LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
NPKICIK 0000071829

NPK International Inc.

52 transactions by 12 insiders, from February 23, 2026 to September 22, 2026.

Transactions
5212 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
$5.6Mopen market
Net
−$5.6Mnet selling

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Gregg PiontekCFO137/13—$2.5M
Mary Celeste FrugeGC126/12—$163K
Lori BriggsPres87/8—$275K
Matthew LaniganCEO71/7—$2.4M
Michael A. LewisDir43/4—$88K
Rose M. RobesonDir21/2—$135K
Alvin James Barton IIIEVP1———
Roderick A. LarsonDir1———
Joseph A. CutilloDir1———
John C. MingeDir1———
Claudia Michel MeerDir1———
Kristen J. PedersonDir1———

All transactions

52 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Alvin James Barton IIIEVPSep 22A12,850$0.00—
Rose M. RobesonDirAug 27SPLAN10,000$13.49$135K
Michael A. LewisDirAug 17SPLAN2,013$14.26$29K
Kristen J. PedersonDirJul 28A6,614$0.00—
Lori BriggsPresJun 8SPLAN8,325$14.75$123K
Matthew LaniganCEOJun 3SPLAN167,375$14.43$2.4M
Gregg PiontekCFODERIVJun 1M40,379$0.00—?
Gregg PiontekCFOJun 1M40,379$0.00—
Gregg PiontekCFOJun 1F11,241$14.31$161K
Gregg PiontekCFOJun 1F15,889$14.31$227K
Gregg PiontekCFOJun 1F8,959$14.31$128K
Matthew LaniganCEODERIVJun 1M100,188$0.00—?
Matthew LaniganCEOJun 1M100,188$0.00—
Matthew LaniganCEOJun 1F39,423$14.31$564K
Matthew LaniganCEOJun 1F27,894$14.31$399K
Matthew LaniganCEOJun 1F22,232$14.31$318K
Mary Celeste FrugeGCDERIVJun 1M17,274$0.00—?
Mary Celeste FrugeGCJun 1M17,274$0.00—
Mary Celeste FrugeGCJun 1F6,797$14.31$97K
Mary Celeste FrugeGCJun 1F5,218$14.31$75K
Mary Celeste FrugeGCJun 1F3,833$14.31$55K
Lori BriggsPresDERIVJun 1MPLAN24,340$0.00—?
Lori BriggsPresJun 2SPLAN10,446$14.58$152K
Lori BriggsPresJun 1MPLAN24,340$0.00—
Lori BriggsPresJun 1FPLAN6,777$14.31$97K
Lori BriggsPresJun 1FPLAN9,577$14.31$137K
Lori BriggsPresJun 1FPLAN5,401$14.31$77K
Gregg PiontekCFOMay 19A34,566$0.00—
Rose M. RobesonDirMay 20A10,862$0.00—
Claudia Michel MeerDirMay 20A8,558$0.00—
John C. MingeDirMay 20A8,558$0.00—
Michael A. LewisDirMay 20A8,558$0.00—
Roderick A. LarsonDirMay 20A8,558$0.00—
Matthew LaniganCEOMay 19A85,771$0.00—
Mary Celeste FrugeGCMay 19A18,002$0.00—
Joseph A. CutilloDirMay 20A8,558$0.00—
Lori BriggsPresMay 19A20,838$0.00—
Michael A. LewisDirMay 15SPLAN2,013$15.30$31K
Gregg PiontekCFOApr 9SPLAN15,000$15.05$226K
Gregg PiontekCFOApr 1SPLAN35,000$14.51$508K
Gregg PiontekCFOMar 25SPLAN15,000$15.03$225K
Mary Celeste FrugeGCDERIVMar 16MPLAN1,000$0.00—?
Mary Celeste FrugeGCMar 16SPLAN1,000$13.56$14K
Mary Celeste FrugeGCMar 16MPLAN1,000$4.32$4K
Mary Celeste FrugeGCDERIVMar 6MPLAN11,193$0.00—?
Mary Celeste FrugeGCMar 6SPLAN11,193$13.34$149K
Mary Celeste FrugeGCMar 6MPLAN11,193$4.32$48K
Gregg PiontekCFODERIVMar 4MPLAN73,590$0.00—?
Gregg PiontekCFOMar 4SPLAN35,000$14.02$491K
Gregg PiontekCFOMar 4SPLAN73,590$14.10$1.0M
Gregg PiontekCFOMar 4MPLAN73,590$4.32$318K
Michael A. LewisDirFeb 23SPLAN2,013$14.31$29K