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NORTHERN TECHNOLOGIES INTERNATIONAL CORP

NTIC Clue Score41
United States Fiscal year ends August CIK 0000875582
$7.69 +0.39% Close, 9 Oct 2026

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
7.69 on 9 Oct 2026
10 9 7 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $7.79 14 Oct 2025 $7.69 15 Oct 2025 $7.73 16 Oct 2025 $7.63 17 Oct 2025 $7.42 20 Oct 2025 $7.46 21 Oct 2025 $7.53 22 Oct 2025 $7.58 23 Oct 2025 $7.80 24 Oct 2025 $7.81 27 Oct 2025 $7.65 28 Oct 2025 $7.67 29 Oct 2025 $7.66 30 Oct 2025 $7.57 31 Oct 2025 $7.43 3 Nov 2025 $7.48 4 Nov 2025 $8.22 5 Nov 2025 $8.11 6 Nov 2025 $8.10 7 Nov 2025 $8.10 10 Nov 2025 $8.10 11 Nov 2025 $8.11 12 Nov 2025 $8.14 13 Nov 2025 $8.06 14 Nov 2025 $8.06 17 Nov 2025 $7.95 18 Nov 2025 $7.48 19 Nov 2025 $7.44 20 Nov 2025 $7.52 21 Nov 2025 $7.53 24 Nov 2025 $7.48 25 Nov 2025 $7.48 26 Nov 2025 $7.47 28 Nov 2025 $7.44 1 Dec 2025 $7.40 2 Dec 2025 $7.36 3 Dec 2025 $7.40 4 Dec 2025 $7.40 5 Dec 2025 $7.38 8 Dec 2025 $7.40 9 Dec 2025 $7.53 10 Dec 2025 $7.35 11 Dec 2025 $7.45 12 Dec 2025 $7.46 15 Dec 2025 $7.56 16 Dec 2025 $7.81 17 Dec 2025 $7.75 18 Dec 2025 $7.80 19 Dec 2025 $7.84 22 Dec 2025 $7.70 23 Dec 2025 $7.52 24 Dec 2025 $7.69 26 Dec 2025 $7.57 29 Dec 2025 $7.50 30 Dec 2025 $7.55 31 Dec 2025 $7.83 2 Jan 2026 $8.12 5 Jan 2026 $8.66 6 Jan 2026 $8.91 7 Jan 2026 $8.74 8 Jan 2026 $8.69 9 Jan 2026 $8.75 12 Jan 2026 $9.21 13 Jan 2026 $8.96 14 Jan 2026 $9.56 15 Jan 2026 $9.57 16 Jan 2026 $9.34 20 Jan 2026 $9.06 21 Jan 2026 $9.07 22 Jan 2026 $9.89 23 Jan 2026 $9.58 26 Jan 2026 $9.20 27 Jan 2026 $9.11 28 Jan 2026 $9.01 29 Jan 2026 $9.09 30 Jan 2026 $9.06 2 Feb 2026 $8.80 3 Feb 2026 $9.02 4 Feb 2026 $8.92 5 Feb 2026 $8.83 6 Feb 2026 $9.09 9 Feb 2026 $8.75 10 Feb 2026 $8.59 11 Feb 2026 $8.56 12 Feb 2026 $8.87 13 Feb 2026 $9.03 17 Feb 2026 $9.25 18 Feb 2026 $8.99 19 Feb 2026 $9.22 20 Feb 2026 $9.10 23 Feb 2026 $9.05 24 Feb 2026 $8.75 25 Feb 2026 $8.76 26 Feb 2026 $8.87 27 Feb 2026 $8.90 2 Mar 2026 $9.02 3 Mar 2026 $8.90 4 Mar 2026 $8.78 5 Mar 2026 $8.65 6 Mar 2026 $8.63 9 Mar 2026 $8.76 10 Mar 2026 $8.66 11 Mar 2026 $8.43 12 Mar 2026 $8.40 13 Mar 2026 $8.68 16 Mar 2026 $8.25 17 Mar 2026 $8.24 18 Mar 2026 $8.24 19 Mar 2026 $8.51 20 Mar 2026 $8.46 23 Mar 2026 $8.40 24 Mar 2026 $8.60 25 Mar 2026 $8.47 26 Mar 2026 $8.40 27 Mar 2026 $8.26 30 Mar 2026 $8.33 31 Mar 2026 $8.24 1 Apr 2026 $8.10 2 Apr 2026 $7.92 6 Apr 2026 $8.10 7 Apr 2026 $8.10 8 Apr 2026 $8.00 9 Apr 2026 $8.01 10 Apr 2026 $8.00 13 Apr 2026 $8.11 14 Apr 2026 $8.05 15 Apr 2026 $8.08 16 Apr 2026 $8.21 17 Apr 2026 $8.11 20 Apr 2026 $8.08 21 Apr 2026 $8.02 22 Apr 2026 $8.03 23 Apr 2026 $8.00 24 Apr 2026 $8.02 27 Apr 2026 $8.03 28 Apr 2026 $8.03 29 Apr 2026 $7.96 30 Apr 2026 $8.00 1 May 2026 $7.95 4 May 2026 $7.90 5 May 2026 $8.03 6 May 2026 $8.00 7 May 2026 $7.99 8 May 2026 $7.96 11 May 2026 $7.97 12 May 2026 $7.99 13 May 2026 $8.00 14 May 2026 $7.98 15 May 2026 $7.90 18 May 2026 $7.90 19 May 2026 $7.90 20 May 2026 $8.00 21 May 2026 $7.99 22 May 2026 $8.00 26 May 2026 $7.91 27 May 2026 $7.95 28 May 2026 $8.06 29 May 2026 $8.00 1 Jun 2026 $8.06 2 Jun 2026 $8.00 3 Jun 2026 $7.95 4 Jun 2026 $7.88 5 Jun 2026 $8.00 8 Jun 2026 $8.03 9 Jun 2026 $8.01 10 Jun 2026 $7.97 11 Jun 2026 $8.10 12 Jun 2026 $8.05 15 Jun 2026 $8.02 16 Jun 2026 $8.06 17 Jun 2026 $8.10 18 Jun 2026 $8.04 22 Jun 2026 $8.21 23 Jun 2026 $8.25 24 Jun 2026 $8.31 25 Jun 2026 $8.36 26 Jun 2026 $8.59 29 Jun 2026 $8.83 30 Jun 2026 $8.56 1 Jul 2026 $8.79 2 Jul 2026 $8.63 6 Jul 2026 $8.86 7 Jul 2026 $8.80 8 Jul 2026 $8.58 9 Jul 2026 $8.26 10 Jul 2026 $8.15 13 Jul 2026 $8.10 14 Jul 2026 $8.10 15 Jul 2026 $8.20 16 Jul 2026 $8.13 17 Jul 2026 $8.09 20 Jul 2026 $8.00 21 Jul 2026 $8.01 22 Jul 2026 $8.08 23 Jul 2026 $8.00 24 Jul 2026 $8.04 27 Jul 2026 $8.03 28 Jul 2026 $8.05 29 Jul 2026 $7.97 30 Jul 2026 $7.98 31 Jul 2026 $8.02 3 Aug 2026 $8.41 4 Aug 2026 $8.51 5 Aug 2026 $8.48 6 Aug 2026 $8.19 7 Aug 2026 $8.42 10 Aug 2026 $8.11 11 Aug 2026 $8.02 12 Aug 2026 $8.09 13 Aug 2026 $8.08 14 Aug 2026 $7.99 17 Aug 2026 $8.05 18 Aug 2026 $8.05 19 Aug 2026 $8.05 20 Aug 2026 $8.14 21 Aug 2026 $8.09 24 Aug 2026 $8.06 25 Aug 2026 $8.05 26 Aug 2026 $8.11 27 Aug 2026 $8.07 28 Aug 2026 $8.13 31 Aug 2026 $8.01 1 Sep 2026 $8.00 2 Sep 2026 $7.90 3 Sep 2026 $8.03 4 Sep 2026 $7.99 8 Sep 2026 $7.90 9 Sep 2026 $7.59 10 Sep 2026 $7.90 11 Sep 2026 $8.12 14 Sep 2026 $8.05 15 Sep 2026 $7.96 16 Sep 2026 $7.72 17 Sep 2026 $7.91 18 Sep 2026 $7.55 21 Sep 2026 $7.89 22 Sep 2026 $7.95 23 Sep 2026 $7.86 24 Sep 2026 $7.85 25 Sep 2026 $7.80 28 Sep 2026 $7.80 29 Sep 2026 $7.80 30 Sep 2026 $7.78 1 Oct 2026 $7.71 2 Oct 2026 $7.70 5 Oct 2026 $7.70 6 Oct 2026 $7.81 7 Oct 2026 $7.65 8 Oct 2026 $7.66 9 Oct 2026 $7.69 NIGON RICHARD Director Sold at will $96.05K 20 Jul 2026 · at $8.00 · 20.3% of stake LYNCH G PATRICK President and CEO Sold at will $16.20 29 Jul 2026 · at $8.10 · 0.0% of stake LYNCH G PATRICK President and CEO Sold at will $128.51K 30 Jul 2026 · at $8.00 · 13.2% of stake
0 buys3 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Aug 2025, as filed
Revenue
$84.23M
Net income
$17.62K
Free cash flow
$916.52K
Gross margin
37.6%
Operating margin
3.1%
Net margin
0.0%
Return on equity
0.0%
Return on capital
2.8%
Revenue growth, 1 yr
-1.0%
Revenue growth, 5 yr
12.1% a year

