UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES ~~AND~~ EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported)

~~September~~October 3014, 2005

Structured Asset Securities Corporation

(Exact Name of Registrant as Specified in its Charter)

Delaware	333-127589	74-2440850
State or Other Jurisdiction Of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
(State or Other Jurisdiction Of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

745 Seventh Avenue, 7^th Floor

New York, New York

10019

(Address of Principal

Executive Offices)

(Zip Code)

Registrant’s telephone number, including area code: (212) 526-7000

None

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.¹

~~Filed~~In ~~herewith~~connection ~~are~~with ~~certain materials (~~the ~~“Computational~~offering ~~Materials”)~~of ~~furnished to~~ the ~~Registrant~~First byFranklin ~~Lehman~~Mortgage ~~Brothers~~Loan ~~Inc. (the “Underwriter”) in respect of Lehman XS~~ Trust Mortgage Pass-Through Certificates, Series 2005-4FF10, ~~Class~~Lehman ~~1-A1,~~Brothers ~~Class~~Inc. ~~1-A2,~~as ~~Class~~underwriter ~~1-A3,~~of ~~Class~~the ~~1-A4,~~Certificates ~~Class 1-AX, Class 1-M1, Class 1-M2, Class 1-M3, Class 2-A1A, Class 2-A1B, Class 2-A2, Class 2-A3A, Class 2-A3B, Class 2-A4, Class 2-A5A, Class 2-A5B, Class 2-M1, Class 2-M2 and Class 2-M3~~ (the “~~Publicly-Offered Certificates~~Underwriter”)~~. The~~ ~~Publicly-Offered~~has ~~Certificates~~prepared ~~are~~certain ~~being~~materials ~~offered~~(the ~~pursuant~~“Collateral toTerm ~~a Prospectus Supplement dated September 29~~Sheet”), ~~2005,~~for ~~and~~distribution ~~the~~to ~~related~~potential ~~Prospectus~~investors. Although ~~dated~~Structured ~~September~~Asset ~~26,~~Securities ~~2005~~Corporation ~~(together,~~provided the ~~“Prospectus”),~~Underwriter ~~which are being filed~~ with ~~the~~certain ~~Commission~~information ~~pursuant~~regarding ~~to Rule 424(b) under~~ the ~~Securities~~characteristics ~~Act~~ of ~~1933, as amended (~~the ~~“Act”). The~~mortgage ~~Publicly-Offered~~loans ~~Certificates~~in ~~have been registered pursuant to~~ the ~~Act~~related ~~under~~portfolio, ait ~~Registration~~did ~~Statement~~not onparticipate ~~Form~~in ~~S-3~~the ~~(No.~~preparation ~~333-127589)~~of (the ~~“Registration~~Collateral ~~Statement”). The~~Term ~~Computational~~Sheet ~~Materials~~filed ~~are incorporated by reference in the Registration Statement~~hereby.

~~The~~For ~~Computational~~purposes ~~Materials~~of ~~were~~this ~~prepared~~Form ~~solely~~8-K, by“Collateral Term Sheet” shall mean certain descriptive information about the ~~Underwriter~~mortgage ~~and~~loans underlying the ~~Registrant~~offering ~~did~~of ~~not~~Structured ~~prepare~~Asset orSecurities ~~participate~~Corporation ~~(other~~Mortgage ~~than~~Pass-Through ~~providing~~Certificates, including data regarding the ~~background~~contractual ~~information~~and ~~concerning~~related characteristics of the underlying ~~pool~~mortgage ofloans, ~~assets~~such ~~upon~~as ~~which~~ the ~~Computational~~weighted ~~Materials~~average ~~are~~coupon, ~~based~~weighted toaverage ~~the~~maturity ~~Underwriter)~~and inother factual information regarding the ~~preparation~~types of assets comprising the ~~Computational~~mortgage ~~Materials~~pool. The Collateral Term Sheets will be filed hereby as Exhibit 99.1.

Any statements or information contained in the Computational Materials shall be deemed to be modified or superseded for purposes of the Prospectus and the Registration Statement by statements or information contained in the Prospectus.

.Capitalized terms used but not otherwise defined herein shall have the same meanings ascribed to them in the Prospectus.

Item 9.01. Financial Statements and Exhibits.

(a)

Not applicable.

(b)

Not applicable.

(c)

Not applicable.

(d)

Exhibits:

99.1

~~Computational~~Collateral ~~Materials~~Term Sheet

99.2

Computational Materials

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

STRUCTURED ASSET SECURITIES

CORPORATION

By: /s/ ~~Brian~~Ellen ~~Lin~~ V. Kiernan __

Name: ~~Brian~~Ellen ~~Lin~~V. Kiernan

Title: Senior Vice President

Dated: ~~September~~ 30October 18, 2005

EXHIBIT INDEX

Exhibit No.

Description

99.1

~~Computational~~Collateral ~~Materials~~Term Sheet

Exhibit 99.21 Collateral Term Sheet

Computational Materials

Exhibit 99.1 Computational Materials

Exhibit 99.2 Computational Materials

Filing Compare · STRUCTURED ASSET SECURITIES CORP