Compass Minerals (CMP) Director Receives 1,465 Stock Units on 09/30/2025

Rhea-AI Filing Summary

Melissa M. Miller, a director of Compass Minerals International, was granted 1,465 common stock units on 09/30/2025 as compensation for board service. The transaction was recorded on a Form 4 filed under the issuer ticker CMP. The grant had a reported price of $0, consistent with issuance of stock units rather than a cash purchase, and increased the reporting person’s total beneficial ownership to 29,814 shares. The Form 4 was signed by a power of attorney on 10/02/2025 and includes an explanation that the units were granted in connection with director service.

Positive

• 1,465 common stock units granted to the reporting director on 09/30/2025 as director compensation
• Total beneficial ownership increased to 29,814 shares, as reported on the Form 4

Negative

• None.

Insights

Financial Analyst

TL;DR: Director compensation issued as equity units; ownership modestly increased to 29,814 shares.

The Form 4 documents a routine equity grant: 1,465 common stock units awarded to director Melissa M. Miller on 09/30/2025 at a reported price of $0, increasing reported beneficial ownership to 29,814 shares. As disclosed, these units were issued as part of board service rather than a market purchase, and there are no derivative transactions or disposals disclosed. The filing provides limited financial impact data and does not indicate sale activity or changes to outstanding options.

Corporate Governance Expert

TL;DR: Routine director equity grant recorded; procedural filing signed by POA, no governance red flags shown.

The report shows a standard director compensation event: 1,465 common stock units granted on 09/30/2025 and reflected on a Form 4. The description explicitly ties the units to the Reporting Person’s service as a director. The signature block shows the form was executed by a power of attorney on 10/02/2025. The disclosure is concise and limited to the grant; it does not present any compliance issues or material changes to ownership beyond the stated total.

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).

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)
09/30/2025

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	09/30/2025		A		1,465(1)	A	$0	29,814	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:

Exhibit 24 - Power of Attorney

	/s/ Deanne Larison, by power of attorney	10/02/2025
	** 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 did Melissa M. Miller report on the Form 4 for CMP?

The Form 4 reports a grant of 1,465 common stock units on 09/30/2025, increasing her beneficial ownership to 29,814 shares.

Was there a cash purchase price reported for the CMP equity grant?

No cash price was reported; the transaction lists a price of $0, indicating issuance of units rather than a market purchase.

Who executed the Form 4 filing for the CMP reporting person?

The Form 4 was signed by Deanne Larison by power of attorney on 10/02/2025.

Does the Form 4 disclose any option exercises or derivative transactions for CMP?

No. The filing includes only a non-derivative grant of common stock units and shows no derivative securities or disposals.