Structured Asset Securities Corporation   Mortgage Pass-Through Certificates, Series 2005-15
Distribution Date:          08/25/2005
Record Date:                07/29/2005

Distribution Summary

DISTRIBUTION IN DOLLARS

                                                  Prior           Pass-                                                                                    Current
                            Original              Principal       Through       Interest    Principal    Total          Deferred               Realized    Principal
Class                       Balance               Balance         Rate          Distributed Distributed  Distributed    Interest               Loss        Balance
(1)                         (2)                   (3)             (4)           (5)         (6)          (7)=(5+6)      (8)                    (9)         (10)=(3-6+8-9)

A1I                         25,987,000.00         25,987,000.00   5.500000%     119,107.08  0.00         119,107.08     0.00                   0.00        25,987,000.00

A2I                         24,374,000.00         24,374,000.00   3.700000%     75,153.17   137,680.74   212,833.91     0.00                   0.00        24,236,319.26

A4I                         194,998,000.00        194,998,000.00  5.250000%     853,116.25  1,101,479.77 1,954,596.02   0.00                   0.00        193,896,520.23

A5I                         3,302,000.00          3,302,000.00    5.500000%     0.00        0.00         0.00           15,134.17              0.00        3,317,134.17

A6I                         1,254,000.00          1,254,000.00    5.500000%     5,747.50    0.00         5,747.50       0.00                   0.00        1,254,000.00

A1II                        26,414,000.00         26,414,000.00   5.750000%     126,567.08  0.00         126,567.08     0.00                   0.00        26,414,000.00

A2II                        21,232,000.00         21,232,000.00   3.700000%     65,465.33   190,030.70   255,496.03     0.00                   0.00        21,041,969.30

A4II                        75,000,000.00         75,000,000.00   5.750000%     359,375.00  671,265.17   1,030,640.17   0.00                   0.00        74,328,734.83

A5II                        58,012,000.00         58,012,000.00   5.500000%     265,888.33  519,219.14   785,107.47     0.00                   0.00        57,492,780.86

A6II                        75,000,000.00         75,000,000.00   5.500000%     343,750.00  811,004.68   1,154,754.68   0.00                   0.00        74,188,995.32

A7II                        15,613,000.00         15,613,000.00   5.500000%     71,559.58   0.00         71,559.58      0.00                   0.00        15,613,000.00

A8II                        11,487,000.00         11,487,000.00   5.750000%     55,041.87   0.00         55,041.87      0.00                   0.00        11,487,000.00

A9II                        4,946,000.00          4,946,000.00    5.750000%     23,699.58   0.00         23,699.58      0.00                   0.00        4,946,000.00

A1III                       146,408,000.00        146,408,000.00  5.503205%     671,427.65  1,801,739.71 2,473,167.36   0.00                   0.00        144,606,260.29

A2III                       7,140,000.00          7,140,000.00    5.503205%     32,744.07   87,866.93    120,611.00     0.00                   0.00        7,052,133.07

A1IV                        221,262,000.00        221,262,000.00  6.000000%     1,106,310.00892,499.79   1,998,809.79   0.00                   0.00        220,369,500.21

A2IV                        7,670,000.00          7,670,000.00    6.000000%     38,350.00   30,938.31    69,288.31      0.00                   0.00        7,639,061.69

A1V                         73,441,000.00         73,441,000.00   5.750936%     351,962.06  357,536.19   709,498.25     0.00                   0.00        73,083,463.81

A1VI                        145,313,000.00        145,313,000.00  3.710345%     449,301.11  1,565,412.51 2,014,713.62   0.00                   0.00        143,747,587.49

A2VI                        5,011,205.00          5,011,205.00    0.000000%     0.00        53,984.18    53,984.18      0.00                   0.00        4,957,220.82

AP                          5,692,742.00          5,692,742.00    0.000000%     0.00        7,835.09     7,835.09       0.00                   0.00        5,684,906.91

M                           15,718,000.00         15,718,000.00   5.706765%     74,749.11   8,345.16     83,094.27      0.00                   0.00        15,709,654.84

B1                          11,141,000.00         11,141,000.00   5.684761%     52,778.27   6,305.79     59,084.06      0.00                   0.00        11,134,694.21

B2                          8,119,000.00          8,119,000.00    5.713482%     38,656.47   4,223.71     42,880.18      0.00                   0.00        8,114,776.29

B3                          4,712,000.00          4,712,000.00    5.729885%     22,499.35   2,328.13     24,827.48      0.00                   0.00        4,709,671.87

B4                          1,048,000.00          1,048,000.00    5.706664%     4,983.82    556.58       5,540.40       0.00                   0.00        1,047,443.42

B5                          2,880,000.00          2,880,000.00    5.725711%     13,741.71   1,442.13     15,183.84      0.00                   0.00        2,878,557.87

B6                          3,012,000.00          3,012,000.00    5.715819%     14,346.71   1,555.71     15,902.42      0.00                   0.00        3,010,444.29

B7                          1,962,414.00          1,962,414.00    5.720827%     9,355.53    997.94       10,353.47      0.00                   0.00        1,961,416.06

R                           100.00                100.00          5.500000%     7,517.80    100.00       7,617.80       0.00                   0.00        0.00

