LORI A. WALKER - 05 Mar 2026 Form 4 Insider Report for COMPASS MINERALS INTERNATIONAL INC (CMP)

Role
Director
Signature
/s/ Deanne Larison, by power of attorney
Issuer symbol
CMP
Transactions as of
05 Mar 2026
Net transactions value
$0
Form type
4
Filing time
09 Mar 2026, 18:18:56 UTC
Previous filing
02 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
WALKER LORI A Director C/O COMPASS MINERALS INTERNATIONAL, INC., 9900 WEST 109TH STREET, SUITE 100, OVERLAND PARK /s/ Deanne Larison, by power of attorney 09 Mar 2026 0001242956

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CMP Common Stock Options Exercise +11,905 +25% $0.000000* 58,715 05 Mar 2026 Walker Joint Revocable Trust F1

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 -11,905 -100% $0.000000* 0 05 Mar 2026 Common Stock 11,905 $0.000000 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

LORI A. WALKER is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 On March 5, 2026, 990 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.
F2 Represents annual grant of restricted stock units vesting in one year by Issuer in connection with the Reporting Person's service as a director.