Structured Asset Securities Corporation  Mortgage Pass-Through Certificates, Series
2004-4XS
Distribution Date:                 04/26/2004
Record Date:                       03/31/2004

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)

A1A                    88,372,000.00         79,353,003.20 1.376000%     90,991.44   4,030,321.55  4,121,312.99   0.00                   0.00        75,322,681.65

A1B                    7,300,000.00          6,554,982.61  1.810000%     9,887.10    332,926.12    342,813.22     0.00                   0.00        6,222,056.49

A2                     29,126,000.00         29,126,000.00 3.250000%     78,882.92   0.00          78,882.92      0.00                   0.00        29,126,000.00

A3A                    31,000,000.00         31,000,000.00 5.000000%     129,166.67  0.00          129,166.67     0.00                   0.00        31,000,000.00

A3B                    20,000,000.00         20,000,000.00 5.110000%     85,166.67   0.00          85,166.67      0.00                   0.00        20,000,000.00

A4                     21,549,000.00         21,549,000.00 4.130000%     74,164.48   0.00          74,164.48      0.00                   0.00        21,549,000.00

A5                     20,669,000.00         20,669,000.00 5.490000%     94,560.68   0.00          94,560.68      0.00                   0.00        20,669,000.00

A6                     24,224,000.00         24,224,000.00 4.550000%     91,849.33   0.00          91,849.33      0.00                   0.00        24,224,000.00

A1II                   34,920,000.00         31,335,118.98 1.376000%     35,930.94   2,309,137.21  2,345,068.15   0.00                   0.00        29,025,981.77

A2II                   104,847,000.00        104,847,000.004.750000%     415,019.38  0.00          415,019.38     0.00                   0.00        104,847,000.00

M1I                    6,459,000.00          6,459,000.00  5.300000%     28,527.25   0.00          28,527.25      0.00                   0.00        6,459,000.00

M1II                   5,503,000.00          5,503,000.00  5.500000%     25,222.08   0.00          25,222.08      0.00                   0.00        5,503,000.00

M2I                    7,106,000.00          7,106,000.00  5.500000%     32,569.16   0.00          32,569.16      0.00                   0.00        7,106,000.00

M2II                   1,467,000.00          1,467,000.00  5.500000%     6,723.75    0.00          6,723.75       0.00                   0.00        1,467,000.00

M3I                    2,584,000.00          2,584,000.00  6.200000%     13,350.66   0.00          13,350.66      0.00                   0.00        2,584,000.00

X1                     923.55                0.00          0.000000%     320,527.67  0.00          320,527.67     0.00                   0.00        0.00

X2                     24.17                 0.00          0.000000%     159,556.94  0.00          159,556.94     0.00                   0.00        0.00

P1                     50.00                 50.00         0.000000%     26,865.49   0.00          26,865.49      0.00                   0.00        50.00

P2                     50.00                 50.00         0.000000%     0.00        0.00          0.00           0.00                   0.00        50.00

R                      0.00                  0.00          0.000000%     0.00        0.00          0.00           0.00                   0.00        0.00

Totals                 405,127,047.72        391,777,204.79              1,718,962.616,672,384.88  8,391,347.49   0.00                   0.00        385,104,719.91

Notional Classes

AIO                    141,794,465.00        141,794,465.003.913400%     462,415.34  0.00          462,415.34     0.00                   0.00        141,794,465.00

Component Classes

AIOI                   90,436,490.00         90,436,490.00 5.000000%     376,818.71  0.00          376,818.71     0.00                   0.00        90,436,490.00

AIOII                  51,357,975.00         51,357,975.00 2.000000%     85,596.63   0.00          85,596.63      0.00                   0.00        51,357,975.00

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)

A1A                    86359BHF1             897.942824    1.029641      45.606318   46.635959     0.000000       0.000000               852.336505

A1B                    86359BHG9             897.942823    1.354397      45.606318   46.960715     0.000000       0.000000               852.336505

A2                     86359BHH7             1,000.000000  2.708333      0.000000    2.708333      0.000000       0.000000               1,000.000000