P                           0.00                  0.00            0.000000%     0.00        0.00         0.00           0.00                   0.00        0.00

Totals                      1,198,149,461.00      1,198,149,461.00              5,253,194.438,254,348.06 13,507,542.49  15,134.17              0.00        1,182,059,828.89

Notional Classes

A3I                         24,374,000.00         24,374,000.00   3.800000%     77,184.33   0.00         77,184.33      0.00                   0.00        24,236,319.26

A3II                        21,232,000.00         21,232,000.00   3.800000%     67,234.67   0.00         67,234.67      0.00                   0.00        21,041,969.30

A3VI                        5,011,205.00          5,011,205.00    3.400000%     14,198.41   0.00         14,198.41      0.00                   0.00        4,957,220.82

AX                          16,041,383.00         16,041,383.00   5.500000%     73,523.00   0.00         73,523.00      0.00                   0.00        15,865,211.61

PAX                         2,956,400.00          2,956,400.00    5.500000%     13,550.17   0.00         13,550.17      0.00                   0.00        2,955,517.56

Totals                      69,614,988.00         69,614,988.00                 245,690.58  0.00         245,690.58     0.00                   0.00        0.00

Component Classes

API                         1,514,788.00          1,514,788.00    0.000000%     0.00        1,863.28     1,863.28       0.00                   0.00        1,512,924.72

APII                        3,276,956.00          3,276,956.00    0.000000%     0.00        5,676.58     5,676.58       0.00                   0.00        3,271,279.42

APIV                        900,998.00            900,998.00      0.000000%     0.00        295.23       295.23         0.00                   0.00        900,702.77

AXI                         7,552,741.00          7,552,741.00    5.500000%     34,616.73   0.00         34,616.73      0.00                   0.00        7,490,380.38

AXII                        5,213,523.00          5,213,523.00    5.500000%     23,895.31   0.00         23,895.31      0.00                   0.00        5,120,494.07

AXIV                        3,275,119.00          3,275,119.00    5.500000%     15,010.96   0.00         15,010.96      0.00                   0.00        3,254,337.16

PAXI                        291,512.00            291,512.00      5.500000%     1,336.10    0.00         1,336.10       0.00                   0.00        291,231.91

PAXII                       1,039,007.00          1,039,007.00    5.500000%     4,762.12    0.00         4,762.12       0.00                   0.00        1,038,807.98

PAXIV                       1,625,881.00          1,625,881.00    5.500000%     7,451.95    0.00         7,451.95       0.00                   0.00        1,625,477.66

MI                          3,954,000.00          3,954,000.00    5.500000%     18,122.50   3,402.22     21,524.72      0.00                   0.00        3,950,597.78

B1I                         3,690,000.00          3,690,000.00    5.500000%     16,912.50   3,175.06     20,087.56      0.00                   0.00        3,686,824.94

B2I                         1,845,000.00          1,845,000.00    5.500000%     8,456.25    1,587.53     10,043.78      0.00                   0.00        1,843,412.47

B3I                         791,000.00            791,000.00      5.500000%     3,625.42    680.62       4,306.04       0.00                   0.00        790,319.38

B4I                         264,000.00            264,000.00      5.500000%     1,210.00    227.16       1,437.16       0.00                   0.00        263,772.84

B5I                         527,000.00            527,000.00      5.500000%     2,415.42    453.46       2,868.88       0.00                   0.00        526,546.54

B6I                         659,000.00            659,000.00      5.500000%     3,020.42    567.04       3,587.46       0.00                   0.00        658,432.96

B7I                         393,789.00            393,789.00      5.500000%     1,804.87    338.84       2,143.71       0.00                   0.00        393,450.16

M2_5                        11,764,000.00         11,764,000.00   5.776261%     56,626.61   4,942.94     61,569.55      0.00                   0.00        11,759,057.06

B12_5                       7,451,000.00          7,451,000.00    5.776261%     35,865.77   3,130.73     38,996.50      0.00                   0.00        7,447,869.27

B22_5                       6,274,000.00          6,274,000.00    5.776261%     30,200.22   2,636.18     32,836.40      0.00                   0.00        6,271,363.82

B32_5                       3,921,000.00          3,921,000.00    5.776261%     18,873.93   1,647.51     20,521.44      0.00                   0.00        3,919,352.49

B42_5                       784,000.00            784,000.00      5.776261%     3,773.82    329.42       4,103.24       0.00                   0.00        783,670.58

B52_5                       2,353,000.00          2,353,000.00    5.776261%     11,326.29   988.67       12,314.96      0.00                   0.00        2,352,011.33

B62_5                       2,353,000.00          2,353,000.00    5.776261%     11,326.29   988.67       12,314.96      0.00                   0.00        2,352,011.33

B72_5                       1,568,625.00          1,568,625.00    5.776261%     7,550.66    659.10       8,209.76       0.00                   0.00        1,567,965.90

Distribution Summary (Factors)

PER $1,000 OF ORIGINAL BALANCE

                                                  Prior                                                                                        Current
                                                  Principal       Interest      Principal   Total        Deferred       Realized               Principal
                                                                  Distributed
Class                       CUSIP                 Balance         (5/2 x 1000)  Distributed Distributed  Interest       Loss                   Balance
                                                  (3/2 x 1000)                  (6/2 x 1000)(7/2 x 1000) (8/2 x 1000)   (9/2 x 1000)           (10/2 x
                                                                                                                                               1000)

