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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) February 2, 2000
Credit Suisse First Boston Mortgage Securities Corp.
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(Exact name of registrant as specified in its charter)
DELAWARE 333-53115 13-3320910
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(State or other jurisdiction (Commission) (I.R.S. employer
of incorporation) file number) identification no.)
11 Madison Avenue, 5th Floor New York, New York 10010
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(Address of principal executive offices) (Zip code)
Registrant's telephone number, including area code (212) 325-2000
(Former name or former address, if changed since last report)
Exhibit Index located on Page 2
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Item 5. Other Events.
On December 23, 1999, the Registrant caused the issuance and
sale of approximately $1,302,355,058 initial principal amount of
Mortgage-Backed Pass-Through Certificates, Series 1999-WM3, Class 1 A-1,
Class 1 A-2, Class 1 A-3, Class 1 A-4, Class 1 A-P, Class 1 M-1, Class 1
M-2, Class 1 M-3, Class 1 B-1, Class 1 B-2, Class 2 A-1, Class 2 A-2,
Class 2 A-3, Class 2 A-4, Class 2 A-5, Class 2 A-P, Class 2 M-1, Class 2
M-2, Class 2 M-3, Class 2 B-1, Class 2 B-2, Class B-3, Class R-1 and
Class R-2 (the "Certificates") pursuant to a Pooling and Servicing
Agreement dated as of December 1, 1999, among the Registrant, Washington
Mutual Bank, FA, as seller and servicer, and Bank One, National
Association, a national banking association, as Trustee.
In connection with the sale of the Series 1999-WM3, Class 2
A-1, Class 2 A-2, Class 2 A-3, Class 2 A-4, Class 2 A-5, Class 2 A-P,
Class 2 M-1, Class 2 M-2 and Class 2 M-3 (the "Underwritten
Certificates") to Credit Suisse First Boston Corporation (the
"Underwriter"), the Registrant has been advised by the Underwriter that
the Underwriter has furnished to prospective investors certain yield
tables and other computational materials (the "Computational Materials")
with respect to the Underwritten Certificates following the effective
date of Registration Statement No. 333-53115, which Computational
Materials are being filed manually as exhibits to this report.
The Computational Materials have been provided by the
Underwriter. The information in the Computational Materials is
preliminary and may be superseded by the Prospectus Supplement relating
to the Certificates and by any other information subsequently filed with
the Securities and Exchange Commission.
The Computational Materials consist of the pages (the
"Computational Materials") that appear after the Form SE cover sheet and
the page headed "EXHIBIT". The Underwriter has advised the Registrant
that certain information in the Computational Materials may have been
based on assumptions that differed from the final pool information.
The Computational Materials were prepared by the Underwriter
at the request of certain prospective investors, based on assumptions
provided by, and satisfying the special requirements of, such
prospective investors. The Computational Materials may be based on
assumptions that differ from the assumptions set forth in the Prospectus
Supplement. The Computational Materials may not include, and do not
purport to include, information based on assumptions representing a
complete set of possible scenarios. Accordingly, the Computational
Materials may not be relevant to or appropriate for investors other than
those specifically requesting them.
In addition, the actual characteristics and performance of the
mortgage loans underlying the Certificates (the "Mortgage Loans") may
differ from the assumptions used in the Computational Materials, which
are hypothetical in nature and which were provided
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to certain investors only to give a general sense of how the yield,
average life, duration, expected maturity, interest rate sensitivity and
cash flow characteristics of a particular class of Underwritten
Certificates might vary under varying prepayment and other scenarios.
Any difference between such assumptions and the actual characteristics
and performance of the Mortgage Loans will affect the actual yield,
average life, duration, expected maturity, interest rate sensitivity and
any cash flow characteristics of a particular class of Underwritten
Certificates.
Item 7. Financial Statements, Pro Forma Financial Information and
Exhibits.
(a) Financial Statements
Not applicable
(b) Pro Forma Financial Information
Not applicable
(c) Exhibits
Exhibit Item 601(a) of Regulation S-K
Number Exhibit No. Description
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1 99 Computational Materials
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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 thereunto duly authorized.
CREDIT SUISSE FIRST BOSTON
MORTGAGE SECURITIES CORP.
By: /s/ Kari Skilbred
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Name: Kari Skilbred
Title: Vice President
Dated: February 2, 2000
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EXHIBIT INDEX
Item 601(a) Sequentially
Exhibit of Regulation S-K Numbered
Number Exhibit No. Description Page
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1 99 Computational Materials Filed Manually
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Exhibit 99
EXHIBIT