A3A                    86359BHJ3             1,000.000000  4.166667      0.000000    4.166667      0.000000       0.000000               1,000.000000

A3B                    86359BJM4             1,000.000000  4.258334      0.000000    4.258334      0.000000       0.000000               1,000.000000

A4                     86359BHK0             1,000.000000  3.441667      0.000000    3.441667      0.000000       0.000000               1,000.000000

A5                     86359BHL8             1,000.000000  4.575000      0.000000    4.575000      0.000000       0.000000               1,000.000000

A6                     86359BHM6             1,000.000000  3.791667      0.000000    3.791667      0.000000       0.000000               1,000.000000

A1II                   86359BHN4             897.340177    1.028950      66.126495   67.155445     0.000000       0.000000               831.213682

A2II                   86359BHP9             1,000.000000  3.958333      0.000000    3.958333      0.000000       0.000000               1,000.000000

M1I                    86359BHR5             1,000.000000  4.416667      0.000000    4.416667      0.000000       0.000000               1,000.000000

M1II                   86359BHS3             1,000.000000  4.583333      0.000000    4.583333      0.000000       0.000000               1,000.000000

M2I                    86359BHT1             1,000.000000  4.583332      0.000000    4.583332      0.000000       0.000000               1,000.000000

M2II                   86359BHU8             1,000.000000  4.583333      0.000000    4.583333      0.000000       0.000000               1,000.000000

M3I                    86359BHV6             1,000.000000  5.166664      0.000000    5.166664      0.000000       0.000000               1,000.000000

X1                                           0.000000      347,060.4406910.000000    347,060.4406910.000000       0.000000               0.000000

AIO                    86359BHQ7             1,000.000000  3.261166      0.000000    3.261166      0.000000       0.000000               1,000.000000

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)

A1A                    79,353,003.20         1.376000%     90,991.44     0.00        0.00          90,991.44      0.00                   90,991.44   0.00

A1B                    6,554,982.61          1.810000%     9,887.10      0.00        0.00          9,887.10       0.00                   9,887.10    0.00

A2                     29,126,000.00         3.250000%     78,882.92     0.00        0.00          78,882.92      0.00                   78,882.92   0.00

A3A                    31,000,000.00         5.000000%     129,166.67    0.00        0.00          129,166.67     0.00                   129,166.67  0.00

A3B                    20,000,000.00         5.110000%     85,166.67     0.00        0.00          85,166.67      0.00                   85,166.67   0.00

A4                     21,549,000.00         4.130000%     74,164.48     0.00        0.00          74,164.48      0.00                   74,164.48   0.00

A5                     20,669,000.00         5.490000%     94,560.68     0.00        0.00          94,560.68      0.00                   94,560.68   0.00

A6                     24,224,000.00         4.550000%     91,849.33     0.00        0.00          91,849.33      0.00                   91,849.33   0.00

A1II                   31,335,118.98         1.376000%     35,930.94     0.00        0.00          35,930.94      0.00                   35,930.94   0.00

A2II                   104,847,000.00        4.750000%     415,019.38    0.00        0.00          415,019.38     0.00                   415,019.38  0.00

M1I                    6,459,000.00          5.300000%     28,527.25     0.00        0.00          28,527.25      0.00                   28,527.25   0.00

M1II                   5,503,000.00          5.500000%     25,222.08     0.00        0.00          25,222.08      0.00                   25,222.08   0.00

M2I                    7,106,000.00          5.500000%     32,569.16     0.00        0.00          32,569.16      0.00                   32,569.16   0.00

M2II                   1,467,000.00          5.500000%     6,723.75      0.00        0.00          6,723.75       0.00                   6,723.75    0.00

M3I                    2,584,000.00          6.200000%     13,350.66     0.00        0.00          13,350.66      0.00                   13,350.66   0.00

X1                     0.00                  0.000000%     320,527.67    0.00        0.00          320,527.67     0.00                   320,527.67  0.00

X2                     0.00                  0.000000%     159,556.94    0.00        0.00          159,556.94     0.00                   159,556.94  0.00

