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    Amendment: SEC Form SCHEDULE 13G/A filed by Singular Genomics Systems Inc.

    1/16/25 2:52:36 PM ET
    $OMIC
    Biotechnology: Laboratory Analytical Instruments
    Industrials
    Get the next $OMIC 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. 2)


    Singular Genomics Systems, Inc.

    (Name of Issuer)


    Common Stock, $0.0001 par value

    (Title of Class of Securities)


    82933R100

    (CUSIP Number)


    12/31/2024

    (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.
    82933R100


    1Names of Reporting Persons

    Domain Partners IX, L.P.
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox 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

    0.00
    6Shared Voting Power

    125,466.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    125,466.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    125,446.00
    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)

    4.95 %
    12Type of Reporting Person (See Instructions)

    PN


    SCHEDULE 13G

    CUSIP No.
    82933R100


    1Names of Reporting Persons

    Domain Associates, LLC
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox 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

    0.00
    6Shared Voting Power

    500.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    500.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    500.00
    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)

    OO


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    Singular Genomics Systems, Inc.
    (b)Address of issuer's principal executive offices:

    3010 Science Park Road, San Diego, CA 92121
    Item 2. 
    (a)Name of person filing:

    This Amendment No. 2 to Schedule 13G is filed by Domain Partners IX, L.P., a Delaware limited partnership ("Domain IX"), and Domain Associates, LLC, a Delaware limited liability company ("DA" and together with Domain IX, the "Reporting Persons"). Reference is hereby made to the Schedule 13G filed with the Securities and Exchange Commission by the Reporting Persons with respect to the Common Stock of the Issuer on January 4, 2022 and Amendment No. 1 thereto filed on January 25, 2024. The items included in this Amendment No. 2 are hereby amended and restated.
    (b)Address or principal business office or, if none, residence:

    (c)Citizenship:

    (d)Title of class of securities:

    Common Stock, $0.0001 par value
    (e)CUSIP No.:

    82933R100
    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:

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference.
    (b)Percent of class:

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference. Percentage ownership is based on 2,533,744 shares of Common Stock outstanding as of December 20, 2024, as reported in the Issuer's Report on Form 8-K filed with the Securities and Exchange Commission on December 23, 2024.
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference.

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

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference.

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

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference.

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

    The information required by this item is set forth in the cover pages to this Schedule 13G/A and is incorporated herein by reference.

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Checkbox checked    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.

     
    Domain Partners IX, L.P.
     
    Signature:/s/ Lisa A. Kraeutler
    Name/Title:Lisa A. Kraeutler, Attorney-in-Fact
    Date:01/16/2025
     
    Domain Associates, LLC
     
    Signature:/s/ Lisa A. Kraeutler
    Name/Title:Lisa A. Kraeutler, Attorney-in-Fact
    Date:01/16/2025
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