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    SEC Form SCHEDULE 13G filed by 908 Devices Inc.

    4/7/25 4:18:42 PM ET
    $MASS
    Industrial Machinery/Components
    Industrials
    Get the next $MASS alert in real time by email



    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


    UNDER THE SECURITIES EXCHANGE ACT OF 1934
    908 Devices Inc.

    (Name of Issuer)


    Common Stock

    (Title of Class of Securities)


    65443P102

    (CUSIP Number)


    03/31/2025

    (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 checked   Rule 13d-1(b)
    Checkbox not checked   Rule 13d-1(c)
    Checkbox not checked   Rule 13d-1(d)






    SCHEDULE 13G

    CUSIP No.
    65443P102


    1Names of Reporting Persons

    AWM Investment Company, Inc.
    2Check the appropriate box if a member of a Group (see instructions)

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

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

    5,199,924.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    5,199,924.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    5,199,924.00
    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)

    14.7 %
    12Type of Reporting Person (See Instructions)

    IA

    Comment for Type of Reporting Person:  AWM Investment Company, Inc., a Delaware corporation (AWM), is the investment adviser to Special Situations Cayman Fund, L.P. (CAYMAN), Special Situations Fund III QP, L.P. (SSFQP), Special Situations Private Equity Fund, L.P. (SSPE), Special Situations Technology Fund, L.P. (TECH) and Special Situations Technology Fund II, L.P. (TECH II) (CAYMAN, SSFQP, SSPE, TECH and TECH II will hereafter be referred to as the Funds). As the investment adviser to the Funds, AWM holds sole voting and investment power over 649,110 shares of Common Stock of the Issuer (the Shares) held by CAYMAN, 2,235,354 Shares held by SSFQP, 300,000 Shares held by SSPE, 338,137 Shares held by TECH and 1,677,323 Shares held by TECH II


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    908 Devices Inc.
    (b)Address of issuer's principal executive offices:

    645 SUMMER STREET, BOSTON, MASSACHUSETTS, 02210
    Item 2. 
    (a)Name of person filing:

    The person filing this report is AWM Investment Company, Inc., a Delaware corporation (AWM), which is the investment adviser to Special Situations Cayman Fund, L.P., a Cayman Island limited partnership (CAYMAN), Special Situations Fund III QP, L.P., a Delaware limited partnership (SSFQP) Special Situations Private Equity Fund, L.P., a Delaware limited partnership (SSPE), Special Situations Technology Fund, L.P., a Delaware limited partnership (TECH) and Special Situations Technology Fund II, L.P., a Delaware limited partnership. The principal business of each Fund is to invest in equity and equity-related securities and other securities of any kind or nature. David M. Greenhouse (Greenhouse) and Adam C. Stettner (Stettner) are members of SSCayman, L.L.C., a Delaware limited liability company (SSCAY), the general partner of CAYMAN. Greenhouse and Stettner are members of: MGP Advisers Limited Partnership, a Delaware limited partnership (MGP), the general partner of SSFQP; MG Advisers, L.L.C., a New York limited liability company (MG), the general partner of SSPE; and SST Advisers, L.L.C., a Delaware limited liability company (SSTA), the general partner of TECH and TECH II. Greenhouse and Stettner are also controlling principals of AWM
    (b)Address or principal business office or, if none, residence:

    527 Madison Avenue, Suite 2600 New York, NY 10022
    (c)Citizenship:

    AWM is a Delaware Corporation
    (d)Title of class of securities:

    Common Stock
    (e)CUSIP No.:

    65443P102
    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:

    5,199,924
    (b)Percent of class:

    14.7  %
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    AWM is the investment adviser to each of the Funds. As the investment adviser to the Funds, AWM holds sole voting power over 649,110 shares of Common Stock of the Issuer (the Shares) held by CAYMAN, 2,235,354 Shares held by SSFQP, 300,000 Shares held by SSPE, 338,137 Shares held by TECH and 1,677,323 Shares held by TECH II. Greenhouse and Stettner are members of SSCAY, the general partner of CAYMAN. Greenhouse and Stettner are members of: MGP, the general partner of SSFQP; MG, the general partner of SSPE and SSTA, the general partner of TECH and TECH II. Greenhouse and Stettner are also controlling principals of AWM.

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

    0

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

    AWM is the investment adviser to each of the Funds. As the investment adviser to the Funds, AWM holds sole investment power over 649,110 shares of Common Stock of the Issuer (the Shares) held by CAYMAN, 2,235,354 Shares held by SSFQP, 300,000 Shares held by SSPE, 338,137 Shares held by TECH and 1,677,323 Shares held by TECH II. Greenhouse and Stettner are members of SSCAY, the general partner of CAYMAN. Greenhouse and Stettner are members of: MGP, the general partner of SSFQP; MG, the general partner of SSPE and SSTA, the general partner of TECH and TECH II. Greenhouse and Stettner are also controlling principals of AWM.

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

    0

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Item 6.Ownership of more than 5 Percent on Behalf of Another Person.
     
    Not Applicable
    Item 7.Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
     
    Not Applicable
    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 acquired and are held in the ordinary course of business and 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.

     
    AWM Investment Company, Inc.
     
    Signature:Adam Stettner
    Name/Title:Executive Vice President
    Date:04/07/2025
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