Richard Nigon

Companies

• Celcuity Inc.Board member Sep 19, 2017 to now¹
• NORTHERN TECHNOLOGIES INTERNATIONAL CORPBoard member Feb 2, 2010 to now²
• TACTILE SYSTEMS TECHNOLOGY INCBoard member Jul 27, 2016 to May 19, 2021³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CCelcuity Inc. CELC100,865 shares⁴$5.9M at $58.79Jun 5, 2026
• NTNORTHERN TECHNOLOGIES INTERNATIONAL CORP NTIC54,574 shares⁵$420.2K at $7.70Sep 1, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 1, 2026Granted 7,426 shares of NORTHERN TECHNOLOGIES INTERNATIONAL CORP⁵
• Jul 20, 2026Sold 12,000 shares at $8.00 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP⁶
• Jul 20, 2026Exercised options 12,000 shares at $6.70 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP⁶
• Jun 5, 2026Granted 1,530 shares of Celcuity Inc.⁴
• Apr 9, 2026Gift 10,000 shares of Celcuity Inc.⁷
• Dec 15, 2025Gift 19,975 shares of Celcuity Inc.⁸
• Sep 11, 2025Exercised 3,245 shares at $7.56 of Celcuity Inc.⁹
• Sep 11, 2025Exercised 4,672 shares at $7.56 of Celcuity Inc.⁹
• Sep 1, 2025Granted 8,086 shares of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹⁰
• Jul 24, 2025Shares withheld for tax 10,873 shares at $8.20 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹¹
• Jul 24, 2025Exercised options 12,000 shares at $7.43 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹¹
• Aug 1, 2024Shares withheld for tax 7,665 shares at $13.11 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹²
• Aug 1, 2024Exercised options 12,000 shares at $10.05 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹²
• Jun 10, 2024Exercised 5,061 shares at $9.50 of Celcuity Inc.¹³
• Jul 27, 2023Sold 1,847 shares at $12.17 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹⁴
• Jul 26, 2023Shares withheld for tax 7,153 shares at $12.33 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹⁴
• Jul 26, 2023Exercised options 12,000 shares at $7.35 of NORTHERN TECHNOLOGIES INTERNATIONAL CORP¹⁴
• Sep 9, 2022Bought 5,000 shares at $8.99 of Celcuity Inc.¹⁵
• May 25, 2022Bought 754 shares at $5.94 of Celcuity Inc.¹⁶