United States securities and exchange commission logo December 14, 2020 Deanna H. Lund Chief Financial Officer KRATOS DEFENSE & SECURITY SOLUTIONS, INC. 10680 Treena St., Suite 600 San Diego, CA 92131 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, 2020 File No. 001-34460 Dear Ms. Lund: We have reviewed your filing and have the following comments. In some of our comments, we may ask you to provide us with information so we may better understand your disclosure. Please respond to these comments within ten business days by providing the requested information or advise us as soon as possible when you will respond. If you do not believe our comments apply to your facts and circumstances, please tell us why in your response. After reviewing your response to these comments, we may have additional comments. Form 8-K Filed October 29, 2020 Exhibit 99.1 1. We note throughout your earnings release you present non-GAAP financial measures with greater prominence than the most directly comparable GAAP measure. For example, we note you consistently present Adjusted EBITDA before GAAP measures, you discuss Adjusted EBITDA without any discussion of net income, and you discuss Adjusted EPS before you discuss GAAP EPS. We also note that you discuss forecasted Adjusted EBITDA and Free Cash Flow in your Financial Guidance section without a corresponding discussion of the most directly comparable forward-looking GAAP measures. Please revise your disclosures to comply with Question 102.10 of the Compliance and Disclosure Interpretations on Non-GAAP Financial Measures. 2. We note that you have elected to disclose what appears to be a key performance indicator, Deanna H. Lund FirstName LastNameDeanna H. LundSOLUTIONS, INC. KRATOS DEFENSE & SECURITY Comapany14, December NameKRATOS 2020 DEFENSE & SECURITY SOLUTIONS, INC. December Page 2 14, 2020 Page 2 FirstName LastName your book to bill ratio. Please disclose how you compute the book to bill ratio and explain the significance of this ratio in understanding your business. Refer to the metrics guidance set forth in SEC Release No. 33-10751. 3. We note that you present adjusted income from continuing operations and adjusted income from continuing operations per diluted common share. We also note your disclosure that you use the estimated cash tax provision in computing income tax expense to reflect the benefit from the utilization of net operating losses. Since it appears to us that these are non-GAAP performance measures, as they do not appear to fully comply with the requirements for liquidity measures, it appears to us that your determination of income tax expenses related to these measures does not comply with Question 102.11 of the Compliance and Disclosure Interpretations on Non-GAAP Financial Measures. Please revise your non-GAAP financial measures to comply with Question 102.11 or explain why you believe your current measures are appropriate. 4. We note that you disclose Adjusted EBITDA for each reportable segment. Please provide reconciliations to the most directly comparable GAAP measure, which appears to be segment operating income, as required by Item 10(e)(1) of Regulation S-K. Form 10-K Filed February 24, 2020 General 5. We note that your forum selection provision identifies the Court of Chancery of the State of Delaware as the exclusive forum for certain litigation, including any derivative action. Please disclose whether this provision applies to actions arising under the Securities Act or Exchange Act. In that regard, we note that Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder, and Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. If the provision applies to Securities Act claims, please also state that there is uncertainty as to whether a court would enforce such provision and that investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Deanna H. Lund KRATOS DEFENSE & SECURITY SOLUTIONS, INC. December 14, 2020 Page 3 You may contact SiSi Cheng at 202-551-5004 or Anne Mcconnell at 202-551-3709 if you have questions regarding comments on the financial statements and related matters. Please contact Sergio Chinos at 202-551-7844 or Asia Timmons-Pierce at 202-551-3754 with any other questions. FirstName LastNameDeanna H. Lund Sincerely, Comapany NameKRATOS DEFENSE & SECURITY SOLUTIONS, INC. Division of Corporation Finance December 14, 2020 Page 3 Office of Manufacturing FirstName LastName