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    Amendment: SEC Form SCHEDULE 13G/A filed by Northern Technologies International Corporation

    11/13/25 5:42:33 PM ET
    $NTIC
    Industrial Specialties
    Industrials
    Get the next $NTIC alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


    UNDER THE SECURITIES EXCHANGE ACT OF 1934
    (Amendment No. 1)


    Northern Technologies International Corp.

    (Name of Issuer)


    Common Stock, par value $0.02 per share

    (Title of Class of Securities)


    665809109

    (CUSIP Number)


    09/30/2025

    (Date of Event Which Requires Filing of this Statement)


    Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
    Checkbox not checked   Rule 13d-1(b)
    Checkbox checked   Rule 13d-1(c)
    Checkbox not checked   Rule 13d-1(d)






    SCHEDULE 13G

    CUSIP No.
    665809109


    1Names of Reporting Persons

    NEEDHAM INVESTMENT MANAGEMENT L.L.C.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    640,000.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    640,000.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    640,000.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    6.8 %
    12Type of Reporting Person (See Instructions)

    IA, OO


    SCHEDULE 13G

    CUSIP No.
    665809109


    1Names of Reporting Persons

    NEEDHAM ASSET MANAGEMENT, LLC
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    640,000.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    640,000.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    640,000.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    6.8 %
    12Type of Reporting Person (See Instructions)

    HC, OO


    SCHEDULE 13G

    CUSIP No.
    665809109


    1Names of Reporting Persons

    NEEDHAM AGGRESSIVE GROWTH FUND
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    MARYLAND
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    640,000.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    640,000.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    640,000.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    6.8 %
    12Type of Reporting Person (See Instructions)

    IV, OO


    SCHEDULE 13G

    CUSIP No.
    665809109


    1Names of Reporting Persons

    GEORGE A. NEEDHAM
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    640,000.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    640,000.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    640,000.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    6.8 %
    12Type of Reporting Person (See Instructions)

    HC, IN


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    Northern Technologies International Corp.
    (b)Address of issuer's principal executive offices:

    4201 Woodland Road, P.O. Box 69, Circle Pines, Minnesota 55014, United States of America
    Item 2. 
    (a)Name of person filing:

    Needham Investment Management L.L.C. Needham Asset Management, LLC Needham Aggressive Growth Fund George A. Needham
    (b)Address or principal business office or, if none, residence:

    Needham Investment Management L.L.C. 250 Park Avenue, 10th Floor New York, New York 10117-1099 United States of America Needham Asset Management, LLC c/o Needham Investment Management L.L.C. 250 Park Avenue, 10th Floor New York, New York 10117-1099 United States of America Needham Aggressive Growth Fund c/o Needham Investment Management L.L.C. 250 Park Avenue, 10th Floor New York, New York 10117-1099 United States of America George A Needham c/o Needham Investment Management L.L.C. 250 Park Avenue, 10th Floor New York, New York 10117-1099 United States of America
    (c)Citizenship:

    Needham Investment Management L.L.C. - Delaware Needham Asset Management, LLC - Delaware Needham Aggressive Growth Fund - Other - Maryland George A Needham - United States
    (d)Title of class of securities:

    Common Stock, par value $0.02 per share
    (e)CUSIP No.:

    665809109
    Item 3.If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
    (a)Checkbox not checked   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
    (b)Checkbox not checked   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
    (c)Checkbox not checked   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
    (d)Checkbox not checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
    (e)Checkbox not checked   An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
    (f)Checkbox not checked   An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
    (g)Checkbox not checked   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
    (h)Checkbox not checked   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
    (i)Checkbox not checked   A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
    (j)Checkbox not checked   A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
           please specify the type of institution:
    (k)Checkbox not checked   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
     
    Item 4.Ownership
    (a)Amount beneficially owned:

    Needham Investment Management L.L.C. - 640,000 Needham Asset Management, LLC - 640,000 Needham Aggressive Growth Fund - 640,000 George A Needham - 640,000
    (b)Percent of class:

    Needham Investment Management L.L.C. - 6.8% Needham Asset Management, LLC - 6.8% Needham Aggressive Growth Fund - 6.8% George A Needham - 6.8%
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    Needham Investment Management L.L.C. - 0 Needham Asset Management, LLC - 0 Needham Aggressive Growth Fund - 0 George A Needham - 0

     (ii) Shared power to vote or to direct the vote:

    Needham Investment Management L.L.C. - 640,000 Needham Asset Management, LLC - 640,000 Needham Aggressive Growth Fund - 640,000 George A Needham - 640,000

     (iii) Sole power to dispose or to direct the disposition of:

    Needham Investment Management L.L.C. - 0 Needham Asset Management, LLC - 0 Needham Aggressive Growth Fund - 0 George A Needham - 0

     (iv) Shared power to dispose or to direct the disposition of:

    Needham Investment Management L.L.C. - 640,000 Needham Asset Management, LLC - 640,000 Needham Aggressive Growth Fund - 640,000 George A Needham - 640,000

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Item 6.Ownership of more than 5 Percent on Behalf of Another Person.
     
    If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.


    All of the securities reported in this Schedule 13G Amendment No.1 are directly owned by advisory clients of Needham Investment Management L.L.C.. None of those advisory clients, other than Needham Aggressive Growth Fund, may be deemed to beneficially own more than 5% Common Stock, par value $0.02 per share.
    Item 7.Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
     
    If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.


    Please see Exhibit B attached hereto.
    Item 8.Identification and Classification of Members of the Group.
     
    Not Applicable
    Item 9.Notice of Dissolution of Group.
     
    Not Applicable

    Item 10.Certifications:
     
    By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

        SIGNATURE 
     
    After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

     
    NEEDHAM INVESTMENT MANAGEMENT L.L.C.
     
    Signature:By: /s/ James W. Giangrasso
    Name/Title:James W. Giangrasso, Chief Financial Officer
    Date:11/13/2025
     
    NEEDHAM ASSET MANAGEMENT, LLC
     
    Signature:By: /s/ James W. Giangrasso
    Name/Title:James W. Giangrasso, Authorized Person
    Date:11/13/2025
     
    NEEDHAM AGGRESSIVE GROWTH FUND
     
    Signature:By: /s/ James W. Giangrasso
    Name/Title:James W. Giangrasso, Chief Financial Officer
    Date:11/13/2025
     
    GEORGE A. NEEDHAM
     
    Signature:By: /s/ George A. Needham
    Name/Title:George A. Needham
    Date:11/13/2025

    Comments accompanying signature:  * Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his, her or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. To the extent that "ownership of 5 percent or less of a class" was indicated in Item 5, such response only applies to the Reporting Person(s) that indicated elsewhere herein that it beneficially owns five percent (5%) or less of the class.
    Exhibit Information

    Exhibit A - Joint Filing Agreement Exhibit B - Control Person Identification

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