P1                     50.00                 0.000000%     26,865.49     0.00        0.00          26,865.49      0.00                   26,865.49   0.00

P2                     50.00                 0.000000%     0.00          0.00        0.00          0.00           0.00                   0.00        0.00

R                      0.00                  0.000000%     0.00          0.00        0.00          0.00           0.00                   0.00        0.00

  Totals               391,777,204.79                      1,718,962.61  0.00        0.00          1,718,962.61   0.00                   1,718,962.610.00

Notional Classes

AIO                    141,794,465.00        3.913400%     0.00          0.00        0.00          0.00           0.00                   462,415.34  0.00

Component Classes

AIOI                   90,436,490.00         5.000000%     376,818.71    0.00        0.00          376,818.71     0.00                   376,818.71  0.00

AIOII                  51,357,975.00         2.000000%     85,596.63     0.00        0.00          85,596.63      0.00                   85,596.63   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)

A1A                    88,372,000.00         79,353,003.20 4,030,321.55  0.00        0.00          0.00           75,322,681.65          0.00

A1B                    7,300,000.00          6,554,982.61  332,926.12    0.00        0.00          0.00           6,222,056.49           0.00

A2                     29,126,000.00         29,126,000.00 0.00          0.00        0.00          0.00           29,126,000.00          0.00

A3A                    31,000,000.00         31,000,000.00 0.00          0.00        0.00          0.00           31,000,000.00          0.00

A3B                    20,000,000.00         20,000,000.00 0.00          0.00        0.00          0.00           20,000,000.00          0.00

A4                     21,549,000.00         21,549,000.00 0.00          0.00        0.00          0.00           21,549,000.00          0.00

A5                     20,669,000.00         20,669,000.00 0.00          0.00        0.00          0.00           20,669,000.00          0.00

A6                     24,224,000.00         24,224,000.00 0.00          0.00        0.00          0.00           24,224,000.00          0.00

A1II                   34,920,000.00         31,335,118.98 2,309,137.21  0.00        0.00          0.00           29,025,981.77          0.00

A2II                   104,847,000.00        104,847,000.000.00          0.00        0.00          0.00           104,847,000.00         0.00

M1I                    6,459,000.00          6,459,000.00  0.00          0.00        0.00          0.00           6,459,000.00           0.00

M1II                   5,503,000.00          5,503,000.00  0.00          0.00        0.00          0.00           5,503,000.00           0.00

M2I                    7,106,000.00          7,106,000.00  0.00          0.00        0.00          0.00           7,106,000.00           0.00

M2II                   1,467,000.00          1,467,000.00  0.00          0.00        0.00          0.00           1,467,000.00           0.00

M3I                    2,584,000.00          2,584,000.00  0.00          0.00        0.00          0.00           2,584,000.00           0.00

X1                     923.55                0.00          0.00          0.00        0.00          0.00           0.00                   0.00

X2                     24.17                 0.00          0.00          0.00        0.00          0.00           0.00                   0.00

P1                     50.00                 50.00         0.00          0.00        0.00          0.00           50.00                  0.00

P2                     50.00                 50.00         0.00          0.00        0.00          0.00           50.00                  0.00

R                      0.00                  0.00          0.00          0.00        0.00          0.00           0.00                   0.00

  Totals               405,126,923.55        391,777,204.796,672,384.88  1,532,540.186,672,384.88  0.00           385,104,819.91         0.00

Collateral Summary -
Group 1

ASSET CHARACTERISTICS

                       Cut-Off               Prior         Current

Aggregate Stated
Principal Balance      258,389,973.55        248,625,035.81244,261,788.14

Loan Count             1,188                 1,151         1,131

Weighted Average Coupon
Rate (WAC)             7.235329%             7.193064%     N/A

Net Weighted Average
Coupon Rate (Net WAC)  6.965984%             6.893657%     N/A

Weighted Average
Maturity (WAM in       356                   354           353
months)

