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    Amendment: SEC Form SCHEDULE 13G/A filed by NCS Multistage Holdings Inc.

    5/15/25 4:46:25 PM ET
    $NCSM
    Oilfield Services/Equipment
    Energy
    Get the next $NCSM 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)


    NCS Multistage Holdings, Inc.

    (Name of Issuer)


    Common Stock, par value $0.01 per share

    (Title of Class of Securities)


    628877102

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






    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    ADVENT INTERNATIONAL, L.P.
    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

    1,478,426.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    1,478,426.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,478,426.00
    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)

    58.19 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of common stock ("Common Stock") outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the Securities and Exchange Commission ("SEC") on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII 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

    1,478,426.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    1,478,426.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,478,426.00
    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)

    58.19 %
    12Type of Reporting Person (See Instructions)

    OO

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent-NCS Acquisition Limited Partnership
    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

    1,478,426.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    1,478,426.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,478,426.00
    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)

    58.19 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent-NCS GP 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

    1,478,426.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    1,478,426.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,478,426.00
    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)

    58.19 %
    12Type of Reporting Person (See Instructions)

    OO

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    GPE VII GP Limited Partnership
    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

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

    504,439.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    504,439.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    504,439.00
    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)

    19.85 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    GPE VII GP (Delaware) Limited Partnership
    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

    941,019.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    941,019.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    941,019.00
    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)

    37.04 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent Partners GPE VII Limited Partnership
    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

    591.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    591.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    591.00
    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)

    0.02 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent Partners GPE VII-A Limited Partnership
    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

    1,478.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    1,478.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,478.00
    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)

    0.06 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent Partners GPE VII-B Cayman Limited Partnership
    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

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

    14,489.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    14,489.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    14,489.00
    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)

    0.57 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent Partners GPE VII Cayman Limited Partnership
    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

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

    13,010.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    13,010.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    13,010.00
    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)

    0.51 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent Partners GPE VII-A Cayman Limited Partnership
    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

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

    3,400.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    3,400.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    3,400.00
    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)

    0.13 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII Limited Partnership
    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

    184,655.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    184,655.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    184,655.00
    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)

    7.27 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-A Limited Partnership
    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

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

    170,906.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    170,906.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    170,906.00
    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)

    6.73 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-B Limited Partnership
    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

    429,483.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    429,483.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    429,483.00
    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)

    16.9 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-C Limited Partnership
    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

    136,459.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    136,459.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    136,459.00
    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)

    5.37 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-D Limited Partnership
    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

    110,586.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    110,586.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    110,586.00
    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)

    4.35 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-E Limited Partnership
    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

    309,435.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    309,435.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    309,435.00
    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)

    12.18 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-F Limited Partnership
    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

    39,918.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    39,918.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    39,918.00
    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)

    1.57 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-G Limited Partnership
    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

    39,918.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    39,918.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    39,918.00
    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)

    1.57 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    CUSIP No.
    628877102


    1Names of Reporting Persons

    Advent International GPE VII-H Limited Partnership
    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

    24,098.00
    6Shared Voting Power

    0.00
    7Sole Dispositive Power

    24,098.00
    8Shared Dispositive Power

    0.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    24,098.00
    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)

    0.95 %
    12Type of Reporting Person (See Instructions)

    PN

    Comment for Type of Reporting Person:  The reported percentage is calculated based on 2,540,849 shares of Common Stock outstanding as of April 29, 2025, as reported on the Issuer's 10-Q filed with the SEC on May 1, 2025.


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    NCS Multistage Holdings, Inc.
    (b)Address of issuer's principal executive offices:

    19450 State Highway, 249, Suite 200, Houston, Texas, 77070
    Item 2. 
    (a)Name of person filing:

    This statement is being jointly filed by each of the persons below pursuant to Rule 13d-1(k) promulgated by the SEC pursuant to Section 13 of the Act, all of whom together are referred to herein as the "Reporting Persons": (i) Advent International, L.P., a Delaware limited partnership (f/k/a Advent International Corporation); (ii) Advent International GPE VII LLC, a Delaware LLC; (iii) Advent-NCS Acquisition Limited Partnership, a Delaware limited partnership; (iv) Advent-NCS GP LLC, a Delaware LLC; (v) GPE VII GP Limited Partnership, a Cayman Islands limited partnership (vi) GPE VII GP (Delaware) Limited Partnership, a Delaware limited partnership; (vii) Advent Partners GPE VII Limited Partnership, a Delaware limited partnership; (viii) Advent Partners GPE VII-A Limited Partnership, a Delaware limited partnership; (ix) Advent Partners GPE VII-B Cayman Limited Partnership, a Cayman Islands limited partnership; (x) Advent Partners GPE VII Cayman Limited Partnership, a Cayman Islands limited partnership; (xi) Advent Partners GPE VII-A Cayman Limited Partnership, a Cayman Islands limited partnership; (xii) Advent International GPE VII Limited Partnership, a Delaware limited partnership; (xiii) Advent International GPE VII-A Limited Partnership, a Cayman Islands limited partnership; (xiv) Advent International GPE VII-B Limited Partnership, a Delaware limited partnership; (xv) Advent International GPE VII-C Limited Partnership, a Delaware limited partnership; (xvi) Advent International GPE VII-D Limited Partnership, a Delaware limited partnership; (xvii) Advent International GPE VII-E Limited Partnership, a Cayman Islands limited partnership; (xviii) Advent International GPE VII-F Limited Partnership, a Delaware limited partnership; (xix) Advent International GPE VII-G Limited Partnership, a Delaware limited partnership; and (xx) Advent International GPE VII-H Limited Partnership, a Cayman Islands limited partnership. Advent International, L.P. is the manager of Advent International GPE VII LLC, which in turn is the general partner of GPE VII GP Limited Partnership, GPE VII GP (Delaware) Limited Partnership, Advent Partners GPE VII Limited Partnership, Advent Partners GPE VII-A Limited Partnership, Advent Partners GPE VII-B Limited Partnership, Advent Partners GPE VII Cayman Limited Partnership, and Advent Partners GPE VII-A Cayman Limited Partnership. GPE VII GP Limited Partnership is the general partner of Advent International GPE VII-A Limited Partnership, Advent International GPE VII-E Limited Partnership, and Advent International GPE VII-H Limited Partnership. GPE VII GP (Delaware) Limited Partnership is the general partner of Advent International GPE VII Limited Partnership, Advent International GPE VII-B Limited Partnership, Advent International GPE VII-C Limited Partnership, Advent International GPE VII-D Limited Partnership, Advent International GPE VII-F Limited Partnership, and Advent International GPE VII-G Limited Partnership. Advent-NCS GP LLC is a general partner of Advent-NCS Acquisition Limited Partnership. Advent Partners GPE VII Limited Partnership, Advent Partners GPE VII-A Limited Partnership, Advent Partners GPE VII-B Cayman Limited Partnership, Advent Partners GPE VII Cayman Limited Partnership, Advent Partners GPE VII-A Cayman Limited Partnership, Advent International GPE VII Limited Partnership, Advent International GPE VII-A Limited Partnership, Advent International GPE VII-B Limited Partnership, Advent International GPE VII-C Limited Partnership, Advent International GPE VII-D Limited Partnership, Advent International GPE VII-F Limited Partnership, Advent International GPE VII-G Limited Partnership, and Advent International GPE VII-H Limited Partnership, are members of Advent-NCS GP LLC.
    (b)Address or principal business office or, if none, residence:

    Prudential Tower, 800 Boylston Street, Boston, Massachusetts 02199
    (c)Citizenship:

    See responses to row 4 on each cover page.
    (d)Title of class of securities:

    Common Stock, par value $0.01 per share
    (e)CUSIP No.:

    628877102
    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:

    See responses to row 9 on each cover page hereto which, together with the information set forth in Item 2 of this Statement, are incorporated by reference into this Item 4.
    (b)Percent of class:

    See responses to row 11 on each cover page.
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    See responses to row 5 on each cover page.

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

    See responses to row 6 on each cover page.

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

    See responses to row 7 on each cover page.

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

    See responses to row 8 on each cover page.

    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:
     
    Not Applicable

        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.

     
    ADVENT INTERNATIONAL, L.P.
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory
    Date:05/15/2025
     
    Advent International GPE VII LLC
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent-NCS Acquisition Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent-NCS GP LLC
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory
    Date:05/15/2025
     
    GPE VII GP Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    GPE VII GP (Delaware) Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent Partners GPE VII Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent Partners GPE VII-A Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent Partners GPE VII-B Cayman Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent Partners GPE VII Cayman Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent Partners GPE VII-A Cayman Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-A Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-B Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-C Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-D Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-E Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-F Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-G Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
     
    Advent International GPE VII-H Limited Partnership
     
    Signature:/s/ Neil Crawford
    Name/Title:Neil Crawford / Authorized Signatory, See Exhibit 99.2
    Date:05/15/2025
    Exhibit Information

    99.1 Joint Filing Agreement, dated May 15, 2025 99.2 Signature Page, dated May 15, 2025

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