UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
(Rule 14a-101)
INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
(Amendment No. )
Filed by the Registrant o
Filed by a Party other than the Registrant x
Check the appropriate box:
o Preliminary Proxy Statement
¨ Confidential, for Use of the Commission Only (as permitted by Rule14a-6(e)(2))
o Definitive Proxy Statement
x Definitive Additional Materials
o Soliciting Material Under Rule 14a-12
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NABI BIOPHARMACEUTICALS
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(Name of Registrant as Specified in Its Charter)
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THE MANGROVE PARTNERS FUND, L.P.
MANGROVE PARTNERS
MANGROVE CAPITAL
NATHANIEL AUGUST
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(Name of Persons(s) Filing Proxy Statement, if Other Than the Registrant)
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Payment of Filing Fee (Check the appropriate box):
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¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
(1) Title of each class of securities to which transaction applies:
(2) Aggregate number of securities to which transaction applies:
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(3)
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Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
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(4) Proposed maximum aggregate value of transaction:
(5) Total fee paid:
¨ Fee paid previously with preliminary materials:
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The Mangrove Partners Fund, L.P., together with the other participants named herein (collectively, “Mangrove Partners”), has made a definitive filing with the Securities and Exchange Commission of a proxy statement and accompanying GREEN proxy card to be used to solicit votes in opposition to the proposed transaction between Nabi Biopharmaceuticals, a Delaware corporation (the “Company”), and Biota Holdings Limited, a Melbourne, Australia corporation, and related transaction proposals at the Company’s special meeting of stockholders to be held on September 24, 2012.
On August 29, 2012, Mangrove Partners issued the Investor Presentation attached as Exhibit 1.