A1I                         86359DND5             1,000.000000    4.583333      0.000000    4.583333     0.000000       0.000000               1,000.000000

A2I                         86359DNE3             1,000.000000    3.083333      5.648672    8.732006     0.000000       0.000000               994.351328

A4I                         86359DNG8             1,000.000000    4.375000      5.648672    10.023672    0.000000       0.000000               994.351328

A5I                         86359DNH6             1,000.000000    0.000000      0.000000    0.000000     4.583334       0.000000               1,004.583334

A6I                         86359DNJ2             1,000.000000    4.583333      0.000000    4.583333     0.000000       0.000000               1,000.000000

A1II                        86359DNK9             1,000.000000    4.791667      0.000000    4.791667     0.000000       0.000000               1,000.000000

A2II                        86359DNL7             1,000.000000    3.083333      8.950203    12.033536    0.000000       0.000000               991.049797

A4II                        86359DNN3             1,000.000000    4.791667      8.950202    13.741869    0.000000       0.000000               991.049798

A5II                        86359DNP8             1,000.000000    4.583333      8.950202    13.533536    0.000000       0.000000               991.049798

A6II                        86359DNQ6             1,000.000000    4.583333      10.813396   15.396729    0.000000       0.000000               989.186604

A7II                        86359DNR4             1,000.000000    4.583333      0.000000    4.583333     0.000000       0.000000               1,000.000000

A8II                        86359DNS2             1,000.000000    4.791666      0.000000    4.791666     0.000000       0.000000               1,000.000000

A9II                        86359DNT0             1,000.000000    4.791666      0.000000    4.791666     0.000000       0.000000               1,000.000000

A1III                       86359DNU7             1,000.000000    4.586004      12.306293   16.892297    0.000000       0.000000               987.693707

A2III                       86359DNV5             1,000.000000    4.586004      12.306293   16.892297    0.000000       0.000000               987.693707

A1IV                        86359DNW3             1,000.000000    5.000000      4.033679    9.033679     0.000000       0.000000               995.966321

A2IV                        86359DNX1             1,000.000000    5.000000      4.033678    9.033678     0.000000       0.000000               995.966322

A1V                         86359DNY9             1,000.000000    4.792446      4.868346    9.660792     0.000000       0.000000               995.131654

A1VI                        86359DNZ6             1,000.000000    3.091954      10.772694   13.864648    0.000000       0.000000               989.227306

A2VI                        86359DPA9             1,000.000000    0.000000      10.772694   10.772694    0.000000       0.000000               989.227306

AP                          86359DPC5             1,000.000000    0.000000      1.376330    1.376330     0.000000       0.000000               998.623670

M                           86359DPF8             1,000.000000    4.755637      0.530930    5.286568     0.000000       0.000000               999.469070

B1                          86359DPG6             1,000.000000    4.737301      0.565999    5.303300     0.000000       0.000000               999.434001

B2                          86359DPH4             1,000.000000    4.761235      0.520225    5.281461     0.000000       0.000000               999.479775

B3                          86359DPJ0             1,000.000000    4.774904      0.494085    5.268990     0.000000       0.000000               999.505915

B4                          86359DPK7             1,000.000000    4.755553      0.531088    5.286641     0.000000       0.000000               999.468912

B5                          86359DLZ8             1,000.000000    4.771427      0.500740    5.272167     0.000000       0.000000               999.499260

B6                          86359DMA2             1,000.000000    4.763184      0.516504    5.279688     0.000000       0.000000               999.483496

B7                          86359DMB0             1,000.000000    4.767358      0.508527    5.275885     0.000000       0.000000               999.491473

R                           86359DPL5             1,000.000000    75,178.000000 1,000.00000076,178.0000000.000000       0.000000               0.000000

P                           105388ZZ1             0.000000        0.000000      0.000000    0.000000     0.000000       0.000000               0.000000

A3I                         86359DNF0             1,000.000000    3.166667      0.000000    3.166667     0.000000       0.000000               994.351328

A3II                        86359DNM5             1,000.000000    3.166667      0.000000    3.166667     0.000000       0.000000               991.049797

A3VI                        86359DPB7             1,000.000000    2.833333      0.000000    2.833333     0.000000       0.000000               989.227306

AX                          86359DPD3             1,000.000000    4.583333      0.000000    4.583333     0.000000       0.000000               989.017693

PAX                         86359DPE1             1,000.000000    4.583334      0.000000    4.583334     0.000000       0.000000               999.701515

Interest Distribution Detail

DISTRIBUTION IN DOLLARS

                            Prior                 Pass-           Optimal       Prior       Non-Recov                                                      Current
                            Principal             Through         Accrued       Unpaid      Interest     Interest       Deferred               Interest    Unpaid
                                                                                                                                               Distributed
Class                       Balance               Rate            Interest      Interest    Shortfall    Due            Interest               (9)         Interest
(1)                         (2)                   (3)             (4)           (5)         (6)          (7)=(4)+(5)-(6)(8)                                (10)=(7)-(8)-(9)

