KTOS / Kratos Defense & Security Solutions, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Kratos Defense & Security Solutions, Inc.
US ˙ NasdaqGS ˙ US50077B2079

Mga Batayang Estadistika
LEI 5493000EKBN0UY1F3F88
CIK 1069258
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Kratos Defense & Security Solutions, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 7, 2025 EX-99.1

Kratos Reports Second Quarter 2025 Financial Results Second Quarter 2025 Revenues of $351.5 Million Reflect 17.1 Percent Growth and 15.2 Percent Organic Growth Over Second Quarter 2024 Revenues of $300.1 Million Second Quarter 2025 Consolidated Book

Exhibit 99.1 Press Contact: Claire Burghoff [email protected] Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2025 Financial Results Second Quarter 2025 Revenues of $351.5 Million Reflect 17.1 Percent Growth and 15.2 Percent Organic Growth Over Second Quarter 2024 Revenues of $300.1 Million Second Quarter 2025 Consolidated Book to Bill Ra

August 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 29, 2025 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 29, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE & SECUR

August 7, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2025 Kratos Defense & Se

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2025 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

June 27, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward I

June 27, 2025 EX-1.1

Underwriting Agreement, dated June 25, 2025, by and between Kratos Defense & Security Solutions, Inc. and Robert W. Baird & Co. Incorporated, as representative of the several underwriters named therein.

Exhibit 1.1 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 12,987,013 Shares of Common Stock Underwriting Agreement June 25, 2025 Robert W. Baird & Co. Incorporated As Representative of the several Underwriters listed in Schedule 1 hereto c/o Robert W. Baird & Co. Incorporated 777 E. Wisconsin Avenue Milwaukee, Wisconsin 53202 Ladies and Gentlemen: Kratos Defense & Security Solutions, Inc., a Delaware

June 27, 2025 EX-99.2

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.2 For Immediate Release Press Contact: Claire Burghoff [email protected] Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA, June 25, 2025 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (NASDAQ: KTOS), a Technology Company in the Defense, National Security an

June 27, 2025 424B5

12,987,013 Shares Kratos Defense & Security Solutions, Inc. Common Stock

Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-277222 Prospectus supplement (to prospectus dated February 21, 2024) 12,987,013 Shares Kratos Defense & Security Solutions, Inc. Common Stock We are offering 12,987,013 shares of our common stock, par value $0.001 per share, pursuant to this prospectus supplement and the accompanying prospectus. Our common stock is traded on the Nasda

June 27, 2025 EX-99.1

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.1 For Immediate Release Press Contact: Claire Burghoff [email protected] Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA June 25, 2025 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (NASDAQ: KTOS), a Technology Company in the Defense, National

June 27, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 25, 2025 KRATOS DEFENSE & SECU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 25, 2025 KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

June 25, 2025 424B5

Subject to completion, dated June 25, 2025

Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-277222 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supplement and the accompanying prosp

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 1 Chisholm Trail, Round Rock, TX 92131 (Address of Pri

May 30, 2025 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2024 to December 31, 2024. The Rule was adopted by the SEC to

May 19, 2025 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 14, 2025 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 30, 2025 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE & SECU

May 7, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2025 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

May 7, 2025 EX-99.1

Kratos Reports First Quarter 2025 Financial Results First Quarter 2025 Revenues of $302.6 Million Reflect 9.2 Percent Growth and 7.4 Percent Organic Growth Over First Quarter 2024 Revenues of $277.2 Million First Quarter 2025 Consolidated Book to Bil

Exhibit 99.1 Press Contact: Claire Burghoff [email protected] Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter 2025 Financial Results First Quarter 2025 Revenues of $302.6 Million Reflect 9.2 Percent Growth and 7.4 Percent Organic Growth Over First Quarter 2024 Revenues of $277.2 Million First Quarter 2025 Consolidated Book to Bill Ratio of

April 4, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Definitive Proxy State

April 4, 2025 DEFA14A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

February 26, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 26, 2025 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 26, 2025 EX-99.1

Kratos Reports Fourth Quarter and Full Year 2024 Financial Results Full Year 2024 Revenues of $1.136 Billion Reflect 9.6 Percent Growth and 9.1 Percent Organic Growth, Respectively, Over Full Year 2023 Revenues of $1.037 Billion Full Year 2024 Unmann

Exhibit 99.1 Press Contact: Claire Burghoff [email protected] Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Full Year 2024 Financial Results Full Year 2024 Revenues of $1.136 Billion Reflect 9.6 Percent Growth and 9.1 Percent Organic Growth, Respectively, Over Full Year 2023 Revenues of $1.037 Billion Full Year 2024 Unmanned Systems

February 26, 2025 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries 5-D Systems, Inc. Texas BSC Partners, LLC New York Consolidated Turbine Specialists, LLC Oklahoma Consolidated Turbine Specialists Canada, Ltd. Canada Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware Digital Fusion Solutions, Inc. Florida Digital Fusion, Inc. Delaware DTI Associates, Inc. Virginia Florida Turbine PR, LLC Puerto Rico Florida Tur

February 26, 2025 EX-19.1

Avoidance of Insider Trading and Procedures for Section 16 Compliance

Exhibit 19.1 GLOBAL POLICY MANUAL EFFECTIVE DATE: 6/8/2020 Page: 1 of #NUMPAGES# TITLE: Avoidance of Insider Trading and Procedures for Section 16 Compliance GPM No. LD-002 OLD REV 7/14/2020 NEW REV 2/27/2023 Department / Author, Title Law Department Date: 2/27/2023 Approval, Title Kratos General Counsel Date: 2/27/2023 1.0SCOPE AND PURPOSE This Avoidance of Insider Trading and Procedures for Sect

February 26, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 29, 2024 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 29, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 7, 2025 424B3

1,095,674 Shares Kratos Defense & Security Solutions, Inc. Common Stock

 Filed Pursuant to Rule 424(b)(3)  Registration No. 333-277222 PROSPECTUS SUPPLEMENT (to Prospectus dated February 21, 2024) 1,095,674 Shares Kratos Defense & Security Solutions, Inc. Common Stock This prospectus supplement supplements information contained in that certain prospectus dated February 21, 2024 filed as part of that certain registration statement on Form S-3 filed with the U.S. Securi

February 7, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward I

November 7, 2024 EX-99.1

Kratos Reports Third Quarter 2024 Financial Results Third Quarter 2024 Revenues of $275.9 Million Compared with Third Quarter 2023 Revenues of $274.6 Million Third Quarter 2024 Unmanned Systems Revenues of $64.2 Million Compared with Third Quarter 20

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter 2024 Financial Results Third Quarter 2024 Revenues of $275.9 Million Compared with Third Quarter 2023 Revenues of $274.6 Million Third Quarter 2024 Unmanned Systems Revenues of $64.2 Million Compared with Third Quarter 2023 Revenues of $56.7 Milli

November 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 29, 2024 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 29, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE &

November 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 7, 2024 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

October 18, 2024 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc. / STATE STREET CORP Passive Investment

SC 13G/A 1 KratosDefandSecSolInc.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* KRATOS DEFENSE & SECURITY SOLUTIONS INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 50077B207 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to de

October 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 2, 2024 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SEC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 2, 2024 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

August 7, 2024 EX-99.1

Kratos Reports Second Quarter 2024 Financial Results Second Quarter 2024 Revenues of $300.1 Million Increased 16.8 Percent over Second Quarter 2023 Revenues of $256.9 Million, including 16.7 Percent Organic Growth Second Quarter 2024 Unmanned Systems

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2024 Financial Results Second Quarter 2024 Revenues of $300.1 Million Increased 16.8 Percent over Second Quarter 2023 Revenues of $256.9 Million, including 16.7 Percent Organic Growth Second Quarter 2024 Unmanned Systems Revenues of $85.8 Million

August 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE & SECUR

August 7, 2024 EX-10.1

Equity Purchase Agreement, date as of June 21, 2024, by and among Kratos Defense & Security Solutions, Inc., Joseph Brostmeyer (“JB”), Shirley Brostmeyer (“SB”), and certain trusts established by JB, SB and members of their immediate family, as Sellers.

