Ownership Submission
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
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Herdman Kirk
   2. Issuer Name and Ticker or Trading Symbol
GLOBAL DEFENSE TECHNOLOGY & SYSTEMS, INC. [GTEC] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior VP, Bus. Dev. and Op.
(Last)
(First)
(Middle)
1501 FARM CREDIT DRIVE, SUITE 2300		 3. Date of Earliest Transaction (Month/Day/Year)
03/01/2011
(Street)

MCLEAN, VA 22102-5011		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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

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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
Common Stock Option (right to buy) (1) $ 16.31 03/01/2011(2)   A   20,000   03/01/2012(3) 03/01/2021 Common Stock 20,000 $ 0 20,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Herdman Kirk
1501 FARM CREDIT DRIVE
SUITE 2300
MCLEAN, VA 22102-5011		       Senior VP, Bus. Dev. and Op.  

Signatures

 /s/ Lisa Broome   03/01/2011
**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) On January 5, 2011, in conjunction with the Company's annual equity grants to employees and directors, the Compensation Committee of the GTEC Board tentatively approved the issuance of (1) Company Options to certain executive officers, including the filing person, for the purchase of an aggregate of 39,000 shares of Common Stock and (2) 97,000 restricted shares to certain non-management members of the GTEC Board and the Company's Chief Executive Officer and Chief Financial Officer. Following the meeting, the Compensation Committee sought additional information, including the market for compensation of Chief Executive Officers and Chief Financial Officers of peer companies, final tables containing the related grant information, and input from other directors. Following receipt of this information, the Compensation Committee formally approved the grants on January 28, 2011.
(2) Pursuant to the terms of the Company's Equity Award Grant Policy, all annual equity grants to the Company's employees and directors are effective as of the third trading day following the date that the Company releases its annual financial results. As a result, the grant date for these grants was March 1, 2011.
(3) The option vests in four equal, annual installments beginning on the Date Exercisable.

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