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RICHARD NIGON

CIK 1213869 · last filed 2026-09-03

RICHARD NIGON is a corporate insider who has filed 111 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing, for NTIC, was dated Sep 3, 2026. Across all open-market trades the lifetime net is −$390.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $10.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$10.75M

Companies

6

Total Filings

111

Lifetime Open-Market Net

-$390.9K

Filer Profile

Reported Address
C/O NORTHERN TECHNOLOGIES INT'L CORP.
4201 WOODLAND ROAD, PO BOX 69
CIRCLE PINES, MN 55014
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
NTIC Director 54,574 $7.99 $436.0K -$36.4K 31 2026-09-03
CELC Director 100,865 $95.70 $9.65M $735.5K 20 2026-06-09
TCMD Director 30,131 $21.87 $659.0K -$625.0K 27 2021-05-19
VASCULAR SOLUTIONS INC (VASC) Delisted Director 61,728 — — -$465.0K 25 2017-01-25
Virtual Radiologic CORP (VRAD) Delisted Director 5,658 — — $0 3 2010-05-17
Restore Medical, Inc. (REST) Delisted Director — — — $0 1 2008-07-16

Recent Filings

111 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-09-03 NTIC Grant (A) +7,426 $0 EDGAR
2026-07-21 NTIC Mixed — -$15.6K EDGAR
2026-07-20 NTIC Notice (144) −12,000 -$96.0K EDGAR
2026-06-09 CELC Grant (A) +1,530 $0 EDGAR
2026-04-13 CELC Gift (G) −10,000 $0 EDGAR
2026-01-09 CELC Gift (G) −19,975 $0 EDGAR
2025-09-15 CELC Exer (X) +7,917 $59.9K EDGAR
2025-09-03 NTIC Grant (A) +8,086 $0 EDGAR
2025-07-28 NTIC Mixed +1,127 $1 EDGAR
2025-05-21 CELC Grant (A) — $0 EDGAR
Showing 1–10 of 111
Page 1 of 12
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.