NASDAQ:NTIC | Insider Transactions | NORTHERN TECHNOLOGIES INTERNATIONAL CORP

NTIC Insider Transactions

203 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.

NTIC insiders transaction timeline

PurchaseSale
2006-01-31: 3 sales — STONE MARK J2006-07-25: 2 sales — LYNCH PHILIP M2008-11-28: 9 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2009-12-04: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-01-15: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-01-19: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-08-16: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-08-17: 18 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-08-18: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-08-20: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-08-25: 39 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-08-27: 1 purchase — NIGON RICHARD2010-09-13: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-09-14: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-09-15: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-09-20: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-09-21: 6 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-09-22: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-11-29: 1 sale — STONE MARK J2010-12-01: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-12-02: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-12-03: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2010-12-06: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2010-12-07: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-03-02: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-03-03: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-03-04: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-06-01: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-06-02: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-06-03: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-06-06: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-06-07: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-06-10: 3 sales — LYNCH G PATRICK, INTER ALIA HOLDING CO, Lynch Juliane I2011-08-31: 1 sale — STONE MARK J2011-09-01: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-09-02: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-09-06: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-09-07: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-09-12: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2011-09-13: 3 sales — INTER ALIA HOLDING CO, Lynch Juliane I, LYNCH G PATRICK2012-02-27: 1 sale — STONE MARK J2012-02-28: 1 sale — STONE MARK J2012-04-20: 3 purchases — NIGON RICHARD2012-08-10: 1 sale — STONE MARK J2013-01-29: 1 sale — CHENU PIERRE2013-02-25: 1 sale — CHENU PIERRE2013-04-22: 1 purchase — NIGON RICHARD2013-11-26: 1 sale — CHENU PIERRE2014-04-16: 1 sale — LYNCH G PATRICK2015-04-28: 4 purchases — Colwell Barbara D.2015-07-24: 1 purchase — von Falkenhausen Konstantin2020-07-23: 1 purchase — Calderon Nancy E.2021-01-25: 1 purchase — Calderon Nancy E.2022-01-12: 2 purchases — Kemp Sarah E.2023-01-30: 1 purchase — Calderon Nancy E.2023-04-18: 1 purchase — Kemp Sarah E.2023-07-27: 1 sale — NIGON RICHARD2023-08-14: 1 purchase — Calderon Nancy E.2024-04-23: 1 purchase — Kemp Sarah E.2025-04-25: 1 purchase — Calderon Nancy E.2025-05-06: 1 purchase — von Falkenhausen Konstantin2026-07-20: 1 sale — NIGON RICHARD2026-07-29: 1 sale — LYNCH G PATRICK2026-07-30: 1 sale — LYNCH G PATRICK2006-01-312026-07-30
Insider profileRoleDateTransactionSharesPrice
LYNCH G PATRICKPresident and CEO2026-07-30Sale16,070$7.9967
LYNCH G PATRICKPresident and CEO2026-07-29Sale2$8.1
NIGON RICHARDDirector2026-07-20Sale12,000$8.004
von Falkenhausen KonstantinDirector2025-05-06Purchase1,100.0$7.23
Calderon Nancy E.Director2025-04-25Purchase1,000.0$7.45
Kemp Sarah E.Director2024-04-23Purchase1,275.0$15.7
Calderon Nancy E.Director2023-08-14Purchase500.0$13.17
NIGON RICHARDDirector2023-07-27Sale1,847.0$12.17
Kemp Sarah E.Director2023-04-18Purchase2,473.37$12.13
Calderon Nancy E.Director2023-01-30Purchase500.0$12.92
Kemp Sarah E.Director2022-01-12Purchase32.0$15.0
Kemp Sarah E.Director2022-01-12Purchase1,980.0$14.91
Calderon Nancy E.Director2021-01-25Purchase1,000.0$14.78
Calderon Nancy E.Director2020-07-23Purchase1,000.0$8.6
von Falkenhausen KonstantinDirector2015-07-24Purchase600.0$17.02
Colwell Barbara D.Director2015-04-28Purchase100.0$17.15
