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FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION NO. 333-83469
PROSPECTUS SUPPLEMENT
DATED OCTOBER 5, 1999
TO PROSPECTUS DATED SEPTEMBER 1, 1999
OXBORO MEDICAL INTERNATIONAL, INC.
Effective September 30, 1999, Oxboro Medical International, Inc. (the
"Company") has exercised its right to extend the rights offering described in
its Prospectus dated September 1, 1999 (the "Prospectus") relating to the
offering of up to 890,824 shares of the Company's Common Stock, par value $.01
per share, and up to 445,412 Warrants to purchase additional shares of Common
Stock of the Company (the "Warrants"). The Company has prepared this Prospectus
Supplement to update those sections of the Prospectus relating to the
termination date of the initial offering period and the Oversubscription
Privilege. This Prospectus Supplement should be read in connection with the
Prospectus. Defined terms used in this Prospectus Supplement but not otherwise
defined have the meanings set forth in the Prospectus. The information contained
in this Prospectus Supplement supplements and is a part of the cover page and
the sections entitled "Summary - Rights Offering," "- Rights Offering - Basic
Subscription Privilege" and "- Rights Offering - Expiration Date" of the
Prospectus.
As a result of the extension of the rights offering period, the
Prospectus is hereby amended and supplemented as follows:
1. The eighth paragraph of the cover page of the Prospectus is
amended by deleting the first sentence in its entirety and
replacing it with the following:
"The initial offering of these purchase rights will begin on
September 1, 1999 and terminate at midnight, central time, on
October 29, 1999. The Oversubscription Privilege for this
rights offering will begin on November 1, 1999 and terminate
at midnight, central time, on November 30, 1999."
2. The second sentence of paragraph 5, which begins the section
entitled "Rights Offering," in the Summary section on page 4
of the Prospectus, is amended by deleting the second sentence
in its entirety and replacing it with the following:
"The offering period began on September 1, 1999 and will
continue until midnight, central time, on October 29, 1999
with respect to the initial offering period, and at midnight,
central time, on November 30, 1999 with respect to the
Oversubscription Privilege, unless extended by us."
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3. The third sentence of the paragraph entitled "Basic
Subscription Privilege" under the subsection "Rights Offering"
on page 5 in the Summary section of the Prospectus is amended
by deleting the third sentence in its entirety and replacing
it with the following:
"The warrants are expected to expire on September 30, 2000,
October 29, 2000 or November 30, 2000 depending upon the date
of issuance."
4. The paragraph entitled "Expiration Date" under the subsection
"Rights Offering" on page 5 in the Summary section of the
Prospectus is amended by deleting the paragraph in its
entirety and replacing it with the following:
"Beginning on September 1, 1999, shareholders may exercise
their initial rights to purchase shares in this offering for a
period of fifty-nine days and then may exercise their
oversubscription privilege during an additional thirty-day
period until 12:00 midnight, central time, on November 30,
1999, unless extended by our board of directors. After the
expiration of this rights offering, the rights will expire and
have no value."
5. The second paragraph of the section entitled "Where You Can
Find More Information" on page 3 of the Prospectus,
specifically the list of documents filed by the Company with
the SEC and incorporated by reference into the Prospectus, is
hereby amended by the addition of the Company's Current Report
on Form 8-K, filed with the SEC on October 5, 1999 with
respect to the extension of the rights offering.
THIS PROSPECTUS SUPPLEMENT IS NOT VALID UNLESS ACCOMPANIED OR PRECEDED
BY THE CURRENT PROSPECTUS OF OXBORO MEDICAL INTERNATIONAL, INC. DATED SEPTEMBER
1, 1999 AND SHOULD BE READ TOGETHER WITH THE PROSPECTUS. THIS SUPPLEMENT AND THE
PROSPECTUS SHOULD BE READ AND RETAINED FOR FURTHER REFERENCE.
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The date of this Prospectus Supplement is October 5, 1999.
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