Exhibit 10.1 Execution Version EQUITY PURCHASE AGREEMENT THIS EQUITY PURCHASE AGREEMENT (this “Agreement”) is made and entered into as of June 21, 2024 (the “Effective Date”), by and among Kratos Defense & Security Solutions, Inc., a Delaware corporation (the “Purchaser”), Pegasus Residual, LLC, a Delaware limited liability company (the “Seller”), Shirley Brostmeyer, an individual (“SB”), Joseph B

August 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2024 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

May 31, 2024 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2023 to December 31, 2023. The Rule was adopted by the SEC to

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 1 Chisholm Trail, Round Rock, TX 92131 (Address of Pri

May 24, 2024 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 21, 2024 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 24, 2024 EX-3.1

Third Amended and Restated Bylaws of Kratos Defense & Security Solutions, Inc., as amended.

Exhibit 3.1 THIRD AMENDED AND RESTATED BYLAWS OF KRATOS DEFENSE & SECURITY SOLUTIONS, INC. a Delaware corporation as amended as of May 21, 2024 TABLE OF CONTENTS Page ARTICLE 1 Offices. 1 Section 1.1 Registered Office. 1 Section 1.2 Other Offices. 1 ARTICLE 2 Stockholders’ Meetings. 1 Section 2.1 Place of Meetings. 1 Section 2.2 Annual Meetings. 2 Section 2.3 Special Meetings. 2 Section 2.4 Notice

May 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE & SECU

May 7, 2024 EX-99.1

Kratos Reports First Quarter 2024 Financial Results First Quarter 2024 Revenues of $277.2 Million Increased 19.6 Percent over First Quarter 2023 Revenues of $231.8 Million, including 19.5 Percent Organic Growth First Quarter 2024 Unmanned Systems Rev

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter 2024 Financial Results First Quarter 2024 Revenues of $277.2 Million Increased 19.6 Percent over First Quarter 2023 Revenues of $231.8 Million, including 19.5 Percent Organic Growth First Quarter 2024 Unmanned Systems Revenues of $59.4 Million Inc

May 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2024 Kratos Defense & Secur

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2024 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

April 11, 2024 DEFA14A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

April 11, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Definitive Proxy State

April 3, 2024 EX-99.1

Investor Information: 877-934-4687 [email protected] Kratos Announces New Director as Part of Ongoing Board Refresh and Augmentation Process Brigadier General (Retired) Bobbi Doorenbos to Join the Kratos Board of Directors

Exhibit 99.1 Investor Information: 877-934-4687 [email protected] Kratos Announces New Director as Part of Ongoing Board Refresh and Augmentation Process Brigadier General (Retired) Bobbi Doorenbos to Join the Kratos Board of Directors SAN DIEGO, April 3, 2024 (GLOBE NEWSWIRE) - Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a Technology Company in the Defense, National Security

April 3, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 28, 2024 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 28, 2024 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

February 27, 2024 EX-99.2

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.2 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA, February 22, 2024 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (NASDAQ: KTOS), a Technology Company in the Defense, National Security and Global Mar

February 27, 2024 EX-99.1

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.1 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA February 21, 2024 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (NASDAQ: KTOS), a Technology Company in the Defense, National Security and

February 27, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2024 KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

February 27, 2024 EX-FILING FEES

Filing Fee Table

Item 107 Calculation of Filing Fee Tables 424(b)(5) (Form Type) Kratos Defense & Security Solutions, Inc.

February 27, 2024 POSASR

As filed with the Securities and Exchange Commission on February 27, 2024

As filed with the Securities and Exchange Commission on February 27, 2024 Registration No.

February 27, 2024 EX-1.1

Underwriting Agreement, dated February 22, 2024, by and between Kratos Defense & Security Solutions, Inc. and Robert W. Baird & Co. Incorporated, as representative of the several underwriters named therein.

Exhibit 1.1 Execution Version KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 16,666,667 Shares of Common Stock Underwriting Agreement February 22, 2024 Robert W. Baird & Co. Incorporated As Representative of the several Underwriters listed in Schedule 1 hereto c/o Robert W. Baird & Co. Incorporated 777 E. Wisconsin Avenue Milwaukee, Wisconsin 53202 Ladies and Gentlemen: Kratos Defense & Security Soluti

February 23, 2024 EX-FILING FEES

Calculation of Filing Fee Tables 424(b)(5) (Form Type) Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(5) (Form Type) Kratos Defense & Security Solutions, Inc.

February 23, 2024 424B5

16,666,667 Shares Kratos Defense & Security Solutions, Inc. Common Stock

Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-277222 Prospectus supplement (to prospectus dated February 21, 2024) 16,666,667 Shares Kratos Defense & Security Solutions, Inc. Common Stock We are offering 16,666,667 shares of our common stock, par value $0.001 per share, pursuant to this prospectus supplement and the accompanying prospectus. Our common stock is traded on the Nasda

February 21, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table(1) Form S-3 Registration Statement under the Securities Act of 1933 (Form Type) Kratos Defense & Security Solutions, Inc.

February 21, 2024 424B5

Subject to completion, dated February 21, 2024

Filed Pursuant to Rule 424(b)(5) Registration Statement No. 333-277222 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus supplement and the accompanying prosp

February 21, 2024 S-3ASR

As filed with the Securities and Exchange Commission on February 21, 2024

As filed with the Securities and Exchange Commission on February 21, 2024 Registration No.

February 21, 2024 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 26, 2023 ☐ TRANSITION REPORT PURSUANT T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 26, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRATOS DEFENSE & SE

February 13, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 13, 2024 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 13, 2024 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01299-kratosdefensesecurit.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 4)* Name of issuer: Kratos Defense & Security Solutions Inc Title of Class of Securities: Common Stock CUSIP Number: 50077B207 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the ap

February 13, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 13, 2024 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries 5-D Systems, Inc. Texas BSC Partners, LLC New York Consolidated Turbine Specialists, LLC Oklahoma Consolidated Turbine Specialists Canada, Ltd. Canada CTT Inc. California Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware Digital Fusion Solutions, Inc. Florida Digital Fusion, Inc. Delaware DTI Associates, Inc. Virginia Florida Turbine PR, LLC Pue

February 13, 2024 EX-97

Kratos Defense & Security Solutions, Inc. Compensation Recovery Policy

Exhibit 97 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. POLICY FOR RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION Kratos Defense & Security Solutions, Inc. (the “Company”) has adopted this Policy for Recovery of Erroneously Awarded Compensation (the “Policy”), effective as of October 2, 2023 (the “Effective Date”). Capitalized terms used in this Policy but not otherwise defined herein are defined in Se

February 13, 2024 EX-10.22

Employment Agreement, effective January 1, 2023 by and between Kratos Defense and Security Systems, Inc. and Phil Carrai.

Exhibit 10.22 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is entered into by and between Kratos Defense & Security Solutions, Inc., a Delaware corporation (“Company”) and Phil Carrai, an individual (“Executive”), effective as of January 1, 2023 (“Effective Date”). Certain terms used in this Agreement denoted by initial capital letters are defined in Section 17, to the extent not d

February 13, 2024 EX-99.1

Kratos Reports Fourth Quarter and Full Year 2023 Financial Results Full Year 2023 Revenues of $1.037 Billion Reflect 15.5 Percent Growth and 12.6 Percent Organic Growth, Respectively, Over Full Year 2022 Revenues of $898.3 Million Fourth Quarter Reve

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Full Year 2023 Financial Results Full Year 2023 Revenues of $1.037 Billion Reflect 15.5 Percent Growth and 12.6 Percent Organic Growth, Respectively, Over Full Year 2022 Revenues of $898.3 Million Fourth Quarter Revenues of $273.8 Million Ref

February 13, 2024 EX-10.23

by and between Kratos Defense and Security Systems, Inc. and

Exhibit 10.23 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is entered into by and between Kratos Defense & Security Solutions, Inc., a Delaware corporation (“Company”), and Steven Fendley, an individual (“Executive”), effective as of January 1, 2024 (“Effective Date”). Certain terms used in this Agreement denoted by initial capital letters are defined in Section 17, to the extent n

November 2, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 2, 2023 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

November 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 2, 2023 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

November 2, 2023 EX-99.1

Kratos Reports Third Quarter 2023 Financial Results Third Quarter 2023 Revenues of $274.6 Million Reflect 20.1 Percent Organic Growth Over Third Quarter 2022 Revenues of $228.6 Million Third Quarter 2023 Revenues Reflect 22.0 Percent Organic Revenue

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter 2023 Financial Results Third Quarter 2023 Revenues of $274.6 Million Reflect 20.1 Percent Organic Growth Over Third Quarter 2022 Revenues of $228.6 Million Third Quarter 2023 Revenues Reflect 22.0 Percent Organic Revenue Growth in Kratos Governmen

November 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended October 1, 2023 ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended October 1, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KR

November 2, 2023 EX-99.1

Kratos Announces New Directors as Part of Ongoing Board Refresh and Augmentation Process and Thanks Retiring Directors for Their Service to the Company and its National Security Focused Mission

Exhibit 99.1 Investor Information: 877-934-4687 [email protected] Kratos Announces New Directors as Part of Ongoing Board Refresh and Augmentation Process and Thanks Retiring Directors for Their Service to the Company and its National Security Focused Mission SAN DIEGO, November 2, 2023 (GLOBE NEWSWIRE) - Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a Technology Company in the

October 5, 2023 8-K

Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 3, 2023 KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

October 4, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE Form S-3 (Form Type) Kratos Defense & Security Solutions, Inc.