Colwell Barbara D.Director2015-04-28Purchase100.0$17.08
Colwell Barbara D.Director2015-04-28Purchase100.0$17.06
Colwell Barbara D.Director2015-04-28Purchase700.0$17.5
LYNCH G PATRICKPresident and CEO2014-04-16Sale12,000.0$21.25
CHENU PIERREDirector2013-11-26Sale1,500.0$16.75
NIGON RICHARDDirector2013-04-22Purchase2,000.0$10.99
CHENU PIERREDirector2013-02-25Sale1,000.0$13.29
CHENU PIERREDirector2013-01-29Sale1,000.0$13.1
STONE MARK JDirector2012-08-10Sale2,059.0$9.85
NIGON RICHARDDirector2012-04-20Purchase763.0$13.25
NIGON RICHARDDirector2012-04-20Purchase537.0$12.98
NIGON RICHARDDirector2012-04-20Purchase1,700.0$12.89
STONE MARK JDirector2012-02-28Sale6,700.0$15.2
STONE MARK JDirector2012-02-27Sale100.0$15.7
INTER ALIA HOLDING COPresident2011-09-13Sale616.0$14.8
Lynch Juliane IOfficer2011-09-13Sale616.0$14.8
LYNCH G PATRICKPresident2011-09-13Sale616.0$14.8
INTER ALIA HOLDING COPresident2011-09-12Sale1,184.0$15.2
Lynch Juliane IOfficer2011-09-12Sale1,184.0$15.2
LYNCH G PATRICKPresident2011-09-12Sale1,184.0$15.2
INTER ALIA HOLDING COPresident2011-09-07Sale1,992.0$15.81
Lynch Juliane IOfficer2011-09-07Sale1,992.0$15.81
LYNCH G PATRICKPresident2011-09-07Sale1,992.0$15.81
INTER ALIA HOLDING COPresident2011-09-06Sale108.0$16.0
Lynch Juliane IOfficer2011-09-06Sale108.0$16.0
LYNCH G PATRICKPresident2011-09-06Sale108.0$16.0
INTER ALIA HOLDING COPresident2011-09-02Sale1,000.0$16.0
Lynch Juliane IOfficer2011-09-02Sale1,000.0$16.0
LYNCH G PATRICKPresident2011-09-02Sale1,000.0$16.0
INTER ALIA HOLDING COPresident2011-09-01Sale100.0$16.45
Lynch Juliane IOfficer2011-09-01Sale100.0$16.45
LYNCH G PATRICKPresident2011-09-01Sale100.0$16.45
STONE MARK JDirector2011-08-31Sale2,000.0$16.2
LYNCH G PATRICKPresident2011-06-10Sale690.0$15.79
INTER ALIA HOLDING COPresident2011-06-10Sale690.0$15.79
Lynch Juliane IOfficer2011-06-10Sale690.0$15.79
LYNCH G PATRICKPresident and CEO2011-06-07Sale600.0$16.24
INTER ALIA HOLDING COPresident2011-06-07Sale600.0$16.24
Lynch Juliane IOfficer2011-06-07Sale600.0$16.24
LYNCH G PATRICKPresident and CEO2011-06-06Sale500.0$16.32
INTER ALIA HOLDING COPresident2011-06-06Sale500.0$16.32
Lynch Juliane IOfficer2011-06-06Sale500.0$16.32
LYNCH G PATRICKPresident and CEO2011-06-03Sale1,410.0$16.31
INTER ALIA HOLDING COPresident2011-06-03Sale1,410.0$16.31
Lynch Juliane IOfficer2011-06-03Sale1,410.0$16.31
LYNCH G PATRICKPresident and CEO2011-06-02Sale300.0$16.55
INTER ALIA HOLDING COPresident2011-06-02Sale300.0$16.55
Lynch Juliane IOfficer2011-06-02Sale300.0$16.55
LYNCH G PATRICKPresident and CEO2011-06-01Sale1,500.0$16.34
INTER ALIA HOLDING COPresident2011-06-01Sale1,500.0$16.34
Lynch Juliane IOfficer2011-06-01Sale1,500.0$16.34
INTER ALIA HOLDING COPresident2011-03-04Sale1,500.0$16.0
Lynch Juliane IOfficer2011-03-04Sale1,500.0$16.0
LYNCH G PATRICKPresident and CEO2011-03-04Sale1,500.0$16.0
INTER ALIA HOLDING COPresident2011-03-03Sale2,500.0$15.96
Lynch Juliane IOfficer2011-03-03Sale2,500.0$15.96
LYNCH G PATRICKPresident and CEO2011-03-03Sale2,500.0$15.96
INTER ALIA HOLDING COPresident2011-03-02Sale1,000.0$16.0
Lynch Juliane IOfficer2011-03-02Sale1,000.0$16.0
LYNCH G PATRICKPresident and CEO2011-03-02Sale1,000.0$16.0
LYNCH G PATRICKPresident and CEO2010-12-07Sale600.0$13.0
INTER ALIA HOLDING COPresident2010-12-07Sale600.0$13.0
Lynch Juliane IOfficer2010-12-07Sale600.0$13.0
LYNCH G PATRICKPresident and CEO2010-12-06Sale1,500.0$12.93
INTER ALIA HOLDING COPresident2010-12-06Sale1,500.0$12.93
Lynch Juliane IOfficer2010-12-06Sale1,500.0$12.93
INTER ALIA HOLDING COPresident2010-12-03Sale500.0$13.4
Lynch Juliane IOfficer2010-12-03Sale500.0$13.4
LYNCH G PATRICKPresident and CEO2010-12-03Sale500.0$13.4
INTER ALIA HOLDING COPresident2010-12-02Sale2,000.0$13.53
Lynch Juliane IOfficer2010-12-02Sale2,000.0$13.53
LYNCH G PATRICKPresident and CEO2010-12-02Sale2,000.0$13.53
INTER ALIA HOLDING COPresident2010-12-01Sale400.0$13.81
Lynch Juliane IOfficer2010-12-01Sale400.0$13.81
LYNCH G PATRICKPresident and CEO2010-12-01Sale400.0$13.81
STONE MARK JDirector2010-11-29Sale2,000.0$14.39
LYNCH G PATRICKPresident2010-09-22Sale900.0$9.5
INTER ALIA HOLDING COPresident2010-09-22Sale900.0$9.5
Lynch Juliane IOfficer2010-09-22Sale900.0$9.5
LYNCH G PATRICKPresident2010-09-21Sale100.0$9.67
LYNCH G PATRICKPresident2010-09-21Sale1,200.0$9.5
INTER ALIA HOLDING COPresident2010-09-21Sale100.0$9.67
Lynch Juliane IOfficer2010-09-21Sale100.0$9.67
INTER ALIA HOLDING COPresident2010-09-21Sale1,200.0$9.5