10-D 1 srm07004_10d-200709.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-D ASSET-BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the monthly distribution period from: August 02, 2007 to September 01, 2007 Commission File Number of issuing entity: 333-133985-60 Structured Adjustable Rate Mortgage Loan Trust, Series 2007-4 (Exact name of issuing entity as specified in its charter) Commission File Number of depositor: 333-133985 Structured Asset Securities Corporation (Exact name of depositor as specified in its charter) Lehman Brothers Holdings Inc. (Exact name of sponsor as specified in its charter) New York (State or other jurisdiction of incorporation or organization of the issuing entity) Not Applicable (I.R.S. Employer Identification No.) 745 Seventh Avenue New York, NY 10019 (Address of principal executive offices of the issuing entity) (Zip Code) (212) 526-7000 (Telephone number, including area code) Not Applicable (Former name, former address, if changed since last report) Registered/reporting pursuant to (check one) Title of Section Section Section Name of Exchange Class 12(b) 12(g) 15(d) (If Section 12(b)) 1-A1 _____ _____ __X___ ____________ 1-A2 _____ _____ __X___ ____________ 1-A3 _____ _____ __X___ ____________ 1-A4 _____ _____ __X___ ____________ M-1 _____ _____ __X___ ____________ M-2 _____ _____ __X___ ____________ M-3 _____ _____ __X___ ____________ M-4 _____ _____ __X___ ____________ M-5 _____ _____ __X___ ____________ M-6 _____ _____ __X___ ____________ M-7 _____ _____ __X___ ____________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes __X__ No ____ Part I - DISTRIBUTION INFORMATION Item 1. Distribution and Pool Performance Information On September 25, 2007 a distribution was made to holders of Structured Adjustable Rate Mortgage Loan Trust, Series 2007-4. The distribution report is attached as an Exhibit to this Form 10-D. Please see Item 9(b), Exhibit 99.1 for the related information. Part II - OTHER INFORMATION Item 9. Exhibits. (a) The following is a list of documents filed as part of this Report on Form 10-D: (99.1) Monthly report distributed to holders of Structured Adjustable Rate Mortgage Loan Trust, Series 2007-4, relating to the September 25, 2007 distribution. (b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above and in the Exhibit Index that immediately follows the signature page hereof. SIGNATURES 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 thereunto duly authorized. Structured Adjustable Rate Mortgage Loan Trust, Series 2007-4 (Issuing Entity) Aurora Loan Services LLC (Master Servicer) /s/ Michele Olds Michele Olds, Vice President Servicer Oversight Date: October 02, 2007 EXHIBIT INDEX Exhibit Number Description EX-99.1 Monthly report distributed to holders of Structured Adjustable Rate Mortgage Loan Trust, Series 2007-4, relating to the September 25, 2007 distribution. EX-99.1 Structured Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates Distribution Date: 9/25/2007 Structured Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates Series 2007-4 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 8480 Stagecoach Circle Frederick, MD 21701-4747 www.ctslink.com Telephone: 1-866-846-4526 Fax: 240-586-8675

Certificateholder Distribution Summary Class CUSIP Record Certificate Beginning Interest Date Pass-Through Certificate Distribution Rate Balance 1-A1 86363LAA1 0509/24/2007 5.~~56000~~74500% ~~148~~140,~~545~~871,~~000~~524.0093 ~~688~~651,~~258~~941.5068 1-A2 86363LAB9 0509/24/2007 5.~~54000~~72500% ~~200~~189,~~000~~668,~~000~~484.0020 ~~923~~874,~~333~~714.3317 1-A3 86363LAL7 0509/24/2007 5.~~58000~~76500% ~~100~~94,~~000~~834,~~000~~242.0010 ~~465~~440,~~000~~412.0085 1-A4 86363LAM5 0509/24/2007 5.~~62000~~80500% 4947,~~838~~263,~~000~~489.0058 ~~233~~221,~~407~~015.9789 M-1 86363LAC7 0509/24/2007 5.~~77000~~95500% 16,251,000.00 7877,~~140~~957.2340 M-2 86363LAD5 0509/24/2007 56.~~87000~~05500% 4,333,000.00 21,~~195~~134.5981 M-3 86363LAE3 0509/24/2007 6.~~42000~~60500% 6,500,000.00 34,~~775~~584.0051 M-4 86363LAF0 0509/24/2007 67.~~82000~~00500% 2,708,000.00 15,~~390~~281.4702 M-5 86363LAG8 0509/24/2007 7.~~07000~~25500% 3,521,000.00 20,~~744~~577.5680 M-6 86363LAH6 0509/24/2007 7.~~07000~~25500% 2,708,000.00 15,~~954~~826.6338 M-7 86363LAJ2 0509/24/2007 7.~~07000~~25500% 4,604,000.00 2726,~~125~~907.2318 1-AP 86363LAK9 0509/24/2007 0.00000% 100.00 633,~~779~~939.2452 X SRM0704X 0509/24/2007 0.00000% 2,~~714~~708,~~183~~610.9092 ~~557~~534,~~621~~309.4051 R-I SRM0704RI 0509/24/2007 0.00000% 0.00 0.00 C SRM0704C 0509/24/2007 0.00000% 0.00 0.00 Totals ~~541~~515,~~722~~971,~~283~~451.9073 32,~~087~~968,~~726~~602.1572

Certificateholder Distribution Summary (continued) Class Principal Current Ending Total Cumulative Distribution Realized Certificate Distribution Realized Loss Balance Losses 1-A1 12,~~364~~718,~~580~~846.6994 0.00 ~~147~~138,~~180~~152,~~419~~677.3199 23,~~052~~370,~~839~~788.1962 0.00 1-A2 13,~~837~~660,~~262~~637.3744 0.00 ~~198~~186,~~162~~007,~~737~~846.6376 24,~~760~~535,~~595~~351.7061 0.00 1-A3 ~~918~~1,~~631~~830,318.1872 0.00 9993,~~081~~003,~~368~~923.8238 12,~~383~~270,~~631~~731.1857 0.00 1-A4 ~~457~~912,~~827~~194.4124 0.00 4946,~~380~~351,~~172~~295.5933 ~~691~~1,~~235~~133,210.3813 0.00 M-1 0.00 0.00 16,251,000.00 7877,~~140~~957.2340 0.00 M-2 0.00 0.00 4,333,000.00 21,~~195~~134.5981 0.00 M-3 0.00 0.00 6,500,000.00 34,~~775~~584.0051 0.00 M-4 0.00 0.00 2,708,000.00 15,~~390~~281.4702 0.00 M-5 0.00 0.00 3,521,000.00 20,~~744~~577.5680 0.00 M-6 0.00 0.00 2,708,000.00 15,~~954~~826.6338 0.00 M-7 0.00 0.00 4,604,000.00 2726,~~125~~907.2318 0.00 1-AP 0.00 0.00 100.00 633,~~779~~939.2452 0.00 X 0.00 0.00 2,708,610.92 ~~557~~534,~~621~~309.4051 0.00 R-I 0.00 0.00 0.00 0.00 0.00 C 0.00 0.00 0.00 0.00 0.00 Totals 49,~~578~~121,~~301~~997.6534 0.00 ~~537~~506,~~138~~849,~~409~~454.2738 712,~~666~~090,~~027~~600.8006 0.00 This report has been compiled from information provided to Wells Fargo Bank, N.A., by various third parties, which may include the Servicer, Master Servicer, Special Servicer and others. Wells Fargo Bank, N.A., has not independently confirmed the accuracy of information received from these third parties and assumes no duty to do so. Wells Fargo Bank, N.A., expressly disclaims any responsibility for the accuracy or completeness of information furnished by third parties. All Record Dates are based upon the governing documents and logic set forth as of closing.

