Northern Technologies International CORP Form 4 insider transactions

G Patrick Lynch, President and CEO, a Director and 10% owner of Northern Technologies International Corp, sold 16,072 shares of common stock on July 29, 2026.

Richard Nigon, a Director of Northern Technologies International Corp, sold 12,000 shares of common stock on July 20, 2026 for $8.00 per share.

Matthew C. Wolsfeld, CFO and Corporate Secretary of Northern Technologies International Corp. (NTIC), reported a transaction involving the sale of common stock and the acquisition of stock options.

Northern Technologies International Corp's CFO, Matthew C. Wolsfeld, reported the acquisition of 32,559 stock options and increased common stock holdings.

Northern Technologies International Corp's President and CEO, G. Patrick Lynch, was granted 44,051 stock options with a $7.42 exercise price.

Northern Technologies International Corp. Director Konstantin von Falkenhausen acquired 16,287 stock options with an exercise price of $7.42.

Northern Technologies International Corp director Sunggyu Lee acquired 16,287 stock options with an exercise price of $7.42, exercisable from September 1, 2026.

NTIC Director Ramani Narayan was granted 16,287 stock options with an exercise price of $7.42, effective September 1, 2025, as part of a pre-arranged plan.

Northern Technologies International Corp. Director Richard Nigon received a grant of 8,086 restricted stock units, vesting in September 2026.

Northern Technologies International Corp. Director Sarah E. Kemp was granted 6,739 restricted stock units, vesting on September 1, 2026.

Northern Technologies International Corp director Cristina Lucia Duarte Pinho was granted 6,739 restricted stock units, vesting in September 2026.

Northern Technologies International Corp director Nancy E. Calderon was granted 6,739 restricted stock units, vesting in September 2026, increasing her beneficial ownership.

Northern Technologies International Corp. Director Richard Nigon exercised stock options to acquire 12,000 shares and subsequently sold 10,873 shares, primarily for tax purposes, on July 24, 2025.

Konstantin von Falkenhausen, a director at Northern Technologies International Corp, purchased 1,100 shares of common stock at $7.23 per share on May 6, 2025.

Director Nancy E. Calderon purchased 1,000 shares of Northern Technologies International Corp (NTIC) at $7.452 per share on April 25, 2025.

Konstantin von Falkenhausen, a director of Northern Technologies International Corp, reports acquiring stock options exercisable for 9,843 shares of common stock.

Matthew Wolsfeld, CFO of Northern Technologies International Corp, reports acquisition of stock options and updates to beneficial ownership of common stock.

Director Cristina Lucia Duarte Pinho reports acquisition of 3,771 common stock shares and disposal of 3,771 shares on September 1, 2024.

Director Sunggyu Lee acquires stock options in Northern Technologies International Corp.

Director Ramani Narayan reports acquisition of stock options in Northern Technologies International Corp.

Director Nancy E. Calderon reports acquisition of additional shares in Northern Technologies International Corp through restricted stock units.

G. Patrick Lynch, President & CEO of Northern Technologies International Corp, reports acquisition of stock options and indirect ownership of common stock.

Richard Nigon, a director at Northern Technologies International Corp, acquired 11,811 stock options on September 1, 2024.

Director Sarah E. Kemp acquired 3,771 shares of Northern Technologies International Corp (NTIC) common stock on September 1, 2024, through a restricted stock unit award.

G. Patrick Lynch, President and CEO of Northern Technologies International Corp, exercised stock options and disposed of shares on August 26, 2024.

Richard Nigon, a director at Northern Technologies International Corp, exercised stock options and sold shares on August 1, 2024.

Konstantin von Falkenhausen, a director at Northern Technologies International Corp, exercised stock options and disposed of shares on July 31, 2024.

CFO Matthew Wolsfeld exercised stock options to acquire 7,752 shares of Northern Technologies International Corp (NTIC) common stock at $10.05 per share.

Director Sarah E. Kemp purchased 1,275 shares of Northern Technologies International Corp (NTIC) at $15.7 per share on April 23, 2024.