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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1. Name and Address of Reporting Person * Carrai Phillip D   2. Issuer Name and Ticker or Trading Symbol KRATOS DEFENSE & SECURITY SOLUTIONS, INC. [KTOS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President, TTS Division (Last) (First) (Middle) 4820 EASTGATE MALL 3. Date of Earliest Transaction (Month/Day/Year) 01/02/2012 (Street) SAN DIEGO, CA 92121 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 01/02/2012   M   3,000 (1) A $ 0 8,189 (5) (6) D   Common Stock 01/02/2012   M   2,000 (2) A $ 0 10,189 (5) (6) D   Common Stock 05/27/2011   G V 3,298 A $ 0 19,394 I by The Carrai Family Trust dated 1/24/2011, Phillip D. Carrai and Angela M. Carrai Trustees

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Restricted Stock Unit

(3)

01/02/2012

M

3,000

(1)

01/02/2020

Common Stock

3,000

$ 0

38,999

D

Restricted Stock Unit

(3)

01/02/2012

M

2,000

(2)

01/02/2019

Common Stock

2,000

$ 0

36,999

D

Restricted Stock Unit

(3)

01/03/2012

A

30,000

(4)

01/03/2022

Common Stock

30,000

$ 0

66,999

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Carrai Phillip D 4820 EASTGATE MALL SAN DIEGO, CA 92121			President, TTS Division

Signatures

Phillip D. Carrai, by Eva Yee, Attorney-In-Fact		01/04/2012
**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)	Common Stock issued to reporting person pursuant to settlement of vested shares under Restricted Stock Unit grant dated January 2, 2010, where 15,000 Restricted Stock Units granted vest in five equal installments annually beginning on January 2, 2011.
(2)	Common Stock issued to reporting person pursuant to settlement of vested shares under Restricted Stock Unit grant dated January 2, 2009, where 10,000 Restricted Stock Units granted vest in five equal installments annually beginning on January 2, 2010.
(3)	Each restricted stock unit represents a contingent right to receive one share of Issuer's common stock.
(4)	The restricted stock units vest 100% five (5) years from the date of grant, unless earlier vested upon a change in control pursuant to the terms of the restricted stock unit agreement.
(5)	Includes 4,037 shares held in Issuer 401(k) Plan and 1,152 shares purchased through Issuer's Employee Stock Purchase Plan.
(6)	Excludes the gross number of shares reported on Form 3 dated January 10, 2011, which were transferred, net of shares tendered for payment of minimum tax liability, to The Carrai Family Trust dated 1/24/2001, Phillip D. Carrai and Angela M. Carrai Trustees.

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