Benjamin S. Nichols - 15 Oct 2025 Form 4 Insider Report for COMPASS MINERALS INTERNATIONAL INC (CMP)

Role
Chief Commercial Officer
Signature
/s/ Jared Campbell, by power of attorney
Issuer symbol
CMP
Transactions as of
15 Oct 2025
Net transactions value
-$42,497
Form type
4
Filing time
16 Oct 2025, 17:09:53 UTC
Previous filing
25 Jun 2025
Next filing
26 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nichols Benjamin S. Chief Commercial Officer C/O COMPASS MINERALS INTERNATIONAL, INC., 9900 WEST 109TH STREET, SUITE 100, OVERLAND PARK /s/ Jared Campbell, by power of attorney 16 Oct 2025 0002015089

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CMP Common Stock Options Exercise $0 +7,408 +93% $0.000000 15,389 15 Oct 2025 Direct
transaction CMP Common Stock Tax liability $42,497 -2,176 -14% $19.53 13,213 15 Oct 2025 Direct F1
holding CMP Common Stock 249 15 Oct 2025 401(k) Plan F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CMP Restricted Stock Unit Options Exercise $0 -464 -100% $0.000000 0 15 Oct 2025 Common Stock 464 Direct F3, F4
transaction CMP Restricted Stock Unit Options Exercise $0 -855 -50% $0.000000 856 15 Oct 2025 Common Stock 855 Direct F3, F5
transaction CMP Restricted Stock Unit Options Exercise $0 -6,089 -33% $0.000000 12,179 15 Oct 2025 Common Stock 6,089 Direct F3, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the number of shares withheld to satisfy tax withholding obligations in connection with the vesting and release of the restricted stock units listed in Table II.
F2 The reported number is based on a 401(k) plan statement dated as of October 15, 2025.
F3 Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
F4 Restricted stock units vest in three equal annual installments, beginning on the first anniversary of the grant date and ending on October 15, 2025.
F5 Restricted stock units vest in three equal annual installments, beginning on the first anniversary of the grant date and ending on October 15, 2026.
F6 Restricted stock units vest in three equal annual installments, beginning on the first anniversary of the grant date and ending on October 15, 2027.