Kratos Defense & Security Solutions (KTOS) officer reports RSU vesting and tax share withholding

Rhea-AI Filing Summary

Kratos Defense & Security Solutions officer Stacey G. Rock, President of the KTT Division, reported insider equity transactions involving 7,500 shares of common stock on 12/13/2025.

On that date, 7,500 previously granted Restricted Stock Units converted into common stock at a price of $0, reflecting the vesting of part of a 15,000 RSU award that vests ratably on each of the first two anniversaries of the December 13, 2023 grant date. To cover tax obligations on the vesting, 2,951 shares were withheld at a price of $75.96 per share.

After these transactions, Rock beneficially owns 38,812 shares of Kratos common stock directly, which includes 1,723 shares purchased through the Employee Stock Purchase Plan and approximately 6,680 shares held through the company’s 401(k) plan.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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

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^*

Rock Stacey G

(Last) (First) (Middle)

10680 TREENA STREET, SUITE 600

(Street)

SAN DIEGO CA 92131

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
KRATOS DEFENSE & SECURITY SOLUTIONS, INC. [ KTOS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, KTT Division

3. Date of Earliest Transaction (Month/Day/Year)
12/13/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/13/2025		M		7,500(2)	A	$0	41,763(4)	D
Common Stock	12/13/2025		F		2,951(3)	D	$75.96	38,812(4)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	12/13/2025		M			7,500	(2)	(2)	Common Stock	7,500	$0	0	D

Explanation of Responses:

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

2. RSUs were granted and previously reported on a Form 4 filed December 15, 2023, where 15,000 RSUs vest ratably on each of the first two anniversaries of the December 13, 2023 date of grant.

3. 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.

4. Includes 1,723 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 6,680 shares held through Issuer's 401(k).

	Stacey G. Rock, by Eva Yee, Attorney-In-Fact	12/16/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider stock transaction did KTOS officer Stacey G. Rock report?

Stacey G. Rock reported the vesting of 7,500 Restricted Stock Units into Kratos common stock on 12/13/2025, along with related tax share withholding.

How many Kratos (KTOS) shares did Stacey G. Rock acquire and at what price?

She acquired 7,500 shares of Kratos common stock upon RSU vesting at an effective price of $0 per share, reflecting the conversion of previously granted RSUs.

How many KTOS shares were withheld for taxes in this insider transaction?

To satisfy tax liabilities related to the vesting, 2,951 shares of Kratos common stock were withheld at a price of $75.96 per share.

What is Stacey G. Rock’s beneficial ownership in Kratos after the reported transactions?

Following the transactions, Stacey G. Rock beneficially owns 38,812 shares of Kratos common stock directly.

How are employee plan holdings reflected in Stacey G. Rock’s KTOS share total?

The 38,812 directly owned shares include 1,723 shares purchased through Kratos’ Employee Stock Purchase Plan and approximately 6,680 shares held through the company’s 401(k) plan.

What was the original RSU grant underlying this KTOS insider transaction?

The reported vesting relates to a grant of 15,000 Restricted Stock Units made on December 13, 2023, which vest ratably on each of the first two anniversaries of the grant date.