Matthew Lanigan - Jun 1, 2025 Form 4 Insider Report for NPK International Inc. (NPKI)

Role
President & CEO, Director
Signature
By: M. Celeste Fruge For: Matthew Lanigan
Stock symbol
NPKI
Transactions as of
Jun 1, 2025
Transactions value $
-$844,669
Form type
4
Date filed
6/3/2025, 06:21 PM
Previous filing
May 16, 2025
Next filing
Aug 26, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
LANIGAN MATTHEW President & CEO, Director 9320 LAKESIDE BOULEVARD, SUITE 100, THE WOODLANDS By: M. Celeste Fruge For: Matthew Lanigan 2025-06-03 0001672978

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NPKI Common Stock Options Exercise $0 +109K +10.96% $0.00 1.1M Jun 1, 2025 Direct F1
transaction NPKI Common Stock Options Exercise $0 +100K +9.11% $0.00 1.2M Jun 1, 2025 Direct F1
transaction NPKI Common Stock Tax liability -$180K -22.2K -1.85% $8.09 1.18M Jun 1, 2025 Direct F2
transaction NPKI Common Stock Tax liability -$319K -39.4K -3.35% $8.09 1.14M Jun 1, 2025 Direct F2
transaction NPKI Common Stock Tax liability -$346K -42.8K -3.75% $8.09 1.1M Jun 1, 2025 Direct 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 NPKI Restricted Stock Units Options Exercise $0 -109K -35.16% $0.00 200K Jun 1, 2025 Common Stock 109K $0.00 Direct F1, F3
transaction NPKI Restricted Stock Units Options Exercise $0 -100K -50% $0.00 100K Jun 1, 2025 Common Stock 100K $0.00 Direct F1, F3
* 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 Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares.