PROSPECTUS SUPPLEMENT                          Filed pursuant to Rule 424(b)(3)
To Prospectus Dated May 3, 1996,                      Registration No. 333-2253 
As Supplemented to Date                               

                                  $80,500,000

                                     NABI

                 6 1/2% Convertible Subordinated Notes due 2003
                                      and
               Shares of Common Stock, Par Value $.10 Per Share,
                       Issuable Upon Conversion Thereof

     This Prospectus Supplement (the "Supplement") relates to the resale by
Donaldson, Lufkin & Jenrette Securities Corporation ("DLJ") of up to $340,000
aggregate principal amount of 6 1/2% Convertible Subordinated Notes due 2003
(the "Notes") of NABI, a Delaware corporation (the "Company"), originally issued
in private placements consummated on February 7 and March 6, 1996 (the "Debt
Offering"), pursuant to NABI's Registration Statement on Form S-3 (No. 333-2253)
(the "Registration Statement"). This Supplement should be read in conjunction
with the Prospectus dated May 3, 1996, as supplemented to date (the
"Prospectus"), to be delivered with this Supplement. All capitalized terms used
but not defined in this Supplement shall have the meanings given them in the
Prospectus.

     Based on information provided to the Company, the aggregate principal
amount of the Notes that are currently beneficially owned by DLJ is $1,425,000,
of which $340,000 may be sold at this time pursuant to the Prospectus as
supplemented hereby. Additional information concerning the Selling
Securityholders (including DLJ) may be set forth from time to time in additional
supplements to the Prospectus. The total outstanding aggregate principal amount 
of the Notes is $80,500,000.

     The closing price of the Company's Common Stock as reported on The Nasdaq
National Market on September 17, 1996 was $11.375 per share.

     The Notes will be subordinated to all existing and future Senior
Indebtedness of the Company. At August 23, 1996, Senior Indebtedness was
approximately $6,300,000. The Indenture contains no limitations on the
incurrence of additional indebtedness or other liabilities by the Company.

     The Notes are neither listed on a national securities exchange nor quoted
on an automated quotation system. However, the Notes are eligible for trading in
the Private Offerings, Resales and Trading through Automated Linkages ("PORTAL")
Market. Notes sold pursuant to the Registration Statement will no longer be
eligible for trading in the PORTAL Market.

         The date of this Prospectus Supplement is September 18, 1996.