Arkolith/Insider Trading/NPKI/Form 4

Lanigan Matthew

President & CEO, DirectorNPK International Inc. (NPKI) · full profile →Form 4 · filed Jun 3, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
5
4 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jun 1, 2026Tax withholding(F)22K$14.31$318K389K
Jun 1, 2026Tax withholding(F)28K$14.31$399K361K
Jun 1, 2026Tax withholding(F)39K$14.31$564K322K
Jun 1, 2026Option exercise(M)100K—$0422K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jun 1, 2026Option exercise(M)100K—$00

Transaction Codes

F
Shares withheld for taxes
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001672978-26-000004) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML