UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported)

May 31, 2007

STRUCTURED ASSET SECURITIES CORPORATION (as Depositor under the Trust Agreement, dated as of of May 1, 2007, providing for the issuance of Lehman XS Trust Mortgage Pass-Through Certificates, Series 2007-9)

~~Lehman~~LEHMAN XS ~~Trust~~TRUST 2007-9 (~~Issuing Entity) Structured Asset Securities Corporation (~~Exact ~~Name~~name of ~~Depositor~~Issuing Entity as ~~Specified~~specified in its ~~Charter~~charter) ~~Lehman~~STRUCTURED ~~Brothers~~ASSET ~~Holdings~~SECURITIES ~~Inc.~~CORPORATION (Exact ~~Name~~name of ~~Sponsor~~Depositor as ~~Specified~~specified in its ~~Charter~~charter) ~~Structured~~LEHMAN ~~Asset~~BROTHERS ~~Securities~~HOLDINGS ~~Corporation~~INC. (Exact ~~Name~~name of ~~Registrant~~Sponsor as ~~Specified~~specified in its ~~Charter~~charter)


Delaware	333-133985	74-2440850
(State or Other Jurisdiction Of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

745 Seventh Avenue, 13th Floor New York, NY		10019
(Address of Principal Executive Offices)		(Zip Code)

745 Seventh Avenue, 13^th Floor New York, NY (Address of Principal Executive Offices)		10019 (Zip Code)

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

No Change ~~(Former Name or Former Address, if Changed Since Last Report)~~

(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:

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

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

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

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

Item 8.01. Other Events

~~McKee~~The ~~Nelson~~Registrant ~~LLP~~registered ~~has~~offerings ~~been~~of ~~retained~~its byLehman ~~this~~XS ~~Registrant~~Trust Mortgage Pass-Through Certificates, Series 2007-9, on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, as ~~counsel~~amended ~~for~~(the ~~its~~“Act”), by a Registration Statement on Form S-3 (~~Commission~~Registration File No. 333-133985) (the “Registration Statement”). Pursuant to the Registration Statement, the Registrant issued $653,481,000 in ~~connection~~aggregate ~~with~~principal amount of ~~various~~Class I-AIO, ~~transactions.~~Class ~~Legal~~I-A1, ~~opinions~~Class byI-A2, ~~McKee~~Class ~~Nelson~~I-A3, ~~LLP~~Class toI-A4, beClass ~~incorporated~~I-M1, Class I-M2, ~~into~~Class I-M3, Class I-M4, Class I-M5, Class I-M6, Class I-M7, Class I-M8, Class ~~the~~I-M9, ~~Registration~~Class ~~Statement~~WF-AIO, ~~are~~Class ~~attached~~WF-1, ~~hereto~~Class asWF-2, ~~Exhibit~~Class WF-3, Class WF-4, Class WF-5.1, Class ~~Exhibit~~WF-M1, 8Class WF-M2, Class WF-M3, Class WF-M4, Class WF-M5, Class WF-M6, Class WF-M7, Class WF-M8 and Class WF-M9 Certificates of its Lehman XS Trust Mortgage Pass-Through Certificates, Series 2007-9 on May 31, 2007.1 This Current Report on Form 8-K is being filed to satisfy an undertaking, contained in the definitive Prospectus dated May 22, 2007, as supplemented by the Prospectus Supplement dated May 29, 2007 (the “Prospectus Supplement”) to file a copy of the Trust Agreement (as defined below) and other operative agreements ~~Exhibit~~executed 23in connection with the issuance of the Certificates, a form of which was filed as an exhibit to the Registration Statement.1.

On May 31, 2007, the following classes of certificates in the following amounts were sold by the registrant to affiliates of the registrant in private placements in reliance on Section 4(2) of the Securities Act of 1933:

Class	Initial Principal Balance
Class 1-P	$100
Class 2-P	$100
Class 1-X	N/A
Class 2-X	N/A
Class 1-LT-R	N/A
Class 2-LT-R	N/A
Class 1-R	N/A
Class 2-R	N/A

The net proceeds from the sale of these certificates were applied by the registrant toward the purchase of the mortgage loans constituting the pool assets.

The Certificates were issued pursuant to a Trust Agreement (the “Trust Agreement”), attached hereto as Exhibit 4.1, dated as of May 1, 2007, among Structured Asset Securities Corporation, as depositor, LaSalle Bank National Association, as Trustee and Aurora Loan Services LLC, as master servicer. The “Certificates” consist of the following classes: Class I-AIO, Class I-A1, Class I-A2, Class I-A3, Class I-A4, Class I-M1, Class I-M2, Class I-M3, Class I-M4, Class I-M5, Class I-M6, Class I-M7, Class I-M8, Class I-M9, Class WF-AIO, Class WF-1, Class WF-2, Class WF-3, Class WF-4, Class WF-5, Class WF-M1, Class WF-M2, Class WF-M3, Class WF-M4, Class WF-M5, Class WF-M6, Class WF-M7, Class WF-M8, Class WF-M9, Class 1-P, Class 2-P, Class 1-X, Class 2-X, Class 1-LT-R, Class 2-LT-R, Class 1-R and Class 2-R Certificates. The Certificates evidence all of the beneficial ownership interest in a trust fund (the “Trust Fund”) that consists primarily of two pools: one pool of conventional, first lien, adjustable and fixed rate, fully amortizing and balloon, residential loans and a second pool consisting of conventional, first lien, fixed rate, fully amortizing and balloon, residential mortgage loans (the “Mortgage Loans”) with an aggregate outstanding principal balance of approximately $669,541,837 as of May 1, 2007. Capitalized terms used herein and not otherwise defined shall have the meanings assigned to them in the Trust Agreement.

