Common use of Authentication required Clause in Contracts

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President Name: Title: This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27July 26, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President Name: Title: This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27May 29, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx Xxxxx Xxxx Slough Senior Vice President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27May 30, 2007 2006 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President Name: Title: This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27May 30, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx Lxxxx Xxxx Slough Senior Vice President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27August 28, 2007 2006 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27March 28, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27November 29, 2007 2006 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 2726, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27September 28, 2007 2006 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President Name: Title: This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February July 27, 2007 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.

Authentication required. Unless this certificate has been executed by the Trustee or a duly authorized Authenticating Agent by manual signature, this certificate shall not be entitled to any benefit under the Pooling Agreement or be valid for any purpose. IN WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate to be duly executed. CITICORP MORTGAGE SECURITIES, INC. By:_______________________________ Dxxxxx X. Xxxxxxx President This is one of the certificates referred to in the Pooling Agreement referred to above. U.S. BANK NATIONAL ASSOCIATION, as Trustee By:_______________________________ Authorized Signatory or CITIBANK, N.A., as Authenticating Agent for the Trustee, By:_______________________________ Authorized Signatory Date: February 27December 21, 2007 2006 The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM - as tenants in common TEN ENT - as tenants by the entireties JT TEN - as joint tenants with right of survivorship and not as tenants in common UNIF GIFT MIN ACT - _______________ Custodian ____________________ (Cust) (Minor) Under Uniform Gifts to Minors Act ___________________________________ (State) FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE ________________________________________________________________ ________________________________________________________________ (Please print or typewrite name and address, including zip code, of assignee) ________________________________________________________________ the within certificate, and all rights thereunder, hereby irrevocably constituting and appointing ________________________________________________________________ attorney to transfer said certificate on the books of the Certificate Registrar with full power of substitution in the premises. Dated: ________________ __________________________ Signature Guaranteed by:_________________________________________ NOTICE: the signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever, and must be guaranteed by a member of a Signature Guarantee Medallion Program. February 1, 2007 PARTIES · U.S. Bank National Association, a national banking association, as trustee (the Trustee) · Citibank, N.A., a national banking association (Citibank) · Citicorp Mortgage Securities, Inc., a Delaware corporation (CMSI) · CitiMortgage, Inc., as Servicer and Master Servicer (CitiMortgage) BACKGROUND The Trustee, CMSI, CitiMortgage and Citibank are entering into a Pooling and Servicing Agreement dated February 1, 2007 relating to CMALT (CitiMortgage Alternative Loan Trust), Series 2007-A2 REMIC Pass-Through Certificates (the Pooling Agreement). Unless otherwise stated, terms defined in the Pooling Agreement are used in this agreement with the same meaning. Pursuant to the Pooling Agreement, · CMSI will sell to the Trustee, without recourse, the mortgage loans identified in exhibit B to the Pooling Agreement, and · Citibank has been designated as Mortgage Document Custodian and Mortgage Note Custodian.