Washington, D.C. 20549


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 Number: 3235-0104
Estimated average burden
hours per response: 0.5
1. Name and Address of Reporting Person*
Pinho Cristina Lucia Duarte

(Last) (First) (Middle)


(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
3. Issuer Name and Ticker or Trading Symbol
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
No securities are beneficially owned.
/s/ Matthew C. Wolsfeld, attorney-in fact 01/23/2023
** 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 5 (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.
Cristina Lucia Duarte Pinho

With respect to holdings of and transactions in securities
issued by Northern Technologies International Corporation
(the Company), the undersigned hereby constitutes and
appoints the individuals listed on Schedule A attached
hereto and as may be amended from time to time, or any
of them signing singly, with full power of substitution and
resubstitution, to act as the undersigned's true and
lawful attorney-in-fact to:

1.	prepare, execute, and submit to the United
States Securities and Exchange Commission (SEC) a Form
ID, Uniform Application For Access Codes To File On Edgar,
including amendments thereto, and any other documents
necessary or appropriate to obtain codes and passwords
enabling the undersigned to make electronic filings
with the SEC of reports required or considered by the
attorney-in-fact to be advisable under Section 13 or
Section 16 of the United States Securities Exchange Act
of 1934, as amended, or any rule or regulation of the SEC;

2.	prepare, execute for and on behalf of the
undersigned, Forms 3, 4, and 5 in accordance with Section
16 of the United States Securities Exchange Act of 1934,
as amended, and any Form 144 in accordance with Rule 144
under the United States Securities Act of 1933, as amended,
 and the rules and regulations thereunder;

3.	do and perform any and all acts for and on behalf
of the undersigned which may be necessary or desirable
to complete and execute any such Form ID, Form 3, 4,
or 5 or Form 144 or complete and execute any amendment
or amendments thereto, and timely file such forms with
the SEC and any stock exchange or similar authority; and

4.	take any other action of any type whatsoever
in connection with the foregoing which, in the opinion
of such attorney-in-fact, may be of benefit to, in the
best interest of, or legally required by, the
undersigned, it being understood that the documents
executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall
be in such form and shall contain such terms and conditions
as such attorney-in-fact may approve in the discretion of
such attorney-in-fact.

The undersigned hereby grants to each such attorney-in-
fact full power and authority to do and perform any and
every act and thing whatsoever requisite, necessary, or
proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if
personally present, with full power of substitution and
resubstitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this
Power of Attorney and the rights and powers herein

The undersigned hereby acknowledges that the attorneys-
in-fact, in serving in such capacity at the request of
the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act
of 1934, as amended, or Rule 144 of the Securities Act
of 1933, as amended, and any similar law, rule or

This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to
file Forms 3, 4, and 5 and Forms 144 with respect to
the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier
revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this  20th day
of December

/s/ Cristina Lucia Duarte Pinho
Cristina Lucia Duarte Pinho

Shedule A

Individuals Appointed as Attorney-in-Fact with Full Power
of Substitution and Resubstitution

1.  G. Patrick Lynch, President and Chief Executive Officer

2.  Matthew C. Wolsfeld, Chief Financial Officer and

3.  Amy E. Culbert, Partner, Fox Rothschild, LLP

4.  Emily Humbert, Associate, Fox Rothschild LLP