Nichols Benjamin S. 4

4 · COMPASS MINERALS INTERNATIONAL INC · Filed Oct 16, 2025

Form 4

Period: 2025-10-15

Chief Commercial Officer

Transactions

Exercise/Conversion
Common Stock
2025-10-15+7,408→ 15,389 total
Tax Payment
Common Stock
2025-10-15$19.53/sh−2,176$42,497→ 13,213 total
Exercise/Conversion
Restricted Stock Unit
2025-10-15−6,089→ 12,179 total
Exp: 2027-10-15→ Common Stock (6,089 underlying)
Exercise/Conversion
Restricted Stock Unit
2025-10-15−464→ 0 total
Exp: 2025-10-15→ Common Stock (464 underlying)
Exercise/Conversion
Restricted Stock Unit
2025-10-15−855→ 856 total
Exp: 2026-10-15→ Common Stock (855 underlying)

Holdings

Footnotes (6)

[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.

Documents

1 file