Key facts
- This page summarizes Thomas E. Mills IV's Form 4 filing for KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (KTOS).
- 16 reported transactions and 6 derivative rows are listed below.
- Accepted by SEC: 06 Jan 2026, 20:38.
Thomas E. Mills IV - 03 Jan 2026 Form 4 Insider Report for KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (KTOS)
- Reporting relationship
- President, C5ISR Division
- Issuer ticker
- KTOS
- Reported as of
- 03 Jan 2026
- Net transaction value
- -$513,561
- SEC form
- 4
- Accepted by SEC
- 06 Jan 2026, 20:38:19 UTC
- Prior SEC filing
- 04 Sep 2025
- Next SEC filing
- 09 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- Thomas E. Mills, by Eva Yee, Attorney-In-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Thomas E. Mills IV filed Form 4 for KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (KTOS) on 06 Jan 2026.
Change
- Previous filing in this sequence was filed on 04 Sep 2025.
- Current net transaction value: -$513,561.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001080997
Primary reporting owner
MILLS THOMAS E IV
- Relationship
- President, C5ISR Division
- Address
- 10680 TREENA STREET, SUITE 600, SAN DIEGO
- Signature
- Thomas E. Mills, by Eva Yee, Attorney-In-Fact
- Signature date
- 06 Jan 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
KTOS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +3,000
- Change %
- +31%
- Price
- $0.000000
- Shares after
- 12,821
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F3, F9
KTOS
transaction
Common Stock
Tax liability
- Transaction value
- $110,134
- Shares
- -1,389
- Change %
- -11%
- Price
- $79.29
- Shares after
- 11,432
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F8, F9
KTOS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +3,000
- Change %
- +26%
- Price
- $0.000000
- Shares after
- 14,432
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F4, F9
KTOS
transaction
Common Stock
Tax liability
- Transaction value
- $100,857
- Shares
- -1,272
- Change %
- -8.8%
- Price
- $79.29
- Shares after
- 13,160
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F8, F9
KTOS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +3,000
- Change %
- +23%
- Price
- $0.000000
- Shares after
- 16,160
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F5, F9
KTOS
transaction
Common Stock
Tax liability
- Transaction value
- $100,857
- Shares
- -1,272
- Change %
- -7.9%
- Price
- $79.29
- Shares after
- 14,888
- Date
- 03 Jan 2026
- Ownership
- Direct
- Footnotes
- F8, F9
KTOS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +3,000
- Change %
- +20%
- Price
- $0.000000
- Shares after
- 17,888
- Date
- 04 Jan 2026
- Ownership
- Direct
- Footnotes
- F6, F9
KTOS
transaction
Common Stock
Tax liability
- Transaction value
- $100,857
- Shares
- -1,272
- Change %
- -7.1%
- Price
- $79.29
- Shares after
- 16,616
- Date
- 04 Jan 2026
- Ownership
- Direct
- Footnotes
- F8, F9
KTOS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +3,000
- Change %
- +18%
- Price
- $0.000000
- Shares after
- 19,616
- Date
- 04 Jan 2026
- Ownership
- Direct
- Footnotes
- F7, F9
KTOS
transaction
Common Stock
Tax liability
- Transaction value
- $100,857
- Shares
- -1,272
- Change %
- -6.5%
- Price
- $79.29
- Shares after
- 18,344
- Date
- 04 Jan 2026
- Ownership
- Direct
- Footnotes
- F8, F9
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
KTOS
transaction
Derivative
Restricted Stock Units
Award
- Transaction value
- $0
- Shares
- +25,000
- Change %
- Price
- $0.000000
- Shares after
- 25,000
- Date
- 03 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 25,000
- Exercise price
- Footnotes
- F1, F2
KTOS
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -3,000
- Change %
- -50%
- Price
- $0.000000
- Shares after
- 3,000
- Date
- 03 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,000
- Exercise price
- Footnotes
- F1, F3
KTOS
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -3,000
- Change %
- -33%
- Price
- $0.000000
- Shares after
- 6,000
- Date
- 03 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,000
- Exercise price
- Footnotes
- F1, F4
KTOS
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -3,000
- Change %
- -20%
- Price
- $0.000000
- Shares after
- 12,000
- Date
- 03 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,000
- Exercise price
- Footnotes
- F1, F5
KTOS
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -3,000
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 04 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,000
- Exercise price
- Footnotes
- F1, F6
KTOS
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -3,000
- Change %
- -25%
- Price
- $0.000000
- Shares after
- 9,000
- Date
- 04 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,000
- Exercise price
- Footnotes
- F1, F7
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 9 footnotes
Footnote F1
Each restricted stock unit (RSU) represents a contingent right to receive one share of Issuer's common stock.
Footnote F2
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.
Footnote F3
RSUs were granted and previously reported on a Form 4 filed January 5, 2022, where 15,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2022 date of grant.
Footnote F4
RSUs were granted and previously reported on a Form 4 filed January 5, 2023, where 15,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2023 date of grant.
Footnote F5
RSUs were granted and previously reported on a Form 4 filed January 7, 2025, where 15,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2025 date of grant.
Footnote F6
RSUs were granted and previously reported on a Form 4 filed January 5, 2021, where 15,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2021 date of grant.
Footnote F7
RSUs were granted and previously reported on a Form 4 filed January 5, 2024, where 15,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2024 date of grant.
Footnote F8
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.
Footnote F9
Includes 374 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 3,689 shares held through Issuer's 401(k).