AVAILABLE PRINCIPAL    AVAILABLE INTEREST

Scheduled Interest     1,490,313.16
Curtailments           34,352.99
Less:                  Servicing Fees        55,557.14
AMBAC Insurance Premium1,816.80
Uncompensated PPIS     0.00
Relief Act Shortfall   0.00
Other Interest
Reductions             0.00
TOTAL AVAILABLE
PRINCIPAL              76,180.00
TOTAL AVAILABLE
INTEREST               1,432,939.22
Current Realized Losses0.00
Cumulative Realized
Losses                 0.00

Collateral Summary -
Group 2

ASSET CHARACTERISTICS

                       Cut-Off               Prior         Current

Aggregate Stated
Principal Balance      146,737,074.17        143,152,168.98140,843,031.77

Loan Count             293                   287           282

Weighted Average Coupon
Rate (WAC)             6.349242%             6.353015%     N/A

Net Weighted Average
Coupon Rate (Net WAC)  6.099242%             6.103015%     N/A

Weighted Average
Maturity (WAM in       358                   356           355
months)

AVAILABLE PRINCIPAL    AVAILABLE INTEREST

Scheduled Interest     757,873.14
Curtailments           22,909.37
Less:                  Servicing Fees        29,823.42
Insurance Fees         0.00
Uncompensated PPIS     0.00
Relief Act Shortfall   0.00
Other Interest
Reductions             0.00
TOTAL AVAILABLE
PRINCIPAL              76,180.00
TOTAL AVAILABLE
INTEREST               728,049.72
Current Realized Losses0.00
Cumulative Realized
Losses                 0.00

Delinquency Information

 GROUP 1

                       30-59 Days            60-89 Days    90+ Days      Totals

Delinquency

Scheduled Principal
Balance                2,756,879.50          143,467.20    94,170.49     2,994,517.19
Percentage of Total
Pool Balance           1.1287%               0.0587%       0.0386%       1.2259%
Number of Loans        11                    1             1             13

Percentage of Total
Loans                  0.9726%               0.0884%       0.0884%       1.1494%
Bankruptcy

Scheduled Principal
Balance                                      0.00          0.00          144,954.79  144,954.79
Percentage of Total Pool Balance             0.0000%       0.0000%       0.0593%     0.0593%

Number of Loans                              0             0             1           1
Percentage of Total
Loans                                        0.0000%       0.0000%       0.0884%     0.0884%

Foreclosure

Scheduled Principal
Balance                                      0.00          153,900.45    656,938.05  810,838.50
Percentage of Total Pool Balance             0.0000%       0.0630%       0.2689%     0.3320%

Number of Loans                              0             2             3           5
Percentage of Total
Loans                                        0.0000%       0.1768%       0.2653%     0.4421%

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                                      2,756,879.50  297,367.65    896,063.33  3,950,310.48
Percentage of Total Pool Balance             1.1287%       0.1217%       0.3668%     1.6172%

Number of Loans                              11            3             5           19
Percentage of Total
Loans                                        0.9726%       0.2653%       0.4421%     1.6799%

Principal and Interest
Advances               1,203,404.69

Delinquency Information

 GROUP 2

                       30-59 Days            60-89 Days    90+ Days      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               583,737.85

Other Information

Class 1-A1A Current Cap
Agreement Amount       0.00
Class 1-A1A Next Cap
Agreement Amount       0.00

Class 2-A1  Current Cap
Agreement Amount       0.00
Class 2-A1  Next Cap
Agreement Amount       0.00

Class 1-A1A Reserve
Fund                   1,000.00
Class 2-A1  Reserve
Fund                   1,000.00

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     1
2530 South Parker Road, Suite 601

Delinquency Information2

Trustee                Citibank, N.A.
Other Information      2

New York, NY  10005

Deal Contact:          Karen Schluter        Citibank, N.A.
karen.schluter@citi.com                      Agency and
                                             Trust
Tel: (212) 657-7781                          111 Wall Street, 14th Floor,
                                             Zone 3
Fax: (212) 657-4009                          New York, NY  10005

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                       www.sf.citidirect.com

STRUCTURED ASSET SECURITIES CORP MORT PAS THR CERT SE 04 4XS 8-K