October 4, 2023 S-3ASR

As filed with the Securities and Exchange Commission on October 4, 2023

As filed with the Securities and Exchange Commission on October 4, 2023 Registration No.

August 3, 2023 EX-99.1

Kratos Reports Second Quarter 2023 Financial Results Second Quarter 2023 Revenues of $256.9 Million Increased 14.6 Percent Over Second Quarter 2022 Revenues of $224.2 Million, Including 17.1 Percent Organic Growth in Kratos Government Solutions Segme

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2023 Financial Results Second Quarter 2023 Revenues of $256.9 Million Increased 14.6 Percent Over Second Quarter 2022 Revenues of $224.2 Million, Including 17.1 Percent Organic Growth in Kratos Government Solutions Segment Second Quarter 2023 and

August 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 25, 2023 ☐ TRANSITION REPORT PURSUANT TO S

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 25, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRAT

August 3, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2023 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

May 31, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 1 Chisholm Trail, Round Rock, TX 92131 (Address of Pri

May 31, 2023 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2022 to December 31, 2022. The Rule was adopted by the SEC to

May 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 24, 2023 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 24, 2023 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 24, 2023 EX-99.2

Kratos Defense & Security Solutions, Inc. 2023 Employee Stock Purchase Plan

Exhibit 99.2 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 2023 EMPLOYEE STOCK PURCHASE PLAN ARTICLE I PURPOSE The purpose of this Plan is to assist Eligible Employees of the Company and its Designated Subsidiaries in acquiring a stock ownership interest in the Company. The Plan consists of two components: (i) the Section 423 Component and (ii) the Non-Section 423 Component. The Section 423 Component

May 24, 2023 S-8

As filed with the Securities and Exchange Commission on May 24 , 2023

As filed with the Securities and Exchange Commission on May 24 , 2023 Registration No.

May 24, 2023 EX-99.1

Kratos Defense & Security Solutions, Inc. 2023 Equity Incentive Plan

Exhibit 99.1 KRATOS DEFENSE & SECURITY SOLUTIONS, INCORPORATED 2023 EQUITY INCENTIVE PLAN 1. General. (a) Successor to Prior Plans. This Kratos Defense & Security Solutions, Incorporated 2023 Equity Incentive Plan (the “Plan”), is the successor to the Amended and Restated Kratos Defense & Security Solutions, Incorporated 2014 Equity Incentive Plan (the “2014 Plan”) and the other Prior Plans. Follo

May 24, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) Kratos Defense & Security Solutions, Inc.

May 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 26, 2023 ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 26, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRA

May 3, 2023 EX-99.1

Kratos Reports First Quarter 2023 Financial Results First Quarter 2023 Revenues of $231.8 Million Increased 18.1 Percent over First Quarter 2022 Revenues of $196.2 Million, including 12.0 Percent Organic Growth First Quarter 2023 and Last Twelve Mont

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter 2023 Financial Results First Quarter 2023 Revenues of $231.8 Million Increased 18.1 Percent over First Quarter 2022 Revenues of $196.2 Million, including 12.0 Percent Organic Growth First Quarter 2023 and Last Twelve Months Ended March 26, 2023 Co

May 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2023 Kratos Defense & Secur

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 3, 2023 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

April 14, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Definitive Proxy State

April 14, 2023 DEFA14A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

February 23, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 25, 2022 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 25, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 23, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 23, 2023 Kratos Defense &

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 23, 2023 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 23, 2023 EX-99.1

Kratos Reports Fourth Quarter and Fiscal 2022 Financial Results Fiscal 2022 Revenues of $898.3 Million and Fourth Quarter 2022 Revenues of $249.3 Million Increased 10.7 Percent and 17.8 Percent over Fiscal Year and Fourth Quarter 2021 Revenues, Respe

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Fiscal 2022 Financial Results Fiscal 2022 Revenues of $898.3 Million and Fourth Quarter 2022 Revenues of $249.3 Million Increased 10.7 Percent and 17.8 Percent over Fiscal Year and Fourth Quarter 2021 Revenues, Respectively Fourth Quarter 202

February 23, 2023 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries 5-D Systems, Inc. Texas BSC Partners, LLC New York Consolidated Turbine Specialists, LLC Oklahoma Consolidated Turbine Specialists Canada, Ltd. Canada CTT Inc. California Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware Digital Fusion Solutions, Inc. Florida Digital Fusion, Inc. Delaware DTI Associates, Inc. Virginia Florida Turbine PR, LLC Pue

February 10, 2023 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc / ARK Investment Management LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm235555d22sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1)* Kratos Defense & Security Solutions Inc. (Name of Issuer) Common stock (Title of Class of Securities) 50077B207 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the app

February 9, 2023 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3)* Name of issuer: Kratos Defense & Security Solutions Inc. Title of Class of Securities: Common Stock CUSIP Number: 50077B207 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this

November 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 25, 2022 ☐ TRANSITION REPORT PURSUANT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 25, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460

November 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2022 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

November 3, 2022 EX-99.1

Kratos Reports Third Quarter 2022 Financial Results

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter 2022 Financial Results SAN DIEGO, CA, November 3, 2022 ? Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Security Solutions provider, today reported its third quarter 2022 financial results. For the third quarter of 202

August 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2022 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

August 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 26, 2022 ☐ TRANSITION REPORT PURSUANT TO S

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 26, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRAT

August 4, 2022 EX-99.1

Kratos Reports Second Quarter 2022 Financial Results

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2022 Financial Results SAN DIEGO, CA, August 4, 2022 – Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Security Solutions provider, today reported its second quarter 2022 financial results. For the second quarter of 20

August 4, 2022 EX-10.1

Equity Purchase Agreement, date as of June 13, 2022, by and among Kratos Defense & Security Solutions, Inc., Joseph Brostmeyer (“JB”), Shirley Brostmeyer (“SB”), and certain trusts established by JB, SB and members of their immediate family, as Sellers.

Exhibit 10.1 EQUITY PURCHASE AGREEMENT THIS EQUITY PURCHASE AGREEMENT (this ?Agreement?) is made and entered into as of June 13, 2022 (the ?Effective Date?), by and among Kratos Defense & Security Solutions, Inc., a Delaware corporation (the ?Purchaser?), Joseph D. Brostmeyer (?Joseph Brostmeyer?), Shirley C. Brostmeyer and Joseph Brostmeyer as Trustees of The Shirley C. Brostmeyer Revocable Trust

July 29, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 29, 2022 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or other jurisdiction of incorporat

July 29, 2022 424B3

190,258 Shares Kratos Defense & Security Solutions, Inc. Common Stock

?Filed Pursuant to Rule 424(b)(3) ?Registration No. 333-252921 PROSPECTUS SUPPLEMENT (to Prospectus dated February 9, 2021) 190,258 Shares Kratos Defense & Security Solutions, Inc. Common Stock This prospectus supplement supplements information contained in that certain prospectus dated February 9, 2021 filed as part of that certain registration statement on Form S-3 filed with the U.S. Securities

July 29, 2022 EX-FILING FEES

Calculation of Filing Fee Tables 424(b)(3) (Form Type) Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(3) (Form Type) Kratos Defense & Security Solutions, Inc.

