Compass Minerals (NYSE: CMP) director reports stock grant and share update

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

The Form 4 reports that a director of Compass Minerals International acquired 1,528 shares of common stock on 12/31/2025 . These were granted as common stock units in connection with the director’s service on the board and reported at a price of $0 .

Q: What are the 1,528 Compass Minerals shares reported as acquired on 12/31/2025?

The 1,528 shares reported as acquired on 12/31/2025 are common stock units granted by Compass Minerals in connection with the reporting person’s service as a director , and are shown as an acquisition at $0 .

Q: What is the significance of the 2,063 deferred stock units mentioned in the Compass Minerals Form 4?

The filing explains that on 01/02/2026 , 2,063 deferred stock units were distributed to the director in the form of Compass Minerals common stock. The director’s ownership figures in the report have been adjusted to reflect this distribution.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Compass Minerals International director reports stock grant and updated holdings. A director of Compass Minerals International received 1,528 shares of common stock on 12/31/2025, reported as an acquisition at a price of $0. These shares represent common stock units granted in connection with the director’s service on the board.

Following this transaction, the director beneficially owns 45,820 shares indirectly through the Walker Joint Revocable Trust and 990 shares directly. The filing also notes that on 01/02/2026, an additional 2,063 deferred stock units were distributed to the director in the form of common stock, and the reported ownership has been adjusted to reflect this distribution. The director’s deferred stock units are granted as part of compensation for board service.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider WALKER LORI A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,528	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 45,820 shares (Indirect, Walker Joint Revocable Trust); Common Stock — 990 shares (Direct)

Footnotes (1)

Represents common stock units granted by the Issuer in connection with the Reporting Person's service as a director. On January 2, 2026, 2,063 deferred stock units were distributed to the Reporting Person in the form of Issuer's common stock. The Reporting Person's ownership has been adjusted to reflect this distribution. Represents deferred stock units granted by the Issuer in connection with the Reporting Person's service as a director.

Form 4 Insider Transactions: What Each Field Means →

01/05/2026 - 07:23 PM

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
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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^*

WALKER LORI A

(Last)

(First)

(Middle)

C/O COMPASS MINERALS INTERNATIONAL, INC.

9900 WEST 109TH STREET, SUITE 100

(Street)

OVERLAND PARK

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/31/2025		A		1,528⁽¹⁾	A	$0	45,820⁽²⁾	I	Walker Joint Revocable Trust
Common Stock⁽³⁾								990⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

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

2. On January 2, 2026, 2,063 deferred stock units were distributed to the Reporting Person in the form of Issuer's common stock. The Reporting Person's ownership has been adjusted to reflect this distribution.

3. Represents deferred 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.

Source: View Original Filing on SEC EDGAR

FAQ

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

The Form 4 reports that a director of Compass Minerals International acquired 1,528 shares of common stock on 12/31/2025. These were granted as common stock units in connection with the director’s service on the board and reported at a price of $0.

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

After the reported transaction and related adjustments, the director beneficially owns 45,820 shares of Compass Minerals common stock indirectly through the Walker Joint Revocable Trust and 990 shares directly.

What are the 1,528 Compass Minerals shares reported as acquired on 12/31/2025?

The 1,528 shares reported as acquired on 12/31/2025 are common stock units granted by Compass Minerals in connection with the reporting person’s service as a director, and are shown as an acquisition at $0.

What is the significance of the 2,063 deferred stock units mentioned in the Compass Minerals Form 4?

The filing explains that on 01/02/2026, 2,063 deferred stock units were distributed to the director in the form of Compass Minerals common stock. The director’s ownership figures in the report have been adjusted to reflect this distribution.

How does the director hold Compass Minerals (CMP) shares after the reported transactions?

The director holds Compass Minerals common stock in two ways: 45,820 shares are held indirectly through the Walker Joint Revocable Trust, and 990 shares are held directly in the director’s own name.

Why did Compass Minerals grant deferred stock units to the director?

The explanation section states that the deferred stock units are granted by Compass Minerals in connection with the reporting person’s service as a director, reflecting part of the director’s board compensation.