A1I                         25,987,000.00         5.500000%       119,107.08    0.00        0.00         119,107.08     0.00                   119,107.08  0.00

A2I                         24,374,000.00         3.700000%       75,153.17     0.00        0.00         75,153.17      0.00                   75,153.17   0.00

A4I                         194,998,000.00        5.250000%       853,116.25    0.00        0.00         853,116.25     0.00                   853,116.25  0.00

A5I                         3,302,000.00          5.500000%       15,134.17     0.00        0.00         15,134.17      15,134.17              0.00        0.00

A6I                         1,254,000.00          5.500000%       5,747.50      0.00        0.00         5,747.50       0.00                   5,747.50    0.00

A1II                        26,414,000.00         5.750000%       126,567.08    0.00        0.00         126,567.08     0.00                   126,567.08  0.00

A2II                        21,232,000.00         3.700000%       65,465.33     0.00        0.00         65,465.33      0.00                   65,465.33   0.00

A4II                        75,000,000.00         5.750000%       359,375.00    0.00        0.00         359,375.00     0.00                   359,375.00  0.00

A5II                        58,012,000.00         5.500000%       265,888.33    0.00        0.00         265,888.33     0.00                   265,888.33  0.00

A6II                        75,000,000.00         5.500000%       343,750.00    0.00        0.00         343,750.00     0.00                   343,750.00  0.00

A7II                        15,613,000.00         5.500000%       71,559.58     0.00        0.00         71,559.58      0.00                   71,559.58   0.00

A8II                        11,487,000.00         5.750000%       55,041.87     0.00        0.00         55,041.87      0.00                   55,041.87   0.00

A9II                        4,946,000.00          5.750000%       23,699.58     0.00        0.00         23,699.58      0.00                   23,699.58   0.00

A1III                       146,408,000.00        5.503205%       671,427.65    0.00        0.00         671,427.65     0.00                   671,427.65  0.00

A2III                       7,140,000.00          5.503205%       32,744.07     0.00        0.00         32,744.07      0.00                   32,744.07   0.00

A1IV                        221,262,000.00        6.000000%       1,106,310.00  0.00        0.00         1,106,310.00   0.00                   1,106,310.000.00

A2IV                        7,670,000.00          6.000000%       38,350.00     0.00        0.00         38,350.00      0.00                   38,350.00   0.00

A1V                         73,441,000.00         5.750936%       351,962.06    0.00        0.00         351,962.06     0.00                   351,962.06  0.00

A1VI                        145,313,000.00        3.710345%       449,301.11    0.00        0.00         449,301.11     0.00                   449,301.11  0.00

A2VI                        5,011,205.00          0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

AP                          5,692,742.00          0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

M                           15,718,000.00         5.706765%       74,749.11     0.00        0.00         74,749.11      0.00                   74,749.11   0.00

B1                          11,141,000.00         5.684761%       52,778.27     0.00        0.00         52,778.27      0.00                   52,778.27   0.00

B2                          8,119,000.00          5.713482%       38,656.47     0.00        0.00         38,656.47      0.00                   38,656.47   0.00

B3                          4,712,000.00          5.729885%       22,499.35     0.00        0.00         22,499.35      0.00                   22,499.35   0.00

B4                          1,048,000.00          5.706664%       4,983.82      0.00        0.00         4,983.82       0.00                   4,983.82    0.00

B5                          2,880,000.00          5.725711%       13,741.71     0.00        0.00         13,741.71      0.00                   13,741.71   0.00

B6                          3,012,000.00          5.715819%       14,346.71     0.00        0.00         14,346.71      0.00                   14,346.71   0.00

B7                          1,962,414.00          5.720827%       9,355.53      0.00        0.00         9,355.53       0.00                   9,355.53    0.00

R                           100.00                5.500000%       7,517.80      0.00        0.00         7,517.80       0.00                   7,517.80    0.00

P                           0.00                  0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

  Totals                    1,198,149,461.00                      5,268,328.60  0.00        0.00         5,268,328.60   15,134.17              5,253,194.430.00

Notional Classes

A3I                         24,374,000.00         3.800000%       77,184.33     0.00        0.00         77,184.33      0.00                   77,184.33   0.00

A3II                        21,232,000.00         3.800000%       67,234.67     0.00        0.00         67,234.67      0.00                   67,234.67   0.00

A3VI                        5,011,205.00          3.400000%       14,198.41     0.00        0.00         14,198.41      0.00                   14,198.41   0.00

AX                          16,041,383.00         5.500000%       73,523.01     0.00        0.00         73,523.01      0.00                   73,523.00   0.01

PAX                         2,956,400.00          5.500000%       13,550.17     0.00        0.00         13,550.17      0.00                   13,550.17   0.00

  Totals                    69,614,988.00                         245,690.59    0.00        0.00         245,690.59     0.00                   245,690.58  0.01

Component Classes

API                         1,514,788.00          0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

APII                        3,276,956.00          0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

APIV                        900,998.00            0.000000%       0.00          0.00        0.00         0.00           0.00                   0.00        0.00

AXI                         7,552,741.00          5.500000%       34,616.73     0.00        0.00         34,616.73      0.00                   34,616.73   0.00