June 17, 2022 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 form8-k2022annualmeeting.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 14, 2022 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 1 Chisholm Trail, Round Rock, TX 92131 (Address of Pri

May 31, 2022 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (?Kratos,? ?we? or ?our?), filed with the United States Securities and Exchange Commission (?SEC?) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the ?Rule?) for the reporting period from January 1, 2021 to December 31, 2021. The Rule was adopted by the SEC to

May 5, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 5, 2022 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

May 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 27, 2022 ☐ TRANSITION REPORT PURSUANT TO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 27, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRA

May 5, 2022 EX-99.1

Kratos Reports First Quarter 2022 Financial Results Affirms Full Year 2022 Financial Guidance

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter 2022 Financial Results Affirms Full Year 2022 Financial Guidance SAN DIEGO, CA, May 5, 2022 – Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Security Solutions provider, today reported its first quarter 2022 financial

April 22, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934

DEF 14A 1 kratosdef14a040922.htm DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by R

April 22, 2022 DEFA14A

UNITED STATES

DEFA14A 1 kratosdefa14a040922.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only

February 22, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 22, 2022 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 22, 2022 EX-10.1

Credit Agreement, dated as of February 18, 2022, among Kratos Defense and Security Solutions, Inc., as Borrower, the lenders from time to time party hereto, and Truist Bank, as Administrative Agent.

Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS HAVE BEEN REDACTED FROM THIS EXHIBIT BECAUSE THEY ARE BOTH (i) NOT MATERIAL AND (ii) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. INFORMATION THAT HAS BEEN OMITTED HAS BEEN IDENTIFIED IN THIS DOCUMENT WITH A PLACEHOLDER IDENTIFIED BY THE MARK ?[***]?. CUSIP: 50077GAK3 CUSIP (Revolver): 50077GAL1 CUSIP (Term Loan): 50077GAM9 CREDIT AGREEMENT dated

February 22, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 26, 2021 ☐ TRANSITION REPORT PURSUA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 26, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 22, 2022 EX-99.1

KRATOS ANNOUNCES COMPLETION OF REFINANCING Approximately $300 Million Outstanding on 6.5% Notes To be Replaced by New 5 Year Bank Credit Facility

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS ANNOUNCES COMPLETION OF REFINANCING TRANSACTION Approximately $300 Million Outstanding on 6.5% Notes To be Replaced by New 5 Year Bank Credit Facility SAN DIEGO, CA, February 22, 2022 ? Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Securit

February 22, 2022 EX-99.1

Kratos Reports Fourth Quarter and Fiscal 2021 Financial Results Fiscal 2021 Revenues of $811.5 Million and Fourth Quarter 2021 Revenues of $211.6 Million Increased 8.5 percent and 2.5 Percent over Fiscal Year and Fourth Quarter 2020 Revenues, Respect

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Fiscal 2021 Financial Results Fiscal 2021 Revenues of $811.5 Million and Fourth Quarter 2021 Revenues of $211.6 Million Increased 8.5 percent and 2.5 Percent over Fiscal Year and Fourth Quarter 2020 Revenues, Respectively Fiscal 2021 Unmanned

February 22, 2022 8-K

Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 18, 2022 KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

February 22, 2022 EX-10.18

Amended and Restated Lease Agreement, dated as of December 20, 2019, by and between STORE Capital Acquisitions, LLC and Kratos RT Logic, Inc.

Exhibit 10.18 SECOND AMENDED AND RESTATED LEASE AGREEMENT THIS SECOND AMENDED AND RESTATED LEASE AGREEMENT (this ?Lease?) is made as of December 20, 2019 (the ?Effective Date?), by and between STORE CAPITAL ACQUISITIONS, LLC, a Delaware limited liability company (?Lessor?), whose address is 8377 E. Hartford Drive, Suite 100, Scottsdale, Arizona 85255, and KRATOS RT LOGIC, INC., a Colorado corporat

February 22, 2022 EX-10.19

First Amendment to Exchange Agreement, dated as of February 18, 2022, by and among Kratos Defense & Security Solutions, Inc., FTT CORE, LLC, Florida Turbine Technologies, Inc., Shirley Brostmeyer (“SB”), Joseph Brostmeyer (“JB”), and certain trusts established by SB, JB and members of their immediate family and JB, as the Sellers Representative.

Exhibit 10.19 FIRST AMENDMENT TO EXCHANGE AGREEMENT This FIRST AMENDMENT TO EXCHANGE AGREEMENT, dated as of February 18, 2022 (this ?Amendment?), to the Exchange Agreement, dated as of February 27, 2019 (the ?Agreement?), is made by and among Kratos Defense & Security Solutions, Inc., a Delaware corporation (?Acquiror?), KTT CORE, Inc., a Delaware corporation formerly known as FTT CORE, LLC (?KTT

February 22, 2022 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries 5-D Systems, Inc. Texas Ai Metrix, Inc. Delaware Avtec Systems, Inc. Virginia BSC Partners, LLC New York Carlsbad ISI, Inc. Maryland Charleston Marine Containers, Inc. Delaware Consolidated Turbine Specialists, LLC Oklahoma Consolidated Turbine Specialists Canada, LLP Canada Consolidated Turbine Specialists Canada, Ltd. Canada CTT Inc. California Dallastown Realty

February 10, 2022 EX-99.1

KRATOS ANNOUNCES COMMENCEMENT OF AN OFFER TO REDEEM ALL OUTSTANDING 6.5% SENIOR SECURED NOTES DUE NOVEMBER 2025 Approximately $300 Million Outstanding on 6.5% Notes Expected to Be Replaced by New 5 Year Bank Credit Facility

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS ANNOUNCES COMMENCEMENT OF AN OFFER TO REDEEM ALL OUTSTANDING 6.5% SENIOR SECURED NOTES DUE NOVEMBER 2025 Approximately $300 Million Outstanding on 6.5% Notes Expected to Be Replaced by New 5 Year Bank Credit Facility SAN DIEGO, CA, February 10, 2022 ? Kratos Defense &

February 10, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 10, 2022 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

February 10, 2022 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01267-kratosdefensesecurit.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: Kratos Defense & Security Solutions Inc. Title of Class of Securities: Common Stock CUSIP Number: 50077B207 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the a

February 9, 2022 SC 13G

KTOS / Kratos Defense & Security Solutions, Inc / ARK Investment Management LLC - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No.

November 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 26, 2021 ☐ TRANSITION REPORT PURSUANT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 26, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460

November 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 3, 2021 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

November 3, 2021 EX-99.1

Kratos Reports Third Quarter Financial Results Third Quarter Revenues of $200.6 Million Third Quarter Space, Satellite and Cyber Business Revenues of $72.0 million Increased Organically 17.5 percent over the Third Quarter of 2020 Third Quarter Unmann

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter Financial Results Third Quarter Revenues of $200.6 Million Third Quarter Space, Satellite and Cyber Business Revenues of $72.0 million Increased Organically 17.5 percent over the Third Quarter of 2020 Third Quarter Unmanned Systems Segment Revenue

August 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 27, 2021 ☐ TRANSITION REPORT PURSUANT TO S

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 27, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRAT

August 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 3, 2021 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

August 3, 2021 EX-99.1

Kratos Reports Second Quarter Financial Results Second Quarter Revenues of $205.1 Million, Increased 20.4 percent over Second Quarter 2020 Second Quarter Unmanned Systems Segment Revenues of $60.3 Million, Increased 43.6 percent over Second Quarter 2

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter Financial Results Second Quarter Revenues of $205.1 Million, Increased 20.4 percent over Second Quarter 2020 Second Quarter Unmanned Systems Segment Revenues of $60.3 Million, Increased 43.6 percent over Second Quarter 2020 Second Quarter KGS Seg

June 2, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 26, 2021 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

June 1, 2021 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (?Kratos,? ?we? or ?our?), filed with the United States Securities and Exchange Commission (?SEC?) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the ?Rule?) for the reporting period from January 1, 2020 to December 31, 2020. The Rule was adopted by the SEC to

June 1, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) (State or Other Jurisdiction of Incorporati

SD 1 formsd2021.htm SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 1 Chisholm Trail, Round Rock, T

May 27, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 26, 2021 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 5, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 28, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRA

May 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 5, 2021 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

May 5, 2021 EX-99.1

Kratos Reports First Quarter Financial Results First Quarter Revenues of $194.2 Million, Increased 15.0 percent over First Quarter 2020 First Quarter Unmanned Systems Segment Revenues of $55.9 Million, Increased 33.1 percent over First Quarter 2020 F

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter Financial Results First Quarter Revenues of $194.2 Million, Increased 15.0 percent over First Quarter 2020 First Quarter Unmanned Systems Segment Revenues of $55.9 Million, Increased 33.1 percent over First Quarter 2020 First Quarter Cash Flow fro

April 9, 2021 DEF 14A

- DEF 14A

DEF 14A 1 kratosdef14a040921.htm DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by R

April 9, 2021 DEFA14A

- DEFA14A

DEFA14A 1 kratosdefa14a040921.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only

February 25, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 27, 2020 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 25, 2021 EX-10.19

by and between Kratos Defense and Security Systems, Inc. and Steven Fendley

Exhibit 10.19 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (?Agreement?) is entered into by and between Kratos Defense & Security Solutions, Inc., a Delaware corporation (?Company?), and Steven Fendley, an individual (?Executive?), effective as of November 18, 2020 (?Effective Date?). Certain terms used in this Agreement denoted by initial capital letters are defined in Section 17, to the extent

February 25, 2021 EX-99.1

Kratos Reports Fourth Quarter and Fiscal 2020 Financial Results Fourth Quarter and Fiscal 2020 Revenues of $206.4 and $747.7 Million, Increased 11.5 percent and 4.2 percent, respectively, over 2019 Fourth Quarter and Fiscal 2020 Unmanned Systems Segm

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Fiscal 2020 Financial Results Fourth Quarter and Fiscal 2020 Revenues of $206.4 and $747.7 Million, Increased 11.5 percent and 4.2 percent, respectively, over 2019 Fourth Quarter and Fiscal 2020 Unmanned Systems Segment Revenues of $49.5 and

February 25, 2021 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries 5-D Systems, Inc. Texas Ai Metrix, Inc. Delaware ASC Signal Corporation Delaware ASC Signal Global Corporation Delaware ASC Signal International Corporation Delaware ASCS Canadian Signal Corporation Canada Avtec Systems, Inc. Virginia BSC Partners, LLC New York Carlsbad ISI, Inc. Maryland Charleston Marine Containers, Inc. Delaware Consolidated Turbine Specialists

February 25, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 25, 2021 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 16, 2021 CORRESP

-

CORRESP 1 filename1.htm February 16, 2021 CORRESPONDENCE VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.C. 20549 Attention: SiSi Cheng Anne Mcconnell Sergio Chinos Asia Timmons-Pierce Re: Kratos Defense & Security Solutions, Inc. Form 10-K for Fiscal Year Ended December 29, 2019 Filed February 24, 2020 Form 8

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Kratos Defense & Security Solutions Inc. Title of Class of Securities: Common Stock CUSIP Number: 50077B207 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this

February 10, 2021 S-3ASR

- S-3ASR

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 9, 2021 Registration No.

February 9, 2021 S-3ASR

- S-3ASR

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 9, 2021 Registration No.

December 28, 2020 CORRESP

-

December 28, 2020 CORRESPONDENCE VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.C. 20549 Attention: SiSi Cheng Anne Mcconnell Sergio Chinos Asia Timmons-Pierce Re: Kratos Defense & Security Solutions, Inc. Form 10-K for Fiscal Year Ended December 29, 2019 Filed February 24, 2020 Form 8-K Filed October 29, 202

October 29, 2020 EX-99.1

Kratos Reports Third Quarter 2020 Financial Results Third Quarter 2020 Revenues of $202.0 Million Increase 9.7% from Third Quarter 2019 Revenues of $184.1 Million Third Quarter 2020 Book to Bill Ratio of 1.8 to 1

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter 2020 Financial Results Third Quarter 2020 Revenues of $202.0 Million Increase 9.7% from Third Quarter 2019 Revenues of $184.1 Million Third Quarter 2020 Book to Bill Ratio of 1.8 to 1 SAN DIEGO, CA, October 29, 2020 – Kratos Defense & Security Sol

October 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 29, 2020 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

October 29, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 27, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460

August 4, 2020 S-8

- S-8

S-8 1 forms-8.htm S-8 As filed with the Securities and Exchange Commission on August 4, 2020 Registration No. 333- UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 13-3818604 (State or other jurisdiction o

August 4, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 28, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRAT

August 4, 2020 EX-99.1

Kratos Reports Second Quarter 2020 Financial Results Second Quarter 2020 Revenues of $170.4 Million Book to Bill Ratio of 1.2 to 1

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2020 Financial Results Second Quarter 2020 Revenues of $170.4 Million Book to Bill Ratio of 1.2 to 1 SAN DIEGO, CA, August 4, 2020 – Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Security Solutions provider, today re

August 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 4, 2020 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

June 23, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 17, 2020 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or other jurisdiction of incorporat

June 23, 2020 EX-99.2

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.2 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA, June 18, 2020 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (Nasdaq: KTOS), a leading National Security Solutions provider, today announced the prici

June 23, 2020 EX-99.1

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK

Exhibit 99.1 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED PUBLIC OFFERING OF COMMON STOCK SAN DIEGO, CA, June 17, 2020 – Kratos Defense & Security Solutions, Inc. (“Kratos”) (Nasdaq: KTOS), a leading National Security Solutions provider, today announc

June 23, 2020 EX-1.1

Underwriting Agreement, dated June 18, 2020, by and between Kratos Defense & Security Solutions, Inc. and Goldman Sachs & Co. LLC, as representative of the several underwriters named therein.

Exhibit 1.1 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 13,500,000 Shares of Common Stock Underwriting Agreement June 18, 2020 Goldman Sachs & Co. LLC As Representative of the several Underwriters listed in Schedule 1 hereto c/o Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 Ladies and Gentlemen: Kratos Defense & Security Solutions, Inc., a Delaware corporation (the “Company”), pro

June 22, 2020 424B5

CALCULATION OF REGISTRATION FEE Title of each class of securities to be registered Amount to be registered(1) Maximum offering price per unit Maximum aggregate offering price Amount of registration fee(2) Common Stock, par value $0.001 per share 15,5

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed pursuant to Rule 424(b)(5) Registration No.

June 17, 2020 424B5

Subject to completion, dated June 17, 2020

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents The information in this preliminary prospectus supplement is not complete and may be changed.

June 5, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 4, 2020 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

June 5, 2020 EX-10.1

2014 Equity Incentive Plan.

Exhibit 10.1 KRATOS DEFENSE & SECURITY SOLUTIONS, INCORPORATED 2014 Equity Incentive Plan Adopted by the Board of Directors: March 28, 2014 Approved by the Stockholders: May 14, 2014 Adopted by the Board of Directors: March 15, 2017 Approved by the Stockholders: May 31, 2017 Adopted by the Board of Directors: March 10, 2020 Approved by the Stockholders: June 4, 2020 1. General. (a) Successor to an

May 29, 2020 SD

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 10680 Treena St., Suite 600, San Diego, CA 92131 (Addr

May 29, 2020 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2019 to December 31, 2019. The Rule was adopted by the SEC to

May 28, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

May 7, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 29, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460 KRA

May 7, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2020 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

May 7, 2020 EX-10.1

Employment Agreement, effective January 1, 2018 by and between Kratos Defense and Security Systems, Inc. and Steven Fendley

EXHIBIT 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is entered into by and between Kratos Defense & Security Solutions, Inc., a Delaware corporation (“Company”), and Steven Fendley, an individual (“Executive”), effective as of January 1, 2018 (“Effective Date”). Certain terms used in this Agreement denoted by initial capital letters are defined in Section 17, to the extent no

May 7, 2020 EX-10.2

Employment Agreement, effective January 1, 2018 by and between Kratos Defense and Security Systems, Inc. and Phil Carrai

EXHIBIT 10.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is entered into by and between Kratos Defense & Security Solutions, Inc., a Delaware corporation (“Company”) and Phil Carrai, an individual (“Executive”), effective as of January 1, 2020 (“Effective Date”). Certain terms used in this Agreement denoted by initial capital letters are defined in Section 17, to the extent not de

May 7, 2020 EX-99.1

Kratos Reports First Quarter 2020 Financial Results First Quarter 2020 Revenues of $168.9 Million Increase 5.3% over First Quarter 2019 Revenues First Quarter Bookings of $213.1 Million and a Book-to-Bill Ratio of 1.3 to 1.0 First Quarter 2020 Unmann

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports First Quarter 2020 Financial Results First Quarter 2020 Revenues of $168.9 Million Increase 5.3% over First Quarter 2019 Revenues First Quarter Bookings of $213.1 Million and a Book-to-Bill Ratio of 1.3 to 1.0 First Quarter 2020 Unmanned Systems Revenues of $42

April 24, 2020 DEF 14A

Definitive Proxy Statement on Schedule 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of The Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Definitive Proxy State

April 24, 2020 DEFA14A

- DEFA14A

DEFA14A 1 kratosdefa14a041720.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only

February 24, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 29, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact

February 24, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 24, 2020 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

February 24, 2020 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Ai Metrix, Inc. Delaware Avtec Systems, Inc. Virginia BSC Partners, LLC New York Carlsbad ISI, Inc. Maryland Charleston Marine Containers, Inc. Delaware Consolidated Turbine Specialists, LLC Oklahoma Consolidated Turbine Specialists Canada, LLP Canada Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware DEI Services Corporation Florida DFI Realty,

February 24, 2020 EX-4.4

Description of Equity Securities Registered under Section 12 of the Exchange Act.

Exhibit 4.4 Description of Equity Securities Registered under Section 12 of the Exchange Act As of February 24, 2020, Kratos Defense & Security Solutions, Inc. (the “Company”) has one class of securities, our common stock, registered under Section 12 of the Securities Exchange Act of 1934, as amended. The following description of our common stock is a summary and does not purport to be complete. I

February 24, 2020 EX-99.1

Kratos Reports Fourth Quarter and Full Year 2019 Financial Results Full Year 2019 Revenues of $717.5 Million Increase 16.1% over Full Year 2018 Revenues Fourth Quarter 2019 Revenues of $185.1 Million Increase 12.6% over Fourth Quarter 2018 Revenues F

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Fourth Quarter and Full Year 2019 Financial Results Full Year 2019 Revenues of $717.5 Million Increase 16.1% over Full Year 2018 Revenues Fourth Quarter 2019 Revenues of $185.1 Million Increase 12.6% over Fourth Quarter 2018 Revenues Full Year 2019 Unmanned Sys

February 24, 2020 EX-10.15

Form of Restricted Stock Unit Grant & Notice and Form of Restricted Stock Unit Award Agreement pursuant to the 2014 Equity Incentive Plan.

EXHIBIT 10.15 Kratos Defense & Security Solutions, Incorporated Form of Restricted Stock Unit Grant Notice (2014 Equity Incentive Plan) Kratos Defense & Security Solutions, Incorporated (the “Company”), pursuant to Section 6(b) of the Company’s 2014 Equity Incentive Plan (the “Plan”), hereby awards to Participant a Restricted Stock Unit Award for the number of shares of the Company’s Common Stock

February 11, 2020 SC 13G

KTOS / Kratos Defense & Security Solutions, Inc. / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Kratos Defense & Security Solutions Inc Title of Class of Securities: Common Stock CUSIP Number: 50077B207 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒

November 5, 2019 EX-99.1

Kratos Reports Third Quarter 2019 Financial Results Third Quarter 2019 Revenues of $184.1 Million Increases 15.5% over Third Quarter 2018 Revenues Third Quarter 2019 Kratos’ Unmanned Systems Division Revenues of $45.7 Million Increases 37.2% over Thi

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Third Quarter 2019 Financial Results Third Quarter 2019 Revenues of $184.1 Million Increases 15.5% over Third Quarter 2018 Revenues Third Quarter 2019 Kratos’ Unmanned Systems Division Revenues of $45.7 Million Increases 37.2% over Third Quarter 2018 Revenues T

November 5, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 5, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpor

November 5, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 29, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-3

September 16, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 16, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorp

August 6, 2019 SC 13D/A

KTOS / Kratos Defense & Security Solutions, Inc. / OAK MANAGEMENT CORP - KRATOS DEFENSE AND SECURITY SOLUTIONS, INC. Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Kratos Defense and Security Solutions, Inc. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 50077B207 (CUSIP Number) Bandel L. Carano Oak Management Corporation 901 Main Avenue, Suite 600 Norwalk, Connecticut 06851 (203) 226-

July 31, 2019 EX-99.1

Kratos Reports Second Quarter 2019 Financial Results Second Quarter 2019 Revenues of $187.9 Million Increase 24.3% over Second Quarter 2018 Revenues Second Quarter 2019 Operating Income of $9.0 Million Increase 246.2% over Second Quarter 2018 Operati

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Reports Second Quarter 2019 Financial Results Second Quarter 2019 Revenues of $187.9 Million Increase 24.3% over Second Quarter 2018 Revenues Second Quarter 2019 Operating Income of $9.0 Million Increase 246.2% over Second Quarter 2018 Operating Income SAN DIEGO, CA, J

July 31, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 31, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporati

July 31, 2019 EX-10.1

Executive Employment Agreement, dated January 1, 2017, by and between Kratos Defense & Security Solutions, Inc. and Ben Goodwin

ktos20190630ex101

July 31, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460

May 31, 2019 SD

KTOS / Kratos Defense & Security Solutions, Inc. SD - - SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 10680 Treena St., Suite 600, San Diego, CA 92131 (Addr

May 31, 2019 EX-1.01

Conflict Minerals Report of Kratos Defense & Security Solutions, Inc. as required by Item 1.01 and 1.02 of this Form.

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2018 to December 31, 2018. The Rule was adopted by the SEC to

May 10, 2019 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 10, 2019 Date of Report (Date of earliest event reported) KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 8, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 8, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporation

May 8, 2019 EX-99.1

Kratos Reports First Quarter 2019 Financial Results Provides Second Quarter Financial Guidance and Reaffirms Previously Provided Full Year 2019 Guidance

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos Reports First Quarter 2019 Financial Results Provides Second Quarter Financial Guidance and Reaffirms Previously Provided Full Year 2019 Guidance SAN DIEGO, CA, May 8, 2019 - Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading Natio

May 8, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-34460

May 8, 2019 EX-10.2

Exchange Agreement, dated February 27, 2019, by and among Kratos Defense & Security Solutions, Inc., FTT CORE, LLC, Florida Turbine Technologies, Inc., Shirley Brostmeyer (“SB”), Joseph Brostmeyer (“JB”), and certain trusts established by S

exchangeagreement Execution Version EXCHANGE AGREEMENT This EXCHANGE AGREEMENT (this "Agreement") is made and entered into as of February 27, 2019 by and among Kratos Defense & Security Solutions, Inc.

May 8, 2019 EX-2.3

Purchase Agreement, dated February 27, 2019, by and among Kratos Defense & Security Solutions, Inc., Shirley Brostmeyer, (“SB”), Joseph Brostmeyer (“JB”), certain trusts established by SB, JB and members of their immediate family, and JB, as the Sellers Representative.

exhibit23redacted Exhibit 2.3 CERTAIN CONFIDENTIAL PORTIONS HAVE BEEN REDACTED FROM THIS EXHIBIT BECAUSE THEY ARE BOTH (i) NOT MATERIAL AND (ii) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. INFORMATION THAT HAS BEEN OMITTED HAS BEEN IDENTIFIED IN THIS DOCUMENT WITH A PLACEHOLDER IDENTIFIED BY THE MARK “[***]”. PURCHASE AGREEMENT among: KRATOS DEFENSE & SECURITY SOLUTIONS, INC., a Delaware

April 17, 2019 DEFA14A

KTOS / Kratos Defense & Security Solutions, Inc. DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

April 17, 2019 DEFA14A

KTOS / Kratos Defense & Security Solutions, Inc. DEFA14A

begin 644 kratosdefensesecsolutionsinc.pdf M)5!$1BTQ+C0-)>+CS],-"C$Y,R P(&]B:@T\/"],:6YE87)I>F5D(#$O3" S M,S@X,"]/(#$Y-2]%(#(R.#8V+TX@,B]4(#,S-34R+T@@6R U,30@,C X73X^ M#65N9&]B:@T@(" @(" @(" @(" @(" @#0HR,38@,"!O8FH-/#PO1&5C;V1E M4&%R;7,\/"]#;VQU;6YS(#0O4')E9&EC=&]R(#$R/CXO1FEL=&5R+T9L871E M1&5C;V1E+TE$6SQ#-$5!-C$Q0C4T-D1#,C1%0C)$03,V1CE"-S1$-S%LQ.3,@ M,SA=+TEN9F\@,3DR(# @4B],96YG=&@@,3 U+U!R978@,