Principal Distribution Statement Class Original Beginning Scheduled UnScheduled Accretion Face Certificate Principal Principal Amount Balance Distribution Distribution 1-A1 148,545,000.00 ~~148~~140,~~545~~871,~~000~~524.0093 0.00 12,~~364~~718,~~580~~846.6994 0.00 1-A2 200,000,000.00 ~~200~~189,~~000~~668,~~000~~484.0020 0.00 13,~~837~~660,~~262~~637.3744 0.00 1-A3 100,000,000.00 ~~100~~94,~~000~~834,~~000~~242.0010 0.00 ~~918~~1,~~631~~830,318.1872 0.00 1-A4 49,838,000.00 4947,~~838~~263,~~000~~489.0058 0.00 ~~457~~912,~~827~~194.4124 0.00 M-1 16,251,000.00 16,251,000.00 0.00 0.00 0.00 M-2 4,333,000.00 4,333,000.00 0.00 0.00 0.00 M-3 6,500,000.00 6,500,000.00 0.00 0.00 0.00 M-4 2,708,000.00 2,708,000.00 0.00 0.00 0.00 M-5 3,521,000.00 3,521,000.00 0.00 0.00 0.00 M-6 2,708,000.00 2,708,000.00 0.00 0.00 0.00 M-7 4,604,000.00 4,604,000.00 0.00 0.00 0.00 1-AP 100.00 100.00 0.00 0.00 0.00 X 2,714,183.90 2,~~714~~708,~~183~~610.9092 0.00 0.00 0.00 R-I 0.00 0.00 0.00 0.00 0.00 C 0.00 0.00 0.00 0.00 0.00 Totals 541,722,283.90 ~~541~~515,~~722~~971,~~283~~451.9073 0.00 49,~~578~~121,~~301~~997.6534 0.00

Principal Distribution Statement (continued) Class Realized Total Ending Ending Total Loss Principal Certificate Certificate Principal Reduction Balance Percentage Distribution 1-A1 0.00 12,~~364~~718,~~580~~846.6994 ~~147~~138,~~180~~152,~~419~~677.3199 0.~~99081369~~93003923 12,~~364~~718,~~580~~846.6994 1-A2 0.00 13,~~837~~660,~~262~~637.3744 ~~198~~186,~~162~~007,~~737~~846.6376 0.~~99081369~~93003923 13,~~837~~660,~~262~~637.3744 1-A3 0.00 ~~918~~1,~~631~~830,318.1872 9993,~~081~~003,~~368~~923.8238 0.~~99081369~~93003923 ~~918~~1,~~631~~830,318.1872 1-A4 0.00 ~~457~~912,~~827~~194.4124 4946,~~380~~351,~~172~~295.5933 0.~~99081369~~93003923 ~~457~~912,~~827~~194.4124 M-1 0.00 0.00 16,251,000.00 1.00000000 0.00 M-2 0.00 0.00 4,333,000.00 1.00000000 0.00 M-3 0.00 0.00 6,500,000.00 1.00000000 0.00 M-4 0.00 0.00 2,708,000.00 1.00000000 0.00 M-5 0.00 0.00 3,521,000.00 1.00000000 0.00 M-6 0.00 0.00 2,708,000.00 1.00000000 0.00 M-7 0.00 0.00 4,604,000.00 1.00000000 0.00 1-AP 0.00 0.00 100.00 1.00000000 0.00 X 0.00 0.00 2,708,610.92 0.99794672 0.00 R-I 0.00 0.00 0.00 0.00000000 0.00 C 0.00 0.00 0.00 0.00000000 0.00 Totals $0.00 49,~~578~~121,~~301~~997.6534 ~~537~~506,~~138~~849,~~409~~454.2738 0.~~99153833~~93562600 49,~~578~~121,~~301~~997.6534

Principal Distribution Factors Statement Class Original Beginning Scheduled UnScheduled Accretion Face Certificate Principal Principal Amount Balance Distribution Distribution 1-A1 148,545,000.00 ~~1000~~948.~~00000000~~34242102 0.00000000 918.~~18631182~~30318718 0.00000000 1-A2 200,000,000.00 ~~1000~~948.~~00000000~~34242100 0.00000000 918.~~18631185~~30318720 0.00000000 1-A3 100,000,000.00 ~~1000~~948.~~00000000~~34242100 0.00000000 918.~~18631180~~30318720 0.00000000 1-A4 49,838,000.00 ~~1000~~948.~~00000000~~34242104 0.00000000 918.~~18631185~~30318713 0.00000000 M-1 16,251,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-2 4,333,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-3 6,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-4 2,708,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-5 3,521,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-6 2,708,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-7 4,604,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 1-AP 100.00 1000.00000000 0.00000000 0.00000000 0.00000000 X 2,714,183.90 ~~1000~~997.~~00000000~~94671982 0.00000000 0.00000000 0.00000000 R-I 0.00 0.00000000 0.00000000 0.00000000 0.00000000 C 0.00 0.00000000 0.00000000 0.00000000 0.00000000

Principal Distribution Factors Statement (continued) Class Realized Total Ending Ending Total Loss Principal Certificate Certificate Principal Reduction Balance Percentage Distribution 1-A1 0.00000000 918.~~18631182~~30318718 ~~990~~930.~~81368818~~03923383 0.~~99081369~~93003923 918.~~18631182~~30318718 1-A2 0.00000000 918.~~18631185~~30318720 ~~990~~930.~~81368815~~03923380 0.~~99081369~~93003923 918.~~18631185~~30318720 1-A3 0.00000000 918.~~18631180~~30318720 ~~990~~930.~~81368820~~03923380 0.~~99081369~~93003923 918.~~18631180~~30318720 1-A4 0.00000000 918.~~18631185~~30318713 ~~990~~930.~~81368815~~03923372 0.~~99081369~~93003923 918.~~18631185~~30318713 M-1 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-2 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-3 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-4 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-5 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-6 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-7 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 1-AP 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 X 0.00000000 0.00000000 997.94671982 0.99794672 0.00000000 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 C 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 NOTE: All classes per $1,000 denomination.

