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:  February 26, 2004
(Date of earliest event reported)

Commission File No. 333-105940



                    Banc of America Mortgage Securities, Inc.
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         Delaware                                         36-4514369
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(State of Incorporation)                    (I.R.S. Employer Identification No.)



201 North Tryon Street, Charlotte, North Carolina                     28255
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     Address of principal executive offices                         (Zip Code)



                                 (704) 387-8239
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               Registrant's Telephone Number, including area code




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              (Former name, former address and former fiscal year,
                          if changed since last report)



ITEM 5.     Other Events
            ------------

On February 26, 2004, Banc of America Mortgage Securities, Inc., a Delaware
corporation (the "Registrant"), sold Banc of America Alternative Loan Trust
2004-2 Mortgage Pass-Through Certificates, Series 2004-2, Class 1-A-1, Class
1-A-R, Class 1-A-MR, Class 1-A-LR, Class 2-A-1, Class 2-A-2, Class 2-A-3, Class
2-A-4, Class 2-A-5, Class 2-A-6, Class 2-A-7, Class CB-IO, Class 3-A-1, Class
3-IO, Class 4-A-1, Class 5-A-1, Class 15-IO, Class PO, Class 30-B-IO, Class
30-B-1, Class 30-B-2, Class 30-B-3, Class 15-B-1, Class 15-B-2 and Class 15-B-3
(the "Offered Certificates"), having an aggregate original principal balance of
$294,515,280.00. The Offered Certificates were issued pursuant to a Pooling and
Servicing Agreement, dated February 26, 2004, among the Registrant, Bank of
America, N.A., as servicer ("BANA") and Wells Fargo Bank, National Association,
as trustee (the "Agreement"), a copy of which is filed as an exhibit hereto.
Mortgage Pass-Through Certificates, Series 2004-2, Class SES, Class 30-B-4,
Class 30-B-5 Class 30-B-6, Class 15-B-4, Class 15-B-5 and Class 15-B-6
Certificates, having an aggregate initial principal balance of $3,087,407.00
(the "Private Certificates" and, together with the Offered Certificates, the
"Certificates"), were also issued pursuant to the Agreement.

As of the date of initial issuance, the Offered Certificates evidenced an
approximate 98.96% undivided interest in a trust (the "Trust"), consisting
principally of five pools of fixed interest rate, conventional, monthly pay,
fully-amortizing, one- to four-family residential first mortgage loans. The
remaining undivided interests in the Trust are evidenced by the Private
Certificates distributions on which are subordinated to distributions on the
Offered Certificates.

Interest on the Offered Certificates will be distributed on each Distribution
Date (as defined in the Agreement). Monthly distributions in reduction of the
principal balance of the Offered Certificates will be allocated to the Offered
Certificates in accordance with the priorities set forth in the Agreement.
Distributions of interest and in reduction of principal balance on any
Distribution Date will be made to the extent that the related Pool Distribution
Amount is sufficient therefor.

Elections will be made to treat the Trust as two separate REMICs for federal
income tax purposes (the "Upper-Tier REMIC," the "Middle-Tier REMIC" and the
"Lower-Tier REMIC" and each a "REMIC"). The Class 1-A-1, Class 2-A-1, Class
2-A-2, Class 2-A-3, Class 2-A-4, Class 2-A-5, Class 2-A-6, Class 2-A-7, Class
3-A-1, Class 3-IO, Class 4-A-1, Class 5-A-1, Class 30-B-IO, Class 30-B-1, Class
30-B-2, Class 30-B-3, Class 30-B-4, Class 30-B-5, Class 30-B-6, Class 15-B-1,
Class 15-B-2, Class 15-B-3, Class 15-B-4, Class 15-B-5 and Class 15-B-6
Certificates and each Class IO, Class PO and Class SES Component will be treated
as "regular interests" in the REMIC and the Class 1-A-R, Class 1-A-MR and Class
1-A-LR Certificates will be treated as the "residual interest" in the Upper-Tier
REMIC, the Middle-Tier REMIC and the Lower-Tier REMIC, respectively.




ITEM 7.     Financial Statements and Exhibits
            ---------------------------------

(c)   Exhibits

Item 601(a)
of Regulation S-K
Exhibit No.                            Description
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      (EX-4)                           Pooling and Servicing Agreement, dated
                                       February 26, 2004, among Banc of America
                                       Mortgage Securities, Inc., Bank of
                                       America, N.A. and Wells Fargo Bank,
                                       National Association, as trustee.




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


                                    BANC OF AMERICA MORTGAGE SECURITIES, INC.


February 26, 2004

                                    By:   /s/ Judy Lowman
                                       --------------------------------------
                                       Name:  Judy Lowman
                                       Title: Vice President




                                INDEX TO EXHIBITS
                                -----------------

                                                                 Paper (P) or
Exhibit No.            Description                               Electronic (E)
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   (EX-4)              Pooling and Servicing Agreement,                E
                       dated February 26, 2004 among
                       Banc of America Mortgage
                       Securities, Inc., Bank of
                       America, N.A. and Wells Fargo
                       Bank, National Association, as
                       trustee.