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Northern Technologies CFO exercises 11,879 options

Northern Technologies International Corp CFO and Corporate Secretary Matthew C. Wolsfeld exercised a fully vested stock option for 11,879 shares of common stock at $6.70 per share on July 1, 2026.

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Form Type
4

Rhea-AI Filing Summary

Northern Technologies International Corp CFO and Corporate Secretary Matthew C. Wolsfeld exercised a fully vested stock option for 11,879 shares of common stock at $6.70 per share on July 1, 2026. In a related transaction, 9,169 shares of common stock were disposed of at $8.68 per share to satisfy tax obligations. After these transactions, he directly holds 170,966 shares of Northern Technologies common stock. These trades were not reported as being made under a Rule 10b5-1 trading plan.

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Insider WOLSFELD MATTHEW C
Role CFO and Corporate Secretary
Type Security Shares Price Value
Exercise Stock Option (right to buy) 11,879 $0.00 $0.00
Exercise Common Stock 11,879 $6.70 $80K
Exercise Price or Tax Liability Common Stock 9,169 $8.68 $80K
Holdings After Transaction: Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 170,966 shares (Direct)
Footnotes (1)
  1. F1. This option has fully vested.
Options Exercised 11,879 shares Stock options exercised into common stock on July 1, 2026
Exercise Price $6.70 per share Exercise price for the 11,879-share stock option on July 1, 2026
Tax Withholding Shares 9,169 shares Common shares disposed of to satisfy tax obligations at $8.68 per share
Tax Withholding Price $8.68 per share Price applied to 9,169 shares delivered for tax withholding
Post-Transaction Holdings 170,966 shares Direct common stock holdings by Matthew C. Wolsfeld after the transactions
Stock Option (right to buy) financial
"Security title listed as Stock Option (right to buy) for the derivative transaction"
tax-withholding disposition financial
"Transaction action described as tax-withholding disposition for shares delivered for taxes"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
derivative security financial
"Transaction code description notes Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did NTIC CFO Matthew Wolsfeld report on July 1, 2026?

Matthew Wolsfeld reported exercising a fully vested option for 11,879 NTIC common shares at $6.70 per share. In a related move, 9,169 shares were disposed of at $8.68 per share to cover tax obligations, adjusting but not transforming his overall holdings.

How many Northern Technologies (NTIC) options did the CFO exercise, and at what price?

He exercised stock options covering 11,879 NTIC shares at an exercise price of $6.70 per share. The option was fully vested and, following exercise, the derivative option position reported for this grant was reduced to zero, converting entirely into common stock.

How many NTIC shares were withheld for taxes in Matthew Wolsfelds July 1, 2026 transaction?

A total of 9,169 NTIC common shares were disposed of at $8.68 per share as a tax-withholding transaction. These shares were delivered to satisfy tax obligations arising from the option exercise, rather than representing an open-market sale to third-party investors.

What is NTIC CFO Matthew Wolsfelds shareholding after the reported Form 4 transactions?

After the July 1, 2026 transactions, Matthew Wolsfeld directly holds 170,966 shares of Northern Technologies common stock. This figure reflects his position following the option exercise and related tax-withholding disposition, based on the canonical post-transaction holdings disclosure.

Were the NTIC insider transactions by CFO Matthew Wolsfeld made under a Rule 10b5-1 plan?

No. The filings Rule 10b5-1 checkbox was not marked as affirming a trading plan for these transactions. There is no accompanying footnote indicating a pre-arranged Rule 10b5-1 trading plan, so the trades are reported as discretionary rather than plan-based.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
WOLSFELD MATTHEW C

(Last)(First)(Middle)
C/O NORTHERN TECHNOLOGIES INT'L CORP.
4201 WOODLAND ROAD, PO BOX 69

(Street)
CIRCLE PINES MINNESOTA 55014

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
NORTHERN TECHNOLOGIES INTERNATIONAL CORP [ NTIC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
CFO and Corporate Secretary
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/01/2026M11,879A$6.7180,135D
Common Stock07/01/2026F9,169D$8.68170,966D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$6.707/01/2026M11,879 (1)08/31/2026Common Stock11,879$00D
Explanation of Responses:
1. This option has fully vested.
/s/ Matthew C. Wolsfeld07/02/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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