RN
Richard Nigon
Director

Richard Nigon insider trades: Northern Technologies International (NTIC) stock buys and sales

Director, Northern Technologies International Last trade Jul 20, 2026 113 Form 4 filings
$96K
Sold, last 12 months
1 sale
$0
Bought, last 12 months
0 buys
28
Open-market trades
since 2008
7
Companies
last trade 2026

Trades on the price chart

Daily close, with an arrow on each day they bought or sold

Companies

Where Richard reports to the SEC

and 1 more company

Open-market buys and sales

28 trades reported on SEC Form 4, newest first

DateStockTypeValue
Jul 20, 2026NTIC↓ Sell$96K
Jul 27, 2023NTIC↓ Sell$22K
Sep 9, 2022CELC↑ Buy$45K
May 25, 2022CELC↑ Buy$4K
Sep 10, 2019TCMD↓ Sell$493K
Sep 5, 2019TCMD↓ Sell$96K
May 15, 2019TCMD↓ Sell$755K
Sep 11, 2018CELC↑ Buy$217K
May 31, 2018CELC↑ Buy$190K
Nov 28, 2017CELC↑ Buy$131K
Nov 21, 2017CELC↑ Buy$147K
Mar 13, 2017TCMD↑ Buy$402K
Sep 14, 2016TCMD↑ Buy$154K
Sep 14, 2016TCMD↑ Buy$86K
Sep 14, 2016TCMD↑ Buy$76K
Nov 4, 2015VASC↓ Sell$259K
May 28, 2015VASC↓ Sell$196K
Nov 26, 2014VASC↑ Buy$77K
Feb 25, 2014VASC↑ Buy$26K
Feb 20, 2014VASC↓ Sell$201K
May 1, 2013VASC↑ Buy$47K
Apr 22, 2013NTIC↑ Buy$22K
Feb 19, 2013VASC↓ Sell$61K
May 23, 2012VASC↑ Buy$49K
Apr 20, 2012NTIC↑ Buy$39K
Aug 27, 2010NTIC↑ Buy$21K
Aug 18, 2010VASC↑ Buy$24K
Feb 28, 2008VASC↑ Buy$31K

Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.

About Richard Nigon's insider trades

Richard Nigon is a director at Northern Technologies International (NTIC). Since Feb 28, 2008, Richard has reported 19 open-market purchases worth $1.8M and 9 sales worth $2.2M on SEC Form 4. In the last 12 months: 1 sale ($96K).

Their filings also include grants and awards (65 filings), option exercises (18 filings), shares withheld for taxes (10 filings), gifts (5 filings). These aren't open-market trades and aren't counted above.

How to read insider trades

Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every NTIC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.