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United States Oil & Gas Related Equipment and Services

NPK International Inc (NPKI)

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Over the last 90 days, NPK International Inc. has seen 12 insider transactions, all of which were sales totaling approximately $8.73 million. Notable sales include those by Matthew Lanigan, President & CEO, and Gregg Piontek, Senior Vice President and CFO. The company's stock has experienced a 9.1% increase in the past 90 days.
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Ticker: NPKI Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Briggs Lori
VP & President, Ind. Solutions
1 sale — total 100,000 USD
Planned sale 8 Jun 2026
Value US$2,106,351.11 | Price 487.04 | Shares 60,007
Proposed sale 8 Jun 2026
Value US$4,093,696.27 | Price 437.39 | Shares 44,741
Planned sale 3 Jun 2026
Value US$100,000.00 | Price 14.43 | Shares 1,000
Planned sale 3 Jun 2026
Value US$100,000.00 | Price 14.43 | Shares 1,000
Proposed sale 3 Jun 2026
Value US$100,000.00 | Price 14.59 | Shares 1,000
Planned sale 2 Jun 2026
Value US$100,000.00 | Price 14.58 | Shares 1,000
Proposed sale 2 Jun 2026
Value US$100,000.00 | Price 14.31 | Shares 1,000
Planned sale 15 May 2026
Value US$30,802.32 | Price 15.30 | Shares 2,013
Proposed sale 15 May 2026
Value US$31,624.23 | Price 15.71 | Shares 2,013
Planned sale 9 Apr 2026
Value US$225,675.00 | Price 15.05 | Shares 15,000
Planned sale 1 Apr 2026
Value US$507,864.00 | Price 14.51 | Shares 35,000
Planned sale 25 Mar 2026
Value US$225,384.00 | Price 15.03 | Shares 15,000
Planned sale 16 Mar 2026
Value US$13,560.00 | Price 13.56 | Shares 1,000
Planned sale 6 Mar 2026
Value US$149,303.43 | Price 13.34 | Shares 11,193
Proposed sale 6 Mar 2026
Value US$168,507.26 | Price 13.82 | Shares 12,193
Planned sale 4 Mar 2026
Value US$490,591.50 | Price 14.02 | Shares 35,000
Planned sale 4 Mar 2026
Value US$1,037,464.46 | Price 14.10 | Shares 73,590
Proposed sale 4 Mar 2026
Value US$2,376,447.10 | Price 13.69 | Shares 173,590
Planned sale 23 Feb 2026
Value US$28,796.37 | Price 14.31 | Shares 2,013
Planned sale 24 Nov 2025
Value US$24,156.20 | Price 12.00 | Shares 2,013
Proposed sale 24 Nov 2025
Value US$46,379.52 | Price 11.52 | Shares 4,026
Planned sale 1 Oct 2025
Value US$116,352.18 | Price 11.51 | Shares 10,108
Proposed sale 1 Oct 2025
Value US$114,321.48 | Price 11.31 | Shares 10,108
Planned sale 3 Sep 2025
Value US$10,380.00 | Price 10.38 | Shares 1,000
Planned sale 25 Aug 2025
Value US$20,796.50 | Price 10.33 | Shares 2,013
Sale 22 Aug 2025
Value US$712,536.21 | Price 10.34 | Shares 68,896
Proposed sale 22 Aug 2025
Value US$698,960.00 | Price 10.00 | Shares 69,896
Planned sale 11 Aug 2025
Value US$76,147.56 | Price 9.51 | Shares 8,005
Planned sale 9 Jul 2025
Value US$68,583.64 | Price 8.57 | Shares 8,005
Planned sale 16 Jun 2025
Value US$17,315.02 | Price 8.60 | Shares 2,013
Proposed sale 16 Jun 2025
Value US$33,778.14 | Price 8.39 | Shares 4,026
Planned sale 6 Jun 2025
