Anadys Pharmaceuticals (ANDS) SC 13D/A ANADYS PHARMACEUTICALS / QVT Financial ownership change

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Anadys Pharmaceuticals, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

03252Q408

(CUSIP Number)

Fati Sadeghi-Nejad, Esq.
General Counsel
QVT Financial LP
1177 Avenue of the Americas, 9^th Floor, New York, NY 10036
(212) 705-8888

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

October 17, 2011

(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.þ

Note:Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240. 13d-7 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. 03252Q408 

1	NAMES OF REPORTING PERSONS I.R.S. Identification Nos. of above persons (entities only). QVT Financial LP 11-3694008
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a)   o
	(b)   þ
3	SEC USE ONLY
4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
	o
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
		7	SOLE VOTING POWER
NUMBER OF			0
SHARES		8	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			10,770,554
EACH		9	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0
WITH		10	SHARED DISPOSITIVE POWER
			10,770,554
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,770,554
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	18.84%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

Page 2 of 8 pages

CUSIP No. 03252Q408 

1	NAMES OF REPORTING PERSONS I.R.S. Identification Nos. of above persons (entities only). QVT Financial GP LLC 11-3694007
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a)   o
	(b)   þ
3	SEC USE ONLY
4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
	o
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
		7	SOLE VOTING POWER
NUMBER OF			0
SHARES		8	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			10,770,554
EACH		9	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0
WITH		10	SHARED DISPOSITIVE POWER
			10,770,554
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,770,554
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	18.84%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO

Page 3 of 8 pages

CUSIP No. 03252Q408 

1	NAMES OF REPORTING PERSONS I.R.S. Identification Nos. of above persons (entities only). QVT Fund LP 98-0415217
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a)   o
	(b)   þ
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
	Cayman Islands
		7	SOLE VOTING POWER
NUMBER OF			0
SHARES		8	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			9,713,359
EACH		9	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0
WITH		10	SHARED DISPOSITIVE POWER
			9,713,359
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	9,713,359
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	16.99%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	PN

Page 4 of 8 pages

CUSIP No. 03252Q408 

1	NAMES OF REPORTING PERSONS I.R.S. Identification Nos. of above persons (entities only). QVT Associates GP LLC 01-0798253
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a)   o
	(b)   þ
3	SEC USE ONLY
4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	AF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
	o
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
		7	SOLE VOTING POWER
NUMBER OF			0
SHARES		8	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			10,770,554
EACH		9	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0
WITH		10	SHARED DISPOSITIVE POWER
			10,770,554
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	10,770,554
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	18.84%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	OO

Page 5 of 8 pages

Item 1. Security and Issuer

This Amendment No. 1 to Schedule 13D amends and supplements the Schedule 13D filed with the Securities and Exchange Commission (the “Commission”) by the Reporting Persons on January 3, 2011 (the “Schedule 13D”). Capitalized terms used but not defined herein have the meanings ascribed to them in the Schedule 13D. Except as expressly set forth herein, there have been no changes to the information set forth in the Schedule 13D.

Item 5. Interest in Securities of the Issuer

(a) and (b) The information contained on the cover pages to this Schedule 13D is incorporated herein by reference.

All percentages referred to on the cover pages are determined using a denominator of 57,176,285 shares of Common Stock issued and outstanding as of August 4, 2011, as reported by the Issuer in its Form 10-Q for the quarter ended June 30, 2011, as filed with the Commission on August 9, 2011.

QVT Financial LP (“QVT Financial”) is the investment manager for QVT Fund LP (the “Fund”), which beneficially owns 9,713,359 shares of Common Stock. QVT Financial is also the investment manager for Quintessence Fund L.P. (“Quintessence”), which beneficially owns 1,057,195 shares of Common Stock. QVT Financial has the power to direct the vote and disposition of the Common Stock held by each of the Fund and Quintessence. Accordingly, QVT Financial may be deemed to be the beneficial owner of an aggregate amount of 10,770,554 shares of Common Stock, consisting of the shares owned by the Fund and Quintessence.

QVT Financial GP LLC, as general partner of QVT Financial, may be deemed to beneficially own the same number of shares of Common Stock reported by QVT Financial. QVT Associates GP LLC, as general partner of the Fund and Quintessence, may be deemed to beneficially own the aggregate number of shares of Common Stock owned by the Fund and Quintessence, and accordingly, QVT Associates GP LLC may be deemed to be the beneficial owner of an aggregate amount of 10,770,554 shares of Common Stock.

Each of the Covered Persons, each of whom is a managing member of QVT Financial GP LLC, expressly disclaims beneficial ownership of the Common Stock reported herein as beneficially owned by the Reporting Persons.

(c) The reported share amounts for QVT Financial LP, QVT Financial GP LLC, QVT Fund LP and QVT Associates GP LLC reflect amounts as of October 19, 2011. The Fund and Quintessence effected the following transactions in the Common Stock during the past 60 days:

• The Fund sold 586,287 shares of Common Stock in the open market on October 17, 2011 at a price of $3.68. Quintessence sold 63,813 shares of Common Stock in the open market on October 17, 2011 at a price of $3.68.

Item 7. Material to Be Filed as Exhibits

Exhibit 1 — Agreement regarding Joint Filing of Schedule 13D

Page 6 of 8 pages

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.

Dated: October 19, 2011

QVT FINANCIAL LP		QVT FUND LP
By: QVT Financial GP LLC, its General Partner		By: QVT Associates GP LLC, its General Partner
By:	/s/ Daniel Gold	By:	/s/ Daniel Gold
	Name: Daniel Gold		Name: Daniel Gold
	Title: Managing Member		Title: Managing Member
By:	/s/ Meg Eisner	By:	/s/ Meg Eisner
	Name: Meg Eisner		Name: Meg Eisner
	Title: Authorized Signatory		Title: Authorized Signatory
QVT FINANCIAL GP LLC		QVT ASSOCIATES GP LLC
By:	/s/ Daniel Gold	By:	/s/ Daniel Gold
	Name: Daniel Gold		Name: Daniel Gold
	Title: Managing Member		Title: Managing Member
By:	/s/ Meg Eisner	By:	/s/ Meg Eisner
	Name: Meg Eisner		Name: Meg Eisner
	Title: Authorized Signatory		Title: Authorized Signatory

Page 7 of 8 pages