Interest Distribution Statement Class Accrual Accrual Current Beginning Current Payment of Dates Days Certificate Certificate/ Accrued Unpaid Interest Rate Notional Interest Shortfall (1) Balance 1-A1 0408/2527/07 - 0509/24/07 3029 5.~~56000~~74500% ~~148~~140,~~545~~871,~~000~~524.0093 ~~688~~651,~~258~~941.5068 0.00 1-A2 0408/2527/07 - 0509/24/07 3029 5.~~54000~~72500% ~~200~~189,~~000~~668,~~000~~484.0020 ~~923~~874,~~333~~714.3317 0.00 1-A3 0408/2527/07 - 0509/24/07 3029 5.~~58000~~76500% ~~100~~94,~~000~~834,~~000~~242.0010 ~~465~~440,~~000~~412.0085 0.00 1-A4 0408/2527/07 - 0509/24/07 3029 5.~~62000~~80500% 4947,~~838~~263,~~000~~489.0058 ~~233~~221,~~407~~015.9789 0.00 M-1 0408/2527/07 - 0509/24/07 3029 5.~~77000~~95500% 16,251,000.00 7877,~~140~~957.2340 0.00 M-2 0408/2527/07 - 0509/24/07 3029 56.~~87000~~05500% 4,333,000.00 21,~~195~~134.5981 0.00 M-3 0408/2527/07 - 0509/24/07 3029 6.~~42000~~60500% 6,500,000.00 34,~~775~~584.0051 0.00 M-4 0408/2527/07 - 0509/24/07 3029 67.~~82000~~00500% 2,708,000.00 15,~~390~~281.4702 170.0700 M-5 0408/2527/07 - 0509/24/07 3029 7.~~07000~~25500% 3,521,000.00 20,~~744~~577.5680 ~~755~~616.7306 M-6 0408/2527/07 - 0509/24/07 3029 7.~~07000~~25500% 2,708,000.00 15,~~954~~826.6338 ~~581~~473.2381 M-7 0408/2527/07 - 0509/24/07 3029 7.~~07000~~25500% 4,604,000.00 2726,~~125~~907.2318 ~~988~~805.1855 1-AP N/A N/A 0.00000% 100.00 0.00 0.00 X N/A N/A 0.00000% 2,~~714~~708,~~183~~610.9092 0.00 0.00 R-I N/A N/A 0.00000% 0.00 0.00 0.00 C N/A N/A 0.00000% 0.00 0.00 0.00 Totals 2,~~523~~400,~~325~~353.5169 21,~~342~~895.2142

Interest Distribution Statement (continued) Class Current Non-Supported Total Remaining Ending Interest Interest Interest Unpaid Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance 1-A1 0.00 0.00 ~~688~~651,~~258~~941.5068 0.00 ~~147~~138,~~180~~152,~~419~~677.3199 1-A2 0.00 0.00 ~~923~~874,~~333~~714.3317 0.00 ~~198~~186,~~162~~007,~~737~~846.6376 1-A3 0.00 0.00 ~~465~~440,~~000~~412.0085 0.00 9993,~~081~~003,~~368~~923.8238 1-A4 0.00 0.00 ~~233~~221,~~407~~015.9789 0.00 4946,~~380~~351,~~172~~295.5933 M-1 0.00 0.00 7877,~~140~~957.2340 0.00 16,251,000.00 M-2 0.00 0.00 21,~~195~~134.5981 0.00 4,333,000.00 M-3 0.00 0.00 34,~~775~~584.0051 0.00 6,500,000.00 M-4 170.0700 0.00 15,~~390~~281.4702 0.00 2,708,000.00 M-5 ~~755~~616.7306 0.00 20,~~744~~577.5680 0.00 3,521,000.00 M-6 ~~581~~473.2381 0.00 15,~~954~~826.6338 0.00 2,708,000.00 M-7 ~~988~~805.1855 0.00 2726,~~125~~907.2318 0.00 4,604,000.00 1-AP 0.00 0.00 633,~~779~~939.2452 0.00 100.00 X 0.00 0.00 ~~557~~534,~~621~~309.4051 0.00 2,708,610.92 R-I 0.00 0.00 0.00 0.00 0.00 C 0.00 0.00 0.00 0.00 0.00 Totals 21,~~342~~895.2142 0.00 32,~~087~~968,~~726~~602.1572 0.00 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable.

Interest Distribution Factors Statement Class Original Current Beginning Current Payment of Face Certificate Certificate/ Accrued Unpaid Interest Amount Rate Notional Interest Shortfall (1) Balance 1-A1 148,545,000.00 5.~~56000~~74500% ~~1000~~948.~~00000000~~34242102 4.~~63333333~~38884971 0.00000000 1-A2 200,000,000.00 5.~~54000~~72500% ~~1000~~948.~~00000000~~34242100 4.~~61666665~~37357085 0.00000000 1-A3 100,000,000.00 5.~~58000~~76500% ~~1000~~948.~~00000000~~34242100 4.~~65000000~~40412850 0.00000000 1-A4 49,838,000.00 5.~~62000~~80500% ~~1000~~948.~~00000000~~34242104 4.~~68333340~~43468618 0.00000000 M-1 16,251,000.00 5.~~77000~~95500% 1000.00000000 4.~~80833364~~79708326 0.00000000 M-2 4,333,000.00 56.~~87000~~05500% 1000.00000000 4.~~89166628~~87763905 0.00000000 M-3 6,500,000.00 6.~~42000~~60500% 1000.00000000 5.~~35000000~~32069385 0.00000000 M-4 2,708,000.00 67.~~82000~~00500% 1000.00000000 5.~~68333456~~64291728 0.~~00630355~~00000000 M-5 3,521,000.00 7.~~07000~~25500% 1000.00000000 5.~~89166714~~84430560 0.~~21463505~~17496734 M-6 2,708,000.00 7.~~07000~~25500% 1000.00000000 5.~~89166544~~84430576 0.~~21463442~~17496677 M-7 4,604,000.00 7.~~07000~~25500% 1000.00000000 5.~~89166594~~84430495 0.~~21463510~~17496742 1-AP 100.00 0.00000% 1000.00000000 0.00000000 0.00000000 X 2,714,183.90 0.00000% ~~1000~~997.~~00000000~~94671982 0.00000000 0.00000000 R-I 0.00 0.00000% 0.00000000 0.00000000 0.00000000 C 0.00 0.00000% 0.00000000 0.00000000 0.00000000

Interest Distribution Factors Statement (continued) Class Current Non-Supported Total Remaining Unpaid Ending Interest Interest Interest Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance 1-A1 0.00000000 0.00000000 4.~~63333333~~38884971 0.00000000 ~~990~~930.~~81368818~~03923383 1-A2 0.00000000 0.00000000 4.~~61666665~~37357085 0.00000000 ~~990~~930.~~81368815~~03923380 1-A3 0.00000000 0.00000000 4.~~65000000~~40412850 0.00000000 ~~990~~930.~~81368820~~03923380 1-A4 0.00000000 0.00000000 4.~~68333340~~43468618 0.00000000 ~~990~~930.~~81368815~~03923372 M-1 0.00000000 0.00000000 4.~~80833364~~79708326 0.00000000 1000.00000000 M-2 0.00000000 0.00000000 4.~~89166628~~87763905 0.00000000 1000.00000000 M-3 0.00000000 0.00000000 5.~~35000000~~32069385 0.00000000 1000.00000000 M-4 0.~~00630355~~00000000 0.00000000 5.~~68333456~~64291728 0.00000000 1000.00000000 M-5 0.~~21463505~~17496734 0.00000000 5.~~89166714~~84430560 0.00000000 1000.00000000 M-6 0.~~21463442~~17496677 0.00000000 5.~~89166544~~84430576 0.00000000 1000.00000000 M-7 0.~~21463510~~17496742 0.00000000 5.~~89166594~~84430495 0.00000000 1000.00000000 1-AP 0.00000000 0.00000000 ~~67792~~339395.~~40000000~~20000000 0.00000000 1000.00000000 X 0.00000000 0.00000000 ~~205~~196.~~44716959~~85825636 0.00000000 997.94671982 R-I 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 C 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable. NOTE: All classes per $1,000 denomination.