Value US$81,324.37 | Price 8.38 | Shares 9,704
Proposed sale 6 Jun 2025
Value US$214,969.04 | Price 8.36 | Shares 25,714
Buy 19 May 2025
Value US$31,680.00 | Price 7.92 | Shares 4,000
Buy 8 May 2025
Value US$99,997.50 | Price 8.00 | Shares 12,500
Buy 5 Mar 2025
Value US$53,800.00 | Price 5.38 | Shares 10,000
Buy 21 Aug 2023
Value US$7,241.00 | Price 5.57 | Shares 1,300
Buy 16 Aug 2023
Value US$42,180.00 | Price 5.27 | Shares 8,000
Buy 15 Mar 2023
Value US$20,250.00 | Price 4.05 | Shares 5,000
Buy 15 Mar 2023
Value US$20,000.00 | Price 4.00 | Shares 5,000
Buy 9 Dec 2022
Value US$20,898.98 | Price 3.98 | Shares 5,251
Buy 21 Nov 2022
Value US$118,308.00 | Price 3.94 | Shares 30,000
Buy 21 Nov 2022
Value US$18,200.00 | Price 3.64 | Shares 5,000
Buy 18 Nov 2022
Value US$15,800.00 | Price 3.95 | Shares 4,000
Buy 16 Nov 2022
Value US$3,975.40 | Price 3.98 | Shares 1,000
Buy 10 Nov 2022
Value US$19,740.50 | Price 3.95 | Shares 5,000
Buy 18 Aug 2022
Value US$11,049.64 | Price 2.91 | Shares 3,800
Buy 17 Aug 2022
Value US$107,528.64 | Price 2.66 | Shares 40,400
Buy 16 Aug 2022
Value US$39,850.50 | Price 2.66 | Shares 15,000
Buy 16 Aug 2022
Value US$90,550.79 | Price 2.68 | Shares 33,828
Buy 15 Aug 2022
Value US$41,374.12 | Price 2.69 | Shares 15,375
Buy 5 Aug 2022
Value US$25,611.00 | Price 2.56 | Shares 10,000
Buy 5 Aug 2022
Value US$48,434.80 | Price 2.55 | Shares 19,000
Buy 5 Aug 2022
Value US$25,487.00 | Price 2.55 | Shares 10,000
Buy 12 May 2022
Value US$68,159.78 | Price 3.54 | Shares 19,252
Buy 9 May 2022
Value US$145,021.80 | Price 3.45 | Shares 42,000
Buy 6 May 2022
Value US$98,055.44 | Price 3.71 | Shares 26,450
Buy 16 Nov 2020
Value US$9,717.75 | Price 1.30 | Shares 7,500
Buy 16 Nov 2020
Value US$48,146.25 | Price 1.28 | Shares 37,500
Buy 13 Nov 2020
Value US$14,370.00 | Price 1.15 | Shares 12,500
Buy 11 Nov 2020
Value US$16,200.00 | Price 1.08 | Shares 15,000
Buy 12 May 2020
Value US$24,600.00 | Price 1.64 | Shares 15,000
Buy 11 May 2020
Value US$7,900.00 | Price 1.58 | Shares 5,000
Buy 8 May 2020
Value US$2,465.00 | Price 1.45 | Shares 1,700
Buy 8 May 2020
Value US$7,008.00 | Price 1.46 | Shares 4,800
Buy 8 May 2020
Value US$8,820.00 | Price 1.47 | Shares 6,000
Buy 8 May 2020
Value US$29,400.00 | Price 1.47 | Shares 20,000
Sale 27 Nov 2019
Value US$37,274.34 | Price 6.07 | Shares 6,145
Buy 19 Nov 2019
Value US$87,540.00 | Price 5.84 | Shares 15,000
Planned sale 5 Apr 2019
Value US$1,011,626.50 | Price 9.50 | Shares 106,487
Planned sale 1 Apr 2019
Value US$1,841,920.00 | Price 9.21 | Shares 200,000
Buy 20 Nov 2018
Value US$9,958.00 | Price 7.66 | Shares 1,300
Sale 4 May 2018
Value US$494,166.48 | Price 10.40 | Shares 47,495
Sale 4 May 2018
Value US$459,252.50 | Price 10.50 | Shares 43,750
Sale 3 May 2018
Value US$770,205.00 | Price 10.27 | Shares 75,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-09 2026-06-08 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
60,007 +31.9%
487.04
US$2,106,351 		60,007 +31.9% 487.04 US$2,106,351
2026-06-08 2026-06-08 PrS Proposed sale
LORI BRIGGS

