UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 10-K/A
Amendment No. 1
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ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D)
OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2007
OR
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TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
Commission File Number 1-11781
DAYTON SUPERIOR CORPORATION
(Exact name of registrant as specified in its charter)
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Delaware
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31-0676346
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(State of incorporation)
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(I.R.S. Employer Identification No.)
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7777 Washington Village Dr.
Suite 130
Dayton, Ohio 45459
(Address of principal executive office)
Registrants telephone number, including area code: (937) 428-6360
Securities registered pursuant to Section 12(b) of the Act: Common Stock, par value $0.01 per
share, registered on The Nasdaq Stock Market LLC
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of
the Securities Act. Yes
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No
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Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or
Section 15(d) of the Act. Yes
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No
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Indicate by check mark whether the registrant (1) has filed all reports required to be filed by
Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for
such shorter period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days. Yes
x
No
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Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is
not contained herein, and will not be contained, to the best of registrants knowledge, in
definitive proxy or information statements incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K.
o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See definition of accelerated filer and
large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):
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Large accelerated filer
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Accelerated filer
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Smaller reporting company
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Non-accelerated filer
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Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act). Yes
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No
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As of March 14, 2008, there were 19,066,212 shares of common stock outstanding. As of June 30,
2007, the aggregate market value of common stock held by non-affiliates was $120,004,160 based on
the closing market price value of the common stock.