← All stocks

NORTHERN TECHNOLOGIES INTERNATIONAL CORP

NTIC Net selling
CIK 0000875582 #4488 in the set updated 17 Sep 2026
Bought (120 mo)
$131.85K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$247.05K
$0.00 on a plan · $96.06K straight out of an exercise
Sold at will
$150.98K
2 of 4 sales
Net
−$115.20K
−$19.14K against sales at will

By person

12 insiders · 46 transactions
56.7×

G. Patrick Lynch holds 56.7 times base salary in stock. $29.71M of shares against $523.75K in salary for 2025.

Salary from the company's own proxy. The shares are what G. Patrick Lynch last reported holding, valued at $8.00, the price Common Stock was last bought or sold at on the open market here, on 30 Jul 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
LYNCH G PATRICK
President and CEO
$128.52K (2)
−$128.52K
3,715,286
39.12%
$29.71M
+0.8%
NIGON RICHARD
Director
$118.53K (2) scheduled
−$118.53K
54,574
0.5747%
$436.41K
+117.4%
Kemp Sarah E.
Director
$80.02K (4)
+$80.02K
22,458
0.2365%
$179.59K
Calderon Nancy E.
Director
$43.87K (5)
+$43.87K
20,940
0.2205%
$167.45K
+135,372%
von Falkenhausen Konstantin
Director
$7.95K (1)
+$7.95K
18,219
0.1919%
$145.69K
+1,418%
WOLSFELD MATTHEW C
CFO and Corporate Secretary
170,966
1.80%
$1.37M
+26.8%
Ramdas Gautam
President and CEO
118,932
1.25%
$951.07K
+58.3%
Narayan Ramani
Director
106,763
1.12%
$853.75K
+205.0%
Keong Koh Soo
Director
101,095
1.06%
$808.43K
+244.7%
Pinho Cristina Lucia Duarte
Director
16,698
0.1758%
$133.53K
Lee Sunggyu
Director
9,507
0.1001%
$76.02K
Colwell Barbara D.
Director
1,500
0.0158%
$12.00K
0.0%
Insider
Date
Role
Action
Shares
Price
Amount
WOLSFELD MATTHEW C
1 Jul 2026
CFO and Corporate Secretary
Exercised, kept
11,879
$6.70
$79.59K
NIGON RICHARD
24 Jul 2025
Director
Exercised, kept
12,000
$7.43
$89.16K
LYNCH G PATRICK
26 Aug 2024
President and CEO
Exercised, kept
10,488
$10.05
$105.40K
NIGON RICHARD
1 Aug 2024
Director
Exercised, kept
12,000
$10.05
$120.60K
von Falkenhausen Konstantin
31 Jul 2024
Director
Exercised, kept
8,000
$10.05
$80.40K
WOLSFELD MATTHEW C
15 Jul 2024
CFO and Corporate Secretary
Exercised, kept
7,752
$10.05
$77.91K
von Falkenhausen Konstantin
28 Aug 2023
Director
Exercised, kept
8,000
$7.35
$58.80K
Lee Sunggyu
17 Aug 2023
Director
Exercised, kept
8,000
$7.35
$58.80K
LYNCH G PATRICK
8 Aug 2023
President and CEO
Exercised, kept
11,610
$7.35
$85.33K
NIGON RICHARD
26 Jul 2023
Director
Exercised, kept
12,000
$7.35
$88.20K
WOLSFELD MATTHEW C
11 Jul 2023
CFO and Corporate Secretary
Exercised, kept
8,582
$7.35
$63.08K
von Falkenhausen Konstantin
14 Oct 2022
Director
Exercised, kept
6,000
$5.13
$30.75K
WOLSFELD MATTHEW C
4 Oct 2022
CFO and Corporate Secretary
Exercised, kept
27,218
$5.13
$139.49K
LYNCH G PATRICK
4 Oct 2022
President and CEO
Exercised, kept
36,824
$5.13
$188.72K
Narayan Ramani
29 Sep 2022
Director
Exercised, kept
16,026
$8.24
$132.05K
Narayan Ramani
29 Sep 2022
Director
Exercised, kept
11,737
$10.80
$126.76K
Narayan Ramani
29 Sep 2022
Director
Exercised, kept
8,000
$9.18
$73.40K
Narayan Ramani
29 Sep 2022
Director
Exercised, kept
8,000
$6.70
$53.60K
Narayan Ramani
22 Apr 2022
Director
Exercised, kept
8,000
$7.43
$59.40K
Narayan Ramani
12 Nov 2021
Director
Exercised, kept
8,000
$10.05
$80.40K
Narayan Ramani
12 Nov 2021
Director
Exercised, kept
8,000
$7.35
$58.80K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
16,026
$8.24
$132.05K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
11,737
$10.80
$126.76K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
8,000
$9.18
$73.44K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
8,000
$6.70
$53.60K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
8,000
$7.43
$59.44K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
8,000
$10.05
$80.40K
Keong Koh Soo
7 Jul 2021
Director
Exercised, kept
8,000
$7.35
$58.80K
NIGON RICHARD
7 Sep 2017
Director
Exercised, kept
1,500
$10.25
$15.38K
Narayan Ramani
31 Aug 2017
Director
Exercised, kept
4,000
$10.25
$41.00K
Keong Koh Soo
23 Aug 2017
Director
Exercised, kept
4,000
$10.25
$41.00K
NIGON RICHARD
27 Apr 2017
Director
Exercised, kept
4,000
$10.25
$41.00K

What was left out

Form 4 filings counted 115
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 2
Sales at will 2
Transactions with no price 0
Shares from compensation/vesting 556,726
History held since 6 Sep 2016