Altimmune – SEC Filing

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G/A

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

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)

Healthcare Acquisition Corp.

(Name of Issuer)

common stock, par value $0.0001

(Title of Class of Securities)

42224H104

(CUSIP Number)

December 31, 2006

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

þ Rule 13d-1(c)

o Rule 13d-1(d)

* 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 the disclosures provided in a prior cover page.

The information required in 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.		42224H104


1	NAMES OF REPORTING PERSONS: Sapling, LLC

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) o

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Delaware

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			697,715

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			697,715

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	697,715

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9):

	6.0%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	OO


CUSIP No.		42224H104


1	NAMES OF REPORTING PERSONS: Fir Tree Recovery Master Fund, L.P.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) o

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Cayman Islands

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			325,115

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			325,115

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	325,115

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9):

	2.8%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	PN


CUSIP No.		42224H104


1	NAMES OF REPORTING PERSONS: Fir Tree, Inc.

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) o

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	New York

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			1,022,830

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			1,022,830

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	1,022,830

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9):

	8.8%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	CO

SCHEDULE 13G/A

This Amendment No. 1 to Schedule 13G (the “Schedule 13G”) is being filed on behalf of Sapling, LLC, a Delaware limited liability company (“Sapling”), Fir Tree Recovery Master Fund, L.P., a Cayman Islands exempted limited partnership (“Fir Tree Recovery”) and Fir Tree, Inc., a New York corporation (“Fir Tree”), relating to common stock (the “Common Stock”) of Healthcare Acquisition Corp., a Delaware corporation (the “Issuer”), purchased by Sapling and Fir Tree Recovery. Fir Tree Value Master Fund, LP, a Cayman Islands exempted limited partnership (“Fir Tree Value”), is the sole member of Sapling, and Fir Tree is the investment manager of both Sapling and Fir Tree Recovery.

Item 1(a) Name of Issuer.

Healthcare Acquisition Corp.

Item 1(b) Address of Issuer’s Principal Executive Offices.

2116 Financial Center
666 Walnut Street
Des Moines, Iowa 50309

Item 2(a) Name of Person Filing.

Item 2(b) Address of Principal Business Office.

Item 2(c) Place of Organization.

Fir Tree, Inc.
505 Fifth Avenue
23^rd Floor
New York, New York 10017
A New York corporation

Sapling, LLC
505 Fifth Avenue
23^rd Floor
New York, New York 10017
A Delaware limited liability company

Fir Tree Recovery Master Fund, L.P.
c/o Admiral Administration Ltd.
Admiral Financial Center, 5th Floor
90 Fort Street, Box 32021 SMB
Grand Cayman, Cayman Islands
A Cayman Islands exempted limited partnership

Fir Tree, Inc. is the investment manager for each of Sapling and Fir Tree Recovery and has been granted investment discretion over portfolio investments, including the shares of Common Stock (as defined below), held by each of them.

Item 2(d) Title of Class of Securities.

Common stock, par value $0.0001 (the “Common Stock”)

Item 2(e) CUSIP Number.

42224H104

Item 3 Reporting Person.

The person filing is not listed in Items 3(a) through 3(j).

Item 4 Ownership.

	(a)		Sapling and Fir Tree Recovery are the beneficial owners of 697,715 shares of Common Stock and 325,115 shares of Common Stock, respectively. Fir Tree may be deemed to beneficially own the shares of Common Stock held by Sapling and Fir Tree Recovery as a result of being the investment manager of Sapling and Fir Tree Recovery.

	(b)		Sapling and Fir Tree Recovery are the beneficial owners of 6.0% and 2.8%, respectively, of the outstanding shares of Common Stock. Collectively, the Reporting Persons beneficially own 1,022,830 shares of Common Stock which represent 8.8% of the shares of Common Stock outstanding. These percentages are determined by dividing the number of shares beneficially held by 11,650,000, the number of shares of Common Stock issued and outstanding as of November 14, 2006, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on November 14, 2006.

	(c)		Sapling may direct the vote and disposition of 697,715 shares of Common Stock. Fir Tree Recovery may direct the vote and disposition of 325,115 shares of Common Stock. Fir Tree has been granted investment discretion over the shares of Common Stock held by Sapling and Recovery.

Item 5 Ownership of Five Percent or Less of a Class.

Inapplicable.

Item 6 Ownership of More Than Five Percent on Behalf of Another Person.

Fir Tree Value, as the sole member of Sapling, has the right to receive dividends from and the proceeds from the sale of the Common Stock.


Item 7		Identification and Classification of the Subsidiary which Acquired the Security Being Reported On by the Parent Holding Company.

Inapplicable.

Item 8 Identification and Classification of Members of the Group.

Inapplicable.

Item 9 Notice of Dissolution of Group.

Inapplicable.

Item 10 Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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.

Date: February 14, 2007


		SAPLING, LLC

		By:		FIR TREE, INC., its Manager

				By: /s/ Jeffrey Tannenbaum

				Name: Jeffrey Tannenbaum
				Title: President

		FIR TREE RECOVERY MASTER FUND, L.P.

		By:		FIR TREE, INC., its Manager

				By: /s/ Jeffrey Tannenbaum

				Name: Jeffrey Tannenbaum
				Title: President

		FIR TREE, INC.



				By: /s/ Jeffrey Tannenbaum

				Name: Jeffrey Tannenbaum
				Title: President

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EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including any and all amendments thereto) with respect to the Common Stock of Healthcare Acquisition Corp., a Delaware corporation, and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filings.

The undersigned further agree that each party hereto is responsible for the timely filing of such Statement on Schedule 13G and any amendments thereto, and for the accuracy and completeness of the information concerning such party contained therein; provided, however, that no party is responsible for the accuracy or completeness of the information concerning any other party, unless such party knows or has reason to believe that such information is inaccurate.

This Joint Filing Agreement may be signed in counterparts with the same effect as if the signature on each counterpart were upon the same instrument.

IN WITNESS WHEREOF, the undersigned have executed this Agreement as of February 14, 2007.


		SAPLING, LLC

		By:		FIR TREE, INC., its Manager

				By: /s/ Jeffrey Tannenbaum

				Name: Jeffrey Tannenbaum
				Title: President

		FIR TREE RECOVERY MASTER FUND, L.P.

		By:		FIR TREE, INC., its Manager

				By: /s/ Jeffrey Tannenbaum

				Name: Jeffrey Tannenbaum
				Title: President

		FIR TREE, INC.

		By: /s/ Jeffrey Tannenbaum

		Name: Jeffrey Tannenbaum
		Title: President