# EDGAR Filing Document

**Accession Number:** 0001069258
**File Stem:** 0001082440-26-000001
**Filing Date:** 2026-1
**Character Count:** 12116
**Document Hash:** 1e19d808a28c8304dd937f73b74ba837
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001082440-26-000001.hdr.sgml**: 20260106

**ACCESSION NUMBER**: 0001082440-26-000001

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260103

**FILED AS OF DATE**: 20260106

**DATE AS OF CHANGE**: 20260106

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** DEMARCO ERIC M
- **CENTRAL INDEX KEY:** 0001082440

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34460
- **FILM NUMBER:** 26513822

**MAIL ADDRESS:**
- **STREET 1:** 10680 TREENA STREET, SUITE 600
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92131
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
- **CENTRAL INDEX KEY:** 0001069258
- **STANDARD INDUSTRIAL CLASSIFICATION:** GUIDED MISSILES & SPACE VEHICLES & PARTS [3760]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 133818604
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1228

**BUSINESS ADDRESS:**
- **STREET 1:** 10680 TREENA STREET
- **STREET 2:** SUITE 600
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92131
- **BUSINESS PHONE:** 858-812-7300

**MAIL ADDRESS:**
- **STREET 1:** 10680 TREENA STREET
- **STREET 2:** SUITE 600
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92131

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WIRELESS FACILITIES INC
- **DATE OF NAME CHANGE:** 19990817

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[x] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>DEMARCO ERIC M<br><sub>(Last) (First) (Middle)</sub><br>10680 TREENA STREET, SUITE 600<br><sub>(Street)</sub><br>SAN DIEGO, CA 92131<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-01-03 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_President & CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>KRATOS DEFENSE & SECURITY SOLUTIONS, INC. [ KTOS ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-01-03 |  | M |  | 30000<sup>(3)</sup> | A | $0 | 826237<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-03 |  | F |  | 11900<sup>(8)</sup> | D | $79.29 | 814337<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-03 |  | M |  | 30000<sup>(4)</sup> | A | $0 | 844337<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-03 |  | F |  | 11805<sup>(8)</sup> | D | $79.29 | 832532<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-03 |  | M |  | 30000<sup>(5)</sup> | A | $0 | 862532<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-03 |  | F |  | 11805<sup>(8)</sup> | D | $79.29 | 850727<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-04 |  | M |  | 30000<sup>(6)</sup> | A | $0 | 880727<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-04 |  | F |  | 11805<sup>(8)</sup> | D | $79.29 | 868922<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-04 |  | M |  | 30000<sup>(7)</sup> | A | $0 | 898922<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-04 |  | F |  | 11805<sup>(8)</sup> | D | $79.29 | 887117<sup>(9)</sup> | I | by trust |
| Common Stock | 2026-01-05 |  | S |  | 8301<sup>(10)</sup> | D | 90.0014<sup>(11)</sup> | 878816 | I | by trust |
| Common Stock | 2026-01-06 |  | S |  | 189824<sup>(10)</sup> | D | 90.2733<sup>(12)</sup> | 688992 | I | by trust |
| Common Stock | 2026-01-06 |  | S |  | 1875<sup>(10)</sup> | D | 91.0212<sup>(13)</sup> | 687117<sup>(14)</sup> | I | by trust |
| Common Stock |  |  |  |  |  |  |  | 62203<sup>(14)(15)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-03 |  | A |  | 150000 |  | <sup>(2)</sup> | <sup>(2)</sup> | Common Stock | 150000 | $0 | 150000 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-03 |  | M |  |  | 30000 | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock | 30000 | $0 | 30000 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-03 |  | M |  |  | 30000 | <sup>(4)</sup> | <sup>(4)</sup> | Common Stock | 30000 | $0 | 60000 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-03 |  | M |  |  | 30000 | <sup>(5)</sup> | <sup>(5)</sup> | Common Stock | 30000 | $0 | 120000 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-04 |  | M |  |  | 30000 | <sup>(6)</sup> | <sup>(6)</sup> | Common Stock | 30000 | $0 | 0 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2026-01-04 |  | M |  |  | 30000 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 30000 | $0 | 90000 | D |  |

---

### Footnotes:

(1) Each restricted stock unit (RSU) represents a contingent right to receive one share of Issuer's common stock.

(2) RSUs vest ratably on each of the first five anniversaries of the date of grant, unless earlier vested or terminated pursuant to the terms of the RSU agreement.

(3) RSUs were granted and previously reported on a Form 4 filed January 5, 2022, where 150,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2022 date of grant.

(4) RSUs were granted and previously reported on a Form 4 filed January 5, 2023, where 150,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2023 date of grant.

(5) RSUs were granted and previously reported on a Form 4 filed January 7, 2025, where 150,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2025 date of grant.

(6) RSUs were granted and previously reported on a Form 4 filed January 5, 2021, where 150,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2021 date of grant.

(7) RSUs were granted and previously reported on a Form 4 filed January 4, 2024, where 150,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2024 date of grant.

(8) Shares withheld in a net transaction to satisfy the tax liability, in accordance with Issuer's trading policies, in connection with shares vested as reported in this Form 4.

(9) RSUs were granted to Reporting Person, and per Reporting Person's instructions, the common stock from such released RSUs were issued to Reporting Person's trust.

(10) This transaction was effected pursuant to a 10b5-1 trading plan adopted by the reporting person on August 29, 2025.

(11) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.00 to $90.02 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

(12) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.00 to $90.99 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

(13) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.005 to $91.035 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

(14) In addition to the 687,117 shares and 62,203 shares reported in Column 5, as of  January 6, 2026, 1,212,500 deferred restricted stock units (RSUs) granted to Mr. DeMarco, representing non-qualified deferred compensation, have vested but remain subject to a previously agree to 5-year deferral period before issuance and release, which substantially all subject RSUs are scheduled to be released by January 2029, and, in addition to the January 3, 2026 RSU award, which includes 150,000 RSUs reported in Table II, an additional 600,000 RSUs granted to Mr. DeMarco are currently unvested and will only vest upon achievement of applicable vesting terms described in our proxy statement on Schedule 14A filed with the SEC on April 4, 2025. Each RSU represents a contingent right to receive one share of the Company's common stock.

(15) Includes 43,674 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 18,529 shares held through Issuer's 401(k).

**Signature:** Eric M. DeMarco, by Eva Yee, Attorney-In-Fact  
**Date:** 2026-01-06

### Remarks:

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

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**