SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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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1. Name and Address of Reporting Person* Risner Brandon (Last) (First) (Middle) C/O COMPASS MINERALS INTERNATIONAL, INC. 9900 WEST 109TH STREET, SUITE 100 (Street) OVERLAND PARK KANSAS 66210 (City) (State) (Zip) UNITED STATES (Country)	2. Date of Event Requiring Statement (Month/Day/Year) 08/03/2026	3. Issuer Name and Ticker or Trading Symbol COMPASS MINERALS INTERNATIONAL INC [ CMP ]
		3a. Foreign Trading Symbol	5. If Amendment, Date of Original Filed (Month/Day/Year)
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Chief Operating Officer	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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	11/24/2028	11/24/2028	Common Stock	10,028	(1)	D
Restricted Stock Unit	06/15/2028	06/15/2028	Common Stock	1,127	(2)	D
Restricted Stock Unit	10/15/2027	10/15/2027	Common Stock	8,885	(3)	D
Restricted Stock Unit	10/15/2026	10/15/2026	Common Stock	803	(4)	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. The restricted stock units vest in three equal installments, beginning on the first anniversary of the grant date and ending on November 24, 2028.

2. Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. The restricted stock units will vest on June 15, 2028, upon completion of a two-year service period.

3. Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. The restricted stock units vest in three equal installments, beginning on the first anniversary of the grant date and ending on October 15, 2027.

4. Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. The restricted stock units vest in three equal installments, beginning on the first anniversary of the grant date and ending on October 15, 2026.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Jared Campbell, by power of attorney	08/13/2026
	** 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 5 (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.
* Form 3: SEC 1473 (03-26)