MATTHEW C WOLSFELD

CIK 1258563 · CFO and Corporate Secretary · last filed 2025-09-03

"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.

Disclosed Exposure

$1.35M

Companies

2

Total Filings

27

Lifetime Open-Market Net

$0

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	CFO and Corporate Secretary	168,256	$8.05	$1.35M	$0	25	2025-09-03
NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTI) Delisted	CFO and Corporate Secretary	25,216	—	—	$0	2	2007-11-20

Recent Filings · Page 3 of 3

27 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2011-11-08	NTIC	Grant (A)	+6,053	$0	EDGAR
2010-11-22	NTIC	Grant (A)	+3,193	$0	EDGAR
2010-11-03	NTIC	Exer (M)	+8,000	$43.0K	EDGAR
2009-11-23	NTIC	Grant (A)	—	$0	EDGAR
2008-11-04	NTIC	Grant (A)	+4,144	$0	EDGAR
2007-11-20	NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTI) Delisted	Grant (A)	+4,742	$0	EDGAR
2007-02-09	NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTI) Delisted	Exer (M)	+10,000	$45.6K	EDGAR

Showing 21–27 of 27

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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.