Gregg S. Piontek - 01 Jun 2025 Form 4 Insider Report for NPK International Inc. (NPKI)

Role
Senior Vice President and CFO
Signature
By: M. Celeste Fruge For: Gregg S. Piontek
Issuer symbol
NPKI
Transactions as of
01 Jun 2025
Net transactions value
-$340,419
Form type
4
Filing time
03 Jun 2025, 18:21:23 UTC
Previous filing
16 May 2025
Next filing
05 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Piontek Gregg Senior Vice President and CFO 9320 LAKESIDE BOULEVARD, SUITE 100, THE WOODLANDS By: M. Celeste Fruge For: Gregg S. Piontek 03 Jun 2025 0001418328

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NPKI Common Stock Options Exercise $0 +43,790 +5% $0.000000 921,026 01 Jun 2025 Direct F1
transaction NPKI Common Stock Tax liability $139,399 -17,231 -1.9% $8.09 903,795 01 Jun 2025 Direct F2
transaction NPKI Common Stock Tax liability $128,542 -15,889 -1.8% $8.09 887,906 01 Jun 2025 Direct F2
transaction NPKI Common Stock Tax liability $72,478 -8,959 -1% $8.09 878,947 01 Jun 2025 Direct F2
transaction NPKI Common Stock Options Exercise $0 +40,379 +4.6% $0.000000 919,326 01 Jun 2025 Direct F1
holding NPKI Common Stock 65,000 01 Jun 2025 by IRA F3

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 NPKI Restricted Stock Units Options Exercise $0 -43,790 -35% $0.000000 80,758 01 Jun 2025 Common Stock 43,790 $0.000000 Direct F1, F4
transaction NPKI Restricted Stock Units Options Exercise $0 -40,379 -50% $0.000000 40,379 01 Jun 2025 Common Stock 40,379 $0.000000 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units convert into common stock on a one-for-one basis.
F2 Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units.
F3 These shares are indirectly held by Trust.
F4 Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares.