Form4insider filings, from the source

Insider · CIK 0001276802

Kirk M Warshaw

Files at: SOTK, PRTX. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported trades — common stock

No reported common-stock activity in this period.

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 20, 2026 AForm 4 →Aug 24, 4:15 pm EDTSONO TEK CORPSOTK5,396$5.35$28,86912,414—
Feb 8, 2018 AForm 4 →Feb 12, 10:19 am ESTPROTALEX INCPRTX300,000——300,000—
Jul 1, 2015 AForm 4 →Jul 7, 12:51 pm EDTPROTALEX INCPRTX250,000——250,000— late