Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

NPK International Inc.

NPKI · NYSE · CIK 0000071829 · Industrials · Building Products & Equipment

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

35 Form 4 transaction lines observed in the same window
7 sales · 28 option, withholding, award, gift or other lines

Last qualifying purchase2025-05-19 · Meer Claudia Michel · $31.7K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Briggs LoriVP & President, Ind. Solutions
○○○▼▼
LANIGAN MATTHEWPresident & CEO
○○○▼
Fruge Mary CelesteVP, General Counsel
○○○
Piontek GreggSenior Vice President and CFO
○○○
Lewis Michael ADirector
▼○▼
ROBESON ROSE MDirector
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 additional owner(s) remain in Form 4 evidence.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-05-19 · Meer Claudia Michel.

Recent Form 4 activity

0Purchases
16Sales
31Other Form 4 lines
30SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING7 sale line(s) · context only
OTHER28 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
2,459,620
Previous report
2,776,208
Avg daily volume
879,055
Days to cover
2.8

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-05-19Meer Claudia MichelPurchase (P)Common Stock4,000USD 7.92USD 31,680SEC filing ↗
2025-05-08CUTILLO JOSEPH APurchase (P)Common Stock12,500USD 8.00USD 100,000SEC filing ↗
2025-03-05MINGE JOHN CPurchase (P)Common Stock10,000USD 5.38USD 53,800SEC filing ↗
2023-08-21Meer Claudia MichelPurchase (P)Common Stock1,300USD 5.57USD 7,241SEC filing ↗
2023-08-16Meer Claudia MichelPurchase (P)Common Stock8,000USD 5.27USD 42,160SEC filing ↗
2023-03-15MINGE JOHN CPurchase (P)Common Stock10,000USD 4.03USD 40,250SEC filing ↗
2022-12-09Lewis Michael APurchase (P)Common Stock5,251USD 3.98USD 20,899SEC filing ↗
2022-11-21Young Donald WinPurchase (P)Common Stock30,000USD 3.94USD 118,200SEC filing ↗
2022-11-21MINGE JOHN CPurchase (P)Common Stock5,000USD 3.64USD 18,200SEC filing ↗
2022-11-18Meer Claudia MichelPurchase (P)Common Stock4,000USD 3.95USD 15,800SEC filing ↗
2022-11-16Meer Claudia MichelPurchase (P)Common Stock1,000USD 3.98USD 3,980SEC filing ↗
2022-11-10MINGE JOHN CPurchase (P)Common Stock5,000USD 3.95USD 19,750SEC filing ↗
2022-08-18Young Donald WinPurchase (P)Common Stock3,800USD 2.91USD 11,058SEC filing ↗
2022-08-17Young Donald WinPurchase (P)Common Stock40,400USD 2.66USD 107,464SEC filing ↗
2022-08-16Young Donald WinPurchase (P)Common Stock33,828USD 2.68USD 90,659SEC filing ↗

Form 4 evidence

47 transaction lines in the latest 365-day window; 364 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Barton III Alvin JamesAward / grant (A)Common Stock12,850USD 0.00USD 0SEC filing ↗
2026-09-09Warren Matthew JamesSale (S)Common Stock2,991USD 13.41USD 40,109SEC filing ↗
2026-08-27ROBESON ROSE MSale (S)Common Stock10,000USD 13.49USD 134,900SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-22Barton III Alvin JamesAward / grant (A)Common Stock12,850USD 0.00USD 0SEC filing ↗
2026-09-09Warren Matthew JamesSale (S)Common Stock2,991USD 13.41USD 40,109SEC filing ↗
2026-08-27ROBESON ROSE MSale (S)Common Stock10,000USD 13.49USD 134,900SEC filing ↗
2026-08-17Lewis Michael ASale (S)Common Stock2,013USD 14.26USD 28,705SEC filing ↗
2026-07-28Pederson Kristen J.Award / grant (A)Common Stock6,614USD 0.00USD 0SEC filing ↗
2026-06-08Briggs LoriSale (S)Common Stock8,325USD 14.75USD 122,794SEC filing ↗
2026-06-03LANIGAN MATTHEWSale (S)Common Stock167,375USD 14.43USD 2,415,221SEC filing ↗
2026-06-02Briggs LoriSale (S)Common Stock10,446USD 14.58USD 152,303SEC filing ↗
2026-06-01Piontek GreggOption exercise / conversion (M)Common Stock40,379USD 0.00USD 0SEC filing ↗
2026-06-01Piontek GreggTax withholding (F)Common Stock36,089USD 14.31USD 516,434SEC filing ↗
2026-06-01LANIGAN MATTHEWOption exercise / conversion (M)Common Stock100,188USD 0.00USD 0SEC filing ↗
2026-06-01LANIGAN MATTHEWTax withholding (F)Common Stock89,549USD 14.31USD 1,281,446SEC filing ↗
2026-06-01Fruge Mary CelesteOption exercise / conversion (M)Common Stock17,274USD 0.00USD 0SEC filing ↗
2026-06-01Fruge Mary CelesteTax withholding (F)Common Stock15,848USD 14.31USD 226,785SEC filing ↗
2026-06-01Briggs LoriOption exercise / conversion (M)Common Stock24,340USD 0.00USD 0SEC filing ↗
2026-06-01Briggs LoriTax withholding (F)Common Stock21,755USD 14.31USD 311,314SEC filing ↗
2026-05-20ROBESON ROSE MAward / grant (A)Common Stock10,862USD 0.00USD 0SEC filing ↗
2026-05-20Meer Claudia MichelAward / grant (A)Common Stock8,558USD 0.00USD 0SEC filing ↗
2026-05-20MINGE JOHN CAward / grant (A)Common Stock8,558USD 0.00USD 0SEC filing ↗
2026-05-20Lewis Michael AAward / grant (A)Common Stock8,558USD 0.00USD 0SEC filing ↗
2026-05-20LARSON RODERICK A.Award / grant (A)Common Stock8,558USD 0.00USD 0SEC filing ↗
2026-05-20CUTILLO JOSEPH AAward / grant (A)Common Stock8,558USD 0.00USD 0SEC filing ↗
2026-05-19Piontek GreggAward / grant (A)Common Stock34,566USD 0.00USD 0SEC filing ↗
2026-05-19LANIGAN MATTHEWAward / grant (A)Common Stock85,771USD 0.00USD 0SEC filing ↗
2026-05-19Fruge Mary CelesteAward / grant (A)Common Stock18,002USD 0.00USD 0SEC filing ↗
2026-05-19Briggs LoriAward / grant (A)Common Stock20,838USD 0.00USD 0SEC filing ↗
2026-05-15Lewis Michael ASale (S)Common Stock2,013USD 15.30USD 30,799SEC filing ↗
2026-04-09Piontek GreggSale (S)Common Stock15,000USD 15.05USD 225,750SEC filing ↗
2026-04-01Piontek GreggSale (S)Common Stock35,000USD 14.51USD 507,850SEC filing ↗
2026-03-25Piontek GreggSale (S)Common Stock15,000USD 15.03USD 225,450SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerNPKI
CIK0000071829
SectorIndustrials
IndustryBuilding Products & Equipment Yahoo Finance
SEC SIC7350 Services-Miscellaneous Equipment Rental & Leasing
ExchangeNYSE

Data coverage

Local Form 4 history364 transaction lines from 2020-02-14 to 2026-09-22
35 P purchase lines · 24 S sale lines · 305 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.