Certificateholder Account Statement CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 7,~~530~~222,~~301~~973.9263 Reserve Funds and Credit Enhancements 0.00 Proceeds from Repurchased Loans ~~169~~4,~~792~~907,383.7108 Servicer Advances 75317,~~469~~824.3900 Gains & Subsequent Recoveries (Realized Losses) 0.00 Prepayment Penalties 633,~~779~~939.2452 Swap/Cap Payments 09,447.0068 Total Deposits 712,~~782~~491,~~343~~567.2691 Withdrawals Swap Payments 0.00 Reserve Funds and Credit Enhancements 0.00 Reimbursement for Servicer Advances 0291,684.0093 Total Administration Fees ~~116~~109,~~315~~282.4692 Payment of Interest and Principal 712,~~666~~090,~~027~~600.8006 Total Withdrawals (Pool Distribution Amount) 712,~~782~~491,~~343~~567.2691 Ending Balance 0.00 Servicer Advances are calculated as delinquent scheduled principal and interest.

ADMINISTRATION FEES Gross Servicing Fee* ~~112~~106,~~253~~918.5905 Trustee Fee -Wells Fargo Bank, N.A. 42,~~061~~364.87 Supported Prepayment/Curtailment Interest Shortfall 0.00 Total Administration Fees ~~116~~109,~~315~~282.4692 *Servicer Payees include: AURORA LOAN SERVICES LLC; AURORA LOAN SERVICING INC.~~; AURORA LOAN SERVICING INC.~~

Reserve and Guaranty Funds Account Name Beginning Current Current Ending Balance Withdrawals Deposits Balance Basis Risk Reserve Fund 0.00 21,~~342~~895.2143 21,~~342~~895.2143 0.00 Funding Account ~~140,793~~0.5800 ~~140,793~~0.5800 0.00 0.00 Supplemetal Interest Trust 0.00 09,447.0068 09,447.0068 0.00 Hedge Funds Account Name Funds In (A) Funds Out(B) Net Amount(A - B) Interest Rate Cap Agreement- Lehman 0.00 0.00 0.00 Swap Agreement- HSBC 02,080,380.0003 02,070,932.0035 09,447.0068

Collateral Statement Total Collateral Description Mixed Fixed & Arm Weighted Average Coupon Rate 7.~~070160~~049933 Weighted Average Net Rate 6.~~821501~~801272 Weighted Average Pass-Through Rate 6.~~812437~~795772 Weighted Average Remaining Term ~~358~~354 Principal And Interest Constant 3,~~229~~068,~~428~~905.2856 Beginning Loan Count 1,~~802~~726 Loans Paid in Full 1832 Ending Loan Count 1,~~784~~694 Beginning Scheduled Balance ~~541~~515,~~722~~971,~~183~~351.9073 Ending Scheduled Balance ~~537~~506,~~138~~849,~~309~~354.2738 Actual Ending Collateral Balance ~~537~~506,~~170~~889,~~849~~882.3269 Scheduled Principal 3837,~~534~~602.2576 Unscheduled Principal 49,~~405~~084,~~341~~394.9859 Negative Amortized Principal 0.00 Scheduled Interest 3,~~190~~031,~~894~~302.0380 Servicing Fees ~~112~~106,~~253~~918.5905 Master Servicing Fees 0.00 Trustee Fee 42,~~061~~364.87 FRY Amount 0.00 Special Hazard Fee 0.00 Other Fee 0.00 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 32,~~074~~922,~~578~~019.5788 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalty Waived Amount 0.00 Prepayment Penalty Waived Count 0 Prepayment Penalty Paid Amount 633,~~779~~939.2452 Prepayment Penalty Paid Count 24 Special Servicing Fee 0.00

~~Miscellaneous~~Additional Reporting - Deal Level ~~Miscellaneous~~Cash Reporting ~~Item~~Monthly ~~Value~~Excess ~~Funding~~Cashflow 536,204.95 Informational Reporting Libor Rate 5.505000% Senior Enhancement Percentage 8.549604% Structural Reporting Targeted Overcollateralization Amount ~~$140~~2,~~793~~708,610.5892 ~~Funding~~Overcollateralization ~~Principal~~Amount ~~$139~~2,~~998~~708,610.4092 ~~Funding~~Overcollateralization ~~Interest~~Deficiency ~~$795~~0.1800 Trigger Event Reporting Stepdown Date NO Trigger Event NO Delinquency Event Trigger Result Fail Threshold Value 3.419841% Calculated Value 4.533036% Cumulative Loss Trigger Event Trigger Result Pass Calculated Value 0.000000% Threshold Value 0.300000% Trigger Trigger Result N/A

~~Additional~~Delinquency ~~Reporting~~Status - ~~Deal~~MBA ~~Level~~Delinquency ~~Cash~~Calculation ~~Reporting~~Method ~~Monthly~~DELINQUENT ~~Excess~~BANKRUPTCY ~~Cashflow~~FORECLOSURE ~~554,390~~REO Total No.63 ~~Structural~~of ~~Reporting~~Loans ~~Targeted~~No. ~~Overcollateralization~~of ~~Amount~~Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 74 2 0 0 76 22,~~708~~359,~~610~~649.60 378,983.98 0.00 0.00 22,738,633.58 60 Days 44 0 0 0 44 11,516,277.70 0.00 0.00 0.00 11,516,277.70 90 Days 23 1 0 0 24 8,508,751.36 92,800.00 ~~Libor~~0.00 ~~Rate~~0.00 58,601,551.~~320000%~~36 ~~Overcollateralization~~120 ~~Amount~~Days 1 1 22 0 24 407,594.84 324,000.00 6,144,490.98 0.00 6,876,085.82 150 Days 1 0 9 0 10 39,477.86 0.00 2,~~708~~274,~~610~~950.9200 ~~Overcollateralization~~0.00 ~~Deficiency~~2,314,427.86 180+ Days 1 0 0 0 1 339,000.00 ~~Senior~~0.00 ~~Enhancement~~0.00 ~~Percentage~~0.00 339,000.00 Totals 144 4 31 0 179 43,170,751.36 795,783.98 8,419,440.~~068533~~98 0.00 52,385,976.32 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0.000000% ~~Trigger~~0.000000% ~~Event~~0.000000% ~~Reporting~~0.000000% ~~Stepdown~~0.000000% ~~Date~~0.000000% NO0.000000% ~~Trigger~~0.000000% ~~Event~~30 NODays ~~Delinquency~~4.368359% ~~Event~~0.118064% ~~Trigger~~0.000000% ~~Result~~0.000000% ~~Pass~~4.486423% ~~Threshold~~4.411145% ~~Value~~0.074767% 30.~~226998~~000000% ~~Calculated~~0.000000% ~~Value~~4.485912% 60 Days 2.597403% 0.000000% ~~Cumulative~~0.000000% ~~Loss~~0.000000% ~~Trigger~~2.597403% ~~Event~~2.271949% ~~Trigger~~0.000000% ~~Result~~0.000000% ~~Pass~~0.000000% ~~Calculated~~2.271949% ~~Value~~90 Days 1.357733% 0.059032% 0.000000% ~~Threshold~~0.000000% ~~Value~~1.416765% 1.678619% 0.~~300000~~018308% ~~Trigger~~0.000000% ~~Trigger~~0.000000% ~~Result~~1.696927% ~~N/A~~120 ~~Threshold~~Days ~~Value~~0.059032% 0.059032% 1.298701% 0.000000% ~~Calculated~~1.416765% ~~Value~~0.080411% 0.063919% 1.212194% 0.000000% 1.356525% 150 Days 0.059032% 0.000000% 0.531287% 0.000000% 0.590319% 0.007788% 0.000000% 0.448806% 0.000000% 0.456594% 180+ Days 0.059032% 0.000000% 0.000000% 0.000000% 0.059032% 0.066878% 0.000000% 0.000000% 0.000000% 0.066878% Totals 8.500590% 0.236128% 1.829988% 0.000000% 10.566706% 8.516791% 0.156993% 1.661000% 0.000000% 10.334784% Please refer to CTSLink.com for a list of delinquency code descriptions.

