UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 7)*

Nabi Biopharmaceuticals.

(Name of Issuer)

Common Stock, par value $0.10 per share

(Title of Class of Securities)

629519109

(CUSIP Number)

David M. Knott

Chief Executive Officer

Dorsett Management Corporation

485 Underhill Boulevard, Suite 205

Syosset, New York 11791

 (516) 364-0303

With a copy to:

Howard A. Neuman, Esq.

Satterlee Stephens Burke & Burke LLP

230 Park Avenue

New York, NY 10169

(212) 818-9200

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

December 31, 2009

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box x

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §13d-7 (b) for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No.   629519109
	1	Name of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) David M. Knott
	2	Check the Appropriate Box if a Member of a Group. (See Instructions)
		(a)			o
		(b)			x
	3	SEC Use Only
	4	Source of Funds (See Instructions) OO
	5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			7	Sole Voting Power 3,835,973 shares of Common Stock
			8	Shared Voting Power 104,600 shares of Common Stock
			9	Sole Dispositive Power 3,980,373 shares of Common Stock
			10	Shared Dispositive Power 0 shares of Common Stock
	11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,980,373 shares of Common Stock
	12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13	Percent of Class Represented by Amount in Row (11) 7.8%
	14	Type of Reporting Person (See Instructions) IN

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CUSIP No.   629519109
	1	Name of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Dorset Management Corporation 11-2873658
	2	Check the Appropriate Box if a Member of a Group. (See Instructions)
		(a)			o
		(b)			x
	3	SEC Use Only
	4	Source of Funds (See Instructions) WC
	5	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6	Citizenship or Place of Organization New York
Number of Shares Beneficially Owned by Each Reporting Person With			7	Sole Voting Power 3,835,973 shares of Common Stock
			8	Shared Voting Power 104,600 shares of Common Stock
			9	Sole Dispositive Power 3,980,373 shares of Common Stock
			10	Shared Dispositive Power 0 shares of Common Stock
	11	Aggregate Amount Beneficially Owned by Each Reporting Person 3,980,373 shares of Common Stock
	12	Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13	Percent of Class Represented by Amount in Row (11) 7.8%
	14	Type of Reporting Person (See Instructions) CO

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Item 1.	Security and Issuer.
Item 2.	Identity and Background.
Item 3.	Source and Amount of Funds or Other Consideration.
Item 4.	Purpose of Transaction.
The Reporting Parties acquired the Common Stock for investment in the ordinary course of business.  The Reporting Parties believe that the Common Stock at current market prices is undervalued and represents an attractive investment opportunity.  The Reporting Parties may make further purchases of the Common Stock from time to time and may dispose of any or all of the Common Stock held by the Reporting Parties at any time. By letter dated October 6, 2006, formerly attached as Exhibit A, sent previously by Anthony R. Campbell, a Member of Knott Partners Management, LLC to the Board of Directors of the Company, stated the Reporting Parties’ belief that having Thomas H. McLain continue as CEO and Chairman of the Board of Directors will impede the Company’s efforts to explore strategic alternatives and will undermine efforts to maximize shareholder value.  Because Mr. McLain is no longer CEO and Chairman of the Board of Directors of the Company, that letter is withdrawn in its entirety.  The Reporting Parties do not have any present plan or proposal that would relate to or result in any of the actions or transactions enumerated in clauses (a) through (j) of Item 4 of Schedule 13D.
Item 5.	Interest in Securities of the Issuer.
Item 6.	Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.
Item 7.	Material to be Filed as Exhibits.

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SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

February 10, 2010
Date
/s/David M. Knott
Signature
DORSET MANAGEMENT CORPORATION
By:	/s/David M. Knott
	David M. Knott, President

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