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Rule 424(b)(3)
Registration No. 333-15911
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PROSPECTUS SUPPLEMENT DATED MAY 21, 1997
(to prospectus dated November 14, 1996,
and prospectus supplements thereto dated
February 7, 1997 and March 11, 1997)
DYNAMEX INC.
RECENT DEVELOPMENTS
On May 16, 1997, Dynamex Inc. (the "Company") acquired the stock of
Road Runner Transportation, Inc. ("Road Runner"). Road Runner is engaged in the
same-day transportation business, primarily in the Minneapolis-St. Paul,
Minnesota area. The stockholders of Road Runner received $11.2 million in cash
and 350,000 shares of the Company's common stock, $.01 par value per share, in
the transaction. In addition, the former stockholders may receive additional
consideration if certain performance goals are met by Road Runner. The
consideration was determined in arms-length negotiations between the Company
and the stockholders of Road Runner. The transaction is being accounted for
using the purchase method of accounting.
The cash portion of the purchase price was obtained by the Company
pursuant to its revolving credit agreement with NationsBank of Texas, N.A.
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The date of this Prospectus Supplement is May 21, 1997
