CMP director Joyce exercises RSUs, gets new grant

Compass Minerals International director Gareth T. Joyce reported equity awards and an exercise of restricted stock units.

Rhea-AI Filing Summary

Compass Minerals International director Gareth T. Joyce reported equity awards and an exercise of restricted stock units. On the reported date, 11,905 restricted stock units were exercised into 11,905 shares of common stock at a stated price of $0.00 per share.

Joyce also received an annual grant of 5,032 restricted stock units in connection with service as a director. These units will vest on the earlier of the day immediately preceding the company’s next annual meeting, if held at least 50 weeks from the grant date, or the first anniversary of the grant date. Following these transactions, Joyce directly held 43,118 shares of common stock and 5,032 restricted stock units.

Insider Trade Summary

11,905 shares exercised/converted

Exercise 3 txns

Insider Joyce Gareth T

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	11,905	$0.00	$0.00
Grant/Award	Restricted Stock Unit	5,032	$0.00	$0.00
Exercise	Common Stock	11,905	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 5,032 contracts (Direct); Common Stock — 43,118 shares (Direct)

Footnotes (1)

1. F1. Represents annual grant of restricted stock units in connection with the Reporting Person's service as a director, which will vest on the earlier of (a) the day immediately preceding the Issuer's next annual meeting (as long as the meeting is held at least 50 weeks from the grant date) and (b) the first anniversary of the grant date.

FAQ

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What insider transactions did CMP director Gareth T. Joyce report?

Gareth T. Joyce reported exercising 11,905 restricted stock units into 11,905 shares of Compass Minerals common stock and receiving a grant of 5,032 new restricted stock units. All positions are reported as directly owned, reflecting equity compensation tied to his role as a director.

How many Compass Minerals (CMP) shares does Gareth T. Joyce hold after this Form 4?

After the reported transactions, Gareth T. Joyce directly holds 43,118 shares of Compass Minerals common stock. He also holds 5,032 restricted stock units that represent a right to receive additional shares in the future, subject to the specified vesting conditions linked to his board service.

What are the terms of Gareth T. Joyce’s new CMP restricted stock unit grant?

The new grant to Gareth T. Joyce consists of 5,032 restricted stock units as an annual award for director service. These units will vest on the earlier of the day immediately preceding Compass Minerals’ next annual meeting, if held at least 50 weeks from grant, or the first anniversary.

Did Gareth T. Joyce buy or sell Compass Minerals (CMP) shares on the market?

The Form 4 shows an exercise of 11,905 restricted stock units into common shares at a stated price of $0.00 and a grant of 5,032 restricted stock units. It does not report any open-market purchases or sales; all listed transactions are equity awards and conversions.

What does the exercise of 11,905 restricted stock units mean for CMP director Gareth T. Joyce?

Exercising 11,905 restricted stock units converted those units into 11,905 shares of Compass Minerals common stock. This shifts value from a derivative award into directly held stock, increasing his reported common stock holdings while reducing his outstanding restricted stock unit balance by the exercised amount.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 03/09/2026 - 04:50 PM Learn about SEC filing dates

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^*

Joyce Gareth T

(Last) (First) (Middle)

C/O COMPASS MINERALS INTERNATIONAL, INC.

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)
03/05/2026

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	03/05/2026		M		11,905	A	$0	43,118	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 Unit	$0	03/05/2026		M			11,905	03/05/2026	03/05/2026	Common Stock	11,905	$0	0	D
Restricted Stock Unit	$0	03/05/2026		A		5,032(1)		03/04/2027	03/04/2027	Common Stock	5,032	$0	5,032	D

Explanation of Responses:

1. Represents annual grant of restricted stock units in connection with the Reporting Person's service as a director, which will vest on the earlier of (a) the day immediately preceding the Issuer's next annual meeting (as long as the meeting is held at least 50 weeks from the grant date) and (b) the first anniversary of the grant date.

Remarks:

	/s/ Deanne Larison, by power of attorney	03/09/2026
	** 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.