~~Delinquency~~Current ~~Status~~Period -Class ~~MBA~~A ~~Delinquency~~Insufficient ~~Calculation~~Funds ~~Method DELINQUENT BANKRUPTCY FORECLOSURE REO Total No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance~~ 0~~-29 Days 0 0 0 0 0~~.00 ~~0.00~~Principal ~~0.00~~Balance ~~0.00~~of 30Contaminated ~~Days~~Properties 52 0 ~~0 0 52 12,099,678~~.~~42 0.~~00 ~~0.00~~Periodic ~~0.00~~Advance 12317,~~099,678~~824.~~42 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 52 0 0 0 52 12,099,678.42 0.00 0.00 0.00 12,099,678.42 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 2.914798% 0.000000% 0.000000% 0.000000% 2.914798% 2.252482% 0.000000% 0.000000% 0.000000% 2.252482% 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 2.914798% 0.000000% 0.000000% 0.000000% 2.914798% 2.252482% 0.000000% 0.000000% 0.000000% 2.252482% Please refer to CTSLink.com for a list of delinquency code descriptions.

~~Current~~180+ ~~Period~~Delinquency ~~Class~~Summary ASummary ~~Insufficient~~Days ~~Funds~~Number ~~0.00~~of ~~Principal~~Outstanding ~~Balance~~Percentage of ~~Contaminated~~Delinquent ~~Properties~~Loans Actual Balance(%) Balance($) 240 - 269 1 339,000.00 0.067 Total 1 339,000.00 ~~Periodic~~0.067 ~~Advance~~This 75report includes all loans greater than 180 days delinquent regardless of status (REO,~~469~~ Foreclosure, Bankruptcy).39

Foreclosure Detail - All Mortgage Loans in Foreclosure during Current Period

Summary 12 Month Foreclosure ~~Detail~~History* -New ~~All~~Foreclosure ~~Mortgage~~Loans Month Foreclosure Percentage Loans in Foreclosure ~~during~~19 Oct-06 0.000% Original Principal Balance 5,370,037.00 Nov-06 0.000% Current ~~Period~~Actual ~~Summary~~Balance 5,369,490.98 Dec-06 No0.000% Jan-07 0.000% Current Foreclosure ~~Information~~Total toFeb-07 0.000% Loans in Foreclosure 31 Mar-07 0.000% Original Principal Balance 8,419,987.00 Apr-07 0.000% Current Actual Balance 8,419,440.98 May-07 0.000% Jun-07 0.000% Jul-07 0.000% Aug-07 0.845% Sep-07 1.661% *The text reported in the above table is presented graphically on the monthly bond remittance report. ~~this~~The ~~period~~monthly bond remittance report can be viewed online at www.ctslink.com.

Foreclosure Loan Detail - All Mortgage Loans in Foreclosure during Current Period Month Loan First Original Loan Entered Payment LTV at Principal Group Number FC Date State Origination Balance NoSummary ~~Foreclosure~~0031304108 ~~Loans~~Sep-2007 ~~this~~01-Sep-2005 ~~Period~~TX 80.00 130,400.00 Summary 0033084526 Sep-2007 01-Sep-2006 CA 80.00 316,000.00 Summary 0033223892 Sep-2007 01-Oct-2006 MA 80.00 464,000.00 Summary 0033702317 Aug-2007 01-Feb-2007 FL 80.00 344,000.00 Summary 0033805656 Sep-2007 01-Mar-2007 NV 80.00 280,000.00 Summary 0039992466 Aug-2007 01-Mar-2007 FL 80.00 388,800.00 Summary 0040003683 Sep-2007 01-Mar-2007 KY 75.00 50,250.00 Summary 0040011363 Aug-2007 01-Mar-2007 NV 69.63 215,850.00 Summary 0040014599 Sep-2007 01-Mar-2007 CA 80.00 196,000.00 Summary 0040029100 Aug-2007 01-Mar-2007 AZ 80.00 236,000.00 Summary 0040032203 Sep-2007 01-Mar-2007 MO 80.00 130,400.00 Summary 0040033979 Sep-2007 01-Mar-2007 CA 80.00 196,000.00 Summary 0040055683 Sep-2007 01-Mar-2007 NV 80.00 416,000.00 Summary 0040074460 Sep-2007 01-Mar-2007 CA 80.00 327,920.00 Summary 0040076432 Sep-2007 01-Mar-2007 CA 80.00 336,800.00 Summary 0040091183 Aug-2007 01-Mar-2007 AZ 79.99 318,300.00 Summary 0040092447 Sep-2007 01-Mar-2007 NV 80.00 544,000.00 Summary 0040092488 Aug-2007 01-Mar-2007 NV 80.00 168,000.00 Summary 0040102626 Sep-2007 01-Mar-2007 AL 80.00 87,200.00 Summary 0040116725 Aug-2007 01-Apr-2007 UT 80.00 128,000.00 Summary 0040137408 Sep-2007 01-Apr-2007 UT 80.00 156,000.00 Summary 0040143539 Sep-2007 01-Apr-2007 CA 80.00 276,000.00 Summary 0040147050 Aug-2007 01-Apr-2007 IN 80.00 200,000.00 Summary 0040147241 Aug-2007 01-Apr-2007 NJ 80.00 296,000.00 Summary 0040198442 Aug-2007 01-Apr-2007 NV 80.00 292,000.00 Summary 0040226359 Sep-2007 01-Mar-2007 CA 80.00 572,000.00 Summary 0045205762 Sep-2007 01-Mar-2007 MO 80.00 361,067.00 Summary 0045250156 Sep-2007 01-Apr-2007 MA 78.55 326,000.00 Summary 0045354776 Sep-2007 01-Apr-2007 WA 80.00 204,000.00 Summary 0045599602 Aug-2007 01-May-2007 FL 79.41 135,000.00 Summary 0123215253 Aug-2007 01-Dec-2006 CA 80.00 328,000.00