AXII                        5,213,523.00          5.500000%       23,895.31     0.00        0.00         23,895.31      0.00                   23,895.31   0.00

AXIV                        3,275,119.00          5.500000%       15,010.96     0.00        0.00         15,010.96      0.00                   15,010.96   0.00

PAXI                        291,512.00            5.500000%       1,336.10      0.00        0.00         1,336.10       0.00                   1,336.10    0.00

PAXII                       1,039,007.00          5.500000%       4,762.12      0.00        0.00         4,762.12       0.00                   4,762.12    0.00

PAXIV                       1,625,881.00          5.500000%       7,451.95      0.00        0.00         7,451.95       0.00                   7,451.95    0.00

MI                          3,954,000.00          5.500000%       18,122.50     0.00        0.00         18,122.50      0.00                   18,122.50   0.00

B1I                         3,690,000.00          5.500000%       16,912.50     0.00        0.00         16,912.50      0.00                   16,912.50   0.00

B2I                         1,845,000.00          5.500000%       8,456.25      0.00        0.00         8,456.25       0.00                   8,456.25    0.00

B3I                         791,000.00            5.500000%       3,625.42      0.00        0.00         3,625.42       0.00                   3,625.42    0.00

B4I                         264,000.00            5.500000%       1,210.00      0.00        0.00         1,210.00       0.00                   1,210.00    0.00

B5I                         527,000.00            5.500000%       2,415.42      0.00        0.00         2,415.42       0.00                   2,415.42    0.00

B6I                         659,000.00            5.500000%       3,020.42      0.00        0.00         3,020.42       0.00                   3,020.42    0.00

B7I                         393,789.00            5.500000%       1,804.87      0.00        0.00         1,804.87       0.00                   1,804.87    0.00

M2_5                        11,764,000.00         5.776261%       56,626.61     0.00        0.00         56,626.61      0.00                   56,626.61   0.00

B12_5                       7,451,000.00          5.776261%       35,865.77     0.00        0.00         35,865.77      0.00                   35,865.77   0.00

B22_5                       6,274,000.00          5.776261%       30,200.22     0.00        0.00         30,200.22      0.00                   30,200.22   0.00

B32_5                       3,921,000.00          5.776261%       18,873.93     0.00        0.00         18,873.93      0.00                   18,873.93   0.00

B42_5                       784,000.00            5.776261%       3,773.82      0.00        0.00         3,773.82       0.00                   3,773.82    0.00

B52_5                       2,353,000.00          5.776261%       11,326.29     0.00        0.00         11,326.29      0.00                   11,326.29   0.00

B62_5                       2,353,000.00          5.776261%       11,326.29     0.00        0.00         11,326.29      0.00                   11,326.29   0.00

B72_5                       1,568,625.00          5.776261%       7,550.66      0.00        0.00         7,550.66       0.00                   7,550.66    0.00

Principal Distribution
Detail

DISTRIBUTION IN DOLLARS

                                                  Prior                                     Current      Current        Current                Cumulative
                            Original              Principal       Principal     Accreted    Realized     Principal      Principal              Realized
Class                       Balance               Balance         Distribution  Principal   Losses       Recoveries     Balance                Losses
(1)                         (2)                   (3)             (4)           (5)         (6)          (7)            (8)=(3)-(4)+(5)-(6)+(7)(9)

A1I                         25,987,000.00         25,987,000.00   0.00          0.00        0.00         0.00           25,987,000.00          0.00

A2I                         24,374,000.00         24,374,000.00   137,680.74    0.00        0.00         0.00           24,236,319.26          0.00

A4I                         194,998,000.00        194,998,000.00  1,101,479.77  0.00        0.00         0.00           193,896,520.23         0.00

A5I                         3,302,000.00          3,302,000.00    0.00          15,134.17   0.00         0.00           3,317,134.17           0.00

A6I                         1,254,000.00          1,254,000.00    0.00          0.00        0.00         0.00           1,254,000.00           0.00

A1II                        26,414,000.00         26,414,000.00   0.00          0.00        0.00         0.00           26,414,000.00          0.00

A2II                        21,232,000.00         21,232,000.00   190,030.70    0.00        0.00         0.00           21,041,969.30          0.00

A4II                        75,000,000.00         75,000,000.00   671,265.17    0.00        0.00         0.00           74,328,734.83          0.00

A5II                        58,012,000.00         58,012,000.00   519,219.14    0.00        0.00         0.00           57,492,780.86          0.00

A6II                        75,000,000.00         75,000,000.00   811,004.68    0.00        0.00         0.00           74,188,995.32          0.00

A7II                        15,613,000.00         15,613,000.00   0.00          0.00        0.00         0.00           15,613,000.00          0.00

A8II                        11,487,000.00         11,487,000.00   0.00          0.00        0.00         0.00           11,487,000.00          0.00

A9II                        4,946,000.00          4,946,000.00    0.00          0.00        0.00         0.00           4,946,000.00           0.00

A1III                       146,408,000.00        146,408,000.00  1,801,739.71  0.00        0.00         0.00           144,606,260.29         0.00

A2III                       7,140,000.00          7,140,000.00    87,866.93     0.00        0.00         0.00           7,052,133.07           0.00

A1IV                        221,262,000.00        221,262,000.00  892,499.79    0.00        0.00         0.00           220,369,500.21         0.00

