Form4insider filings, from the source

Insider · CIK 0001562252

Konstantin von Falkenhausen

Files at: NTIC. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $10k · 1sales $0 · 0net $10k
$10k$10k$100k$100k$1M$1MbuyssalesJul 23Jul 23Jul 23Jul 24Jul 24Jul 24Jul 25

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jul 24, 2015 PForm 4 →Jul 28, 4:25 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC600$17.02$10,212600— plan?

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 AForm 4 →Sep 3, 4:10 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC15,044——15,044—
Sep 1, 2018 AForm 4 →Sep 5, 5:05 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC2,773——2,773—
Sep 1, 2017 AForm 4 →Sep 5, 4:35 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000——4,000—
Sep 1, 2016 AForm 4 →Sep 6, 5:09 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000——4,000—
Sep 1, 2015 AForm 4 →Sep 3, 5:17 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000——4,000—