Foreclosure Loan Detail - All Mortgage Loans in Foreclosure during Current Period (continued) Current Paid Current Approximate Loan Actual To Months Loan Delinquent Group Number Balance Date Delinquent Rate Interest NoSummary ~~Foreclosure~~0031304108 ~~Loans~~130,151.89 ~~this~~01-Apr-2007 ~~Period~~4 6.250% 3,905.86 Summary 0033084526 316,000.00 01-Apr-2007 4 6.875% 10,467.54 Summary 0033223892 464,000.00 01-Apr-2007 4 8.125% 18,270.00 Summary 0033702317 344,000.00 01-Apr-2007 4 7.500% 12,469.98 Summary 0033805656 280,000.00 01-Apr-2007 4 7.500% 10,150.02 Summary 0039992466 388,800.00 01-Mar-2007 5 8.375% 15,795.00 Summary 0040003683 50,190.45 01-Apr-2007 4 8.625% 2,099.60 Summary 0040011363 215,850.00 01-Mar-2007 5 7.375% 7,689.66 Summary 0040014599 195,960.69 01-Apr-2007 4 7.250% 6,859.08 Summary 0040029100 236,000.00 01-Mar-2007 5 7.500% 8,554.98 Summary 0040032203 130,200.95 01-Apr-2007 4 7.375% 4,632.40 Summary 0040033979 196,000.00 01-Apr-2007 4 7.250% 6,860.04 Summary 0040055683 416,000.00 01-Apr-2007 4 7.000% 14,040.00 Summary 0040074460 327,920.00 01-Apr-2007 4 7.625% 12,092.04 Summary 0040076432 336,800.00 01-Apr-2007 4 8.125% 13,261.50 Summary 0040091183 318,300.00 01-Mar-2007 5 7.625% 11,737.32 Summary 0040092447 544,000.00 01-Apr-2007 4 7.375% 19,380.00 Summary 0040092488 168,000.00 01-Mar-2007 5 8.500% 6,930.00 Summary 0040102626 87,200.00 01-Apr-2007 4 8.000% 3,378.96 Summary 0040116725 128,000.00 01-Mar-2007 5 6.875% 4,239.96 Summary 0040137408 156,000.00 01-Apr-2007 4 7.000% 5,265.00 Summary 0040143539 276,000.00 01-Apr-2007 4 6.875% 9,142.50 Summary 0040147050 200,000.00 01-Mar-2007 5 7.875% 7,610.89 Summary 0040147241 296,000.00 01-Apr-2007 4 8.250% 11,839.98 Summary 0040198442 292,000.00 01-Mar-2007 5 7.250% 10,220.04 Summary 0040226359 572,000.00 01-Apr-2007 4 7.500% 20,734.98 Summary 0045205762 361,067.00 01-Apr-2007 4 7.750% 13,540.02 Summary 0045250156 326,000.00 01-Apr-2007 4 6.750% 10,594.98 Summary 0045354776 204,000.00 01-Apr-2007 4 7.875% 7,777.50 Summary 0045599602 135,000.00 01-Apr-2007 4 6.500% 3,487.47 Summary 0123215253 328,000.00 01-Mar-2007 5 8.125% 12,915.00

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period

Summary 12 Month Bankruptcy ~~Detail~~History* -New ~~All~~Bankruptcy ~~Mortgage~~Loans Month Bankruptcy Percentage Loans in Bankruptcy ~~during~~2 Oct-06 0.000% Original Principal Balance 416,800.00 Nov-06 0.000% Current ~~Period~~Actual ~~Summary~~Balance 416,800.00 Dec-06 No0.000% Jan-07 0.000% Current Bankruptcy ~~Information~~Total toFeb-07 0.000% Loans in Bankruptcy 4 Mar-07 0.000% Original Principal Balance 795,784.00 Apr-07 0.000% Current Actual Balance 795,783.98 May-07 0.000% Jun-07 0.022% Jul-07 0.022% Aug-07 0.095% Sep-07 0.157% *The text reported in the above table is presented graphically on the monthly bond remittance report. ~~this~~The ~~period~~monthly bond remittance report can be viewed online at www.ctslink.com.

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period Group Loan Month Loan First State LTV at Original Number Entered Payment Origination Principal Bankruptcy Date Balance NoSummary ~~Bankruptcy~~0040109092 ~~Loans~~Sep-2007 ~~this~~01-Apr-2007 ~~Period~~IL 80.00 324,000.00 Summary 0040120461 Aug-2007 01-Apr-2007 CA 80.00 230,664.00 Summary 0045090321 Aug-2007 01-Mar-2007 FL 80.00 148,320.00 Summary 0045561172 Sep-2007 01-Apr-2007 MO 80.00 92,800.00

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period (continued) Group Loan Current Paid To Months Current Approximate Number Actual Date Delinquent Loan Rate Delinquent Balance Interest NoSummary ~~Bankruptcy~~0040109092 ~~Loans~~324,000.00 ~~this~~01-Apr-2007 ~~Period~~4 8.000% 12,555.00 Summary 0040120461 230,663.98 01-Jul-2007 1 7.250% 4,036.62 Summary 0045090321 148,320.00 01-Jul-2007 1 7.625% 2,734.65 Summary 0045561172 92,800.00 01-May-2007 3 7.125% 2,658.35

Prepayment Detail - Prepayments during Current Period Summary Loans Paid In Full Repurchased Loans Original Current Original Current Principal Scheduled Principal Scheduled Group Count Balance Balance Count Balance Balance Total 1715 4,~~221~~010,~~770~~100.00 4,~~220~~007,~~172~~689.87 17 ~~1 168~~4,~~808~~876,300.00 ~~168~~4,~~808~~876,300.00

Prepayment Detail - Prepayments during Current Period (continued) Summary Substitution Loans Liquidated Loans Curtailments Original Current Original Current Principal Scheduled Principal Scheduled Curtailment Group Count Balance Balance Count Balance Balance Amount Total 0 0.00 0.00 0 0.00 0.00 16200,~~885~~894.2252

