Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Wolsfeld Matthew C

Over the trailing 90 days, Wolsfeld Matthew C (Other Officer at NORTHERN TECHNOLOGIES INTERNATIONAL CORP) traded $159K of stock (net buying $2) in NTIC, per 3 SEC Form 4 transactions.

Role: Other Officer
Companies: NTIC
Window: Trailing 90 days · 3 transactions · CIK 1258563
Net activity: +$2 ($80K bought · $80K sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
NTIC	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	3	$80K	$80K	$2

Transactions (3)

Date	Symbol	Type	Shares	Value	Description
2026-07-01	NTIC	Sell	11.9K	$0	Exercise or conversion of derivative security
2026-07-01	NTIC	Buy	11.9K	$80K	Exercise or conversion of derivative security
2026-07-01	NTIC	Sell	9.2K	$80K	Payment of exercise price or tax liability by delivering securities

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

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