Form4insider filings, from the source

Insider · CIK 0001213869

Richard Nigon

Files at: NTIC, CELC, TCMD, VASC. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $1.4M · 6sales $551k · 3net $853k
$10k$10k$100k$100k$1M$1MbuyssalesMay 2015Apr 2017Feb 2019Dec 2020Nov 2022Sep 2024Jul 2026

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 AForm 4 →Sep 3, 4:26 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC7,426——54,574—
Jul 20, 2026 SForm 4 →Jul 21, 4:28 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC12,000$8.00$96,04847,148−20.3%
Jul 20, 2026 MForm 4 →Jul 21, 4:28 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC12,000$6.70$80,40059,148—
Jun 5, 2026 AForm 4 →Jun 9, 6:23 pm EDTCelcuity Inc.CELC1,530——80,565—
Dec 31, 2018 AForm 4 →Jan 3, 2019, 5:27 pm ESTTACTILE SYSTEMS TECHNOLOGY INCTCMD219$45.55$9,97541,143— plan?
Sep 28, 2018 AForm 4 →Oct 2, 4:28 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD140$71.05$9,94740,924— plan?
Sep 11, 2018 PForm 4 →Sep 13, 5:23 pm EDTCelcuity Inc.CELC9,747$22.31$217,45690,278+12.1% plan?
Jun 29, 2018 AForm 4 →Jul 2, 4:15 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD192$52.00$9,98440,784— plan?
May 31, 2018 PForm 4 →Jun 4, 4:27 pm EDTCelcuity Inc.CELC10,000$19.04$190,40080,531+14.2% plan?
May 10, 2018 AForm 4 →May 14, 5:57 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD1,373——40,592— plan?
Mar 30, 2018 AForm 4 →Apr 3, 4:52 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD275$31.80$8,74539,219— plan?
Dec 29, 2017 AForm 4 →Jan 3, 2018, 7:00 pm ESTTACTILE SYSTEMS TECHNOLOGY INCTCMD301——38,944— plan?
Nov 28, 2017 PForm 4 →Nov 29, 5:02 pm ESTCelcuity Inc.CELC7,500$17.48$131,10070,531+11.9% plan?
Nov 20, 2017 PForm 4 →Nov 22, 4:14 pm ESTCelcuity Inc.CELC8,500$17.31$147,15063,031+15.6% plan?
Sep 29, 2017 AForm 4 →Oct 3, 5:06 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD282——38,643— plan?
Sep 7, 2017 MForm 4 →Sep 8, 5:33 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC1,500$10.25$15,37515,300— plan?
Jun 30, 2017 AForm 4 →Jul 5, 4:30 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD306——38,361— plan?
May 9, 2017 AForm 4 →May 11, 9:06 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD2,306——38,055— plan?
Apr 27, 2017 MForm 4 →May 1, 4:17 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000$10.25$41,00013,800— plan?
Mar 31, 2017 AForm 4 →Apr 4, 5:02 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD461$18.95$8,73635,749— plan?
Mar 13, 2017 PForm 4 →Mar 15, 4:33 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD20,000$20.11$402,14835,288+131% plan?
Feb 17, 2017 DForm 4 →Feb 22, 4:28 pm ESTVASCULAR SOLUTIONS INCVASC61,228——0— plan?
Jan 23, 2017 GForm 4 →Jan 25, 4:12 pm ESTVASCULAR SOLUTIONS INCVASC360——61,228— plan?
Dec 30, 2016 AForm 4 →Jan 4, 2017, 4:06 pm ESTTACTILE SYSTEMS TECHNOLOGY INCTCMD533$16.41$8,74715,288— plan?
Dec 13, 2016 GForm 4 →Dec 15, 4:32 pm ESTVASCULAR SOLUTIONS INCVASC2,147——61,588— plan?
Dec 13, 2016 MForm 4 →Dec 15, 4:23 pm ESTTACTILE SYSTEMS TECHNOLOGY INCTCMD6,103$0.68$4,15014,755— plan?
Sep 30, 2016 AForm 4 →Oct 3, 4:37 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD330——8,652— plan?
Sep 13, 2016 PForm 4 →Sep 15, 4:38 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD18,750$16.87$316,33314,471— plan?
Aug 2, 2016 CForm 4 →Aug 4, 4:31 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD9,896——9,896— plan?
Jul 27, 2016 AForm 4 →Jul 29, 4:42 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD5,000——8,322— plan?
Apr 29, 2016 AFForm 4 →May 3, 4:13 pm EDTVASCULAR SOLUTIONS INCVASC2,863$34.95$25,09466,235— plan?
Feb 10, 2016 FMForm 4 →Feb 12, 4:05 pm ESTVASCULAR SOLUTIONS INCVASC12,200$11.06$134,98864,808— plan?
Nov 4, 2015 GForm 4 →Nov 6, 4:16 pm ESTVASCULAR SOLUTIONS INCVASC1,000——57,008— plan?
Nov 4, 2015 SForm 4 →Nov 6, 4:16 pm ESTVASCULAR SOLUTIONS INCVASC8,000$32.40$259,20058,008−12.1% plan?
Aug 17, 2015 FMForm 4 →Aug 18, 4:31 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC6,477$12.05$78,0789,800— plan?
May 28, 2015 SForm 4 →May 29, 4:06 pm EDTVASCULAR SOLUTIONS INCVASC6,000$32.68$196,08065,508−8.39% plan?
Apr 30, 2015 AFForm 4 →May 4, 4:39 pm EDTVASCULAR SOLUTIONS INCVASC3,367$32.06$34,27271,508— plan?
Apr 2, 2015 FMForm 4 →Apr 6, 4:19 pm EDTVASCULAR SOLUTIONS INCVASC12,000$13.32$159,86070,279— plan?
Jan 15, 2015 FMForm 4 →Jan 16, 4:55 pm ESTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC3,389$14.04$47,5888,277— plan?

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jul 20, 2026 MForm 4 →Jul 21, 4:28 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC12,000——0—
Sep 1, 2018 AForm 4 →Sep 5, 4:35 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC3,328——3,328—
May 14, 2018 AForm 4 →May 16, 4:47 pm EDTCelcuity Inc.CELC3,201——3,201—
May 10, 2018 AForm 4 →May 14, 5:57 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD3,713——3,713—
Oct 19, 2017 AForm 4 →Oct 23, 4:20 pm EDTCelcuity Inc.CELC8,200——8,200—
Sep 7, 2017 MForm 4 →Sep 8, 5:33 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC1,500$10.25$15,3750—
Sep 1, 2017 AForm 4 →Sep 5, 4:58 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC6,000——4,000—
May 9, 2017 AForm 4 →May 11, 9:06 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD6,391——6,391—
Apr 27, 2017 MForm 4 →May 1, 4:17 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000$10.25$41,0000—
Feb 17, 2017 DForm 4 →Feb 22, 4:28 pm ESTVASCULAR SOLUTIONS INCVASC60,000$46.81$2,808,8000—
Dec 13, 2016 MForm 4 →Dec 15, 4:23 pm ESTTACTILE SYSTEMS TECHNOLOGY INCTCMD6,103——0—
Sep 1, 2016 AForm 4 →Sep 6, 4:34 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC6,000——4,000—
Aug 2, 2016 CForm 4 →Aug 4, 4:31 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD5,719——0—
Jul 27, 2016 AForm 4 →Jul 29, 4:42 pm EDTTACTILE SYSTEMS TECHNOLOGY INCTCMD14,370——14,370—
Feb 10, 2016 MForm 4 →Feb 12, 4:05 pm ESTVASCULAR SOLUTIONS INCVASC10,000——0—
Sep 1, 2015 AForm 4 →Sep 3, 4:51 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC6,000——4,000—
Aug 17, 2015 MForm 4 →Aug 18, 4:31 pm EDTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC4,000$9.76$39,0400—
Apr 2, 2015 MForm 4 →Apr 6, 4:19 pm EDTVASCULAR SOLUTIONS INCVASC10,000——0—
Jan 15, 2015 MForm 4 →Jan 16, 4:55 pm ESTNORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC2,333——0—