A2IV                        7,670,000.00          7,670,000.00    30,938.31     0.00        0.00         0.00           7,639,061.69           0.00

A1V                         73,441,000.00         73,441,000.00   357,536.19    0.00        0.00         0.00           73,083,463.81          0.00

A1VI                        145,313,000.00        145,313,000.00  1,565,412.51  0.00        0.00         0.00           143,747,587.49         0.00

A2VI                        5,011,205.00          5,011,205.00    53,984.18     0.00        0.00         0.00           4,957,220.82           0.00

AP                          5,692,742.00          5,692,742.00    7,835.09      0.00        0.00         0.00           5,684,906.91           0.00

M                           15,718,000.00         15,718,000.00   8,345.16      0.00        0.00         0.00           15,709,654.84          0.00

B1                          11,141,000.00         11,141,000.00   6,305.79      0.00        0.00         0.00           11,134,694.21          0.00

B2                          8,119,000.00          8,119,000.00    4,223.71      0.00        0.00         0.00           8,114,776.29           0.00

B3                          4,712,000.00          4,712,000.00    2,328.13      0.00        0.00         0.00           4,709,671.87           0.00

B4                          1,048,000.00          1,048,000.00    556.58        0.00        0.00         0.00           1,047,443.42           0.00

B5                          2,880,000.00          2,880,000.00    1,442.13      0.00        0.00         0.00           2,878,557.87           0.00

B6                          3,012,000.00          3,012,000.00    1,555.71      0.00        0.00         0.00           3,010,444.29           0.00

B7                          1,962,414.00          1,962,414.00    997.94        0.00        0.00         0.00           1,961,416.06           0.00

R                           100.00                100.00          100.00        0.00        0.00         0.00           0.00                   0.00

P                           0.00                  0.00            0.00          0.00        0.00         0.00           0.00                   0.00

  Totals                    1,193,174,947.00      1,198,149,461.008,254,348.06  5,221,974.398,251,694.41 0.00                ##############    0.00

Component Classes

API                         1,514,788.00          1,514,788.00    1,863.28      0.00        0.00         0.00           1,512,924.72           0.00

APII                        3,276,956.00          3,276,956.00    5,676.58      0.00        0.00         0.00           3,271,279.42           0.00

APIV                        900,998.00            900,998.00      295.23        0.00        0.00         0.00           900,702.77             0.00

MI                          3,954,000.00          3,954,000.00    3,402.22      0.00        0.00         0.00           3,950,597.78           0.00

B1I                         3,690,000.00          3,690,000.00    3,175.06      0.00        0.00         0.00           3,686,824.94           0.00

B2I                         1,845,000.00          1,845,000.00    1,587.53      0.00        0.00         0.00           1,843,412.47           0.00

B3I                         791,000.00            791,000.00      680.62        0.00        0.00         0.00           790,319.38             0.00

B4I                         264,000.00            264,000.00      227.16        0.00        0.00         0.00           263,772.84             0.00

B5I                         527,000.00            527,000.00      453.46        0.00        0.00         0.00           526,546.54             0.00

B6I                         659,000.00            659,000.00      567.04        0.00        0.00         0.00           658,432.96             0.00

B7I                         393,789.00            393,789.00      338.84        0.00        0.00         0.00           393,450.16             0.00

M2_5                        11,764,000.00         11,764,000.00   4,942.94      0.00        0.00         0.00           11,759,057.06          0.00

B12_5                       7,451,000.00          7,451,000.00    3,130.73      0.00        0.00         0.00           7,447,869.27           0.00

B22_5                       6,274,000.00          6,274,000.00    2,636.18      0.00        0.00         0.00           6,271,363.82           0.00

B32_5                       3,921,000.00          3,921,000.00    1,647.51      0.00        0.00         0.00           3,919,352.49           0.00

B42_5                       784,000.00            784,000.00      329.42        0.00        0.00         0.00           783,670.58             0.00

B52_5                       2,353,000.00          2,353,000.00    988.67        0.00        0.00         0.00           2,352,011.33           0.00

B62_5                       2,353,000.00          2,353,000.00    988.67        0.00        0.00         0.00           2,352,011.33           0.00

B72_5                       1,568,625.00          1,568,625.00    659.10        0.00        0.00         0.00           1,567,965.90           0.00

Collateral Summary - Group 1

ASSET CHARACTERISTICS

                            Cut-Off               Prior           Current

Aggregate Stated Principal
Balance                     263,553,677.31        263,553,677.31  262,317,255.77

Loan Count                  478                   478             476

Weighted Average Coupon Rate
(WAC)                       5.873438%             5.873438%       N/A

Net Weighted Average Coupon
Rate (Net WAC)              5.632087%             5.632087%       N/A

Weighted Average Maturity
(WAM in months)             0                     0               354

AVAILABLE PRINCIPAL         AVAILABLE INTEREST

PO Principal                Total Principal
Scheduled Interest          1,289,971.86
120.44                      38,328.00
Less:                       Master Servicing Fees 0.00
Sub Servicing Fees          53,007.34
Trustee Fees                0.00
Insurance Fees              0.00
Uncompensated PPIS          0.00
Relief Act Shortfall        0.00
Other Interest Reductions   0.00
0.00                        0.00
TOTAL AVAILABLE INTEREST    1,236,964.52