Officer

Officer
44,741
437.39
US$4,093,696 		44,741 437.39 US$4,093,696
2026-06-05 2026-06-03 PlS Planned sale
2.4
LANIGAN MATTHEW

President & CEO

Executive Director
35,358 -20.0%
92.72
US$3,390,152 		35,358 -20.0% 92.72 US$3,390,152
2026-06-05 2026-06-03 PlS Planned sale
2.4
LANIGAN MATTHEW

President & CEO

Executive Director
1,000 -39.7%
14.43
US$100,000 		1,000 -39.7% 14.43 US$100,000
2026-06-03 2026-06-03 PrS Proposed sale
2.4
MATTHEW LANIGAN

Director; Officer

Executive Director
1,000
14.59
US$100,000 		1,000 14.59 US$100,000
2026-06-03 2026-06-02 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
1,000 -3.9%
14.58
US$100,000 		1,000 -3.9% 14.58 US$100,000
2026-06-02 2026-06-02 PrS Proposed sale
LORI BRIGGS

Officer

Officer
1,000
14.31
US$100,000 		1,000 14.31 US$100,000
2026-05-19 2026-05-15 PlS Planned sale
1.8
Lewis Michael A
Non-Executive Director
2,013 -1.5%
15.30
US$30,802 		2,013 -1.5% 15.30 US$30,802
2026-05-15 2026-05-15 PrS Proposed sale
1.8
MICHAEL LEWIS

Director

Non-Executive Director
2,013
15.71
US$31,624 		2,013 15.71 US$31,624
2026-04-10 2026-04-09 PlS Planned sale
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
15,000 -1.8%
15.05
US$225,675 		15,000 -1.8% 15.05 US$225,675
2026-04-03 2026-04-01 PlS Planned sale
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
35,000 -4.0%
14.51
US$507,864 		35,000 -4.0% 14.51 US$507,864
2026-03-26 2026-03-25 PlS Planned sale
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
15,000 -1.7%
15.03
US$225,384 		15,000 -1.7% 15.03 US$225,384
2026-03-18 2026-03-16 PlS Planned sale
Fruge Mary Celeste

VP, General Counsel

Officer
1,000 -0.4%
13.56
US$13,560 		1,000 -0.4% 13.56 US$13,560
2026-03-10 2026-03-06 PlS Planned sale
Fruge Mary Celeste

VP, General Counsel

Officer
11,193 -4.0%
13.34
US$149,303 		11,193 -4.0% 13.34 US$149,303
2026-03-06 2026-03-06 PrS Proposed sale
MARY C FRUGE

Officer

Officer
12,193
13.82
US$168,507 		12,193 13.82 US$168,507
2026-03-05 2026-03-04 PlS Planned sale
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
35,000 -3.8%
14.02
US$490,592 		35,000 -3.8% 14.02 US$490,592
2026-03-05 2026-03-04 PlS Planned sale
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
73,590 -7.4%
14.10
US$1,037,464 		73,590 -7.4% 14.10 US$1,037,464
2026-03-04 2026-03-04 PrS Proposed sale
4.1
GREGG PIONTEK

Officer

Officer
173,590
13.69
US$2,376,447 		173,590 13.69 US$2,376,447
2026-02-25 2026-02-23 PlS Planned sale
1.8
Lewis Michael A
Non-Executive Director
2,013 -1.5%
14.31
US$28,796 		2,013 -1.5% 14.31 US$28,796
2025-11-25 2025-11-24 PlS Planned sale
1.8
Lewis Michael A
Non-Executive Director
2,013 -1.5%
12.00
US$24,156 		2,013 -1.5% 12.00 US$24,156
2025-11-24 2025-11-24 PrS Proposed sale
1.8
MICHAEL LEWIS

Director

Non-Executive Director
4,026
11.52
US$46,380 		4,026 11.52 US$46,380
2025-10-03 2025-10-01 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
10,108 -4.0%
11.51
US$116,352 		10,108 -4.0% 11.51 US$116,352
2025-10-01 2025-10-01 PrS Proposed sale
LORI BRIGGS

Officer

Officer
10,108
11.31
US$114,321 		10,108 11.31 US$114,321
2025-09-04 2025-09-03 PlS Planned sale
2.4
LANIGAN MATTHEW

President & CEO

Executive Director
1,000 -0.1%
10.38
US$10,380 		1,000 -0.1% 10.38 US$10,380
2025-08-26 2025-08-25 PlS Planned sale
1.8
Lewis Michael A
Non-Executive Director
2,013 -1.5%
10.33
US$20,797 		2,013 -1.5% 10.33 US$20,797
2025-08-26 2025-08-22 S Sale
2.4
LANIGAN MATTHEW

President & CEO

Executive Director
68,896 -5.9%
10.34
US$712,536 		68,896 -5.9% 10.34 US$712,536
2025-08-22 2025-08-22 PrS Proposed sale
2.4
MATTHEW LANIGAN

Director; Officer

Executive Director
69,896
10.00
US$698,960 		69,896 10.00 US$698,960
2025-08-12 2025-08-11 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
8,005 -3.1%
9.51
US$76,148 		8,005 -3.1% 9.51 US$76,148
2025-07-10 2025-07-09 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
8,005 -3.0%
8.57
US$68,584 		8,005 -3.0% 8.57 US$68,584
2025-06-17 2025-06-16 PlS Planned sale
1.8
Lewis Michael A
Non-Executive Director
2,013 -1.4%
8.60
US$17,315 		2,013 -1.4% 8.60 US$17,315
2025-06-16 2025-06-16 PrS Proposed sale
1.8
MICHAEL LEWIS

