~185,~~010~~852.2501 1981,~~026,008~~698.9147 1,~~069~~018,~~555~~487.2843 Servicing Fees 1413,~~647~~390.3981 5451,~~693~~963.9131 5350,~~184~~405.1655 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 0.00 450.9449 39.88 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 ~~190~~172,~~362~~461.8620 ~~970~~929,~~864~~284.0667 1968,~~016,331~~042.2400 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.00 0.00 0.00 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 4.~~529213~~487772 4.~~922019~~968541 5.~~191616~~221437

Group Level Collateral Statement Group Total Collateral Description Mixed ARM Weighted Average Coupon Rate 5.~~288153~~320633 Weighted Average Net Rate 5.~~006513~~038884 Weighted Average Maturity ~~355~~354 Beginning Loan Count 1,~~096~~044 Loans Paid In Full 5229 Ending Loan Count 1,~~044~~015 Beginning Scheduled Balance ~~522~~493,~~051~~032,~~723~~574.4737 Ending scheduled Balance ~~493~~480,~~032~~047,~~574~~659.3790 Record Date 0809/3130/2003 Principal And Interest Constant 2,~~673~~524,~~771~~646.1112 Scheduled Principal ~~356~~338,~~053~~608.0421 Unscheduled Principal 2812,~~663~~646,~~096~~306.0626 Scheduled Interest 2,~~300~~186,~~574~~037.4491 Servicing Fees ~~122~~115,~~525~~759.4667 Master Servicing Fees 0.00 Trustee Fee 0.00 FRY Amount 0.00 Special Hazard Fee 0.00 Other Fee 490.8237 Pool Insurance Fee 0.00 Spread Fee 1 0.00 Spread Fee 2 0.00 Spread Fee 3 0.00 Net Interest 2,~~177~~069,~~558~~787.1687 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.00 Prepayment Penalties 0.00 Special Servicing Fee 0.00 Pass-Through Rate 5.~~005385~~037690

Filing Compare · BEAR STEARNS ARM TRUST 2003-4