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 *
Global Defense & National Security Holdings LLC
  2. Issuer Name and Ticker or Trading Symbol
STG Group, Inc. [GDEF]
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)
C/O STG GROUP, INC., 11091 SUNSET HILLS ROAD, SUITE 200
3. Date of Earliest Transaction (Month/Day/Year)
11/23/2015
(Street)

RESTON, VA 20190
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
Common Stock (1) 11/23/2015   P   1,030,103 A $ 10.63 3,754,828 D  
Common Stock (2) 11/23/2015   D   445,161 D $ 0 3,309,667 D  
Common Stock (3) 11/23/2015   D   35,000 D $ 0 3,274,667 D  

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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
Convertible Promissory Note $ 10.6 (4) 11/23/2015   J     $ 1,263,263   (4) 11/24/2015(4) Common Stock 119,175 (4) $ 0 (4) 0 (4) D  
Convertible Promissory Note $ 10.6 (4) 11/23/2015   J     $ 1,343,790   (4) 11/24/2015(4) Common Stock 126,772 (4) $ 0 (4) 0 (4) D  
Convertible Promissory Note $ 10.6 (4) 11/23/2015   J     $ 1,250,000   (4) 11/24/2015(4) Common Stock 117,924 (4) $ 0 (4) 0 (4) D  
Convertible Promissory Note $ 10.6 (4) 11/23/2015   J     $ 711,447   (4) 11/24/2015(4) Common Stock 67,117 (4) $ 0 (4) 0 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Global Defense & National Security Holdings LLC
C/O STG GROUP, INC.
11091 SUNSET HILLS ROAD, SUITE 200
RESTON, VA 20190
    X    

Signatures

 /s/ Damian Perl, Manager, Black Marlin Ltd   11/25/2015
**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) Shares acquired pursuant to that certain Amended and Restated Backstop Common Stock Purchase Agreement, dated as of November 23, 2015, by and between Global Defense & National Security Systems, Inc. (the "Company") and Global Defense & National Security Holdings LLC.
(2) Shares forfeited to the Company, pursuant to the Stock Purchase Agreement, dated as of June 8, 2015, by and between the Company, STG Group, Inc., the stockholders of STG Group, Inc. and the other parties thereto (the "Stock Purchase Agreement").
(3) Shares transferred to the stockholders of STG Group, Inc. for no consideration in connection with the closing of the transactions contemplated by the Stock Purchase Agreement.
(4) Following the consummation of the Issuer's initial Business Combination (as defined in the Issuer's Amended and Restated Certificate of Incorporation then in effect) on November 23, 2015, the convertible promissory note became convertible at the option of the holder at the greater of (1) $10.00 per share and (2) $10.60, the 30-day trailing average of the closing price per share. On November 23, 2015, in connection with closing the initial Business Combination and in consideration of the payment by the issuer of the face value of the convertible promissory notes, the outstanding principal due under the convertible promissory notes was repaid and such notes were canceled.

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