Form4insider filings, from the source

Insider · CIK 0001258554

G Patrick Lynch

Files at: NTIC. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $129k · 1net −$129k
$10k$10k$100k$100k$1M$1MbuyssalesJul 28Jul 28Jul 28Jul 29Jul 29Jul 29Jul 30

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jul 29, 2026 SForm 4 →Jul 31, 4:34 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC16,072$8.00$128,523105,284−13.2%
Jul 29, 2026 MForm 4 →Jul 31, 4:34 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC16,072$6.70$107,682121,356—

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 AForm 4 →Sep 4, 7:54 am EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC40,257——40,257— late
Jul 29, 2026 MForm 4 →Jul 31, 4:34 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC16,072——0—
Sep 1, 2018 AForm 4 →Sep 5, 5:23 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC13,798——13,798—
Sep 1, 2017 AForm 4 →Sep 5, 5:37 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC5,852——5,852—
Sep 1, 2016 AForm 4 →Sep 6, 5:32 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC8,036——8,036—
Sep 1, 2015 AForm 4 →Sep 3, 5:37 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC7,287——7,287—