InsiderTrades

Form 4 for CMP COMPASS MINERALS INTERNATIONAL INC

Accepted 2026-05-14 20:16:51 ET · period of report 2026-05-13 · accession 0002015089-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-05-14 20:16 2026-05-13 CMP Nichols Benjamin S. Chief Commercial Off M - OptEx $0.00 +737 13.9K +6% $0
D 2026-05-14 20:16 2026-05-13 CMP Nichols Benjamin S. Chief Commercial Off F - Tax $30.21 -247 13.7K -2% -$7,462
D 2026-05-14 20:16 2026-05-13 CMP Nichols Benjamin S. Chief Commercial Off M - OptEx $0.00 -737 1,473 -33% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-05-13 M A 737 $0.00 13,950 D — —
2 Common Common Stock 2026-05-13 F D 247 $30.21 13,703 D — — (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.
3 Derivative Restricted Stock Unit 2026-05-13 M D 737 $0.00 1,473 D — · — to 2028-05-13 737 Common Stock (F3) Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. (F4) The restricted stock units vest in three equal installments, beginning on the first anniversary of the grant date and ending on May 13, 2028.