Multi-Strategy Master Fund Polar Form 4 Global Defense & National Security Systems / Pole Capital Master Fund North ownership change

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

X

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^*

Polar Securities Inc.

(Last) (First) (Middle)

401 BAY STREET

SUITE 1900, P.O. BOX 19

(Street)

TORONTO A6 M5H 2Y4

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Global Defense & National Security Systems, Inc. [ GDEF ]

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)
06/09/2015

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	06/09/2015		S		175,000	D	$10.55	953,686	I	See footnote(1)

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^*

Polar Securities Inc.

(Last) (First) (Middle)

401 BAY STREET

SUITE 1900, P.O. BOX 19

(Street)

TORONTO A6 M5H 2Y4

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

North Pole Capital Master Fund

(Last) (First) (Middle)

C/O POLAR SECURITIES INC., 401 BAY ST.

SUITE 1900, PO BOX 19

(Street)

TORONTO A6 M5H 2Y4

(City) (State) (Zip)

Explanation of Responses:

1. Polar Securities Inc. ("PSI") serves as investment manager to North Pole Capital Master Fund, a Cayman Islands exempted company ("NPM", together with PSI, the "Reporting Persons") and has investment discretion with respect to the securities reported herein which are held by NPM. The Reporting Persons disclaim beneficial ownership of such securities, and this report shall not be deemed an admission that any Reporting Person is the beneficial owners of the securities for the purpose of Section 16 or for any other purpose, except to the extent of the Reporting Persons' pecuniary interest therein.

	POLAR SECURITIES INC., for itself and as investment manager to NORTH POLE CAPITAL MASTER FUND /s/ Paul Sabourin, Chief Investment Officer	06/11/2015
	** 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.