Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| NPK International Inc.NPKI · Entity 4885 | Senior Vice President and CFO | June 01, 2026 | June 03, 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 01, 2026 · Filed June 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 858,182 |
Ending reported balance
After 2026-06-01 transaction · row 4
4 source rows · reconciled sequenceRow 1 · 2026-06-01 · Tax withholding · Disposed 8,959 · Balance 844,933 F1: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. Row 2 · 2026-06-01 · Tax withholding · Disposed 15,889 · Balance 829,044 F1: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. Row 3 · 2026-06-01 · Tax withholding · Disposed 11,241 · Balance 817,803 F1: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. Row 4 · 2026-06-01 · Exercise / conversion · Acquired 40,379 · Balance 858,182 F2: The restricted stock units vest and convert into shares on a one-for-one basis. |
| Restricted Stock UnitsSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 | Direct | 0 |
Reported balance
After 2026-06-01 transaction · row 6
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 6 · 2026-06-01 · Exercise / conversion · Disposed 40,379 · Balance 0 F2: The restricted stock units vest and convert into shares on a one-for-one basis. F4: Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. |
| Common StockSEC Table I · non-derivative | Indirectby IRA | 65,000 |
Reported balance
Holding disclosure · report date 2026-06-01 · row 5
Holding and transaction disclosures are not merged.
1 source rowRow 5 · Balance 65,000 F3: These shares are indirectly held by Trust. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units.
F2: The restricted stock units vest and convert into shares on a one-for-one basis.
F3: These shares are indirectly held by Trust.
F4: Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares.
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 |
|---|---|---|---|---|---|---|
| June 01, 2018 Filed Jun 5, 2018 18:26 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 14,808 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000098 · edgardoc.xml · nonDerivative · entry 3 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 171,971 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 18:26 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 2,961 | $10.85 | $32,126.85 |
DisclosureSEC source: 0000071829-18-000098 · edgardoc.xml · nonDerivative · entry 2 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 157,163 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 18:26 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 12,161 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000098 · edgardoc.xml · nonDerivative · entry 1 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 160,124 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 | 100,000 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000071 · edgardoc.xml · derivative · entry 2 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 245,148 Underlying: Common Stock · 100,000 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 | 43,948 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-18-000071 · edgardoc.xml · derivative · entry 1 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 145,148 Underlying: Common Stock · 43,948 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 22:18 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 28,100 | $0.00 Strike: $7.89 | $0.00 |
DisclosureSEC source: 0000071829-18-000050 · edgardoc.xml · derivative · entry 5 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 28,100 shares Expires 2018-06-10 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. F3 · derivative.exercise_date: The options become exercisable in increments of one-third of the shares each year. Read SEC document |
| May 02, 2018 Filed May 3, 2018 22:18 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 23,390 | $0.00 Strike: $3.31 | $0.00 |
DisclosureSEC source: 0000071829-18-000050 · edgardoc.xml · derivative · entry 4 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 23,390 shares Expires 2019-06-10 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 four annual installments beginning on the first anniversary of the date of grant. Read SEC document |
| May 02, 2018 Filed May 3, 2018 22:18 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 28,100 | $7.89 | $221,709.00 |
DisclosureSEC source: 0000071829-18-000050 · edgardoc.xml · nonDerivative · entry 3 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 147,963 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 02, 2018 Filed May 3, 2018 22:18 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 51,490 | $10.51 | $540,907.60 |
DisclosureSEC source: 0000071829-18-000050 · edgardoc.xml · nonDerivative · entry 2 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 119,863 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 |
| May 02, 2018 Filed May 3, 2018 22:18 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 23,390 | $3.31 | $77,420.90 |
DisclosureSEC source: 0000071829-18-000050 · edgardoc.xml · nonDerivative · entry 1 Piontek Gregg · CIK 0001418328 · Senior Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 171,353 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 16, 2017 Filed Aug 18, 2017 15:37 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionPerformance Shares · Derivative | 19,819 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000098 · edgardoc.xml · derivative · entry 3 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 66,403 Underlying: Common Stock · 19,819 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. F3 · shares: Represents performance restricted stock units awarded in 2014, the vesting of which was dependent on achievement of certain levels of total shareholder returns (TSR) relative to a peer group established by the Compensation Committee of the Board of Directors. F3 · derivative.expiration_date: Represents performance restricted stock units awarded in 2014, the vesting of which was dependent on achievement of certain levels of total shareholder returns (TSR) relative to a peer group established by the Compensation Committee of the Board of Directors. Read SEC document |
| August 16, 2017 Filed Aug 18, 2017 15:37 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 5,420 | $7.50 | $40,650.00 |
DisclosureSEC source: 0000071829-17-000098 · edgardoc.xml · nonDerivative · entry 2 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 147,963 F2 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of performance shares. Read SEC document |
| August 16, 2017 Filed Aug 18, 2017 15:37 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 19,819 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000098 · edgardoc.xml · nonDerivative · entry 1 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 153,383 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. F1 · shares: Represents shares acquired upon the vesting of performance stock units previously granted to the Reporting Person. Vesting of the award was contingent upon Company's achievement of certain levels of total shareholder return (TSR) relative to a pre-determined industry peer group. Read SEC document |
| June 01, 2017 Filed Jun 2, 2017 22:41 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 22,308 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · derivative · entry 7 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 101,200 Underlying: Common Stock · 22,308 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 22:41 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionRestricted Stock Units · Derivative | 12,162 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · derivative · entry 6 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 123,508 Underlying: Common Stock · 12,162 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 22:41 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 3,326 | $7.54 | $25,063.41 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · nonDerivative · entry 5 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 133,564 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 22:41 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 6,101 | $7.54 | $45,974.70 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · nonDerivative · entry 4 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 136,890 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 22:41 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 22,308 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · nonDerivative · entry 3 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 142,991 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, 2017 Filed Jun 2, 2017 22:41 UTC | NPK International Inc. NR · Entity 4885 | Exercise / conversionCommon Stock | 12,162 | $0.00 | $0.00 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · nonDerivative · entry 2 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 120,683 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, 2017 Filed Jun 2, 2017 22:41 UTC | NPK International Inc. NR · Entity 4885 | Tax withholdingCommon Stock | 2,699 | $7.54 | $20,338.58 |
DisclosureSEC source: 0000071829-17-000064 · edgardoc.xml · nonDerivative · entry 1 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 108,521 F1 · shares: Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted shares. Read SEC document |
| May 19, 2017 Filed May 23, 2017 13:07 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 3,088 | $8.04 | $24,821.04 |
DisclosureSEC source: 0000071829-17-000056 · edgardoc.xml · nonDerivative · entry 2 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 111,220 F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from 8.025 to 8.05, inclusive. Read SEC document |
| May 19, 2017 Filed May 23, 2017 13:07 UTC | NPK International Inc. NR · Entity 4885 | SaleCommon Stock | 31,284 | $8.04 | $251,470.18 |
DisclosureSEC source: 0000071829-17-000056 · edgardoc.xml · nonDerivative · entry 1 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 114,308 F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from 8.025 to 8.05, inclusive. Read SEC document |
| May 18, 2017 Filed May 18, 2017 22:20 UTC | NPK International Inc. NR · Entity 4885 | GrantRestricted Stock Units · Derivative | 44,423 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001357220-17-000004 · edgardoc.xml · derivative · entry 1 Piontek Gregg · CIK 0001418328 · Vice President and CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 135,670 Underlying: Common Stock · 44,423 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.