SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* MAK CAPITAL ONE LLC (Last) (First) (Middle) 590 MADISON AVENUE, 9TH FLOOR (Street) NEW YORK NY 10022 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol ZYGO CORP [ ZIGO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 03/04/2013
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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	03/04/2013		P		122,202	A	$14.75	556,092	D(1)(2)(3)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* MAK CAPITAL ONE LLC (Last) (First) (Middle) 590 MADISON AVENUE, 9TH FLOOR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* MAK Capital Fund LP (Last) (First) (Middle) 590 MADISON AVENUE, 9TH FLOOR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Kaufman Michael A (Last) (First) (Middle) 590 MADISON AVENUE 9TH FLOOR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* SUSSMAN S DONALD (Last) (First) (Middle) 217 COMMERCIAL STREET 5TH FLOOR (Street) PORTLAND ME 04101 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* MAK-ro Capital Master Fund LP (Last) (First) (Middle) C/O DUNDEE LEEDS MANAGEMENT SERVICES LTD 129 FRONT STREET (Street) HAMILTON D0 HM12 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Reflects the transactions of securities owned directly by MAK-ro Capital Master Fund LP (the "MAK-ro Fund").

2. MAK Capital Fund LP ("MAK Capital Fund") directly owns 3,073,785 shares of common stock. Paloma International L.P. ("Paloma") through its subsidiary, Sunrise Partners Limited Partnership, directly owns 740,183 shares of common stock. MAK Capital One LLC ("MAK Capital One") acts as the investment manager of MAK Capital Fund, MAK-ro Fund and Paloma with respect to the securities reported herein. Michael A. Kaufman is the managing member of MAK Capital One and the controlling person of MAK Capital Fund and MAK-ro Fund. S. Donald Sussman is the controlling person of Paloma.

3. MAK Capital One and Michael A. Kaufman may be deemed to indirectly beneficially own the shares of common stock held by MAK Capital Fund, MAK-ro Fund and Paloma. Mr. Sussman may be deemed to indirectly beneficially own the shares of common stock held by Paloma. For purposes of this Form 4, MAK Capital One, Mr. Kaufman and Mr. Sussman each disclaims beneficial ownership of the shares of common stock owned by MAK Capital Fund, MAK-ro Fund and Paloma, except to the extent of their pecuniary interest therein.

Remarks:

	Michael A. Kaufman, Managing Member of MAK CAPITAL ONE LLC	03/06/2013
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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