Prepayment Loan Detail - Prepayments during Current Period First Original Loan LTV at Payment Principal Prepayment Group Number State Origination Date Balance Amount Summary ~~0033326661~~0033407016 CA 80.00 01-~~Nov~~Dec-2006 ~~180~~356,000.00 ~~179~~356,~~999~~000.9800 Summary ~~0033562448~~0033517228 GANC 80.00 01-Jan-2007 ~~168~~192,~~808~~000.00 ~~168~~191,~~808~~992.0050 Summary ~~0033641457~~0033720848 MDIL 7780.0900 01-Feb-2007 ~~169~~117,600.00 ~~169~~117,~~599~~600.4700 Summary ~~0033783853~~0033754011 NJFL 80.00 01-Mar-2007 ~~384~~229,~~000~~600.00 ~~384~~229,~~000~~600.00 Summary ~~0033784422~~0033784521 ALCO 8075.00 01-Mar-2007 ~~148~~146,~~000~~250.00 ~~147~~146,~~945~~250.6400 Summary ~~0040037772~~0033786302 CO 75.00 01-Mar-2007 146,250.00 146,250.00 Summary 0040032393 AZ 80.00 01-Mar-2007 ~~344~~380,000.00 ~~344~~380,000.00 Summary ~~0040055923~~0040044695 GAMA 7994.98 01-Feb-2007 289,700.00 289,699.99 Summary 0040066193 NH 25.12 01-Mar-2007 ~~204~~103,~~500~~000.00 ~~204~~103,~~500~~000.00 Summary ~~0040116485~~0040081523 COFL 80.00 01-Apr-2007 ~~344~~354,400.00 354,400.00 Summary 0040095341 FL 80.00 01-Apr-2007 340,000.00 ~~344~~340,000.00 Summary ~~0040144974~~0040099194 FLNV 80.00 01-Apr-2007 416,000.00 416,000.00 Summary 0040102154 MD 78.68 01-Apr-2007 417,000.4600 417,000.00 Summary 0040118374 FL 80.00 01-Apr-2007 ~~117~~200,~~750~~000.00 ~~117~~200,~~750~~000.00 Summary ~~0040154478~~0040126153 AZNV 80.00 01-Apr-2007 ~~304~~256,000.00 ~~304~~256,000.00 Summary ~~0040254633~~0040150146 ILOR 80.00 01-Apr-2007 95192,~~920~~800.00 95192,~~920~~800.00 Summary ~~0040284051~~0040150914 CO 80.00 01-~~May~~Apr-2007 ~~504~~164,000.00 ~~504~~164,000.00 Summary ~~0045110483~~0040151680 MAUT 6080.1400 01-~~Mar~~Apr-2007 ~~430~~137,200.00 137,200.00 Summary 0040180762 FL 79.98 01-Apr-2007 103,900.00 103,368.70 Summary 0040182651 OR 80.00 01-Apr-2007 272,000.00 ~~429~~272,~~036~~000.6200 Summary ~~0045280526~~0040185670 MOFL 7580.00 01-Apr-2007 81213,600.00 213,600.00 Summary 0040193807 MD 80.00 01-Apr-2007 148,000.00 81148,000.00 Summary ~~0045294469~~0040201584 OHNJ 80.00 01-~~Mar~~Apr-2007 164,800.00 164,800.00 Summary 0040215337 CO 80.00 01-Apr-2007 128,800.00 128,800.00 Summary 0040274094 FL 72.46 01-May-2007 500,000.00 71500,~~864~~000.7800 Summary ~~0045494481~~0040279036 TXCA 80.00 01-May-2007 528,000.00 528,000.00 Summary 0040281008 WA 33.33 01-May-2007 450,000.00 450,000.00 Summary 0045189222 CA 80.00 01-Apr-2007 ~~256~~404,000.00 ~~256~~404,000.00 Summary ~~0123964025~~0045210036 KSGA 9480.9900 01-~~Oct~~Apr-~~2006~~2007 ~~417~~220,000.00 ~~417~~220,000.00 Summary ~~0123965998~~0045351442 OHFL 75.00 01-Apr-2007 562,500.00 560,138.88 Summary 0045547213 FL 80.00 01-~~Dec~~May-~~2006~~2007 ~~170~~228,000.00 ~~169~~228,~~032~~000.2700 Summary 0045767837 SC 60.00 01-May-2007 525,000.00 525,000.00

Prepayment Loan Detail - Prepayments during Current Period (continued) Current Loan PIF Months Loan Original Group Number Type Delinquent Rate Term Seasoning Summary ~~0033326661~~0033407016 Loan Paid in Full 0 76.~~500~~625% 360 69 Summary ~~0033562448~~0033517228 ~~Repurchase~~Loan 0Paid 7in Full (1) 6.~~250~~875% 360 48 Summary ~~0033641457~~0033720848 Loan Paid in Full 0 68.500% 360 37 Summary ~~0033783853~~0033754011 ~~Loan~~Repurchase ~~Paid~~2 in8.250% ~~Full~~360 06 7Summary 0033784521 Repurchase 4 8.875% 360 26 Summary ~~0033784422~~0033786302 ~~Loan~~Repurchase ~~Paid~~4 in8.875% ~~Full~~360 06 8Summary 0040032393 Repurchase 3 7.~~750~~625% 360 26 Summary ~~0040037772~~0040044695 Loan Paid in Full 0(1) 8.125% 360 27 Summary ~~0040055923~~0040066193 Loan Paid in Full (1) 7.125% 360 6 Summary 0040081523 Repurchase 4 8.000% 360 5 Summary 0040095341 Repurchase 4 9.125% 360 5 Summary 0040099194 Repurchase 3 7.750% 360 5 Summary 0040102154 Repurchase 3 7.375% 360 25 Summary ~~0040116485~~0040118374 Repurchase 4 8.250% 360 5 Summary 0040126153 Repurchase 4 7.250% 360 5 Summary 0040150146 Loan Paid in Full 0 76.500% 360 15 Summary ~~0040144974~~0040150914 Repurchase 3 8.625% 360 5 Summary 0040151680 Repurchase 3 8.375% 360 5 Summary 0040180762 Loan Paid in Full 0 86.~~000~~875% 360 15 Summary ~~0040154478~~0040182651 Loan Paid in Full ~~(1)~~0 6.~~625~~750% 360 15 Summary ~~0040254633~~0040185670 Repurchase 4 8.750% 360 5 Summary 0040193807 Loan Paid in Full ~~(1)~~0 7.250% 360 15 Summary ~~0040284051~~0040201584 Loan Paid in Full ~~(1)~~0 7.~~500~~375% 360 15 Summary ~~0045110483~~0040215337 Loan Paid in Full 0(1) 7.500% 360 25 Summary ~~0045280526~~0040274094 ~~Loan~~Repurchase ~~Paid~~3 in7.875% ~~Full~~360 05 8Summary 0040279036 Repurchase 3 7.~~875~~250% 360 15 Summary ~~0045294469~~0040281008 Loan Paid in Full 0 86.~~375~~750% 360 25 Summary ~~0045494481~~0045189222 Loan Paid in Full (1) 97.~~125~~375% 360 15 Summary ~~0123964025~~0045210036 Repurchase 4 7.375% 360 5 Summary 0045351442 Loan Paid in Full 0 7.~~625~~875% 360 75 Summary ~~0123965998~~0045547213 Repurchase 3 6.875% 360 5 Summary 0045767837 Loan Paid in Full 0 67.~~625~~500% 360 5

Prepayment Penalty Detail - Prepayment Penalty Paid during Current Period Prepayment Prepayment Summary Loan Prior Penalty Penalty Count Balance Amount Waived Total 24 ~~189~~1,~~660~~307,007.1793 633,~~779~~939.2452 0.00

Prepayment Penalty Loan Detail - Prepayment Penalty Paid during Current Period Paid In Prepayment Prepayment Loan Full Prior Penalty Penalty Group Number Date Balance Amount Waived Summary ~~0040144974~~0040066193 0408/2520/2007 ~~117~~103,~~750~~000.00 32,~~768~~935.0050 0.00 Summary ~~0045294469~~0040150146 0408/30/2007 71192,~~910~~800.1700 5,012.80 0.00 Summary 0045351442 08/28/2007 560,538.86 22,071.22 0.00 Summary 0045730785 Active 450,669.07 3,~~011~~920.2400 0.00