Director

Non-Executive Director
4,026
8.39
US$33,778 		4,026 8.39 US$33,778
2025-06-10 2025-06-06 PlS Planned sale
Briggs Lori

VP & President, Ind. Solutions

Officer
9,704 -3.5%
8.38
US$81,324 		9,704 -3.5% 8.38 US$81,324
2025-06-06 2025-06-06 PrS Proposed sale
LORI A BRIGGS

Officer

Officer
25,714
8.36
US$214,969 		25,714 8.36 US$214,969
2025-05-20 2025-05-19 B Purchase
3.8
Meer Claudia Michel
Non-Executive Director
4,000 +3.5%
7.92
US$31,680 		4,000 +3.5% 7.92 US$31,680
2025-05-08 2025-05-08 B Purchase
2.9
CUTILLO JOSEPH A
Non-Executive Director
12,500 +inf%
8.00
US$99,998 		12,500 +inf% 8.00 US$99,998
2025-03-06 2025-03-05 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
10,000 +4.5%
5.38
US$53,800 		10,000 +4.5% 5.38 US$53,800
2023-08-22 2023-08-21 B Purchase
3.8
Meer Claudia Michel
Non-Executive Director
1,300 +1.6%
5.57
US$7,241 		1,300 +1.6% 5.57 US$7,241
2023-08-17 2023-08-16 B Purchase
3.8
Meer Claudia Michel
Non-Executive Director
8,000 +10.9%
5.27
US$42,180 		8,000 +10.9% 5.27 US$42,180
2023-03-17 2023-03-15 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
5,000 +3.0%
4.05
US$20,250 		5,000 +3.0% 4.05 US$20,250
2023-03-17 2023-03-15 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
5,000 +3.1%
4.00
US$20,000 		5,000 +3.1% 4.00 US$20,000
2022-12-12 2022-12-09 B Purchase
1.8
Lewis Michael A
Non-Executive Director
5,251 +7.4%
3.98
US$20,899 		5,251 +7.4% 3.98 US$20,899
2022-11-21 2022-11-21 B Purchase
3.3
Young Donald Win
Non-Executive Director
30,000 +13.8%
3.94
US$118,308 		30,000 +13.8% 3.94 US$118,308
2022-11-21 2022-11-21 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
5,000 +3.2%
3.64
US$18,200 		5,000 +3.2% 3.64 US$18,200
2022-11-18 2022-11-18 B Purchase
3.8
Meer Claudia Michel
Non-Executive Director
4,000 +10.7%
3.95
US$15,800 		4,000 +10.7% 3.95 US$15,800
2022-11-18 2022-11-16 B Purchase
3.8
Meer Claudia Michel
Non-Executive Director
1,000 +2.7%
3.98
US$3,975 		1,000 +2.7% 3.98 US$3,975
2022-11-14 2022-11-10 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
5,000 +3.3%
3.95
US$19,740 		5,000 +3.3% 3.95 US$19,740
2022-08-19 2022-08-18 B Purchase
3.3
Young Donald Win
Non-Executive Director
3,800 +1.8%
2.91
US$11,050 		3,800 +1.8% 2.91 US$11,050
2022-08-17 2022-08-17 B Purchase
3.3
Young Donald Win
Non-Executive Director
40,400 +23.3%
2.66
US$107,529 		40,400 +23.3% 2.66 US$107,529
2022-08-17 2022-08-16 B Purchase
3.8
MINGE JOHN C
Non-Executive Director
15,000 +10.9%
2.66
US$39,850 		15,000 +10.9% 2.66 US$39,850
2022-08-17 2022-08-16 B Purchase
3.3
Young Donald Win
Non-Executive Director
33,828 +24.2%
2.68
US$90,551 		33,828 +24.2% 2.68 US$90,551
2022-08-17 2022-08-15 B Purchase
3.3
Young Donald Win
Non-Executive Director
15,375 +12.4%
2.69
US$41,374 		15,375 +12.4% 2.69 US$41,374
2022-08-09 2022-08-05 B Purchase
4.2
Earle Edward Chipman

VP, General Counsel, CAO

Officer
10,000 +4.6%
2.56
US$25,611 		10,000 +4.6% 2.56 US$25,611
2022-08-09 2022-08-05 B Purchase
2.4
LANIGAN MATTHEW

