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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * CARANO BANDEL L   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) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 525 UNIVERSITY AVENUE, SUITE 1300 3. Date of Earliest Transaction (Month/Day/Year) 05/14/2012 (Street) PALO ALTO, CA 94301 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 05/14/2012   P   11,000,000 A $ 5 11,825,600 (1) (2) I SEE FOOTNOTES (1) (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CARANO BANDEL L 525 UNIVERSITY AVENUE SUITE 1300 PALO ALTO, CA 94301	X

Signatures

/s/Bandel L. Carano		05/14/2012
**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)	The 11,825,600 shares of Common Stock are directly owned as follows: (i) 11,000,000 shares directly owned by Oak Investment Partners XIII, Limited Partnership ("Oak XIII"). These shares were purchased pursuant to a public offering of the Issuer that closed on May 14, 2012. (ii) 267,786 shares directly owned by Oak Investment Partners IX, Limited Partnership ("Oak IX"). (iii) 2,853 shares directly owned by Oak IX Affiliates Fund, Limited Partnership ("Oak IX Affiliates"). (iv) 6,427 shares directly owned by Oak IX Affiliates Fund-A, Limited Partnership ("Oak IX Affiliates-A"). (v) 539,618 shares directly owned by Oak Investment Partners X, Limited Partnership ("Oak X"). (vi) 8,661 shares directly owned by Oak X Affiliates Fund, Limited Partnership ("Oak X Affiliates" and together with Oak XIII, Oak IX, Oak IX Affiliates, Oak IX Affiliates-A, and Oak X, the "Oak Funds"). (See Footnote 2 for continuation.)
(2)	Continuation of Footnote 1 - (vii) 255 shares directly owned by Bandel L. Carano, a Director of Kratos Defense & Security Solutions, Inc. No other reporting person has any pecuniary interest in these shares.
(3)	Mr. Carano a Managing Member of (i) Oak Associates XIII, LLC, the General Partner of Oak XIII, (ii) Oak Associates IX, LLC, the General Partner of Oak IX, (iii) Oak IX Affiliates, LLC, the General Partner of each of Oak IX Affiliates and Oak IX Affiliates-A, (iv) Oak Associates X, LLC, the General Partner of Oak X, and (v) Oak X Affiliates, LLC, the General Partner of Oak X Affiliates.
Remarks: Mr. Carano is reporting the purchase of 11,000,000 shares of Common Stock by Oak XIII together with the holdings of the other Oak Funds because they may be deemed to be included in a "group" with Mr. Carano.  Mr. Carano disclaims beneficial ownership of any securities (except to the extent of his pecuniary interest in such securities) other than any securities reported herein as being directly owned by him, and this report shall not be deemed an admission that Mr. Carano is the beneficial owner of any such securities for purposes of Section 16 or for any other purpose. Bandel Carano is a Director of the Issuer as well as the Managing Member of the General Partners of the Oak Funds as disclosed in footnote 2 above.  The Oak Funds, and their respective General Partners, are concurrently filing a Form 3 to report the purchase of 11,000,000 shares of Common Stock by Oak XIII.  The Oak Funds and Mr. Carano reserve the right to consolidate the filings of the Oak Funds and Mr. Carano in the future.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.