Item 9.01. Financial Statements and Exhibits

(a) Not applicable.

(b) Not applicable.

(d) Exhibits:

5.1 Opinion of McKee Nelson LLP as to legality (including consent of such firm).

4.1	Trust Agreement dated as of May 1, 2007, among Structured Asset Securities Corporation, as Depositor, LaSalle Bank National Association, as Trustee and Aurora Loan Services LLC, as Master Servicer.

99.1	Mortgage Loan Sale and Assignment Agreement dated as of May 1, 2007, between Lehman Brothers Holdings Inc., as Seller, and Structured Asset Securities Corporation, as Purchaser.

99.2	Servicing Agreement dated as of May 1, 2007, among Aurora Loan Services LLC, as Master Servicer and Servicer, and Lehman Brothers Holdings Inc., as Seller.

99.3	Reconstituted Servicing Agreement dated as of May 1, 2007, among Lehman Brothers Holdings Inc., as Seller, LaSalle Bank National Association, as Trustee and Wells Fargo Bank, N.A., as Servicer.

99.4	Reconstituted Servicing Agreement dated as of May 1, 2007, among Lehman Brothers Holdings Inc., as Seller, LaSalle Bank National Association, as Trustee and GreenPoint Mortgage Funding, Inc., as Servicer.

99.5	The Group 1 Interest Rate Swap Agreement Confirmation and Group 1 Interest Rate Cap Agreement Confirmation, both dated as of May 31, 2007 (including ISDA Master Agreement, Schedule and Credit Support Annex), each between ABN AMRO Bank, N.V. and the Trustee on behalf of the Supplemental Interest Trust, Lehman XS Trust 2007-9.

99.6	The Group 2 Interest Rate Cap Agreement Confirmation, dated as of May 31, 2007, between Lehman Brothers Special Financing Inc. and the Trustee on behalf of Lehman XS Trust 2007-9.

~~8.1 Opinion of McKee Nelson LLP as to certain tax matters (including consent of such firm included in Exhibit 5.1).~~4

23.1 Consent of McKee Nelson LLP (included in Exhibit 5.1).

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/ Ellen V. Kiernan Name: Ellen V. Kiernan Title: Senior Vice President~~

~~Dated: May 31, 2007~~CORPORATION

By: /s/ Ellen V. Kiernan

Name: Ellen V. Kiernan

Title: Senior Vice President

Dated: June 15, 2007

EXHIBIT INDEX

Exhibit No. Description

5.1 Opinion of McKee Nelson LLP as to legality (including consent of such firm).

4.1	Trust Agreement dated as of May 1, 2007, among Structured Asset Securities Corporation, as Depositor, LaSalle Bank National Association, as Trustee and Aurora Loan Services LLC, as Master Servicer.

99.1	Mortgage Loan Sale and Assignment Agreement dated as of May 1, 2007, between Lehman Brothers Holdings Inc., as Seller, and Structured Asset Securities Corporation, as Purchaser.

99.2	Servicing Agreement dated as of May 1, 2007, among Aurora Loan Services LLC, as Master Servicer and Servicer, and Lehman Brothers Holdings Inc., as Seller.

99.3	Reconstituted Servicing Agreement dated as of May 1, 2007, among Lehman Brothers Holdings Inc., as Seller, LaSalle Bank National Association, as Trustee and Wells Fargo Bank, N.A., as Servicer.

99.4	Reconstituted Servicing Agreement dated as of May 1, 2007, among Lehman Brothers Holdings Inc., as Seller, LaSalle Bank National Association, as Trustee and GreenPoint Mortgage Funding, Inc., as Servicer.

99.5	The Group 1 Interest Rate Swap Agreement Confirmation and Group 1 Interest Rate Cap Agreement Confirmation, both dated as of May 31, 2007 (including ISDA Master Agreement, Schedule and Credit Support Annex), each between ABN AMRO Bank, N.V. and the Trustee on behalf of the Supplemental Interest Trust, Lehman XS Trust 2007-9.

99.6	The Group 2 Interest Rate Cap Agreement Confirmation, dated as of May 31, 2007, between Lehman Brothers Special Financing Inc. and the Trustee on behalf of Lehman XS Trust 2007-9.

~~8.1 Opinion of McKee Nelson LLP as to certain tax matters (including consent of such firm included in Exhibit 5.1).~~6

23.1 Consent of McKee Nelson LLP (included in Exhibit 5.1).

Filing Compare · Lehman XS Trust 2007-9