InsiderClue
← 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%

Individual transactions

10
Insider
Date
Role
Action
Shares
Price
Amount
von Falkenhausen Konstantin
6 May 2025
Director
Buy
1,100
$7.23
$7.95K
Calderon Nancy E.
25 Apr 2025
Director
Buy
1,000
$7.45
$7.45K
Kemp Sarah E.
23 Apr 2024
Director
Buy
1,275
$15.70
$20.02K
Calderon Nancy E.
14 Aug 2023
Director
Buy
500
$13.17
$6.59K
Kemp Sarah E.
18 Apr 2023
Director
Buy
2,473
$12.13
$30.00K
Calderon Nancy E.
30 Jan 2023
Director
Buy
500
$12.92
$6.46K
Kemp Sarah E.
12 Jan 2022
Director
Buy
32
$15.00
$480.00
Kemp Sarah E.
12 Jan 2022
Director
Buy
1,980
$14.91
$29.53K
Calderon Nancy E.
25 Jan 2021
Director
Buy
1,000
$14.78
$14.78K
Calderon Nancy E.
23 Jul 2020
Director
Buy
1,000
$8.60
$8.60K
Show all 46 transactions →

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