President & CEO

Executive Director
19,000 +7.4%
2.55
US$48,435 		19,000 +7.4% 2.55 US$48,435
2022-08-09 2022-08-05 B Purchase
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
10,000 +18.2%
2.55
US$25,487 		10,000 +18.2% 2.55 US$25,487
2022-05-16 2022-05-12 B Purchase
3.3
Young Donald Win
Non-Executive Director
19,252 +28.1%
3.54
US$68,160 		19,252 +28.1% 3.54 US$68,160
2022-05-10 2022-05-09 B Purchase
3.3
Young Donald Win
Non-Executive Director
42,000 +158.8%
3.45
US$145,022 		42,000 +158.8% 3.45 US$145,022
2022-05-10 2022-05-06 B Purchase
3.3
Young Donald Win
Non-Executive Director
26,450 +inf%
3.71
US$98,055 		26,450 +inf% 3.71 US$98,055
2020-11-17 2020-11-16 B Purchase
3.7
Howes Paul L

President and CEO

Executive Director
7,500 +0.7%
1.30
US$9,718 		7,500 +0.7% 1.30 US$9,718
2020-11-17 2020-11-16 B Purchase
3.7
Howes Paul L

President and CEO

Executive Director
37,500 +3.8%
1.28
US$48,146 		37,500 +3.8% 1.28 US$48,146
2020-11-17 2020-11-13 B Purchase
3.7
Howes Paul L

President and CEO

Executive Director
12,500 +1.3%
1.15
US$14,370 		12,500 +1.3% 1.15 US$14,370
2020-11-12 2020-11-11 B Purchase
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
15,000 +37.5%
1.08
US$16,200 		15,000 +37.5% 1.08 US$16,200
2020-05-12 2020-05-12 B Purchase
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
15,000 +60.0%
1.64
US$24,600 		15,000 +60.0% 1.64 US$24,600
2020-05-12 2020-05-11 B Purchase
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
5,000 +25.0%
1.58
US$7,900 		5,000 +25.0% 1.58 US$7,900
2020-05-12 2020-05-08 B Purchase
4.2
Earle Edward Chipman

VP, General Counsel, CAO

Officer
1,700 +2.8%
1.45
US$2,465 		1,700 +2.8% 1.45 US$2,465
2020-05-12 2020-05-08 B Purchase
4.2
Earle Edward Chipman

VP, General Counsel, CAO

Officer
4,800 +8.6%
1.46
US$7,008 		4,800 +8.6% 1.46 US$7,008
2020-05-12 2020-05-08 B Purchase
4.2
Earle Edward Chipman

VP, General Counsel, CAO

Officer
6,000 +12.0%
1.47
US$8,820 		6,000 +12.0% 1.47 US$8,820
2020-05-12 2020-05-08 B Purchase
4.1
Piontek Gregg

Senior Vice President and CFO

Officer
20,000 +inf%
1.47
US$29,400 		20,000 +inf% 1.47 US$29,400
2019-11-29 2019-11-27 S Sale WHITE DOUGLAS L

Controller, CAO, PAO

Officer
6,145 -11.4%
6.07
US$37,274 		6,145 -11.4% 6.07 US$37,274
2019-11-19 2019-11-19 B Purchase Howes Paul L

President and CEO

Executive Director
15,000 +1.8%
5.84
US$87,540 		15,000 +1.8% 5.84 US$87,540
2019-04-08 2019-04-05 PlS Planned sale
3.7
Howes Paul L

President and CEO

Executive Director
106,487 -14.6%
9.50
US$1,011,626 		106,487 -14.6% 9.50 US$1,011,626
2019-04-03 2019-04-01 PlS Planned sale
3.7
Howes Paul L

President and CEO

Executive Director
200,000 -21.5%
9.21
US$1,841,920 		200,000 -21.5% 9.21 US$1,841,920
2018-11-20 2018-11-20 B Purchase MINGE JOHN C Non-Executive Director
1,300 +9.3%
7.66
US$9,958 		1,300 +9.3% 7.66 US$9,958
2018-05-07 2018-05-04 S Sale Howes Paul L

President and CEO

Executive Director
47,495 -7.8%
10.40
US$494,166 		47,495 -7.8% 10.40 US$494,166
2018-05-07 2018-05-04 S Sale Smith Bruce Campbell

Exec Vice President & Chief

Officer
43,750 -14.0%
10.50
US$459,252 		43,750 -14.0% 10.50 US$459,252
2018-05-03 2018-05-03 S Sale Howes Paul L

President and CEO

Executive Director
75,000 -11.8%
10.27
US$770,205 		75,000 -11.8% 10.27 US$770,205
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