Prepayment Rates

Summary SMM CPR PSA Current Month 01.~~813~~761% Current Month 919.~~337~~198% Current Month 21,~~431~~625.~~358~~460% 3 Month Average 01.~~000~~294% 3 Month Average 014.~~000~~405% 3 Month Average 01,464.~~000~~309% 12 Month Average 0.000% 12 Month Average 0.000% 12 Month Average 0.000% CPR: Current vs. 12mo Average* PSA: Current vs. 12mo Average* Month Current 12mo Avg. Month Current 12mo Avg. ~~Jun~~Oct-2006 N/A N/A ~~Jun~~Oct-2006 N/A N/A ~~Jul~~Nov-2006 N/A N/A ~~Jul~~Nov-2006 N/A N/A ~~Aug~~Dec-2006 N/A N/A ~~Aug~~Dec-2006 N/A N/A ~~Sep~~Jan-~~2006~~2007 N/A N/A ~~Sep~~Jan-~~2006~~2007 N/A N/A ~~Oct~~Feb-~~2006~~2007 N/A N/A ~~Oct~~Feb-~~2006~~2007 N/A N/A ~~Nov~~Mar-~~2006~~2007 N/A N/A ~~Nov~~Mar-~~2006~~2007 N/A N/A ~~Dec~~Apr-~~2006~~2007 N/A N/A ~~Dec~~Apr-~~2006~~2007 N/A N/A ~~Jan~~May-2007 ~~N/A~~9.337% N/A ~~Jan~~May-2007 ~~N/A~~2,431.358% N/A ~~Feb~~Jun-2007 ~~N/A~~20.070% N/A ~~Feb~~Jun-2007 ~~N/A~~3,450.573% N/A ~~Mar~~Jul-2007 ~~N/A~~12.253% N/A ~~Mar~~Jul-2007 ~~N/A~~1,566.606% N/A ~~Apr~~Aug-2007 ~~N/A~~11.763% N/A ~~Apr~~Aug-2007 ~~N/A~~1,200.861% N/A ~~May~~Sep-2007 919.~~337~~198% N/A ~~May~~Sep-2007 21,~~431~~625.~~358~~460% N/A *The text reported in the above table is presented *The text reported in the above table is presented graphically on the monthly bond remittance report. The graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at monthly bond remittance report can be viewed online at www.ctslink.com. www.ctslink.com. Calculation Methodology: Single Month Mortality (SMM): (Partial and full prepayments + Repurchases) / (Beginning Scheduled Balance - Scheduled Principal) Conditional PrePayment Rate (CPR): 1 - ((1 - SMM)^12) PSA Standard Prepayment Model: 100 * CPR / (0.2 * MIN(30,WAS)) Weighted Average Seasoning (WAS): sum((Original Term - Remaining Term)*(Current Scheduled Balance/Deal Scheduled Principal Balance))

Repurchases ~~Current~~Due to Breaches Beginning Loan Scheduled Payoff Current Current Number Balance Balance Rate Payment ~~0033562448~~No ~~168,808.00~~Repurchases ~~7.250%~~Due ~~1,019.88~~to Breaches this Period

~~Breaches~~Repurchases ~~Current~~Due to Other Beginning Loan Scheduled Payoff Current Current Number Balance Balance Rate Payment No0033754011 ~~Breaches~~229,600.00 ~~this~~229,600.00 ~~Period~~8.250% 1,578.50 0033784521 146,250.00 146,250.00 8.875% 1,081.64 0033786302 146,250.00 146,250.00 8.875% 1,081.64 0040032393 380,000.00 380,000.00 7.625% 2,414.58 0040081523 354,400.00 354,400.00 8.000% 2,362.67 0040095341 340,000.00 340,000.00 9.125% 2,585.42 0040099194 416,000.00 416,000.00 7.750% 2,686.67 0040102154 417,000.00 417,000.00 7.375% 2,562.81 0040118374 200,000.00 200,000.00 8.250% 1,375.00 0040126153 256,000.00 256,000.00 7.250% 1,546.67 0040150914 164,000.00 164,000.00 8.625% 1,178.75 0040151680 137,200.00 137,200.00 8.375% 957.54 0040185670 213,600.00 213,600.00 8.750% 1,557.50 0040274094 500,000.00 500,000.00 7.875% 3,281.25 0040279036 528,000.00 528,000.00 7.250% 3,190.00 0045210036 220,000.00 220,000.00 7.375% 1,352.08 0045547213 228,000.00 228,000.00 6.875% 1,306.25 Totals 4,876,300.00 4,876,300.00

Interest Rate Stratification Summary Current Number of Outstanding Percentage of Interest Rate Loans Scheduled Balance(%) Range(%) Balance($) < 4.500 1 483,400.00 0.~~090~~095 4.500 4.749 1 519,899.3733 0.~~097~~103 4.750 4.999 4 2,150,~~579~~436.0010 0.~~400~~424 5.000 5.249 2 1,~~115~~114,~~370~~111.9272 0.~~208~~220 5.250 5.499 10 4,~~015~~012,~~806~~207.0009 0.~~748~~792 5.500 5.749 9 3,~~802~~801,~~046~~298.8107 0.~~708~~750 5.750 5.999 2120 8,~~810~~181,~~450~~597.1358 1.~~640~~614 6.000 6.249 3837 1312,~~260~~904,~~063~~537.7825 2.~~469~~546 6.250 6.499 ~~103~~102 33,~~525~~196,~~019~~840.3605 6.~~241~~550 6.500 6.749 ~~255~~248 7977,~~030~~163,~~821~~966.5970 1415.~~713~~224 6.750 6.999 ~~376~~366 ~~118~~113,~~152~~618,~~210~~843.0709 2122.~~997~~417 7.000 7.249 ~~201~~193 6361,~~310~~102,~~510~~648.7395 1112.~~787~~055 7.250 7.499 ~~230~~215 6962,~~573~~943,~~497~~142.0373 12.~~953~~419 7.500 7.749 ~~170~~161 4845,~~418~~548,~~797~~437.5965 98.~~014~~987 7.750 7.999 ~~148~~137 4137,~~749~~635,~~551~~616.0952 7.~~773~~425 8.000 8.249 5954 1413,~~705~~317,~~129~~480.2688 2.~~738~~628 8.250 8.499 3727 85,~~100~~953,~~906~~466.3321 1.~~508~~175 8.500 8.749 4945 109,~~350~~332,~~556~~180.5376 1.~~927~~841 8.750 8.999 4339 119,~~048~~982,~~580~~344.5966 21.~~057~~969 9.000 9.249 2321 43,~~273~~598,~~298~~164.1944 0.~~796~~710 9.250 9.499 1 135,200.00 0.~~025~~027 9.500 9.749 10 ~~308,000~~0.00 0.~~057~~000 9.750 9.999 0 0.00 0.000 10.000 10.249 10 ~~145,014~~0.9000 0.~~027~~000 10.250 10.499 1 153,~~600~~534.0060 0.~~029~~030 10.500 10.749 0 0.00 0.000 10.750 10.999 0 0.00 0.000 >= 11.000 0 0.00 0.000 Total 1,~~784~~694 ~~537~~506,~~138~~849,~~309~~354.2738 100.000

Filing Compare · Structured Adjustable Rate Mortgage Loan Trust Series 2007-4