Revenue and profit

Fiscal years, as filed with the SEC · point at a year for the detail
Full statements →
48M -1M FY20 Fiscal year 2020 Revenue $47.64M Net income $1.34M Margin -2.8% 56M 6M FY21 Fiscal year 2021 Revenue $56.49M Net income $6.28M Margin 11.1% · growth +18.6% 74M 6M FY22 Fiscal year 2022 Revenue $74.16M Net income $6.32M Margin 8.5% · growth +31.3% 80M 3M FY23 Fiscal year 2023 Revenue $79.90M Net income $2.91M Margin 3.6% · growth +7.7% 85M 5M FY24 Fiscal year 2024 Revenue $85.06M Net income $5.41M Margin 6.4% · growth +6.5% 84M 18K FY25 Fiscal year 2025 Revenue $84.23M Net income $17.62K Margin 0.0% · growth -1.0%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
30 Jul 2026 LYNCH G PATRICK
President and CEO
Sold at will $128.51K 13.2%
29 Jul 2026 LYNCH G PATRICK
President and CEO
Sold at will $16.20 0.0%
20 Jul 2026 NIGON RICHARD
Director
Sold at will $96.05K 20.3%
6 May 2025 von Falkenhausen Konstantin
Director
Bought $7.95K 6.4%
25 Apr 2025 Calderon Nancy E.
Director
Bought $7.45K 14.4%
23 Apr 2024 Kemp Sarah E.
Director
Bought $20.02K 28.4%