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* Addington Hills Ltd. (Last) (First) (Middle) BAYSIDE EXECUTIVE PARK, BUILDING NO. 1 WEST BAY STREET, P.O. BOX N-4837 (Street) NASSAU, BAHAMAS C5 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol IXIA [ XXIA ]	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) 01/06/2011
	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	01/06/2011		S		50,000	D	$17.0436(1)	11,073,500	D(2)

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* Addington Hills Ltd. (Last) (First) (Middle) BAYSIDE EXECUTIVE PARK, BUILDING NO. 1 WEST BAY STREET, P.O. BOX N-4837 (Street) NASSAU, BAHAMAS C5 (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* Tango Trust (Last) (First) (Middle) BAYSIDE EXECUTIVE PARK, BUILDING NO. 1 WEST BAY STREET, P.O. BOX N-4837 (Street) NASSAU, BAHAMAS C5 (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* PICTET OVERSEAS TRUST CORP LTD (Last) (First) (Middle) BAYSIDE EXECUTIVE PARK, BUILDING NO. 1 WEST BAY STREET, P.O. BOX N-4837 (Street) NASSAU, BAHAMAS C5 (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. This transaction was executed in multiple trades at prices ranging from $16.971 to $17.20. The price reported reflects the weighted average sale price. The Reporting Person has provided to the Issuer and will provide to any shareholder of the Issuer, or to the SEC Staff, upon request, information regarding the number of shares sold at each price within the range.

2. These securities are owned (i) directly by Addington Hills Ltd., (ii) indirectly by The Tango Trust and (iii) indirectly by Pictet Overseas Trust Corporation Limited, as trustees of The Tango Trust under Trust Deed dated 28 October 2009. The Tango Trust owns all of the voting equity interest in Addington Hills Ltd.

Remarks:

	Kirsten Sweeting, on behalf of Nassnom Investments Corp., as a Director of Addington Hills Ltd.	01/07/2011
	Mark Richford, on behalf of Nassnom Investments Corp., as a Director of Addington Hills Ltd.	01/07/2011
	Kirsten Sweeting, on behalf of Nomnass Investments Corp., as a Director of Addington Hills Ltd.	01/07/2011
	Mark Richford, on behalf of Nomnass Investments Corp., as a Director of Addington Hills Ltd.	01/07/2011
	Kimberly Strachan, on behalf of Pictet Overseas Trust Corporation Limited, on behalf of itself and as Trustees of The Tango Trust	01/07/2011
	Mark Richford, on behalf of Pictet Overseas Trust Corporation Limited, on behalf of itself and as Trustees of The Tango Trust	01/07/2011
	** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.