Northern Technologies International CEO sells 16,072 shares

Northern Technologies International Corp. President and CEO G. Patrick Lynch reported option-related trades in Common Stock.

Rhea-AI Filing Summary

Northern Technologies International Corp. President and CEO G. Patrick Lynch reported option-related trades in Common Stock. On July 29, he exercised a fully vested option for 16,072 shares at $6.70 per share, then sold 16,072 shares in open-market transactions on July 29–30 at prices between $7.95 and $8.10 per share. An indirect position of 1,203,334 shares is reported for Inter Alia Holding Company, for which he disclaims beneficial ownership except to the extent of his pecuniary interest.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 5 txns

Insider LYNCH G PATRICK

Role President and CEO

Sold 16,072 shs ($129K)

Approx. gross sale proceeds $129K

Approx. exercise cost $108K

Type	Security	Shares	Price	Value
Sale	Common Stock F1	16,070	$7.9967	$129K
Exercise	Stock Option (right to buy) F3	16,072	$0.00	$0.00
Exercise	Common Stock	16,072	$6.70	$108K
Sale	Common Stock	2	$8.10	$16.20
holding	Common Stock F2	--	--	--

Holdings After Transaction: Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 105,284 shares (Direct); Common Stock — 1,203,334 shares (Indirect, (2))

Footnotes (3)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.95 to $8.05, inclusive. The reporting person undertakes to provide to Northern Technologies International Corporation (NTIC), any security holder of NTIC, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.
2. F2. These shares are held directly by Inter Alia Holding Company of which G. Patrick Lynch is an officer and stockholder. Mr. G. Patrick Lynch disclaims beneficial ownership of the shares held by Inter Alia Holding Company, except to the extent of his pecuniary interest therein.
3. F3. This option has fully vested.

Key Figures

Common shares sold: 16,070 shares at $7.9967 per share Additional shares sold: 2 shares at $8.10 per share Stock options exercised: 16,072 options at $6.7000 per share +2 more

5 metrics

Common shares sold 16,070 shares at $7.9967 per share Open-market sale on 2026-07-30; weighted average price over $7.95–$8.05 range

Additional shares sold 2 shares at $8.10 per share Open-market sale of Common Stock on 2026-07-29

Stock options exercised 16,072 options at $6.7000 per share Exercise of Stock Option (right to buy) into Common Stock on 2026-07-29

Indirect common shares held 1,203,334 shares Common Stock held indirectly by Inter Alia Holding Company as of 2026-07-29; beneficial ownership disclaimed except pecuniary interest

Option expiration date 2026-08-31 Expiration date of the exercised stock option reported in the derivative transaction

Key Terms

weighted average price, beneficial ownership, pecuniary interest, Stock Option (right to buy)

4 terms

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

beneficial ownership financial

"Mr. G. Patrick Lynch disclaims beneficial ownership of the shares held by Inter Alia"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of his pecuniary interest therein."

Stock Option (right to buy) financial

"Security title reported as Stock Option (right to buy) with exercise price $6.7000."

FAQ

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

What insider transactions did NTIC CEO G. Patrick Lynch report on July 29–30, 2026?

G. Patrick Lynch exercised a stock option for 16,072 NTIC shares on July 29, 2026, then sold 16,072 common shares in open-market trades on July 29–30 at prices between $7.95 and $8.10 per share. The option had a $6.70 exercise price and was fully vested.

At what prices did NTIC insider G. Patrick Lynch sell his common stock?

He sold 16,070 shares at a weighted average price of $7.9967 per share in multiple trades between $7.95 and $8.05, plus an additional 2 shares at $8.10 on July 29, 2026. All reported transactions involved NTIC Common Stock.

What stock option did NTIC’s G. Patrick Lynch exercise in the latest Form 4?

Lynch exercised a fully vested Stock Option (right to buy) covering 16,072 shares of NTIC Common Stock at an exercise price of $6.7000 per share. The option shows 0 shares remaining after exercise and carried an expiration date of 2026-08-31.

How many NTIC shares are indirectly associated with Inter Alia Holding Company?

The report lists 1,203,334 shares of NTIC Common Stock held indirectly by Inter Alia Holding Company. G. Patrick Lynch is an officer and stockholder of Inter Alia and disclaims beneficial ownership of these shares except to the extent of his pecuniary interest.

What is the net share effect of G. Patrick Lynch’s reported NTIC trades?

Across the reported transactions, Lynch exercised options for 16,072 shares and sold 16,072 shares of NTIC Common Stock, resulting in a net reported share effect of zero from these specific trades, while a separate 1,203,334-share indirect position remains reported via Inter Alia Holding Company.

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

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Available on EDGAR 07/31/2026 - 04:34 PM Accepted by SEC EDGAR 07/31/2026 - 04:34 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

LYNCH G PATRICK

(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)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/29/2026		M		16,072	A	$6.7	121,356	D
Common Stock	07/29/2026		S		2	D	$8.1	121,354	D
Common Stock	07/30/2026		S		16,070	D	$7.9967(1)	105,284	D
Common Stock								1,203,334	I	(2)(2)

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$6.7	07/29/2026		M			16,072	(3)	08/31/2026	Common Stock	16,072	$0	0	D

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.95 to $8.05, inclusive. The reporting person undertakes to provide to Northern Technologies International Corporation (NTIC), any security holder of NTIC, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

2. These shares are held directly by Inter Alia Holding Company of which G. Patrick Lynch is an officer and stockholder. Mr. G. Patrick Lynch disclaims beneficial ownership of the shares held by Inter Alia Holding Company, except to the extent of his pecuniary interest therein.

3. This option has fully vested.

	/s/ Matthew C. Wolsfeld-Attorney-in-fact	07/31/2026
	** Signature of Reporting Person	Date
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)