March 29, 2019 DEFA14A

KTOS / Kratos Defense & Security Solutions, Inc. DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

March 29, 2019 DEF 14A

KTOS / Kratos Defense & Security Solutions, Inc. DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Definitive Proxy State

March 11, 2019 8-K

Financial Statements and Exhibits, Other Events

8-K 1 projectpegasus-form8xklega.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2019 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604

March 11, 2019 424B7

CALCULATION OF REGISTRATION FEE

424B7 1 projectpegasus-resaleprosp.htm 424B7 Table of Contents Filed pursuant to Rule 424(b)(7) Registration No. 333-220339 CALCULATION OF REGISTRATION FEE Title of each class of securities to be registered Amount to be registered(1) Proposed maximum offering price per security(2) Proposed maximum aggregate offering price(2) Amount of registration fee(3) Common Stock, par value $0.001 per share 1,

February 28, 2019 EX-99.1

Kratos Reports Fourth Quarter and Fiscal Year 2018 Financial Results Provides Initial Full Year and First Quarter Fiscal 2019 Financial Guidance

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos Reports Fourth Quarter and Fiscal Year 2018 Financial Results Provides Initial Full Year and First Quarter Fiscal 2019 Financial Guidance SAN DIEGO, CA, February 28, 2019 - Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading Nationa

February 28, 2019 10-K

KTOS / Kratos Defense & Security Solutions, Inc. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 30, 2018 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLU

February 28, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 ktos201812308kearningsrele.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 28, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-381860

February 28, 2019 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Other Events

8-K 1 ktosform8-k22719.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2019 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State

February 28, 2019 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Ai Metrix, Inc. Delaware Avtec Systems, Inc. Virginia BSC Partners, LLC New York Carlsbad ISI, Inc. Maryland Charleston Marine Containers, Inc. Delaware Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware Defense Systems, Incorporated Virginia DEI Services Corporation Florida DFI Realty, LLC Florida Digital Fusion Solutions, Inc. Florida Digital F

February 28, 2019 EX-99.1

Kratos Defense & Security Solutions Acquires Advanced Turbine Engine Developer Florida Turbine Technologies New Kratos Business Unit to Focus on the Development and Production of Small, Affordable, High-Performance, Jet Engines for the Next Generatio

Exhibit 99.1 Kratos Defense & Security Solutions Acquires Advanced Turbine Engine Developer Florida Turbine Technologies New Kratos Business Unit to Focus on the Development and Production of Small, Affordable, High-Performance, Jet Engines for the Next Generation of Tactical Weapon Systems and Tactical Jet Unmanned Aerial Systems SAN DIEGO, Feb. 28, 2019 (GLOBE NEWSWIRE) Kratos Defense & Security

February 28, 2019 EX-10.34

Amended and Restated Lease Agreement, dated as of January 1, 2019, by and between STORE Capital Acquisitions, LLC and Kratos RT Logic, Inc.

EXHIBIT 10.34 AMENDED AND RESTATED LEASE AGREEMENT THIS AMENDED AND RESTATED LEASE AGREEMENT (this “Lease”) is made as of January 1, 2019 (the “Effective Date”), by and between STORE CAPITAL ACQUISITIONS, LLC, a Delaware limited liability company (“Lessor”), whose address is 8377 E. Hartford Drive, Suite 100, Scottsdale, Arizona 85255, and KRATOS RT LOGIC, INC., a Colorado corporation. (formerly k

November 6, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 6, 2018 Date of Report (Date of earliest event reported) Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-34460 13-3

November 6, 2018 EX-99.1

Kratos Reports Third Quarter 2018 Financial Results Updates Full Year 2018 Financial Guidance

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos Reports Third Quarter 2018 Financial Results Updates Full Year 2018 Financial Guidance SAN DIEGO, CA, November 6, 2018 - Kratos Defense & Security Solutions, Inc. (Nasdaq:KTOS), a leading National Security Solutions provider, today reported its th

November 6, 2018 10-Q

KTOS / Kratos Defense & Security Solutions, Inc. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2018 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTI

October 4, 2018 8-K

Other Events

8-K 1 ktosform8-k10418.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2018 Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware 001-34460 13-3818604 (State or

August 3, 2018 CORRESP

KTOS / Kratos Defense & Security Solutions, Inc. CORRESP

August 3, 2018 Ms. Amy Geddes Mr. Lyn Shenk, Branch Chief Division of Corporation Finance Office of Transportation and Leisure Securities and Exchange Commission 100 F Street, NE Washington, D.C. 20549 Re: Kratos Defense & Security Solutions, Inc. Form 10-K for the Year Ended December 31, 2017 Filed February 28, 2018 Form 8-K as of May 10, 2018 Filed May 10, 2018 Form 10-Q for the Quarterly Period

August 2, 2018 EX-99.1

Second Quarter 2018 Revenues of $151.2 Million Increase 5.7 Percent Sequentially Over the First Quarter of 2018 and 2.2 Percent Over the Second Quarter of 2017 Kratos’ Unmanned Systems Division Second Quarter 2018 Revenues of $35.6 Million Increase 6

EX-99.1 2 ktos201807018kexhibit991.htm EXHIBIT 99.1 Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Second Quarter 2018 Revenues of $151.2 Million Increase 5.7 Percent Sequentially Over the First Quarter of 2018 and 2.2 Percent Over the Second Quarter of 2017 Kratos’ Unmanned Systems Division Second Q

August 2, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 2, 2018 Date of Report (Date of earliest event reported) Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-34460 13-381

August 2, 2018 10-Q

KTOS / Kratos Defense & Security Solutions, Inc. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended July 1, 2018 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS, I

June 22, 2018 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 19, 2018 Date of Report (Date of earliest event reported): KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

June 12, 2018 EX-99.2

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. Pro Forma Condensed Consolidated Financial Statements

Exhibit 99.2 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. Pro Forma Condensed Consolidated Financial Statements (Unaudited) On June 11, 2018, Kratos Defense & Security Solutions, Inc. (“Kratos” or the “Company”), completed the sale of all of the issued and outstanding capital stock of its wholly-owned subsidiary Kratos Public Safety & Security Solutions, Inc., (“PSS”) for a purchase price of approxim

June 12, 2018 EX-10.1

First Amendment to Amended and Restated Credit and Security Agreement, dated June 11, 2018, among Kratos Defense & Security Solutions, Inc., as Borrower, each of the Credit Parties and Required Lenders party thereto and SunTrust Bank as Agent.

Exhibit 10.1 FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT This FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT (this “Agreement”) is made as of June 11, 2018, and effective upon the Effective Date (as defined below), by and among KRATOS DEFENSE & SECURITY SOLUTIONS, INC., a Delaware corporation (the “Borrower”), each of the other Credit Parties identi

June 12, 2018 EX-99.1

Kratos Completes Sale of Public Safety & Security Division to Securitas Electronic Security, Inc.

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos Completes Sale of Public Safety & Security Division to Securitas Electronic Security, Inc. SAN DIEGO, CA, June 11, 2018, (GLOBE NEWSWIRE) - Kratos Defense & Security Solutions, Inc. (NASDAQ:KTOS), a leading National Security Solutions provider, an

June 12, 2018 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 11, 2018 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorporat

May 31, 2018 SD

KTOS / Kratos Defense & Security Solutions, Inc. SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Kratos Defense & Security Solutions, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 001-34460 13-3818604 (Commission File Number) (IRS Employer Identification Number) 4820 Eastgate Mall, Suite 200, San Diego, California 9

May 31, 2018 EX-1.01

Conflict Minerals Report

EXHIBIT 1.01 Conflict Minerals Report This is the Conflict Minerals Report for Kratos Defense & Security Solutions, Inc. (“Kratos,” “we” or “our”), filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the “Rule”) for the reporting period from January 1, 2017 to December 31, 2017. The Rule was adopted by the SEC to

May 10, 2018 EX-2.2

Stock Purchase Agreement, dated February 28, 2018, among Kratos Defense & Security Solutions, Inc., Kratos Public Safety & Security Solutions, Inc. and Securitas Electronic Security, Inc.

