Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| NPK International Inc.NPKI · Entity 4885 | Director · President & CEO | June 03, 2026 | June 05, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
NPK International Inc.
Report date June 03, 2026 · Filed June 05, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 254,699 |
Reported balance
After 2026-06-03 transaction · row 1
1 source rowRow 1 · 2026-06-03 · Sale · Disposed 167,375 · Balance 254,699 F1: The reported sale of 167,375 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 4, 2026. F2: The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $14.29 to $14.56, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4. |
| Common StockSEC Table I · non-derivative | Indirectby Trust | 770,249 |
Reported balance
Holding disclosure · report date 2026-06-03 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 770,249 |
Filing footnotes · ownership attribution and instrument terms
F1: The reported sale of 167,375 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 4, 2026.
F2: The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $14.29 to $14.56, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 18, 2019 Filed May 20, 2019 21:44 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 6,410 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-19-000050 · edgardoc.xml · derivative · entry 3 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 114,938 Underlying: Common Stock · 6,410 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis. F3 · derivative.exercise_date: The restricted stock units vest at a rate of 50% of the shares on May 18, 2019 and 50% of the shares on May 18, 2021. F3 · derivative.expiration_date: The restricted stock units vest at a rate of 50% of the shares on May 18, 2019 and 50% of the shares on May 18, 2021. Read SEC document |
| May 18, 2019 Filed May 20, 2019 21:44 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 1,560 | $7.61 | $11,871.60 |
DisclosureSEC source: 0000071829-19-000050 · edgardoc.xml · nonDerivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 44,348 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| May 18, 2019 Filed May 20, 2019 21:44 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 6,410 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-19-000050 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 45,908 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 7,945 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · derivative · entry 6 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 121,348 Underlying: Common Stock · 7,945 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis. F3 · derivative.exercise_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. F3 · derivative.expiration_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 11,218 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · derivative · entry 5 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 129,293 Underlying: Common Stock · 11,218 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis. F3 · derivative.exercise_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. F3 · derivative.expiration_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 1,934 | $10.85 | $20,983.90 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · nonDerivative · entry 4 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 39,498 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 7,945 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · nonDerivative · entry 3 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 41,432 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 2,731 | $10.85 | $29,631.35 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · nonDerivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 33,487 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| June 01, 2018 Filed Jun 5, 2018 18:28 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 11,218 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000102 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 36,218 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 16, 2018 Filed May 18, 2018 19:00 UTC | NPK International Inc. NR · Entity 4885 | GrantRestricted Stock Units · Derivative | 50,000 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000074 · edgardoc.xml · derivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 140,511 Underlying: Common Stock · 50,000 shares Expires not disclosed F2 · derivative.exercise_date: The restricted stock units will vest at a rate of 50% of the shares on June 1, 2020 and 50% of the shares on June 1, 2022. F2 · derivative.expiration_date: The restricted stock units will vest at a rate of 50% of the shares on June 1, 2020 and 50% of the shares on June 1, 2022. Read SEC document |
| May 16, 2018 Filed May 18, 2018 19:00 UTC | NPK International Inc. NR · Entity 4885 | GrantRestricted Stock Units · Derivative | 28,148 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000074 · edgardoc.xml · derivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 90,511 Underlying: Common Stock · 28,148 shares Expires not disclosed F1 · derivative.exercise_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. F1 · derivative.expiration_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. Read SEC document |
| May 02, 2018 Filed May 3, 2018 22:27 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 18,913 | $10.52 | $198,959.09 |
DisclosureSEC source: 0000071829-18-000052 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 25,000 F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.50 to $10.55, inclusive. Read SEC document |
| April 22, 2018 Filed Apr 24, 2018 16:07 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 6,087 | $9.80 | $59,652.60 |
DisclosureSEC source: 0000071829-18-000038 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 43,913 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| August 01, 2017 Filed Aug 2, 2017 18:17 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 34,948 | $0.00 Strike: $4.32 | $0.00 |
DisclosureSEC source: 0000071829-17-000090 · edgardoc.xml · derivative · entry 4 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 69,896 Underlying: Common Stock · 34,948 shares Expires 2026-05-19 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: The options become exercisable in increments of one-third of the shares each year. Read SEC document |
| August 01, 2017 Filed Aug 2, 2017 18:17 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 34,948 | $8.46 | $295,492.33 |
DisclosureSEC source: 0000071829-17-000090 · edgardoc.xml · nonDerivative · entry 3 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.40 to $8.475, inclusive. Read SEC document |
| August 01, 2017 Filed Aug 2, 2017 18:17 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 34,948 | $4.32 | $150,975.36 |
DisclosureSEC source: 0000071829-17-000090 · edgardoc.xml · nonDerivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 84,948 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| August 01, 2017 Filed Aug 2, 2017 18:17 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 5,823 | $8.46 | $49,233.47 |
DisclosureSEC source: 0000071829-17-000090 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Read SEC document |
| June 01, 2017 Filed Jun 2, 2017 22:42 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 7,946 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000066 · edgardoc.xml · derivative · entry 3 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 62,363 Underlying: Common Stock · 7,946 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis. F3 · derivative.exercise_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. F3 · derivative.expiration_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. Read SEC document |
| June 01, 2017 Filed Jun 2, 2017 22:42 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 2,123 | $7.54 | $15,998.08 |
DisclosureSEC source: 0000071829-17-000066 · edgardoc.xml · nonDerivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 55,823 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| June 01, 2017 Filed Jun 2, 2017 22:42 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 7,946 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000066 · edgardoc.xml · nonDerivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 57,946 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 18, 2017 Filed May 18, 2017 22:51 UTC | NPK International Inc. NR · Entity 4885 | GrantRestricted Stock Units · Derivative | 12,820 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001672978-17-000002 · edgardoc.xml · derivative · entry 2 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 70,309 Underlying: Common Stock · 12,820 shares Expires not disclosed F2 · derivative.exercise_date: The restricted stock units will vest at a rate of 50% of the shares on the second anniversary of the date of grant and 50% of the shares on the fourth anniversary of the date of grant. F2 · derivative.expiration_date: The restricted stock units will vest at a rate of 50% of the shares on the second anniversary of the date of grant and 50% of the shares on the fourth anniversary of the date of grant. Read SEC document |
| May 18, 2017 Filed May 18, 2017 22:51 UTC | NPK International Inc. NR · Entity 4885 | GrantRestricted Stock Units · Derivative | 33,653 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001672978-17-000002 · edgardoc.xml · derivative · entry 1 LANIGAN MATTHEW · CIK 0001672978 · VP and Pres of NMIS 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 57,489 Underlying: Common Stock · 33,653 shares Expires not disclosed F1 · derivative.exercise_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. F1 · derivative.expiration_date: The restricted stock units vest in increments of one-third of the shares on June 1 of each year. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.