Compass Minerals (CMP) director discloses 1,433-share stock grant in Form 4

Rhea-AI Filing Summary

Compass Minerals International director reported a routine equity grant. On 12/31/2025, the director received 1,433 shares of common stock, recorded at a price of $0, reflecting stock units granted for board service.

After this transaction, the director beneficially owns 31,247 Compass Minerals common shares, held directly. The filing reports an acquisition rather than a sale, indicating additional equity-based compensation tied to the director role.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Miller Melissa M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,433	$0.00	--

Holdings After Transaction: Common Stock — 31,247 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Miller Melissa M

(Last) (First) (Middle)

9900 WEST 109TH STREET

SUITE 100

(Street)

OVERLAND PARK KS 66210

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
COMPASS MINERALS INTERNATIONAL INC [ CMP ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

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	12/31/2025		A		1,433(1)	A	$0	31,247	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

Explanation of Responses:

1. Represents common stock units granted by the Issuer in connection with the Reporting Person's service as a director.

Remarks:

	/s/ Deanne Larison, by power of attorney	01/05/2026
	** Signature of Reporting Person	Date
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.

FAQ

What insider transaction did Compass Minerals (CMP) report in this Form 4?

A director of Compass Minerals International reported receiving 1,433 shares of common stock on 12/31/2025 as an equity grant.

What type of CMP security was involved in this insider transaction?

The transaction involved Compass Minerals common stock, described as common stock units granted for the director’s service.

Was the Compass Minerals (CMP) insider transaction a purchase, sale, or grant?

It was an acquisition of shares classified as a grant of common stock units for the director’s service, not an open-market purchase or sale.

How many Compass Minerals (CMP) shares does the director own after this transaction?

Following the reported grant, the director beneficially owns 31,247 shares of Compass Minerals common stock, held directly.

What was the reported price for the CMP shares granted to the director?

The 1,433 shares of Compass Minerals common stock were reported at a price of $0, consistent with a stock grant for board service.

What is the relationship of the reporting person to Compass Minerals (CMP)?

The reporting person is identified as a director of Compass Minerals International Inc.