FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * Skystone Advisors LLC   2. Issuer Name and Ticker or Trading Symbol HARVARD BIOSCIENCE INC [HBIO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) TWO INTERNATIONAL PLACE, SUITE 1800,  3. Date of Earliest Transaction (Month/Day/Year) 11/29/2006 (Street) BOSTON, MA 02110 4. If Amendment, Date Original Filed(Month/Day/Year) 12/01/2006 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 11/29/2006   P   4,106 A $ 4.3029 4,423,992 I see footnote 2 (2) Common Stock 11/30/2006   P   31,097 (1) A $ 4.5131 4,455,089 (1) I see footnote 2 (2) Common Stock 12/01/2006   P   4,579 A $ 4.5995 4,459,668 (1) I see footnote 2 (2) Common Stock 12/01/2006   P   7,035 A $ 4.6389 4,466,703 (1) I see footnote 2 (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Skystone Advisors LLC TWO INTERNATIONAL PLACE, SUITE 1800 BOSTON, MA 02110		X
Nelson Kerry C/O SKYSTONE ADVISORS LLC TWO INTERNATIONAL PLACE, SUITE 1800 BOSTON, MA 02110		X

Signatures

/s/ Skystone Advisors LLC by Kerry Nelson, Managing Member		12/05/2006
**Signature of Reporting Person		Date
/s/ Kerry Nelson		12/05/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This Form 4/A is being filed for the purpose of reporting the purchase of shares reported herein as acquired on November 30, 2006, and to accurately report the amount of securities beneficially owned following subsequent transactions reported herein. In a Form 4 filed on December 1, 2006, such purchase of shares on November 30, 2006 was inadvertently omitted.
(2)	Shares reported herein represent shares held by HSO Limited Partnership and HSE Master Fund Limited Partnership. Skystone Advisors LLC is the investment member of the general partner of HSO Limited Partnership and the general partner of HSE Master Fund Limited Partnership. Ms. Nelson is the managing member of Skystone Advisors LLC. Each of Ms. Nelson and Skystone Advisors LLC disclaims beneficial ownership of the shares reported herein, except to the extent of its or her pecuniary interest therein, and the inclusion of the shares reported herein shall not be deemed an admission of beneficial ownership of such shares for purposes of Section 16 or for any other purpose.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.