FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Rock Stacey G 2. Date of Event Requiring Statement (Month/Day/Year) 02/27/2019 3. Issuer Name and Ticker or Trading Symbol KRATOS DEFENSE & SECURITY SOLUTIONS, INC. [KTOS] (Last) (First) (Middle) 10680 TREENA STREET, SUITE 600 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President, KTT Division 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) SAN DIEGO, CA 92131 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 27,870 (1) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units (2)	  (3)	  (3)	Common Stock	5,000	$ 0	D	Â
Restricted Stock Units (2)	  (4)	  (4)	Common Stock	15,000	$ 0	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Rock Stacey G 10680 TREENA STREET, SUITE 600 SAN DIEGO, CA 92131	Â	Â	  President, KTT Division	Â

Signatures

Stacey G. Rock, by Eva Yee, Attorney-In-Fact		03/01/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Includes approximately 9,232 shares held through Issuer's 401(k) Plan.
(2)	Each restricted stock unit (RSU) represents a contingent right to receive one share of Issuer's common stock.
(3)	Reporting Person was granted 5,000 RSUs on January 4, 2018, which vest 100% on January 4, 2023, unless earlier vested or forfeited pursuant to the terms of the RSU agreement.
(4)	Reporting Person was granted 15,000 RSUs on February 27, 2019, which vest 100% on February 27, 2024, unless earlier vested or forfeited pursuant to the terms of the RSU agreement.

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