Teresa D. Cook - Oct 15, 2023 Form 4 Insider Report for COMPASS MINERALS INTERNATIONAL INC (CMP)

Role: Chief Accounting Officer
Signature: /s/ Robert B. Porter, Attorney-in-Fact
Stock symbol: CMP
Transactions as of: Oct 15, 2023
Transactions value $: -$5,318
Form type: 4
Date filed: 10/17/2023, 05:32 PM
Previous filing: May 22, 2023
Next filing: Nov 20, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CMP	Common Stock	Options Exercise	$0	+661	+25.47%	$0.00	3.26K	Oct 15, 2023	Direct
transaction	CMP	Common Stock	Tax liability	-$5.32K	-195	-5.99%	$27.27	3.06K	Oct 15, 2023	Direct	F1
holding	CMP	Common Stock						350	Oct 15, 2023	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	Award	$0	+3.26K		$0.00	3.26K	Oct 15, 2023	Common Stock	3.26K		Direct	F3, F4
transaction	CMP	Restricted Stock Unit	Options Exercise	$0	-168	-50.15%	$0.00	167	Oct 15, 2023	Common Stock	168		Direct	F5, F6
transaction	CMP	Restricted Stock Unit	Options Exercise	$0	-493	-33.33%	$0.00	986	Oct 15, 2023	Common Stock	493		Direct	F3, F7

* 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 on the vesting and release of restricted stock units.
F2	The reported number is based on a 401(k) plan statement dated as of October 13, 2023.
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, 2026.
F5	Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. A performance hurdle tied to the Issuer's fiscal year 2022 financial performance was satisfied.
F6	The first and second tranche of these restricted stock units vested on November 14, 2022 (the date the Compensation Committee certified achievement of the performance hurdle) and October 15, 2023, respectively. The remaining tranche will vest on October 15, 2024.
F7	Restricted stock units vest in three equal annual installments, beginning on the first anniversary of the grant date and ending on October 15, 2025.