EXECUTION VERSION STOCK PURCHASE AGREEMENT by and among KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

May 10, 2018 10-Q

KTOS / Kratos Defense & Security Solutions, Inc. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended April 1, 2018 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLUTIONS,

May 10, 2018 EX-99.1

Kratos’ First Quarter 2018 and Prior Year Financial Results Reflect Public Safety and Security Business as a Discontinued Operation Pending Expected Second Quarter Divestiture First Quarter 2018 Revenues of $143.0 Million Increase 8.3 Percent over Fi

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos’ First Quarter 2018 and Prior Year Financial Results Reflect Public Safety and Security Business as a Discontinued Operation Pending Expected Second Quarter Divestiture First Quarter 2018 Revenues of $143.0 Million Increase 8.3 Percent over First

May 10, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 10, 2018 Date of Report (Date of earliest event reported) Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-34460 13-38186

April 30, 2018 DEFA14A

KTOS / Kratos Defense & Security Solutions, Inc. DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

April 30, 2018 DEF 14A

KTOS / Kratos Defense & Security Solutions, Inc. DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ý Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ý Defin

March 1, 2018 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

8-K 1 form8-kkpssdivestiture.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 28, 2018 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-34460 13-3818604 (

February 28, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 28, 2018 Date of Report (Date of earliest event reported) Kratos Defense & Security Solutions, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-

February 28, 2018 EX-99.1

Kratos’ Fourth Quarter and Fiscal 2017 Financial Results Exceed Company’s Estimates Fourth Quarter 2017 Revenues of $202.2 Million Increase 11.0 Percent over Fourth Quarter of 2016 Fiscal 2017 Revenues of $751.9 Million Increase 12.4 Percent over Fis

EX-99.1 2 ktos201712318kexhibit991.htm EXHIBIT 99.1 Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos’ Fourth Quarter and Fiscal 2017 Financial Results Exceed Company’s Estimates Fourth Quarter 2017 Revenues of $202.2 Million Increase 11.0 Percent over Fourth Quarter of 2016 Fiscal 2017 Revenues

February 28, 2018 EX-4.5

First Supplemental Indenture, dated as of December 21, 2017, among Kratos Defense & Security Solutions, Inc., as Issuer, the Guarantor as party thereto, and Wilmington Trust, National Association, as Trustee.

Execution Copy FIRST SUPPLEMENTAL INDENTURE First Supplemental Indenture (this “Supplemental Indenture”), dated as of December 21, 2017, among Kratos Defense & Security Solutions, Inc.

February 28, 2018 10-K

KTOS / Kratos Defense & Security Solutions, Inc. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2017 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 Commission file number 001-34460 KRATOS DEFENSE & SECURITY SOLU

February 28, 2018 EX-21.1

List of Subsidiaries.

Exhibit 21.1 List of Subsidiaries Ai Metrix, Inc. Delaware Airorlite Communications, Inc. New Jersey Avtec Systems, Inc. Virginia BSC Partners, LLC New York Charleston Marine Containers, Inc. Delaware Kratos Unmanned Aerial Systems, Inc. California Kratos Systems and Solutions, Inc. Virginia Dallastown Realty I, LLC Delaware Dallastown Realty II, LLC Delaware Defense Systems, Incorporated Virginia

February 28, 2018 EX-10.34

Fifth Amendment to Credit and Security Agreement, dated July 22, 2016, among Kratos Defense & Security Solutions, Inc., as Borrower, each of the Credit Parties and Required Lenders party thereto and SunTrust Bank as Agent.

Execution Version FIFTH AMENDMENT TO CREDIT AND SECURITY AGREEMENT, LIMITED CONSENT, AND WAIVER This FIFTH AMENDMENT TO CREDIT AND SECURITY AGREEMENT, LIMITED CONSENT, AND WAIVER (this “Agreement”) is made as of July 22, 2016, and effective upon the Effective Date (as defined below), by and among KRATOS DEFENSE & SECURITY SOLUTIONS, INC.

February 9, 2018 SC 13G/A

KTOS / Kratos Defense & Security Solutions, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* KRATOS DEFENSE & SECURITY (Name of Issuer) Common Stock (Title of Class of Securities) 50077B207 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which th

November 21, 2017 EX-4.1

Indenture, dated as of November 20, 2017, among Kratos Defense & Security Solutions, Inc., as Issuer, the Guarantors party thereto, and Wilmington Trust, National Association, as Trustee and Collateral Agent.

Exhibit 4.1 INDENTURE, dated as of November 20, 2017, among KRATOS DEFENSE & SECURITY SOLUTIONS, INC. as Issuer, THE GUARANTORS HEREAFTER PARTIES HERETO, as Guarantors and WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee and Collateral Agent 6.50% Senior Secured Notes due 2025 TABLE OF CONTENTS Page ARTICLE ONE DEFINITIONS AND INCORPORATION BY REFERENCE SECTION 1.01. Definitions 1 SECTION 1.02.

November 21, 2017 EX-10.1

Amended and Restated Credit and Security Agreement, dated as of November 20, 2017, among Kratos Defense & Security Solutions, Inc., as Borrower, the lenders named therein, SunTrust Bank, as Agent, and SunTrust Robinson Humphrey, Inc., as Lead Arranger and Sole Book Runner.

Exhibit 10.1 AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT among KRATOS DEFENSE & SECURITY SOLUTIONS, INC., as Borrower, THE LENDERS NAMED HEREIN, as Lenders, SUNTRUST BANK, as Agent, and SUNTRUST ROBINSON HUMPHREY, INC., as Lead Arranger and Sole Book Runner dated as of November 20, 2017 TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS 2 Section 1.1. Definitions 2 Section 1.2. Accounting Terms

November 21, 2017 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 20, 2017 KRATOS DEFENSE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 20, 2017 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorp

November 21, 2017 EX-99.1

Kratos Completes $300 Million 6.50% Senior Secured Notes Offering and Establishes New $90 Million Line of Credit

Exhibit 99.1 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] Kratos Completes $300 Million 6.50% Senior Secured Notes Offering and Establishes New $90 Million Line of Credit San Diego, CA, November 20, 2017 ? Kratos Defense & Security Solutions, Inc. (?Kratos?) (Nasdaq: KTOS), announced today that it has completed

November 9, 2017 EX-99.1

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES OFFERING OF $300 MILLION OF 6.50% SENIOR SECURED NOTES DUE 2025

Exhibit 99.1 For Immediate Release Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. PRICES OFFERING OF $300 MILLION OF 6.50% SENIOR SECURED NOTES DUE 2025 San Diego, CA, November 8, 2017 ? Kratos Defense & Security Solutions, Inc. (?Kratos?) (Nasdaq: KTOS), announced today that it has priced a p

November 9, 2017 8-K

KTOS / Kratos Defense & Security Solutions, Inc. 8-K (Current Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 8, 2017 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

November 6, 2017 EX-99.1

KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED OFFERING OF $300 MILLION OF SENIOR SECURED NOTES DUE 2025

Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 For Immediate Release [email protected] KRATOS DEFENSE & SECURITY SOLUTIONS, INC. ANNOUNCES PROPOSED OFFERING OF $300 MILLION OF SENIOR SECURED NOTES DUE 2025 San Diego, CA, November 6, 2017 — Kratos Defense & Security Solutions, Inc. (“Kratos”) (Nasdaq: KTOS), announced today that it intends

November 6, 2017 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 6, 2017 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-34460 13-3818604 (State or Other Jurisdiction of Incorpo

November 2, 2017 EX-99.1

Kratos Reports Third Quarter 2017 Financial Results Revenues of $196.2 Million Increase 18.6 Percent over Prior Year Kratos Unmanned Systems Business Revenues of $41.6 Million Increase 127.3 Percent over the Prior Year and Increase Sequentially 87.4

EX-99.1 2 ktos201710018kexhibit991.htm EXHIBIT 99.1 Exhibit 99.1 Press Contact: Yolanda White 858-812-7302 Direct Investor Information: 877-934-4687 [email protected] FOR IMMEDIATE RELEASE Kratos Reports Third Quarter 2017 Financial Results Revenues of $196.2 Million Increase 18.6 Percent over Prior Year Kratos Unmanned Systems Business Revenues of $41.6 Million Increase 127.3 Percent ove

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