Collateral Summary - Group 2

ASSET CHARACTERISTICS

                            Cut-Off               Prior           Current

Aggregate Stated Principal
Balance                     305,171,801.45        305,171,801.45  302,968,979.44

Loan Count                  560                   560             557

Weighted Average Coupon Rate
(WAC)                       6.045176%             6.045176%       N/A

Net Weighted Average Coupon
Rate (Net WAC)              5.801267%             5.801267%       N/A

Weighted Average Maturity
(WAM in months)             0                     0               355

AVAILABLE PRINCIPAL         AVAILABLE INTEREST

PO Principal                Total Principal
Scheduled Interest          1,537,347.58
5,366.71                    138,446.65
Less:                       Master Servicing Fees 0.00
Sub Servicing Fees          62,028.46
Trustee Fees                0.00
Insurance Fees              82.34
Uncompensated PPIS          0.00
Relief Act Shortfall        0.00
Other Interest Reductions   0.00
0.00                        0.00
TOTAL AVAILABLE INTEREST    1,475,236.78

Collateral Summary - Group 3

ASSET CHARACTERISTICS

                            Cut-Off               Prior           Current

Aggregate Stated Principal
Balance                     161,035,164.06        161,035,164.06  159,143,037.25

Loan Count                  362                   362             357

Weighted Average Coupon Rate
(WAC)                       5.749604%             5.749604%       N/A

Net Weighted Average Coupon
Rate (Net WAC)              5.503205%             5.503205%       N/A

Weighted Average Maturity
(WAM in months)             0                     0               355

AVAILABLE PRINCIPAL         AVAILABLE INTEREST

Scheduled Interest          771,573.73
Curtailments                9,129.28
Less:                       Master Servicing Fees 0.00
Sub Servicing Fees          33,065.87
Trustee Fees                0.00
Insurance Fees              0.00
Uncompensated PPIS          0.00
Relief Act Shortfall        0.00
Other Interest Reductions   0.00
Current Realized Losses     0.00
TOTAL AVAILABLE INTEREST    738,507.86

Collateral Summary - Group 4

ASSET CHARACTERISTICS

                            Cut-Off               Prior           Current

Aggregate Stated Principal
Balance                     241,041,573.90        241,041,573.90  240,112,844.03

Loan Count                  944                   944             942

Weighted Average Coupon Rate
(WAC)                       6.331307%             6.331307%       N/A

Net Weighted Average Coupon
Rate (Net WAC)              6.089402%             6.089402%       N/A

Weighted Average Maturity
(WAM in months)             0                     0               356

AVAILABLE PRINCIPAL         AVAILABLE INTEREST

PO Principal                Total Principal
Scheduled Interest          1,271,757.02
43.70                       14,420.04
Less:                       Master Servicing Fees 0.00
Sub Servicing Fees          48,591.29
Trustee Fees                0.00
Insurance Fees              0.00
Uncompensated PPIS          0.00
Relief Act Shortfall        0.00
Other Interest Reductions   0.00
0.00                        0.00
TOTAL AVAILABLE INTEREST    1,223,165.73

Collateral Summary - Group 5

ASSET CHARACTERISTICS

                            Cut-Off               Prior           Current

Aggregate Stated Principal
Balance                     77,023,041.17         77,023,041.17   76,663,324.22

Loan Count                  529                   529             527

Weighted Average Coupon Rate
(WAC)                       6.003822%             6.003822%       N/A

Net Weighted Average Coupon
Rate (Net WAC)              5.753822%             5.753822%       N/A

Weighted Average Maturity
(WAM in months)             0                     0               358

AVAILABLE PRINCIPAL         AVAILABLE INTEREST

Scheduled Interest          385,360.68
Net Liquidation Proceeds    0.00
Less:                       Master Servicing Fees 0.00
Sub Servicing Fees          16,046.49
Trustee Fees                0.00
Insurance Fees              185.27
Uncompensated PPIS          0.00
Relief Act Shortfall        0.00
Other Interest Reductions   0.00
Current Realized Losses     0.00
TOTAL AVAILABLE INTEREST    369,128.92

Delinquency Information

 GROUP 1

                            1 Month               2 Months        3+ Months     Totals

Delinquency

Scheduled Principal Balance 0.00                  0.00            0.00          0.00
Percentage of Total Pool
Balance                     0.0000%               0.0000%         0.0000%       0.0000%
Number of Loans             0                     0               0             0

Percentage of Total Loans   0.0000%               0.0000%         0.0000%       0.0000%
Bankruptcy

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Foreclosure

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

REO

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Total

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Principal and Interest
Advances                    1,004,270.15

Delinquency Information

 GROUP 2

                            1 Month               2 Months        3+ Months     Totals

Delinquency

Scheduled Principal Balance 0.00                  0.00            0.00          0.00
Percentage of Total Pool
Balance                     0.0000%               0.0000%         0.0000%       0.0000%
Number of Loans             0                     0               0             0

Percentage of Total Loans   0.0000%               0.0000%         0.0000%       0.0000%
Bankruptcy

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Foreclosure

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

REO

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Total

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Principal and Interest
Advances                    1,244,669.50

Delinquency Information

 GROUP 3

                            1 Month               2 Months        3+ Months     Totals

Delinquency

Scheduled Principal Balance 361,142.25            0.00            0.00          361,142.25
Percentage of Total Pool
Balance                     0.2269%               0.0000%         0.0000%       0.2269%
Number of Loans             1                     0               0             1

Percentage of Total Loans   0.2801%               0.0000%         0.0000%       0.2801%
Bankruptcy

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Foreclosure

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

REO

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Total

Scheduled Principal Balance                       361,142.25      0.00          0.00        361,142.25
Percentage of Total Pool Balance                  0.2269%         0.0000%       0.0000%     0.2269%

Number of Loans                                   1               0             0           1
Percentage of Total Loans                         0.2801%         0.0000%       0.0000%     0.2801%

Principal and Interest
Advances                    640,023.43

Delinquency Information

 GROUP 4

                            1 Month               2 Months        3+ Months     Totals

Delinquency

Scheduled Principal Balance 542,964.73            0.00            0.00          542,964.73
Percentage of Total Pool
Balance                     0.2261%               0.0000%         0.0000%       0.2261%
Number of Loans             1                     0               0             1

Percentage of Total Loans   0.1062%               0.0000%         0.0000%       0.1062%
Bankruptcy

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Foreclosure

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

REO

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Total

Scheduled Principal Balance                       542,964.73      0.00          0.00        542,964.73
Percentage of Total Pool Balance                  0.2261%         0.0000%       0.0000%     0.2261%

Number of Loans                                   1               0             0           1
Percentage of Total Loans                         0.1062%         0.0000%       0.0000%     0.1062%

Principal and Interest
Advances                    1,026,283.65

Delinquency Information

 GROUP 5

                            1 Month               2 Months        3+ Months     Totals

Delinquency

Scheduled Principal Balance 0.00                  0.00            0.00          0.00
Percentage of Total Pool
Balance                     0.0000%               0.0000%         0.0000%       0.0000%
Number of Loans             0                     0               0             0

Percentage of Total Loans   0.0000%               0.0000%         0.0000%       0.0000%
Bankruptcy

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Foreclosure

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

REO

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Total

Scheduled Principal Balance                       0.00            0.00          0.00        0.00
Percentage of Total Pool Balance                  0.0000%         0.0000%       0.0000%     0.0000%

Number of Loans                                   0               0             0           0
Percentage of Total Loans                         0.0000%         0.0000%       0.0000%     0.0000%

Principal and Interest
Advances                    258,030.05

Other Information

Underlying SASCO 2005-10 Class 5-A1

          Interest
Distribution Amount paid to 471,015.84
Class 5-A1
          Principal
Distribution Amount paid to 1,619,396.69
Class 5-A1
          Class 5-A1 Current
Certificate Balance         148,704,808.85

          Class 5-A1 Current
Realized Loss Amount        0.00
          Class 5-A1
Additional Realized Losses
(Gains) from Prior          0.00
Liquidations

          Current Bankruptcy
Loss                        0.00
          Cumulative
Bankruptcy Loss             0.00
          Remaining
Bankruptcy Loss Limit       314,314.00

          Current Fraud Loss0.00
          Cumulative Fraud
Loss                        0.00
          Remaining Fraud
Loss Limit                  34,082,796.00

          Current Special
Hazard Loss Limit Group 1   0.00
          Cumulative Special
Hazard Loss Limit Group 1   0.00
          Remaining Special
Hazard Loss Limit Group 1   3,936,262.00

          Current Special
Hazard Loss Limit Groups 2 -0.00
5
          Cumulative Special
Hazard Loss Limit Groups 2 -0.00
5
          Remaining Special
Hazard Loss Limit Groups 2 -7,842,716.00
5

          Group 1 Additional
Realized Losses (Gains) from0.00
Prior Liquidations
          Group 2 Additional
Realized Losses (Gains) from0.00
Prior Liquidations
          Group 3 Additional
Realized Losses (Gains) from0.00
Prior Liquidations
          Group 4 Additional
Realized Losses (Gains) from0.00
Prior Liquidations
          Group 5 Additional
Realized Losses (Gains) from0.00
Prior Liquidations

          Current Libor     3.400000%

CONTACT INFORMATION         CONTENTS

Distribution Summary        2
Depositor                   Structured Asset
                            Securities Corporation
Distribution Summary
(Factors)                   2

New York, NY  10019
Interest Distribution       2
Underwriter                 Lehman Brothers
745 Seventh Avenue, 7th
Floor
Principal Distribution      2
New York, NY  10019

Collateral Summary          -2
2530 South Parker Road, Suite 601

Delinquency Information     2

Trustee                     Citibank, N.A.
Other Information           2

New York, NY  10013

Deal Contact:               Karen Schluter        Citibank, N.A.
karen.schluter@citigroup.com                      Agency and Trust
                                                  388 Greenwich
Tel: (212) 816-5827                               Street, 14th
                                                  Floor
Fax: (212) 816-5527                               New York, NY
                                                  10013

Page 1 of 1                  Reports Available at (c) Copyright
                            www.sf.citidirect.com 2005 Citigroup

Structured Asset Securities Corp. 2005-15 8-K